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output/
win32port/ipch/
win32port/Debug*/
win32port/Release*/
win32port/server/Debug*/
win32port/server/Release*/
win32port/client/Debug*/
win32port/client/Release*/
win32port/libwebsocketswin32/Debug*/
win32port/libwebsocketswin32/Release*/
win32port/zlib/Debug*/
win32port/zlib/Release*/
*.vcxproj.user
*.opensdf
*.sdf
*.suo

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Installation Instructions
*************************
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pass the option `--exec-prefix=PREFIX' to `configure', the package uses
PREFIX as the prefix for installing programs and libraries.
Documentation and other data files still use the regular prefix.
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having to reconfigure or recompile.
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directory configuration variables that were expressed in terms of
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but not in terms of `${prefix}', must each be overridden at install
time for the entire installation to be relocated. The approach of
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Optional Features
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If the package supports it, you can cause programs to be installed
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Particular systems
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On HP-UX, the default C compiler is not ANSI C compatible. If GNU
CC is not installed, it is recommended to use the following options in
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./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
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On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
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./configure CC="cc"
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On Solaris, don't put `/usr/ucb' early in your `PATH'. This
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On Haiku, software installed for all users goes in `/boot/common',
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Specifying the System Type
==========================
There may be some features `configure' cannot figure out
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KERNEL-OS
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Sharing Defaults
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If you want to set default values for `configure' scripts to share,
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Defining Variables
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Variables not defined in a site shell script can be set in the
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Unfortunately, this technique does not work for `CONFIG_SHELL' due to
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CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
`configure' Invocation
======================
`configure' recognizes the following options to control how it
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`--help'
`-h'
Print a summary of all of the options to `configure', and exit.
`--help=short'
`--help=recursive'
Print a summary of the options unique to this package's
`configure', and exit. The `short' variant lists options used
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also present in any nested packages.
`--version'
`-V'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE,
traditionally `config.cache'. FILE defaults to `/dev/null' to
disable caching.
`--config-cache'
`-C'
Alias for `--cache-file=config.cache'.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
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messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
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`--prefix=DIR'
Use DIR as the installation prefix. *note Installation Names::
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`--no-create'
`-n'
Run the configure checks, but stop before creating any output
files.
`configure' also accepts some other, not widely useful, options. Run
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Using test-server as a quickstart
---------------------------------
You need to regenerate the autotools and libtoolize stuff for your system
$ autoreconf
$ libtoolize
Then for a Fedora x86_86 box, the following config line was
needed:
./configure --prefix=/usr --libdir=/usr/lib64 --enable-openssl
For Apple systems, Christopher Baker reported that this is needed
(and I was told separately enabling openssl makes trouble somehow)
./configure CC="gcc -arch i386 -arch x86_64" CXX="g++ -arch i386 -arch
x86_64" CPP="gcc -E" CXXCPP="g++ -E" --enable-nofork
For mingw build, I did the following to get working build, ping test is
disabled when building this way
1) install mingw64_w32 compiler packages from Fedora
2) additionally install mingw64-zlib package
3) ./configure --prefix=/usr --enable-mingw --host=x86_64-w64-mingw32
4) make
otherwise if /usr/local/... and /usr/local/lib are OK then...
$ ./configure
$ make clean
$ make
$ sudo make install
$ libwebsockets-test-server
should be enough to get a test server listening on port 7861.
There are a couple of other possible configure options
--enable-nofork disables the fork into the background API
and removes all references to fork() and
pr_ctl() from the sources. Use it if your
platform doesn't support forking.
--enable-libcrypto by default libwebsockets uses its own
built-in md5 and sha-1 implementation for
simplicity. However the libcrypto ones
may be faster, and in a distro context it
may be highly desirable to use a common
library implementation for ease of security
upgrades. Give this configure option
to disable the built-in ones and force use
of the libcrypto (part of openssl) ones.
--with-client-cert-dir=dir tells the client ssl support where to
look for trust certificates to validate
the remote certificate against.
--enable-noping Don't try to build the ping test app
It needs some unixy environment that
may choke in other build contexts, this
lets you cleanly stop it being built
--enable-x-google-mux Enable experimental x-google-mux support
in the build (see notes later in document)
Testing server with a browser
-----------------------------
If you point your browser (eg, Chrome) to
http://127.0.0.1:7681
It will fetch a script in the form of test.html, and then run the
script in there on the browser to open a websocket connection.
Incrementing numbers should appear in the browser display.
Using SSL on the server side
----------------------------
To test it using SSL/WSS, just run the test server with
$ libwebsockets-test-server --ssl
and use the URL
https://127.0.0.1:7681
The connection will be entirely encrypted using some generated
certificates that your browser will not accept, since they are
not signed by any real Certificate Authority. Just accept the
certificates in the browser and the connection will proceed
in first https and then websocket wss, acting exactly the
same.
test-server.c is all that is needed to use libwebsockets for
serving both the script html over http and websockets.
Forkless operation
------------------
If your target device does not offer fork(), you can use
libwebsockets from your own main loop instead. Use the
configure option --nofork and simply call libwebsocket_service()
from your own main loop as shown in the test app sources.
Testing websocket client support
--------------------------------
If you run the test server as described above, you can also
connect to it using the test client as well as a browser.
$ libwebsockets-test-client localhost
will by default connect to the test server on localhost:7681
and print the dumb increment number from the server at the
same time as drawing random circles in the mirror protocol;
if you connect to the test server using a browser at the
same time you will be able to see the circles being drawn.
Testing SSL on the client side
------------------------------
To test SSL/WSS client action, just run the client test with
$ libwebsockets-test-client localhost --ssl
By default the client test applet is set to accept selfsigned
certificates used by the test server, this is indicated by the
use_ssl var being set to 2. Set it to 1 to reject any server
certificate that it doesn't have a trusted CA cert for.
Using the websocket ping utility
--------------------------------
libwebsockets-test-ping connects as a client to a remote
websocket server using 04 protocol and pings it like the
normal unix ping utility.
$ libwebsockets-test-ping localhost
handshake OK for protocol lws-mirror-protocol
Websocket PING localhost.localdomain (127.0.0.1) 64 bytes of data.
64 bytes from localhost: req=1 time=0.1ms
64 bytes from localhost: req=2 time=0.1ms
64 bytes from localhost: req=3 time=0.1ms
64 bytes from localhost: req=4 time=0.2ms
64 bytes from localhost: req=5 time=0.1ms
64 bytes from localhost: req=6 time=0.2ms
64 bytes from localhost: req=7 time=0.2ms
64 bytes from localhost: req=8 time=0.1ms
^C
--- localhost.localdomain websocket ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7458ms
rtt min/avg/max = 0.110/0.185/0.218 ms
$
By default it sends 64 byte payload packets using the 04
PING packet opcode type. You can change the payload size
using the -s= flag, up to a maximum of 125 mandated by the
04 standard.
Using the lws-mirror protocol that is provided by the test
server, libwebsockets-test-ping can also use larger payload
sizes up to 4096 is BINARY packets; lws-mirror will copy
them back to the client and they appear as a PONG. Use the
-m flag to select this operation.
The default interval between pings is 1s, you can use the -i=
flag to set this, including fractions like -i=0.01 for 10ms
interval.
Before you can even use the PING opcode that is part of the
standard, you must complete a handshake with a specified
protocol. By default lws-mirror-protocol is used which is
supported by the test server. But if you are using it on
another server, you can specify the protcol to handshake with
by --protocol=protocolname
Fraggle test app
----------------
By default it runs in server mode
$ libwebsockets-test-fraggle
libwebsockets test fraggle
(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> licensed under LGPL2.1
Compiled with SSL support, not using it
Listening on port 7681
server sees client connect
accepted v06 connection
Spamming 360 random fragments
Spamming session over, len = 371913. sum = 0x2D3C0AE
Spamming 895 random fragments
Spamming session over, len = 875970. sum = 0x6A74DA1
...
You need to run a second session in client mode, you have to
give the -c switch and the server address at least:
$ libwebsockets-test-fraggle -c localhost
libwebsockets test fraggle
(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> licensed under LGPL2.1
Client mode
Connecting to localhost:7681
denied deflate-stream extension
handshake OK for protocol fraggle-protocol
client connects to server
EOM received 371913 correctly from 360 fragments
EOM received 875970 correctly from 895 fragments
EOM received 247140 correctly from 258 fragments
EOM received 695451 correctly from 692 fragments
...
The fraggle test sends a random number up to 1024 fragmented websocket frames
each of a random size between 1 and 2001 bytes in a single message, then sends
a checksum and starts sending a new randomly sized and fragmented message.
The fraggle test client receives the same message fragments and computes the
same checksum using websocket framing to see when the message has ended. It
then accepts the server checksum message and compares that to its checksum.
proxy support
-------------
The http_proxy environment variable is respected by the client
connection code for both ws:// and wss://. It doesn't support
authentication yet.
You use it like this
export http_proxy=myproxy.com:3128
libwebsockets-test-client someserver.com
Websocket version supported
---------------------------
The websocket client code is 04 and 05 version, the server
supports 00/76 in text mode and 04 and 05 dynamically
per-connection depending on the version of the
client / browser.
External Polling Loop support
-----------------------------
libwebsockets maintains an internal poll() array for all of its
sockets, but you can instead integrate the sockets into an
external polling array. That's needed if libwebsockets will
cooperate with an existing poll array maintained by another
server.
Four callbacks LWS_CALLBACK_ADD_POLL_FD, LWS_CALLBACK_DEL_POLL_FD,
LWS_CALLBACK_SET_MODE_POLL_FD and LWS_CALLBACK_CLEAR_MODE_POLL_FD
appear in the callback for protocol 0 and allow interface code to
manage socket descriptors in other poll loops.
x-google-mux support
--------------------
Experimental and super-preliminary x-google-mux support is available if
enabled in ./configure with --enable-x-google-mux. Note that when changing
configurations, you will need to do a make distclean before, then the new
configure and then make ; make install. Don't forget the necessary other
flags for your platform as described at the top of the readme.
It has the following notes:
1) To enable it, reconfigure with --enable-x-google-mux
2) It deviates from the google standard by sending full
headers in the addchannel subcommand rather than just
changed ones from original connect
3) Quota is not implemented yet
However despite those caveats, in fact it can run the
test client reliably over one socket (both dumb-increment
and lws-mirror-protocol), you can open a browser on the
same test server too and see the circles, etc.
It also works compatibly with deflate-stream automatically.
2012-04-12 Andy Green <andy@warmcat.com>

130
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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.66])
AC_INIT(libwebsockets, 0.3, andy@warmcat.com)
AC_CONFIG_SRCDIR([test-server/test-server.c])
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])
LT_INIT(shared)
#AX_PTHREAD
# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_CONFIG_MACRO_DIR([m4])
#
#
#
AC_ARG_ENABLE(openssl,
[ --enable-openssl Enables https support and needs openssl libs],
[ openssl=yes
])
if test "x$openssl" = "xyes" ; then
AC_CHECK_LIB([ssl], [SSL_library_init])
CFLAGS="$CFLAGS -DLWS_OPENSSL_SUPPORT"
fi
#
#
#
AC_ARG_ENABLE(nofork,
[ --enable-nofork Disables fork-related options],
[ nofork=yes
])
if test "x$nofork" = "xyes" ; then
CFLAGS="$CFLAGS -DLWS_NO_FORK"
else
AC_FUNC_FORK
fi
#
#
#
AC_ARG_ENABLE(libcrypto,
[ --enable-libcrypto Use libcrypto MD5 and SHA1 implementations],
[ libcrypto=yes
])
if test "x$libcrypto" = "xyes" ; then
CFLAGS="$CFLAGS -DLWS_LIBCRYPTO"
LDFLAGS="$LDFLAGS -lcrypto"
fi
AM_CONDITIONAL(LIBCRYPTO, test x$libcrypto = xyes)
#
#
#
AC_ARG_ENABLE(x-google-mux,
[ --enable-x-google-mux Build experimental x-google-mux],
[ x_google_mux=yes
])
if test "x$x_google_mux" = "xyes" ; then
CFLAGS="$CFLAGS -DLWS_EXT_GOOGLE_MUX"
fi
AM_CONDITIONAL(EXT_GOOGLE_MUX, test x$x_google_mux = xyes)
#
#
#
AC_ARG_ENABLE(mingw,
[ --enable-mingw Using mingw compilers, disables ping test build],
[ mingw=yes
noping=yes
])
if test "x$mingw" = "xyes" ; then
CFLAGS="$CFLAGS -DLWS_MINGW_SUPPORT"
fi
AM_CONDITIONAL(MINGW, test x$mingw = xyes)
#
#
#
AC_ARG_WITH([client-cert-dir],
[AS_HELP_STRING([--with-client-cert-dir],[directory containing client certs, defaults to /etc/pki/tls/certs/])],
[clientcertdir=$withval],
[clientcertdir=/etc/pki/tls/certs/]
)
AC_SUBST([clientcertdir])
AC_SUBST([CFLAGS])
#
#
#
AC_ARG_ENABLE(noping,
[ --enable-noping Do not build ping test app, which has some unixy stuff in sources],
[ noping=yes
])
AM_CONDITIONAL(NOPING, test x$noping = xyes)
# Checks for header files.
AC_CHECK_HEADERS([zlib.h fcntl.h netinet/in.h stdlib.h string.h sys/socket.h unistd.h sys/prctl.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_CHECK_FUNCS([bzero memset socket strerror])
AC_CONFIG_FILES([Makefile
lib/Makefile
test-server/Makefile])
AC_OUTPUT

44
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lib_LTLIBRARIES=libwebsockets.la
include_HEADERS=libwebsockets.h
dist_libwebsockets_la_SOURCES=libwebsockets.c \
handshake.c \
parsers.c \
libwebsockets.h \
base64-decode.c \
client-handshake.c \
extension.c \
extension-deflate-stream.c \
private-libwebsockets.h
if EXT_GOOGLE_MUX
dist_libwebsockets_la_SOURCES += extension-x-google-mux.c
endif
if LIBCRYPTO
else
dist_libwebsockets_la_SOURCES += md5.c sha-1.c
endif
libwebsockets_la_CFLAGS:=-Wall -std=gnu99 -pedantic
libwebsockets_la_LDFLAGS:=
if MINGW
libwebsockets_la_CFLAGS+= -w -I../win32port/win32helpers -I ../win32port/zlib/
libwebsockets_la_LDFLAGS+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc
else
libwebsockets_la_CFLAGS+= -rdynamic -fPIC -Werror
libwebsockets_la_LDFLAGS+= -version-info 0:3
endif
libwebsockets_la_CFLAGS+= -c \
-DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
libwebsockets_la_LDFLAGS+= -lz
all-local:
../scripts/kernel-doc -html \
libwebsockets.c \
parsers.c \
client-handshake.c \
libwebsockets.h \
> ../libwebsockets-api-doc.html

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# Makefile.in generated by automake 1.11.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
# Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
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libwebsockets.c \
parsers.c \
client-handshake.c \
libwebsockets.h \
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

188
libs/libwebsockets/lib/base64-decode.c Normal file
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@ -0,0 +1,188 @@
/*
* This code originally came from here
*
* http://base64.sourceforge.net/b64.c
*
* with the following license:
*
* LICENCE: Copyright (c) 2001 Bob Trower, Trantor Standard Systems Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the
* Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
* OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* VERSION HISTORY:
* Bob Trower 08/04/01 -- Create Version 0.00.00B
*
* I cleaned it up quite a bit to match the (linux kernel) style of the rest
* of libwebsockets; this version is under LGPL2 like the rest of libwebsockets
* since he explictly allows sublicensing, but I give the URL above so you can
* get the original with Bob's super-liberal terms directly if you prefer.
*/
#include <stdio.h>
#include <string.h>
static const char encode[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz0123456789+/";
static const char decode[] = "|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW"
"$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
int
lws_b64_encode_string(const char *in, int in_len, char *out, int out_size)
{
unsigned char triple[3];
int i;
int len;
int line = 0;
int done = 0;
while (in_len) {
len = 0;
for (i = 0; i < 3; i++) {
if (in_len) {
triple[i] = *in++;
len++;
in_len--;
} else
triple[i] = 0;
}
if (!len)
continue;
if (done + 4 >= out_size)
return -1;
*out++ = encode[triple[0] >> 2];
*out++ = encode[((triple[0] & 0x03) << 4) |
((triple[1] & 0xf0) >> 4)];
*out++ = (len > 1 ? encode[((triple[1] & 0x0f) << 2) |
((triple[2] & 0xc0) >> 6)] : '=');
*out++ = (len > 2 ? encode[triple[2] & 0x3f] : '=');
done += 4;
line += 4;
}
if (done + 1 >= out_size)
return -1;
*out++ = '\0';
return done;
}
/*
* returns length of decoded string in out, or -1 if out was too small
* according to out_size
*/
int
lws_b64_decode_string(const char *in, char *out, int out_size)
{
int len;
int i;
int done = 0;
unsigned char v;
unsigned char quad[4];
while (*in) {
len = 0;
for (i = 0; i < 4 && *in; i++) {
v = 0;
while (*in && !v) {
v = *in++;
v = (v < 43 || v > 122) ? 0 : decode[v - 43];
if (v)
v = (v == '$') ? 0 : v - 61;
if (*in) {
len++;
if (v)
quad[i] = v - 1;
} else
quad[i] = 0;
}
}
if (!len)
continue;
if (out_size < (done + len - 1))
/* out buffer is too small */
return -1;
if (len >= 2)
*out++ = quad[0] << 2 | quad[1] >> 4;
if (len >= 3)
*out++ = quad[1] << 4 | quad[2] >> 2;
if (len >= 4)
*out++ = ((quad[2] << 6) & 0xc0) | quad[3];
done += len - 1;
}
if (done + 1 >= out_size)
return -1;
*out++ = '\0';
return done;
}
int
lws_b64_selftest(void)
{
char buf[64];
int n;
int test;
static const char * const plaintext[] = {
"sanity check base 64"
};
static const char * const coded[] = {
"c2FuaXR5IGNoZWNrIGJhc2UgNjQ="
};
for (test = 0; test < sizeof plaintext / sizeof(plaintext[0]); test++) {
buf[sizeof(buf) - 1] = '\0';
n = lws_b64_encode_string(plaintext[test],
strlen(plaintext[test]), buf, sizeof buf);
if (n != strlen(coded[test]) || strcmp(buf, coded[test])) {
fprintf(stderr, "Failed lws_b64 encode selftest "
"%d result '%s' %d\n", test, buf, n);
return -1;
}
buf[sizeof(buf) - 1] = '\0';
n = lws_b64_decode_string(coded[test], buf, sizeof buf);
if (n != strlen(plaintext[test]) ||
strcmp(buf, plaintext[test])) {
fprintf(stderr, "Failed lws_b64 decode selftest "
"%d result '%s' %d\n", test, buf, n);
return -1;
}
}
return 0;
}

408
libs/libwebsockets/lib/client-handshake.c Normal file
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@ -0,0 +1,408 @@
#include "private-libwebsockets.h"
struct libwebsocket *__libwebsocket_client_connect_2(
struct libwebsocket_context *context,
struct libwebsocket *wsi
) {
struct pollfd pfd;
struct timeval tv;
struct hostent *server_hostent;
struct sockaddr_in server_addr;
int n;
int plen = 0;
char pkt[512];
int opt = 1;
#if defined(__APPLE__)
struct protoent *tcp_proto;
#endif
debug("__libwebsocket_client_connect_2\n");
wsi->candidate_children_list = NULL;
/*
* proxy?
*/
if (context->http_proxy_port) {
plen = sprintf(pkt, "CONNECT %s:%u HTTP/1.0\x0d\x0a"
"User-agent: libwebsockets\x0d\x0a"
/*Proxy-authorization: basic aGVsbG86d29ybGQ= */
"\x0d\x0a", wsi->c_address, wsi->c_port);
/* OK from now on we talk via the proxy */
free(wsi->c_address);
wsi->c_address = strdup(context->http_proxy_address);
wsi->c_port = context->http_proxy_port;
}
/*
* prepare the actual connection (to the proxy, if any)
*/
debug("__libwebsocket_client_connect_2: address %s", wsi->c_address);
server_hostent = gethostbyname(wsi->c_address);
if (server_hostent == NULL) {
fprintf(stderr, "Unable to get host name from %s\n",
wsi->c_address);
goto oom4;
}
wsi->sock = socket(AF_INET, SOCK_STREAM, 0);
if (wsi->sock < 0) {
fprintf(stderr, "Unable to open socket\n");
goto oom4;
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(wsi->c_port);
server_addr.sin_addr = *((struct in_addr *)server_hostent->h_addr);
bzero(&server_addr.sin_zero, 8);
/* Disable Nagle */
#if !defined(__APPLE__)
setsockopt(wsi->sock, SOL_TCP, TCP_NODELAY,
(const void *)&opt, sizeof(opt));
#else
tcp_proto = getprotobyname("TCP");
setsockopt(wsi->sock, tcp_proto->p_proto, TCP_NODELAY,
&opt, sizeof(opt));
#endif
/* Set receiving timeout */
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
setsockopt(wsi->sock, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof tv);
if (connect(wsi->sock, (struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1) {
fprintf(stderr, "Connect failed\n");
#ifdef WIN32
closesocket(wsi->sock);
#else
close(wsi->sock);
#endif
goto oom4;
}
debug("connected\n");
/* into fd -> wsi hashtable */
insert_wsi(context, wsi);
/* into internal poll list */
context->fds[context->fds_count].fd = wsi->sock;
context->fds[context->fds_count].revents = 0;
context->fds[context->fds_count++].events = POLLIN;
/* external POLL support via protocol 0 */
context->protocols[0].callback(context, wsi,
LWS_CALLBACK_ADD_POLL_FD,
(void *)(long)wsi->sock, NULL, POLLIN);
/* we are connected to server, or proxy */
if (context->http_proxy_port) {
n = send(wsi->sock, pkt, plen, 0);
if (n < 0) {
#ifdef WIN32
closesocket(wsi->sock);
#else
close(wsi->sock);
#endif
fprintf(stderr, "ERROR writing to proxy socket\n");
goto bail1;
}
libwebsocket_set_timeout(wsi,
PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE, 5);
wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY;
return wsi;
}
/*
* provoke service to issue the handshake directly
* we need to do it this way because in the proxy case, this is the
* next state and executed only if and when we get a good proxy
* response inside the state machine
*/
wsi->mode = LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE;
pfd.fd = wsi->sock;
pfd.revents = POLLIN;
if (libwebsocket_service_fd(context, &pfd) < 0)
goto oom4;
return wsi;
oom4:
if (wsi->c_protocol)
free(wsi->c_protocol);
if (wsi->c_origin)
free(wsi->c_origin);
free(wsi->c_host);
free(wsi->c_path);
bail1:
free(wsi);
return NULL;
}
/**
* libwebsocket_client_connect() - Connect to another websocket server
* @context: Websocket context
* @address: Remote server address, eg, "myserver.com"
* @port: Port to connect to on the remote server, eg, 80
* @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
* signed certs
* @path: Websocket path on server
* @host: Hostname on server
* @origin: Socket origin name
* @protocol: Comma-separated list of protocols being asked for from
* the server, or just one. The server will pick the one it
* likes best.
* @ietf_version_or_minus_one: -1 to ask to connect using the default, latest
* protocol supported, or the specific protocol ordinal
*
* This function creates a connection to a remote server
*/
struct libwebsocket *
libwebsocket_client_connect(struct libwebsocket_context *context,
const char *address,
int port,
int ssl_connection,
const char *path,
const char *host,
const char *origin,
const char *protocol,
int ietf_version_or_minus_one)
{
struct libwebsocket *wsi;
int n;
int m;
struct libwebsocket_extension *ext;
int handled;
#ifndef LWS_OPENSSL_SUPPORT
if (ssl_connection) {
fprintf(stderr, "libwebsockets not configured for ssl\n");
return NULL;
}
#endif
wsi = malloc(sizeof(struct libwebsocket));
if (wsi == NULL)
goto bail1;
memset(wsi, 0, sizeof *wsi);
/* -1 means just use latest supported */
if (ietf_version_or_minus_one == -1)
ietf_version_or_minus_one = SPEC_LATEST_SUPPORTED;
wsi->ietf_spec_revision = ietf_version_or_minus_one;
wsi->name_buffer_pos = 0;
wsi->user_space = NULL;
wsi->state = WSI_STATE_CLIENT_UNCONNECTED;
wsi->pings_vs_pongs = 0;
wsi->protocol = NULL;
wsi->pending_timeout = NO_PENDING_TIMEOUT;
wsi->count_active_extensions = 0;
#ifdef LWS_OPENSSL_SUPPORT
wsi->use_ssl = ssl_connection;
#endif
wsi->c_port = port;
wsi->c_address = strdup(address);
/* copy parameters over so state machine has access */
wsi->c_path = malloc(strlen(path) + 1);
if (wsi->c_path == NULL)
goto bail1;
strcpy(wsi->c_path, path);
wsi->c_host = malloc(strlen(host) + 1);
if (wsi->c_host == NULL)
goto oom1;
strcpy(wsi->c_host, host);
if (origin) {
wsi->c_origin = malloc(strlen(origin) + 1);
strcpy(wsi->c_origin, origin);
if (wsi->c_origin == NULL)
goto oom2;
} else
wsi->c_origin = NULL;
wsi->c_callback = NULL;
if (protocol) {
const char *pc;
struct libwebsocket_protocols *pp;
wsi->c_protocol = malloc(strlen(protocol) + 1);
if (wsi->c_protocol == NULL)
goto oom3;
strcpy(wsi->c_protocol, protocol);
pc = protocol;
while (*pc && *pc != ',')
pc++;
n = pc - protocol;
pp = context->protocols;
while (pp->name && !wsi->c_callback) {
if (!strncmp(protocol, pp->name, n))
wsi->c_callback = pp->callback;
pp++;
}
} else
wsi->c_protocol = NULL;
if (!wsi->c_callback)
wsi->c_callback = context->protocols[0].callback;
/* set up appropriate masking */
wsi->xor_mask = xor_no_mask;
switch (wsi->ietf_spec_revision) {
case 0:
break;
case 4:
wsi->xor_mask = xor_mask_04;
break;
case 5:
case 6:
case 7:
case 8:
case 13:
wsi->xor_mask = xor_mask_05;
break;
default:
fprintf(stderr,
"Client ietf version %d not supported\n",
wsi->ietf_spec_revision);
goto oom4;
}
/* force no mask if he asks for that though */
if (context->options & LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK)
wsi->xor_mask = xor_no_mask;
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
wsi->utf8_token[n].token = NULL;
wsi->utf8_token[n].token_len = 0;
}
/*
* Check with each extension if it is able to route and proxy this
* connection for us. For example, an extension like x-google-mux
* can handle this and then we don't need an actual socket for this
* connection.
*/
handled = 0;
ext = context->extensions;
n = 0;
while (ext && ext->callback && !handled) {
m = ext->callback(context, ext, wsi,
LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION,
(void *)(long)n, (void *)address, port);
if (m)
handled = 1;
ext++;
n++;
}
if (handled) {
debug("libwebsocket_client_connect: ext handling conn\n");
libwebsocket_set_timeout(wsi,
PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE, 5);
wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT;
return wsi;
}
debug("libwebsocket_client_connect: direct conn\n");
return __libwebsocket_client_connect_2(context, wsi);
oom4:
if (wsi->c_protocol)
free(wsi->c_protocol);
oom3:
if (wsi->c_origin)
free(wsi->c_origin);
oom2:
free(wsi->c_host);
oom1:
free(wsi->c_path);
bail1:
free(wsi);
return NULL;
}
/**
* libwebsocket_client_connect_extended() - Connect to another websocket server
* @context: Websocket context
* @address: Remote server address, eg, "myserver.com"
* @port: Port to connect to on the remote server, eg, 80
* @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
* signed certs
* @path: Websocket path on server
* @host: Hostname on server
* @origin: Socket origin name
* @protocol: Comma-separated list of protocols being asked for from
* the server, or just one. The server will pick the one it
* likes best.
* @ietf_version_or_minus_one: -1 to ask to connect using the default, latest
* protocol supported, or the specific protocol ordinal
* @userdata: Pre-allocated user data
*
* This function creates a connection to a remote server
*/
struct libwebsocket *
libwebsocket_client_connect_extended(struct libwebsocket_context *context,
const char *address,
int port,
int ssl_connection,
const char *path,
const char *host,
const char *origin,
const char *protocol,
int ietf_version_or_minus_one,
void *userdata)
{
struct libwebsocket *ws =
libwebsocket_client_connect(context, address, port, ssl_connection, path, host, origin, protocol, ietf_version_or_minus_one) ;
if (ws && !ws->user_space && userdata)
ws->user_space = userdata ;
return ws ;
}

150
libs/libwebsockets/lib/extension-deflate-stream.c Normal file
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@ -0,0 +1,150 @@
#include "private-libwebsockets.h"
#include "extension-deflate-stream.h"
#include <stdio.h>
#include <string.h>
#include <assert.h>
#define LWS_ZLIB_WINDOW_BITS 15
#define LWS_ZLIB_MEMLEVEL 8
int lws_extension_callback_deflate_stream(
struct libwebsocket_context *context,
struct libwebsocket_extension *ext,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons reason,
void *user, void *in, size_t len)
{
struct lws_ext_deflate_stream_conn *conn =
(struct lws_ext_deflate_stream_conn *)user;
int n;
struct lws_tokens *eff_buf = (struct lws_tokens *)in;
switch (reason) {
/*
* for deflate-stream, both client and server sides act the same
*/
case LWS_EXT_CALLBACK_CLIENT_CONSTRUCT:
case LWS_EXT_CALLBACK_CONSTRUCT:
conn->zs_in.zalloc = conn->zs_out.zalloc = Z_NULL;
conn->zs_in.zfree = conn->zs_out.zfree = Z_NULL;
conn->zs_in.opaque = conn->zs_out.opaque = Z_NULL;
n = inflateInit2(&conn->zs_in, -LWS_ZLIB_WINDOW_BITS);
if (n != Z_OK) {
fprintf(stderr, "deflateInit returned %d\n", n);
return 1;
}
n = deflateInit2(&conn->zs_out,
DEFLATE_STREAM_COMPRESSION_LEVEL, Z_DEFLATED,
-LWS_ZLIB_WINDOW_BITS, LWS_ZLIB_MEMLEVEL,
Z_DEFAULT_STRATEGY);
if (n != Z_OK) {
fprintf(stderr, "deflateInit returned %d\n", n);
return 1;
}
debug("zlibs constructed\n");
break;
case LWS_EXT_CALLBACK_DESTROY:
(void)inflateEnd(&conn->zs_in);
(void)deflateEnd(&conn->zs_out);
debug("zlibs destructed\n");
break;
case LWS_EXT_CALLBACK_PACKET_RX_PREPARSE:
/*
* inflate the incoming compressed data
* Notice, length may be 0 and pointer NULL
* in the case we are flushing with nothing new coming in
*/
conn->zs_in.next_in = (unsigned char *)eff_buf->token;
conn->zs_in.avail_in = eff_buf->token_len;
conn->zs_in.next_out = conn->buf;
conn->zs_in.avail_out = sizeof(conn->buf);
n = inflate(&conn->zs_in, Z_SYNC_FLUSH);
switch (n) {
case Z_NEED_DICT:
case Z_DATA_ERROR:
case Z_MEM_ERROR:
/*
* screwed.. close the connection... we will get a
* destroy callback to take care of closing nicely
*/
fprintf(stderr, "zlib error inflate %d\n", n);
return -1;
}
/* rewrite the buffer pointers and length */
eff_buf->token = (char *)conn->buf;
eff_buf->token_len = sizeof(conn->buf) - conn->zs_in.avail_out;
/*
* if we filled the output buffer, signal that we likely have
* more and need to be called again
*/
if (eff_buf->token_len == sizeof(conn->buf))
return 1;
/* we don't need calling again until new input data comes */
return 0;
case LWS_EXT_CALLBACK_FLUSH_PENDING_TX:
case LWS_EXT_CALLBACK_PACKET_TX_PRESEND:
/*
* deflate the outgoing compressed data
*/
conn->zs_out.next_in = (unsigned char *)eff_buf->token;
conn->zs_out.avail_in = eff_buf->token_len;
conn->zs_out.next_out = conn->buf;
conn->zs_out.avail_out = sizeof(conn->buf);
n = Z_PARTIAL_FLUSH;
if (reason == LWS_EXT_CALLBACK_FLUSH_PENDING_TX)
n = Z_FULL_FLUSH;
n = deflate(&conn->zs_out, n);
if (n == Z_STREAM_ERROR) {
/*
* screwed.. close the connection... we will get a
* destroy callback to take care of closing nicely
*/
fprintf(stderr, "zlib error deflate\n");
return -1;
}
/* rewrite the buffer pointers and length */
eff_buf->token = (char *)conn->buf;
eff_buf->token_len = sizeof(conn->buf) - conn->zs_out.avail_out;
/*
* if we filled the output buffer, signal that we likely have
* more and need to be called again... even in deflate case
* we might sometimes need to spill more than came in
*/
if (eff_buf->token_len == sizeof(conn->buf))
return 1;
/* we don't need calling again until new input data comes */
return 0;
default:
break;
}
return 0;
}

18
libs/libwebsockets/lib/extension-deflate-stream.h Normal file
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@ -0,0 +1,18 @@
#include <zlib.h>
#define DEFLATE_STREAM_CHUNK 128
#define DEFLATE_STREAM_COMPRESSION_LEVEL 1
struct lws_ext_deflate_stream_conn {
z_stream zs_in;
z_stream zs_out;
unsigned char buf[2000];
};
extern int lws_extension_callback_deflate_stream(
struct libwebsocket_context *context,
struct libwebsocket_extension *ext,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons reason,
void *user, void *in, size_t len);

1223
libs/libwebsockets/lib/extension-x-google-mux.c Normal file
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File diff suppressed because it is too large Load Diff

96
libs/libwebsockets/lib/extension-x-google-mux.h Normal file
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@ -0,0 +1,96 @@
#if 0
#ifdef WIN32
static
#else
static inline
#endif
void muxdebug(const char *format, ...)
{
va_list ap;
va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap);
}
#else
#ifdef WIN32
static
#else
static inline
#endif
void muxdebug(const char *format, ...)
{
}
#endif
#define MAX_XGM_SUBCHANNELS 8192
enum lws_ext_x_google_mux__parser_states {
LWS_EXT_XGM_STATE__MUX_BLOCK_1,
LWS_EXT_XGM_STATE__MUX_BLOCK_2,
LWS_EXT_XGM_STATE__MUX_BLOCK_3,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_1,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN16_2,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_1,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_2,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_3,
LWS_EXT_XGM_STATE__ADDCHANNEL_LEN32_4,
LWS_EXT_XGM_STATE__ADDCHANNEL_HEADERS,
LWS_EXT_XGM_STATE__FLOWCONTROL_1,
LWS_EXT_XGM_STATE__FLOWCONTROL_2,
LWS_EXT_XGM_STATE__FLOWCONTROL_3,
LWS_EXT_XGM_STATE__FLOWCONTROL_4,
LWS_EXT_XGM_STATE__DATA,
};
enum lws_ext_x_goole_mux__mux_opcodes {
LWS_EXT_XGM_OPC__DATA,
LWS_EXT_XGM_OPC__ADDCHANNEL,
LWS_EXT_XGM_OPC__DROPCHANNEL,
LWS_EXT_XGM_OPC__FLOWCONTROL,
LWS_EXT_XGM_OPC__RESERVED_4,
LWS_EXT_XGM_OPC__RESERVED_5,
LWS_EXT_XGM_OPC__RESERVED_6,
LWS_EXT_XGM_OPC__RESERVED_7,
};
/* one of these per context (server or client) */
struct lws_ext_x_google_mux_context {
/*
* these are listing physical connections, not children sharing a
* parent mux physical connection
*/
struct libwebsocket *wsi_muxconns[MAX_CLIENTS];
/*
* when this is < 2, we do not do any mux blocks
* just pure websockets
*/
int active_conns;
};
/* one of these per connection (server or client) */
struct lws_ext_x_google_mux_conn {
enum lws_ext_x_goole_mux__mux_opcodes block_subopcode;
int block_subchannel;
unsigned int length;
enum lws_ext_x_google_mux__parser_states state;
/* child points to the mux wsi using this */
struct libwebsocket *wsi_parent;
int subchannel;
struct libwebsocket *wsi_children[MAX_CLIENTS];
int highest_child_subchannel;
char awaiting_POLLOUT;
int count_children_needing_POLLOUT;
int sticky_mux_used;
int defeat_mux_opcode_wrapping;
int original_ch1_closed;
int ignore_cmd;
};
extern int
lws_extension_callback_x_google_mux(struct libwebsocket_context *context,
struct libwebsocket_extension *ext,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons reason,
void *user, void *in, size_t len);

22
libs/libwebsockets/lib/extension.c Normal file
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@ -0,0 +1,22 @@
#include "private-libwebsockets.h"
#include "extension-deflate-stream.h"
#include "extension-x-google-mux.h"
struct libwebsocket_extension libwebsocket_internal_extensions[] = {
#ifdef LWS_EXT_GOOGLE_MUX
{
"x-google-mux",
lws_extension_callback_x_google_mux,
sizeof (struct lws_ext_x_google_mux_conn)
},
#endif
{
"deflate-stream",
lws_extension_callback_deflate_stream,
sizeof (struct lws_ext_deflate_stream_conn)
},
{ /* terminator */
NULL, NULL, 0
}
};

722
libs/libwebsockets/lib/handshake.c Normal file
View File

@ -0,0 +1,722 @@
/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "private-libwebsockets.h"
#define LWS_CPYAPP(ptr, str) { strcpy(ptr, str); ptr += strlen(str); }
#define LWS_CPYAPP_TOKEN(ptr, tok) { strcpy(p, wsi->utf8_token[tok].token); \
p += wsi->utf8_token[tok].token_len; }
static int
interpret_key(const char *key, unsigned long *result)
{
char digits[20];
int digit_pos = 0;
const char *p = key;
unsigned int spaces = 0;
unsigned long acc = 0;
int rem = 0;
while (*p) {
if (!isdigit(*p)) {
p++;
continue;
}
if (digit_pos == sizeof(digits) - 1)
return -1;
digits[digit_pos++] = *p++;
}
digits[digit_pos] = '\0';
if (!digit_pos)
return -2;
while (*key) {
if (*key == ' ')
spaces++;
key++;
}
if (!spaces)
return -3;
p = &digits[0];
while (*p) {
rem = (rem * 10) + ((*p++) - '0');
acc = (acc * 10) + (rem / spaces);
rem -= (rem / spaces) * spaces;
}
if (rem) {
fprintf(stderr, "nonzero handshake remainder\n");
return -1;
}
*result = acc;
return 0;
}
static int
handshake_00(struct libwebsocket_context *context, struct libwebsocket *wsi)
{
unsigned long key1, key2;
unsigned char sum[16];
char *response;
char *p;
int n;
/* Confirm we have all the necessary pieces */
if (!wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len ||
!wsi->utf8_token[WSI_TOKEN_HOST].token_len ||
!wsi->utf8_token[WSI_TOKEN_CHALLENGE].token_len ||
!wsi->utf8_token[WSI_TOKEN_KEY1].token_len ||
!wsi->utf8_token[WSI_TOKEN_KEY2].token_len)
/* completed header processing, but missing some bits */
goto bail;
/* allocate the per-connection user memory (if any) */
if (wsi->protocol->per_session_data_size &&
!libwebsocket_ensure_user_space(wsi))
goto bail;
/* create the response packet */
/* make a buffer big enough for everything */
response = malloc(256 +
wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len +
wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len +
wsi->utf8_token[WSI_TOKEN_HOST].token_len +
wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len +
wsi->utf8_token[WSI_TOKEN_GET_URI].token_len +
wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len);
if (!response) {
fprintf(stderr, "Out of memory for response buffer\n");
goto bail;
}
p = response;
LWS_CPYAPP(p, "HTTP/1.1 101 WebSocket Protocol Handshake\x0d\x0a"
"Upgrade: WebSocket\x0d\x0a"
"Connection: Upgrade\x0d\x0a"
"Sec-WebSocket-Origin: ");
strcpy(p, wsi->utf8_token[WSI_TOKEN_ORIGIN].token);
p += wsi->utf8_token[WSI_TOKEN_ORIGIN].token_len;
#ifdef LWS_OPENSSL_SUPPORT
if (wsi->ssl) {
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: wss://");
} else {
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: ws://");
}
#else
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Location: ws://");
#endif
LWS_CPYAPP_TOKEN(p, WSI_TOKEN_HOST);
LWS_CPYAPP_TOKEN(p, WSI_TOKEN_GET_URI);
if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token) {
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Protocol: ");
LWS_CPYAPP_TOKEN(p, WSI_TOKEN_PROTOCOL);
}
LWS_CPYAPP(p, "\x0d\x0a\x0d\x0a");
/* convert the two keys into 32-bit integers */
if (interpret_key(wsi->utf8_token[WSI_TOKEN_KEY1].token, &key1))
goto bail;
if (interpret_key(wsi->utf8_token[WSI_TOKEN_KEY2].token, &key2))
goto bail;
/* lay them out in network byte order (MSB first */
sum[0] = key1 >> 24;
sum[1] = key1 >> 16;
sum[2] = key1 >> 8;
sum[3] = key1;
sum[4] = key2 >> 24;
sum[5] = key2 >> 16;
sum[6] = key2 >> 8;
sum[7] = key2;
/* follow them with the challenge token we were sent */
memcpy(&sum[8], wsi->utf8_token[WSI_TOKEN_CHALLENGE].token, 8);
/*
* compute the md5sum of that 16-byte series and use as our
* payload after our headers
*/
MD5(sum, 16, (unsigned char *)p);
p += 16;
/* it's complete: go ahead and send it */
debug("issuing response packet %d len\n", (int)(p - response));
#ifdef DEBUG
fwrite(response, 1, p - response, stderr);
#endif
n = libwebsocket_write(wsi, (unsigned char *)response,
p - response, LWS_WRITE_HTTP);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
goto bail;
}
/* alright clean up and set ourselves into established state */
free(response);
wsi->state = WSI_STATE_ESTABLISHED;
wsi->lws_rx_parse_state = LWS_RXPS_NEW;
/* notify user code that we're ready to roll */
if (wsi->protocol->callback)
wsi->protocol->callback(wsi->protocol->owning_server,
wsi, LWS_CALLBACK_ESTABLISHED,
wsi->user_space, NULL, 0);
return 0;
bail:
return -1;
}
/*
* Perform the newer BASE64-encoded handshake scheme
*/
static int
handshake_0405(struct libwebsocket_context *context, struct libwebsocket *wsi)
{
static const char *websocket_magic_guid_04 =
"258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
static const char *websocket_magic_guid_04_masking =
"61AC5F19-FBBA-4540-B96F-6561F1AB40A8";
char accept_buf[MAX_WEBSOCKET_04_KEY_LEN + 37];
char nonce_buf[256];
char mask_summing_buf[256 + MAX_WEBSOCKET_04_KEY_LEN + 37];
unsigned char hash[20];
int n;
char *response;
char *p;
char *m = mask_summing_buf;
int nonce_len = 0;
int accept_len;
char *c;
char ext_name[128];
struct libwebsocket_extension *ext;
int ext_count = 0;
int more = 1;
if (!wsi->utf8_token[WSI_TOKEN_HOST].token_len ||
!wsi->utf8_token[WSI_TOKEN_KEY].token_len) {
debug("handshake_04 missing pieces\n");
/* completed header processing, but missing some bits */
goto bail;
}
if (wsi->utf8_token[WSI_TOKEN_KEY].token_len >=
MAX_WEBSOCKET_04_KEY_LEN) {
fprintf(stderr, "Client sent handshake key longer "
"than max supported %d\n", MAX_WEBSOCKET_04_KEY_LEN);
goto bail;
}
strcpy(accept_buf, wsi->utf8_token[WSI_TOKEN_KEY].token);
strcpy(accept_buf + wsi->utf8_token[WSI_TOKEN_KEY].token_len,
websocket_magic_guid_04);
SHA1((unsigned char *)accept_buf,
wsi->utf8_token[WSI_TOKEN_KEY].token_len +
strlen(websocket_magic_guid_04), hash);
accept_len = lws_b64_encode_string((char *)hash, 20, accept_buf,
sizeof accept_buf);
if (accept_len < 0) {
fprintf(stderr, "Base64 encoded hash too long\n");
goto bail;
}
/* allocate the per-connection user memory (if any) */
if (wsi->protocol->per_session_data_size &&
!libwebsocket_ensure_user_space(wsi))
goto bail;
/* create the response packet */
/* make a buffer big enough for everything */
response = malloc(256 +
wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len +
wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len +
wsi->utf8_token[WSI_TOKEN_PROTOCOL].token_len);
if (!response) {
fprintf(stderr, "Out of memory for response buffer\n");
goto bail;
}
p = response;
LWS_CPYAPP(p, "HTTP/1.1 101 Switching Protocols\x0d\x0a"
"Upgrade: WebSocket\x0d\x0a"
"Connection: Upgrade\x0d\x0a"
"Sec-WebSocket-Accept: ");
strcpy(p, accept_buf);
p += accept_len;
if (wsi->ietf_spec_revision == 4) {
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Nonce: ");
/* select the nonce */
n = libwebsockets_get_random(wsi->protocol->owning_server,
hash, 16);
if (n != 16) {
fprintf(stderr, "Unable to read random device %s %d\n",
SYSTEM_RANDOM_FILEPATH, n);
if (wsi->user_space)
free(wsi->user_space);
goto bail;
}
/* encode the nonce */
nonce_len = lws_b64_encode_string((const char *)hash, 16,
nonce_buf, sizeof nonce_buf);
if (nonce_len < 0) {
fprintf(stderr, "Failed to base 64 encode the nonce\n");
if (wsi->user_space)
free(wsi->user_space);
goto bail;
}
/* apply the nonce */
strcpy(p, nonce_buf);
p += nonce_len;
}
if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token) {
LWS_CPYAPP(p, "\x0d\x0aSec-WebSocket-Protocol: ");
LWS_CPYAPP_TOKEN(p, WSI_TOKEN_PROTOCOL);
}
/*
* Figure out which extensions the client has that we want to
* enable on this connection, and give him back the list
*/
if (wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token_len) {
/*
* break down the list of client extensions
* and go through them
*/
c = wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token;
debug("wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token = %s\n",
wsi->utf8_token[WSI_TOKEN_EXTENSIONS].token);
wsi->count_active_extensions = 0;
n = 0;
while (more) {
if (*c && (*c != ',' && *c != ' ' && *c != '\t')) {
ext_name[n] = *c++;
if (n < sizeof(ext_name) - 1)
n++;
continue;
}
ext_name[n] = '\0';
if (!*c)
more = 0;
else {
c++;
if (!n)
continue;
}
/* check a client's extension against our support */
ext = wsi->protocol->owning_server->extensions;
while (ext && ext->callback) {
if (strcmp(ext_name, ext->name)) {
ext++;
continue;
}
/*
* oh, we do support this one he
* asked for... but let's ask user
* code if it's OK to apply it on this
* particular connection + protocol
*/
n = wsi->protocol->owning_server->
protocols[0].callback(
wsi->protocol->owning_server,
wsi,
LWS_CALLBACK_CONFIRM_EXTENSION_OKAY,
wsi->user_space, ext_name, 0);
/*
* zero return from callback means
* go ahead and allow the extension,
* it's what we get if the callback is
* unhandled
*/
if (n) {
ext++;
continue;
}
/* apply it */
if (ext_count)
*p++ = ',';
else
LWS_CPYAPP(p,
"\x0d\x0aSec-WebSocket-Extensions: ");
p += sprintf(p, "%s", ext_name);
ext_count++;
/* instantiate the extension on this conn */
wsi->active_extensions_user[
wsi->count_active_extensions] =
malloc(ext->per_session_data_size);
memset(wsi->active_extensions_user[
wsi->count_active_extensions], 0,
ext->per_session_data_size);
wsi->active_extensions[
wsi->count_active_extensions] = ext;
/* allow him to construct his context */
ext->callback(wsi->protocol->owning_server,
ext, wsi,
LWS_EXT_CALLBACK_CONSTRUCT,
wsi->active_extensions_user[
wsi->count_active_extensions], NULL, 0);
wsi->count_active_extensions++;
debug("wsi->count_active_extensions <- %d",
wsi->count_active_extensions);
ext++;
}
n = 0;
}
}
/* end of response packet */
LWS_CPYAPP(p, "\x0d\x0a\x0d\x0a");
if (wsi->ietf_spec_revision == 4) {
/*
* precompute the masking key the client will use from the SHA1
* hash of ( base 64 client key we were sent, concatenated with
* the bse 64 nonce we sent, concatenated with a magic constant
* guid specified by the 04 standard )
*
* We store the hash in the connection's wsi ready to use with
* undoing the masking the client has done on framed data it
* sends (we send our data to the client in clear).
*/
strcpy(mask_summing_buf, wsi->utf8_token[WSI_TOKEN_KEY].token);
m += wsi->utf8_token[WSI_TOKEN_KEY].token_len;
strcpy(m, nonce_buf);
m += nonce_len;
strcpy(m, websocket_magic_guid_04_masking);
m += strlen(websocket_magic_guid_04_masking);
SHA1((unsigned char *)mask_summing_buf, m - mask_summing_buf,
wsi->masking_key_04);
}
if (!lws_any_extension_handled(context, wsi,
LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX,
response, p - response)) {
/* okay send the handshake response accepting the connection */
debug("issuing response packet %d len\n", (int)(p - response));
#ifdef DEBUG
fwrite(response, 1, p - response, stderr);
#endif
n = libwebsocket_write(wsi, (unsigned char *)response,
p - response, LWS_WRITE_HTTP);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
goto bail;
}
}
/* alright clean up and set ourselves into established state */
free(response);
wsi->state = WSI_STATE_ESTABLISHED;
wsi->lws_rx_parse_state = LWS_RXPS_NEW;
wsi->rx_packet_length = 0;
/* notify user code that we're ready to roll */
if (wsi->protocol->callback)
wsi->protocol->callback(wsi->protocol->owning_server,
wsi, LWS_CALLBACK_ESTABLISHED,
wsi->user_space, NULL, 0);
return 0;
bail:
return -1;
}
/*
* -04 of the protocol (actually the 80th version) has a radically different
* handshake. The 04 spec gives the following idea
*
* The handshake from the client looks as follows:
*
* GET /chat HTTP/1.1
* Host: server.example.com
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
* Sec-WebSocket-Origin: http://example.com
* Sec-WebSocket-Protocol: chat, superchat
* Sec-WebSocket-Version: 4
*
* The handshake from the server looks as follows:
*
* HTTP/1.1 101 Switching Protocols
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Accept: me89jWimTRKTWwrS3aRrL53YZSo=
* Sec-WebSocket-Nonce: AQIDBAUGBwgJCgsMDQ4PEC==
* Sec-WebSocket-Protocol: chat
*/
/*
* We have to take care about parsing because the headers may be split
* into multiple fragments. They may contain unknown headers with arbitrary
* argument lengths. So, we parse using a single-character at a time state
* machine that is completely independent of packet size.
*/
int
libwebsocket_read(struct libwebsocket_context *context,
struct libwebsocket *wsi, unsigned char * buf, size_t len)
{
size_t n;
switch (wsi->state) {
case WSI_STATE_HTTP:
wsi->state = WSI_STATE_HTTP_HEADERS;
wsi->parser_state = WSI_TOKEN_NAME_PART;
/* fallthru */
case WSI_STATE_HTTP_HEADERS:
debug("issuing %d bytes to parser\n", (int)len);
#ifdef DEBUG
fwrite(buf, 1, len, stderr);
#endif
switch (wsi->mode) {
case LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY:
case LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE:
case LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY:
case LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT:
case LWS_CONNMODE_WS_CLIENT:
for (n = 0; n < len; n++)
libwebsocket_client_rx_sm(wsi, *buf++);
return 0;
default:
break;
}
/* LWS_CONNMODE_WS_SERVING */
for (n = 0; n < len; n++)
libwebsocket_parse(wsi, *buf++);
if (wsi->parser_state != WSI_PARSING_COMPLETE)
break;
debug("seem to be serving, mode is %d\n", wsi->mode);
debug("libwebsocket_parse sees parsing complete\n");
/* is this websocket protocol or normal http 1.0? */
if (!wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len ||
!wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len) {
wsi->state = WSI_STATE_HTTP;
if (wsi->protocol->callback)
(wsi->protocol->callback)(context, wsi,
LWS_CALLBACK_HTTP, wsi->user_space,
wsi->utf8_token[WSI_TOKEN_GET_URI].token, 0);
return 0;
}
if (!wsi->protocol)
fprintf(stderr, "NULL protocol at libwebsocket_read\n");
/*
* It's websocket
*
* Make sure user side is happy about protocol
*/
while (wsi->protocol->callback) {
if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token == NULL) {
if (wsi->protocol->name == NULL)
break;
} else
if (wsi->protocol->name && strcmp(
wsi->utf8_token[WSI_TOKEN_PROTOCOL].token,
wsi->protocol->name) == 0)
break;
wsi->protocol++;
}
/* we didn't find a protocol he wanted? */
if (wsi->protocol->callback == NULL) {
if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token == NULL)
fprintf(stderr, "[no protocol] "
"not supported (use NULL .name)\n");
else
fprintf(stderr, "Requested protocol %s "
"not supported\n",
wsi->utf8_token[WSI_TOKEN_PROTOCOL].token);
goto bail;
}
/*
* find out which spec version the client is using
* if this header is not given, we default to 00 (aka 76)
*/
if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len)
wsi->ietf_spec_revision =
atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token);
/*
* Give the user code a chance to study the request and
* have the opportunity to deny it
*/
if ((wsi->protocol->callback)(wsi->protocol->owning_server, wsi,
LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION,
&wsi->utf8_token[0], NULL, 0)) {
fprintf(stderr, "User code denied connection\n");
goto bail;
}
/*
* Perform the handshake according to the protocol version the
* client announced
*/
switch (wsi->ietf_spec_revision) {
case 0: /* applies to 76 and 00 */
wsi->xor_mask = xor_no_mask;
if (handshake_00(context, wsi))
goto bail;
break;
case 4: /* 04 */
wsi->xor_mask = xor_mask_04;
debug("libwebsocket_parse calling handshake_04\n");
if (handshake_0405(context, wsi))
goto bail;
break;
case 5:
case 6:
case 7:
case 8:
case 13:
wsi->xor_mask = xor_mask_05;
debug("libwebsocket_parse calling handshake_04\n");
if (handshake_0405(context, wsi))
goto bail;
break;
default:
fprintf(stderr, "Unknown client spec version %d\n",
wsi->ietf_spec_revision);
goto bail;
}
debug("accepted v%02d connection\n",
wsi->ietf_spec_revision);
break;
case WSI_STATE_AWAITING_CLOSE_ACK:
case WSI_STATE_ESTABLISHED:
switch (wsi->mode) {
case LWS_CONNMODE_WS_CLIENT:
for (n = 0; n < len; n++)
if (libwebsocket_client_rx_sm(wsi, *buf++) < 0)
goto bail;
return 0;
default:
break;
}
/* LWS_CONNMODE_WS_SERVING */
if (libwebsocket_interpret_incoming_packet(wsi, buf, len) < 0)
goto bail;
break;
default:
break;
}
return 0;
bail:
libwebsocket_close_and_free_session(context, wsi,
LWS_CLOSE_STATUS_NOSTATUS);
return -1;
}

3183
libs/libwebsockets/lib/libwebsockets.c Normal file
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731
libs/libwebsockets/lib/libwebsockets.h Normal file
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@ -0,0 +1,731 @@
/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#ifndef __LIBWEBSOCKET_H__
#define __LIBWEBSOCKET_H__
#ifdef __cplusplus
extern "C" {
#include <cstddef>
#endif
#ifdef WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stddef.h>
#include "../win32port/win32helpers/websock-w32.h"
#include "../win32port/win32helpers/gettimeofday.h"
#define strcasecmp stricmp
typedef int ssize_t;
#ifdef LWS_DLL
#ifdef LWS_INTERNAL
#define LWS_EXTERN extern __declspec(dllexport)
#else
#define LWS_EXTERN extern __declspec(dllimport)
#endif
#endif
#else
#include <poll.h>
#endif
#ifndef LWS_EXTERN
#define LWS_EXTERN extern
#endif
#define CONTEXT_PORT_NO_LISTEN 0
#define MAX_MUX_RECURSION 2
enum libwebsocket_context_options {
LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK = 1,
LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT = 2,
};
enum libwebsocket_callback_reasons {
LWS_CALLBACK_ESTABLISHED,
LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
LWS_CALLBACK_CLIENT_ESTABLISHED,
LWS_CALLBACK_CLOSED,
LWS_CALLBACK_RECEIVE,
LWS_CALLBACK_CLIENT_RECEIVE,
LWS_CALLBACK_CLIENT_RECEIVE_PONG,
LWS_CALLBACK_CLIENT_WRITEABLE,
LWS_CALLBACK_SERVER_WRITEABLE,
LWS_CALLBACK_HTTP,
LWS_CALLBACK_BROADCAST,
LWS_CALLBACK_FILTER_NETWORK_CONNECTION,
LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION,
LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
LWS_CALLBACK_CONFIRM_EXTENSION_OKAY,
LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
/* external poll() management support */
LWS_CALLBACK_ADD_POLL_FD,
LWS_CALLBACK_DEL_POLL_FD,
LWS_CALLBACK_SET_MODE_POLL_FD,
LWS_CALLBACK_CLEAR_MODE_POLL_FD,
};
enum libwebsocket_extension_callback_reasons {
LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT,
LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT,
LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT,
LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT,
LWS_EXT_CALLBACK_CONSTRUCT,
LWS_EXT_CALLBACK_CLIENT_CONSTRUCT,
LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE,
LWS_EXT_CALLBACK_CHECK_OK_TO_PROPOSE_EXTENSION,
LWS_EXT_CALLBACK_DESTROY,
LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING,
LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED,
LWS_EXT_CALLBACK_PACKET_RX_PREPARSE,
LWS_EXT_CALLBACK_PACKET_TX_PRESEND,
LWS_EXT_CALLBACK_PACKET_TX_DO_SEND,
LWS_EXT_CALLBACK_HANDSHAKE_REPLY_TX,
LWS_EXT_CALLBACK_FLUSH_PENDING_TX,
LWS_EXT_CALLBACK_EXTENDED_PAYLOAD_RX,
LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION,
LWS_EXT_CALLBACK_1HZ,
LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE,
LWS_EXT_CALLBACK_IS_WRITEABLE,
};
enum libwebsocket_write_protocol {
LWS_WRITE_TEXT,
LWS_WRITE_BINARY,
LWS_WRITE_CONTINUATION,
LWS_WRITE_HTTP,
/* special 04+ opcodes */
LWS_WRITE_CLOSE,
LWS_WRITE_PING,
LWS_WRITE_PONG,
/* flags */
LWS_WRITE_NO_FIN = 0x40,
/*
* client packet payload goes out on wire unmunged
* only useful for security tests since normal servers cannot
* decode the content if used
*/
LWS_WRITE_CLIENT_IGNORE_XOR_MASK = 0x80
};
/*
* you need these to look at headers that have been parsed if using the
* LWS_CALLBACK_FILTER_CONNECTION callback. If a header from the enum
* list below is absent, .token = NULL and token_len = 0. Otherwise .token
* points to .token_len chars containing that header content.
*/
struct lws_tokens {
char *token;
int token_len;
};
enum lws_token_indexes {
WSI_TOKEN_GET_URI,
WSI_TOKEN_HOST,
WSI_TOKEN_CONNECTION,
WSI_TOKEN_KEY1,
WSI_TOKEN_KEY2,
WSI_TOKEN_PROTOCOL,
WSI_TOKEN_UPGRADE,
WSI_TOKEN_ORIGIN,
WSI_TOKEN_DRAFT,
WSI_TOKEN_CHALLENGE,
/* new for 04 */
WSI_TOKEN_KEY,
WSI_TOKEN_VERSION,
WSI_TOKEN_SWORIGIN,
/* new for 05 */
WSI_TOKEN_EXTENSIONS,
/* client receives these */
WSI_TOKEN_ACCEPT,
WSI_TOKEN_NONCE,
WSI_TOKEN_HTTP,
WSI_TOKEN_MUXURL,
/* always last real token index*/
WSI_TOKEN_COUNT,
/* parser state additions */
WSI_TOKEN_NAME_PART,
WSI_TOKEN_SKIPPING,
WSI_TOKEN_SKIPPING_SAW_CR,
WSI_PARSING_COMPLETE,
WSI_INIT_TOKEN_MUXURL,
};
/*
* From 06 spec
1000
1000 indicates a normal closure, meaning whatever purpose the
connection was established for has been fulfilled.
1001
1001 indicates that an endpoint is "going away", such as a server
going down, or a browser having navigated away from a page.
1002
1002 indicates that an endpoint is terminating the connection due
to a protocol error.
1003
1003 indicates that an endpoint is terminating the connection
because it has received a type of data it cannot accept (e.g. an
endpoint that understands only text data may send this if it
receives a binary message.)
1004
1004 indicates that an endpoint is terminating the connection
because it has received a message that is too large.
*/
enum lws_close_status {
LWS_CLOSE_STATUS_NOSTATUS = 0,
LWS_CLOSE_STATUS_NORMAL = 1000,
LWS_CLOSE_STATUS_GOINGAWAY = 1001,
LWS_CLOSE_STATUS_PROTOCOL_ERR = 1002,
LWS_CLOSE_STATUS_UNACCEPTABLE_OPCODE = 1003,
LWS_CLOSE_STATUS_PAYLOAD_TOO_LARGE = 1004,
};
struct libwebsocket;
struct libwebsocket_context;
struct libwebsocket_extension;
/**
* callback_function() - User server actions
* @context: Websockets context
* @wsi: Opaque websocket instance pointer
* @reason: The reason for the call
* @user: Pointer to per-session user data allocated by library
* @in: Pointer used for some callback reasons
* @len: Length set for some callback reasons
*
* This callback is the way the user controls what is served. All the
* protocol detail is hidden and handled by the library.
*
* For each connection / session there is user data allocated that is
* pointed to by "user". You set the size of this user data area when
* the library is initialized with libwebsocket_create_server.
*
* You get an opportunity to initialize user data when called back with
* LWS_CALLBACK_ESTABLISHED reason.
*
* LWS_CALLBACK_ESTABLISHED: after the server completes a handshake with
* an incoming client
*
* LWS_CALLBACK_CLIENT_CONNECTION_ERROR: the request client connection has
* been unable to complete a handshake with the remote server
*
* LWS_CALLBACK_CLIENT_ESTABLISHED: after your client connection completed
* a handshake with the remote server
*
* LWS_CALLBACK_CLOSED: when the websocket session ends
*
* LWS_CALLBACK_BROADCAST: signal to send to client (you would use
* libwebsocket_write() taking care about the
* special buffer requirements
*
* LWS_CALLBACK_RECEIVE: data has appeared for this server endpoint from a
* remote client, it can be found at *in and is
* len bytes long
*
* LWS_CALLBACK_CLIENT_RECEIVE_PONG: if you elected to see PONG packets,
* they appear with this callback reason. PONG
* packets only exist in 04+ protocol
*
* LWS_CALLBACK_CLIENT_RECEIVE: data has appeared from the server for the
* client connection, it can be found at *in and
* is len bytes long
*
* LWS_CALLBACK_HTTP: an http request has come from a client that is not
* asking to upgrade the connection to a websocket
* one. This is a chance to serve http content,
* for example, to send a script to the client
* which will then open the websockets connection.
* @in points to the URI path requested and
* libwebsockets_serve_http_file() makes it very
* simple to send back a file to the client.
*
* LWS_CALLBACK_CLIENT_WRITEABLE:
* LWS_CALLBACK_SERVER_WRITEABLE: If you call
* libwebsocket_callback_on_writable() on a connection, you will
* get one of these callbacks coming when the connection socket
* is able to accept another write packet without blocking.
* If it already was able to take another packet without blocking,
* you'll get this callback at the next call to the service loop
* function. Notice that CLIENTs get LWS_CALLBACK_CLIENT_WRITEABLE
* and servers get LWS_CALLBACK_SERVER_WRITEABLE.
*
* LWS_CALLBACK_FILTER_NETWORK_CONNECTION: called when a client connects to
* the server at network level; the connection is accepted but then
* passed to this callback to decide whether to hang up immediately
* or not, based on the client IP. @user contains the connection
* socket's descriptor. Return non-zero to terminate
* the connection before sending or receiving anything.
* Because this happens immediately after the network connection
* from the client, there's no websocket protocol selected yet so
* this callback is issued only to protocol 0.
*
* LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION: called when the handshake has
* been received and parsed from the client, but the response is
* not sent yet. Return non-zero to disallow the connection.
* @user is a pointer to an array of struct lws_tokens, you can
* use the header enums lws_token_indexes from libwebsockets.h
* to check for and read the supported header presence and
* content before deciding to allow the handshake to proceed or
* to kill the connection.
*
* LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS: if configured for
* including OpenSSL support, this callback allows your user code
* to perform extra SSL_CTX_load_verify_locations() or similar
* calls to direct OpenSSL where to find certificates the client
* can use to confirm the remote server identity. @user is the
* OpenSSL SSL_CTX*
*
* LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS: if configured for
* including OpenSSL support, this callback allows your user code
* to load extra certifcates into the server which allow it to
* verify the validity of certificates returned by clients. @user
* is the server's OpenSSL SSL_CTX*
*
* LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION: if the
* libwebsockets context was created with the option
* LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT, then this
* callback is generated during OpenSSL verification of the cert
* sent from the client. It is sent to protocol[0] callback as
* no protocol has been negotiated on the connection yet.
* Notice that the libwebsockets context and wsi are both NULL
* during this callback. See
* http://www.openssl.org/docs/ssl/SSL_CTX_set_verify.html
* to understand more detail about the OpenSSL callback that
* generates this libwebsockets callback and the meanings of the
* arguments passed. In this callback, @user is the x509_ctx,
* @in is the ssl pointer and @len is preverify_ok
* Notice that this callback maintains libwebsocket return
* conventions, return 0 to mean the cert is OK or 1 to fail it.
* This also means that if you don't handle this callback then
* the default callback action of returning 0 allows the client
* certificates.
*
* LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER: this callback happens
* when a client handshake is being compiled. @user is NULL,
* @in is a char **, it's pointing to a char * which holds the
* next location in the header buffer where you can add
* headers, and @len is the remaining space in the header buffer,
* which is typically some hundreds of bytes. So, to add a canned
* cookie, your handler code might look similar to:
*
* char **p = (char **)in;
*
* if (len < 100)
* return 1;
*
* *p += sprintf(*p, "Cookie: a=b\x0d\x0a");
*
* return 0;
*
* Notice if you add anything, you just have to take care about
* the CRLF on the line you added. Obviously this callback is
* optional, if you don't handle it everything is fine.
*
* Notice the callback is coming to protocols[0] all the time,
* because there is no specific protocol handshook yet.
*
* LWS_CALLBACK_CONFIRM_EXTENSION_OKAY: When the server handshake code
* sees that it does support a requested extension, before
* accepting the extension by additing to the list sent back to
* the client it gives this callback just to check that it's okay
* to use that extension. It calls back to the requested protocol
* and with @in being the extension name, @len is 0 and @user is
* valid. Note though at this time the ESTABLISHED callback hasn't
* happened yet so if you initialize @user content there, @user
* content during this callback might not be useful for anything.
* Notice this callback comes to protocols[0].
*
* LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED: When a client
* connection is being prepared to start a handshake to a server,
* each supported extension is checked with protocols[0] callback
* with this reason, giving the user code a chance to suppress the
* claim to support that extension by returning non-zero. If
* unhandled, by default 0 will be returned and the extension
* support included in the header to the server. Notice this
* callback comes to protocols[0].
*
* The next four reasons are optional and only need taking care of if you
* will be integrating libwebsockets sockets into an external polling
* array.
*
* LWS_CALLBACK_ADD_POLL_FD: libwebsocket deals with its poll() loop
* internally, but in the case you are integrating with another
* server you will need to have libwebsocket sockets share a
* polling array with the other server. This and the other
* POLL_FD related callbacks let you put your specialized
* poll array interface code in the callback for protocol 0, the
* first protocol you support, usually the HTTP protocol in the
* serving case. This callback happens when a socket needs to be
* added to the polling loop: @user contains the fd, and
* @len is the events bitmap (like, POLLIN). If you are using the
* internal polling loop (the "service" callback), you can just
* ignore these callbacks.
*
* LWS_CALLBACK_DEL_POLL_FD: This callback happens when a socket descriptor
* needs to be removed from an external polling array. @user is
* the socket desricptor. If you are using the internal polling
* loop, you can just ignore it.
*
* LWS_CALLBACK_SET_MODE_POLL_FD: This callback happens when libwebsockets
* wants to modify the events for the socket descriptor in @user.
* The handler should OR @len on to the events member of the pollfd
* struct for this socket descriptor. If you are using the
* internal polling loop, you can just ignore it.
*
* LWS_CALLBACK_CLEAR_MODE_POLL_FD: This callback occurs when libwebsockets
* wants to modify the events for the socket descriptor in @user.
* The handler should AND ~@len on to the events member of the
* pollfd struct for this socket descriptor. If you are using the
* internal polling loop, you can just ignore it.
*/
LWS_EXTERN int callback(struct libwebsocket_context * context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason, void *user,
void *in, size_t len);
typedef int (callback_function)(struct libwebsocket_context * context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason, void *user,
void *in, size_t len);
/**
* extension_callback_function() - Hooks to allow extensions to operate
* @context: Websockets context
* @ext: This extension
* @wsi: Opaque websocket instance pointer
* @reason: The reason for the call
* @user: Pointer to per-session user data allocated by library
* @in: Pointer used for some callback reasons
* @len: Length set for some callback reasons
*
* Each extension that is active on a particular connection receives
* callbacks during the connection lifetime to allow the extension to
* operate on websocket data and manage itself.
*
* Libwebsockets takes care of allocating and freeing "user" memory for
* each active extension on each connection. That is what is pointed to
* by the @user parameter.
*
* LWS_EXT_CALLBACK_CONSTRUCT: called when the server has decided to
* select this extension from the list provided by the client,
* just before the server will send back the handshake accepting
* the connection with this extension active. This gives the
* extension a chance to initialize its connection context found
* in @user.
*
* LWS_EXT_CALLBACK_CLIENT_CONSTRUCT: same as LWS_EXT_CALLBACK_CONSTRUCT
* but called when client is instantiating this extension. Some
* extensions will work the same on client and server side and then
* you can just merge handlers for both CONSTRUCTS.
*
* LWS_EXT_CALLBACK_DESTROY: called when the connection the extension was
* being used on is about to be closed and deallocated. It's the
* last chance for the extension to deallocate anything it has
* allocated in the user data (pointed to by @user) before the
* user data is deleted. This same callback is used whether you
* are in client or server instantiation context.
*
* LWS_EXT_CALLBACK_PACKET_RX_PREPARSE: when this extension was active on
* a connection, and a packet of data arrived at the connection,
* it is passed to this callback to give the extension a chance to
* change the data, eg, decompress it. @user is pointing to the
* extension's private connection context data, @in is pointing
* to an lws_tokens struct, it consists of a char * pointer called
* token, and an int called token_len. At entry, these are
* set to point to the received buffer and set to the content
* length. If the extension will grow the content, it should use
* a new buffer allocated in its private user context data and
* set the pointed-to lws_tokens members to point to its buffer.
*
* LWS_EXT_CALLBACK_PACKET_TX_PRESEND: this works the same way as
* LWS_EXT_CALLBACK_PACKET_RX_PREPARSE above, except it gives the
* extension a chance to change websocket data just before it will
* be sent out. Using the same lws_token pointer scheme in @in,
* the extension can change the buffer and the length to be
* transmitted how it likes. Again if it wants to grow the
* buffer safely, it should copy the data into its own buffer and
* set the lws_tokens token pointer to it.
*/
LWS_EXTERN int extension_callback(struct libwebsocket_context * context,
struct libwebsocket_extension *ext,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons reason, void *user,
void *in, size_t len);
typedef int (extension_callback_function)(struct libwebsocket_context * context,
struct libwebsocket_extension *ext,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons reason, void *user,
void *in, size_t len);
/**
* struct libwebsocket_protocols - List of protocols and handlers server
* supports.
* @name: Protocol name that must match the one given in the client
* Javascript new WebSocket(url, 'protocol') name
* @callback: The service callback used for this protocol. It allows the
* service action for an entire protocol to be encapsulated in
* the protocol-specific callback
* @per_session_data_size: Each new connection using this protocol gets
* this much memory allocated on connection establishment and
* freed on connection takedown. A pointer to this per-connection
* allocation is passed into the callback in the 'user' parameter
* @owning_server: the server init call fills in this opaque pointer when
* registering this protocol with the server.
* @broadcast_socket_port: the server init call fills this in with the
* localhost port number used to forward broadcasts for this
* protocol
* @broadcast_socket_user_fd: the server init call fills this in ... the main()
* process context can write to this socket to perform broadcasts
* (use the libwebsockets_broadcast() api to do this instead,
* it works from any process context)
* @protocol_index: which protocol we are starting from zero
*
* This structure represents one protocol supported by the server. An
* array of these structures is passed to libwebsocket_create_server()
* allows as many protocols as you like to be handled by one server.
*/
struct libwebsocket_protocols {
const char *name;
callback_function *callback;
size_t per_session_data_size;
/*
* below are filled in on server init and can be left uninitialized,
* no need for user to use them directly either
*/
struct libwebsocket_context *owning_server;
int broadcast_socket_port;
int broadcast_socket_user_fd;
int protocol_index;
};
/**
* struct libwebsocket_extension - An extension we know how to cope with
*
* @name: Formal extension name, eg, "deflate-stream"
* @callback: Service callback
* @per_session_data_size: Libwebsockets will auto-malloc this much
* memory for the use of the extension, a pointer
* to it comes in the @user callback parameter
* @per_context_private_data: Optional storage for this externsion that
* is per-context, so it can track stuff across
* all sessions, etc, if it wants
*/
struct libwebsocket_extension {
const char *name;
extension_callback_function *callback;
size_t per_session_data_size;
void * per_context_private_data;
};
LWS_EXTERN struct libwebsocket_context *
libwebsocket_create_context(int port, const char * interf,
struct libwebsocket_protocols *protocols,
struct libwebsocket_extension *extensions,
const char *ssl_cert_filepath,
const char *ssl_private_key_filepath, int gid, int uid,
unsigned int options);
LWS_EXTERN void
libwebsocket_context_destroy(struct libwebsocket_context *context);
LWS_EXTERN int
libwebsockets_fork_service_loop(struct libwebsocket_context *context);
LWS_EXTERN int
libwebsocket_service(struct libwebsocket_context *context, int timeout_ms);
LWS_EXTERN int
libwebsocket_service_fd(struct libwebsocket_context *context,
struct pollfd *pollfd);
/*
* IMPORTANT NOTICE!
*
* When sending with websocket protocol (LWS_WRITE_TEXT or LWS_WRITE_BINARY)
* the send buffer has to have LWS_SEND_BUFFER_PRE_PADDING bytes valid BEFORE
* buf, and LWS_SEND_BUFFER_POST_PADDING bytes valid AFTER (buf + len).
*
* This allows us to add protocol info before and after the data, and send as
* one packet on the network without payload copying, for maximum efficiency.
*
* So for example you need this kind of code to use libwebsocket_write with a
* 128-byte payload
*
* char buf[LWS_SEND_BUFFER_PRE_PADDING + 128 + LWS_SEND_BUFFER_POST_PADDING];
*
* // fill your part of the buffer... for example here it's all zeros
* memset(&buf[LWS_SEND_BUFFER_PRE_PADDING], 0, 128);
*
* libwebsocket_write(wsi, &buf[LWS_SEND_BUFFER_PRE_PADDING], 128);
*
* When sending LWS_WRITE_HTTP, there is no protocol addition and you can just
* use the whole buffer without taking care of the above.
*/
/*
* this is the frame nonce plus two header plus 8 length
* there's an additional two for mux extension per mux nesting level
* 2 byte prepend on close will already fit because control frames cannot use
* the big length style
*/
#define LWS_SEND_BUFFER_PRE_PADDING (4 + 10 + (2 * MAX_MUX_RECURSION))
#define LWS_SEND_BUFFER_POST_PADDING 1
LWS_EXTERN int
libwebsocket_write(struct libwebsocket *wsi, unsigned char *buf, size_t len,
enum libwebsocket_write_protocol protocol);
LWS_EXTERN int
libwebsockets_serve_http_file(struct libwebsocket *wsi, const char *file,
const char *content_type);
/* notice - you need the pre- and post- padding allocation for buf below */
LWS_EXTERN int
libwebsockets_broadcast(const struct libwebsocket_protocols *protocol,
unsigned char *buf, size_t len);
LWS_EXTERN const struct libwebsocket_protocols *
libwebsockets_get_protocol(struct libwebsocket *wsi);
LWS_EXTERN int
libwebsocket_callback_on_writable(struct libwebsocket_context *context,
struct libwebsocket *wsi);
LWS_EXTERN int
libwebsocket_callback_on_writable_all_protocol(
const struct libwebsocket_protocols *protocol);
LWS_EXTERN int
libwebsocket_get_socket_fd(struct libwebsocket *wsi);
LWS_EXTERN int
libwebsocket_is_final_fragment(struct libwebsocket *wsi);
LWS_EXTERN void *
libwebsocket_ensure_user_space(struct libwebsocket *wsi);
LWS_EXTERN int
libwebsocket_rx_flow_control(struct libwebsocket *wsi, int enable);
LWS_EXTERN size_t
libwebsockets_remaining_packet_payload(struct libwebsocket *wsi);
LWS_EXTERN struct libwebsocket *
libwebsocket_client_connect(struct libwebsocket_context *clients,
const char *address,
int port,
int ssl_connection,
const char *path,
const char *host,
const char *origin,
const char *protocol,
int ietf_version_or_minus_one);
LWS_EXTERN struct libwebsocket *
libwebsocket_client_connect_extended(struct libwebsocket_context *clients,
const char *address,
int port,
int ssl_connection,
const char *path,
const char *host,
const char *origin,
const char *protocol,
int ietf_version_or_minus_one,
void *userdata);
LWS_EXTERN const char *
libwebsocket_canonical_hostname(struct libwebsocket_context *context);
LWS_EXTERN void
libwebsockets_get_peer_addresses(int fd, char *name, int name_len,
char *rip, int rip_len);
LWS_EXTERN void
libwebsockets_hangup_on_client(struct libwebsocket_context *context, int fd);
LWS_EXTERN void
libwebsocket_close_and_free_session(struct libwebsocket_context *context,
struct libwebsocket *wsi, enum lws_close_status);
LWS_EXTERN int
libwebsockets_get_random(struct libwebsocket_context *context,
void *buf, int len);
LWS_EXTERN int
lws_send_pipe_choked(struct libwebsocket *wsi);
LWS_EXTERN unsigned char *
libwebsockets_SHA1(const unsigned char *d, size_t n, unsigned char *md);
LWS_EXTERN int
lws_b64_encode_string(const char *in, int in_len, char *out, int out_size);
LWS_EXTERN int
lws_b64_decode_string(const char *in, char *out, int out_size);
LWS_EXTERN struct libwebsocket_extension libwebsocket_internal_extensions[];
#ifdef __cplusplus
}
#endif
#endif

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/*
* Modified from Polarssl here
* http://polarssl.org/show_source?file=md5
* under GPL2 or later
*/
#include <string.h>
#include <stdio.h>
#define GET_ULONG_LE(n, b, i) \
{ \
(n) = ((unsigned long)(b)[i]) \
| ((unsigned long)(b)[(i) + 1] << 8) \
| ((unsigned long)(b)[(i) + 2] << 16) \
| ((unsigned long)(b)[(i) + 3] << 24); \
}
#define PUT_ULONG_LE(n, b, i) \
{ \
(b)[i] = (unsigned char)(n); \
(b)[(i) + 1] = (unsigned char)((n) >> 8); \
(b)[(i) + 2] = (unsigned char)((n) >> 16); \
(b)[(i) + 3] = (unsigned char)((n) >> 24); \
}
static const unsigned char md5_padding[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
static const unsigned long state_init[] = {
0, 0, 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476
};
static void
md5_process(unsigned long *state, const unsigned char *data)
{
unsigned long X[16], A, B, C, D;
int v;
for (v = 0; v < 16; v++)
GET_ULONG_LE(X[v], data, v << 2);
#define S(x, n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define P(a, b, c, d, k, s, t) { a += F(b, c, d) + X[k] + t; a = S(a, s) + b; }
A = state[0];
B = state[1];
C = state[2];
D = state[3];
#define F(x, y, z) (z ^ (x & (y ^ z)))
P(A, B, C, D, 0, 7, 0xD76AA478);
P(D, A, B, C, 1, 12, 0xE8C7B756);
P(C, D, A, B, 2, 17, 0x242070DB);
P(B, C, D, A, 3, 22, 0xC1BDCEEE);
P(A, B, C, D, 4, 7, 0xF57C0FAF);
P(D, A, B, C, 5, 12, 0x4787C62A);
P(C, D, A, B, 6, 17, 0xA8304613);
P(B, C, D, A, 7, 22, 0xFD469501);
P(A, B, C, D, 8, 7, 0x698098D8);
P(D, A, B, C, 9, 12, 0x8B44F7AF);
P(C, D, A, B, 10, 17, 0xFFFF5BB1);
P(B, C, D, A, 11, 22, 0x895CD7BE);
P(A, B, C, D, 12, 7, 0x6B901122);
P(D, A, B, C, 13, 12, 0xFD987193);
P(C, D, A, B, 14, 17, 0xA679438E);
P(B, C, D, A, 15, 22, 0x49B40821);
#undef F
#define F(x, y, z) (y ^ (z & (x ^ y)))
P(A, B, C, D, 1, 5, 0xF61E2562);
P(D, A, B, C, 6, 9, 0xC040B340);
P(C, D, A, B, 11, 14, 0x265E5A51);
P(B, C, D, A, 0, 20, 0xE9B6C7AA);
P(A, B, C, D, 5, 5, 0xD62F105D);
P(D, A, B, C, 10, 9, 0x02441453);
P(C, D, A, B, 15, 14, 0xD8A1E681);
P(B, C, D, A, 4, 20, 0xE7D3FBC8);
P(A, B, C, D, 9, 5, 0x21E1CDE6);
P(D, A, B, C, 14, 9, 0xC33707D6);
P(C, D, A, B, 3, 14, 0xF4D50D87);
P(B, C, D, A, 8, 20, 0x455A14ED);
P(A, B, C, D, 13, 5, 0xA9E3E905);
P(D, A, B, C, 2, 9, 0xFCEFA3F8);
P(C, D, A, B, 7, 14, 0x676F02D9);
P(B, C, D, A, 12, 20, 0x8D2A4C8A);
#undef F
#define F(x, y, z) (x ^ y ^ z)
P(A, B, C, D, 5, 4, 0xFFFA3942);
P(D, A, B, C, 8, 11, 0x8771F681);
P(C, D, A, B, 11, 16, 0x6D9D6122);
P(B, C, D, A, 14, 23, 0xFDE5380C);
P(A, B, C, D, 1, 4, 0xA4BEEA44);
P(D, A, B, C, 4, 11, 0x4BDECFA9);
P(C, D, A, B, 7, 16, 0xF6BB4B60);
P(B, C, D, A, 10, 23, 0xBEBFBC70);
P(A, B, C, D, 13, 4, 0x289B7EC6);
P(D, A, B, C, 0, 11, 0xEAA127FA);
P(C, D, A, B, 3, 16, 0xD4EF3085);
P(B, C, D, A, 6, 23, 0x04881D05);
P(A, B, C, D, 9, 4, 0xD9D4D039);
P(D, A, B, C, 12, 11, 0xE6DB99E5);
P(C, D, A, B, 15, 16, 0x1FA27CF8);
P(B, C, D, A, 2, 23, 0xC4AC5665);
#undef F
#define F(x, y, z) (y ^ (x | ~z))
P(A, B, C, D, 0, 6, 0xF4292244);
P(D, A, B, C, 7, 10, 0x432AFF97);
P(C, D, A, B, 14, 15, 0xAB9423A7);
P(B, C, D, A, 5, 21, 0xFC93A039);
P(A, B, C, D, 12, 6, 0x655B59C3);
P(D, A, B, C, 3, 10, 0x8F0CCC92);
P(C, D, A, B, 10, 15, 0xFFEFF47D);
P(B, C, D, A, 1, 21, 0x85845DD1);
P(A, B, C, D, 8, 6, 0x6FA87E4F);
P(D, A, B, C, 15, 10, 0xFE2CE6E0);
P(C, D, A, B, 6, 15, 0xA3014314);
P(B, C, D, A, 13, 21, 0x4E0811A1);
P(A, B, C, D, 4, 6, 0xF7537E82);
P(D, A, B, C, 11, 10, 0xBD3AF235);
P(C, D, A, B, 2, 15, 0x2AD7D2BB);
P(B, C, D, A, 9, 21, 0xEB86D391);
#undef F
state[0] += A;
state[1] += B;
state[2] += C;
state[3] += D;
}
static
void md5_update(unsigned long *state, unsigned char *buffer,
const unsigned char *input, int ilen)
{
int fill;
unsigned long left;
if (ilen <= 0)
return;
left = state[0] & 0x3F;
fill = 64 - left;
state[0] += ilen;
state[0] &= 0xFFFFFFFF;
if (state[0] < (unsigned long)ilen)
state[1]++;
if (left && ilen >= fill) {
memcpy(buffer + left, input, fill);
md5_process(&state[2], buffer);
input += fill;
ilen -= fill;
left = 0;
}
while (ilen >= 64) {
md5_process(&state[2], input);
input += 64;
ilen -= 64;
}
if (ilen > 0)
memcpy(buffer + left, input, ilen);
}
void
MD5(const unsigned char *input, int ilen, unsigned char *output)
{
unsigned long last, padn;
unsigned long high, low;
unsigned char msglen[8];
unsigned long state[6];
unsigned char buffer[64];
memcpy(&state[0], &state_init[0], sizeof(state_init));
md5_update(state, buffer, input, ilen);
high = (state[0] >> 29) | (state[1] << 3);
low = state[0] << 3;
PUT_ULONG_LE(low, msglen, 0);
PUT_ULONG_LE(high, msglen, 4);
last = state[0] & 0x3F;
padn = (last < 56) ? (56 - last) : (120 - last);
md5_update(state, buffer, md5_padding, padn);
md5_update(state, buffer, msglen, 8);
PUT_ULONG_LE(state[2], output, 0);
PUT_ULONG_LE(state[3], output, 4);
PUT_ULONG_LE(state[4], output, 8);
PUT_ULONG_LE(state[5], output, 12);
}

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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#ifdef __MINGW64__
#else
#ifdef __MINGW32__
#else
#include <netdb.h>
#endif
#endif
#include <stdarg.h>
#include <sys/stat.h>
#ifdef WIN32
#ifdef __MINGW64__
#else
#ifdef __MINGW32__
#else
#include <time.h >
#endif
#endif
#include <winsock2.h>
#include <ws2ipdef.h>
#include <windows.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#ifndef LWS_NO_FORK
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#endif
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <poll.h>
#include <sys/mman.h>
#include <sys/time.h>
#endif
#ifdef LWS_OPENSSL_SUPPORT
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#endif
#include "libwebsockets.h"
#if 0
#define DEBUG
#endif
#ifdef DEBUG
#ifdef WIN32
static
#else
static inline
#endif
void debug(const char *format, ...)
{
va_list ap;
va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap);
}
#else
#ifdef WIN32
static
#else
static inline
#endif
void debug(const char *format, ...)
{
}
#endif
/*
* Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
* but happily have something equivalent in the SO_NOSIGPIPE flag.
*/
#ifdef __APPLE__
#define MSG_NOSIGNAL SO_NOSIGPIPE
#endif
#define FD_HASHTABLE_MODULUS 32
#define MAX_CLIENTS 100
#define LWS_MAX_HEADER_NAME_LENGTH 64
#define LWS_MAX_HEADER_LEN 4096
#define LWS_INITIAL_HDR_ALLOC 256
#define LWS_ADDITIONAL_HDR_ALLOC 64
#define MAX_USER_RX_BUFFER 4096
#define MAX_BROADCAST_PAYLOAD 2048
#define LWS_MAX_PROTOCOLS 10
#define LWS_MAX_EXTENSIONS_ACTIVE 10
#define SPEC_LATEST_SUPPORTED 13
#define MAX_WEBSOCKET_04_KEY_LEN 128
#define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
enum lws_websocket_opcodes_04 {
LWS_WS_OPCODE_04__CONTINUATION = 0,
LWS_WS_OPCODE_04__CLOSE = 1,
LWS_WS_OPCODE_04__PING = 2,
LWS_WS_OPCODE_04__PONG = 3,
LWS_WS_OPCODE_04__TEXT_FRAME = 4,
LWS_WS_OPCODE_04__BINARY_FRAME = 5,
LWS_WS_OPCODE_04__RESERVED_6 = 6,
LWS_WS_OPCODE_04__RESERVED_7 = 7,
LWS_WS_OPCODE_04__RESERVED_8 = 8,
LWS_WS_OPCODE_04__RESERVED_9 = 9,
LWS_WS_OPCODE_04__RESERVED_A = 0xa,
LWS_WS_OPCODE_04__RESERVED_B = 0xb,
LWS_WS_OPCODE_04__RESERVED_C = 0xc,
LWS_WS_OPCODE_04__RESERVED_D = 0xd,
LWS_WS_OPCODE_04__RESERVED_E = 0xe,
LWS_WS_OPCODE_04__RESERVED_F = 0xf,
};
enum lws_websocket_opcodes_07 {
LWS_WS_OPCODE_07__CONTINUATION = 0,
LWS_WS_OPCODE_07__TEXT_FRAME = 1,
LWS_WS_OPCODE_07__BINARY_FRAME = 2,
LWS_WS_OPCODE_07__NOSPEC__MUX = 7,
/* control extensions 8+ */
LWS_WS_OPCODE_07__CLOSE = 8,
LWS_WS_OPCODE_07__PING = 9,
LWS_WS_OPCODE_07__PONG = 0xa,
};
enum lws_connection_states {
WSI_STATE_HTTP,
WSI_STATE_HTTP_HEADERS,
WSI_STATE_DEAD_SOCKET,
WSI_STATE_ESTABLISHED,
WSI_STATE_CLIENT_UNCONNECTED,
WSI_STATE_RETURNED_CLOSE_ALREADY,
WSI_STATE_AWAITING_CLOSE_ACK,
};
enum lws_rx_parse_state {
LWS_RXPS_NEW,
LWS_RXPS_SEEN_76_FF,
LWS_RXPS_PULLING_76_LENGTH,
LWS_RXPS_EAT_UNTIL_76_FF,
LWS_RXPS_04_MASK_NONCE_1,
LWS_RXPS_04_MASK_NONCE_2,
LWS_RXPS_04_MASK_NONCE_3,
LWS_RXPS_04_FRAME_HDR_1,
LWS_RXPS_04_FRAME_HDR_LEN,
LWS_RXPS_04_FRAME_HDR_LEN16_2,
LWS_RXPS_04_FRAME_HDR_LEN16_1,
LWS_RXPS_04_FRAME_HDR_LEN64_8,
LWS_RXPS_04_FRAME_HDR_LEN64_7,
LWS_RXPS_04_FRAME_HDR_LEN64_6,
LWS_RXPS_04_FRAME_HDR_LEN64_5,
LWS_RXPS_04_FRAME_HDR_LEN64_4,
LWS_RXPS_04_FRAME_HDR_LEN64_3,
LWS_RXPS_04_FRAME_HDR_LEN64_2,
LWS_RXPS_04_FRAME_HDR_LEN64_1,
LWS_RXPS_07_COLLECT_FRAME_KEY_1,
LWS_RXPS_07_COLLECT_FRAME_KEY_2,
LWS_RXPS_07_COLLECT_FRAME_KEY_3,
LWS_RXPS_07_COLLECT_FRAME_KEY_4,
LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
};
enum connection_mode {
LWS_CONNMODE_WS_SERVING,
LWS_CONNMODE_WS_CLIENT,
/* transient modes */
LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY,
LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE,
LWS_CONNMODE_WS_CLIENT_WAITING_SERVER_REPLY,
LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT,
LWS_CONNMODE_WS_CLIENT_PENDING_CANDIDATE_CHILD,
/* special internal types */
LWS_CONNMODE_SERVER_LISTENER,
LWS_CONNMODE_BROADCAST_PROXY_LISTENER,
LWS_CONNMODE_BROADCAST_PROXY
};
#define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
struct libwebsocket_fd_hashtable {
struct libwebsocket *wsi[MAX_CLIENTS + 1];
int length;
};
struct libwebsocket_protocols;
struct libwebsocket_context {
struct libwebsocket_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
struct pollfd fds[MAX_CLIENTS * FD_HASHTABLE_MODULUS + 1];
int fds_count;
int listen_port;
char http_proxy_address[256];
char canonical_hostname[1024];
unsigned int http_proxy_port;
unsigned int options;
unsigned long last_timeout_check_s;
int fd_random;
#ifdef LWS_OPENSSL_SUPPORT
int use_ssl;
SSL_CTX *ssl_ctx;
SSL_CTX *ssl_client_ctx;
#endif
struct libwebsocket_protocols *protocols;
int count_protocols;
struct libwebsocket_extension *extensions;
};
enum pending_timeout {
NO_PENDING_TIMEOUT = 0,
PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE,
PENDING_TIMEOUT_ESTABLISH_WITH_SERVER,
PENDING_TIMEOUT_AWAITING_SERVER_RESPONSE,
PENDING_TIMEOUT_AWAITING_PING,
PENDING_TIMEOUT_CLOSE_ACK,
PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE,
};
/*
* This is totally opaque to code using the library. It's exported as a
* forward-reference pointer-only declaration; the user can use the pointer with
* other APIs to get information out of it.
*/
struct libwebsocket {
const struct libwebsocket_protocols *protocol;
struct libwebsocket_extension *
active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
void *active_extensions_user[LWS_MAX_EXTENSIONS_ACTIVE];
int count_active_extensions;
enum lws_connection_states state;
char name_buffer[LWS_MAX_HEADER_NAME_LENGTH];
int name_buffer_pos;
int current_alloc_len;
enum lws_token_indexes parser_state;
struct lws_tokens utf8_token[WSI_TOKEN_COUNT];
int ietf_spec_revision;
char rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING + MAX_USER_RX_BUFFER +
LWS_SEND_BUFFER_POST_PADDING];
int rx_user_buffer_head;
enum libwebsocket_write_protocol rx_frame_type;
int protocol_index_for_broadcast_proxy;
enum pending_timeout pending_timeout;
unsigned long pending_timeout_limit;
int sock;
enum lws_rx_parse_state lws_rx_parse_state;
char extension_data_pending;
struct libwebsocket *candidate_children_list;
struct libwebsocket *extension_handles;
/* 04 protocol specific */
char key_b64[150];
unsigned char masking_key_04[20];
unsigned char frame_masking_nonce_04[4];
unsigned char frame_mask_04[20];
unsigned char frame_mask_index;
size_t rx_packet_length;
unsigned char opcode;
unsigned char final;
int pings_vs_pongs;
unsigned char (*xor_mask)(struct libwebsocket *, unsigned char);
char all_zero_nonce;
enum lws_close_status close_reason;
/* 07 specific */
char this_frame_masked;
/* client support */
char initial_handshake_hash_base64[30];
enum connection_mode mode;
char *c_path;
char *c_host;
char *c_origin;
char *c_protocol;
callback_function *c_callback;
char *c_address;
int c_port;
#ifdef LWS_OPENSSL_SUPPORT
SSL *ssl;
BIO *client_bio;
int use_ssl;
#endif
void *user_space;
};
extern int
libwebsocket_client_rx_sm(struct libwebsocket *wsi, unsigned char c);
extern int
libwebsocket_parse(struct libwebsocket *wsi, unsigned char c);
extern int
libwebsocket_interpret_incoming_packet(struct libwebsocket *wsi,
unsigned char *buf, size_t len);
extern int
libwebsocket_read(struct libwebsocket_context *context,
struct libwebsocket *wsi,
unsigned char *buf, size_t len);
extern int
lws_b64_selftest(void);
extern unsigned char
xor_no_mask(struct libwebsocket *wsi, unsigned char c);
extern unsigned char
xor_mask_04(struct libwebsocket *wsi, unsigned char c);
extern unsigned char
xor_mask_05(struct libwebsocket *wsi, unsigned char c);
extern struct libwebsocket *
wsi_from_fd(struct libwebsocket_context *context, int fd);
extern int
insert_wsi(struct libwebsocket_context *context, struct libwebsocket *wsi);
extern int
delete_from_fd(struct libwebsocket_context *context, int fd);
extern void
libwebsocket_set_timeout(struct libwebsocket *wsi,
enum pending_timeout reason, int secs);
extern int
lws_issue_raw(struct libwebsocket *wsi, unsigned char *buf, size_t len);
extern void
libwebsocket_service_timeout_check(struct libwebsocket_context *context,
struct libwebsocket *wsi, unsigned int sec);
extern struct libwebsocket *
__libwebsocket_client_connect_2(struct libwebsocket_context *context,
struct libwebsocket *wsi);
extern struct libwebsocket *
libwebsocket_create_new_server_wsi(struct libwebsocket_context *context);
extern char *
libwebsockets_generate_client_handshake(struct libwebsocket_context *context,
struct libwebsocket *wsi, char *pkt);
extern int
lws_handle_POLLOUT_event(struct libwebsocket_context *context,
struct libwebsocket *wsi, struct pollfd *pollfd);
extern int
lws_any_extension_handled(struct libwebsocket_context *context,
struct libwebsocket *wsi,
enum libwebsocket_extension_callback_reasons r,
void *v, size_t len);
extern void *
lws_get_extension_user_matching_ext(struct libwebsocket *wsi,
struct libwebsocket_extension *ext);
extern int
lws_client_interpret_server_handshake(struct libwebsocket_context *context,
struct libwebsocket *wsi);
extern int
libwebsocket_rx_sm(struct libwebsocket *wsi, unsigned char c);
extern int
lws_issue_raw_ext_access(struct libwebsocket *wsi,
unsigned char *buf, size_t len);
#ifndef LWS_OPENSSL_SUPPORT
unsigned char *
SHA1(const unsigned char *d, size_t n, unsigned char *md);
void
MD5(const unsigned char *input, int ilen, unsigned char *output);
#endif

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/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
* based on: http://csrc.nist.gov/fips/fip180-1.txt
* implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
*/
#include <sys/types.h>
#ifdef WIN32
#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
#endif
#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif
#ifndef BYTE_ORDER
#define BYTE_ORDER LITTLE_ENDIAN
#endif
typedef unsigned __int64 u_int64_t;
#undef __P
#ifndef __P
#if __STDC__
#define __P(protos) protos
#else
#define __P(protos) ()
#endif
#endif
#define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
#else
#include <sys/stat.h>
#include <sys/cdefs.h>
#include <sys/time.h>
#endif
#include <string.h>
struct sha1_ctxt {
union {
unsigned char b8[20];
unsigned int b32[5];
} h;
union {
unsigned char b8[8];
u_int64_t b64[1];
} c;
union {
unsigned char b8[64];
unsigned int b32[16];
} m;
unsigned char count;
};
/* sanity check */
#if BYTE_ORDER != BIG_ENDIAN
# if BYTE_ORDER != LITTLE_ENDIAN
# define unsupported 1
# endif
#endif
#ifndef unsupported
/* constant table */
static unsigned int _K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };
#define K(t) _K[(t) / 20]
#define F0(b, c, d) (((b) & (c)) | ((~(b)) & (d)))
#define F1(b, c, d) (((b) ^ (c)) ^ (d))
#define F2(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
#define F3(b, c, d) (((b) ^ (c)) ^ (d))
#define S(n, x) (((x) << (n)) | ((x) >> (32 - n)))
#define H(n) (ctxt->h.b32[(n)])
#define COUNT (ctxt->count)
#define BCOUNT (ctxt->c.b64[0] / 8)
#define W(n) (ctxt->m.b32[(n)])
#define PUTBYTE(x) { \
ctxt->m.b8[(COUNT % 64)] = (x); \
COUNT++; \
COUNT %= 64; \
ctxt->c.b64[0] += 8; \
if (COUNT % 64 == 0) \
sha1_step(ctxt); \
}
#define PUTPAD(x) { \
ctxt->m.b8[(COUNT % 64)] = (x); \
COUNT++; \
COUNT %= 64; \
if (COUNT % 64 == 0) \
sha1_step(ctxt); \
}
static void sha1_step __P((struct sha1_ctxt *));
static void
sha1_step(struct sha1_ctxt *ctxt)
{
unsigned int a, b, c, d, e, tmp;
size_t t, s;
#if BYTE_ORDER == LITTLE_ENDIAN
struct sha1_ctxt tctxt;
memcpy(&tctxt.m.b8[0], &ctxt->m.b8[0], 64);
ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];
ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];
ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];
ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];
ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];
ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];
ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];
ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];
ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];
ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];
ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];
ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];
ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];
ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];
ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];
ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];
ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];
ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];
ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];
ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];
ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];
ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];
ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];
ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];
ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];
ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];
ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];
ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];
ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];
ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];
ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];
ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];
#endif
a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);
for (t = 0; t < 20; t++) {
s = t & 0x0f;
if (t >= 16)
W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
W((s+2) & 0x0f) ^ W(s));
tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);
e = d; d = c; c = S(30, b); b = a; a = tmp;
}
for (t = 20; t < 40; t++) {
s = t & 0x0f;
W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
W((s+2) & 0x0f) ^ W(s));
tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);
e = d; d = c; c = S(30, b); b = a; a = tmp;
}
for (t = 40; t < 60; t++) {
s = t & 0x0f;
W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
W((s+2) & 0x0f) ^ W(s));
tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);
e = d; d = c; c = S(30, b); b = a; a = tmp;
}
for (t = 60; t < 80; t++) {
s = t & 0x0f;
W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
W((s+2) & 0x0f) ^ W(s));
tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);
e = d; d = c; c = S(30, b); b = a; a = tmp;
}
H(0) = H(0) + a;
H(1) = H(1) + b;
H(2) = H(2) + c;
H(3) = H(3) + d;
H(4) = H(4) + e;
bzero(&ctxt->m.b8[0], 64);
}
/*------------------------------------------------------------*/
void
sha1_init(struct sha1_ctxt *ctxt)
{
bzero(ctxt, sizeof(struct sha1_ctxt));
H(0) = 0x67452301;
H(1) = 0xefcdab89;
H(2) = 0x98badcfe;
H(3) = 0x10325476;
H(4) = 0xc3d2e1f0;
}
void
sha1_pad(struct sha1_ctxt *ctxt)
{
size_t padlen; /*pad length in bytes*/
size_t padstart;
PUTPAD(0x80);
padstart = COUNT % 64;
padlen = 64 - padstart;
if (padlen < 8) {
bzero(&ctxt->m.b8[padstart], padlen);
COUNT += padlen;
COUNT %= 64;
sha1_step(ctxt);
padstart = COUNT % 64; /* should be 0 */
padlen = 64 - padstart; /* should be 64 */
}
bzero(&ctxt->m.b8[padstart], padlen - 8);
COUNT += (padlen - 8);
COUNT %= 64;
#if BYTE_ORDER == BIG_ENDIAN
PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);
PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);
PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);
PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);
#else
PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);
PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);
PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);
PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);
#endif
}
void
sha1_loop(struct sha1_ctxt *ctxt, const unsigned char *input, size_t len)
{
size_t gaplen;
size_t gapstart;
size_t off;
size_t copysiz;
off = 0;
while (off < len) {
gapstart = COUNT % 64;
gaplen = 64 - gapstart;
copysiz = (gaplen < len - off) ? gaplen : len - off;
memcpy(&ctxt->m.b8[gapstart], &input[off], copysiz);
COUNT += copysiz;
COUNT %= 64;
ctxt->c.b64[0] += copysiz * 8;
if (COUNT % 64 == 0)
sha1_step(ctxt);
off += copysiz;
}
}
void
sha1_result(struct sha1_ctxt *ctxt, void *digest0)
{
unsigned char *digest;
digest = (unsigned char *)digest0;
sha1_pad(ctxt);
#if BYTE_ORDER == BIG_ENDIAN
memcpy(digest, &ctxt->h.b8[0], 20);
#else
digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];
digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];
digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];
digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];
digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];
digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];
digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];
digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];
digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];
digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];
#endif
}
/*
* This should look and work like the libcrypto implementation
*/
unsigned char *
SHA1(const unsigned char *d, size_t n, unsigned char *md)
{
struct sha1_ctxt ctx;
sha1_init(&ctx);
sha1_loop(&ctx, d, n);
sha1_result(&ctx, (void *)md);
return md;
}
#endif /*unsupported*/

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<h2>libwebsockets_hangup_on_client - Server calls to terminate client connection</h2>
<i>void</i>
<b>libwebsockets_hangup_on_client</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>int</i> <b>fd</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>libwebsockets context
<dt><b>fd</b>
<dd>Connection socket descriptor
</dl>
<hr>
<h2>libwebsockets_get_peer_addresses - Get client address information</h2>
<i>void</i>
<b>libwebsockets_get_peer_addresses</b>
(<i>int</i> <b>fd</b>,
<i>char *</i> <b>name</b>,
<i>int</i> <b>name_len</b>,
<i>char *</i> <b>rip</b>,
<i>int</i> <b>rip_len</b>)
<h3>Arguments</h3>
<dl>
<dt><b>fd</b>
<dd>Connection socket descriptor
<dt><b>name</b>
<dd>Buffer to take client address name
<dt><b>name_len</b>
<dd>Length of client address name buffer
<dt><b>rip</b>
<dd>Buffer to take client address IP qotted quad
<dt><b>rip_len</b>
<dd>Length of client address IP buffer
</dl>
<h3>Description</h3>
<blockquote>
This function fills in <tt><b>name</b></tt> and <tt><b>rip</b></tt> with the name and IP of
the client connected with socket descriptor <tt><b>fd</b></tt>. Names may be
truncated if there is not enough room. If either cannot be
determined, they will be returned as valid zero-length strings.
</blockquote>
<hr>
<h2>libwebsocket_service_fd - Service polled socket with something waiting</h2>
<i>int</i>
<b>libwebsocket_service_fd</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>struct pollfd *</i> <b>pollfd</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
<dt><b>pollfd</b>
<dd>The pollfd entry describing the socket fd and which events
happened.
</dl>
<h3>Description</h3>
<blockquote>
This function closes any active connections and then frees the
context. After calling this, any further use of the context is
undefined.
</blockquote>
<hr>
<h2>libwebsocket_context_destroy - Destroy the websocket context</h2>
<i>void</i>
<b>libwebsocket_context_destroy</b>
(<i>struct libwebsocket_context *</i> <b>context</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
</dl>
<h3>Description</h3>
<blockquote>
This function closes any active connections and then frees the
context. After calling this, any further use of the context is
undefined.
</blockquote>
<hr>
<h2>libwebsocket_service - Service any pending websocket activity</h2>
<i>int</i>
<b>libwebsocket_service</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>int</i> <b>timeout_ms</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
<dt><b>timeout_ms</b>
<dd>Timeout for poll; 0 means return immediately if nothing needed
service otherwise block and service immediately, returning
after the timeout if nothing needed service.
</dl>
<h3>Description</h3>
<blockquote>
This function deals with any pending websocket traffic, for three
kinds of event. It handles these events on both server and client
types of connection the same.
<p>
1) Accept new connections to our context's server
<p>
2) Perform pending broadcast writes initiated from other forked
processes (effectively serializing asynchronous broadcasts)
<p>
3) Call the receive callback for incoming frame data received by
server or client connections.
<p>
You need to call this service function periodically to all the above
functions to happen; if your application is single-threaded you can
just call it in your main event loop.
<p>
Alternatively you can fork a new process that asynchronously handles
calling this service in a loop. In that case you are happy if this
call blocks your thread until it needs to take care of something and
would call it with a large nonzero timeout. Your loop then takes no
CPU while there is nothing happening.
<p>
If you are calling it in a single-threaded app, you don't want it to
wait around blocking other things in your loop from happening, so you
would call it with a timeout_ms of 0, so it returns immediately if
nothing is pending, or as soon as it services whatever was pending.
</blockquote>
<hr>
<h2>libwebsocket_callback_on_writable - Request a callback when this socket becomes able to be written to without blocking</h2>
<i>int</i>
<b>libwebsocket_callback_on_writable</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>struct libwebsocket *</i> <b>wsi</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>libwebsockets context
<dt><b>wsi</b>
<dd>Websocket connection instance to get callback for
</dl>
<hr>
<h2>libwebsocket_callback_on_writable_all_protocol - Request a callback for all connections using the given protocol when it becomes possible to write to each socket without blocking in turn.</h2>
<i>int</i>
<b>libwebsocket_callback_on_writable_all_protocol</b>
(<i>const struct libwebsocket_protocols *</i> <b>protocol</b>)
<h3>Arguments</h3>
<dl>
<dt><b>protocol</b>
<dd>Protocol whose connections will get callbacks
</dl>
<hr>
<h2>libwebsocket_set_timeout - marks the wsi as subject to a timeout</h2>
<i>void</i>
<b>libwebsocket_set_timeout</b>
(<i>struct libwebsocket *</i> <b>wsi</b>,
<i>enum pending_timeout</i> <b>reason</b>,
<i>int</i> <b>secs</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket connection instance
<dt><b>reason</b>
<dd>timeout reason
<dt><b>secs</b>
<dd>how many seconds
</dl>
<h3>Description</h3>
<blockquote>
<p>
You will not need this unless you are doing something special
</blockquote>
<hr>
<h2>libwebsocket_get_socket_fd - returns the socket file descriptor</h2>
<i>int</i>
<b>libwebsocket_get_socket_fd</b>
(<i>struct libwebsocket *</i> <b>wsi</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket connection instance
</dl>
<h3>Description</h3>
<blockquote>
<p>
You will not need this unless you are doing something special
</blockquote>
<hr>
<h2>libwebsocket_rx_flow_control - Enable and disable socket servicing for receieved packets.</h2>
<i>int</i>
<b>libwebsocket_rx_flow_control</b>
(<i>struct libwebsocket *</i> <b>wsi</b>,
<i>int</i> <b>enable</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket connection instance to get callback for
<dt><b>enable</b>
<dd>0 = disable read servicing for this connection, 1 = enable
</dl>
<h3>Description</h3>
<blockquote>
<p>
If the output side of a server process becomes choked, this allows flow
control for the input side.
</blockquote>
<hr>
<h2>libwebsocket_canonical_hostname - returns this host's hostname</h2>
<i>const char *</i>
<b>libwebsocket_canonical_hostname</b>
(<i>struct libwebsocket_context *</i> <b>context</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
</dl>
<h3>Description</h3>
<blockquote>
<p>
This is typically used by client code to fill in the host parameter
when making a client connection. You can only call it after the context
has been created.
</blockquote>
<hr>
<h2>libwebsocket_create_context - Create the websocket handler</h2>
<i>struct libwebsocket_context *</i>
<b>libwebsocket_create_context</b>
(<i>int</i> <b>port</b>,
<i>const char *</i> <b>interf</b>,
<i>struct libwebsocket_protocols *</i> <b>protocols</b>,
<i>struct libwebsocket_extension *</i> <b>extensions</b>,
<i>const char *</i> <b>ssl_cert_filepath</b>,
<i>const char *</i> <b>ssl_private_key_filepath</b>,
<i>int</i> <b>gid</b>,
<i>int</i> <b>uid</b>,
<i>unsigned int</i> <b>options</b>)
<h3>Arguments</h3>
<dl>
<dt><b>port</b>
<dd>Port to listen on... you can use 0 to suppress listening on
any port, that's what you want if you are not running a
websocket server at all but just using it as a client
<dt><b>interf</b>
<dd>NULL to bind the listen socket to all interfaces, or the
interface name, eg, "eth2"
<dt><b>protocols</b>
<dd>Array of structures listing supported protocols and a protocol-
specific callback for each one. The list is ended with an
entry that has a NULL callback pointer.
It's not const because we write the owning_server member
<dt><b>extensions</b>
<dd>NULL or array of libwebsocket_extension structs listing the
extensions this context supports
<dt><b>ssl_cert_filepath</b>
<dd>If libwebsockets was compiled to use ssl, and you want
to listen using SSL, set to the filepath to fetch the
server cert from, otherwise NULL for unencrypted
<dt><b>ssl_private_key_filepath</b>
<dd>filepath to private key if wanting SSL mode,
else ignored
<dt><b>gid</b>
<dd>group id to change to after setting listen socket, or -1.
<dt><b>uid</b>
<dd>user id to change to after setting listen socket, or -1.
<dt><b>options</b>
<dd>0, or LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK
</dl>
<h3>Description</h3>
<blockquote>
This function creates the listening socket and takes care
of all initialization in one step.
<p>
After initialization, it returns a struct libwebsocket_context * that
represents this server. After calling, user code needs to take care
of calling <b>libwebsocket_service</b> with the context pointer to get the
server's sockets serviced. This can be done in the same process context
or a forked process, or another thread,
<p>
The protocol callback functions are called for a handful of events
including http requests coming in, websocket connections becoming
established, and data arriving; it's also called periodically to allow
async transmission.
<p>
HTTP requests are sent always to the FIRST protocol in <tt><b>protocol</b></tt>, since
at that time websocket protocol has not been negotiated. Other
protocols after the first one never see any HTTP callack activity.
<p>
The server created is a simple http server by default; part of the
websocket standard is upgrading this http connection to a websocket one.
<p>
This allows the same server to provide files like scripts and favicon /
images or whatever over http and dynamic data over websockets all in
one place; they're all handled in the user callback.
</blockquote>
<hr>
<h2>libwebsockets_fork_service_loop - Optional helper function forks off a process for the websocket server loop. You don't have to use this but if not, you have to make sure you are calling libwebsocket_service periodically to service the websocket traffic</h2>
<i>int</i>
<b>libwebsockets_fork_service_loop</b>
(<i>struct libwebsocket_context *</i> <b>context</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>server context returned by creation function
</dl>
<hr>
<h2>libwebsockets_get_protocol - Returns a protocol pointer from a websocket connection.</h2>
<i>const struct libwebsocket_protocols *</i>
<b>libwebsockets_get_protocol</b>
(<i>struct libwebsocket *</i> <b>wsi</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>pointer to struct websocket you want to know the protocol of
</dl>
<h3>Description</h3>
<blockquote>
<p>
This is useful to get the protocol to broadcast back to from inside
the callback.
</blockquote>
<hr>
<h2>libwebsockets_broadcast - Sends a buffer to the callback for all active connections of the given protocol.</h2>
<i>int</i>
<b>libwebsockets_broadcast</b>
(<i>const struct libwebsocket_protocols *</i> <b>protocol</b>,
<i>unsigned char *</i> <b>buf</b>,
<i>size_t</i> <b>len</b>)
<h3>Arguments</h3>
<dl>
<dt><b>protocol</b>
<dd>pointer to the protocol you will broadcast to all members of
<dt><b>buf</b>
<dd>buffer containing the data to be broadcase. NOTE: this has to be
allocated with LWS_SEND_BUFFER_PRE_PADDING valid bytes before
the pointer and LWS_SEND_BUFFER_POST_PADDING afterwards in the
case you are calling this function from callback context.
<dt><b>len</b>
<dd>length of payload data in buf, starting from buf.
</dl>
<h3>Description</h3>
<blockquote>
This function allows bulk sending of a packet to every connection using
the given protocol. It does not send the data directly; instead it calls
the callback with a reason type of LWS_CALLBACK_BROADCAST. If the callback
wants to actually send the data for that connection, the callback itself
should call <b>libwebsocket_write</b>.
<p>
<b>libwebsockets_broadcast</b> can be called from another fork context without
having to take any care about data visibility between the processes, it'll
"just work".
</blockquote>
<hr>
<h2>libwebsocket_write - Apply protocol then write data to client</h2>
<i>int</i>
<b>libwebsocket_write</b>
(<i>struct libwebsocket *</i> <b>wsi</b>,
<i>unsigned char *</i> <b>buf</b>,
<i>size_t</i> <b>len</b>,
<i>enum libwebsocket_write_protocol</i> <b>protocol</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket instance (available from user callback)
<dt><b>buf</b>
<dd>The data to send. For data being sent on a websocket
connection (ie, not default http), this buffer MUST have
LWS_SEND_BUFFER_PRE_PADDING bytes valid BEFORE the pointer
and an additional LWS_SEND_BUFFER_POST_PADDING bytes valid
in the buffer after (buf + len). This is so the protocol
header and trailer data can be added in-situ.
<dt><b>len</b>
<dd>Count of the data bytes in the payload starting from buf
<dt><b>protocol</b>
<dd>Use LWS_WRITE_HTTP to reply to an http connection, and one
of LWS_WRITE_BINARY or LWS_WRITE_TEXT to send appropriate
data on a websockets connection. Remember to allow the extra
bytes before and after buf if LWS_WRITE_BINARY or LWS_WRITE_TEXT
are used.
</dl>
<h3>Description</h3>
<blockquote>
This function provides the way to issue data back to the client
for both http and websocket protocols.
<p>
In the case of sending using websocket protocol, be sure to allocate
valid storage before and after buf as explained above. This scheme
allows maximum efficiency of sending data and protocol in a single
packet while not burdening the user code with any protocol knowledge.
</blockquote>
<hr>
<h2>libwebsockets_serve_http_file - Send a file back to the client using http</h2>
<i>int</i>
<b>libwebsockets_serve_http_file</b>
(<i>struct libwebsocket *</i> <b>wsi</b>,
<i>const char *</i> <b>file</b>,
<i>const char *</i> <b>content_type</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket instance (available from user callback)
<dt><b>file</b>
<dd>The file to issue over http
<dt><b>content_type</b>
<dd>The http content type, eg, text/html
</dl>
<h3>Description</h3>
<blockquote>
This function is intended to be called from the callback in response
to http requests from the client. It allows the callback to issue
local files down the http link in a single step.
</blockquote>
<hr>
<h2>libwebsockets_remaining_packet_payload - Bytes to come before "overall" rx packet is complete</h2>
<i>size_t</i>
<b>libwebsockets_remaining_packet_payload</b>
(<i>struct libwebsocket *</i> <b>wsi</b>)
<h3>Arguments</h3>
<dl>
<dt><b>wsi</b>
<dd>Websocket instance (available from user callback)
</dl>
<h3>Description</h3>
<blockquote>
This function is intended to be called from the callback if the
user code is interested in "complete packets" from the client.
libwebsockets just passes through payload as it comes and issues a buffer
additionally when it hits a built-in limit. The LWS_CALLBACK_RECEIVE
callback handler can use this API to find out if the buffer it has just
been given is the last piece of a "complete packet" from the client --
when that is the case <b>libwebsockets_remaining_packet_payload</b> will return
0.
<p>
Many protocols won't care becuse their packets are always small.
</blockquote>
<hr>
<h2>libwebsocket_client_connect - Connect to another websocket server</h2>
<i>struct libwebsocket *</i>
<b>libwebsocket_client_connect</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>const char *</i> <b>address</b>,
<i>int</i> <b>port</b>,
<i>int</i> <b>ssl_connection</b>,
<i>const char *</i> <b>path</b>,
<i>const char *</i> <b>host</b>,
<i>const char *</i> <b>origin</b>,
<i>const char *</i> <b>protocol</b>,
<i>int</i> <b>ietf_version_or_minus_one</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
<dt><b>address</b>
<dd>Remote server address, eg, "myserver.com"
<dt><b>port</b>
<dd>Port to connect to on the remote server, eg, 80
<dt><b>ssl_connection</b>
<dd>0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
signed certs
<dt><b>path</b>
<dd>Websocket path on server
<dt><b>host</b>
<dd>Hostname on server
<dt><b>origin</b>
<dd>Socket origin name
<dt><b>protocol</b>
<dd>Comma-separated list of protocols being asked for from
the server, or just one. The server will pick the one it
likes best.
<dt><b>ietf_version_or_minus_one</b>
<dd>-1 to ask to connect using the default, latest
protocol supported, or the specific protocol ordinal
</dl>
<h3>Description</h3>
<blockquote>
This function creates a connection to a remote server
</blockquote>
<hr>
<h2>libwebsocket_client_connect_extended - Connect to another websocket server</h2>
<i>struct libwebsocket *</i>
<b>libwebsocket_client_connect_extended</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>const char *</i> <b>address</b>,
<i>int</i> <b>port</b>,
<i>int</i> <b>ssl_connection</b>,
<i>const char *</i> <b>path</b>,
<i>const char *</i> <b>host</b>,
<i>const char *</i> <b>origin</b>,
<i>const char *</i> <b>protocol</b>,
<i>int</i> <b>ietf_version_or_minus_one</b>,
<i>void *</i> <b>userdata</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websocket context
<dt><b>address</b>
<dd>Remote server address, eg, "myserver.com"
<dt><b>port</b>
<dd>Port to connect to on the remote server, eg, 80
<dt><b>ssl_connection</b>
<dd>0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self
signed certs
<dt><b>path</b>
<dd>Websocket path on server
<dt><b>host</b>
<dd>Hostname on server
<dt><b>origin</b>
<dd>Socket origin name
<dt><b>protocol</b>
<dd>Comma-separated list of protocols being asked for from
the server, or just one. The server will pick the one it
likes best.
<dt><b>ietf_version_or_minus_one</b>
<dd>-1 to ask to connect using the default, latest
protocol supported, or the specific protocol ordinal
<dt><b>userdata</b>
<dd>Pre-allocated user data
</dl>
<h3>Description</h3>
<blockquote>
This function creates a connection to a remote server
</blockquote>
<hr>
<h2>callback - User server actions</h2>
<i>LWS_EXTERN int</i>
<b>callback</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>struct libwebsocket *</i> <b>wsi</b>,
<i>enum libwebsocket_callback_reasons</i> <b>reason</b>,
<i>void *</i> <b>user</b>,
<i>void *</i> <b>in</b>,
<i>size_t</i> <b>len</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websockets context
<dt><b>wsi</b>
<dd>Opaque websocket instance pointer
<dt><b>reason</b>
<dd>The reason for the call
<dt><b>user</b>
<dd>Pointer to per-session user data allocated by library
<dt><b>in</b>
<dd>Pointer used for some callback reasons
<dt><b>len</b>
<dd>Length set for some callback reasons
</dl>
<h3>Description</h3>
<blockquote>
This callback is the way the user controls what is served. All the
protocol detail is hidden and handled by the library.
<p>
For each connection / session there is user data allocated that is
pointed to by "user". You set the size of this user data area when
the library is initialized with libwebsocket_create_server.
<p>
You get an opportunity to initialize user data when called back with
LWS_CALLBACK_ESTABLISHED reason.
</blockquote>
<h3>LWS_CALLBACK_ESTABLISHED</h3>
<blockquote>
after the server completes a handshake with
an incoming client
</blockquote>
<h3>LWS_CALLBACK_CLIENT_CONNECTION_ERROR</h3>
<blockquote>
the request client connection has
been unable to complete a handshake with the remote server
</blockquote>
<h3>LWS_CALLBACK_CLIENT_ESTABLISHED</h3>
<blockquote>
after your client connection completed
a handshake with the remote server
</blockquote>
<h3>LWS_CALLBACK_CLOSED</h3>
<blockquote>
when the websocket session ends
</blockquote>
<h3>LWS_CALLBACK_BROADCAST</h3>
<blockquote>
signal to send to client (you would use
<b>libwebsocket_write</b> taking care about the
special buffer requirements
</blockquote>
<h3>LWS_CALLBACK_RECEIVE</h3>
<blockquote>
data has appeared for this server endpoint from a
remote client, it can be found at *in and is
len bytes long
</blockquote>
<h3>LWS_CALLBACK_CLIENT_RECEIVE_PONG</h3>
<blockquote>
if you elected to see PONG packets,
they appear with this callback reason. PONG
packets only exist in 04+ protocol
</blockquote>
<h3>LWS_CALLBACK_CLIENT_RECEIVE</h3>
<blockquote>
data has appeared from the server for the
client connection, it can be found at *in and
is len bytes long
</blockquote>
<h3>LWS_CALLBACK_HTTP</h3>
<blockquote>
an http request has come from a client that is not
asking to upgrade the connection to a websocket
one. This is a chance to serve http content,
for example, to send a script to the client
which will then open the websockets connection.
<tt><b>in</b></tt> points to the URI path requested and
<b>libwebsockets_serve_http_file</b> makes it very
simple to send back a file to the client.
</blockquote>
<h3>LWS_CALLBACK_SERVER_WRITEABLE</h3>
<blockquote>
If you call
<b>libwebsocket_callback_on_writable</b> on a connection, you will
get one of these callbacks coming when the connection socket
is able to accept another write packet without blocking.
If it already was able to take another packet without blocking,
you'll get this callback at the next call to the service loop
function. Notice that CLIENTs get LWS_CALLBACK_CLIENT_WRITEABLE
and servers get LWS_CALLBACK_SERVER_WRITEABLE.
</blockquote>
<h3>LWS_CALLBACK_FILTER_NETWORK_CONNECTION</h3>
<blockquote>
called when a client connects to
the server at network level; the connection is accepted but then
passed to this callback to decide whether to hang up immediately
or not, based on the client IP. <tt><b>user</b></tt> contains the connection
socket's descriptor. Return non-zero to terminate
the connection before sending or receiving anything.
Because this happens immediately after the network connection
from the client, there's no websocket protocol selected yet so
this callback is issued only to protocol 0.
</blockquote>
<h3>LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION</h3>
<blockquote>
called when the handshake has
been received and parsed from the client, but the response is
not sent yet. Return non-zero to disallow the connection.
<tt><b>user</b></tt> is a pointer to an array of struct lws_tokens, you can
use the header enums lws_token_indexes from libwebsockets.h
to check for and read the supported header presence and
content before deciding to allow the handshake to proceed or
to kill the connection.
</blockquote>
<h3>LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS</h3>
<blockquote>
if configured for
including OpenSSL support, this callback allows your user code
to perform extra <b>SSL_CTX_load_verify_locations</b> or similar
calls to direct OpenSSL where to find certificates the client
can use to confirm the remote server identity. <tt><b>user</b></tt> is the
OpenSSL SSL_CTX*
</blockquote>
<h3>LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS</h3>
<blockquote>
if configured for
including OpenSSL support, this callback allows your user code
to load extra certifcates into the server which allow it to
verify the validity of certificates returned by clients. <tt><b>user</b></tt>
is the server's OpenSSL SSL_CTX*
</blockquote>
<h3>LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION</h3>
<blockquote>
if the
libwebsockets context was created with the option
LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT, then this
callback is generated during OpenSSL verification of the cert
sent from the client. It is sent to protocol[0] callback as
no protocol has been negotiated on the connection yet.
Notice that the libwebsockets context and wsi are both NULL
during this callback. See
</blockquote>
<h3>http</h3>
<blockquote>
//www.openssl.org/docs/ssl/SSL_CTX_set_verify.html
to understand more detail about the OpenSSL callback that
generates this libwebsockets callback and the meanings of the
arguments passed. In this callback, <tt><b>user</b></tt> is the x509_ctx,
<tt><b>in</b></tt> is the ssl pointer and <tt><b>len</b></tt> is preverify_ok
Notice that this callback maintains libwebsocket return
conventions, return 0 to mean the cert is OK or 1 to fail it.
This also means that if you don't handle this callback then
the default callback action of returning 0 allows the client
certificates.
</blockquote>
<h3>LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER</h3>
<blockquote>
this callback happens
when a client handshake is being compiled. <tt><b>user</b></tt> is NULL,
<tt><b>in</b></tt> is a char **, it's pointing to a char * which holds the
next location in the header buffer where you can add
headers, and <tt><b>len</b></tt> is the remaining space in the header buffer,
which is typically some hundreds of bytes. So, to add a canned
cookie, your handler code might look similar to:
<p>
char **p = (char **)in;
<p>
if (len &lt; 100)
return 1;
<p>
*p += sprintf(*p, "Cookie: a=b\x0d\x0a");
<p>
return 0;
<p>
Notice if you add anything, you just have to take care about
the CRLF on the line you added. Obviously this callback is
optional, if you don't handle it everything is fine.
<p>
Notice the callback is coming to protocols[0] all the time,
because there is no specific protocol handshook yet.
</blockquote>
<h3>LWS_CALLBACK_CONFIRM_EXTENSION_OKAY</h3>
<blockquote>
When the server handshake code
sees that it does support a requested extension, before
accepting the extension by additing to the list sent back to
the client it gives this callback just to check that it's okay
to use that extension. It calls back to the requested protocol
and with <tt><b>in</b></tt> being the extension name, <tt><b>len</b></tt> is 0 and <tt><b>user</b></tt> is
valid. Note though at this time the ESTABLISHED callback hasn't
happened yet so if you initialize <tt><b>user</b></tt> content there, <tt><b>user</b></tt>
content during this callback might not be useful for anything.
Notice this callback comes to protocols[0].
</blockquote>
<h3>LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED</h3>
<blockquote>
When a client
connection is being prepared to start a handshake to a server,
each supported extension is checked with protocols[0] callback
with this reason, giving the user code a chance to suppress the
claim to support that extension by returning non-zero. If
unhandled, by default 0 will be returned and the extension
support included in the header to the server. Notice this
callback comes to protocols[0].
<p>
The next four reasons are optional and only need taking care of if you
will be integrating libwebsockets sockets into an external polling
array.
</blockquote>
<h3>LWS_CALLBACK_ADD_POLL_FD</h3>
<blockquote>
libwebsocket deals with its <b>poll</b> loop
internally, but in the case you are integrating with another
server you will need to have libwebsocket sockets share a
polling array with the other server. This and the other
POLL_FD related callbacks let you put your specialized
poll array interface code in the callback for protocol 0, the
first protocol you support, usually the HTTP protocol in the
serving case. This callback happens when a socket needs to be
</blockquote>
<h3>added to the polling loop</h3>
<blockquote>
<tt><b>user</b></tt> contains the fd, and
<tt><b>len</b></tt> is the events bitmap (like, POLLIN). If you are using the
internal polling loop (the "service" callback), you can just
ignore these callbacks.
</blockquote>
<h3>LWS_CALLBACK_DEL_POLL_FD</h3>
<blockquote>
This callback happens when a socket descriptor
needs to be removed from an external polling array. <tt><b>user</b></tt> is
the socket desricptor. If you are using the internal polling
loop, you can just ignore it.
</blockquote>
<h3>LWS_CALLBACK_SET_MODE_POLL_FD</h3>
<blockquote>
This callback happens when libwebsockets
wants to modify the events for the socket descriptor in <tt><b>user</b></tt>.
The handler should OR <tt><b>len</b></tt> on to the events member of the pollfd
struct for this socket descriptor. If you are using the
internal polling loop, you can just ignore it.
</blockquote>
<h3>LWS_CALLBACK_CLEAR_MODE_POLL_FD</h3>
<blockquote>
This callback occurs when libwebsockets
wants to modify the events for the socket descriptor in <tt><b>user</b></tt>.
The handler should AND ~<tt><b>len</b></tt> on to the events member of the
pollfd struct for this socket descriptor. If you are using the
internal polling loop, you can just ignore it.
</blockquote>
<hr>
<h2>extension_callback - Hooks to allow extensions to operate</h2>
<i>LWS_EXTERN int</i>
<b>extension_callback</b>
(<i>struct libwebsocket_context *</i> <b>context</b>,
<i>struct libwebsocket_extension *</i> <b>ext</b>,
<i>struct libwebsocket *</i> <b>wsi</b>,
<i>enum libwebsocket_extension_callback_reasons</i> <b>reason</b>,
<i>void *</i> <b>user</b>,
<i>void *</i> <b>in</b>,
<i>size_t</i> <b>len</b>)
<h3>Arguments</h3>
<dl>
<dt><b>context</b>
<dd>Websockets context
<dt><b>ext</b>
<dd>This extension
<dt><b>wsi</b>
<dd>Opaque websocket instance pointer
<dt><b>reason</b>
<dd>The reason for the call
<dt><b>user</b>
<dd>Pointer to per-session user data allocated by library
<dt><b>in</b>
<dd>Pointer used for some callback reasons
<dt><b>len</b>
<dd>Length set for some callback reasons
</dl>
<h3>Description</h3>
<blockquote>
Each extension that is active on a particular connection receives
callbacks during the connection lifetime to allow the extension to
operate on websocket data and manage itself.
<p>
Libwebsockets takes care of allocating and freeing "user" memory for
each active extension on each connection. That is what is pointed to
by the <tt><b>user</b></tt> parameter.
</blockquote>
<h3>LWS_EXT_CALLBACK_CONSTRUCT</h3>
<blockquote>
called when the server has decided to
select this extension from the list provided by the client,
just before the server will send back the handshake accepting
the connection with this extension active. This gives the
extension a chance to initialize its connection context found
in <tt><b>user</b></tt>.
</blockquote>
<h3>LWS_EXT_CALLBACK_CLIENT_CONSTRUCT</h3>
<blockquote>
same as LWS_EXT_CALLBACK_CONSTRUCT
but called when client is instantiating this extension. Some
extensions will work the same on client and server side and then
you can just merge handlers for both CONSTRUCTS.
</blockquote>
<h3>LWS_EXT_CALLBACK_DESTROY</h3>
<blockquote>
called when the connection the extension was
being used on is about to be closed and deallocated. It's the
last chance for the extension to deallocate anything it has
allocated in the user data (pointed to by <tt><b>user</b></tt>) before the
user data is deleted. This same callback is used whether you
are in client or server instantiation context.
</blockquote>
<h3>LWS_EXT_CALLBACK_PACKET_RX_PREPARSE</h3>
<blockquote>
when this extension was active on
a connection, and a packet of data arrived at the connection,
it is passed to this callback to give the extension a chance to
change the data, eg, decompress it. <tt><b>user</b></tt> is pointing to the
extension's private connection context data, <tt><b>in</b></tt> is pointing
to an lws_tokens struct, it consists of a char * pointer called
token, and an int called token_len. At entry, these are
set to point to the received buffer and set to the content
length. If the extension will grow the content, it should use
a new buffer allocated in its private user context data and
set the pointed-to lws_tokens members to point to its buffer.
</blockquote>
<h3>LWS_EXT_CALLBACK_PACKET_TX_PRESEND</h3>
<blockquote>
this works the same way as
LWS_EXT_CALLBACK_PACKET_RX_PREPARSE above, except it gives the
extension a chance to change websocket data just before it will
be sent out. Using the same lws_token pointer scheme in <tt><b>in</b></tt>,
the extension can change the buffer and the length to be
transmitted how it likes. Again if it wants to grow the
buffer safely, it should copy the data into its own buffer and
set the lws_tokens token pointer to it.
</blockquote>
<hr>
<h2>struct libwebsocket_protocols - List of protocols and handlers server supports.</h2>
<b>struct libwebsocket_protocols</b> {<br>
&nbsp; &nbsp; <i>const char *</i> <b>name</b>;<br>
&nbsp; &nbsp; <i>callback_function *</i> <b>callback</b>;<br>
&nbsp; &nbsp; <i>size_t</i> <b>per_session_data_size</b>;<br>
&nbsp; &nbsp; <i>struct libwebsocket_context *</i> <b>owning_server</b>;<br>
&nbsp; &nbsp; <i>int</i> <b>broadcast_socket_port</b>;<br>
&nbsp; &nbsp; <i>int</i> <b>broadcast_socket_user_fd</b>;<br>
&nbsp; &nbsp; <i>int</i> <b>protocol_index</b>;<br>
};<br>
<h3>Members</h3>
<dl>
<dt><b>name</b>
<dd>Protocol name that must match the one given in the client
Javascript new WebSocket(url, 'protocol') name
<dt><b>callback</b>
<dd>The service callback used for this protocol. It allows the
service action for an entire protocol to be encapsulated in
the protocol-specific callback
<dt><b>per_session_data_size</b>
<dd>Each new connection using this protocol gets
this much memory allocated on connection establishment and
freed on connection takedown. A pointer to this per-connection
allocation is passed into the callback in the 'user' parameter
<dt><b>owning_server</b>
<dd>the server init call fills in this opaque pointer when
registering this protocol with the server.
<dt><b>broadcast_socket_port</b>
<dd>the server init call fills this in with the
localhost port number used to forward broadcasts for this
protocol
<dt><b>broadcast_socket_user_fd</b>
<dd>the server init call fills this in ... the <b>main</b>
process context can write to this socket to perform broadcasts
(use the <b>libwebsockets_broadcast</b> api to do this instead,
it works from any process context)
<dt><b>protocol_index</b>
<dd>which protocol we are starting from zero
</dl>
<h3>Description</h3>
<blockquote>
This structure represents one protocol supported by the server. An
array of these structures is passed to <b>libwebsocket_create_server</b>
allows as many protocols as you like to be handled by one server.
</blockquote>
<hr>
<h2>struct libwebsocket_extension - An extension we know how to cope with</h2>
<b>struct libwebsocket_extension</b> {<br>
&nbsp; &nbsp; <i>const char *</i> <b>name</b>;<br>
&nbsp; &nbsp; <i>extension_callback_function *</i> <b>callback</b>;<br>
&nbsp; &nbsp; <i>size_t</i> <b>per_session_data_size</b>;<br>
&nbsp; &nbsp; <i>void *</i> <b>per_context_private_data</b>;<br>
};<br>
<h3>Members</h3>
<dl>
<dt><b>name</b>
<dd>Formal extension name, eg, "deflate-stream"
<dt><b>callback</b>
<dd>Service callback
<dt><b>per_session_data_size</b>
<dd>Libwebsockets will auto-malloc this much
memory for the use of the extension, a pointer
to it comes in the <tt><b>user</b></tt> callback parameter
<dt><b>per_context_private_data</b>
<dd>Optional storage for this externsion that
is per-context, so it can track stuff across
all sessions, etc, if it wants
</dl>
<hr>

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@ -0,0 +1,63 @@
Name: libwebsockets
Version: 0.1
Release: 45.gmaster_f1d2113d%{?dist}
Summary: Websocket Server Library
Group: System
License: GPL
URL: http://warmcat.com
Source0: %{name}-%{version}.tar.gz
BuildRoot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
BuildRequires: openssl-devel
Requires: openssl-devel
%description
Webserver server library
%package devel
Summary: Development files for libwebsockets
Group: Development/Libraries
Requires: %{name} = %{version}-%{release}
Requires: openssl-devel
%description devel
Development files for libwebsockets
%prep
%setup -q
%build
./configure --prefix=/usr --libdir=%{_libdir} --enable-openssl
make
%install
rm -rf $RPM_BUILD_ROOT
make install DESTDIR=$RPM_BUILD_ROOT
%clean
rm -rf $RPM_BUILD_ROOT
%files
%defattr(-,root,root,-)
%attr(755,root,root) /usr/bin/libwebsockets-test-server
%attr(755,root,root)
/%{_libdir}/libwebsockets.so.0.0.3
/%{_libdir}/libwebsockets.so.0
/%{_libdir}/libwebsockets.so
/%{_libdir}/libwebsockets.la
%attr(755,root,root) /usr/share/libwebsockets-test-server
%attr(755,root,root) /usr/share/libwebsockets-test-server-extpoll
%attr(755,root,root) /usr/share/libwebsockets-test-client
%attr(755,root,root) /usr/share/libwebsockets-test-ping
%doc
%files devel
%defattr(-,root,root,-)
/usr/include/*
%attr(755,root,root)
/%{_libdir}/libwebsockets.a
%changelog

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bin_PROGRAMS=libwebsockets-test-server libwebsockets-test-client libwebsockets-test-server-extpoll libwebsockets-test-fraggle
libwebsockets_test_server_SOURCES=test-server.c
libwebsockets_test_server_LDADD=-L../lib -lwebsockets -lz
libwebsockets_test_client_SOURCES=test-client.c
libwebsockets_test_client_LDADD=-L../lib -lwebsockets -lz
libwebsockets_test_server_extpoll_SOURCES=test-server-extpoll.c
libwebsockets_test_server_extpoll_LDADD=-L../lib -lwebsockets -lz
libwebsockets_test_fraggle_SOURCES=test-fraggle.c
libwebsockets_test_fraggle_LDADD=-L../lib -lwebsockets -lz
if MINGW
libwebsockets_test_server_CFLAGS:= -w -I../win32port/win32helpers
libwebsockets_test_client_CFLAGS:= -w -I../win32port/win32helpers
libwebsockets_test_server_extpoll_CFLAGS:= -w -I../win32port/win32helpers
libwebsockets_test_fraggle_CFLAGS:= -w -I../win32port/win32helpers
libwebsockets_test_server_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
libwebsockets_test_client_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
libwebsockets_test_server_extpoll_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
libwebsockets_test_fraggle_LDADD+= -lm -luser32 -ladvapi32 -lkernel32 -lgcc -lws2_32 -lz
else
libwebsockets_test_server_CFLAGS:= -Werror
libwebsockets_test_client_CFLAGS:= -Werror
libwebsockets_test_server_extpoll_CFLAGS:= -Werror
libwebsockets_test_fraggle_CFLAGS:= -Werror
endif
libwebsockets_test_server_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
libwebsockets_test_client_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
libwebsockets_test_server_extpoll_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
libwebsockets_test_fraggle_CFLAGS+= -Wall -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
if NOPING
else
bin_PROGRAMS+=libwebsockets-test-ping
libwebsockets_test_ping_SOURCES=test-ping.c
libwebsockets_test_ping_LDADD=-L../lib -lwebsockets
libwebsockets_test_ping_CFLAGS:= -Wall -Werror -std=gnu99 -pedantic -DINSTALL_DATADIR=\"@datadir@\" -DLWS_OPENSSL_CLIENT_CERTS=\"@clientcertdir@\"
endif
#
# cook a random test cert and key
# notice your real cert and key will want to be 0600 permissions
libwebsockets-test-server.pem libwebsockets-test-server.key.pem:
printf "GB\nErewhon\nAll around\nlibwebsockets-test\n\nlocalhost\nnone@invalid.org\n" | \
openssl req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout \
./libwebsockets-test-server.key.pem -out ./libwebsockets-test-server.pem >/dev/null 2>&1 && \
chmod 644 ./libwebsockets-test-server.key.pem \
./libwebsockets-test-server.pem
clean-local:
rm -f ./libwebsockets-test-server.key.pem ./libwebsockets-test-server.pem
install-data-local:libwebsockets-test-server.key.pem libwebsockets-test-server.pem
mkdir -p $(DESTDIR)$(datadir)/libwebsockets-test-server
cp -a test.html favicon.ico libwebsockets-test-server.key.pem libwebsockets-test-server.pem \
$(DESTDIR)$(datadir)/libwebsockets-test-server

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# Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
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# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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VPATH = @srcdir@
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#
# cook a random test cert and key
# notice your real cert and key will want to be 0600 permissions
libwebsockets-test-server.pem libwebsockets-test-server.key.pem:
printf "GB\nErewhon\nAll around\nlibwebsockets-test\n\nlocalhost\nnone@invalid.org\n" | \
openssl req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout \
./libwebsockets-test-server.key.pem -out ./libwebsockets-test-server.pem >/dev/null 2>&1 && \
chmod 644 ./libwebsockets-test-server.key.pem \
./libwebsockets-test-server.pem
clean-local:
rm -f ./libwebsockets-test-server.key.pem ./libwebsockets-test-server.pem
install-data-local:libwebsockets-test-server.key.pem libwebsockets-test-server.pem
mkdir -p $(DESTDIR)$(datadir)/libwebsockets-test-server
cp -a test.html favicon.ico libwebsockets-test-server.key.pem libwebsockets-test-server.pem \
$(DESTDIR)$(datadir)/libwebsockets-test-server
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

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libs/libwebsockets/test-server/test-client.c Normal file
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/*
* libwebsockets-test-client - libwebsockets test implementation
*
* Copyright (C) 2011 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include "../lib/libwebsockets.h"
static unsigned int opts;
static int was_closed;
static int deny_deflate;
static int deny_mux;
static struct libwebsocket *wsi_mirror;
/*
* This demo shows how to connect multiple websockets simultaneously to a
* websocket server (there is no restriction on their having to be the same
* server just it simplifies the demo).
*
* dumb-increment-protocol: we connect to the server and print the number
* we are given
*
* lws-mirror-protocol: draws random circles, which are mirrored on to every
* client (see them being drawn in every browser
* session also using the test server)
*/
enum demo_protocols {
PROTOCOL_DUMB_INCREMENT,
PROTOCOL_LWS_MIRROR,
/* always last */
DEMO_PROTOCOL_COUNT
};
/* dumb_increment protocol */
static int
callback_dumb_increment(struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
switch (reason) {
case LWS_CALLBACK_CLOSED:
fprintf(stderr, "LWS_CALLBACK_CLOSED\n");
was_closed = 1;
break;
case LWS_CALLBACK_CLIENT_RECEIVE:
((char *)in)[len] = '\0';
fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in);
break;
/* because we are protocols[0] ... */
case LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED:
if ((strcmp(in, "deflate-stream") == 0) && deny_deflate) {
fprintf(stderr, "denied deflate-stream extension\n");
return 1;
}
if ((strcmp(in, "x-google-mux") == 0) && deny_mux) {
fprintf(stderr, "denied x-google-mux extension\n");
return 1;
}
break;
default:
break;
}
return 0;
}
/* lws-mirror_protocol */
static int
callback_lws_mirror(struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 4096 +
LWS_SEND_BUFFER_POST_PADDING];
int l;
switch (reason) {
case LWS_CALLBACK_CLOSED:
fprintf(stderr, "mirror: LWS_CALLBACK_CLOSED\n");
wsi_mirror = NULL;
break;
case LWS_CALLBACK_CLIENT_ESTABLISHED:
/*
* start the ball rolling,
* LWS_CALLBACK_CLIENT_WRITEABLE will come next service
*/
libwebsocket_callback_on_writable(this, wsi);
break;
case LWS_CALLBACK_CLIENT_RECEIVE:
/* fprintf(stderr, "rx %d '%s'\n", (int)len, (char *)in); */
break;
case LWS_CALLBACK_CLIENT_WRITEABLE:
l = sprintf((char *)&buf[LWS_SEND_BUFFER_PRE_PADDING],
"c #%06X %d %d %d;",
(int)random() & 0xffffff,
(int)random() % 500,
(int)random() % 250,
(int)random() % 24);
libwebsocket_write(wsi,
&buf[LWS_SEND_BUFFER_PRE_PADDING], l, opts | LWS_WRITE_TEXT);
/* get notified as soon as we can write again */
libwebsocket_callback_on_writable(this, wsi);
/*
* without at least this delay, we choke the browser
* and the connection stalls, despite we now take care about
* flow control
*/
usleep(200);
break;
default:
break;
}
return 0;
}
/* list of supported protocols and callbacks */
static struct libwebsocket_protocols protocols[] = {
{
"dumb-increment-protocol",
callback_dumb_increment,
0,
},
{
"lws-mirror-protocol",
callback_lws_mirror,
0,
},
{ /* end of list */
NULL,
NULL,
0
}
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p' },
{ "ssl", no_argument, NULL, 's' },
{ "killmask", no_argument, NULL, 'k' },
{ "version", required_argument, NULL, 'v' },
{ "undeflated", no_argument, NULL, 'u' },
{ "nomux", no_argument, NULL, 'n' },
{ NULL, 0, 0, 0 }
};
int main(int argc, char **argv)
{
int n = 0;
int port = 7681;
int use_ssl = 0;
struct libwebsocket_context *context;
const char *address;
struct libwebsocket *wsi_dumb;
int ietf_version = -1; /* latest */
int mirror_lifetime = 0;
fprintf(stderr, "libwebsockets test client\n"
"(C) Copyright 2010 Andy Green <andy@warmcat.com> "
"licensed under LGPL2.1\n");
if (argc < 2)
goto usage;
while (n >= 0) {
n = getopt_long(argc, argv, "nuv:khsp:", options, NULL);
if (n < 0)
continue;
switch (n) {
case 's':
use_ssl = 2; /* 2 = allow selfsigned */
break;
case 'p':
port = atoi(optarg);
break;
case 'k':
opts = LWS_WRITE_CLIENT_IGNORE_XOR_MASK;
break;
case 'v':
ietf_version = atoi(optarg);
break;
case 'u':
deny_deflate = 1;
break;
case 'n':
deny_mux = 1;
break;
case 'h':
goto usage;
}
}
if (optind >= argc)
goto usage;
address = argv[optind];
/*
* create the websockets context. This tracks open connections and
* knows how to route any traffic and which protocol version to use,
* and if each connection is client or server side.
*
* For this client-only demo, we tell it to not listen on any port.
*/
context = libwebsocket_create_context(CONTEXT_PORT_NO_LISTEN, NULL,
protocols, libwebsocket_internal_extensions,
NULL, NULL, -1, -1, 0);
if (context == NULL) {
fprintf(stderr, "Creating libwebsocket context failed\n");
return 1;
}
/* create a client websocket using dumb increment protocol */
wsi_dumb = libwebsocket_client_connect(context, address, port, use_ssl,
"/", argv[optind], argv[optind],
protocols[PROTOCOL_DUMB_INCREMENT].name, ietf_version);
if (wsi_dumb == NULL) {
fprintf(stderr, "libwebsocket dumb connect failed\n");
return -1;
}
fprintf(stderr, "Websocket connections opened\n");
/*
* sit there servicing the websocket context to handle incoming
* packets, and drawing random circles on the mirror protocol websocket
*/
n = 0;
while (n >= 0 && !was_closed) {
n = libwebsocket_service(context, 1000);
if (n < 0)
continue;
if (wsi_mirror == NULL) {
/* create a client websocket using mirror protocol */
wsi_mirror = libwebsocket_client_connect(context,
address, port, use_ssl, "/",
argv[optind], argv[optind],
protocols[PROTOCOL_LWS_MIRROR].name,
ietf_version);
if (wsi_mirror == NULL) {
fprintf(stderr, "libwebsocket "
"dumb connect failed\n");
return -1;
}
mirror_lifetime = 10 + (random() & 1023);
fprintf(stderr, "opened mirror connection with "
"%d lifetime\n", mirror_lifetime);
} else {
mirror_lifetime--;
if (mirror_lifetime == 0) {
fprintf(stderr, "closing mirror session\n");
libwebsocket_close_and_free_session(context,
wsi_mirror, LWS_CLOSE_STATUS_GOINGAWAY);
/*
* wsi_mirror will get set to NULL in
* callback when close completes
*/
}
}
}
fprintf(stderr, "Exiting\n");
libwebsocket_context_destroy(context);
return 0;
usage:
fprintf(stderr, "Usage: libwebsockets-test-client "
"<server address> [--port=<p>] "
"[--ssl] [-k] [-v <ver>]\n");
return 1;
}

333
libs/libwebsockets/test-server/test-fraggle.c Normal file
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/*
* libwebsockets-test-fraggle - random fragmentation test
*
* Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/time.h>
#include "../lib/libwebsockets.h"
#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
static int client;
static int terminate;
enum demo_protocols {
PROTOCOL_FRAGGLE,
/* always last */
DEMO_PROTOCOL_COUNT
};
/* fraggle protocol */
enum fraggle_states {
FRAGSTATE_START_MESSAGE,
FRAGSTATE_RANDOM_PAYLOAD,
FRAGSTATE_POST_PAYLOAD_SUM,
};
struct per_session_data__fraggle {
int packets_left;
int total_message;
unsigned long sum;
enum fraggle_states state;
};
static int
callback_fraggle(struct libwebsocket_context *context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
int n;
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 2048 +
LWS_SEND_BUFFER_POST_PADDING];
struct per_session_data__fraggle *psf = user;
int chunk;
int write_mode = LWS_WRITE_CONTINUATION;
unsigned long sum;
unsigned char *p = (unsigned char *)in;
unsigned char *bp = &buf[LWS_SEND_BUFFER_PRE_PADDING];
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
fprintf(stderr, "server sees client connect\n");
psf->state = FRAGSTATE_START_MESSAGE;
/* start the ball rolling */
libwebsocket_callback_on_writable(context, wsi);
break;
case LWS_CALLBACK_CLIENT_ESTABLISHED:
fprintf(stderr, "client connects to server\n");
psf->state = FRAGSTATE_START_MESSAGE;
break;
case LWS_CALLBACK_CLIENT_RECEIVE:
switch (psf->state) {
case FRAGSTATE_START_MESSAGE:
psf->state = FRAGSTATE_RANDOM_PAYLOAD;
psf->sum = 0;
psf->total_message = 0;
psf->packets_left = 0;
/* fallthru */
case FRAGSTATE_RANDOM_PAYLOAD:
for (n = 0; n < len; n++)
psf->sum += p[n];
psf->total_message += len;
psf->packets_left++;
if (libwebsocket_is_final_fragment(wsi))
psf->state = FRAGSTATE_POST_PAYLOAD_SUM;
break;
case FRAGSTATE_POST_PAYLOAD_SUM:
sum = p[0] << 24;
sum |= p[1] << 16;
sum |= p[2] << 8;
sum |= p[3];
if (sum == psf->sum)
fprintf(stderr, "EOM received %d correctly "
"from %d fragments\n",
psf->total_message, psf->packets_left);
else
fprintf(stderr, "**** ERROR at EOM: "
"length %d, rx sum = 0x%lX, "
"server says it sent 0x%lX\n",
psf->total_message, psf->sum, sum);
psf->state = FRAGSTATE_START_MESSAGE;
break;
}
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
switch (psf->state) {
case FRAGSTATE_START_MESSAGE:
psf->packets_left = (random() % 1024) + 1;
fprintf(stderr, "Spamming %d random fragments\n",
psf->packets_left);
psf->sum = 0;
psf->total_message = 0;
write_mode = LWS_WRITE_BINARY;
psf->state = FRAGSTATE_RANDOM_PAYLOAD;
/* fallthru */
case FRAGSTATE_RANDOM_PAYLOAD:
chunk = (random() % 2000) + 1;
psf->total_message += chunk;
libwebsockets_get_random(context, bp, chunk);
for (n = 0; n < chunk; n++)
psf->sum += bp[n];
psf->packets_left--;
if (psf->packets_left)
write_mode |= LWS_WRITE_NO_FIN;
else
psf->state = FRAGSTATE_POST_PAYLOAD_SUM;
n = libwebsocket_write(wsi, bp, chunk, write_mode);
libwebsocket_callback_on_writable(context, wsi);
break;
case FRAGSTATE_POST_PAYLOAD_SUM:
fprintf(stderr, "Spamming session over, "
"len = %d. sum = 0x%lX\n",
psf->total_message, psf->sum);
bp[0] = psf->sum >> 24;
bp[1] = psf->sum >> 16;
bp[2] = psf->sum >> 8;
bp[3] = psf->sum;
n = libwebsocket_write(wsi, (unsigned char *)bp,
4, LWS_WRITE_BINARY);
psf->state = FRAGSTATE_START_MESSAGE;
libwebsocket_callback_on_writable(context, wsi);
break;
}
break;
case LWS_CALLBACK_CLOSED:
terminate = 1;
break;
/* because we are protocols[0] ... */
case LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED:
if (strcmp(in, "deflate-stream") == 0) {
fprintf(stderr, "denied deflate-stream extension\n");
return 1;
}
break;
default:
break;
}
return 0;
}
/* list of supported protocols and callbacks */
static struct libwebsocket_protocols protocols[] = {
{
"fraggle-protocol",
callback_fraggle,
sizeof(struct per_session_data__fraggle),
},
{
NULL, NULL, 0 /* End of list */
}
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p' },
{ "ssl", no_argument, NULL, 's' },
{ "killmask", no_argument, NULL, 'k' },
{ "interface", required_argument, NULL, 'i' },
{ "client", no_argument, NULL, 'c' },
{ NULL, 0, 0, 0 }
};
int main(int argc, char **argv)
{
int n = 0;
const char *cert_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
const char *key_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
int port = 7681;
int use_ssl = 0;
struct libwebsocket_context *context;
int opts = 0;
char interface_name[128] = "";
const char *interface = NULL;
struct libwebsocket *wsi;
const char *address;
int server_port = port;
fprintf(stderr, "libwebsockets test fraggle\n"
"(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
"licensed under LGPL2.1\n");
while (n >= 0) {
n = getopt_long(argc, argv, "ci:khsp:", options, NULL);
if (n < 0)
continue;
switch (n) {
case 's':
use_ssl = 1;
break;
case 'k':
opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
break;
case 'p':
port = atoi(optarg);
server_port = port;
break;
case 'i':
strncpy(interface_name, optarg, sizeof interface_name);
interface_name[(sizeof interface_name) - 1] = '\0';
interface = interface_name;
break;
case 'c':
client = 1;
fprintf(stderr, " Client mode\n");
break;
case 'h':
fprintf(stderr, "Usage: libwebsockets-test-fraggle "
"[--port=<p>] [--ssl] [--client]\n");
exit(1);
}
}
if (client) {
server_port = CONTEXT_PORT_NO_LISTEN;
if (optind >= argc) {
fprintf(stderr, "Must give address of server\n");
return 1;
}
}
if (!use_ssl)
cert_path = key_path = NULL;
context = libwebsocket_create_context(server_port, interface, protocols,
libwebsocket_internal_extensions,
cert_path, key_path, -1, -1, opts);
if (context == NULL) {
fprintf(stderr, "libwebsocket init failed\n");
return -1;
}
if (client) {
address = argv[optind];
fprintf(stderr, "Connecting to %s:%u\n", address, port);
wsi = libwebsocket_client_connect(context, address,
port, use_ssl, "/", address,
"origin", protocols[PROTOCOL_FRAGGLE].name,
-1);
if (wsi == NULL) {
fprintf(stderr, "Client connect to server failed\n");
goto bail;
}
}
n = 0;
while (!n && !terminate)
n = libwebsocket_service(context, 50);
fprintf(stderr, "Terminating...\n");
bail:
libwebsocket_context_destroy(context);
return 0;
}

512
libs/libwebsockets/test-server/test-ping.c Normal file
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/*
* libwebsockets-test-ping - libwebsockets floodping
*
* Copyright (C) 2011 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <sys/ioctl.h>
#include "../lib/libwebsockets.h"
#include <poll.h>
/*
* this is specified in the 04 standard, control frames can only have small
* payload length styles
*/
#define MAX_PING_PAYLOAD 125
#define MAX_MIRROR_PAYLOAD 4096
#define MAX_PING_CLIENTS 256
#define PING_RINGBUFFER_SIZE 256
static struct libwebsocket *ping_wsi[MAX_PING_CLIENTS];
static unsigned int interval_us = 1000000;
static unsigned int size = 64;
static int flood;
static const char *address;
static unsigned char pingbuf[LWS_SEND_BUFFER_PRE_PADDING + MAX_MIRROR_PAYLOAD +
LWS_SEND_BUFFER_POST_PADDING];
static char peer_name[128];
static unsigned long started;
static int screen_width = 80;
static int use_mirror;
static unsigned int write_options;
static unsigned long rtt_min = 100000000;
static unsigned long rtt_max;
static unsigned long rtt_avg;
static unsigned long global_rx_count;
static unsigned long global_tx_count;
static int clients = 1;
static unsigned long interrupted_time;
struct ping {
unsigned long issue_timestamp;
unsigned long index;
unsigned int seen;
};
struct per_session_data__ping {
unsigned long ping_index;
struct ping ringbuffer[PING_RINGBUFFER_SIZE];
int ringbuffer_head;
int ringbuffer_tail;
unsigned long rx_count;
};
/*
* uses the ping pong protocol features to provide an equivalent for the
* ping utility for 04+ websockets
*/
enum demo_protocols {
PROTOCOL_LWS_MIRROR,
/* always last */
DEMO_PROTOCOL_COUNT
};
static int
callback_lws_mirror(struct libwebsocket_context * this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
struct timeval tv;
unsigned char *p;
int shift;
unsigned long l;
unsigned long iv;
int n;
int match = 0;
struct per_session_data__ping *psd = user;
switch (reason) {
case LWS_CALLBACK_CLOSED:
fprintf(stderr, "LWS_CALLBACK_CLOSED on %p\n", (void *)wsi);
/* remove closed guy */
for (n = 0; n < clients; n++)
if (ping_wsi[n] == wsi) {
clients--;
while (n < clients) {
ping_wsi[n] = ping_wsi[n + 1];
n++;
}
}
break;
case LWS_CALLBACK_CLIENT_ESTABLISHED:
psd->rx_count = 0;
psd->ping_index = 1;
psd->ringbuffer_head = 0;
psd->ringbuffer_tail = 0;
/*
* start the ball rolling,
* LWS_CALLBACK_CLIENT_WRITEABLE will come next service
*/
libwebsocket_callback_on_writable(this, wsi);
break;
case LWS_CALLBACK_CLIENT_RECEIVE:
case LWS_CALLBACK_CLIENT_RECEIVE_PONG:
gettimeofday(&tv, NULL);
iv = (tv.tv_sec * 1000000) + tv.tv_usec;
psd->rx_count++;
shift = 56;
p = in;
l = 0;
while (shift >= 0) {
l |= (*p++) << shift;
shift -= 8;
}
/* find it in the ringbuffer, look backwards from head */
n = psd->ringbuffer_head;
while (!match) {
if (psd->ringbuffer[n].index == l) {
psd->ringbuffer[n].seen++;
match = 1;
continue;
}
if (n == psd->ringbuffer_tail) {
match = -1;
continue;
}
if (n == 0)
n = PING_RINGBUFFER_SIZE - 1;
else
n--;
}
if (match < 1) {
if (!flood)
fprintf(stderr, "%d bytes from %s: req=%ld "
"time=(unknown)\n", (int)len, address, l);
else
fprintf(stderr, "\b \b");
break;
}
if (psd->ringbuffer[n].seen > 1)
fprintf(stderr, "DUP! ");
if ((iv - psd->ringbuffer[n].issue_timestamp) < rtt_min)
rtt_min = iv - psd->ringbuffer[n].issue_timestamp;
if ((iv - psd->ringbuffer[n].issue_timestamp) > rtt_max)
rtt_max = iv - psd->ringbuffer[n].issue_timestamp;
rtt_avg += iv - psd->ringbuffer[n].issue_timestamp;
global_rx_count++;
if (!flood)
fprintf(stderr, "%d bytes from %s: req=%ld "
"time=%lu.%lums\n", (int)len, address, l,
(iv - psd->ringbuffer[n].issue_timestamp) / 1000,
((iv - psd->ringbuffer[n].issue_timestamp) / 100) % 10);
else
fprintf(stderr, "\b \b");
break;
case LWS_CALLBACK_CLIENT_WRITEABLE:
shift = 56;
p = &pingbuf[LWS_SEND_BUFFER_PRE_PADDING];
/* 64-bit ping index in network byte order */
while (shift >= 0) {
*p++ = psd->ping_index >> shift;
shift -= 8;
}
gettimeofday(&tv, NULL);
psd->ringbuffer[psd->ringbuffer_head].issue_timestamp =
(tv.tv_sec * 1000000) + tv.tv_usec;
psd->ringbuffer[psd->ringbuffer_head].index = psd->ping_index++;
psd->ringbuffer[psd->ringbuffer_head].seen = 0;
if (psd->ringbuffer_head == PING_RINGBUFFER_SIZE - 1)
psd->ringbuffer_head = 0;
else
psd->ringbuffer_head++;
/* snip any re-used tail so we keep to the ring length */
if (psd->ringbuffer_tail == psd->ringbuffer_head) {
if (psd->ringbuffer_tail == PING_RINGBUFFER_SIZE - 1)
psd->ringbuffer_tail = 0;
else
psd->ringbuffer_tail++;
}
global_tx_count++;
if (use_mirror)
libwebsocket_write(wsi,
&pingbuf[LWS_SEND_BUFFER_PRE_PADDING],
size, write_options | LWS_WRITE_BINARY);
else
libwebsocket_write(wsi,
&pingbuf[LWS_SEND_BUFFER_PRE_PADDING],
size, write_options | LWS_WRITE_PING);
if (flood &&
(psd->ping_index - psd->rx_count) < (screen_width - 1))
fprintf(stderr, ".");
break;
default:
break;
}
return 0;
}
/* list of supported protocols and callbacks */
static struct libwebsocket_protocols protocols[] = {
[PROTOCOL_LWS_MIRROR] = {
.name = "lws-mirror-protocol",
.callback = callback_lws_mirror,
.per_session_data_size = sizeof (struct per_session_data__ping),
},
[DEMO_PROTOCOL_COUNT] = { /* end of list */
.callback = NULL
}
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p' },
{ "ssl", no_argument, NULL, 't' },
{ "interval", required_argument, NULL, 'i' },
{ "size", required_argument, NULL, 's' },
{ "protocol", required_argument, NULL, 'n' },
{ "flood", no_argument, NULL, 'f' },
{ "mirror", no_argument, NULL, 'm' },
{ "replicate", required_argument, NULL, 'r' },
{ "killmask", no_argument, NULL, 'k' },
{ "version", required_argument, NULL, 'v' },
{ NULL, 0, 0, 0 }
};
static void
signal_handler(int sig, siginfo_t *si, void *v)
{
struct timeval tv;
gettimeofday(&tv, NULL);
interrupted_time = (tv.tv_sec * 1000000) + tv.tv_usec;
}
int main(int argc, char **argv)
{
int n = 0;
int port = 7681;
int use_ssl = 0;
struct libwebsocket_context *context;
char protocol_name[256];
char ip[30];
struct sigaction sa;
struct timeval tv;
struct winsize w;
unsigned long oldus = 0;
unsigned long l;
int ietf_version = -1;
if (argc < 2)
goto usage;
address = argv[1];
optind++;
while (n >= 0) {
n = getopt_long(argc, argv, "v:kr:hmfts:n:i:p:", options, NULL);
if (n < 0)
continue;
switch (n) {
case 'm':
use_mirror = 1;
break;
case 't':
use_ssl = 2; /* 2 = allow selfsigned */
break;
case 'p':
port = atoi(optarg);
break;
case 'n':
strncpy(protocol_name, optarg, sizeof protocol_name);
protocol_name[(sizeof protocol_name) - 1] = '\0';
protocols[PROTOCOL_LWS_MIRROR].name = protocol_name;
break;
case 'i':
interval_us = 1000000.0 * atof(optarg);
break;
case 's':
size = atoi(optarg);
break;
case 'f':
flood = 1;
break;
case 'r':
clients = atoi(optarg);
if (clients > MAX_PING_CLIENTS || clients < 1) {
fprintf(stderr, "Max clients supportd = %d\n",
MAX_PING_CLIENTS);
return 1;
}
break;
case 'k':
write_options = LWS_WRITE_CLIENT_IGNORE_XOR_MASK;
break;
case 'v':
ietf_version = atoi(optarg);
break;
case 'h':
goto usage;
}
}
if (!use_mirror) {
if (size > MAX_PING_PAYLOAD) {
fprintf(stderr, "Max ping opcode payload size %d\n",
MAX_PING_PAYLOAD);
return 1;
}
} else {
if (size > MAX_MIRROR_PAYLOAD) {
fprintf(stderr, "Max mirror payload size %d\n",
MAX_MIRROR_PAYLOAD);
return 1;
}
}
if (isatty(STDOUT_FILENO))
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1)
if (w.ws_col > 0)
screen_width = w.ws_col;
context = libwebsocket_create_context(CONTEXT_PORT_NO_LISTEN, NULL,
protocols,
libwebsocket_internal_extensions,
NULL, NULL, -1, -1, 0);
if (context == NULL) {
fprintf(stderr, "Creating libwebsocket context failed\n");
return 1;
}
/* create client websockets using dumb increment protocol */
for (n = 0; n < clients; n++) {
ping_wsi[n] = libwebsocket_client_connect(context, address,
port, use_ssl, "/", address,
"origin", protocols[PROTOCOL_LWS_MIRROR].name,
ietf_version);
if (ping_wsi[n] == NULL) {
fprintf(stderr, "client connnection %d failed to "
"connect\n", n);
return 1;
}
}
libwebsockets_get_peer_addresses(
libwebsocket_get_socket_fd(ping_wsi[0]),
peer_name, sizeof peer_name, ip, sizeof ip);
fprintf(stderr, "Websocket PING %s (%s) %d bytes of data.\n",
peer_name, ip, size);
/* set the ^C handler */
sa.sa_sigaction = signal_handler;
sa.sa_flags = SA_SIGINFO;
sigemptyset(&sa.sa_mask);
sigaction(SIGINT, &sa, NULL);
gettimeofday(&tv, NULL);
started = (tv.tv_sec * 1000000) + tv.tv_usec;
/* service loop */
n = 0;
while (n >= 0) {
gettimeofday(&tv, NULL);
l = (tv.tv_sec * 1000000) + tv.tv_usec;
/* servers can hang up on us */
if (clients == 0) {
n = -1;
continue;
}
if (!interrupted_time) {
if ((l - oldus) > interval_us) {
for (n = 0; n < clients; n++)
libwebsocket_callback_on_writable(
context, ping_wsi[n]);
oldus = l;
}
} else
/* allow time for in-flight pongs to come */
if ((l - interrupted_time) > 250000) {
n = -1;
continue;
}
if (!interval_us)
n = libwebsocket_service(context, 0);
else
n = libwebsocket_service(context, 1);
}
/* stats */
fprintf(stderr, "\n--- %s websocket ping statistics "
"using %d connections ---\n"
"%lu packets transmitted, %lu received, "
"%lu%% packet loss, time %ldms\n"
"rtt min/avg/max = %0.3f/%0.3f/%0.3f ms\n"
"payload bandwidth average %0.3f KiBytes/sec\n",
peer_name, clients, global_tx_count, global_rx_count,
((global_tx_count - global_rx_count) * 100) / global_tx_count,
(l - started) / 1000,
((double)rtt_min) / 1000.0,
((double)rtt_avg / global_rx_count) / 1000.0,
((double)rtt_max) / 1000.0,
((double)global_rx_count * (double)size) /
((double)(l - started) / 1000000.0) / 1024.0);
libwebsocket_context_destroy(context);
return 0;
usage:
fprintf(stderr, "Usage: libwebsockets-test-ping "
"<server address> [--port=<p>] "
"[--ssl] [--interval=<float sec>] "
"[--size=<bytes>] "
"[--protocol=<protocolname>] "
"[--mirror] "
"[--replicate=clients>]"
"[--version <version>]"
"\n");
return 1;
}

553
libs/libwebsockets/test-server/test-server-extpoll.c Normal file
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/*
* libwebsockets-test-server-extpoll - libwebsockets external poll loop sample
*
* This acts the same as libwebsockets-test-server but works with the poll
* loop taken out of libwebsockets and into this app. It's an example of how
* you can integrate libwebsockets polling into an app that already has its
* own poll loop.
*
* Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/time.h>
#ifdef __MINGW32__
#include "../win32port/win32helpers/websock-w32.h"
#else
#ifdef __MINGW64__
#include "../win32port/win32helpers/websock-w32.h"
#else
#include <poll.h>
#endif
#endif
#include "../lib/libwebsockets.h"
/*
* This demo server shows how to use libwebsockets for one or more
* websocket protocols in the same server
*
* It defines the following websocket protocols:
*
* dumb-increment-protocol: once the socket is opened, an incrementing
* ascii string is sent down it every 50ms.
* If you send "reset\n" on the websocket, then
* the incrementing number is reset to 0.
*
* lws-mirror-protocol: copies any received packet to every connection also
* using this protocol, including the sender
*/
#define MAX_POLL_ELEMENTS 100
struct pollfd pollfds[100];
int count_pollfds = 0;
enum demo_protocols {
/* always first */
PROTOCOL_HTTP = 0,
PROTOCOL_DUMB_INCREMENT,
PROTOCOL_LWS_MIRROR,
/* always last */
DEMO_PROTOCOL_COUNT
};
#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
/* this protocol server (always the first one) just knows how to do HTTP */
static int callback_http(struct libwebsocket_context * this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason, void *user,
void *in, size_t len)
{
int n;
char client_name[128];
char client_ip[128];
switch (reason) {
case LWS_CALLBACK_HTTP:
fprintf(stderr, "serving HTTP URI %s\n", (char *)in);
if (in && strcmp(in, "/favicon.ico") == 0) {
if (libwebsockets_serve_http_file(wsi,
LOCAL_RESOURCE_PATH"/favicon.ico", "image/x-icon"))
fprintf(stderr, "Failed to send favicon\n");
break;
}
/* send the script... when it runs it'll start websockets */
if (libwebsockets_serve_http_file(wsi,
LOCAL_RESOURCE_PATH"/test.html", "text/html"))
fprintf(stderr, "Failed to send HTTP file\n");
break;
/*
* callback for confirming to continue with client IP appear in
* protocol 0 callback since no websocket protocol has been agreed
* yet. You can just ignore this if you won't filter on client IP
* since the default uhandled callback return is 0 meaning let the
* connection continue.
*/
case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
libwebsockets_get_peer_addresses((int)(long)user, client_name,
sizeof(client_name), client_ip, sizeof(client_ip));
fprintf(stderr, "Received network connect from %s (%s)\n",
client_name, client_ip);
/* if we returned non-zero from here, we kill the connection */
break;
/*
* callbacks for managing the external poll() array appear in
* protocol 0 callback
*/
case LWS_CALLBACK_ADD_POLL_FD:
pollfds[count_pollfds].fd = (int)(long)user;
pollfds[count_pollfds].events = (int)len;
pollfds[count_pollfds++].revents = 0;
break;
case LWS_CALLBACK_DEL_POLL_FD:
for (n = 0; n < count_pollfds; n++)
if (pollfds[n].fd == (int)(long)user)
while (n < count_pollfds) {
pollfds[n] = pollfds[n + 1];
n++;
}
count_pollfds--;
break;
case LWS_CALLBACK_SET_MODE_POLL_FD:
for (n = 0; n < count_pollfds; n++)
if (pollfds[n].fd == (int)(long)user)
pollfds[n].events |= (int)(long)len;
break;
case LWS_CALLBACK_CLEAR_MODE_POLL_FD:
for (n = 0; n < count_pollfds; n++)
if (pollfds[n].fd == (int)(long)user)
pollfds[n].events &= ~(int)(long)len;
break;
default:
break;
}
return 0;
}
/*
* this is just an example of parsing handshake headers, you don't need this
* in your code unless you will filter allowing connections by the header
* content
*/
static void
dump_handshake_info(struct lws_tokens *lwst)
{
int n;
static const char *token_names[] = {
[WSI_TOKEN_GET_URI] = "GET URI",
[WSI_TOKEN_HOST] = "Host",
[WSI_TOKEN_CONNECTION] = "Connection",
[WSI_TOKEN_KEY1] = "key 1",
[WSI_TOKEN_KEY2] = "key 2",
[WSI_TOKEN_PROTOCOL] = "Protocol",
[WSI_TOKEN_UPGRADE] = "Upgrade",
[WSI_TOKEN_ORIGIN] = "Origin",
[WSI_TOKEN_DRAFT] = "Draft",
[WSI_TOKEN_CHALLENGE] = "Challenge",
/* new for 04 */
[WSI_TOKEN_KEY] = "Key",
[WSI_TOKEN_VERSION] = "Version",
[WSI_TOKEN_SWORIGIN] = "Sworigin",
/* new for 05 */
[WSI_TOKEN_EXTENSIONS] = "Extensions",
/* client receives these */
[WSI_TOKEN_ACCEPT] = "Accept",
[WSI_TOKEN_NONCE] = "Nonce",
[WSI_TOKEN_HTTP] = "Http",
[WSI_TOKEN_MUXURL] = "MuxURL",
};
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
if (lwst[n].token == NULL)
continue;
fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
}
}
/* dumb_increment protocol */
/*
* one of these is auto-created for each connection and a pointer to the
* appropriate instance is passed to the callback in the user parameter
*
* for this example protocol we use it to individualize the count for each
* connection.
*/
struct per_session_data__dumb_increment {
int number;
};
static int
callback_dumb_increment(struct libwebsocket_context * this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
int n;
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 512 +
LWS_SEND_BUFFER_POST_PADDING];
unsigned char *p = &buf[LWS_SEND_BUFFER_PRE_PADDING];
struct per_session_data__dumb_increment *pss = user;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
pss->number = 0;
break;
/*
* in this protocol, we just use the broadcast action as the chance to
* send our own connection-specific data and ignore the broadcast info
* that is available in the 'in' parameter
*/
case LWS_CALLBACK_BROADCAST:
n = sprintf((char *)p, "%d", pss->number++);
n = libwebsocket_write(wsi, p, n, LWS_WRITE_TEXT);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
return 1;
}
break;
case LWS_CALLBACK_RECEIVE:
fprintf(stderr, "rx %d\n", (int)len);
if (len < 6)
break;
if (strcmp(in, "reset\n") == 0)
pss->number = 0;
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}
return 0;
}
/* lws-mirror_protocol */
#define MAX_MESSAGE_QUEUE 64
struct per_session_data__lws_mirror {
struct libwebsocket *wsi;
int ringbuffer_tail;
};
struct a_message {
void *payload;
size_t len;
};
static struct a_message ringbuffer[MAX_MESSAGE_QUEUE];
static int ringbuffer_head;
static int
callback_lws_mirror(struct libwebsocket_context * this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
int n;
struct per_session_data__lws_mirror *pss = user;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
pss->ringbuffer_tail = ringbuffer_head;
pss->wsi = wsi;
libwebsocket_callback_on_writable(this, wsi);
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
if (pss->ringbuffer_tail != ringbuffer_head) {
n = libwebsocket_write(wsi, (unsigned char *)
ringbuffer[pss->ringbuffer_tail].payload +
LWS_SEND_BUFFER_PRE_PADDING,
ringbuffer[pss->ringbuffer_tail].len,
LWS_WRITE_TEXT);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
exit(1);
}
if (pss->ringbuffer_tail == (MAX_MESSAGE_QUEUE - 1))
pss->ringbuffer_tail = 0;
else
pss->ringbuffer_tail++;
if (((ringbuffer_head - pss->ringbuffer_tail) %
MAX_MESSAGE_QUEUE) < (MAX_MESSAGE_QUEUE - 15))
libwebsocket_rx_flow_control(wsi, 1);
libwebsocket_callback_on_writable(this, wsi);
}
break;
case LWS_CALLBACK_BROADCAST:
n = libwebsocket_write(wsi, in, len, LWS_WRITE_TEXT);
if (n < 0)
fprintf(stderr, "mirror write failed\n");
break;
case LWS_CALLBACK_RECEIVE:
if (ringbuffer[ringbuffer_head].payload)
free(ringbuffer[ringbuffer_head].payload);
ringbuffer[ringbuffer_head].payload =
malloc(LWS_SEND_BUFFER_PRE_PADDING + len +
LWS_SEND_BUFFER_POST_PADDING);
ringbuffer[ringbuffer_head].len = len;
memcpy((char *)ringbuffer[ringbuffer_head].payload +
LWS_SEND_BUFFER_PRE_PADDING, in, len);
if (ringbuffer_head == (MAX_MESSAGE_QUEUE - 1))
ringbuffer_head = 0;
else
ringbuffer_head++;
if (((ringbuffer_head - pss->ringbuffer_tail) %
MAX_MESSAGE_QUEUE) > (MAX_MESSAGE_QUEUE - 10))
libwebsocket_rx_flow_control(wsi, 0);
libwebsocket_callback_on_writable_all_protocol(
libwebsockets_get_protocol(wsi));
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}
return 0;
}
/* list of supported protocols and callbacks */
static struct libwebsocket_protocols protocols[] = {
/* first protocol must always be HTTP handler */
{
"http-only", /* name */
callback_http, /* callback */
0 /* per_session_data_size */
},
{
"dumb-increment-protocol",
callback_dumb_increment,
sizeof(struct per_session_data__dumb_increment),
},
{
"lws-mirror-protocol",
callback_lws_mirror,
sizeof(struct per_session_data__lws_mirror)
},
{
NULL, NULL, 0 /* End of list */
}
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p' },
{ "ssl", no_argument, NULL, 's' },
{ "killmask", no_argument, NULL, 'k' },
{ "interface", required_argument, NULL, 'i' },
{ NULL, 0, 0, 0 }
};
int main(int argc, char **argv)
{
int n = 0;
const char *cert_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
const char *key_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1024 +
LWS_SEND_BUFFER_POST_PADDING];
int port = 7681;
int use_ssl = 0;
struct libwebsocket_context *context;
int opts = 0;
unsigned int oldus = 0;
char interface_name[128] = "";
const char *interface_ptr = NULL;
fprintf(stderr, "libwebsockets test server with external poll()\n"
"(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
"licensed under LGPL2.1\n");
while (n >= 0) {
n = getopt_long(argc, argv, "i:khsp:", options, NULL);
if (n < 0)
continue;
switch (n) {
case 's':
use_ssl = 1;
break;
case 'k':
opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
break;
case 'p':
port = atoi(optarg);
break;
case 'i':
strncpy(interface_name, optarg, sizeof interface_name);
interface_name[(sizeof interface_name) - 1] = '\0';
interface_ptr = interface_name;
break;
case 'h':
fprintf(stderr, "Usage: test-server "
"[--port=<p>] [--ssl]\n");
exit(1);
}
}
if (!use_ssl)
cert_path = key_path = NULL;
context = libwebsocket_create_context(port, interface_ptr, protocols,
libwebsocket_internal_extensions,
cert_path, key_path, -1, -1, opts);
if (context == NULL) {
fprintf(stderr, "libwebsocket init failed\n");
return -1;
}
buf[LWS_SEND_BUFFER_PRE_PADDING] = 'x';
/*
* This is an example of an existing application's explicit poll()
* loop that libwebsockets can integrate with.
*/
while (1) {
struct timeval tv;
/*
* this represents an existing server's single poll action
* which also includes libwebsocket sockets
*/
n = poll(pollfds, count_pollfds, 25);
if (n < 0)
goto done;
if (n)
for (n = 0; n < count_pollfds; n++)
if (pollfds[n].revents)
/*
* returns immediately if the fd does not
* match anything under libwebsockets
* control
*/
if (libwebsocket_service_fd(context,
&pollfds[n]))
goto done;
/* do our broadcast periodically */
gettimeofday(&tv, NULL);
/*
* This broadcasts to all dumb-increment-protocol connections
* at 20Hz.
*
* We're just sending a character 'x', in these examples the
* callbacks send their own per-connection content.
*
* You have to send something with nonzero length to get the
* callback actions delivered.
*
* We take care of pre-and-post padding allocation.
*/
if (((unsigned int)tv.tv_usec - oldus) > 50000) {
libwebsockets_broadcast(
&protocols[PROTOCOL_DUMB_INCREMENT],
&buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
oldus = tv.tv_usec;
}
}
done:
libwebsocket_context_destroy(context);
return 0;
}

551
libs/libwebsockets/test-server/test-server.c Normal file
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@ -0,0 +1,551 @@
/*
* libwebsockets-test-server - libwebsockets test implementation
*
* Copyright (C) 2010-2011 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/time.h>
#include "../lib/libwebsockets.h"
static int close_testing;
/*
* This demo server shows how to use libwebsockets for one or more
* websocket protocols in the same server
*
* It defines the following websocket protocols:
*
* dumb-increment-protocol: once the socket is opened, an incrementing
* ascii string is sent down it every 50ms.
* If you send "reset\n" on the websocket, then
* the incrementing number is reset to 0.
*
* lws-mirror-protocol: copies any received packet to every connection also
* using this protocol, including the sender
*/
enum demo_protocols {
/* always first */
PROTOCOL_HTTP = 0,
PROTOCOL_DUMB_INCREMENT,
PROTOCOL_LWS_MIRROR,
/* always last */
DEMO_PROTOCOL_COUNT
};
#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
/* this protocol server (always the first one) just knows how to do HTTP */
static int callback_http(struct libwebsocket_context *context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason, void *user,
void *in, size_t len)
{
char client_name[128];
char client_ip[128];
switch (reason) {
case LWS_CALLBACK_HTTP:
fprintf(stderr, "serving HTTP URI %s\n", (char *)in);
if (in && strcmp(in, "/favicon.ico") == 0) {
if (libwebsockets_serve_http_file(wsi,
LOCAL_RESOURCE_PATH"/favicon.ico", "image/x-icon"))
fprintf(stderr, "Failed to send favicon\n");
break;
}
/* send the script... when it runs it'll start websockets */
if (libwebsockets_serve_http_file(wsi,
LOCAL_RESOURCE_PATH"/test.html", "text/html"))
fprintf(stderr, "Failed to send HTTP file\n");
break;
/*
* callback for confirming to continue with client IP appear in
* protocol 0 callback since no websocket protocol has been agreed
* yet. You can just ignore this if you won't filter on client IP
* since the default uhandled callback return is 0 meaning let the
* connection continue.
*/
case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
libwebsockets_get_peer_addresses((int)(long)user, client_name,
sizeof(client_name), client_ip, sizeof(client_ip));
fprintf(stderr, "Received network connect from %s (%s)\n",
client_name, client_ip);
/* if we returned non-zero from here, we kill the connection */
break;
default:
break;
}
return 0;
}
/*
* this is just an example of parsing handshake headers, you don't need this
* in your code unless you will filter allowing connections by the header
* content
*/
static void
dump_handshake_info(struct lws_tokens *lwst)
{
int n;
static const char *token_names[WSI_TOKEN_COUNT] = {
/*[WSI_TOKEN_GET_URI] =*/ "GET URI",
/*[WSI_TOKEN_HOST] =*/ "Host",
/*[WSI_TOKEN_CONNECTION] =*/ "Connection",
/*[WSI_TOKEN_KEY1] =*/ "key 1",
/*[WSI_TOKEN_KEY2] =*/ "key 2",
/*[WSI_TOKEN_PROTOCOL] =*/ "Protocol",
/*[WSI_TOKEN_UPGRADE] =*/ "Upgrade",
/*[WSI_TOKEN_ORIGIN] =*/ "Origin",
/*[WSI_TOKEN_DRAFT] =*/ "Draft",
/*[WSI_TOKEN_CHALLENGE] =*/ "Challenge",
/* new for 04 */
/*[WSI_TOKEN_KEY] =*/ "Key",
/*[WSI_TOKEN_VERSION] =*/ "Version",
/*[WSI_TOKEN_SWORIGIN] =*/ "Sworigin",
/* new for 05 */
/*[WSI_TOKEN_EXTENSIONS] =*/ "Extensions",
/* client receives these */
/*[WSI_TOKEN_ACCEPT] =*/ "Accept",
/*[WSI_TOKEN_NONCE] =*/ "Nonce",
/*[WSI_TOKEN_HTTP] =*/ "Http",
/*[WSI_TOKEN_MUXURL] =*/ "MuxURL",
};
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
if (lwst[n].token == NULL)
continue;
fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
}
}
/* dumb_increment protocol */
/*
* one of these is auto-created for each connection and a pointer to the
* appropriate instance is passed to the callback in the user parameter
*
* for this example protocol we use it to individualize the count for each
* connection.
*/
struct per_session_data__dumb_increment {
int number;
};
static int
callback_dumb_increment(struct libwebsocket_context *context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
int n;
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 512 +
LWS_SEND_BUFFER_POST_PADDING];
unsigned char *p = &buf[LWS_SEND_BUFFER_PRE_PADDING];
struct per_session_data__dumb_increment *pss = user;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
fprintf(stderr, "callback_dumb_increment: "
"LWS_CALLBACK_ESTABLISHED\n");
pss->number = 0;
break;
/*
* in this protocol, we just use the broadcast action as the chance to
* send our own connection-specific data and ignore the broadcast info
* that is available in the 'in' parameter
*/
case LWS_CALLBACK_BROADCAST:
n = sprintf((char *)p, "%d", pss->number++);
n = libwebsocket_write(wsi, p, n, LWS_WRITE_TEXT);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
return 1;
}
if (close_testing && pss->number == 50) {
fprintf(stderr, "close tesing limit, closing\n");
libwebsocket_close_and_free_session(context, wsi,
LWS_CLOSE_STATUS_NORMAL);
}
break;
case LWS_CALLBACK_RECEIVE:
fprintf(stderr, "rx %d\n", (int)len);
if (len < 6)
break;
if (strcmp(in, "reset\n") == 0)
pss->number = 0;
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}
return 0;
}
/* lws-mirror_protocol */
#define MAX_MESSAGE_QUEUE 64
struct per_session_data__lws_mirror {
struct libwebsocket *wsi;
int ringbuffer_tail;
};
struct a_message {
void *payload;
size_t len;
};
static struct a_message ringbuffer[MAX_MESSAGE_QUEUE];
static int ringbuffer_head;
static int
callback_lws_mirror(struct libwebsocket_context *context,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
void *user, void *in, size_t len)
{
int n;
struct per_session_data__lws_mirror *pss = user;
switch (reason) {
case LWS_CALLBACK_ESTABLISHED:
fprintf(stderr, "callback_lws_mirror: "
"LWS_CALLBACK_ESTABLISHED\n");
pss->ringbuffer_tail = ringbuffer_head;
pss->wsi = wsi;
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
if (close_testing)
break;
if (pss->ringbuffer_tail != ringbuffer_head) {
n = libwebsocket_write(wsi, (unsigned char *)
ringbuffer[pss->ringbuffer_tail].payload +
LWS_SEND_BUFFER_PRE_PADDING,
ringbuffer[pss->ringbuffer_tail].len,
LWS_WRITE_TEXT);
if (n < 0) {
fprintf(stderr, "ERROR writing to socket");
exit(1);
}
if (pss->ringbuffer_tail == (MAX_MESSAGE_QUEUE - 1))
pss->ringbuffer_tail = 0;
else
pss->ringbuffer_tail++;
if (((ringbuffer_head - pss->ringbuffer_tail) %
MAX_MESSAGE_QUEUE) < (MAX_MESSAGE_QUEUE - 15))
libwebsocket_rx_flow_control(wsi, 1);
libwebsocket_callback_on_writable(context, wsi);
}
break;
case LWS_CALLBACK_BROADCAST:
n = libwebsocket_write(wsi, in, len, LWS_WRITE_TEXT);
if (n < 0)
fprintf(stderr, "mirror write failed\n");
break;
case LWS_CALLBACK_RECEIVE:
if (ringbuffer[ringbuffer_head].payload)
free(ringbuffer[ringbuffer_head].payload);
ringbuffer[ringbuffer_head].payload =
malloc(LWS_SEND_BUFFER_PRE_PADDING + len +
LWS_SEND_BUFFER_POST_PADDING);
ringbuffer[ringbuffer_head].len = len;
memcpy((char *)ringbuffer[ringbuffer_head].payload +
LWS_SEND_BUFFER_PRE_PADDING, in, len);
if (ringbuffer_head == (MAX_MESSAGE_QUEUE - 1))
ringbuffer_head = 0;
else
ringbuffer_head++;
if (((ringbuffer_head - pss->ringbuffer_tail) %
MAX_MESSAGE_QUEUE) > (MAX_MESSAGE_QUEUE - 10))
libwebsocket_rx_flow_control(wsi, 0);
libwebsocket_callback_on_writable_all_protocol(
libwebsockets_get_protocol(wsi));
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}
return 0;
}
/* list of supported protocols and callbacks */
static struct libwebsocket_protocols protocols[] = {
/* first protocol must always be HTTP handler */
{
"http-only", /* name */
callback_http, /* callback */
0 /* per_session_data_size */
},
{
"dumb-increment-protocol",
callback_dumb_increment,
sizeof(struct per_session_data__dumb_increment),
},
{
"lws-mirror-protocol",
callback_lws_mirror,
sizeof(struct per_session_data__lws_mirror)
},
{
NULL, NULL, 0 /* End of list */
}
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p' },
{ "ssl", no_argument, NULL, 's' },
{ "killmask", no_argument, NULL, 'k' },
{ "interface", required_argument, NULL, 'i' },
{ "closetest", no_argument, NULL, 'c' },
{ NULL, 0, 0, 0 }
};
int main(int argc, char **argv)
{
int n = 0;
const char *cert_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.pem";
const char *key_path =
LOCAL_RESOURCE_PATH"/libwebsockets-test-server.key.pem";
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1024 +
LWS_SEND_BUFFER_POST_PADDING];
int port = 7681;
int use_ssl = 0;
struct libwebsocket_context *context;
int opts = 0;
char interface_name[128] = "";
const char *interface = NULL;
#ifdef LWS_NO_FORK
unsigned int oldus = 0;
#endif
fprintf(stderr, "libwebsockets test server\n"
"(C) Copyright 2010-2011 Andy Green <andy@warmcat.com> "
"licensed under LGPL2.1\n");
while (n >= 0) {
n = getopt_long(argc, argv, "ci:khsp:", options, NULL);
if (n < 0)
continue;
switch (n) {
case 's':
use_ssl = 1;
break;
case 'k':
opts = LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK;
break;
case 'p':
port = atoi(optarg);
break;
case 'i':
strncpy(interface_name, optarg, sizeof interface_name);
interface_name[(sizeof interface_name) - 1] = '\0';
interface = interface_name;
break;
case 'c':
close_testing = 1;
fprintf(stderr, " Close testing mode -- closes on "
"client after 50 dumb increments"
"and suppresses lws_mirror spam\n");
break;
case 'h':
fprintf(stderr, "Usage: test-server "
"[--port=<p>] [--ssl]\n");
exit(1);
}
}
if (!use_ssl)
cert_path = key_path = NULL;
context = libwebsocket_create_context(port, interface, protocols,
libwebsocket_internal_extensions,
cert_path, key_path, -1, -1, opts);
if (context == NULL) {
fprintf(stderr, "libwebsocket init failed\n");
return -1;
}
buf[LWS_SEND_BUFFER_PRE_PADDING] = 'x';
#ifdef LWS_NO_FORK
/*
* This example shows how to work with no forked service loop
*/
fprintf(stderr, " Using no-fork service loop\n");
n = 0;
while (n >= 0) {
struct timeval tv;
gettimeofday(&tv, NULL);
/*
* This broadcasts to all dumb-increment-protocol connections
* at 20Hz.
*
* We're just sending a character 'x', in these examples the
* callbacks send their own per-connection content.
*
* You have to send something with nonzero length to get the
* callback actions delivered.
*
* We take care of pre-and-post padding allocation.
*/
if (((unsigned int)tv.tv_usec - oldus) > 50000) {
libwebsockets_broadcast(
&protocols[PROTOCOL_DUMB_INCREMENT],
&buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
oldus = tv.tv_usec;
}
/*
* This example server does not fork or create a thread for
* websocket service, it all runs in this single loop. So,
* we have to give the websockets an opportunity to service
* "manually".
*
* If no socket is needing service, the call below returns
* immediately and quickly. Negative return means we are
* in process of closing
*/
n = libwebsocket_service(context, 50);
}
#else
/*
* This example shows how to work with the forked websocket service loop
*/
fprintf(stderr, " Using forked service loop\n");
/*
* This forks the websocket service action into a subprocess so we
* don't have to take care about it.
*/
n = libwebsockets_fork_service_loop(context);
if (n < 0) {
fprintf(stderr, "Unable to fork service loop %d\n", n);
return 1;
}
while (1) {
usleep(50000);
/*
* This broadcasts to all dumb-increment-protocol connections
* at 20Hz.
*
* We're just sending a character 'x', in these examples the
* callbacks send their own per-connection content.
*
* You have to send something with nonzero length to get the
* callback actions delivered.
*
* We take care of pre-and-post padding allocation.
*/
libwebsockets_broadcast(&protocols[PROTOCOL_DUMB_INCREMENT],
&buf[LWS_SEND_BUFFER_PRE_PADDING], 1);
}
#endif
libwebsocket_context_destroy(context);
return 0;
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset=utf-8 />
<title>Minimal Websocket test app</title>
</head>
<body>
<h3>Detected Browser: <div id=brow>...</div></h3>
<h2>libwebsockets "dumb-increment-protocol" test applet</h2>
The incrementing number is coming from the server and is individual for
each connection to the server... try opening a second browser window.
Click the button to send the server a websocket message to
reset the number.<br><br>
<table>
<tr>
<td align=center><input type=button id=offset value="Reset counter" onclick="reset();" ></td>
<td width=100 align=center><div id=number> </div></td>
<td id=wsdi_statustd align=center><div id=wsdi_status>Not initialized</div></td>
</tr>
</table>
<h2>libwebsockets "lws-mirror-protocol" test applet</h2>
Use the mouse to draw on the canvas below -- all other browser windows open
on this page see your drawing in realtime and you can see any of theirs as
well.
<p>
The lws-mirror protocol doesn't interpret what is being sent to it, it just
re-sends it to every other websocket it has a connection with using that
protocol, including the guy who sent the packet.
<p>libwebsockets-test-client spams circles on to this shared canvas when
run.</p>
<br><br>
<table>
<tr>
<td>Drawing color:
<select id="color" onchange="update_color();">
<option value=#000000>Black</option>
<option value=#0000ff>Blue</option>
<option value=#20ff20>Green</option>
<option value=#802020>Dark Red</option>
</select>
</td>
<td id=wslm_statustd align=center><div id=wslm_status>Not initialized</div></td>
</tr>
<tr>
<td colspan=2 width=500 align=center style="background-color: #e0e0e0;"><div id=wslm_drawing> </div></td>
</tr>
</table>
<script>
/* BrowserDetect came from http://www.quirksmode.org/js/detect.html */
var BrowserDetect = {
init: function () {
this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
this.version = this.searchVersion(navigator.userAgent)
|| this.searchVersion(navigator.appVersion)
|| "an unknown version";
this.OS = this.searchString(this.dataOS) || "an unknown OS";
},
searchString: function (data) {
for (var i=0;i<data.length;i++) {
var dataString = data[i].string;
var dataProp = data[i].prop;
this.versionSearchString = data[i].versionSearch || data[i].identity;
if (dataString) {
if (dataString.indexOf(data[i].subString) != -1)
return data[i].identity;
}
else if (dataProp)
return data[i].identity;
}
},
searchVersion: function (dataString) {
var index = dataString.indexOf(this.versionSearchString);
if (index == -1) return;
return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
},
dataBrowser: [
{
string: navigator.userAgent,
subString: "Chrome",
identity: "Chrome"
},
{ string: navigator.userAgent,
subString: "OmniWeb",
versionSearch: "OmniWeb/",
identity: "OmniWeb"
},
{
string: navigator.vendor,
subString: "Apple",
identity: "Safari",
versionSearch: "Version"
},
{
prop: window.opera,
identity: "Opera",
versionSearch: "Version"
},
{
string: navigator.vendor,
subString: "iCab",
identity: "iCab"
},
{
string: navigator.vendor,
subString: "KDE",
identity: "Konqueror"
},
{
string: navigator.userAgent,
subString: "Firefox",
identity: "Firefox"
},
{
string: navigator.vendor,
subString: "Camino",
identity: "Camino"
},
{ // for newer Netscapes (6+)
string: navigator.userAgent,
subString: "Netscape",
identity: "Netscape"
},
{
string: navigator.userAgent,
subString: "MSIE",
identity: "Explorer",
versionSearch: "MSIE"
},
{
string: navigator.userAgent,
subString: "Gecko",
identity: "Mozilla",
versionSearch: "rv"
},
{ // for older Netscapes (4-)
string: navigator.userAgent,
subString: "Mozilla",
identity: "Netscape",
versionSearch: "Mozilla"
}
],
dataOS : [
{
string: navigator.platform,
subString: "Win",
identity: "Windows"
},
{
string: navigator.platform,
subString: "Mac",
identity: "Mac"
},
{
string: navigator.userAgent,
subString: "iPhone",
identity: "iPhone/iPod"
},
{
string: navigator.platform,
subString: "Linux",
identity: "Linux"
}
]
};
BrowserDetect.init();
document.getElementById("brow").textContent = " " + BrowserDetect.browser + " "
+ BrowserDetect.version +" " + BrowserDetect.OS +" ";
var pos = 0;
function get_appropriate_ws_url()
{
var pcol;
var u = document.URL;
/*
* We open the websocket encrypted if this page came on an
* https:// url itself, otherwise unencrypted
*/
if (u.substring(0, 5) == "https") {
pcol = "wss://";
u = u.substr(8);
} else {
pcol = "ws://";
if (u.substring(0, 4) == "http")
u = u.substr(7);
}
u = u.split('/');
return pcol + u[0];
}
document.getElementById("number").textContent = get_appropriate_ws_url();
/* dumb increment protocol */
var socket_di;
if (BrowserDetect.browser == "Firefox" && BrowserDetect.version < 12) {
socket_di = new MozWebSocket(get_appropriate_ws_url(),
"dumb-increment-protocol");
} else {
socket_di = new WebSocket(get_appropriate_ws_url(),
"dumb-increment-protocol");
}
try {
socket_di.onopen = function() {
document.getElementById("wsdi_statustd").style.backgroundColor = "#40ff40";
document.getElementById("wsdi_status").textContent = " websocket connection opened ";
}
socket_di.onmessage =function got_packet(msg) {
document.getElementById("number").textContent = msg.data + "\n";
}
socket_di.onclose = function(){
document.getElementById("wsdi_statustd").style.backgroundColor = "#ff4040";
document.getElementById("wsdi_status").textContent = " websocket connection CLOSED ";
}
} catch(exception) {
alert('<p>Error' + exception);
}
function reset() {
socket_di.send("reset\n");
}
/* lws-mirror protocol */
var down = 0;
var no_last = 1;
var last_x = 0, last_y = 0;
var ctx;
var socket_lm;
var color = "#000000";
if (BrowserDetect.browser == "Firefox" && BrowserDetect.version < 12) {
socket_lm = new MozWebSocket(get_appropriate_ws_url(),
"lws-mirror-protocol");
} else {
socket_lm = new WebSocket(get_appropriate_ws_url(),
"lws-mirror-protocol");
}
try {
socket_lm.onopen = function() {
document.getElementById("wslm_statustd").style.backgroundColor = "#40ff40";
document.getElementById("wslm_status").textContent = " websocket connection opened ";
}
socket_lm.onmessage =function got_packet(msg) {
j = msg.data.split(';');
f = 0;
while (f < j.length - 1) {
i = j[f].split(' ');
if (i[0] == 'd') {
ctx.strokeStyle = i[1];
ctx.beginPath();
ctx.moveTo(+(i[2]), +(i[3]));
ctx.lineTo(+(i[4]), +(i[5]));
ctx.stroke();
}
if (i[0] == 'c') {
ctx.strokeStyle = i[1];
ctx.beginPath();
ctx.arc(+(i[2]), +(i[3]), +(i[4]), 0, Math.PI*2, true);
ctx.stroke();
}
f++;
}
}
socket_lm.onclose = function(){
document.getElementById("wslm_statustd").style.backgroundColor = "#ff4040";
document.getElementById("wslm_status").textContent = " websocket connection CLOSED ";
}
} catch(exception) {
alert('<p>Error' + exception);
}
var canvas = document.createElement('canvas');
canvas.height = 300;
canvas.width = 480;
ctx = canvas.getContext("2d");
document.getElementById('wslm_drawing').appendChild(canvas);
canvas.addEventListener('mousemove', ev_mousemove, false);
canvas.addEventListener('mousedown', ev_mousedown, false);
canvas.addEventListener('mouseup', ev_mouseup, false);
offsetX = offsetY = 0;
element = canvas;
if (element.offsetParent) {
do {
offsetX += element.offsetLeft;
offsetY += element.offsetTop;
} while ((element = element.offsetParent));
}
function update_color() {
color = document.getElementById("color").value;
}
function ev_mousedown (ev) {
down = 1;
}
function ev_mouseup(ev) {
down = 0;
no_last = 1;
}
function ev_mousemove (ev) {
var x, y;
if (ev.offsetX) {
x = ev.offsetX;
y = ev.offsetY;
} else {
x = ev.layerX - offsetX;
y = ev.layerY - offsetY;
}
if (!down)
return;
if (no_last) {
no_last = 0;
last_x = x;
last_y = y;
return;
}
socket_lm.send("d " + color + " " + last_x + " " + last_y + " " + x + ' ' + y + ';');
last_x = x;
last_y = y;
}
</script>
</body>
</html>

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<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>../win32helpers</AdditionalIncludeDirectories>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<AdditionalDependencies>ws2_32.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release static|Win32'">
<ClCompile>
<ExceptionHandling>false</ExceptionHandling>
<AdditionalIncludeDirectories>../win32helpers</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_CONSOLE</PreprocessorDefinitions>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
</ClCompile>
<Link>
<AdditionalDependencies>Ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release DLL|Win32'">
<ClCompile>
<ExceptionHandling>false</ExceptionHandling>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
<BufferSecurityCheck>false</BufferSecurityCheck>
<AdditionalIncludeDirectories>../win32helpers</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_CONSOLE;LWS_DLL</PreprocessorDefinitions>
</ClCompile>
</ItemDefinitionGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>

51
libs/libwebsockets/win32port/server/server.vcxproj.filters Normal file
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@ -0,0 +1,51 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="Source Files">
<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
</Filter>
<Filter Include="Header Files">
<UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
<Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
</Filter>
<Filter Include="Resource Files">
<UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
</Filter>
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\test-server\test-server.c">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="..\win32helpers\getopt.c">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="..\win32helpers\getopt_long.c">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="..\win32helpers\gettimeofday.c">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\win32helpers\getopt.h">
<Filter>Source Files</Filter>
</ClInclude>
<ClInclude Include="..\win32helpers\netdb.h">
<Filter>Source Files</Filter>
</ClInclude>
<ClInclude Include="..\win32helpers\strings.h">
<Filter>Source Files</Filter>
</ClInclude>
<ClInclude Include="..\win32helpers\unistd.h">
<Filter>Source Files</Filter>
</ClInclude>
<ClInclude Include="..\win32helpers\websock-w32.h">
<Filter>Source Files</Filter>
</ClInclude>
<ClInclude Include="..\win32helpers\gettimeofday.h">
<Filter>Source Files</Filter>
</ClInclude>
</ItemGroup>
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153
libs/libwebsockets/win32port/win32helpers/getopt.c Normal file
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@ -0,0 +1,153 @@
/* $NetBSD: getopt.c,v 1.16 1999/12/02 13:15:56 kleink Exp $ */
/*
* Copyright (c) 1987, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
#endif
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#define __P(x) x
#define _DIAGASSERT(x) assert(x)
#ifdef __weak_alias
__weak_alias(getopt,_getopt);
#endif
int opterr = 1, /* if error message should be printed */
optind = 1, /* index into parent argv vector */
optopt, /* character checked for validity */
optreset; /* reset getopt */
char *optarg; /* argument associated with option */
static char * _progname __P((char *));
int getopt_internal __P((int, char * const *, const char *));
static char *
_progname(nargv0)
char * nargv0;
{
char * tmp;
_DIAGASSERT(nargv0 != NULL);
tmp = strrchr(nargv0, '/');
if (tmp)
tmp++;
else
tmp = nargv0;
return(tmp);
}
#define BADCH (int)'?'
#define BADARG (int)':'
#define EMSG ""
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
getopt(nargc, nargv, ostr)
int nargc;
char * const nargv[];
const char *ostr;
{
static char *__progname = 0;
static char *place = EMSG; /* option letter processing */
char *oli; /* option letter list index */
__progname = __progname?__progname:_progname(*nargv);
_DIAGASSERT(nargv != NULL);
_DIAGASSERT(ostr != NULL);
if (optreset || !*place) { /* update scanning pointer */
optreset = 0;
if (optind >= nargc || *(place = nargv[optind]) != '-') {
place = EMSG;
return (-1);
}
if (place[1] && *++place == '-' /* found "--" */
&& place[1] == '\0') {
++optind;
place = EMSG;
return (-1);
}
} /* option letter okay? */
if ((optopt = (int)*place++) == (int)':' ||
!(oli = strchr(ostr, optopt))) {
/*
* if the user didn't specify '-' as an option,
* assume it means -1.
*/
if (optopt == (int)'-')
return (-1);
if (!*place)
++optind;
if (opterr && *ostr != ':')
(void)fprintf(stderr,
"%s: illegal option -- %c\n", __progname, optopt);
return (BADCH);
}
if (*++oli != ':') { /* don't need argument */
optarg = NULL;
if (!*place)
++optind;
}
else { /* need an argument */
if (*place) /* no white space */
optarg = place;
else if (nargc <= ++optind) { /* no arg */
place = EMSG;
if (*ostr == ':')
return (BADARG);
if (opterr)
(void)fprintf(stderr,
"%s: option requires an argument -- %c\n",
__progname, optopt);
return (BADCH);
}
else /* white space */
optarg = nargv[optind];
place = EMSG;
++optind;
}
return (optopt); /* dump back option letter */
}

33
libs/libwebsockets/win32port/win32helpers/getopt.h Normal file
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@ -0,0 +1,33 @@
#ifndef __GETOPT_H__
#define __GETOPT_H__
#ifdef __cplusplus
extern "C" {
#endif
extern int opterr; /* if error message should be printed */
extern int optind; /* index into parent argv vector */
extern int optopt; /* character checked for validity */
extern int optreset; /* reset getopt */
extern char *optarg; /* argument associated with option */
struct option
{
const char *name;
int has_arg;
int *flag;
int val;
};
#define no_argument 0
#define required_argument 1
#define optional_argument 2
int getopt(int, char**, char*);
int getopt_long(int, char**, char*, struct option*, int*);
#ifdef __cplusplus
}
#endif
#endif /* __GETOPT_H__ */

237
libs/libwebsockets/win32port/win32helpers/getopt_long.c Normal file
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@ -0,0 +1,237 @@
/*
* Copyright (c) 1987, 1993, 1994, 1996
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "getopt.h"
extern int opterr; /* if error message should be printed */
extern int optind; /* index into parent argv vector */
extern int optopt; /* character checked for validity */
extern int optreset; /* reset getopt */
extern char *optarg; /* argument associated with option */
#define __P(x) x
#define _DIAGASSERT(x) assert(x)
static char * __progname __P((char *));
int getopt_internal __P((int, char * const *, const char *));
static char *
__progname(nargv0)
char * nargv0;
{
char * tmp;
_DIAGASSERT(nargv0 != NULL);
tmp = strrchr(nargv0, '/');
if (tmp)
tmp++;
else
tmp = nargv0;
return(tmp);
}
#define BADCH (int)'?'
#define BADARG (int)':'
#define EMSG ""
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
getopt_internal(nargc, nargv, ostr)
int nargc;
char * const *nargv;
const char *ostr;
{
static char *place = EMSG; /* option letter processing */
char *oli; /* option letter list index */
_DIAGASSERT(nargv != NULL);
_DIAGASSERT(ostr != NULL);
if (optreset || !*place) { /* update scanning pointer */
optreset = 0;
if (optind >= nargc || *(place = nargv[optind]) != '-') {
place = EMSG;
return (-1);
}
if (place[1] && *++place == '-') { /* found "--" */
/* ++optind; */
place = EMSG;
return (-2);
}
} /* option letter okay? */
if ((optopt = (int)*place++) == (int)':' ||
!(oli = strchr(ostr, optopt))) {
/*
* if the user didn't specify '-' as an option,
* assume it means -1.
*/
if (optopt == (int)'-')
return (-1);
if (!*place)
++optind;
if (opterr && *ostr != ':')
(void)fprintf(stderr,
"%s: illegal option -- %c\n", __progname(nargv[0]), optopt);
return (BADCH);
}
if (*++oli != ':') { /* don't need argument */
optarg = NULL;
if (!*place)
++optind;
} else { /* need an argument */
if (*place) /* no white space */
optarg = place;
else if (nargc <= ++optind) { /* no arg */
place = EMSG;
if ((opterr) && (*ostr != ':'))
(void)fprintf(stderr,
"%s: option requires an argument -- %c\n",
__progname(nargv[0]), optopt);
return (BADARG);
} else /* white space */
optarg = nargv[optind];
place = EMSG;
++optind;
}
return (optopt); /* dump back option letter */
}
#if 0
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
getopt2(nargc, nargv, ostr)
int nargc;
char * const *nargv;
const char *ostr;
{
int retval;
if ((retval = getopt_internal(nargc, nargv, ostr)) == -2) {
retval = -1;
++optind;
}
return(retval);
}
#endif
/*
* getopt_long --
* Parse argc/argv argument vector.
*/
int
getopt_long(nargc, nargv, options, long_options, index)
int nargc;
char ** nargv;
char * options;
struct option * long_options;
int * index;
{
int retval;
_DIAGASSERT(nargv != NULL);
_DIAGASSERT(options != NULL);
_DIAGASSERT(long_options != NULL);
/* index may be NULL */
if ((retval = getopt_internal(nargc, nargv, options)) == -2) {
char *current_argv = nargv[optind++] + 2, *has_equal;
int i, current_argv_len, match = -1;
if (*current_argv == '\0') {
return(-1);
}
if ((has_equal = strchr(current_argv, '=')) != NULL) {
current_argv_len = has_equal - current_argv;
has_equal++;
} else
current_argv_len = strlen(current_argv);
for (i = 0; long_options[i].name; i++) {
if (strncmp(current_argv, long_options[i].name, current_argv_len))
continue;
if (strlen(long_options[i].name) == (unsigned)current_argv_len) {
match = i;
break;
}
if (match == -1)
match = i;
}
if (match != -1) {
if (long_options[match].has_arg == required_argument ||
long_options[match].has_arg == optional_argument) {
if (has_equal)
optarg = has_equal;
else
optarg = nargv[optind++];
}
if ((long_options[match].has_arg == required_argument)
&& (optarg == NULL)) {
/*
* Missing argument, leading :
* indicates no error should be generated
*/
if ((opterr) && (*options != ':'))
(void)fprintf(stderr,
"%s: option requires an argument -- %s\n",
__progname(nargv[0]), current_argv);
return (BADARG);
}
} else { /* No matching argument */
if ((opterr) && (*options != ':'))
(void)fprintf(stderr,
"%s: illegal option -- %s\n", __progname(nargv[0]), current_argv);
return (BADCH);
}
if (long_options[match].flag) {
*long_options[match].flag = long_options[match].val;
retval = 0;
} else
retval = long_options[match].val;
if (index)
*index = match;
}
return(retval);
}

48
libs/libwebsockets/win32port/win32helpers/gettimeofday.c Normal file
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@ -0,0 +1,48 @@
#include < time.h >
#include <windows.h> //I've ommited context line.
#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64
#else
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
#endif
struct timezone
{
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
int gettimeofday(struct timeval *tv, struct timezone *tz)
{
FILETIME ft;
unsigned __int64 tmpres = 0;
static int tzflag;
if (NULL != tv)
{
GetSystemTimeAsFileTime(&ft);
tmpres |= ft.dwHighDateTime;
tmpres <<= 32;
tmpres |= ft.dwLowDateTime;
/*converting file time to unix epoch*/
tmpres -= DELTA_EPOCH_IN_MICROSECS;
tmpres /= 10; /*convert into microseconds*/
tv->tv_sec = (long)(tmpres / 1000000UL);
tv->tv_usec = (long)(tmpres % 1000000UL);
}
if (NULL != tz)
{
if (!tzflag)
{
_tzset();
tzflag++;
}
tz->tz_minuteswest = _timezone / 60;
tz->tz_dsttime = _daylight;
}
return 0;
}

28
libs/libwebsockets/win32port/win32helpers/gettimeofday.h Normal file
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@ -0,0 +1,28 @@
#ifndef _GET_TIME_OF_DAY_H
#define _GET_TIME_OF_DAY_H
#ifdef __MINGW64__
#else
#ifdef __MINGW32__
#else
#include < time.h >
#endif
#endif
#include <windows.h> //I've ommited context line.
#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64
#else
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
#endif
struct timezone
{
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
int gettimeofday(struct timeval *tv, struct timezone *tz);
#endif

1
libs/libwebsockets/win32port/win32helpers/netdb.h Normal file
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@ -0,0 +1 @@
// Left blank for win32

0
libs/libwebsockets/win32port/win32helpers/strings.h Normal file
View File

1
libs/libwebsockets/win32port/win32helpers/sys/time.h Normal file
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@ -0,0 +1 @@
// left blank

0
libs/libwebsockets/win32port/win32helpers/unistd.h Normal file
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104
libs/libwebsockets/win32port/win32helpers/websock-w32.c Normal file
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@ -0,0 +1,104 @@
#define FD_SETSIZE 256
#ifdef __MINGW32__
#include <winsock2.h>
#else
#ifdef __MINGW64__
#include <winsock2.h>
#else
#include <WinSock2.h>
#endif
#endif
#include <stdlib.h>
#include <errno.h>
#include "websock-w32.h"
PFNWSAPOLL poll = NULL;
INT WSAAPI emulated_poll(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout)
{
fd_set readfds;
fd_set writefds;
struct timeval tv;
struct timeval *ptv = &tv;
SOCKET max_socket = 0;
ULONG n = 0;
int waiting;
int pending = 0;
WSAPOLLFD * poll_fd = fdarray;
if (NULL == fdarray) {
errno = EFAULT;
return -1;
}
FD_ZERO(&readfds);
FD_ZERO(&writefds);
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
if (timeout < 0)
ptv = NULL;
while (n < nfds) {
poll_fd->revents = 0;
if (poll_fd->fd < 0 || !poll_fd->events)
goto skip1;
if (max_socket < poll_fd->fd)
max_socket = poll_fd->fd;
if (poll_fd->events & POLLIN)
FD_SET(poll_fd->fd, &readfds);
if (poll_fd->events & POLLOUT)
FD_SET(poll_fd->fd, &writefds);
skip1:
poll_fd++;
n++;
}
waiting = select((int)max_socket + 1, &readfds, &writefds, NULL, ptv);
if (waiting <= 0)
return waiting;
poll_fd = fdarray;
while (waiting && nfds--) {
if (!poll_fd->events)
goto skip2;
if (poll_fd->fd <= 0) {
poll_fd->revents = POLLNVAL;
goto skip2;
}
if (FD_ISSET(poll_fd->fd, &readfds)) {
/* defer POLLHUP / error detect to false read attempt */
poll_fd->revents |= POLLIN;
waiting--;
}
if (FD_ISSET(poll_fd->fd, &writefds)) {
poll_fd->revents |= poll_fd->events & POLLOUT;
waiting--;
}
if (poll_fd->revents)
pending++;
skip2:
poll_fd++;
}
return pending;
}

64
libs/libwebsockets/win32port/win32helpers/websock-w32.h Normal file
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@ -0,0 +1,64 @@
#ifndef __WEB_SOCK_W32_H__
#define __WEB_SOCK_W32_H__
// Windows uses _DEBUG and NDEBUG
#ifdef _DEBUG
#undef DEBUG
#define DEBUG 1
#endif
#pragma warning(disable : 4996)
#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
#define MSG_NOSIGNAL 0
#define SHUT_RDWR SD_BOTH
#define SOL_TCP IPPROTO_TCP
#define random rand
#define usleep _sleep
#ifdef __MINGW64__
#define DEF_POLL_STUFF
#endif
#ifdef __MINGW32__
#define DEF_POLL_STUFF
#endif
#ifdef DEF_POLL_STUFF
#include <winsock2.h>
typedef struct pollfd {
SOCKET fd;
short events;
short revents;
} WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD;
#define POLLIN 0x0001 /* any readable data available */
#define POLLOUT 0x0004 /* file descriptor is writeable */
#define POLLERR 0x0008 /* some poll error occurred */
#define POLLHUP 0x0010 /* file descriptor was "hung up" */
#define POLLNVAL 0x0020 /* requested events "invalid" */
#endif
typedef INT (WSAAPI *PFNWSAPOLL)(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout);
extern PFNWSAPOLL poll;
extern INT WSAAPI emulated_poll(LPWSAPOLLFD fdarray, ULONG nfds, INT timeout);
/* override configure because we are not using Makefiles */
#define LWS_NO_FORK
/* windows can't cope with this idea, needs assets in cwd */
#ifdef INSTALL_DATADIR
#undef INSTALL_DATADIR
#endif
#define INSTALL_DATADIR "."
#endif

100
libs/libwebsockets/win32port/win32port.sln Normal file
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@ -0,0 +1,100 @@

Microsoft Visual Studio Solution File, Format Version 11.00
# Visual C++ Express 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server", "server\server.vcxproj", "{E585B64F-9365-4C58-9EF8-56393EB27F8B}"
ProjectSection(ProjectDependencies) = postProject
{332BF17E-FD30-4363-975A-AA731A827B4F} = {332BF17E-FD30-4363-975A-AA731A827B4F}
EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libwebsocketswin32", "libwebsocketswin32\libwebsocketswin32.vcxproj", "{332BF17E-FD30-4363-975A-AA731A827B4F}"
ProjectSection(ProjectDependencies) = postProject
{4156FC56-8443-2973-4FE2-A0BB2C621525} = {4156FC56-8443-2973-4FE2-A0BB2C621525}
EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "client", "client\client.vcxproj", "{6265650C-4799-451C-A687-94DE48759A8B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ZLib", "zlib\ZLib.vcxproj", "{4156FC56-8443-2973-4FE2-A0BB2C621525}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug static|Win32 = Debug static|Win32
Debug static|x64 = Debug static|x64
Debug|Win32 = Debug|Win32
Debug|x64 = Debug|x64
Release DLL|Win32 = Release DLL|Win32
Release DLL|x64 = Release DLL|x64
Release static|Win32 = Release static|Win32
Release static|x64 = Release static|x64
Release|Win32 = Release|Win32
Release|x64 = Release|x64
EndGlobalSection
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/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-2007 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include "zutil.h"
#define local static
local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2);
#define BASE 65521UL /* largest prime smaller than 65536 */
#define NMAX 5552
/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
#define DO16(buf) DO8(buf,0); DO8(buf,8);
/* use NO_DIVIDE if your processor does not do division in hardware */
#ifdef NO_DIVIDE
# define MOD(a) \
do { \
if (a >= (BASE << 16)) a -= (BASE << 16); \
if (a >= (BASE << 15)) a -= (BASE << 15); \
if (a >= (BASE << 14)) a -= (BASE << 14); \
if (a >= (BASE << 13)) a -= (BASE << 13); \
if (a >= (BASE << 12)) a -= (BASE << 12); \
if (a >= (BASE << 11)) a -= (BASE << 11); \
if (a >= (BASE << 10)) a -= (BASE << 10); \
if (a >= (BASE << 9)) a -= (BASE << 9); \
if (a >= (BASE << 8)) a -= (BASE << 8); \
if (a >= (BASE << 7)) a -= (BASE << 7); \
if (a >= (BASE << 6)) a -= (BASE << 6); \
if (a >= (BASE << 5)) a -= (BASE << 5); \
if (a >= (BASE << 4)) a -= (BASE << 4); \
if (a >= (BASE << 3)) a -= (BASE << 3); \
if (a >= (BASE << 2)) a -= (BASE << 2); \
if (a >= (BASE << 1)) a -= (BASE << 1); \
if (a >= BASE) a -= BASE; \
} while (0)
# define MOD4(a) \
do { \
if (a >= (BASE << 4)) a -= (BASE << 4); \
if (a >= (BASE << 3)) a -= (BASE << 3); \
if (a >= (BASE << 2)) a -= (BASE << 2); \
if (a >= (BASE << 1)) a -= (BASE << 1); \
if (a >= BASE) a -= BASE; \
} while (0)
#else
# define MOD(a) a %= BASE
# define MOD4(a) a %= BASE
#endif
/* ========================================================================= */
uLong ZEXPORT adler32(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
{
unsigned long sum2;
unsigned n;
/* split Adler-32 into component sums */
sum2 = (adler >> 16) & 0xffff;
adler &= 0xffff;
/* in case user likes doing a byte at a time, keep it fast */
if (len == 1) {
adler += buf[0];
if (adler >= BASE)
adler -= BASE;
sum2 += adler;
if (sum2 >= BASE)
sum2 -= BASE;
return adler | (sum2 << 16);
}
/* initial Adler-32 value (deferred check for len == 1 speed) */
if (buf == Z_NULL)
return 1L;
/* in case short lengths are provided, keep it somewhat fast */
if (len < 16) {
while (len--) {
adler += *buf++;
sum2 += adler;
}
if (adler >= BASE)
adler -= BASE;
MOD4(sum2); /* only added so many BASE's */
return adler | (sum2 << 16);
}
/* do length NMAX blocks -- requires just one modulo operation */
while (len >= NMAX) {
len -= NMAX;
n = NMAX / 16; /* NMAX is divisible by 16 */
do {
DO16(buf); /* 16 sums unrolled */
buf += 16;
} while (--n);
MOD(adler);
MOD(sum2);
}
/* do remaining bytes (less than NMAX, still just one modulo) */
if (len) { /* avoid modulos if none remaining */
while (len >= 16) {
len -= 16;
DO16(buf);
buf += 16;
}
while (len--) {
adler += *buf++;
sum2 += adler;
}
MOD(adler);
MOD(sum2);
}
/* return recombined sums */
return adler | (sum2 << 16);
}
/* ========================================================================= */
local uLong adler32_combine_(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off64_t len2;
{
unsigned long sum1;
unsigned long sum2;
unsigned rem;
/* the derivation of this formula is left as an exercise for the reader */
rem = (unsigned)(len2 % BASE);
sum1 = adler1 & 0xffff;
sum2 = rem * sum1;
MOD(sum2);
sum1 += (adler2 & 0xffff) + BASE - 1;
sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
if (sum1 >= BASE) sum1 -= BASE;
if (sum1 >= BASE) sum1 -= BASE;
if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1);
if (sum2 >= BASE) sum2 -= BASE;
return sum1 | (sum2 << 16);
}
/* ========================================================================= */
uLong ZEXPORT adler32_combine(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off_t len2;
{
return adler32_combine_(adler1, adler2, len2);
}
uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off64_t len2;
{
return adler32_combine_(adler1, adler2, len2);
}

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/* compress.c -- compress a memory buffer
* Copyright (C) 1995-2005 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#define ZLIB_INTERNAL
#include "zlib.h"
/* ===========================================================================
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
length of the source buffer. Upon entry, destLen is the total size of the
destination buffer, which must be at least 0.1% larger than sourceLen plus
12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
int level;
{
z_stream stream;
int err;
stream.next_in = (Bytef*)source;
stream.avail_in = (uInt)sourceLen;
#ifdef MAXSEG_64K
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
#endif
stream.next_out = dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
stream.opaque = (voidpf)0;
err = deflateInit(&stream, level);
if (err != Z_OK) return err;
err = deflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
deflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = deflateEnd(&stream);
return err;
}
/* ===========================================================================
*/
int ZEXPORT compress (dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
{
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}
/* ===========================================================================
If the default memLevel or windowBits for deflateInit() is changed, then
this function needs to be updated.
*/
uLong ZEXPORT compressBound (sourceLen)
uLong sourceLen;
{
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13;
}

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/* crc32.c -- compute the CRC-32 of a data stream
* Copyright (C) 1995-2006, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*
* Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster
* CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
* tables for updating the shift register in one step with three exclusive-ors
* instead of four steps with four exclusive-ors. This results in about a
* factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
*/
/* @(#) $Id$ */
/*
Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
protection on the static variables used to control the first-use generation
of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
first call get_crc_table() to initialize the tables before allowing more than
one thread to use crc32().
*/
#ifdef MAKECRCH
# include <stdio.h>
# ifndef DYNAMIC_CRC_TABLE
# define DYNAMIC_CRC_TABLE
# endif /* !DYNAMIC_CRC_TABLE */
#endif /* MAKECRCH */
#include "zutil.h" /* for STDC and FAR definitions */
#define local static
/* Find a four-byte integer type for crc32_little() and crc32_big(). */
#ifndef NOBYFOUR
# ifdef STDC /* need ANSI C limits.h to determine sizes */
# include <limits.h>
# define BYFOUR
# if (UINT_MAX == 0xffffffffUL)
typedef unsigned int u4;
# else
# if (ULONG_MAX == 0xffffffffUL)
typedef unsigned long u4;
# else
# if (USHRT_MAX == 0xffffffffUL)
typedef unsigned short u4;
# else
# undef BYFOUR /* can't find a four-byte integer type! */
# endif
# endif
# endif
# endif /* STDC */
#endif /* !NOBYFOUR */
/* Definitions for doing the crc four data bytes at a time. */
#ifdef BYFOUR
# define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \
(((w)&0xff00)<<8)+(((w)&0xff)<<24))
local unsigned long crc32_little OF((unsigned long,
const unsigned char FAR *, unsigned));
local unsigned long crc32_big OF((unsigned long,
const unsigned char FAR *, unsigned));
# define TBLS 8
#else
# define TBLS 1
#endif /* BYFOUR */
/* Local functions for crc concatenation */
local unsigned long gf2_matrix_times OF((unsigned long *mat,
unsigned long vec));
local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
local uLong crc32_combine_(uLong crc1, uLong crc2, z_off64_t len2);
#ifdef DYNAMIC_CRC_TABLE
local volatile int crc_table_empty = 1;
local unsigned long FAR crc_table[TBLS][256];
local void make_crc_table OF((void));
#ifdef MAKECRCH
local void write_table OF((FILE *, const unsigned long FAR *));
#endif /* MAKECRCH */
/*
Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
Polynomials over GF(2) are represented in binary, one bit per coefficient,
with the lowest powers in the most significant bit. Then adding polynomials
is just exclusive-or, and multiplying a polynomial by x is a right shift by
one. If we call the above polynomial p, and represent a byte as the
polynomial q, also with the lowest power in the most significant bit (so the
byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,
where a mod b means the remainder after dividing a by b.
This calculation is done using the shift-register method of multiplying and
taking the remainder. The register is initialized to zero, and for each
incoming bit, x^32 is added mod p to the register if the bit is a one (where
x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by
x (which is shifting right by one and adding x^32 mod p if the bit shifted
out is a one). We start with the highest power (least significant bit) of
q and repeat for all eight bits of q.
The first table is simply the CRC of all possible eight bit values. This is
all the information needed to generate CRCs on data a byte at a time for all
combinations of CRC register values and incoming bytes. The remaining tables
allow for word-at-a-time CRC calculation for both big-endian and little-
endian machines, where a word is four bytes.
*/
local void make_crc_table()
{
unsigned long c;
int n, k;
unsigned long poly; /* polynomial exclusive-or pattern */
/* terms of polynomial defining this crc (except x^32): */
static volatile int first = 1; /* flag to limit concurrent making */
static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
/* See if another task is already doing this (not thread-safe, but better
than nothing -- significantly reduces duration of vulnerability in
case the advice about DYNAMIC_CRC_TABLE is ignored) */
if (first) {
first = 0;
/* make exclusive-or pattern from polynomial (0xedb88320UL) */
poly = 0UL;
for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)
poly |= 1UL << (31 - p[n]);
/* generate a crc for every 8-bit value */
for (n = 0; n < 256; n++) {
c = (unsigned long)n;
for (k = 0; k < 8; k++)
c = c & 1 ? poly ^ (c >> 1) : c >> 1;
crc_table[0][n] = c;
}
#ifdef BYFOUR
/* generate crc for each value followed by one, two, and three zeros,
and then the byte reversal of those as well as the first table */
for (n = 0; n < 256; n++) {
c = crc_table[0][n];
crc_table[4][n] = REV(c);
for (k = 1; k < 4; k++) {
c = crc_table[0][c & 0xff] ^ (c >> 8);
crc_table[k][n] = c;
crc_table[k + 4][n] = REV(c);
}
}
#endif /* BYFOUR */
crc_table_empty = 0;
}
else { /* not first */
/* wait for the other guy to finish (not efficient, but rare) */
while (crc_table_empty)
;
}
#ifdef MAKECRCH
/* write out CRC tables to crc32.h */
{
FILE *out;
out = fopen("crc32.h", "w");
if (out == NULL) return;
fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
fprintf(out, "local const unsigned long FAR ");
fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");
write_table(out, crc_table[0]);
# ifdef BYFOUR
fprintf(out, "#ifdef BYFOUR\n");
for (k = 1; k < 8; k++) {
fprintf(out, " },\n {\n");
write_table(out, crc_table[k]);
}
fprintf(out, "#endif\n");
# endif /* BYFOUR */
fprintf(out, " }\n};\n");
fclose(out);
}
#endif /* MAKECRCH */
}
#ifdef MAKECRCH
local void write_table(out, table)
FILE *out;
const unsigned long FAR *table;
{
int n;
for (n = 0; n < 256; n++)
fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", table[n],
n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
}
#endif /* MAKECRCH */
#else /* !DYNAMIC_CRC_TABLE */
/* ========================================================================
* Tables of CRC-32s of all single-byte values, made by make_crc_table().
*/
#include "crc32.h"
#endif /* DYNAMIC_CRC_TABLE */
/* =========================================================================
* This function can be used by asm versions of crc32()
*/
const unsigned long FAR * ZEXPORT get_crc_table()
{
#ifdef DYNAMIC_CRC_TABLE
if (crc_table_empty)
make_crc_table();
#endif /* DYNAMIC_CRC_TABLE */
return (const unsigned long FAR *)crc_table;
}
/* ========================================================================= */
#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)
#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1
/* ========================================================================= */
unsigned long ZEXPORT crc32(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
uInt len;
{
if (buf == Z_NULL) return 0UL;
#ifdef DYNAMIC_CRC_TABLE
if (crc_table_empty)
make_crc_table();
#endif /* DYNAMIC_CRC_TABLE */
#ifdef BYFOUR
if (sizeof(void *) == sizeof(ptrdiff_t)) {
u4 endian;
endian = 1;
if (*((unsigned char *)(&endian)))
return crc32_little(crc, buf, len);
else
return crc32_big(crc, buf, len);
}
#endif /* BYFOUR */
crc = crc ^ 0xffffffffUL;
while (len >= 8) {
DO8;
len -= 8;
}
if (len) do {
DO1;
} while (--len);
return crc ^ 0xffffffffUL;
}
#ifdef BYFOUR
/* ========================================================================= */
#define DOLIT4 c ^= *buf4++; \
c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \
crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]
#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4
/* ========================================================================= */
local unsigned long crc32_little(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
unsigned len;
{
register u4 c;
register const u4 FAR *buf4;
c = (u4)crc;
c = ~c;
while (len && ((ptrdiff_t)buf & 3)) {
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
len--;
}
buf4 = (const u4 FAR *)(const void FAR *)buf;
while (len >= 32) {
DOLIT32;
len -= 32;
}
while (len >= 4) {
DOLIT4;
len -= 4;
}
buf = (const unsigned char FAR *)buf4;
if (len) do {
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
} while (--len);
c = ~c;
return (unsigned long)c;
}
/* ========================================================================= */
#define DOBIG4 c ^= *++buf4; \
c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \
crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]
#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4
/* ========================================================================= */
local unsigned long crc32_big(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
unsigned len;
{
register u4 c;
register const u4 FAR *buf4;
c = REV((u4)crc);
c = ~c;
while (len && ((ptrdiff_t)buf & 3)) {
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
len--;
}
buf4 = (const u4 FAR *)(const void FAR *)buf;
buf4--;
while (len >= 32) {
DOBIG32;
len -= 32;
}
while (len >= 4) {
DOBIG4;
len -= 4;
}
buf4++;
buf = (const unsigned char FAR *)buf4;
if (len) do {
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
} while (--len);
c = ~c;
return (unsigned long)(REV(c));
}
#endif /* BYFOUR */
#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
/* ========================================================================= */
local unsigned long gf2_matrix_times(mat, vec)
unsigned long *mat;
unsigned long vec;
{
unsigned long sum;
sum = 0;
while (vec) {
if (vec & 1)
sum ^= *mat;
vec >>= 1;
mat++;
}
return sum;
}
/* ========================================================================= */
local void gf2_matrix_square(square, mat)
unsigned long *square;
unsigned long *mat;
{
int n;
for (n = 0; n < GF2_DIM; n++)
square[n] = gf2_matrix_times(mat, mat[n]);
}
/* ========================================================================= */
local uLong crc32_combine_(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off64_t len2;
{
int n;
unsigned long row;
unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
/* degenerate case (also disallow negative lengths) */
if (len2 <= 0)
return crc1;
/* put operator for one zero bit in odd */
odd[0] = 0xedb88320UL; /* CRC-32 polynomial */
row = 1;
for (n = 1; n < GF2_DIM; n++) {
odd[n] = row;
row <<= 1;
}
/* put operator for two zero bits in even */
gf2_matrix_square(even, odd);
/* put operator for four zero bits in odd */
gf2_matrix_square(odd, even);
/* apply len2 zeros to crc1 (first square will put the operator for one
zero byte, eight zero bits, in even) */
do {
/* apply zeros operator for this bit of len2 */
gf2_matrix_square(even, odd);
if (len2 & 1)
crc1 = gf2_matrix_times(even, crc1);
len2 >>= 1;
/* if no more bits set, then done */
if (len2 == 0)
break;
/* another iteration of the loop with odd and even swapped */
gf2_matrix_square(odd, even);
if (len2 & 1)
crc1 = gf2_matrix_times(odd, crc1);
len2 >>= 1;
/* if no more bits set, then done */
} while (len2 != 0);
/* return combined crc */
crc1 ^= crc2;
return crc1;
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off_t len2;
{
return crc32_combine_(crc1, crc2, len2);
}
uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off64_t len2;
{
return crc32_combine_(crc1, crc2, len2);
}

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/* crc32.h -- tables for rapid CRC calculation
* Generated automatically by crc32.c
*/
local const unsigned long FAR crc_table[TBLS][256] =
{
{
0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
0x2d02ef8dUL
#ifdef BYFOUR
},
{
0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,
0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,
0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,
0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,
0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,
0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,
0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,
0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,
0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,
0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,
0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,
0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,
0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,
0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,
0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,
0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,
0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,
0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,
0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,
0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,
0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,
0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,
0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,
0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,
0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,
0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,
0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,
0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,
0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,
0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,
0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,
0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,
0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,
0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,
0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,
0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,
0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,
0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,
0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,
0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,
0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,
0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,
0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,
0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,
0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,
0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,
0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,
0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,
0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,
0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,
0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,
0x9324fd72UL
},
{
0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,
0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,
0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,
0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,
0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,
0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,
0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,
0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,
0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,
0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,
0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,
0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,
0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,
0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,
0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,
0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,
0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,
0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,
0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,
0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,
0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,
0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,
0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,
0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,
0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,
0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,
0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,
0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,
0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,
0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,
0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,
0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,
0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,
0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,
0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,
0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,
0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,
0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,
0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,
0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,
0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,
0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,
0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,
0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,
0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,
0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,
0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,
0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,
0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,
0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,
0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,
0xbe9834edUL
},
{
0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,
0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL,
0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL,
0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL,
0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL,
0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL,
0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,
0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL,
0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL,
0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL,
0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL,
0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL,
0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL,
0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL,
0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL,
0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL,
0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL,
0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL,
0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL,
0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL,
0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL,
0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL,
0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL,
0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL,
0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL,
0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 0x55e5d15eUL,
0x47507eb0UL, 0xffec19d5UL, 0x623b216cUL, 0xda874609UL, 0xc832e9e7UL,
0x708e8e82UL, 0x28ed9ed4UL, 0x9051f9b1UL, 0x82e4565fUL, 0x3a58313aUL,
0xa78f0983UL, 0x1f336ee6UL, 0x0d86c108UL, 0xb53aa66dUL, 0xbd40e1a4UL,
0x05fc86c1UL, 0x1749292fUL, 0xaff54e4aUL, 0x322276f3UL, 0x8a9e1196UL,
0x982bbe78UL, 0x2097d91dUL, 0x78f4c94bUL, 0xc048ae2eUL, 0xd2fd01c0UL,
0x6a4166a5UL, 0xf7965e1cUL, 0x4f2a3979UL, 0x5d9f9697UL, 0xe523f1f2UL,
0x4d6b1905UL, 0xf5d77e60UL, 0xe762d18eUL, 0x5fdeb6ebUL, 0xc2098e52UL,
0x7ab5e937UL, 0x680046d9UL, 0xd0bc21bcUL, 0x88df31eaUL, 0x3063568fUL,
0x22d6f961UL, 0x9a6a9e04UL, 0x07bda6bdUL, 0xbf01c1d8UL, 0xadb46e36UL,
0x15080953UL, 0x1d724e9aUL, 0xa5ce29ffUL, 0xb77b8611UL, 0x0fc7e174UL,
0x9210d9cdUL, 0x2aacbea8UL, 0x38191146UL, 0x80a57623UL, 0xd8c66675UL,
0x607a0110UL, 0x72cfaefeUL, 0xca73c99bUL, 0x57a4f122UL, 0xef189647UL,
0xfdad39a9UL, 0x45115eccUL, 0x764dee06UL, 0xcef18963UL, 0xdc44268dUL,
0x64f841e8UL, 0xf92f7951UL, 0x41931e34UL, 0x5326b1daUL, 0xeb9ad6bfUL,
0xb3f9c6e9UL, 0x0b45a18cUL, 0x19f00e62UL, 0xa14c6907UL, 0x3c9b51beUL,
0x842736dbUL, 0x96929935UL, 0x2e2efe50UL, 0x2654b999UL, 0x9ee8defcUL,
0x8c5d7112UL, 0x34e11677UL, 0xa9362eceUL, 0x118a49abUL, 0x033fe645UL,
0xbb838120UL, 0xe3e09176UL, 0x5b5cf613UL, 0x49e959fdUL, 0xf1553e98UL,
0x6c820621UL, 0xd43e6144UL, 0xc68bceaaUL, 0x7e37a9cfUL, 0xd67f4138UL,
0x6ec3265dUL, 0x7c7689b3UL, 0xc4caeed6UL, 0x591dd66fUL, 0xe1a1b10aUL,
0xf3141ee4UL, 0x4ba87981UL, 0x13cb69d7UL, 0xab770eb2UL, 0xb9c2a15cUL,
0x017ec639UL, 0x9ca9fe80UL, 0x241599e5UL, 0x36a0360bUL, 0x8e1c516eUL,
0x866616a7UL, 0x3eda71c2UL, 0x2c6fde2cUL, 0x94d3b949UL, 0x090481f0UL,
0xb1b8e695UL, 0xa30d497bUL, 0x1bb12e1eUL, 0x43d23e48UL, 0xfb6e592dUL,
0xe9dbf6c3UL, 0x516791a6UL, 0xccb0a91fUL, 0x740cce7aUL, 0x66b96194UL,
0xde0506f1UL
},
{
0x00000000UL, 0x96300777UL, 0x2c610eeeUL, 0xba510999UL, 0x19c46d07UL,
0x8ff46a70UL, 0x35a563e9UL, 0xa395649eUL, 0x3288db0eUL, 0xa4b8dc79UL,
0x1ee9d5e0UL, 0x88d9d297UL, 0x2b4cb609UL, 0xbd7cb17eUL, 0x072db8e7UL,
0x911dbf90UL, 0x6410b71dUL, 0xf220b06aUL, 0x4871b9f3UL, 0xde41be84UL,
0x7dd4da1aUL, 0xebe4dd6dUL, 0x51b5d4f4UL, 0xc785d383UL, 0x56986c13UL,
0xc0a86b64UL, 0x7af962fdUL, 0xecc9658aUL, 0x4f5c0114UL, 0xd96c0663UL,
0x633d0ffaUL, 0xf50d088dUL, 0xc8206e3bUL, 0x5e10694cUL, 0xe44160d5UL,
0x727167a2UL, 0xd1e4033cUL, 0x47d4044bUL, 0xfd850dd2UL, 0x6bb50aa5UL,
0xfaa8b535UL, 0x6c98b242UL, 0xd6c9bbdbUL, 0x40f9bcacUL, 0xe36cd832UL,
0x755cdf45UL, 0xcf0dd6dcUL, 0x593dd1abUL, 0xac30d926UL, 0x3a00de51UL,
0x8051d7c8UL, 0x1661d0bfUL, 0xb5f4b421UL, 0x23c4b356UL, 0x9995bacfUL,
0x0fa5bdb8UL, 0x9eb80228UL, 0x0888055fUL, 0xb2d90cc6UL, 0x24e90bb1UL,
0x877c6f2fUL, 0x114c6858UL, 0xab1d61c1UL, 0x3d2d66b6UL, 0x9041dc76UL,
0x0671db01UL, 0xbc20d298UL, 0x2a10d5efUL, 0x8985b171UL, 0x1fb5b606UL,
0xa5e4bf9fUL, 0x33d4b8e8UL, 0xa2c90778UL, 0x34f9000fUL, 0x8ea80996UL,
0x18980ee1UL, 0xbb0d6a7fUL, 0x2d3d6d08UL, 0x976c6491UL, 0x015c63e6UL,
0xf4516b6bUL, 0x62616c1cUL, 0xd8306585UL, 0x4e0062f2UL, 0xed95066cUL,
0x7ba5011bUL, 0xc1f40882UL, 0x57c40ff5UL, 0xc6d9b065UL, 0x50e9b712UL,
0xeab8be8bUL, 0x7c88b9fcUL, 0xdf1ddd62UL, 0x492dda15UL, 0xf37cd38cUL,
0x654cd4fbUL, 0x5861b24dUL, 0xce51b53aUL, 0x7400bca3UL, 0xe230bbd4UL,
0x41a5df4aUL, 0xd795d83dUL, 0x6dc4d1a4UL, 0xfbf4d6d3UL, 0x6ae96943UL,
0xfcd96e34UL, 0x468867adUL, 0xd0b860daUL, 0x732d0444UL, 0xe51d0333UL,
0x5f4c0aaaUL, 0xc97c0dddUL, 0x3c710550UL, 0xaa410227UL, 0x10100bbeUL,
0x86200cc9UL, 0x25b56857UL, 0xb3856f20UL, 0x09d466b9UL, 0x9fe461ceUL,
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0x810db42eUL, 0x3b5cbdb7UL, 0xad6cbac0UL, 0x2083b8edUL, 0xb6b3bf9aUL,
0x0ce2b603UL, 0x9ad2b174UL, 0x3947d5eaUL, 0xaf77d29dUL, 0x1526db04UL,
0x8316dc73UL, 0x120b63e3UL, 0x843b6494UL, 0x3e6a6d0dUL, 0xa85a6a7aUL,
0x0bcf0ee4UL, 0x9dff0993UL, 0x27ae000aUL, 0xb19e077dUL, 0x44930ff0UL,
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0x71366c19UL, 0xe7066b6eUL, 0x761bd4feUL, 0xe02bd389UL, 0x5a7ada10UL,
0xcc4add67UL, 0x6fdfb9f9UL, 0xf9efbe8eUL, 0x43beb717UL, 0xd58eb060UL,
0xe8a3d6d6UL, 0x7e93d1a1UL, 0xc4c2d838UL, 0x52f2df4fUL, 0xf167bbd1UL,
0x6757bca6UL, 0xdd06b53fUL, 0x4b36b248UL, 0xda2b0dd8UL, 0x4c1b0aafUL,
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0x95770cccUL, 0x03470bbbUL, 0xb9160222UL, 0x2f260555UL, 0xbe3bbac5UL,
0x280bbdb2UL, 0x925ab42bUL, 0x046ab35cUL, 0xa7ffd7c2UL, 0x31cfd0b5UL,
0x8b9ed92cUL, 0x1daede5bUL, 0xb0c2649bUL, 0x26f263ecUL, 0x9ca36a75UL,
0x0a936d02UL, 0xa906099cUL, 0x3f360eebUL, 0x85670772UL, 0x13570005UL,
0x824abf95UL, 0x147ab8e2UL, 0xae2bb17bUL, 0x381bb60cUL, 0x9b8ed292UL,
0x0dbed5e5UL, 0xb7efdc7cUL, 0x21dfdb0bUL, 0xd4d2d386UL, 0x42e2d4f1UL,
0xf8b3dd68UL, 0x6e83da1fUL, 0xcd16be81UL, 0x5b26b9f6UL, 0xe177b06fUL,
0x7747b718UL, 0xe65a0888UL, 0x706a0fffUL, 0xca3b0666UL, 0x5c0b0111UL,
0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,
0xeed20dd7UL, 0x5483044eUL, 0xc2b30339UL, 0x612667a7UL, 0xf71660d0UL,
0x4d476949UL, 0xdb776e3eUL, 0x4a6ad1aeUL, 0xdc5ad6d9UL, 0x660bdf40UL,
0xf03bd837UL, 0x53aebca9UL, 0xc59ebbdeUL, 0x7fcfb247UL, 0xe9ffb530UL,
0x1cf2bdbdUL, 0x8ac2bacaUL, 0x3093b353UL, 0xa6a3b424UL, 0x0536d0baUL,
0x9306d7cdUL, 0x2957de54UL, 0xbf67d923UL, 0x2e7a66b3UL, 0xb84a61c4UL,
0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,
0x8def022dUL
},
{
0x00000000UL, 0x41311b19UL, 0x82623632UL, 0xc3532d2bUL, 0x04c56c64UL,
0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,
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0x55d7ae2eUL, 0x14e6b537UL, 0xd7b5981cUL, 0x96848305UL, 0x59981b82UL,
0x18a9009bUL, 0xdbfa2db0UL, 0x9acb36a9UL, 0x5d5d77e6UL, 0x1c6c6cffUL,
0xdf3f41d4UL, 0x9e0e5acdUL, 0xa2248495UL, 0xe3159f8cUL, 0x2046b2a7UL,
0x6177a9beUL, 0xa6e1e8f1UL, 0xe7d0f3e8UL, 0x2483dec3UL, 0x65b2c5daUL,
0xaaae5d5dUL, 0xeb9f4644UL, 0x28cc6b6fUL, 0x69fd7076UL, 0xae6b3139UL,
0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,
0x715470edUL, 0x30656bf4UL, 0xf7f32abbUL, 0xb6c231a2UL, 0x75911c89UL,
0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,
0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,
0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,
0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,
0xce968d13UL, 0x0900cc5cUL, 0x4831d745UL, 0x8b62fa6eUL, 0xca53e177UL,
0x545dbbbaUL, 0x156ca0a3UL, 0xd63f8d88UL, 0x970e9691UL, 0x5098d7deUL,
0x11a9ccc7UL, 0xd2fae1ecUL, 0x93cbfaf5UL, 0x5cd76272UL, 0x1de6796bUL,
0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,
0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,
0xa3ae9101UL, 0xe29f8a18UL, 0x21cca733UL, 0x60fdbc2aUL, 0xafe124adUL,
0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,
0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,
0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,
0xfef3e6e7UL, 0xbfc2fdfeUL, 0x7c91d0d5UL, 0x3da0cbccUL, 0xfa368a83UL,
0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,
0xc9fab509UL, 0x88cbae10UL, 0x4f5def5fUL, 0x0e6cf446UL, 0xcd3fd96dUL,
0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,
0x47d73697UL, 0x06e62d8eUL, 0xc5b500a5UL, 0x84841bbcUL, 0x1a8a4171UL,
0x5bbb5a68UL, 0x98e87743UL, 0xd9d96c5aUL, 0x1e4f2d15UL, 0x5f7e360cUL,
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0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,
0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,
0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,
0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,
0x26a09f29UL, 0xb8aec5e4UL, 0xf99fdefdUL, 0x3accf3d6UL, 0x7bfde8cfUL,
0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,
0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,
0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,
0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,
0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,
0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,
0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,
0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,
0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,
0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,
0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,
0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,
0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,
0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,
0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,
0x72fd2493UL
},
{
0x00000000UL, 0x376ac201UL, 0x6ed48403UL, 0x59be4602UL, 0xdca80907UL,
0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,
0xd685970dUL, 0xe1ef550cUL, 0x64f91a09UL, 0x5393d808UL, 0x0a2d9e0aUL,
0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,
0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,
0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,
0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,
0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,
0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,
0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,
0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,
0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,
0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,
0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,
0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,
0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,
0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,
0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,
0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,
0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,
0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,
0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,
0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,
0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,
0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,
0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,
0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,
0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,
0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,
0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,
0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,
0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,
0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,
0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,
0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,
0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,
0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,
0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,
0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,
0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,
0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,
0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,
0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,
0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,
0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,
0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,
0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,
0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,
0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,
0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,
0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,
0xed3498beUL
},
{
0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,
0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,
0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,
0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,
0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,
0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,
0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,
0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,
0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,
0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,
0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,
0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,
0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,
0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,
0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,
0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,
0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,
0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,
0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,
0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,
0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,
0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,
0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,
0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,
0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,
0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,
0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,
0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,
0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,
0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,
0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,
0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,
0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,
0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,
0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,
0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,
0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,
0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,
0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,
0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,
0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,
0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,
0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,
0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,
0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,
0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,
0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,
0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,
0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,
0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,
0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,
0xf10605deUL
#endif
}
};

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libs/libwebsockets/win32port/zlib/deflate.c Normal file
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/* deflate.h -- internal compression state
* Copyright (C) 1995-2010 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* @(#) $Id$ */
#ifndef DEFLATE_H
#define DEFLATE_H
#include "zutil.h"
/* define NO_GZIP when compiling if you want to disable gzip header and
trailer creation by deflate(). NO_GZIP would be used to avoid linking in
the crc code when it is not needed. For shared libraries, gzip encoding
should be left enabled. */
#ifndef NO_GZIP
# define GZIP
#endif
/* ===========================================================================
* Internal compression state.
*/
#define LENGTH_CODES 29
/* number of length codes, not counting the special END_BLOCK code */
#define LITERALS 256
/* number of literal bytes 0..255 */
#define L_CODES (LITERALS+1+LENGTH_CODES)
/* number of Literal or Length codes, including the END_BLOCK code */
#define D_CODES 30
/* number of distance codes */
#define BL_CODES 19
/* number of codes used to transfer the bit lengths */
#define HEAP_SIZE (2*L_CODES+1)
/* maximum heap size */
#define MAX_BITS 15
/* All codes must not exceed MAX_BITS bits */
#define INIT_STATE 42
#define EXTRA_STATE 69
#define NAME_STATE 73
#define COMMENT_STATE 91
#define HCRC_STATE 103
#define BUSY_STATE 113
#define FINISH_STATE 666
/* Stream status */
/* Data structure describing a single value and its code string. */
typedef struct ct_data_s {
union {
ush freq; /* frequency count */
ush code; /* bit string */
} fc;
union {
ush dad; /* father node in Huffman tree */
ush len; /* length of bit string */
} dl;
} FAR ct_data;
#define Freq fc.freq
#define Code fc.code
#define Dad dl.dad
#define Len dl.len
typedef struct static_tree_desc_s static_tree_desc;
typedef struct tree_desc_s {
ct_data *dyn_tree; /* the dynamic tree */
int max_code; /* largest code with non zero frequency */
static_tree_desc *stat_desc; /* the corresponding static tree */
} FAR tree_desc;
typedef ush Pos;
typedef Pos FAR Posf;
typedef unsigned IPos;
/* A Pos is an index in the character window. We use short instead of int to
* save space in the various tables. IPos is used only for parameter passing.
*/
typedef struct internal_state {
z_streamp strm; /* pointer back to this zlib stream */
int status; /* as the name implies */
Bytef *pending_buf; /* output still pending */
ulg pending_buf_size; /* size of pending_buf */
Bytef *pending_out; /* next pending byte to output to the stream */
uInt pending; /* nb of bytes in the pending buffer */
int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
gz_headerp gzhead; /* gzip header information to write */
uInt gzindex; /* where in extra, name, or comment */
Byte method; /* STORED (for zip only) or DEFLATED */
int last_flush; /* value of flush param for previous deflate call */
/* used by deflate.c: */
uInt w_size; /* LZ77 window size (32K by default) */
uInt w_bits; /* log2(w_size) (8..16) */
uInt w_mask; /* w_size - 1 */
Bytef *window;
/* Sliding window. Input bytes are read into the second half of the window,
* and move to the first half later to keep a dictionary of at least wSize
* bytes. With this organization, matches are limited to a distance of
* wSize-MAX_MATCH bytes, but this ensures that IO is always
* performed with a length multiple of the block size. Also, it limits
* the window size to 64K, which is quite useful on MSDOS.
* To do: use the user input buffer as sliding window.
*/
ulg window_size;
/* Actual size of window: 2*wSize, except when the user input buffer
* is directly used as sliding window.
*/
Posf *prev;
/* Link to older string with same hash index. To limit the size of this
* array to 64K, this link is maintained only for the last 32K strings.
* An index in this array is thus a window index modulo 32K.
*/
Posf *head; /* Heads of the hash chains or NIL. */
uInt ins_h; /* hash index of string to be inserted */
uInt hash_size; /* number of elements in hash table */
uInt hash_bits; /* log2(hash_size) */
uInt hash_mask; /* hash_size-1 */
uInt hash_shift;
/* Number of bits by which ins_h must be shifted at each input
* step. It must be such that after MIN_MATCH steps, the oldest
* byte no longer takes part in the hash key, that is:
* hash_shift * MIN_MATCH >= hash_bits
*/
long block_start;
/* Window position at the beginning of the current output block. Gets
* negative when the window is moved backwards.
*/
uInt match_length; /* length of best match */
IPos prev_match; /* previous match */
int match_available; /* set if previous match exists */
uInt strstart; /* start of string to insert */
uInt match_start; /* start of matching string */
uInt lookahead; /* number of valid bytes ahead in window */
uInt prev_length;
/* Length of the best match at previous step. Matches not greater than this
* are discarded. This is used in the lazy match evaluation.
*/
uInt max_chain_length;
/* To speed up deflation, hash chains are never searched beyond this
* length. A higher limit improves compression ratio but degrades the
* speed.
*/
uInt max_lazy_match;
/* Attempt to find a better match only when the current match is strictly
* smaller than this value. This mechanism is used only for compression
* levels >= 4.
*/
# define max_insert_length max_lazy_match
/* Insert new strings in the hash table only if the match length is not
* greater than this length. This saves time but degrades compression.
* max_insert_length is used only for compression levels <= 3.
*/
int level; /* compression level (1..9) */
int strategy; /* favor or force Huffman coding*/
uInt good_match;
/* Use a faster search when the previous match is longer than this */
int nice_match; /* Stop searching when current match exceeds this */
/* used by trees.c: */
/* Didn't use ct_data typedef below to supress compiler warning */
struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
struct tree_desc_s l_desc; /* desc. for literal tree */
struct tree_desc_s d_desc; /* desc. for distance tree */
struct tree_desc_s bl_desc; /* desc. for bit length tree */
ush bl_count[MAX_BITS+1];
/* number of codes at each bit length for an optimal tree */
int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
int heap_len; /* number of elements in the heap */
int heap_max; /* element of largest frequency */
/* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
* The same heap array is used to build all trees.
*/
uch depth[2*L_CODES+1];
/* Depth of each subtree used as tie breaker for trees of equal frequency
*/
uchf *l_buf; /* buffer for literals or lengths */
uInt lit_bufsize;
/* Size of match buffer for literals/lengths. There are 4 reasons for
* limiting lit_bufsize to 64K:
* - frequencies can be kept in 16 bit counters
* - if compression is not successful for the first block, all input
* data is still in the window so we can still emit a stored block even
* when input comes from standard input. (This can also be done for
* all blocks if lit_bufsize is not greater than 32K.)
* - if compression is not successful for a file smaller than 64K, we can
* even emit a stored file instead of a stored block (saving 5 bytes).
* This is applicable only for zip (not gzip or zlib).
* - creating new Huffman trees less frequently may not provide fast
* adaptation to changes in the input data statistics. (Take for
* example a binary file with poorly compressible code followed by
* a highly compressible string table.) Smaller buffer sizes give
* fast adaptation but have of course the overhead of transmitting
* trees more frequently.
* - I can't count above 4
*/
uInt last_lit; /* running index in l_buf */
ushf *d_buf;
/* Buffer for distances. To simplify the code, d_buf and l_buf have
* the same number of elements. To use different lengths, an extra flag
* array would be necessary.
*/
ulg opt_len; /* bit length of current block with optimal trees */
ulg static_len; /* bit length of current block with static trees */
uInt matches; /* number of string matches in current block */
int last_eob_len; /* bit length of EOB code for last block */
#ifdef DEBUG
ulg compressed_len; /* total bit length of compressed file mod 2^32 */
ulg bits_sent; /* bit length of compressed data sent mod 2^32 */
#endif
ush bi_buf;
/* Output buffer. bits are inserted starting at the bottom (least
* significant bits).
*/
int bi_valid;
/* Number of valid bits in bi_buf. All bits above the last valid bit
* are always zero.
*/
ulg high_water;
/* High water mark offset in window for initialized bytes -- bytes above
* this are set to zero in order to avoid memory check warnings when
* longest match routines access bytes past the input. This is then
* updated to the new high water mark.
*/
} FAR deflate_state;
/* Output a byte on the stream.
* IN assertion: there is enough room in pending_buf.
*/
#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
/* Minimum amount of lookahead, except at the end of the input file.
* See deflate.c for comments about the MIN_MATCH+1.
*/
#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
/* In order to simplify the code, particularly on 16 bit machines, match
* distances are limited to MAX_DIST instead of WSIZE.
*/
#define WIN_INIT MAX_MATCH
/* Number of bytes after end of data in window to initialize in order to avoid
memory checker errors from longest match routines */
/* in trees.c */
void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
#define d_code(dist) \
((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
/* Mapping from a distance to a distance code. dist is the distance - 1 and
* must not have side effects. _dist_code[256] and _dist_code[257] are never
* used.
*/
#ifndef DEBUG
/* Inline versions of _tr_tally for speed: */
#if defined(GEN_TREES_H) || !defined(STDC)
extern uch ZLIB_INTERNAL _length_code[];
extern uch ZLIB_INTERNAL _dist_code[];
#else
extern const uch ZLIB_INTERNAL _length_code[];
extern const uch ZLIB_INTERNAL _dist_code[];
#endif
# define _tr_tally_lit(s, c, flush) \
{ uch cc = (c); \
s->d_buf[s->last_lit] = 0; \
s->l_buf[s->last_lit++] = cc; \
s->dyn_ltree[cc].Freq++; \
flush = (s->last_lit == s->lit_bufsize-1); \
}
# define _tr_tally_dist(s, distance, length, flush) \
{ uch len = (length); \
ush dist = (distance); \
s->d_buf[s->last_lit] = dist; \
s->l_buf[s->last_lit++] = len; \
dist--; \
s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
s->dyn_dtree[d_code(dist)].Freq++; \
flush = (s->last_lit == s->lit_bufsize-1); \
}
#else
# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
# define _tr_tally_dist(s, distance, length, flush) \
flush = _tr_tally(s, distance, length)
#endif
#endif /* DEFLATE_H */

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libs/libwebsockets/win32port/zlib/gzclose.c Executable file
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/* gzclose.c -- zlib gzclose() function
* Copyright (C) 2004, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "gzguts.h"
/* gzclose() is in a separate file so that it is linked in only if it is used.
That way the other gzclose functions can be used instead to avoid linking in
unneeded compression or decompression routines. */
int ZEXPORT gzclose(file)
gzFile file;
{
#ifndef NO_GZCOMPRESS
gz_statep state;
if (file == NULL)
return Z_STREAM_ERROR;
state = (gz_statep)file;
return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
#else
return gzclose_r(file);
#endif
}

132
libs/libwebsockets/win32port/zlib/gzguts.h Executable file
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/* gzguts.h -- zlib internal header definitions for gz* operations
* Copyright (C) 2004, 2005, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#ifdef _LARGEFILE64_SOURCE
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
# endif
# ifdef _FILE_OFFSET_BITS
# undef _FILE_OFFSET_BITS
# endif
#endif
#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL
#endif
#include <stdio.h>
#include "zlib.h"
#ifdef STDC
# include <string.h>
# include <stdlib.h>
# include <limits.h>
#endif
#include <fcntl.h>
#ifdef NO_DEFLATE /* for compatibility with old definition */
# define NO_GZCOMPRESS
#endif
#ifdef _MSC_VER
# include <io.h>
# define vsnprintf _vsnprintf
#endif
#ifndef local
# define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */
/* gz* functions always use library allocation functions */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern void free OF((voidpf ptr));
#endif
/* get errno and strerror definition */
#if defined UNDER_CE
# include <windows.h>
# define zstrerror() gz_strwinerror((DWORD)GetLastError())
#else
# ifdef STDC
# include <errno.h>
# define zstrerror() strerror(errno)
# else
# define zstrerror() "stdio error (consult errno)"
# endif
#endif
/* provide prototypes for these when building zlib without LFS */
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
#endif
/* default i/o buffer size -- double this for output when reading */
#define GZBUFSIZE 8192
/* gzip modes, also provide a little integrity check on the passed structure */
#define GZ_NONE 0
#define GZ_READ 7247
#define GZ_WRITE 31153
#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
/* values for gz_state how */
#define LOOK 0 /* look for a gzip header */
#define COPY 1 /* copy input directly */
#define GZIP 2 /* decompress a gzip stream */
/* internal gzip file state data structure */
typedef struct {
/* used for both reading and writing */
int mode; /* see gzip modes above */
int fd; /* file descriptor */
char *path; /* path or fd for error messages */
z_off64_t pos; /* current position in uncompressed data */
unsigned size; /* buffer size, zero if not allocated yet */
unsigned want; /* requested buffer size, default is GZBUFSIZE */
unsigned char *in; /* input buffer */
unsigned char *out; /* output buffer (double-sized when reading) */
unsigned char *next; /* next output data to deliver or write */
/* just for reading */
unsigned have; /* amount of output data unused at next */
int eof; /* true if end of input file reached */
z_off64_t start; /* where the gzip data started, for rewinding */
z_off64_t raw; /* where the raw data started, for seeking */
int how; /* 0: get header, 1: copy, 2: decompress */
int direct; /* true if last read direct, false if gzip */
/* just for writing */
int level; /* compression level */
int strategy; /* compression strategy */
/* seek request */
z_off64_t skip; /* amount to skip (already rewound if backwards) */
int seek; /* true if seek request pending */
/* error information */
int err; /* error code */
char *msg; /* error message */
/* zlib inflate or deflate stream */
z_stream strm; /* stream structure in-place (not a pointer) */
} gz_state;
typedef gz_state FAR *gz_statep;
/* shared functions */
void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
#if defined UNDER_CE
char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
#endif
/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
value -- needed when comparing unsigned to z_off64_t, which is signed
(possible z_off64_t types off_t, off64_t, and long are all signed) */
#ifdef INT_MAX
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
#else
unsigned ZLIB_INTERNAL gz_intmax OF((void));
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
#endif

1005
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/* gzlib.c -- zlib functions common to reading and writing gzip files
* Copyright (C) 2004, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "gzguts.h"
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
# define LSEEK lseek64
#else
# define LSEEK lseek
#endif
/* Local functions */
local void gz_reset OF((gz_statep));
local gzFile gz_open OF((const char *, int, const char *));
#if defined UNDER_CE
/* Map the Windows error number in ERROR to a locale-dependent error message
string and return a pointer to it. Typically, the values for ERROR come
from GetLastError.
The string pointed to shall not be modified by the application, but may be
overwritten by a subsequent call to gz_strwinerror
The gz_strwinerror function does not change the current setting of
GetLastError. */
char ZLIB_INTERNAL *gz_strwinerror (error)
DWORD error;
{
static char buf[1024];
wchar_t *msgbuf;
DWORD lasterr = GetLastError();
DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
| FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
error,
0, /* Default language */
(LPVOID)&msgbuf,
0,
NULL);
if (chars != 0) {
/* If there is an \r\n appended, zap it. */
if (chars >= 2
&& msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
chars -= 2;
msgbuf[chars] = 0;
}
if (chars > sizeof (buf) - 1) {
chars = sizeof (buf) - 1;
msgbuf[chars] = 0;
}
wcstombs(buf, msgbuf, chars + 1);
LocalFree(msgbuf);
}
else {
sprintf(buf, "unknown win32 error (%ld)", error);
}
SetLastError(lasterr);
return buf;
}
#endif /* UNDER_CE */
/* Reset gzip file state */
local void gz_reset(state)
gz_statep state;
{
if (state->mode == GZ_READ) { /* for reading ... */
state->have = 0; /* no output data available */
state->eof = 0; /* not at end of file */
state->how = LOOK; /* look for gzip header */
state->direct = 1; /* default for empty file */
}
state->seek = 0; /* no seek request pending */
gz_error(state, Z_OK, NULL); /* clear error */
state->pos = 0; /* no uncompressed data yet */
state->strm.avail_in = 0; /* no input data yet */
}
/* Open a gzip file either by name or file descriptor. */
local gzFile gz_open(path, fd, mode)
const char *path;
int fd;
const char *mode;
{
gz_statep state;
/* allocate gzFile structure to return */
state = malloc(sizeof(gz_state));
if (state == NULL)
return NULL;
state->size = 0; /* no buffers allocated yet */
state->want = GZBUFSIZE; /* requested buffer size */
state->msg = NULL; /* no error message yet */
/* interpret mode */
state->mode = GZ_NONE;
state->level = Z_DEFAULT_COMPRESSION;
state->strategy = Z_DEFAULT_STRATEGY;
while (*mode) {
if (*mode >= '0' && *mode <= '9')
state->level = *mode - '0';
else
switch (*mode) {
case 'r':
state->mode = GZ_READ;
break;
#ifndef NO_GZCOMPRESS
case 'w':
state->mode = GZ_WRITE;
break;
case 'a':
state->mode = GZ_APPEND;
break;
#endif
case '+': /* can't read and write at the same time */
free(state);
return NULL;
case 'b': /* ignore -- will request binary anyway */
break;
case 'f':
state->strategy = Z_FILTERED;
break;
case 'h':
state->strategy = Z_HUFFMAN_ONLY;
break;
case 'R':
state->strategy = Z_RLE;
break;
case 'F':
state->strategy = Z_FIXED;
default: /* could consider as an error, but just ignore */
;
}
mode++;
}
/* must provide an "r", "w", or "a" */
if (state->mode == GZ_NONE) {
free(state);
return NULL;
}
/* save the path name for error messages */
state->path = malloc(strlen(path) + 1);
if (state->path == NULL) {
free(state);
return NULL;
}
strcpy(state->path, path);
/* open the file with the appropriate mode (or just use fd) */
state->fd = fd != -1 ? fd :
open(path,
#ifdef O_LARGEFILE
O_LARGEFILE |
#endif
#ifdef O_BINARY
O_BINARY |
#endif
(state->mode == GZ_READ ?
O_RDONLY :
(O_WRONLY | O_CREAT | (
state->mode == GZ_WRITE ?
O_TRUNC :
O_APPEND))),
0666);
if (state->fd == -1) {
free(state->path);
free(state);
return NULL;
}
if (state->mode == GZ_APPEND)
state->mode = GZ_WRITE; /* simplify later checks */
/* save the current position for rewinding (only if reading) */
if (state->mode == GZ_READ) {
state->start = LSEEK(state->fd, 0, SEEK_CUR);
if (state->start == -1) state->start = 0;
}
/* initialize stream */
gz_reset(state);
/* return stream */
return (gzFile)state;
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzopen(path, mode)
const char *path;
const char *mode;
{
return gz_open(path, -1, mode);
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzopen64(path, mode)
const char *path;
const char *mode;
{
return gz_open(path, -1, mode);
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzdopen(fd, mode)
int fd;
const char *mode;
{
char *path; /* identifier for error messages */
gzFile gz;
if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)
return NULL;
sprintf(path, "<fd:%d>", fd); /* for debugging */
gz = gz_open(path, fd, mode);
free(path);
return gz;
}
/* -- see zlib.h -- */
int ZEXPORT gzbuffer(file, size)
gzFile file;
unsigned size;
{
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return -1;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return -1;
/* make sure we haven't already allocated memory */
if (state->size != 0)
return -1;
/* check and set requested size */
if (size == 0)
return -1;
state->want = size;
return 0;
}
/* -- see zlib.h -- */
int ZEXPORT gzrewind(file)
gzFile file;
{
gz_statep state;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
/* check that we're reading and that there's no error */
if (state->mode != GZ_READ || state->err != Z_OK)
return -1;
/* back up and start over */
if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
return -1;
gz_reset(state);
return 0;
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gzseek64(file, offset, whence)
gzFile file;
z_off64_t offset;
int whence;
{
unsigned n;
z_off64_t ret;
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return -1;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return -1;
/* check that there's no error */
if (state->err != Z_OK)
return -1;
/* can only seek from start or relative to current position */
if (whence != SEEK_SET && whence != SEEK_CUR)
return -1;
/* normalize offset to a SEEK_CUR specification */
if (whence == SEEK_SET)
offset -= state->pos;
else if (state->seek)
offset += state->skip;
state->seek = 0;
/* if within raw area while reading, just go there */
if (state->mode == GZ_READ && state->how == COPY &&
state->pos + offset >= state->raw) {
ret = LSEEK(state->fd, offset - state->have, SEEK_CUR);
if (ret == -1)
return -1;
state->have = 0;
state->eof = 0;
state->seek = 0;
gz_error(state, Z_OK, NULL);
state->strm.avail_in = 0;
state->pos += offset;
return state->pos;
}
/* calculate skip amount, rewinding if needed for back seek when reading */
if (offset < 0) {
if (state->mode != GZ_READ) /* writing -- can't go backwards */
return -1;
offset += state->pos;
if (offset < 0) /* before start of file! */
return -1;
if (gzrewind(file) == -1) /* rewind, then skip to offset */
return -1;
}
/* if reading, skip what's in output buffer (one less gzgetc() check) */
if (state->mode == GZ_READ) {
n = GT_OFF(state->have) || (z_off64_t)state->have > offset ?
(unsigned)offset : state->have;
state->have -= n;
state->next += n;
state->pos += n;
offset -= n;
}
/* request skip (if not zero) */
if (offset) {
state->seek = 1;
state->skip = offset;
}
return state->pos + offset;
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gzseek(file, offset, whence)
gzFile file;
z_off_t offset;
int whence;
{
z_off64_t ret;
ret = gzseek64(file, (z_off64_t)offset, whence);
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gztell64(file)
gzFile file;
{
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return -1;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return -1;
/* return position */
return state->pos + (state->seek ? state->skip : 0);
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gztell(file)
gzFile file;
{
z_off64_t ret;
ret = gztell64(file);
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gzoffset64(file)
gzFile file;
{
z_off64_t offset;
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return -1;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return -1;
/* compute and return effective offset in file */
offset = LSEEK(state->fd, 0, SEEK_CUR);
if (offset == -1)
return -1;
if (state->mode == GZ_READ) /* reading */
offset -= state->strm.avail_in; /* don't count buffered input */
return offset;
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gzoffset(file)
gzFile file;
{
z_off64_t ret;
ret = gzoffset64(file);
return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}
/* -- see zlib.h -- */
int ZEXPORT gzeof(file)
gzFile file;
{
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return 0;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return 0;
/* return end-of-file state */
return state->mode == GZ_READ ?
(state->eof && state->strm.avail_in == 0 && state->have == 0) : 0;
}
/* -- see zlib.h -- */
const char * ZEXPORT gzerror(file, errnum)
gzFile file;
int *errnum;
{
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return NULL;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return NULL;
/* return error information */
if (errnum != NULL)
*errnum = state->err;
return state->msg == NULL ? "" : state->msg;
}
/* -- see zlib.h -- */
void ZEXPORT gzclearerr(file)
gzFile file;
{
gz_statep state;
/* get internal structure and check integrity */
if (file == NULL)
return;
state = (gz_statep)file;
if (state->mode != GZ_READ && state->mode != GZ_WRITE)
return;
/* clear error and end-of-file */
if (state->mode == GZ_READ)
state->eof = 0;
gz_error(state, Z_OK, NULL);
}
/* Create an error message in allocated memory and set state->err and
state->msg accordingly. Free any previous error message already there. Do
not try to free or allocate space if the error is Z_MEM_ERROR (out of
memory). Simply save the error message as a static string. If there is an
allocation failure constructing the error message, then convert the error to
out of memory. */
void ZLIB_INTERNAL gz_error(state, err, msg)
gz_statep state;
int err;
const char *msg;
{
/* free previously allocated message and clear */
if (state->msg != NULL) {
if (state->err != Z_MEM_ERROR)
free(state->msg);
state->msg = NULL;
}
/* set error code, and if no message, then done */
state->err = err;
if (msg == NULL)
return;
/* for an out of memory error, save as static string */
if (err == Z_MEM_ERROR) {
state->msg = (char *)msg;
return;
}
/* construct error message with path */
if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {
state->err = Z_MEM_ERROR;
state->msg = (char *)"out of memory";
return;
}
strcpy(state->msg, state->path);
strcat(state->msg, ": ");
strcat(state->msg, msg);
return;
}
#ifndef INT_MAX
/* portably return maximum value for an int (when limits.h presumed not
available) -- we need to do this to cover cases where 2's complement not
used, since C standard permits 1's complement and sign-bit representations,
otherwise we could just use ((unsigned)-1) >> 1 */
unsigned ZLIB_INTERNAL gz_intmax()
{
unsigned p, q;
p = 1;
do {
q = p;
p <<= 1;
p++;
} while (p > q);
return q >> 1;
}
#endif

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/* gzread.c -- zlib functions for reading gzip files
* Copyright (C) 2004, 2005, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "gzguts.h"
/* Local functions */
local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
local int gz_avail OF((gz_statep));
local int gz_next4 OF((gz_statep, unsigned long *));
local int gz_head OF((gz_statep));
local int gz_decomp OF((gz_statep));
local int gz_make OF((gz_statep));
local int gz_skip OF((gz_statep, z_off64_t));
/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from
state->fd, and update state->eof, state->err, and state->msg as appropriate.
This function needs to loop on read(), since read() is not guaranteed to
read the number of bytes requested, depending on the type of descriptor. */
local int gz_load(state, buf, len, have)
gz_statep state;
unsigned char *buf;
unsigned len;
unsigned *have;
{
int ret;
*have = 0;
do {
ret = read(state->fd, buf + *have, len - *have);
if (ret <= 0)
break;
*have += ret;
} while (*have < len);
if (ret < 0) {
gz_error(state, Z_ERRNO, zstrerror());
return -1;
}
if (ret == 0)
state->eof = 1;
return 0;
}
/* Load up input buffer and set eof flag if last data loaded -- return -1 on
error, 0 otherwise. Note that the eof flag is set when the end of the input
file is reached, even though there may be unused data in the buffer. Once
that data has been used, no more attempts will be made to read the file.
gz_avail() assumes that strm->avail_in == 0. */
local int gz_avail(state)
gz_statep state;
{
z_streamp strm = &(state->strm);
if (state->err != Z_OK)
return -1;
if (state->eof == 0) {
if (gz_load(state, state->in, state->size,
(unsigned *)&(strm->avail_in)) == -1)
return -1;
strm->next_in = state->in;
}
return 0;
}
/* Get next byte from input, or -1 if end or error. */
#define NEXT() ((strm->avail_in == 0 && gz_avail(state) == -1) ? -1 : \
(strm->avail_in == 0 ? -1 : \
(strm->avail_in--, *(strm->next_in)++)))
/* Get a four-byte little-endian integer and return 0 on success and the value
in *ret. Otherwise -1 is returned and *ret is not modified. */
local int gz_next4(state, ret)
gz_statep state;
unsigned long *ret;
{
int ch;
unsigned long val;
z_streamp strm = &(state->strm);
val = NEXT();
val += (unsigned)NEXT() << 8;
val += (unsigned long)NEXT() << 16;
ch = NEXT();
if (ch == -1)
return -1;
val += (unsigned long)ch << 24;
*ret = val;
return 0;
}
/* Look for gzip header, set up for inflate or copy. state->have must be zero.
If this is the first time in, allocate required memory. state->how will be
left unchanged if there is no more input data available, will be set to COPY
if there is no gzip header and direct copying will be performed, or it will
be set to GZIP for decompression, and the gzip header will be skipped so
that the next available input data is the raw deflate stream. If direct
copying, then leftover input data from the input buffer will be copied to
the output buffer. In that case, all further file reads will be directly to
either the output buffer or a user buffer. If decompressing, the inflate
state and the check value will be initialized. gz_head() will return 0 on
success or -1 on failure. Failures may include read errors or gzip header
errors. */
local int gz_head(state)
gz_statep state;
{
z_streamp strm = &(state->strm);
int flags;
unsigned len;
/* allocate read buffers and inflate memory */
if (state->size == 0) {
/* allocate buffers */
state->in = malloc(state->want);
state->out = malloc(state->want << 1);
if (state->in == NULL || state->out == NULL) {
if (state->out != NULL)
free(state->out);
if (state->in != NULL)
free(state->in);
gz_error(state, Z_MEM_ERROR, "out of memory");
return -1;
}
state->size = state->want;
/* allocate inflate memory */
state->strm.zalloc = Z_NULL;
state->strm.zfree = Z_NULL;
state->strm.opaque = Z_NULL;
state->strm.avail_in = 0;
state->strm.next_in = Z_NULL;
if (inflateInit2(&(state->strm), -15) != Z_OK) { /* raw inflate */
free(state->out);
free(state->in);
state->size = 0;
gz_error(state, Z_MEM_ERROR, "out of memory");
return -1;
}
}
/* get some data in the input buffer */
if (strm->avail_in == 0) {
if (gz_avail(state) == -1)
return -1;
if (strm->avail_in == 0)
return 0;
}
/* look for the gzip magic header bytes 31 and 139 */
if (strm->next_in[0] == 31) {
strm->avail_in--;
strm->next_in++;
if (strm->avail_in == 0 && gz_avail(state) == -1)
return -1;
if (strm->avail_in && strm->next_in[0] == 139) {
/* we have a gzip header, woo hoo! */
strm->avail_in--;
strm->next_in++;
/* skip rest of header */
if (NEXT() != 8) { /* compression method */
gz_error(state, Z_DATA_ERROR, "unknown compression method");
return -1;
}
flags = NEXT();
if (flags & 0xe0) { /* reserved flag bits */
gz_error(state, Z_DATA_ERROR, "unknown header flags set");
return -1;
}
NEXT(); /* modification time */
NEXT();
NEXT();
NEXT();
NEXT(); /* extra flags */
NEXT(); /* operating system */
if (flags & 4) { /* extra field */
len = (unsigned)NEXT();
len += (unsigned)NEXT() << 8;
while (len--)
if (NEXT() < 0)
break;
}
if (flags & 8) /* file name */
while (NEXT() > 0)
;
if (flags & 16) /* comment */
while (NEXT() > 0)
;
if (flags & 2) { /* header crc */
NEXT();
NEXT();
}
/* an unexpected end of file is not checked for here -- it will be
noticed on the first request for uncompressed data */
/* set up for decompression */
inflateReset(strm);
strm->adler = crc32(0L, Z_NULL, 0);
state->how = GZIP;
state->direct = 0;
return 0;
}
else {
/* not a gzip file -- save first byte (31) and fall to raw i/o */
state->out[0] = 31;
state->have = 1;
}
}
/* doing raw i/o, save start of raw data for seeking, copy any leftover
input to output -- this assumes that the output buffer is larger than
the input buffer, which also assures space for gzungetc() */
state->raw = state->pos;
state->next = state->out;
if (strm->avail_in) {
memcpy(state->next + state->have, strm->next_in, strm->avail_in);
state->have += strm->avail_in;
strm->avail_in = 0;
}
state->how = COPY;
state->direct = 1;
return 0;
}
/* Decompress from input to the provided next_out and avail_out in the state.
If the end of the compressed data is reached, then verify the gzip trailer
check value and length (modulo 2^32). state->have and state->next are set
to point to the just decompressed data, and the crc is updated. If the
trailer is verified, state->how is reset to LOOK to look for the next gzip
stream or raw data, once state->have is depleted. Returns 0 on success, -1
on failure. Failures may include invalid compressed data or a failed gzip
trailer verification. */
local int gz_decomp(state)
gz_statep state;
{
int ret;
unsigned had;
unsigned long crc, len;
z_streamp strm = &(state->strm);
/* fill output buffer up to end of deflate stream */
had = strm->avail_out;
do {
/* get more input for inflate() */
if (strm->avail_in == 0 && gz_avail(state) == -1)
return -1;
if (strm->avail_in == 0) {
gz_error(state, Z_DATA_ERROR, "unexpected end of file");
return -1;
}
/* decompress and handle errors */
ret = inflate(strm, Z_NO_FLUSH);
if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
gz_error(state, Z_STREAM_ERROR,
"internal error: inflate stream corrupt");
return -1;
}
if (ret == Z_MEM_ERROR) {
gz_error(state, Z_MEM_ERROR, "out of memory");
return -1;
}
if (ret == Z_DATA_ERROR) { /* deflate stream invalid */
gz_error(state, Z_DATA_ERROR,
strm->msg == NULL ? "compressed data error" : strm->msg);
return -1;
}
} while (strm->avail_out && ret != Z_STREAM_END);
/* update available output and crc check value */
state->have = had - strm->avail_out;
state->next = strm->next_out - state->have;
strm->adler = crc32(strm->adler, state->next, state->have);
/* check gzip trailer if at end of deflate stream */
if (ret == Z_STREAM_END) {
if (gz_next4(state, &crc) == -1 || gz_next4(state, &len) == -1) {
gz_error(state, Z_DATA_ERROR, "unexpected end of file");
return -1;
}
if (crc != strm->adler) {
gz_error(state, Z_DATA_ERROR, "incorrect data check");
return -1;
}
if (len != (strm->total_out & 0xffffffffL)) {
gz_error(state, Z_DATA_ERROR, "incorrect length check");
return -1;
}
state->how = LOOK; /* ready for next stream, once have is 0 (leave
state->direct unchanged to remember how) */
}
/* good decompression */
return 0;
}
/* Make data and put in the output buffer. Assumes that state->have == 0.
Data is either copied from the input file or decompressed from the input
file depending on state->how. If state->how is LOOK, then a gzip header is
looked for (and skipped if found) to determine wither to copy or decompress.
Returns -1 on error, otherwise 0. gz_make() will leave state->have as COPY
or GZIP unless the end of the input file has been reached and all data has
been processed. */
local int gz_make(state)
gz_statep state;
{
z_streamp strm = &(state->strm);
if (state->how == LOOK) { /* look for gzip header */
if (gz_head(state) == -1)
return -1;
if (state->have) /* got some data from gz_head() */
return 0;
}
if (state->how == COPY) { /* straight copy */
if (gz_load(state, state->out, state->size << 1, &(state->have)) == -1)
return -1;
state->next = state->out;
}
else if (state->how == GZIP) { /* decompress */
strm->avail_out = state->size << 1;
strm->next_out = state->out;
if (gz_decomp(state) == -1)
return -1;
}
return 0;
}
/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */
local int gz_skip(state, len)
gz_statep state;
z_off64_t len;
{
unsigned n;
/* skip over len bytes or reach end-of-file, whichever comes first */
while (len)
/* skip over whatever is in output buffer */
if (state->have) {
n = GT_OFF(state->have) || (z_off64_t)state->have > len ?
(unsigned)len : state->have;
state->have -= n;
state->next += n;
state->pos += n;
len -= n;
}
/* output buffer empty -- return if we're at the end of the input */
else if (state->eof && state->strm.avail_in == 0)
break;
/* need more data to skip -- load up output buffer */
else {
/* get more output, looking for header if required */
if (gz_make(state) == -1)
return -1;
}
return 0;
}
/* -- see zlib.h -- */
int ZEXPORT gzread(file, buf, len)
gzFile file;
voidp buf;
unsigned len;
{
unsigned got, n;
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're reading and that there's no error */
if (state->mode != GZ_READ || state->err != Z_OK)
return -1;
/* since an int is returned, make sure len fits in one, otherwise return
with an error (this avoids the flaw in the interface) */
if ((int)len < 0) {
gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");
return -1;
}
/* if len is zero, avoid unnecessary operations */
if (len == 0)
return 0;
/* process a skip request */
if (state->seek) {
state->seek = 0;
if (gz_skip(state, state->skip) == -1)
return -1;
}
/* get len bytes to buf, or less than len if at the end */
got = 0;
do {
/* first just try copying data from the output buffer */
if (state->have) {
n = state->have > len ? len : state->have;
memcpy(buf, state->next, n);
state->next += n;
state->have -= n;
}
/* output buffer empty -- return if we're at the end of the input */
else if (state->eof && strm->avail_in == 0)
break;
/* need output data -- for small len or new stream load up our output
buffer */
else if (state->how == LOOK || len < (state->size << 1)) {
/* get more output, looking for header if required */
if (gz_make(state) == -1)
return -1;
continue; /* no progress yet -- go back to memcpy() above */
/* the copy above assures that we will leave with space in the
output buffer, allowing at least one gzungetc() to succeed */
}
/* large len -- read directly into user buffer */
else if (state->how == COPY) { /* read directly */
if (gz_load(state, buf, len, &n) == -1)
return -1;
}
/* large len -- decompress directly into user buffer */
else { /* state->how == GZIP */
strm->avail_out = len;
strm->next_out = buf;
if (gz_decomp(state) == -1)
return -1;
n = state->have;
state->have = 0;
}
/* update progress */
len -= n;
buf = (char *)buf + n;
got += n;
state->pos += n;
} while (len);
/* return number of bytes read into user buffer (will fit in int) */
return (int)got;
}
/* -- see zlib.h -- */
int ZEXPORT gzgetc(file)
gzFile file;
{
int ret;
unsigned char buf[1];
gz_statep state;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
/* check that we're reading and that there's no error */
if (state->mode != GZ_READ || state->err != Z_OK)
return -1;
/* try output buffer (no need to check for skip request) */
if (state->have) {
state->have--;
state->pos++;
return *(state->next)++;
}
/* nothing there -- try gzread() */
ret = gzread(file, buf, 1);
return ret < 1 ? -1 : buf[0];
}
/* -- see zlib.h -- */
int ZEXPORT gzungetc(c, file)
int c;
gzFile file;
{
gz_statep state;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
/* check that we're reading and that there's no error */
if (state->mode != GZ_READ || state->err != Z_OK)
return -1;
/* process a skip request */
if (state->seek) {
state->seek = 0;
if (gz_skip(state, state->skip) == -1)
return -1;
}
/* can't push EOF */
if (c < 0)
return -1;
/* if output buffer empty, put byte at end (allows more pushing) */
if (state->have == 0) {
state->have = 1;
state->next = state->out + (state->size << 1) - 1;
state->next[0] = c;
state->pos--;
return c;
}
/* if no room, give up (must have already done a gzungetc()) */
if (state->have == (state->size << 1)) {
gz_error(state, Z_BUF_ERROR, "out of room to push characters");
return -1;
}
/* slide output data if needed and insert byte before existing data */
if (state->next == state->out) {
unsigned char *src = state->out + state->have;
unsigned char *dest = state->out + (state->size << 1);
while (src > state->out)
*--dest = *--src;
state->next = dest;
}
state->have++;
state->next--;
state->next[0] = c;
state->pos--;
return c;
}
/* -- see zlib.h -- */
char * ZEXPORT gzgets(file, buf, len)
gzFile file;
char *buf;
int len;
{
unsigned left, n;
char *str;
unsigned char *eol;
gz_statep state;
/* check parameters and get internal structure */
if (file == NULL || buf == NULL || len < 1)
return NULL;
state = (gz_statep)file;
/* check that we're reading and that there's no error */
if (state->mode != GZ_READ || state->err != Z_OK)
return NULL;
/* process a skip request */
if (state->seek) {
state->seek = 0;
if (gz_skip(state, state->skip) == -1)
return NULL;
}
/* copy output bytes up to new line or len - 1, whichever comes first --
append a terminating zero to the string (we don't check for a zero in
the contents, let the user worry about that) */
str = buf;
left = (unsigned)len - 1;
if (left) do {
/* assure that something is in the output buffer */
if (state->have == 0) {
if (gz_make(state) == -1)
return NULL; /* error */
if (state->have == 0) { /* end of file */
if (buf == str) /* got bupkus */
return NULL;
break; /* got something -- return it */
}
}
/* look for end-of-line in current output buffer */
n = state->have > left ? left : state->have;
eol = memchr(state->next, '\n', n);
if (eol != NULL)
n = (unsigned)(eol - state->next) + 1;
/* copy through end-of-line, or remainder if not found */
memcpy(buf, state->next, n);
state->have -= n;
state->next += n;
state->pos += n;
left -= n;
buf += n;
} while (left && eol == NULL);
/* found end-of-line or out of space -- terminate string and return it */
buf[0] = 0;
return str;
}
/* -- see zlib.h -- */
int ZEXPORT gzdirect(file)
gzFile file;
{
gz_statep state;
/* get internal structure */
if (file == NULL)
return 0;
state = (gz_statep)file;
/* check that we're reading */
if (state->mode != GZ_READ)
return 0;
/* if the state is not known, but we can find out, then do so (this is
mainly for right after a gzopen() or gzdopen()) */
if (state->how == LOOK && state->have == 0)
(void)gz_head(state);
/* return 1 if reading direct, 0 if decompressing a gzip stream */
return state->direct;
}
/* -- see zlib.h -- */
int ZEXPORT gzclose_r(file)
gzFile file;
{
int ret;
gz_statep state;
/* get internal structure */
if (file == NULL)
return Z_STREAM_ERROR;
state = (gz_statep)file;
/* check that we're reading */
if (state->mode != GZ_READ)
return Z_STREAM_ERROR;
/* free memory and close file */
if (state->size) {
inflateEnd(&(state->strm));
free(state->out);
free(state->in);
}
gz_error(state, Z_OK, NULL);
free(state->path);
ret = close(state->fd);
free(state);
return ret ? Z_ERRNO : Z_OK;
}

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/* gzwrite.c -- zlib functions for writing gzip files
* Copyright (C) 2004, 2005, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "gzguts.h"
/* Local functions */
local int gz_init OF((gz_statep));
local int gz_comp OF((gz_statep, int));
local int gz_zero OF((gz_statep, z_off64_t));
/* Initialize state for writing a gzip file. Mark initialization by setting
state->size to non-zero. Return -1 on failure or 0 on success. */
local int gz_init(state)
gz_statep state;
{
int ret;
z_streamp strm = &(state->strm);
/* allocate input and output buffers */
state->in = malloc(state->want);
state->out = malloc(state->want);
if (state->in == NULL || state->out == NULL) {
if (state->out != NULL)
free(state->out);
if (state->in != NULL)
free(state->in);
gz_error(state, Z_MEM_ERROR, "out of memory");
return -1;
}
/* allocate deflate memory, set up for gzip compression */
strm->zalloc = Z_NULL;
strm->zfree = Z_NULL;
strm->opaque = Z_NULL;
ret = deflateInit2(strm, state->level, Z_DEFLATED,
15 + 16, 8, state->strategy);
if (ret != Z_OK) {
free(state->in);
gz_error(state, Z_MEM_ERROR, "out of memory");
return -1;
}
/* mark state as initialized */
state->size = state->want;
/* initialize write buffer */
strm->avail_out = state->size;
strm->next_out = state->out;
state->next = strm->next_out;
return 0;
}
/* Compress whatever is at avail_in and next_in and write to the output file.
Return -1 if there is an error writing to the output file, otherwise 0.
flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH,
then the deflate() state is reset to start a new gzip stream. */
local int gz_comp(state, flush)
gz_statep state;
int flush;
{
int ret, got;
unsigned have;
z_streamp strm = &(state->strm);
/* allocate memory if this is the first time through */
if (state->size == 0 && gz_init(state) == -1)
return -1;
/* run deflate() on provided input until it produces no more output */
ret = Z_OK;
do {
/* write out current buffer contents if full, or if flushing, but if
doing Z_FINISH then don't write until we get to Z_STREAM_END */
if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
(flush != Z_FINISH || ret == Z_STREAM_END))) {
have = (unsigned)(strm->next_out - state->next);
if (have && ((got = write(state->fd, state->next, have)) < 0 ||
(unsigned)got != have)) {
gz_error(state, Z_ERRNO, zstrerror());
return -1;
}
if (strm->avail_out == 0) {
strm->avail_out = state->size;
strm->next_out = state->out;
}
state->next = strm->next_out;
}
/* compress */
have = strm->avail_out;
ret = deflate(strm, flush);
if (ret == Z_STREAM_ERROR) {
gz_error(state, Z_STREAM_ERROR,
"internal error: deflate stream corrupt");
return -1;
}
have -= strm->avail_out;
} while (have);
/* if that completed a deflate stream, allow another to start */
if (flush == Z_FINISH)
deflateReset(strm);
/* all done, no errors */
return 0;
}
/* Compress len zeros to output. Return -1 on error, 0 on success. */
local int gz_zero(state, len)
gz_statep state;
z_off64_t len;
{
int first;
unsigned n;
z_streamp strm = &(state->strm);
/* consume whatever's left in the input buffer */
if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
return -1;
/* compress len zeros (len guaranteed > 0) */
first = 1;
while (len) {
n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
(unsigned)len : state->size;
if (first) {
memset(state->in, 0, n);
first = 0;
}
strm->avail_in = n;
strm->next_in = state->in;
state->pos += n;
if (gz_comp(state, Z_NO_FLUSH) == -1)
return -1;
len -= n;
}
return 0;
}
/* -- see zlib.h -- */
int ZEXPORT gzwrite(file, buf, len)
gzFile file;
voidpc buf;
unsigned len;
{
unsigned put = len;
unsigned n;
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return 0;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return 0;
/* since an int is returned, make sure len fits in one, otherwise return
with an error (this avoids the flaw in the interface) */
if ((int)len < 0) {
gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");
return 0;
}
/* if len is zero, avoid unnecessary operations */
if (len == 0)
return 0;
/* allocate memory if this is the first time through */
if (state->size == 0 && gz_init(state) == -1)
return 0;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return 0;
}
/* for small len, copy to input buffer, otherwise compress directly */
if (len < state->size) {
/* copy to input buffer, compress when full */
do {
if (strm->avail_in == 0)
strm->next_in = state->in;
n = state->size - strm->avail_in;
if (n > len)
n = len;
memcpy(strm->next_in + strm->avail_in, buf, n);
strm->avail_in += n;
state->pos += n;
buf = (char *)buf + n;
len -= n;
if (len && gz_comp(state, Z_NO_FLUSH) == -1)
return 0;
} while (len);
}
else {
/* consume whatever's left in the input buffer */
if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
return 0;
/* directly compress user buffer to file */
strm->avail_in = len;
strm->next_in = (voidp)buf;
state->pos += len;
if (gz_comp(state, Z_NO_FLUSH) == -1)
return 0;
}
/* input was all buffered or compressed (put will fit in int) */
return (int)put;
}
/* -- see zlib.h -- */
int ZEXPORT gzputc(file, c)
gzFile file;
int c;
{
unsigned char buf[1];
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return -1;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return -1;
}
/* try writing to input buffer for speed (state->size == 0 if buffer not
initialized) */
if (strm->avail_in < state->size) {
if (strm->avail_in == 0)
strm->next_in = state->in;
strm->next_in[strm->avail_in++] = c;
state->pos++;
return c;
}
/* no room in buffer or not initialized, use gz_write() */
buf[0] = c;
if (gzwrite(file, buf, 1) != 1)
return -1;
return c;
}
/* -- see zlib.h -- */
int ZEXPORT gzputs(file, str)
gzFile file;
const char *str;
{
int ret;
unsigned len;
/* write string */
len = (unsigned)strlen(str);
ret = gzwrite(file, str, len);
return ret == 0 && len != 0 ? -1 : ret;
}
#ifdef STDC
#include <stdarg.h>
/* -- see zlib.h -- */
int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)
{
int size, len;
gz_statep state;
z_streamp strm;
va_list va;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return 0;
/* make sure we have some buffer space */
if (state->size == 0 && gz_init(state) == -1)
return 0;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return 0;
}
/* consume whatever's left in the input buffer */
if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
return 0;
/* do the printf() into the input buffer, put length in len */
size = (int)(state->size);
state->in[size - 1] = 0;
va_start(va, format);
#ifdef NO_vsnprintf
# ifdef HAS_vsprintf_void
(void)vsprintf(state->in, format, va);
va_end(va);
for (len = 0; len < size; len++)
if (state->in[len] == 0) break;
# else
len = vsprintf(state->in, format, va);
va_end(va);
# endif
#else
# ifdef HAS_vsnprintf_void
(void)vsnprintf(state->in, size, format, va);
va_end(va);
len = strlen(state->in);
# else
len = vsnprintf((char *)(state->in), size, format, va);
va_end(va);
# endif
#endif
/* check that printf() results fit in buffer */
if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
return 0;
/* update buffer and position, defer compression until needed */
strm->avail_in = (unsigned)len;
strm->next_in = state->in;
state->pos += len;
return len;
}
#else /* !STDC */
/* -- see zlib.h -- */
int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
gzFile file;
const char *format;
int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
{
int size, len;
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return 0;
/* make sure we have some buffer space */
if (state->size == 0 && gz_init(state) == -1)
return 0;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return 0;
}
/* consume whatever's left in the input buffer */
if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
return 0;
/* do the printf() into the input buffer, put length in len */
size = (int)(state->size);
state->in[size - 1] = 0;
#ifdef NO_snprintf
# ifdef HAS_sprintf_void
sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,
a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
for (len = 0; len < size; len++)
if (state->in[len] == 0) break;
# else
len = sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,
a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
# endif
#else
# ifdef HAS_snprintf_void
snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,
a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
len = strlen(state->in);
# else
len = snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,
a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
# endif
#endif
/* check that printf() results fit in buffer */
if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
return 0;
/* update buffer and position, defer compression until needed */
strm->avail_in = (unsigned)len;
strm->next_in = state->in;
state->pos += len;
return len;
}
#endif
/* -- see zlib.h -- */
int ZEXPORT gzflush(file, flush)
gzFile file;
int flush;
{
gz_statep state;
/* get internal structure */
if (file == NULL)
return -1;
state = (gz_statep)file;
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return Z_STREAM_ERROR;
/* check flush parameter */
if (flush < 0 || flush > Z_FINISH)
return Z_STREAM_ERROR;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return -1;
}
/* compress remaining data with requested flush */
gz_comp(state, flush);
return state->err;
}
/* -- see zlib.h -- */
int ZEXPORT gzsetparams(file, level, strategy)
gzFile file;
int level;
int strategy;
{
gz_statep state;
z_streamp strm;
/* get internal structure */
if (file == NULL)
return Z_STREAM_ERROR;
state = (gz_statep)file;
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
return Z_STREAM_ERROR;
/* if no change is requested, then do nothing */
if (level == state->level && strategy == state->strategy)
return Z_OK;
/* check for seek request */
if (state->seek) {
state->seek = 0;
if (gz_zero(state, state->skip) == -1)
return -1;
}
/* change compression parameters for subsequent input */
if (state->size) {
/* flush previous input with previous parameters before changing */
if (strm->avail_in && gz_comp(state, Z_PARTIAL_FLUSH) == -1)
return state->err;
deflateParams(strm, level, strategy);
}
state->level = level;
state->strategy = strategy;
return Z_OK;
}
/* -- see zlib.h -- */
int ZEXPORT gzclose_w(file)
gzFile file;
{
int ret = 0;
gz_statep state;
/* get internal structure */
if (file == NULL)
return Z_STREAM_ERROR;
state = (gz_statep)file;
/* check that we're writing */
if (state->mode != GZ_WRITE)
return Z_STREAM_ERROR;
/* check for seek request */
if (state->seek) {
state->seek = 0;
ret += gz_zero(state, state->skip);
}
/* flush, free memory, and close file */
ret += gz_comp(state, Z_FINISH);
(void)deflateEnd(&(state->strm));
free(state->out);
free(state->in);
gz_error(state, Z_OK, NULL);
free(state->path);
ret += close(state->fd);
free(state);
return ret ? Z_ERRNO : Z_OK;
}

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/* infback.c -- inflate using a call-back interface
* Copyright (C) 1995-2009 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
This code is largely copied from inflate.c. Normally either infback.o or
inflate.o would be linked into an application--not both. The interface
with inffast.c is retained so that optimized assembler-coded versions of
inflate_fast() can be used with either inflate.c or infback.c.
*/
#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
/* function prototypes */
local void fixedtables OF((struct inflate_state FAR *state));
/*
strm provides memory allocation functions in zalloc and zfree, or
Z_NULL to use the library memory allocation functions.
windowBits is in the range 8..15, and window is a user-supplied
window and output buffer that is 2**windowBits bytes.
*/
int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
z_streamp strm;
int windowBits;
unsigned char FAR *window;
const char *version;
int stream_size;
{
struct inflate_state FAR *state;
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
stream_size != (int)(sizeof(z_stream)))
return Z_VERSION_ERROR;
if (strm == Z_NULL || window == Z_NULL ||
windowBits < 8 || windowBits > 15)
return Z_STREAM_ERROR;
strm->msg = Z_NULL; /* in case we return an error */
if (strm->zalloc == (alloc_func)0) {
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
}
if (strm->zfree == (free_func)0) strm->zfree = zcfree;
state = (struct inflate_state FAR *)ZALLOC(strm, 1,
sizeof(struct inflate_state));
if (state == Z_NULL) return Z_MEM_ERROR;
Tracev((stderr, "inflate: allocated\n"));
strm->state = (struct internal_state FAR *)state;
state->dmax = 32768U;
state->wbits = windowBits;
state->wsize = 1U << windowBits;
state->window = window;
state->wnext = 0;
state->whave = 0;
return Z_OK;
}
/*
Return state with length and distance decoding tables and index sizes set to
fixed code decoding. Normally this returns fixed tables from inffixed.h.
If BUILDFIXED is defined, then instead this routine builds the tables the
first time it's called, and returns those tables the first time and
thereafter. This reduces the size of the code by about 2K bytes, in
exchange for a little execution time. However, BUILDFIXED should not be
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
local void fixedtables(state)
struct inflate_state FAR *state;
{
#ifdef BUILDFIXED
static int virgin = 1;
static code *lenfix, *distfix;
static code fixed[544];
/* build fixed huffman tables if first call (may not be thread safe) */
if (virgin) {
unsigned sym, bits;
static code *next;
/* literal/length table */
sym = 0;
while (sym < 144) state->lens[sym++] = 8;
while (sym < 256) state->lens[sym++] = 9;
while (sym < 280) state->lens[sym++] = 7;
while (sym < 288) state->lens[sym++] = 8;
next = fixed;
lenfix = next;
bits = 9;
inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
/* distance table */
sym = 0;
while (sym < 32) state->lens[sym++] = 5;
distfix = next;
bits = 5;
inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
/* do this just once */
virgin = 0;
}
#else /* !BUILDFIXED */
# include "inffixed.h"
#endif /* BUILDFIXED */
state->lencode = lenfix;
state->lenbits = 9;
state->distcode = distfix;
state->distbits = 5;
}
/* Macros for inflateBack(): */
/* Load returned state from inflate_fast() */
#define LOAD() \
do { \
put = strm->next_out; \
left = strm->avail_out; \
next = strm->next_in; \
have = strm->avail_in; \
hold = state->hold; \
bits = state->bits; \
} while (0)
/* Set state from registers for inflate_fast() */
#define RESTORE() \
do { \
strm->next_out = put; \
strm->avail_out = left; \
strm->next_in = next; \
strm->avail_in = have; \
state->hold = hold; \
state->bits = bits; \
} while (0)
/* Clear the input bit accumulator */
#define INITBITS() \
do { \
hold = 0; \
bits = 0; \
} while (0)
/* Assure that some input is available. If input is requested, but denied,
then return a Z_BUF_ERROR from inflateBack(). */
#define PULL() \
do { \
if (have == 0) { \
have = in(in_desc, &next); \
if (have == 0) { \
next = Z_NULL; \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/* Get a byte of input into the bit accumulator, or return from inflateBack()
with an error if there is no input available. */
#define PULLBYTE() \
do { \
PULL(); \
have--; \
hold += (unsigned long)(*next++) << bits; \
bits += 8; \
} while (0)
/* Assure that there are at least n bits in the bit accumulator. If there is
not enough available input to do that, then return from inflateBack() with
an error. */
#define NEEDBITS(n) \
do { \
while (bits < (unsigned)(n)) \
PULLBYTE(); \
} while (0)
/* Return the low n bits of the bit accumulator (n < 16) */
#define BITS(n) \
((unsigned)hold & ((1U << (n)) - 1))
/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
do { \
hold >>= (n); \
bits -= (unsigned)(n); \
} while (0)
/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
do { \
hold >>= bits & 7; \
bits -= bits & 7; \
} while (0)
/* Assure that some output space is available, by writing out the window
if it's full. If the write fails, return from inflateBack() with a
Z_BUF_ERROR. */
#define ROOM() \
do { \
if (left == 0) { \
put = state->window; \
left = state->wsize; \
state->whave = left; \
if (out(out_desc, put, left)) { \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/*
strm provides the memory allocation functions and window buffer on input,
and provides information on the unused input on return. For Z_DATA_ERROR
returns, strm will also provide an error message.
in() and out() are the call-back input and output functions. When
inflateBack() needs more input, it calls in(). When inflateBack() has
filled the window with output, or when it completes with data in the
window, it calls out() to write out the data. The application must not
change the provided input until in() is called again or inflateBack()
returns. The application must not change the window/output buffer until
inflateBack() returns.
in() and out() are called with a descriptor parameter provided in the
inflateBack() call. This parameter can be a structure that provides the
information required to do the read or write, as well as accumulated
information on the input and output such as totals and check values.
in() should return zero on failure. out() should return non-zero on
failure. If either in() or out() fails, than inflateBack() returns a
Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
was in() or out() that caused in the error. Otherwise, inflateBack()
returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
error, or Z_MEM_ERROR if it could not allocate memory for the state.
inflateBack() can also return Z_STREAM_ERROR if the input parameters
are not correct, i.e. strm is Z_NULL or the state was not initialized.
*/
int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
z_streamp strm;
in_func in;
void FAR *in_desc;
out_func out;
void FAR *out_desc;
{
struct inflate_state FAR *state;
unsigned char FAR *next; /* next input */
unsigned char FAR *put; /* next output */
unsigned have, left; /* available input and output */
unsigned long hold; /* bit buffer */
unsigned bits; /* bits in bit buffer */
unsigned copy; /* number of stored or match bytes to copy */
unsigned char FAR *from; /* where to copy match bytes from */
code here; /* current decoding table entry */
code last; /* parent table entry */
unsigned len; /* length to copy for repeats, bits to drop */
int ret; /* return code */
static const unsigned short order[19] = /* permutation of code lengths */
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
/* Check that the strm exists and that the state was initialized */
if (strm == Z_NULL || strm->state == Z_NULL)
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
/* Reset the state */
strm->msg = Z_NULL;
state->mode = TYPE;
state->last = 0;
state->whave = 0;
next = strm->next_in;
have = next != Z_NULL ? strm->avail_in : 0;
hold = 0;
bits = 0;
put = state->window;
left = state->wsize;
/* Inflate until end of block marked as last */
for (;;)
switch (state->mode) {
case TYPE:
/* determine and dispatch block type */
if (state->last) {
BYTEBITS();
state->mode = DONE;
break;
}
NEEDBITS(3);
state->last = BITS(1);
DROPBITS(1);
switch (BITS(2)) {
case 0: /* stored block */
Tracev((stderr, "inflate: stored block%s\n",
state->last ? " (last)" : ""));
state->mode = STORED;
break;
case 1: /* fixed block */
fixedtables(state);
Tracev((stderr, "inflate: fixed codes block%s\n",
state->last ? " (last)" : ""));
state->mode = LEN; /* decode codes */
break;
case 2: /* dynamic block */
Tracev((stderr, "inflate: dynamic codes block%s\n",
state->last ? " (last)" : ""));
state->mode = TABLE;
break;
case 3:
strm->msg = (char *)"invalid block type";
state->mode = BAD;
}
DROPBITS(2);
break;
case STORED:
/* get and verify stored block length */
BYTEBITS(); /* go to byte boundary */
NEEDBITS(32);
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
strm->msg = (char *)"invalid stored block lengths";
state->mode = BAD;
break;
}
state->length = (unsigned)hold & 0xffff;
Tracev((stderr, "inflate: stored length %u\n",
state->length));
INITBITS();
/* copy stored block from input to output */
while (state->length != 0) {
copy = state->length;
PULL();
ROOM();
if (copy > have) copy = have;
if (copy > left) copy = left;
zmemcpy(put, next, copy);
have -= copy;
next += copy;
left -= copy;
put += copy;
state->length -= copy;
}
Tracev((stderr, "inflate: stored end\n"));
state->mode = TYPE;
break;
case TABLE:
/* get dynamic table entries descriptor */
NEEDBITS(14);
state->nlen = BITS(5) + 257;
DROPBITS(5);
state->ndist = BITS(5) + 1;
DROPBITS(5);
state->ncode = BITS(4) + 4;
DROPBITS(4);
#ifndef PKZIP_BUG_WORKAROUND
if (state->nlen > 286 || state->ndist > 30) {
strm->msg = (char *)"too many length or distance symbols";
state->mode = BAD;
break;
}
#endif
Tracev((stderr, "inflate: table sizes ok\n"));
/* get code length code lengths (not a typo) */
state->have = 0;
while (state->have < state->ncode) {
NEEDBITS(3);
state->lens[order[state->have++]] = (unsigned short)BITS(3);
DROPBITS(3);
}
while (state->have < 19)
state->lens[order[state->have++]] = 0;
state->next = state->codes;
state->lencode = (code const FAR *)(state->next);
state->lenbits = 7;
ret = inflate_table(CODES, state->lens, 19, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid code lengths set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: code lengths ok\n"));
/* get length and distance code code lengths */
state->have = 0;
while (state->have < state->nlen + state->ndist) {
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.val < 16) {
NEEDBITS(here.bits);
DROPBITS(here.bits);
state->lens[state->have++] = here.val;
}
else {
if (here.val == 16) {
NEEDBITS(here.bits + 2);
DROPBITS(here.bits);
if (state->have == 0) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
len = (unsigned)(state->lens[state->have - 1]);
copy = 3 + BITS(2);
DROPBITS(2);
}
else if (here.val == 17) {
NEEDBITS(here.bits + 3);
DROPBITS(here.bits);
len = 0;
copy = 3 + BITS(3);
DROPBITS(3);
}
else {
NEEDBITS(here.bits + 7);
DROPBITS(here.bits);
len = 0;
copy = 11 + BITS(7);
DROPBITS(7);
}
if (state->have + copy > state->nlen + state->ndist) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
while (copy--)
state->lens[state->have++] = (unsigned short)len;
}
}
/* handle error breaks in while */
if (state->mode == BAD) break;
/* check for end-of-block code (better have one) */
if (state->lens[256] == 0) {
strm->msg = (char *)"invalid code -- missing end-of-block";
state->mode = BAD;
break;
}
/* build code tables -- note: do not change the lenbits or distbits
values here (9 and 6) without reading the comments in inftrees.h
concerning the ENOUGH constants, which depend on those values */
state->next = state->codes;
state->lencode = (code const FAR *)(state->next);
state->lenbits = 9;
ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid literal/lengths set";
state->mode = BAD;
break;
}
state->distcode = (code const FAR *)(state->next);
state->distbits = 6;
ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
&(state->next), &(state->distbits), state->work);
if (ret) {
strm->msg = (char *)"invalid distances set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: codes ok\n"));
state->mode = LEN;
case LEN:
/* use inflate_fast() if we have enough input and output */
if (have >= 6 && left >= 258) {
RESTORE();
if (state->whave < state->wsize)
state->whave = state->wsize - left;
inflate_fast(strm, state->wsize);
LOAD();
break;
}
/* get a literal, length, or end-of-block code */
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.op && (here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->lencode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
state->length = (unsigned)here.val;
/* process literal */
if (here.op == 0) {
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
ROOM();
*put++ = (unsigned char)(state->length);
left--;
state->mode = LEN;
break;
}
/* process end of block */
if (here.op & 32) {
Tracevv((stderr, "inflate: end of block\n"));
state->mode = TYPE;
break;
}
/* invalid code */
if (here.op & 64) {
strm->msg = (char *)"invalid literal/length code";
state->mode = BAD;
break;
}
/* length code -- get extra bits, if any */
state->extra = (unsigned)(here.op) & 15;
if (state->extra != 0) {
NEEDBITS(state->extra);
state->length += BITS(state->extra);
DROPBITS(state->extra);
}
Tracevv((stderr, "inflate: length %u\n", state->length));
/* get distance code */
for (;;) {
here = state->distcode[BITS(state->distbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if ((here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->distcode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
if (here.op & 64) {
strm->msg = (char *)"invalid distance code";
state->mode = BAD;
break;
}
state->offset = (unsigned)here.val;
/* get distance extra bits, if any */
state->extra = (unsigned)(here.op) & 15;
if (state->extra != 0) {
NEEDBITS(state->extra);
state->offset += BITS(state->extra);
DROPBITS(state->extra);
}
if (state->offset > state->wsize - (state->whave < state->wsize ?
left : 0)) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
Tracevv((stderr, "inflate: distance %u\n", state->offset));
/* copy match from window to output */
do {
ROOM();
copy = state->wsize - state->offset;
if (copy < left) {
from = put + copy;
copy = left - copy;
}
else {
from = put - state->offset;
copy = left;
}
if (copy > state->length) copy = state->length;
state->length -= copy;
left -= copy;
do {
*put++ = *from++;
} while (--copy);
} while (state->length != 0);
break;
case DONE:
/* inflate stream terminated properly -- write leftover output */
ret = Z_STREAM_END;
if (left < state->wsize) {
if (out(out_desc, state->window, state->wsize - left))
ret = Z_BUF_ERROR;
}
goto inf_leave;
case BAD:
ret = Z_DATA_ERROR;
goto inf_leave;
default: /* can't happen, but makes compilers happy */
ret = Z_STREAM_ERROR;
goto inf_leave;
}
/* Return unused input */
inf_leave:
strm->next_in = next;
strm->avail_in = have;
return ret;
}
int ZEXPORT inflateBackEnd(strm)
z_streamp strm;
{
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
return Z_STREAM_ERROR;
ZFREE(strm, strm->state);
strm->state = Z_NULL;
Tracev((stderr, "inflate: end\n"));
return Z_OK;
}

340
libs/libwebsockets/win32port/zlib/inffast.c Normal file
View File

@ -0,0 +1,340 @@
/* inffast.c -- fast decoding
* Copyright (C) 1995-2008, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
#ifndef ASMINF
/* Allow machine dependent optimization for post-increment or pre-increment.
Based on testing to date,
Pre-increment preferred for:
- PowerPC G3 (Adler)
- MIPS R5000 (Randers-Pehrson)
Post-increment preferred for:
- none
No measurable difference:
- Pentium III (Anderson)
- M68060 (Nikl)
*/
#ifdef POSTINC
# define OFF 0
# define PUP(a) *(a)++
#else
# define OFF 1
# define PUP(a) *++(a)
#endif
/*
Decode literal, length, and distance codes and write out the resulting
literal and match bytes until either not enough input or output is
available, an end-of-block is encountered, or a data error is encountered.
When large enough input and output buffers are supplied to inflate(), for
example, a 16K input buffer and a 64K output buffer, more than 95% of the
inflate execution time is spent in this routine.
Entry assumptions:
state->mode == LEN
strm->avail_in >= 6
strm->avail_out >= 258
start >= strm->avail_out
state->bits < 8
On return, state->mode is one of:
LEN -- ran out of enough output space or enough available input
TYPE -- reached end of block code, inflate() to interpret next block
BAD -- error in block data
Notes:
- The maximum input bits used by a length/distance pair is 15 bits for the
length code, 5 bits for the length extra, 15 bits for the distance code,
and 13 bits for the distance extra. This totals 48 bits, or six bytes.
Therefore if strm->avail_in >= 6, then there is enough input to avoid
checking for available input while decoding.
- The maximum bytes that a single length/distance pair can output is 258
bytes, which is the maximum length that can be coded. inflate_fast()
requires strm->avail_out >= 258 for each loop to avoid checking for
output space.
*/
void ZLIB_INTERNAL inflate_fast(strm, start)
z_streamp strm;
unsigned start; /* inflate()'s starting value for strm->avail_out */
{
struct inflate_state FAR *state;
unsigned char FAR *in; /* local strm->next_in */
unsigned char FAR *last; /* while in < last, enough input available */
unsigned char FAR *out; /* local strm->next_out */
unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
unsigned char FAR *end; /* while out < end, enough space available */
#ifdef INFLATE_STRICT
unsigned dmax; /* maximum distance from zlib header */
#endif
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
unsigned long hold; /* local strm->hold */
unsigned bits; /* local strm->bits */
code const FAR *lcode; /* local strm->lencode */
code const FAR *dcode; /* local strm->distcode */
unsigned lmask; /* mask for first level of length codes */
unsigned dmask; /* mask for first level of distance codes */
code here; /* retrieved table entry */
unsigned op; /* code bits, operation, extra bits, or */
/* window position, window bytes to copy */
unsigned len; /* match length, unused bytes */
unsigned dist; /* match distance */
unsigned char FAR *from; /* where to copy match from */
/* copy state to local variables */
state = (struct inflate_state FAR *)strm->state;
in = strm->next_in - OFF;
last = in + (strm->avail_in - 5);
out = strm->next_out - OFF;
beg = out - (start - strm->avail_out);
end = out + (strm->avail_out - 257);
#ifdef INFLATE_STRICT
dmax = state->dmax;
#endif
wsize = state->wsize;
whave = state->whave;
wnext = state->wnext;
window = state->window;
hold = state->hold;
bits = state->bits;
lcode = state->lencode;
dcode = state->distcode;
lmask = (1U << state->lenbits) - 1;
dmask = (1U << state->distbits) - 1;
/* decode literals and length/distances until end-of-block or not enough
input data or output space */
do {
if (bits < 15) {
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
}
here = lcode[hold & lmask];
dolen:
op = (unsigned)(here.bits);
hold >>= op;
bits -= op;
op = (unsigned)(here.op);
if (op == 0) { /* literal */
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
PUP(out) = (unsigned char)(here.val);
}
else if (op & 16) { /* length base */
len = (unsigned)(here.val);
op &= 15; /* number of extra bits */
if (op) {
if (bits < op) {
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
}
len += (unsigned)hold & ((1U << op) - 1);
hold >>= op;
bits -= op;
}
Tracevv((stderr, "inflate: length %u\n", len));
if (bits < 15) {
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
}
here = dcode[hold & dmask];
dodist:
op = (unsigned)(here.bits);
hold >>= op;
bits -= op;
op = (unsigned)(here.op);
if (op & 16) { /* distance base */
dist = (unsigned)(here.val);
op &= 15; /* number of extra bits */
if (bits < op) {
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
if (bits < op) {
hold += (unsigned long)(PUP(in)) << bits;
bits += 8;
}
}
dist += (unsigned)hold & ((1U << op) - 1);
#ifdef INFLATE_STRICT
if (dist > dmax) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#endif
hold >>= op;
bits -= op;
Tracevv((stderr, "inflate: distance %u\n", dist));
op = (unsigned)(out - beg); /* max distance in output */
if (dist > op) { /* see if copy from window */
op = dist - op; /* distance back in window */
if (op > whave) {
if (state->sane) {
strm->msg =
(char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
if (len <= op - whave) {
do {
PUP(out) = 0;
} while (--len);
continue;
}
len -= op - whave;
do {
PUP(out) = 0;
} while (--op > whave);
if (op == 0) {
from = out - dist;
do {
PUP(out) = PUP(from);
} while (--len);
continue;
}
#endif
}
from = window - OFF;
if (wnext == 0) { /* very common case */
from += wsize - op;
if (op < len) { /* some from window */
len -= op;
do {
PUP(out) = PUP(from);
} while (--op);
from = out - dist; /* rest from output */
}
}
else if (wnext < op) { /* wrap around window */
from += wsize + wnext - op;
op -= wnext;
if (op < len) { /* some from end of window */
len -= op;
do {
PUP(out) = PUP(from);
} while (--op);
from = window - OFF;
if (wnext < len) { /* some from start of window */
op = wnext;
len -= op;
do {
PUP(out) = PUP(from);
} while (--op);
from = out - dist; /* rest from output */
}
}
}
else { /* contiguous in window */
from += wnext - op;
if (op < len) { /* some from window */
len -= op;
do {
PUP(out) = PUP(from);
} while (--op);
from = out - dist; /* rest from output */
}
}
while (len > 2) {
PUP(out) = PUP(from);
PUP(out) = PUP(from);
PUP(out) = PUP(from);
len -= 3;
}
if (len) {
PUP(out) = PUP(from);
if (len > 1)
PUP(out) = PUP(from);
}
}
else {
from = out - dist; /* copy direct from output */
do { /* minimum length is three */
PUP(out) = PUP(from);
PUP(out) = PUP(from);
PUP(out) = PUP(from);
len -= 3;
} while (len > 2);
if (len) {
PUP(out) = PUP(from);
if (len > 1)
PUP(out) = PUP(from);
}
}
}
else if ((op & 64) == 0) { /* 2nd level distance code */
here = dcode[here.val + (hold & ((1U << op) - 1))];
goto dodist;
}
else {
strm->msg = (char *)"invalid distance code";
state->mode = BAD;
break;
}
}
else if ((op & 64) == 0) { /* 2nd level length code */
here = lcode[here.val + (hold & ((1U << op) - 1))];
goto dolen;
}
else if (op & 32) { /* end-of-block */
Tracevv((stderr, "inflate: end of block\n"));
state->mode = TYPE;
break;
}
else {
strm->msg = (char *)"invalid literal/length code";
state->mode = BAD;
break;
}
} while (in < last && out < end);
/* return unused bytes (on entry, bits < 8, so in won't go too far back) */
len = bits >> 3;
in -= len;
bits -= len << 3;
hold &= (1U << bits) - 1;
/* update state and return */
strm->next_in = in + OFF;
strm->next_out = out + OFF;
strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
strm->avail_out = (unsigned)(out < end ?
257 + (end - out) : 257 - (out - end));
state->hold = hold;
state->bits = bits;
return;
}
/*
inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
- Using bit fields for code structure
- Different op definition to avoid & for extra bits (do & for table bits)
- Three separate decoding do-loops for direct, window, and wnext == 0
- Special case for distance > 1 copies to do overlapped load and store copy
- Explicit branch predictions (based on measured branch probabilities)
- Deferring match copy and interspersed it with decoding subsequent codes
- Swapping literal/length else
- Swapping window/direct else
- Larger unrolled copy loops (three is about right)
- Moving len -= 3 statement into middle of loop
*/
#endif /* !ASMINF */

11
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/* inffast.h -- header to use inffast.c
* Copyright (C) 1995-2003, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));

94
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/* inffixed.h -- table for decoding fixed codes
* Generated automatically by makefixed().
*/
/* WARNING: this file should *not* be used by applications. It
is part of the implementation of the compression library and
is subject to change. Applications should only use zlib.h.
*/
static const code lenfix[512] = {
{96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
{0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
{0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
{0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
{0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
{21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
{0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
{0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
{18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
{0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
{0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
{0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
{20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
{0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
{0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
{16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
{0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
{0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
{0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
{0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
{0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
{0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
{0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
{17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
{0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
{0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
{0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
{19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
{0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
{0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
{16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
{0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
{0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
{0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
{0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
{20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
{0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
{0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
{17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
{0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
{0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
{0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
{20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
{0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
{0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
{0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
{16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
{0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
{0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
{0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
{0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
{0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
{0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
{0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
{16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
{0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
{0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
{0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
{19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
{0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
{0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
{16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
{0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
{0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
{0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
{0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
{64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
{0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
{0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
{18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
{0,9,255}
};
static const code distfix[32] = {
{16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
{21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
{18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
{19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
{16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
{22,5,193},{64,5,0}
};

1480
libs/libwebsockets/win32port/zlib/inflate.c Normal file
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122
libs/libwebsockets/win32port/zlib/inflate.h Normal file
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/* inflate.h -- internal inflate state definition
* Copyright (C) 1995-2009 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* define NO_GZIP when compiling if you want to disable gzip header and
trailer decoding by inflate(). NO_GZIP would be used to avoid linking in
the crc code when it is not needed. For shared libraries, gzip decoding
should be left enabled. */
#ifndef NO_GZIP
# define GUNZIP
#endif
/* Possible inflate modes between inflate() calls */
typedef enum {
HEAD, /* i: waiting for magic header */
FLAGS, /* i: waiting for method and flags (gzip) */
TIME, /* i: waiting for modification time (gzip) */
OS, /* i: waiting for extra flags and operating system (gzip) */
EXLEN, /* i: waiting for extra length (gzip) */
EXTRA, /* i: waiting for extra bytes (gzip) */
NAME, /* i: waiting for end of file name (gzip) */
COMMENT, /* i: waiting for end of comment (gzip) */
HCRC, /* i: waiting for header crc (gzip) */
DICTID, /* i: waiting for dictionary check value */
DICT, /* waiting for inflateSetDictionary() call */
TYPE, /* i: waiting for type bits, including last-flag bit */
TYPEDO, /* i: same, but skip check to exit inflate on new block */
STORED, /* i: waiting for stored size (length and complement) */
COPY_, /* i/o: same as COPY below, but only first time in */
COPY, /* i/o: waiting for input or output to copy stored block */
TABLE, /* i: waiting for dynamic block table lengths */
LENLENS, /* i: waiting for code length code lengths */
CODELENS, /* i: waiting for length/lit and distance code lengths */
LEN_, /* i: same as LEN below, but only first time in */
LEN, /* i: waiting for length/lit/eob code */
LENEXT, /* i: waiting for length extra bits */
DIST, /* i: waiting for distance code */
DISTEXT, /* i: waiting for distance extra bits */
MATCH, /* o: waiting for output space to copy string */
LIT, /* o: waiting for output space to write literal */
CHECK, /* i: waiting for 32-bit check value */
LENGTH, /* i: waiting for 32-bit length (gzip) */
DONE, /* finished check, done -- remain here until reset */
BAD, /* got a data error -- remain here until reset */
MEM, /* got an inflate() memory error -- remain here until reset */
SYNC /* looking for synchronization bytes to restart inflate() */
} inflate_mode;
/*
State transitions between above modes -
(most modes can go to BAD or MEM on error -- not shown for clarity)
Process header:
HEAD -> (gzip) or (zlib) or (raw)
(gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
HCRC -> TYPE
(zlib) -> DICTID or TYPE
DICTID -> DICT -> TYPE
(raw) -> TYPEDO
Read deflate blocks:
TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
STORED -> COPY_ -> COPY -> TYPE
TABLE -> LENLENS -> CODELENS -> LEN_
LEN_ -> LEN
Read deflate codes in fixed or dynamic block:
LEN -> LENEXT or LIT or TYPE
LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
LIT -> LEN
Process trailer:
CHECK -> LENGTH -> DONE
*/
/* state maintained between inflate() calls. Approximately 10K bytes. */
struct inflate_state {
inflate_mode mode; /* current inflate mode */
int last; /* true if processing last block */
int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
int havedict; /* true if dictionary provided */
int flags; /* gzip header method and flags (0 if zlib) */
unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
unsigned long check; /* protected copy of check value */
unsigned long total; /* protected copy of output count */
gz_headerp head; /* where to save gzip header information */
/* sliding window */
unsigned wbits; /* log base 2 of requested window size */
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if needed */
/* bit accumulator */
unsigned long hold; /* input bit accumulator */
unsigned bits; /* number of bits in "in" */
/* for string and stored block copying */
unsigned length; /* literal or length of data to copy */
unsigned offset; /* distance back to copy string from */
/* for table and code decoding */
unsigned extra; /* extra bits needed */
/* fixed and dynamic code tables */
code const FAR *lencode; /* starting table for length/literal codes */
code const FAR *distcode; /* starting table for distance codes */
unsigned lenbits; /* index bits for lencode */
unsigned distbits; /* index bits for distcode */
/* dynamic table building */
unsigned ncode; /* number of code length code lengths */
unsigned nlen; /* number of length code lengths */
unsigned ndist; /* number of distance code lengths */
unsigned have; /* number of code lengths in lens[] */
code FAR *next; /* next available space in codes[] */
unsigned short lens[320]; /* temporary storage for code lengths */
unsigned short work[288]; /* work area for code table building */
code codes[ENOUGH]; /* space for code tables */
int sane; /* if false, allow invalid distance too far */
int back; /* bits back of last unprocessed length/lit */
unsigned was; /* initial length of match */
};

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libs/libwebsockets/win32port/zlib/inftrees.c Normal file
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/* inftrees.c -- generate Huffman trees for efficient decoding
* Copyright (C) 1995-2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "inftrees.h"
#define MAXBITS 15
const char inflate_copyright[] =
" inflate 1.2.5 Copyright 1995-2010 Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
include such an acknowledgment, I would appreciate that you keep this
copyright string in the executable of your product.
*/
/*
Build a set of tables to decode the provided canonical Huffman code.
The code lengths are lens[0..codes-1]. The result starts at *table,
whose indices are 0..2^bits-1. work is a writable array of at least
lens shorts, which is used as a work area. type is the type of code
to be generated, CODES, LENS, or DISTS. On return, zero is success,
-1 is an invalid code, and +1 means that ENOUGH isn't enough. table
on return points to the next available entry's address. bits is the
requested root table index bits, and on return it is the actual root
table index bits. It will differ if the request is greater than the
longest code or if it is less than the shortest code.
*/
int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)
codetype type;
unsigned short FAR *lens;
unsigned codes;
code FAR * FAR *table;
unsigned FAR *bits;
unsigned short FAR *work;
{
unsigned len; /* a code's length in bits */
unsigned sym; /* index of code symbols */
unsigned min, max; /* minimum and maximum code lengths */
unsigned root; /* number of index bits for root table */
unsigned curr; /* number of index bits for current table */
unsigned drop; /* code bits to drop for sub-table */
int left; /* number of prefix codes available */
unsigned used; /* code entries in table used */
unsigned huff; /* Huffman code */
unsigned incr; /* for incrementing code, index */
unsigned fill; /* index for replicating entries */
unsigned low; /* low bits for current root entry */
unsigned mask; /* mask for low root bits */
code here; /* table entry for duplication */
code FAR *next; /* next available space in table */
const unsigned short FAR *base; /* base value table to use */
const unsigned short FAR *extra; /* extra bits table to use */
int end; /* use base and extra for symbol > end */
unsigned short count[MAXBITS+1]; /* number of codes of each length */
unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
static const unsigned short lbase[31] = { /* Length codes 257..285 base */
3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
static const unsigned short lext[31] = { /* Length codes 257..285 extra */
16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 73, 195};
static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
8193, 12289, 16385, 24577, 0, 0};
static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
28, 28, 29, 29, 64, 64};
/*
Process a set of code lengths to create a canonical Huffman code. The
code lengths are lens[0..codes-1]. Each length corresponds to the
symbols 0..codes-1. The Huffman code is generated by first sorting the
symbols by length from short to long, and retaining the symbol order
for codes with equal lengths. Then the code starts with all zero bits
for the first code of the shortest length, and the codes are integer
increments for the same length, and zeros are appended as the length
increases. For the deflate format, these bits are stored backwards
from their more natural integer increment ordering, and so when the
decoding tables are built in the large loop below, the integer codes
are incremented backwards.
This routine assumes, but does not check, that all of the entries in
lens[] are in the range 0..MAXBITS. The caller must assure this.
1..MAXBITS is interpreted as that code length. zero means that that
symbol does not occur in this code.
The codes are sorted by computing a count of codes for each length,
creating from that a table of starting indices for each length in the
sorted table, and then entering the symbols in order in the sorted
table. The sorted table is work[], with that space being provided by
the caller.
The length counts are used for other purposes as well, i.e. finding
the minimum and maximum length codes, determining if there are any
codes at all, checking for a valid set of lengths, and looking ahead
at length counts to determine sub-table sizes when building the
decoding tables.
*/
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
for (len = 0; len <= MAXBITS; len++)
count[len] = 0;
for (sym = 0; sym < codes; sym++)
count[lens[sym]]++;
/* bound code lengths, force root to be within code lengths */
root = *bits;
for (max = MAXBITS; max >= 1; max--)
if (count[max] != 0) break;
if (root > max) root = max;
if (max == 0) { /* no symbols to code at all */
here.op = (unsigned char)64; /* invalid code marker */
here.bits = (unsigned char)1;
here.val = (unsigned short)0;
*(*table)++ = here; /* make a table to force an error */
*(*table)++ = here;
*bits = 1;
return 0; /* no symbols, but wait for decoding to report error */
}
for (min = 1; min < max; min++)
if (count[min] != 0) break;
if (root < min) root = min;
/* check for an over-subscribed or incomplete set of lengths */
left = 1;
for (len = 1; len <= MAXBITS; len++) {
left <<= 1;
left -= count[len];
if (left < 0) return -1; /* over-subscribed */
}
if (left > 0 && (type == CODES || max != 1))
return -1; /* incomplete set */
/* generate offsets into symbol table for each length for sorting */
offs[1] = 0;
for (len = 1; len < MAXBITS; len++)
offs[len + 1] = offs[len] + count[len];
/* sort symbols by length, by symbol order within each length */
for (sym = 0; sym < codes; sym++)
if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
/*
Create and fill in decoding tables. In this loop, the table being
filled is at next and has curr index bits. The code being used is huff
with length len. That code is converted to an index by dropping drop
bits off of the bottom. For codes where len is less than drop + curr,
those top drop + curr - len bits are incremented through all values to
fill the table with replicated entries.
root is the number of index bits for the root table. When len exceeds
root, sub-tables are created pointed to by the root entry with an index
of the low root bits of huff. This is saved in low to check for when a
new sub-table should be started. drop is zero when the root table is
being filled, and drop is root when sub-tables are being filled.
When a new sub-table is needed, it is necessary to look ahead in the
code lengths to determine what size sub-table is needed. The length
counts are used for this, and so count[] is decremented as codes are
entered in the tables.
used keeps track of how many table entries have been allocated from the
provided *table space. It is checked for LENS and DIST tables against
the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
the initial root table size constants. See the comments in inftrees.h
for more information.
sym increments through all symbols, and the loop terminates when
all codes of length max, i.e. all codes, have been processed. This
routine permits incomplete codes, so another loop after this one fills
in the rest of the decoding tables with invalid code markers.
*/
/* set up for code type */
switch (type) {
case CODES:
base = extra = work; /* dummy value--not used */
end = 19;
break;
case LENS:
base = lbase;
base -= 257;
extra = lext;
extra -= 257;
end = 256;
break;
default: /* DISTS */
base = dbase;
extra = dext;
end = -1;
}
/* initialize state for loop */
huff = 0; /* starting code */
sym = 0; /* starting code symbol */
len = min; /* starting code length */
next = *table; /* current table to fill in */
curr = root; /* current table index bits */
drop = 0; /* current bits to drop from code for index */
low = (unsigned)(-1); /* trigger new sub-table when len > root */
used = 1U << root; /* use root table entries */
mask = used - 1; /* mask for comparing low */
/* check available table space */
if ((type == LENS && used >= ENOUGH_LENS) ||
(type == DISTS && used >= ENOUGH_DISTS))
return 1;
/* process all codes and make table entries */
for (;;) {
/* create table entry */
here.bits = (unsigned char)(len - drop);
if ((int)(work[sym]) < end) {
here.op = (unsigned char)0;
here.val = work[sym];
}
else if ((int)(work[sym]) > end) {
here.op = (unsigned char)(extra[work[sym]]);
here.val = base[work[sym]];
}
else {
here.op = (unsigned char)(32 + 64); /* end of block */
here.val = 0;
}
/* replicate for those indices with low len bits equal to huff */
incr = 1U << (len - drop);
fill = 1U << curr;
min = fill; /* save offset to next table */
do {
fill -= incr;
next[(huff >> drop) + fill] = here;
} while (fill != 0);
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
if (incr != 0) {
huff &= incr - 1;
huff += incr;
}
else
huff = 0;
/* go to next symbol, update count, len */
sym++;
if (--(count[len]) == 0) {
if (len == max) break;
len = lens[work[sym]];
}
/* create new sub-table if needed */
if (len > root && (huff & mask) != low) {
/* if first time, transition to sub-tables */
if (drop == 0)
drop = root;
/* increment past last table */
next += min; /* here min is 1 << curr */
/* determine length of next table */
curr = len - drop;
left = (int)(1 << curr);
while (curr + drop < max) {
left -= count[curr + drop];
if (left <= 0) break;
curr++;
left <<= 1;
}
/* check for enough space */
used += 1U << curr;
if ((type == LENS && used >= ENOUGH_LENS) ||
(type == DISTS && used >= ENOUGH_DISTS))
return 1;
/* point entry in root table to sub-table */
low = huff & mask;
(*table)[low].op = (unsigned char)curr;
(*table)[low].bits = (unsigned char)root;
(*table)[low].val = (unsigned short)(next - *table);
}
}
/*
Fill in rest of table for incomplete codes. This loop is similar to the
loop above in incrementing huff for table indices. It is assumed that
len is equal to curr + drop, so there is no loop needed to increment
through high index bits. When the current sub-table is filled, the loop
drops back to the root table to fill in any remaining entries there.
*/
here.op = (unsigned char)64; /* invalid code marker */
here.bits = (unsigned char)(len - drop);
here.val = (unsigned short)0;
while (huff != 0) {
/* when done with sub-table, drop back to root table */
if (drop != 0 && (huff & mask) != low) {
drop = 0;
len = root;
next = *table;
here.bits = (unsigned char)len;
}
/* put invalid code marker in table */
next[huff >> drop] = here;
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
if (incr != 0) {
huff &= incr - 1;
huff += incr;
}
else
huff = 0;
}
/* set return parameters */
*table += used;
*bits = root;
return 0;
}

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/* inftrees.h -- header to use inftrees.c
* Copyright (C) 1995-2005, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* Structure for decoding tables. Each entry provides either the
information needed to do the operation requested by the code that
indexed that table entry, or it provides a pointer to another
table that indexes more bits of the code. op indicates whether
the entry is a pointer to another table, a literal, a length or
distance, an end-of-block, or an invalid code. For a table
pointer, the low four bits of op is the number of index bits of
that table. For a length or distance, the low four bits of op
is the number of extra bits to get after the code. bits is
the number of bits in this code or part of the code to drop off
of the bit buffer. val is the actual byte to output in the case
of a literal, the base length or distance, or the offset from
the current table to the next table. Each entry is four bytes. */
typedef struct {
unsigned char op; /* operation, extra bits, table bits */
unsigned char bits; /* bits in this part of the code */
unsigned short val; /* offset in table or code value */
} code;
/* op values as set by inflate_table():
00000000 - literal
0000tttt - table link, tttt != 0 is the number of table index bits
0001eeee - length or distance, eeee is the number of extra bits
01100000 - end of block
01000000 - invalid code
*/
/* Maximum size of the dynamic table. The maximum number of code structures is
1444, which is the sum of 852 for literal/length codes and 592 for distance
codes. These values were found by exhaustive searches using the program
examples/enough.c found in the zlib distribtution. The arguments to that
program are the number of symbols, the initial root table size, and the
maximum bit length of a code. "enough 286 9 15" for literal/length codes
returns returns 852, and "enough 30 6 15" for distance codes returns 592.
The initial root table size (9 or 6) is found in the fifth argument of the
inflate_table() calls in inflate.c and infback.c. If the root table size is
changed, then these maximum sizes would be need to be recalculated and
updated. */
#define ENOUGH_LENS 852
#define ENOUGH_DISTS 592
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
/* Type of code to build for inflate_table() */
typedef enum {
CODES,
LENS,
DISTS
} codetype;
int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
unsigned codes, code FAR * FAR *table,
unsigned FAR *bits, unsigned short FAR *work));

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/* header created automatically with -DGEN_TREES_H */
local const ct_data static_ltree[L_CODES+2] = {
{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},
{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},
{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},
{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},
{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},
{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},
{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},
{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},
{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},
{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},
{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},
{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},
{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},
{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},
{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},
{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},
{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},
{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},
{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},
{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},
{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},
{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},
{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},
{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},
{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},
{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},
{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},
{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},
{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},
{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},
{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},
{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},
{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},
{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},
{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},
{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},
{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},
{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},
{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},
{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},
{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},
{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},
{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},
{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},
{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},
{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},
{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},
{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},
{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},
{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},
{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},
{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},
{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},
{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},
{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},
{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},
{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},
{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}
};
local const ct_data static_dtree[D_CODES] = {
{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
};
const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,
18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
};
const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
};
local const int base_length[LENGTH_CODES] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
64, 80, 96, 112, 128, 160, 192, 224, 0
};
local const int base_dist[D_CODES] = {
0, 1, 2, 3, 4, 6, 8, 12, 16, 24,
32, 48, 64, 96, 128, 192, 256, 384, 512, 768,
1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
};

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/* uncompr.c -- decompress a memory buffer
* Copyright (C) 1995-2003, 2010 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#define ZLIB_INTERNAL
#include "zlib.h"
/* ===========================================================================
Decompresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total
size of the destination buffer, which must be large enough to hold the
entire uncompressed data. (The size of the uncompressed data must have
been saved previously by the compressor and transmitted to the decompressor
by some mechanism outside the scope of this compression library.)
Upon exit, destLen is the actual size of the compressed buffer.
uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_BUF_ERROR if there was not enough room in the output
buffer, or Z_DATA_ERROR if the input data was corrupted.
*/
int ZEXPORT uncompress (dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
{
z_stream stream;
int err;
stream.next_in = (Bytef*)source;
stream.avail_in = (uInt)sourceLen;
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
stream.next_out = dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
err = inflateInit(&stream);
if (err != Z_OK) return err;
err = inflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
inflateEnd(&stream);
if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
return Z_DATA_ERROR;
return err;
}
*destLen = stream.total_out;
err = inflateEnd(&stream);
return err;
}

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/* zconf.h -- configuration of the zlib compression library
* Copyright (C) 1995-2010 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#ifndef ZCONF_H
#define ZCONF_H
/*
* If you *really* need a unique prefix for all types and library functions,
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
* Even better than compiling with -DZ_PREFIX would be to use configure to set
* this permanently in zconf.h using "./configure --zprefix".
*/
#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
/* all linked symbols */
# define _dist_code z__dist_code
# define _length_code z__length_code
# define _tr_align z__tr_align
# define _tr_flush_block z__tr_flush_block
# define _tr_init z__tr_init
# define _tr_stored_block z__tr_stored_block
# define _tr_tally z__tr_tally
# define adler32 z_adler32
# define adler32_combine z_adler32_combine
# define adler32_combine64 z_adler32_combine64
# define compress z_compress
# define compress2 z_compress2
# define compressBound z_compressBound
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
# define deflate z_deflate
# define deflateBound z_deflateBound
# define deflateCopy z_deflateCopy
# define deflateEnd z_deflateEnd
# define deflateInit2_ z_deflateInit2_
# define deflateInit_ z_deflateInit_
# define deflateParams z_deflateParams
# define deflatePrime z_deflatePrime
# define deflateReset z_deflateReset
# define deflateSetDictionary z_deflateSetDictionary
# define deflateSetHeader z_deflateSetHeader
# define deflateTune z_deflateTune
# define deflate_copyright z_deflate_copyright
# define get_crc_table z_get_crc_table
# define gz_error z_gz_error
# define gz_intmax z_gz_intmax
# define gz_strwinerror z_gz_strwinerror
# define gzbuffer z_gzbuffer
# define gzclearerr z_gzclearerr
# define gzclose z_gzclose
# define gzclose_r z_gzclose_r
# define gzclose_w z_gzclose_w
# define gzdirect z_gzdirect
# define gzdopen z_gzdopen
# define gzeof z_gzeof
# define gzerror z_gzerror
# define gzflush z_gzflush
# define gzgetc z_gzgetc
# define gzgets z_gzgets
# define gzoffset z_gzoffset
# define gzoffset64 z_gzoffset64
# define gzopen z_gzopen
# define gzopen64 z_gzopen64
# define gzprintf z_gzprintf
# define gzputc z_gzputc
# define gzputs z_gzputs
# define gzread z_gzread
# define gzrewind z_gzrewind
# define gzseek z_gzseek
# define gzseek64 z_gzseek64
# define gzsetparams z_gzsetparams
# define gztell z_gztell
# define gztell64 z_gztell64
# define gzungetc z_gzungetc
# define gzwrite z_gzwrite
# define inflate z_inflate
# define inflateBack z_inflateBack
# define inflateBackEnd z_inflateBackEnd
# define inflateBackInit_ z_inflateBackInit_
# define inflateCopy z_inflateCopy
# define inflateEnd z_inflateEnd
# define inflateGetHeader z_inflateGetHeader
# define inflateInit2_ z_inflateInit2_
# define inflateInit_ z_inflateInit_
# define inflateMark z_inflateMark
# define inflatePrime z_inflatePrime
# define inflateReset z_inflateReset
# define inflateReset2 z_inflateReset2
# define inflateSetDictionary z_inflateSetDictionary
# define inflateSync z_inflateSync
# define inflateSyncPoint z_inflateSyncPoint
# define inflateUndermine z_inflateUndermine
# define inflate_copyright z_inflate_copyright
# define inflate_fast z_inflate_fast
# define inflate_table z_inflate_table
# define uncompress z_uncompress
# define zError z_zError
# define zcalloc z_zcalloc
# define zcfree z_zcfree
# define zlibCompileFlags z_zlibCompileFlags
# define zlibVersion z_zlibVersion
/* all zlib typedefs in zlib.h and zconf.h */
# define Byte z_Byte
# define Bytef z_Bytef
# define alloc_func z_alloc_func
# define charf z_charf
# define free_func z_free_func
# define gzFile z_gzFile
# define gz_header z_gz_header
# define gz_headerp z_gz_headerp
# define in_func z_in_func
# define intf z_intf
# define out_func z_out_func
# define uInt z_uInt
# define uIntf z_uIntf
# define uLong z_uLong
# define uLongf z_uLongf
# define voidp z_voidp
# define voidpc z_voidpc
# define voidpf z_voidpf
/* all zlib structs in zlib.h and zconf.h */
# define gz_header_s z_gz_header_s
# define internal_state z_internal_state
#endif
#if defined(__MSDOS__) && !defined(MSDOS)
# define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
# define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
# define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
# ifndef WIN32
# define WIN32
# endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
# ifndef SYS16BIT
# define SYS16BIT
# endif
# endif
#endif
/*
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
* than 64k bytes at a time (needed on systems with 16-bit int).
*/
#ifdef SYS16BIT
# define MAXSEG_64K
#endif
#ifdef MSDOS
# define UNALIGNED_OK
#endif
#ifdef __STDC_VERSION__
# ifndef STDC
# define STDC
# endif
# if __STDC_VERSION__ >= 199901L
# ifndef STDC99
# define STDC99
# endif
# endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
# define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
# define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
# define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
# define STDC
#endif
#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
# define STDC
#endif
#ifndef STDC
# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
# define const /* note: need a more gentle solution here */
# endif
#endif
/* Some Mac compilers merge all .h files incorrectly: */
#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
# define NO_DUMMY_DECL
#endif
/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
# ifdef MAXSEG_64K
# define MAX_MEM_LEVEL 8
# else
# define MAX_MEM_LEVEL 9
# endif
#endif
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
* created by gzip. (Files created by minigzip can still be extracted by
* gzip.)
*/
#ifndef MAX_WBITS
# define MAX_WBITS 15 /* 32K LZ77 window */
#endif
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
plus a few kilobytes for small objects. For example, if you want to reduce
the default memory requirements from 256K to 128K, compile with
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
Of course this will generally degrade compression (there's no free lunch).
The memory requirements for inflate are (in bytes) 1 << windowBits
that is, 32K for windowBits=15 (default value) plus a few kilobytes
for small objects.
*/
/* Type declarations */
#ifndef OF /* function prototypes */
# ifdef STDC
# define OF(args) args
# else
# define OF(args) ()
# endif
#endif
/* The following definitions for FAR are needed only for MSDOS mixed
* model programming (small or medium model with some far allocations).
* This was tested only with MSC; for other MSDOS compilers you may have
* to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
* just define FAR to be empty.
*/
#ifdef SYS16BIT
# if defined(M_I86SM) || defined(M_I86MM)
/* MSC small or medium model */
# define SMALL_MEDIUM
# ifdef _MSC_VER
# define FAR _far
# else
# define FAR far
# endif
# endif
# if (defined(__SMALL__) || defined(__MEDIUM__))
/* Turbo C small or medium model */
# define SMALL_MEDIUM
# ifdef __BORLANDC__
# define FAR _far
# else
# define FAR far
# endif
# endif
#endif
#if defined(WINDOWS) || defined(WIN32)
/* If building or using zlib as a DLL, define ZLIB_DLL.
* This is not mandatory, but it offers a little performance increase.
*/
# ifdef ZLIB_DLL
# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
# ifdef ZLIB_INTERNAL
# define ZEXTERN extern __declspec(dllexport)
# else
# define ZEXTERN extern __declspec(dllimport)
# endif
# endif
# endif /* ZLIB_DLL */
/* If building or using zlib with the WINAPI/WINAPIV calling convention,
* define ZLIB_WINAPI.
* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
*/
# ifdef ZLIB_WINAPI
# ifdef FAR
# undef FAR
# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# define ZEXPORT WINAPI
# ifdef WIN32
# define ZEXPORTVA WINAPIV
# else
# define ZEXPORTVA FAR CDECL
# endif
# endif
#endif
#if defined (__BEOS__)
# ifdef ZLIB_DLL
# ifdef ZLIB_INTERNAL
# define ZEXPORT __declspec(dllexport)
# define ZEXPORTVA __declspec(dllexport)
# else
# define ZEXPORT __declspec(dllimport)
# define ZEXPORTVA __declspec(dllimport)
# endif
# endif
#endif
#ifndef ZEXTERN
# define ZEXTERN extern
#endif
#ifndef ZEXPORT
# define ZEXPORT
#endif
#ifndef ZEXPORTVA
# define ZEXPORTVA
#endif
#ifndef FAR
# define FAR
#endif
#if !defined(__MACTYPES__)
typedef unsigned char Byte; /* 8 bits */
#endif
typedef unsigned int uInt; /* 16 bits or more */
typedef unsigned long uLong; /* 32 bits or more */
#ifdef SMALL_MEDIUM
/* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
# define Bytef Byte FAR
#else
typedef Byte FAR Bytef;
#endif
typedef char FAR charf;
typedef int FAR intf;
typedef uInt FAR uIntf;
typedef uLong FAR uLongf;
#ifdef STDC
typedef void const *voidpc;
typedef void FAR *voidpf;
typedef void *voidp;
#else
typedef Byte const *voidpc;
typedef Byte FAR *voidpf;
typedef Byte *voidp;
#endif
#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_UNISTD_H
#endif
#ifdef STDC
# include <sys/types.h> /* for off_t */
#endif
/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
* though the former does not conform to the LFS document), but considering
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
#if -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_* and off_t */
# ifdef VMS
# include <unixio.h> /* for off_t */
# endif
# ifndef z_off_t
# define z_off_t off_t
# endif
#endif
#ifndef SEEK_SET
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
#ifndef z_off_t
# define z_off_t long
#endif
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
# define z_off64_t off64_t
#else
# define z_off64_t z_off_t
#endif
#if defined(__OS400__)
# define NO_vsnprintf
#endif
#if defined(__MVS__)
# define NO_vsnprintf
#endif
/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
#pragma map(deflateInit_,"DEIN")
#pragma map(deflateInit2_,"DEIN2")
#pragma map(deflateEnd,"DEEND")
#pragma map(deflateBound,"DEBND")
#pragma map(inflateInit_,"ININ")
#pragma map(inflateInit2_,"ININ2")
#pragma map(inflateEnd,"INEND")
#pragma map(inflateSync,"INSY")
#pragma map(inflateSetDictionary,"INSEDI")
#pragma map(compressBound,"CMBND")
#pragma map(inflate_table,"INTABL")
#pragma map(inflate_fast,"INFA")
#pragma map(inflate_copyright,"INCOPY")
#endif
#endif /* ZCONF_H */

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/* zutil.c -- target dependent utility functions for the compression library
* Copyright (C) 1995-2005, 2010 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include "zutil.h"
#ifndef NO_DUMMY_DECL
struct internal_state {int dummy;}; /* for buggy compilers */
#endif
const char * const z_errmsg[10] = {
"need dictionary", /* Z_NEED_DICT 2 */
"stream end", /* Z_STREAM_END 1 */
"", /* Z_OK 0 */
"file error", /* Z_ERRNO (-1) */
"stream error", /* Z_STREAM_ERROR (-2) */
"data error", /* Z_DATA_ERROR (-3) */
"insufficient memory", /* Z_MEM_ERROR (-4) */
"buffer error", /* Z_BUF_ERROR (-5) */
"incompatible version",/* Z_VERSION_ERROR (-6) */
""};
const char * ZEXPORT zlibVersion()
{
return ZLIB_VERSION;
}
uLong ZEXPORT zlibCompileFlags()
{
uLong flags;
flags = 0;
switch ((int)(sizeof(uInt))) {
case 2: break;
case 4: flags += 1; break;
case 8: flags += 2; break;
default: flags += 3;
}
switch ((int)(sizeof(uLong))) {
case 2: break;
case 4: flags += 1 << 2; break;
case 8: flags += 2 << 2; break;
default: flags += 3 << 2;
}
switch ((int)(sizeof(voidpf))) {
case 2: break;
case 4: flags += 1 << 4; break;
case 8: flags += 2 << 4; break;
default: flags += 3 << 4;
}
switch ((int)(sizeof(z_off_t))) {
case 2: break;
case 4: flags += 1 << 6; break;
case 8: flags += 2 << 6; break;
default: flags += 3 << 6;
}
#ifdef DEBUG
flags += 1 << 8;
#endif
#if defined(ASMV) || defined(ASMINF)
flags += 1 << 9;
#endif
#ifdef ZLIB_WINAPI
flags += 1 << 10;
#endif
#ifdef BUILDFIXED
flags += 1 << 12;
#endif
#ifdef DYNAMIC_CRC_TABLE
flags += 1 << 13;
#endif
#ifdef NO_GZCOMPRESS
flags += 1L << 16;
#endif
#ifdef NO_GZIP
flags += 1L << 17;
#endif
#ifdef PKZIP_BUG_WORKAROUND
flags += 1L << 20;
#endif
#ifdef FASTEST
flags += 1L << 21;
#endif
#ifdef STDC
# ifdef NO_vsnprintf
flags += 1L << 25;
# ifdef HAS_vsprintf_void
flags += 1L << 26;
# endif
# else
# ifdef HAS_vsnprintf_void
flags += 1L << 26;
# endif
# endif
#else
flags += 1L << 24;
# ifdef NO_snprintf
flags += 1L << 25;
# ifdef HAS_sprintf_void
flags += 1L << 26;
# endif
# else
# ifdef HAS_snprintf_void
flags += 1L << 26;
# endif
# endif
#endif
return flags;
}
#ifdef DEBUG
# ifndef verbose
# define verbose 0
# endif
int ZLIB_INTERNAL z_verbose = verbose;
void ZLIB_INTERNAL z_error (m)
char *m;
{
fprintf(stderr, "%s\n", m);
exit(1);
}
#endif
/* exported to allow conversion of error code to string for compress() and
* uncompress()
*/
const char * ZEXPORT zError(err)
int err;
{
return ERR_MSG(err);
}
#if defined(_WIN32_WCE)
/* The Microsoft C Run-Time Library for Windows CE doesn't have
* errno. We define it as a global variable to simplify porting.
* Its value is always 0 and should not be used.
*/
int errno = 0;
#endif
#ifndef HAVE_MEMCPY
void ZLIB_INTERNAL zmemcpy(dest, source, len)
Bytef* dest;
const Bytef* source;
uInt len;
{
if (len == 0) return;
do {
*dest++ = *source++; /* ??? to be unrolled */
} while (--len != 0);
}
int ZLIB_INTERNAL zmemcmp(s1, s2, len)
const Bytef* s1;
const Bytef* s2;
uInt len;
{
uInt j;
for (j = 0; j < len; j++) {
if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
}
return 0;
}
void ZLIB_INTERNAL zmemzero(dest, len)
Bytef* dest;
uInt len;
{
if (len == 0) return;
do {
*dest++ = 0; /* ??? to be unrolled */
} while (--len != 0);
}
#endif
#ifdef SYS16BIT
#ifdef __TURBOC__
/* Turbo C in 16-bit mode */
# define MY_ZCALLOC
/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
* and farmalloc(64K) returns a pointer with an offset of 8, so we
* must fix the pointer. Warning: the pointer must be put back to its
* original form in order to free it, use zcfree().
*/
#define MAX_PTR 10
/* 10*64K = 640K */
local int next_ptr = 0;
typedef struct ptr_table_s {
voidpf org_ptr;
voidpf new_ptr;
} ptr_table;
local ptr_table table[MAX_PTR];
/* This table is used to remember the original form of pointers
* to large buffers (64K). Such pointers are normalized with a zero offset.
* Since MSDOS is not a preemptive multitasking OS, this table is not
* protected from concurrent access. This hack doesn't work anyway on
* a protected system like OS/2. Use Microsoft C instead.
*/
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
{
voidpf buf = opaque; /* just to make some compilers happy */
ulg bsize = (ulg)items*size;
/* If we allocate less than 65520 bytes, we assume that farmalloc
* will return a usable pointer which doesn't have to be normalized.
*/
if (bsize < 65520L) {
buf = farmalloc(bsize);
if (*(ush*)&buf != 0) return buf;
} else {
buf = farmalloc(bsize + 16L);
}
if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
table[next_ptr].org_ptr = buf;
/* Normalize the pointer to seg:0 */
*((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
*(ush*)&buf = 0;
table[next_ptr++].new_ptr = buf;
return buf;
}
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
{
int n;
if (*(ush*)&ptr != 0) { /* object < 64K */
farfree(ptr);
return;
}
/* Find the original pointer */
for (n = 0; n < next_ptr; n++) {
if (ptr != table[n].new_ptr) continue;
farfree(table[n].org_ptr);
while (++n < next_ptr) {
table[n-1] = table[n];
}
next_ptr--;
return;
}
ptr = opaque; /* just to make some compilers happy */
Assert(0, "zcfree: ptr not found");
}
#endif /* __TURBOC__ */
#ifdef M_I86
/* Microsoft C in 16-bit mode */
# define MY_ZCALLOC
#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
# define _halloc halloc
# define _hfree hfree
#endif
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
{
if (opaque) opaque = 0; /* to make compiler happy */
return _halloc((long)items, size);
}
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
{
if (opaque) opaque = 0; /* to make compiler happy */
_hfree(ptr);
}
#endif /* M_I86 */
#endif /* SYS16BIT */
#ifndef MY_ZCALLOC /* Any system without a special alloc function */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern voidp calloc OF((uInt items, uInt size));
extern void free OF((voidpf ptr));
#endif
voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
voidpf opaque;
unsigned items;
unsigned size;
{
if (opaque) items += size - size; /* make compiler happy */
return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
(voidpf)calloc(items, size);
}
void ZLIB_INTERNAL zcfree (opaque, ptr)
voidpf opaque;
voidpf ptr;
{
free(ptr);
if (opaque) return; /* make compiler happy */
}
#endif /* MY_ZCALLOC */

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/* zutil.h -- internal interface and configuration of the compression library
* Copyright (C) 1995-2010 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* @(#) $Id$ */
#ifndef ZUTIL_H
#define ZUTIL_H
#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL
#endif
#include "zlib.h"
#ifdef STDC
# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
# include <stddef.h>
# endif
# include <string.h>
# include <stdlib.h>
#endif
#ifndef local
# define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */
typedef unsigned char uch;
typedef uch FAR uchf;
typedef unsigned short ush;
typedef ush FAR ushf;
typedef unsigned long ulg;
extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
/* (size given to avoid silly warnings with Visual C++) */
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
#define ERR_RETURN(strm,err) \
return (strm->msg = (char*)ERR_MSG(err), (err))
/* To be used only when the state is known to be valid */
/* common constants */
#ifndef DEF_WBITS
# define DEF_WBITS MAX_WBITS
#endif
/* default windowBits for decompression. MAX_WBITS is for compression only */
#if MAX_MEM_LEVEL >= 8
# define DEF_MEM_LEVEL 8
#else
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
#endif
/* default memLevel */
#define STORED_BLOCK 0
#define STATIC_TREES 1
#define DYN_TREES 2
/* The three kinds of block type */
#define MIN_MATCH 3
#define MAX_MATCH 258
/* The minimum and maximum match lengths */
#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
/* target dependencies */
#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
# define OS_CODE 0x00
# if defined(__TURBOC__) || defined(__BORLANDC__)
# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
/* Allow compilation with ANSI keywords only enabled */
void _Cdecl farfree( void *block );
void *_Cdecl farmalloc( unsigned long nbytes );
# else
# include <alloc.h>
# endif
# else /* MSC or DJGPP */
# include <malloc.h>
# endif
#endif
#ifdef AMIGA
# define OS_CODE 0x01
#endif
#if defined(VAXC) || defined(VMS)
# define OS_CODE 0x02
# define F_OPEN(name, mode) \
fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
#endif
#if defined(ATARI) || defined(atarist)
# define OS_CODE 0x05
#endif
#ifdef OS2
# define OS_CODE 0x06
# ifdef M_I86
# include <malloc.h>
# endif
#endif
#if defined(MACOS) || defined(TARGET_OS_MAC)
# define OS_CODE 0x07
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
# include <unix.h> /* for fdopen */
# else
# ifndef fdopen
# define fdopen(fd,mode) NULL /* No fdopen() */
# endif
# endif
#endif
#ifdef TOPS20
# define OS_CODE 0x0a
#endif
#ifdef WIN32
# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
# define OS_CODE 0x0b
# endif
#endif
#ifdef __50SERIES /* Prime/PRIMOS */
# define OS_CODE 0x0f
#endif
#if defined(_BEOS_) || defined(RISCOS)
# define fdopen(fd,mode) NULL /* No fdopen() */
#endif
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
# if defined(_WIN32_WCE)
# define fdopen(fd,mode) NULL /* No fdopen() */
# ifndef _PTRDIFF_T_DEFINED
typedef int ptrdiff_t;
# define _PTRDIFF_T_DEFINED
# endif
# else
# define fdopen(fd,type) _fdopen(fd,type)
# endif
#endif
#if defined(__BORLANDC__)
#pragma warn -8004
#pragma warn -8008
#pragma warn -8066
#endif
/* provide prototypes for these when building zlib without LFS */
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
#endif
/* common defaults */
#ifndef OS_CODE
# define OS_CODE 0x03 /* assume Unix */
#endif
#ifndef F_OPEN
# define F_OPEN(name, mode) fopen((name), (mode))
#endif
/* functions */
#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
# ifndef HAVE_VSNPRINTF
# define HAVE_VSNPRINTF
# endif
#endif
#if defined(__CYGWIN__)
# ifndef HAVE_VSNPRINTF
# define HAVE_VSNPRINTF
# endif
#endif
#ifndef HAVE_VSNPRINTF
# ifdef MSDOS
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
but for now we just assume it doesn't. */
# define NO_vsnprintf
# endif
# ifdef __TURBOC__
# define NO_vsnprintf
# endif
# ifdef WIN32
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
# if !defined(vsnprintf) && !defined(NO_vsnprintf)
# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
# define vsnprintf _vsnprintf
# endif
# endif
# endif
# ifdef __SASC
# define NO_vsnprintf
# endif
#endif
#ifdef VMS
# define NO_vsnprintf
#endif
#if defined(pyr)
# define NO_MEMCPY
#endif
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
/* Use our own functions for small and medium model with MSC <= 5.0.
* You may have to use the same strategy for Borland C (untested).
* The __SC__ check is for Symantec.
*/
# define NO_MEMCPY
#endif
#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
# define HAVE_MEMCPY
#endif
#ifdef HAVE_MEMCPY
# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
# define zmemcpy _fmemcpy
# define zmemcmp _fmemcmp
# define zmemzero(dest, len) _fmemset(dest, 0, len)
# else
# define zmemcpy memcpy
# define zmemcmp memcmp
# define zmemzero(dest, len) memset(dest, 0, len)
# endif
#else
void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
#endif
/* Diagnostic functions */
#ifdef DEBUG
# include <stdio.h>
extern int ZLIB_INTERNAL z_verbose;
extern void ZLIB_INTERNAL z_error OF((char *m));
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
# define Trace(x) {if (z_verbose>=0) fprintf x ;}
# define Tracev(x) {if (z_verbose>0) fprintf x ;}
# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
#else
# define Assert(cond,msg)
# define Trace(x)
# define Tracev(x)
# define Tracevv(x)
# define Tracec(c,x)
# define Tracecv(c,x)
#endif
voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
unsigned size));
void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
#define ZALLOC(strm, items, size) \
(*((strm)->zalloc))((strm)->opaque, (items), (size))
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
#endif /* ZUTIL_H */