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implement flushEvents() flushDigits() setAutoHangup() and setHangupHook(). reworked dtmfhandler and some aspects relating to threadstate. folded in memory pool thing from mishehu. added more asserts to switch_core_file (coordinated w/ anthony on this) 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@5442 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Traun Leyden 2007-06-22 19:14:53 +00:00
parent 34d6c49870
commit 6f78befac9
9 changed files with 1220 additions and 407 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
src/include/switch_cpp.h
View File

@ -11,6 +11,50 @@ extern "C" {
#include <switch.h>
//
// C++ Interface: switch_to_cpp_mempool
//
// Description: This class allows for overloading the new operator to allocate from a switch_memory_pool_t
//
// Author: Yossi Neiman <freeswitch@cartissolutions.com>, (C) 2007
//
// Copyright: See COPYING file that comes with this distribution
//
#ifndef SWITCHTOMEMPOOL
#define SWITCHTOMEMPOOL
class SwitchToMempool {
public:
SwitchToMempool() { }
SwitchToMempool(switch_memory_pool_t *mem) { memorypool = mem; }
void *operator new(switch_size_t num_bytes, switch_memory_pool_t *mem)
{
void *ptr = switch_core_alloc(mem, (switch_size_t) num_bytes);
return ptr;
}
protected:
switch_memory_pool_t *memorypool;
};
#endif
/*
Overview: once you create an object that inherits this class, since
the memory pool is then a class data member, you can continue to
allocate objects from the memory pool.
objects from within the class
Notes on usage:
1. The derived class will need to also overload the ctor so that it accepts a memory pool object as a parameter.
2. Instantiation of a class would then look something like this: Foo *bar = new(memory_pool) Foo(memory_pool);
Note that the first parameter to the new operator is implicitly handled by c++... not sure I like that but it's how it is...
*/
void console_log(char *level_str, char *msg);
void console_clean_log(char *msg);
@ -40,6 +84,12 @@ typedef struct input_callback_state {
char *funcargs; // extra string that will be passed to callback function
} input_callback_state_t;
typedef enum {
S_HUP = (1 << 0),
S_FREE = (1 << 1),
S_RDLOCK = (1 << 2)
} session_flag_t;
class CoreSession {
protected:
@ -52,6 +102,9 @@ class CoreSession {
char *tts_name;
char *voice_name;
void store_file_handle(switch_file_handle_t *fh);
void *on_hangup; // language specific callback function, cast as void *
public:
CoreSession();
CoreSession(char *uuid);
@ -59,12 +112,14 @@ class CoreSession {
virtual ~CoreSession();
switch_core_session_t *session;
switch_channel_t *channel;
unsigned int flags;
input_callback_state cb_state; // callback state, always pointed to by the buf
// field in this->args
switch_channel_state_t hook_state; // store hookstate for on_hangup callback
int answer();
int preAnswer();
void hangup(char *cause);
virtual void hangup(char *cause);
void setVariable(char *var, char *val);
char *getVariable(char *var);
@ -118,19 +173,16 @@ class CoreSession {
* is pressed by user during playFile(), streamfile(), and
* certain other methods are executing.
*
* Note that language specific sessions might need to create
* their own version of this with a slightly different signature
* (as done in freeswitch_python.h)
*/
void setDTMFCallback(switch_input_callback_function_t cb,
void *buf,
uint32_t buflen);
void setDTMFCallback(void *cbfunc, char *funcargs);
int speak(char *text);
void set_tts_parms(char *tts_name, char *voice_name);
int getDigits(char *dtmf_buf,
int len,
int buflen,
int maxdigits,
char *terminators,
char *terminator,
int timeout);
@ -165,11 +217,26 @@ class CoreSession {
*/
int streamfile(char *file, int starting_sample_count);
/** \brief flush any pending events
*/
int flushEvents();
/** \brief flush any pending digits
*/
int flushDigits();
int setAutoHangup(bool val);
/** \brief Set the hangup callback function
* \param hangup_func - language specific function ptr cast into void *
*/
void setHangupHook(void *hangup_func);
bool ready();
void execute(char *app, char *data);
virtual void begin_allow_threads();
virtual void end_allow_threads();
virtual bool begin_allow_threads() = 0;
virtual bool end_allow_threads() = 0;
/** \brief Get the uuid of this session
* \return the uuid of this session
@ -181,6 +248,12 @@ class CoreSession {
*/
const switch_input_args_t& get_cb_args() const { return args; };
/** \brief Callback to the language specific hangup callback
*/
virtual void check_hangup_hook() = 0;
virtual switch_status_t run_dtmf_callback(void *input,
switch_input_type_t itype) = 0;
};
@ -200,6 +273,19 @@ void api_reply_delete(char *reply);
void bridge(CoreSession &session_a, CoreSession &session_b);
/** \brief the actual hangup hook called back by freeswitch core
* which in turn gets the session and calls the appropriate
* instance method to complete the callback.
*/
switch_status_t hanguphook(switch_core_session_t *session);
switch_status_t dtmf_callback(switch_core_session_t *session,
void *input,
switch_input_type_t itype,
void *buf,
unsigned int buflen);
#ifdef __cplusplus
}
#endif

29
src/mod/languages/mod_python/freeswitch.py
View File

@ -80,16 +80,16 @@ class input_callback_state_t(_object):
input_callback_state_t_swigregister = _freeswitch.input_callback_state_t_swigregister
input_callback_state_t_swigregister(input_callback_state_t)
S_HUP = _freeswitch.S_HUP
S_FREE = _freeswitch.S_FREE
S_RDLOCK = _freeswitch.S_RDLOCK
class CoreSession(_object):
__swig_setmethods__ = {}
__setattr__ = lambda self, name, value: _swig_setattr(self, CoreSession, name, value)
__swig_getmethods__ = {}
__getattr__ = lambda self, name: _swig_getattr(self, CoreSession, name)
def __init__(self): raise AttributeError, "No constructor defined"
__repr__ = _swig_repr
def __init__(self, *args):
this = _freeswitch.new_CoreSession(*args)
try: self.this.append(this)
except: self.this = this
__swig_destroy__ = _freeswitch.delete_CoreSession
__del__ = lambda self : None;
__swig_setmethods__["session"] = _freeswitch.CoreSession_session_set
@ -98,9 +98,15 @@ class CoreSession(_object):
__swig_setmethods__["channel"] = _freeswitch.CoreSession_channel_set
__swig_getmethods__["channel"] = _freeswitch.CoreSession_channel_get
if _newclass:channel = _swig_property(_freeswitch.CoreSession_channel_get, _freeswitch.CoreSession_channel_set)
__swig_setmethods__["flags"] = _freeswitch.CoreSession_flags_set
__swig_getmethods__["flags"] = _freeswitch.CoreSession_flags_get
if _newclass:flags = _swig_property(_freeswitch.CoreSession_flags_get, _freeswitch.CoreSession_flags_set)
__swig_setmethods__["cb_state"] = _freeswitch.CoreSession_cb_state_set
__swig_getmethods__["cb_state"] = _freeswitch.CoreSession_cb_state_get
if _newclass:cb_state = _swig_property(_freeswitch.CoreSession_cb_state_get, _freeswitch.CoreSession_cb_state_set)
__swig_setmethods__["hook_state"] = _freeswitch.CoreSession_hook_state_set
__swig_getmethods__["hook_state"] = _freeswitch.CoreSession_hook_state_get
if _newclass:hook_state = _swig_property(_freeswitch.CoreSession_hook_state_get, _freeswitch.CoreSession_hook_state_set)
def answer(*args): return _freeswitch.CoreSession_answer(*args)
def preAnswer(*args): return _freeswitch.CoreSession_preAnswer(*args)
def hangup(*args): return _freeswitch.CoreSession_hangup(*args)
@ -117,17 +123,26 @@ class CoreSession(_object):
def transfer(*args): return _freeswitch.CoreSession_transfer(*args)
def playAndGetDigits(*args): return _freeswitch.CoreSession_playAndGetDigits(*args)
def streamfile(*args): return _freeswitch.CoreSession_streamfile(*args)
def flushEvents(*args): return _freeswitch.CoreSession_flushEvents(*args)
def flushDigits(*args): return _freeswitch.CoreSession_flushDigits(*args)
def setAutoHangup(*args): return _freeswitch.CoreSession_setAutoHangup(*args)
def setHangupHook(*args): return _freeswitch.CoreSession_setHangupHook(*args)
def ready(*args): return _freeswitch.CoreSession_ready(*args)
def execute(*args): return _freeswitch.CoreSession_execute(*args)
def begin_allow_threads(*args): return _freeswitch.CoreSession_begin_allow_threads(*args)
def end_allow_threads(*args): return _freeswitch.CoreSession_end_allow_threads(*args)
def get_uuid(*args): return _freeswitch.CoreSession_get_uuid(*args)
def get_cb_args(*args): return _freeswitch.CoreSession_get_cb_args(*args)
def check_hangup_hook(*args): return _freeswitch.CoreSession_check_hangup_hook(*args)
def run_dtmf_callback(*args): return _freeswitch.CoreSession_run_dtmf_callback(*args)
CoreSession_swigregister = _freeswitch.CoreSession_swigregister
CoreSession_swigregister(CoreSession)
bridge = _freeswitch.bridge
PythonDTMFCallback = _freeswitch.PythonDTMFCallback
hanguphook = _freeswitch.hanguphook
dtmf_callback = _freeswitch.dtmf_callback
S_SWAPPED_IN = _freeswitch.S_SWAPPED_IN
S_SWAPPED_OUT = _freeswitch.S_SWAPPED_OUT
class PySession(CoreSession):
__swig_setmethods__ = {}
for _s in [CoreSession]: __swig_setmethods__.update(getattr(_s,'__swig_setmethods__',{}))
@ -143,8 +158,12 @@ class PySession(CoreSession):
__swig_destroy__ = _freeswitch.delete_PySession
__del__ = lambda self : None;
def setDTMFCallback(*args): return _freeswitch.PySession_setDTMFCallback(*args)
def setHangupHook(*args): return _freeswitch.PySession_setHangupHook(*args)
def check_hangup_hook(*args): return _freeswitch.PySession_check_hangup_hook(*args)
def hangup(*args): return _freeswitch.PySession_hangup(*args)
def begin_allow_threads(*args): return _freeswitch.PySession_begin_allow_threads(*args)
def end_allow_threads(*args): return _freeswitch.PySession_end_allow_threads(*args)
def run_dtmf_callback(*args): return _freeswitch.PySession_run_dtmf_callback(*args)
PySession_swigregister = _freeswitch.PySession_swigregister
PySession_swigregister(PySession)

285
src/mod/languages/mod_python/freeswitch_python.cpp
View File

@ -1,7 +1,7 @@
#include "freeswitch_python.h"
#define sanity_check(x) do { if (!session) { switch_log_printf(SWITCH_CHANNEL_LOG,SWITCH_LOG_ERROR, "session is not initalized\n"); return x;}} while(0)
#define init_vars() do { caller_profile.source = "mod_python"; } while(0)
#define init_vars() do { caller_profile.source = "mod_python"; swapstate = S_SWAPPED_IN; } while(0)
PySession::PySession() : CoreSession()
{
@ -24,80 +24,107 @@ void PySession::setDTMFCallback(PyObject *pyfunc, char *funcargs)
sanity_check();
if (!PyCallable_Check(pyfunc)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "DTMF function is not a python function.");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "DTMF function is not a python function.\n");
return;
}
else {
cb_state.funcargs = funcargs;
cb_state.function = (void *) pyfunc;
Py_XINCREF(pyfunc);
CoreSession::setDTMFCallback((void *) pyfunc, funcargs);
args.buf = &cb_state;
args.buflen = sizeof(cb_state); // not sure what this is used for, copy mod_spidermonkey
// we cannot set the actual callback to a python function, because
// the callback is a function pointer with a specific signature.
// so, set it to the following c function which will act as a proxy,
// finding the python callback in the args callback args structure
args.input_callback = PythonDTMFCallback; // defined in mod_python.i
ap = &args;
}
void PySession::setHangupHook(PyObject *pyfunc) {
if (!PyCallable_Check(pyfunc)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Hangup hook is not a python function.\n");
return;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "dtmf callback was set, pyfunc: %p. cb_state: %p\n", pyfunc, &cb_state);
// without this Py_XINCREF, there will be segfaults. basically the python
// interpreter will not know that it should not GC this object.
// callback example: http://docs.python.org/ext/callingPython.html
Py_XINCREF(pyfunc);
CoreSession::setHangupHook((void *) pyfunc);
}
void PySession::begin_allow_threads(void) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::begin_allow_threads() called\n");
// swap out threadstate and store in instance variable
threadState = (void *) PyEval_SaveThread();
cb_state.threadState = threadState;
args.buf = &cb_state;
ap = &args;
}
void PySession::end_allow_threads(void) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::end_allow_threads() called\n");
// swap in threadstate from instance variable saved earlier
PyEval_RestoreThread(((PyThreadState *)threadState));
}
PySession::~PySession() {
// Should we do any cleanup here?
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::~PySession desctructor\n");
}
/* ----- functions not bound to PySession instance ------ */
switch_status_t PythonDTMFCallback(switch_core_session_t *session,
void *input,
switch_input_type_t itype,
void *buf,
unsigned int buflen)
{
PyObject *func, *arglist;
void PySession::check_hangup_hook() {
PyObject *func;
PyObject *result;
char *resultStr;
char *funcargs;
input_callback_state_t *cb_state;
switch_file_handle_t *fh = NULL;
PyThreadState *threadState = NULL;
bool did_swap_in = false;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "check_hangup_hook called\n");
if (!session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "No valid session\n");
return;
}
// The did_swap_in boolean was added to fix the following problem:
// Design flaw - we swap in threadstate based on the assumption that thread state
// is currently _swapped out_ when this hangup hook is called. However, nothing known to
// guarantee that, and if thread state is already swapped in when this is invoked,
// bad things will happen.
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "check hangup hook end_allow_threads\n");
did_swap_in = end_allow_threads();
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PythonDTMFCallback\n");
if (on_hangup == NULL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "on_hangup is null\n");
return;
}
if (!buf) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "buf pointer is null");
func = (PyObject *) on_hangup;
// TODO: to match js implementation, should pass the _python_ PySession
// object instance wrapping this C++ PySession instance. but how do we do that?
// for now, pass the uuid since its better than nothing
PyObject* func_arg = Py_BuildValue("(s)", uuid);
result = PyEval_CallObject(func, func_arg);
Py_XDECREF(func_arg);
if (result) {
resultStr = (char *) PyString_AsString(result);
// currently just ignore the result
}
else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to call python hangup callback\n");
PyErr_Print();
PyErr_Clear();
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "check hangup hook begin_allow_threads\n");
if (did_swap_in) {
begin_allow_threads();
}
Py_XDECREF(result);
}
switch_status_t PySession::run_dtmf_callback(void *input,
switch_input_type_t itype) {
PyObject *func, *arglist;
PyObject *pyresult;
char *resultStr;
char *funcargs;
switch_file_handle_t *fh = NULL;
bool did_swap_in = false;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "run_dtmf_callback\n");
if (!cb_state.function) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "cb_state->function is null\n");
return SWITCH_STATUS_FALSE;
}
cb_state = (input_callback_state *) buf;
}
func = (PyObject *) cb_state->function;
func = (PyObject *) cb_state.function;
if (!func) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "cb_state->function is null\n");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "cb_state->function is null\n");
return SWITCH_STATUS_FALSE;
}
else {
@ -108,7 +135,7 @@ switch_status_t PythonDTMFCallback(switch_core_session_t *session,
return SWITCH_STATUS_FALSE;
}
funcargs = (char *) cb_state->funcargs;
funcargs = (char *) cb_state.funcargs;
arglist = Py_BuildValue("(sis)", input, itype, funcargs);
if (!arglist) {
@ -116,36 +143,127 @@ switch_status_t PythonDTMFCallback(switch_core_session_t *session,
return SWITCH_STATUS_FALSE;
}
threadState = (PyThreadState *) cb_state->threadState;
if (!threadState) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "error, invalid threadstate\n");
return SWITCH_STATUS_FALSE;
}
else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "restoring threadstate: %p\n", threadState);
}
PyEval_RestoreThread(threadState); // nasty stuff happens when py interp has no thread state
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "restored threadstate, calling python function: %p\n", func);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "run_dtmf_callback end_allow_threads\n");
did_swap_in = end_allow_threads();
result = PyEval_CallObject(func, arglist);
pyresult = PyEval_CallObject(func, arglist);
threadState = PyEval_SaveThread();
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "called python function\n");
Py_DECREF(arglist); // Trash arglist
if (result && result != Py_None) {
resultStr = (char *) PyString_AsString(result);
Py_XDECREF(result);
return process_callback_result(resultStr, cb_state, session);
Py_XDECREF(arglist); // Trash arglist
if (pyresult && pyresult != Py_None) {
resultStr = (char *) PyString_AsString(pyresult);
switch_status_t cbresult = process_callback_result(resultStr, &cb_state, session);
return cbresult;
}
else {
return SWITCH_STATUS_FALSE;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error calling python callback\n");
PyErr_Print();
PyErr_Clear();
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "run_dtmf_callback begin_allow_threads\n");
if (did_swap_in) {
begin_allow_threads();
}
Py_XDECREF(pyresult);
return SWITCH_STATUS_SUCCESS;
}
bool PySession::begin_allow_threads(void) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::begin_allow_threads() called\n");
// swap out threadstate and store in instance variable
switch_channel_t *channel = switch_core_session_get_channel(session);
PyThreadState *swapin_tstate = (PyThreadState *) switch_channel_get_private(channel, "SwapInThreadState");
// so lets assume the thread state was swapped in when the python script was started,
// therefore swapin_tstate will be NULL (because there is nothing to swap in, since its
// _already_ swapped in.)
if (swapin_tstate == NULL) {
// currently swapped in
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Threadstate swap-out!\n");
swapin_tstate = PyEval_SaveThread();
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "swapin_tstate: %p\n", swapin_tstate);
// give future swapper-inners something to actually swap in
switch_channel_set_private(channel, "SwapInThreadState", (void *) swapin_tstate);
cb_state.threadState = threadState; // TODO: get rid of this
args.buf = &cb_state;
ap = &args;
return true;
}
else {
// currently swapped out
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Threadstate already swapd-out! Skipping\n");
return false;
}
}
bool PySession::end_allow_threads(void) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::end_allow_threads() called\n");
// swap in threadstate from instance variable saved earlier
switch_channel_t *channel = switch_core_session_get_channel(session);
PyThreadState *swapin_tstate = (PyThreadState *) switch_channel_get_private(channel, "SwapInThreadState");
if (swapin_tstate == NULL) {
// currently swapped in
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Threadstate double swap-in! Skipping\n");
return false;
}
else {
// currently swapped out
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Threadstate swap-in!\n");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "swapin_tstate: %p\n", swapin_tstate);
PyEval_RestoreThread(swapin_tstate);
// dont give any swapper-inners the opportunity to do a double swap
switch_channel_set_private(channel, "SwapInThreadState", NULL);
return true;
}
}
void PySession::hangup(char *cause) {
// since we INCREF'd this function pointer earlier (so the py gc didnt reclaim it)
// we have to DECREF it, or else the PySession dtor will never get called and
// a zombie channel will be left over using up resources
if (cb_state.function != NULL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "xdecref on cb_state_function\n");
PyObject * func = (PyObject *) cb_state.function;
Py_XDECREF(func);
}
else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "cb_state.function is null\n");
}
CoreSession::hangup(cause);
}
PySession::~PySession() {
// Should we do any cleanup here?
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::~PySession started\n");
if (on_hangup) {
PyObject * func = (PyObject *) on_hangup;
Py_XDECREF(func);
}
if (cb_state.function != NULL) {
PyObject * func = (PyObject *) cb_state.function;
Py_XDECREF(func);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "PySession::~PySession finished\n");
}
@ -154,3 +272,6 @@ switch_status_t PythonDTMFCallback(switch_core_session_t *session,

21
src/mod/languages/mod_python/freeswitch_python.h
View File

@ -14,12 +14,10 @@ extern "C" {
switch_status_t PythonDTMFCallback(switch_core_session *session,
void *input,
switch_input_type_t itype,
void *buf,
unsigned int buflen);
typedef enum {
S_SWAPPED_IN = (1 << 0),
S_SWAPPED_OUT = (1 << 1)
} swap_state_t;
void console_log(char *level_str, char *msg);
void console_clean_log(char *msg);
@ -29,14 +27,21 @@ void api_reply_delete(char *reply);
class PySession : public CoreSession {
private:
void *threadState;
int swapstate;
public:
PySession();
PySession(char *uuid);
PySession(switch_core_session_t *session);
~PySession();
void setDTMFCallback(PyObject *pyfunc, char *funcargs);
void begin_allow_threads();
void end_allow_threads();
void setHangupHook(PyObject *pyfunc);
void check_hangup_hook();
void hangup(char *cause);
bool begin_allow_threads();
bool end_allow_threads();
switch_status_t run_dtmf_callback(void *input,
switch_input_type_t itype);
};

38
src/mod/languages/mod_python/mod_python.c
View File

@ -49,11 +49,12 @@ PyThreadState *mainThreadState = NULL;
void init_freeswitch(void);
static switch_api_interface_t python_run_interface;
SWITCH_MODULE_LOAD_FUNCTION(mod_python_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_python_shutdown);
SWITCH_MODULE_DEFINITION(mod_python, mod_python_load, mod_python_shutdown, NULL);
static void eval_some_python(char *uuid, char *args)
static void eval_some_python(char *uuid, char *args, switch_core_session_t *session)
{
PyThreadState *tstate = NULL;
char *dupargs = NULL;
@ -92,6 +93,11 @@ static void eval_some_python(char *uuid, char *args)
// swap in thread state
PyEval_AcquireThread(tstate);
if (session) {
// record the fact that thread state is swapped in
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_channel_set_private(channel, "SwapInThreadState", NULL);
}
init_freeswitch();
// import the module
@ -138,7 +144,9 @@ static void eval_some_python(char *uuid, char *args)
}
// invoke the handler
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Call python script \n");
result = PyEval_CallObjectWithKeywords(function, arg, (PyObject *)NULL);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Finished calling python script \n");
// check the result and print out any errors
if (!result) {
@ -160,7 +168,29 @@ static void eval_some_python(char *uuid, char *args)
Py_XDECREF(result);
// swap out thread state
PyEval_ReleaseThread(tstate);
if (session) {
// record the fact that thread state is swapped in
switch_channel_t *channel = switch_core_session_get_channel(session);
PyThreadState *swapin_tstate = (PyThreadState *) switch_channel_get_private(channel, "SwapInThreadState");
// so lets assume nothing in the python script swapped any thread state in
// or out .. thread state will currently be swapped in, and the SwapInThreadState
// will be null
if (swapin_tstate == NULL) {
// swap it out
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Threadstate mod_python.c swap-out! \n");
// PyEval_ReleaseThread(cur_tstate);
swapin_tstate = (void *) PyEval_SaveThread();
switch_channel_set_private(channel, "SwapInThreadState", (void *) swapin_tstate);
}
else {
// thread state is already swapped out, so, nothing for us to do
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "according to chan priv data, already swapped out \n");
}
}
else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Threadstate mod_python.c swap-out! \n");
PyEval_ReleaseThread(tstate);
}
switch_safe_free(dupargs);
@ -169,7 +199,7 @@ static void eval_some_python(char *uuid, char *args)
static void python_function(switch_core_session_t *session, char *data)
{
eval_some_python(switch_core_session_get_uuid(session), (char *)data);
eval_some_python(switch_core_session_get_uuid(session), (char *)data, session);
}
@ -183,7 +213,7 @@ static void *SWITCH_THREAD_FUNC py_thread_run(switch_thread_t *thread, void *obj
switch_memory_pool_t *pool;
struct switch_py_thread *pt = (struct switch_py_thread *) obj;
eval_some_python(NULL, strdup(pt->args));
eval_some_python(NULL, strdup(pt->args), NULL);
pool = pt->pool;
switch_core_destroy_memory_pool(&pool);

4
src/mod/languages/mod_python/mod_python.i
View File

@ -9,12 +9,16 @@
%cstring_bounded_mutable(char *dtmf_buf, 128);
%cstring_bounded_mutable(char *terminator, 8);
/** insert the following includes into generated code so it compiles */
%{
#include "switch_cpp.h"
#include "freeswitch_python.h"
%}
%ignore SwitchToMempool;
/**
* tell swig to grok everything defined in these header files and
* build all sorts of c wrappers and python shadows of the c wrappers.

920
src/mod/languages/mod_python/mod_python_wrap.cpp
View File

File diff suppressed because it is too large Load Diff

8
src/switch_core_file.c
View File

@ -95,6 +95,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_open(switch_file_handle_t *fh,
SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh, void *data, switch_size_t *len)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
return fh->file_interface->file_read(fh, data, len);
}
@ -102,6 +103,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
SWITCH_DECLARE(switch_status_t) switch_core_file_write(switch_file_handle_t *fh, void *data, switch_size_t *len)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
return fh->file_interface->file_write(fh, data, len);
}
@ -109,6 +111,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_write(switch_file_handle_t *fh,
SWITCH_DECLARE(switch_status_t) switch_core_file_seek(switch_file_handle_t *fh, unsigned int *cur_pos, int64_t samples, int whence)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
switch_set_flag(fh, SWITCH_FILE_SEEK);
return fh->file_interface->file_seek(fh, cur_pos, samples, whence);
@ -117,6 +120,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_seek(switch_file_handle_t *fh,
SWITCH_DECLARE(switch_status_t) switch_core_file_set_string(switch_file_handle_t *fh, switch_audio_col_t col, const char *string)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
return fh->file_interface->file_set_string(fh, col, string);
}
@ -124,6 +128,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_set_string(switch_file_handle_t
SWITCH_DECLARE(switch_status_t) switch_core_file_get_string(switch_file_handle_t *fh, switch_audio_col_t col, const char **string)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
return fh->file_interface->file_get_string(fh, col, string);
@ -132,6 +137,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_get_string(switch_file_handle_t
SWITCH_DECLARE(switch_status_t) switch_core_file_close(switch_file_handle_t *fh)
{
assert(fh != NULL);
assert(fh->file_interface != NULL);
switch_clear_flag(fh, SWITCH_FILE_OPEN);
return fh->file_interface->file_close(fh);

216
src/switch_cpp.cpp
View File

@ -7,7 +7,7 @@
#define sanity_check(x) do { if (!session) { switch_log_printf(SWITCH_CHANNEL_LOG,SWITCH_LOG_ERROR, "session is not initalized\n"); return x;}} while(0)
#define sanity_check_noreturn do { if (!session) { switch_log_printf(SWITCH_CHANNEL_LOG,SWITCH_LOG_ERROR, "session is not initalized\n"); return;}} while(0)
#define init_vars() do { session = NULL; channel = NULL; uuid = NULL; tts_name = NULL; voice_name = NULL; memset(&args, 0, sizeof(args)); ap = NULL; caller_profile.source = "mod_unknown"; caller_profile.dialplan = ""; caller_profile.context = ""; caller_profile.caller_id_name = ""; caller_profile.caller_id_number = ""; caller_profile.network_addr = ""; caller_profile.ani = ""; caller_profile.aniii = ""; caller_profile.rdnis = ""; caller_profile.username = ""; } while(0)
#define init_vars() do { session = NULL; channel = NULL; uuid = NULL; tts_name = NULL; voice_name = NULL; memset(&args, 0, sizeof(args)); ap = NULL; caller_profile.source = "mod_unknown"; caller_profile.dialplan = ""; caller_profile.context = ""; caller_profile.caller_id_name = ""; caller_profile.caller_id_number = ""; caller_profile.network_addr = ""; caller_profile.ani = ""; caller_profile.aniii = ""; caller_profile.rdnis = ""; caller_profile.username = ""; on_hangup = NULL; cb_state.function = NULL; } while(0)
@ -36,8 +36,13 @@ CoreSession::CoreSession(switch_core_session_t *new_session)
CoreSession::~CoreSession()
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CoreSession::~CoreSession desctructor");
switch_channel_t *channel = NULL;
if (session) {
channel = switch_core_session_get_channel(session);
if (channel && switch_test_flag(this, S_HUP)) {
switch_channel_hangup(channel, SWITCH_CAUSE_NORMAL_CLEARING);
}
switch_core_session_rwunlock(session);
}
@ -103,30 +108,35 @@ int CoreSession::playFile(char *file, char *timer_name)
timer_name = NULL;
}
store_file_handle(&fh);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "playFile begin_allow_threads\n");
begin_allow_threads();
status = switch_ivr_play_file(session, &fh, file, ap);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "playFile end_allow_threads\n");
end_allow_threads();
return status == SWITCH_STATUS_SUCCESS ? 1 : 0;
}
void CoreSession::setDTMFCallback(switch_input_callback_function_t cb,
void *buf,
uint32_t buflen)
{
sanity_check_noreturn;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CoreSession::setDTMFCallback.");
if (cb) {
args.buf = buf;
args.buflen = buflen;
args.input_callback = cb;
ap = &args;
} else {
memset(&args, 0, sizeof(args));
ap = NULL;
}
}
void CoreSession::setDTMFCallback(void *cbfunc, char *funcargs) {
cb_state.funcargs = funcargs;
cb_state.function = cbfunc;
args.buf = &cb_state;
args.buflen = sizeof(cb_state); // not sure what this is used for, copy mod_spidermonkey
switch_channel_set_private(channel, "CoreSession", this);
// we cannot set the actual callback to a python function, because
// the callback is a function pointer with a specific signature.
// so, set it to the following c function which will act as a proxy,
// finding the python callback in the args callback args structure
args.input_callback = dtmf_callback;
ap = &args;
}
int CoreSession::speak(char *text)
{
@ -134,6 +144,12 @@ int CoreSession::speak(char *text)
switch_codec_t *codec;
sanity_check(-1);
// create and store an empty filehandle in callback args
// to workaround a bug in the presumptuous process_callback_result()
switch_file_handle_t fh = { 0 };
store_file_handle(&fh);
if (!tts_name) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No TTS engine specified");
return SWITCH_STATUS_FALSE;
@ -161,7 +177,8 @@ void CoreSession::set_tts_parms(char *tts_name_p, char *voice_name_p)
}
int CoreSession::getDigits(char *dtmf_buf,
int len,
int buflen,
int maxdigits,
char *terminators,
char *terminator,
int timeout)
@ -169,13 +186,16 @@ int CoreSession::getDigits(char *dtmf_buf,
switch_status_t status;
sanity_check(-1);
begin_allow_threads();
status = switch_ivr_collect_digits_count(session,
dtmf_buf,
(uint32_t) len,
(uint32_t) len,
(uint32_t) buflen,
(uint32_t) maxdigits,
terminators,
terminator,
(uint32_t) timeout);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "getDigits dtmf_buf: %s\n", dtmf_buf);
end_allow_threads();
return status == SWITCH_STATUS_SUCCESS ? 1 : 0;
}
@ -213,6 +233,9 @@ int CoreSession::playAndGetDigits(int min_digits,
bad_input_audio_files,
dtmf_buf, 128,
digits_regex);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "playAndGetDigits dtmf_buf: %s\n", dtmf_buf);
end_allow_threads();
return status == SWITCH_STATUS_SUCCESS ? 1 : 0;
}
@ -318,6 +341,52 @@ int CoreSession::recordFile(char *file_name, int max_len, int silence_threshold,
}
int CoreSession::flushEvents()
{
switch_event_t *event;
switch_channel_t *channel;
if (!session) {
return SWITCH_STATUS_FALSE;
}
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
while (switch_core_session_dequeue_event(session, &event) == SWITCH_STATUS_SUCCESS) {
switch_event_destroy(&event);
}
return SWITCH_STATUS_SUCCESS;
}
int CoreSession::flushDigits()
{
char buf[256];
switch_size_t has;
switch_channel_t *channel;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
while ((has = switch_channel_has_dtmf(channel))) {
switch_channel_dequeue_dtmf(channel, buf, sizeof(buf));
}
return SWITCH_STATUS_SUCCESS;
}
int CoreSession::setAutoHangup(bool val)
{
if (!session) {
return SWITCH_STATUS_FALSE;
}
if (val) {
switch_set_flag(this, S_HUP);
} else {
switch_clear_flag(this, S_HUP);
}
return SWITCH_STATUS_SUCCESS;
}
void CoreSession::setCallerData(char *var, char *val) {
if (strcmp(var, "dialplan") == 0) {
@ -350,12 +419,17 @@ void CoreSession::setCallerData(char *var, char *val) {
}
void CoreSession::begin_allow_threads() {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CoreSession::begin_allow_threads() called and does nothing\n");
}
void CoreSession::setHangupHook(void *hangup_func) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CoreSession::seHangupHook, hangup_func: %p\n", hangup_func);
on_hangup = hangup_func;
switch_channel_t *channel = switch_core_session_get_channel(session);
assert(channel != NULL);
hook_state = switch_channel_get_state(channel);
switch_channel_set_private(channel, "CoreSession", this);
switch_core_event_hook_add_state_change(session, hanguphook);
void CoreSession::end_allow_threads() {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CoreSession::end_allow_threads() called and does nothing\n");
}
/** \brief Store a file handle in the callback args
@ -424,6 +498,64 @@ void bridge(CoreSession &session_a, CoreSession &session_b)
}
switch_status_t hanguphook(switch_core_session_t *session_hungup)
{
switch_channel_t *channel;
CoreSession *coresession = NULL;
switch_channel_state_t state;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "hangup_hook called\n");
fflush(stdout);
channel = switch_core_session_get_channel(session_hungup);
assert(channel != NULL);
state = switch_channel_get_state(channel);
if ((coresession = (CoreSession *) switch_channel_get_private(channel, "CoreSession"))) {
if (coresession->hook_state != state) {
coresession->hook_state = state;
coresession->check_hangup_hook();
}
}
return SWITCH_STATUS_SUCCESS;
}
switch_status_t dtmf_callback(switch_core_session_t *session_cb,
void *input,
switch_input_type_t itype,
void *buf,
unsigned int buflen) {
switch_channel_t *channel;
CoreSession *coresession = NULL;
switch_status_t result;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "dtmf_callback called\n");
fflush(stdout);
channel = switch_core_session_get_channel(session_cb);
assert(channel != NULL);
coresession = (CoreSession *) switch_channel_get_private(channel, "CoreSession");
if (!coresession) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid CoreSession\n");
return SWITCH_STATUS_FALSE;
}
result = coresession->run_dtmf_callback(input, itype);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "process_callback_result returned\n");
if (result) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "process_callback_result returned: %d\n", result);
}
return result;
}
switch_status_t process_callback_result(char *ret,
struct input_callback_state *cb_state,
@ -431,16 +563,40 @@ switch_status_t process_callback_result(char *ret,
{
switch_file_handle_t *fh = NULL;
if (!cb_state) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because cb_state is null\n");
return SWITCH_STATUS_FALSE;
}
if (!cb_state->extra) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because cb_state->extra is null\n");
return SWITCH_STATUS_FALSE;
}
fh = (switch_file_handle_t *) cb_state->extra;
if (!fh) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because fh is null\n");
return SWITCH_STATUS_FALSE;
}
if (!fh->file_interface) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because fh->file_interface is null\n");
return SWITCH_STATUS_FALSE;
}
if (!ret) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because ret is null\n");
return SWITCH_STATUS_FALSE;
}
if (!session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Process callback result aborted because session is null\n");
return SWITCH_STATUS_FALSE;
}
if (!strncasecmp(ret, "speed", 4)) {
char *p;
@ -481,7 +637,7 @@ switch_status_t process_callback_result(char *ret,
unsigned int pos = 0;
char *p;
codec = switch_core_session_get_read_codec(session);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "got codec\n");
if ((p = strchr(ret, ':'))) {
p++;
if (*p == '+' || *p == '-') {
@ -491,14 +647,20 @@ switch_status_t process_callback_result(char *ret,
}
if (step > 0) {
samps = step * (codec->implementation->samples_per_second / 1000);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "going to seek\n");
switch_core_file_seek(fh, &pos, samps, SEEK_CUR);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "done seek\n");
} else {
samps = step * (codec->implementation->samples_per_second / 1000);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "going to seek\n");
switch_core_file_seek(fh, &pos, fh->pos - samps, SEEK_SET);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "done seek\n");
}
} else {
samps = atoi(p) * (codec->implementation->samples_per_second / 1000);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "going to seek\n");
switch_core_file_seek(fh, &pos, samps, SEEK_SET);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "done seek\n");
}
}
@ -506,9 +668,11 @@ switch_status_t process_callback_result(char *ret,
}
if (!strcmp(ret, "true") || !strcmp(ret, "undefined")) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "return success\n");
return SWITCH_STATUS_SUCCESS;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "no match, return false\n");
return SWITCH_STATUS_FALSE;