mirror of
https://github.com/asterisk/asterisk.git
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4d2537ae11
- locking of functions list during registration/unregistration/searching - rename of function description structure to be consistent with the rest of the API - addition of 'desc' element to description structure, for detailed description (like applications) - addition of 'show function' CLI command to show function details - conversion of existing functions to use uppercase names to match policy - creation of new 'pbx_functions.so' module to contain standard 'builtin' functions - removal of all builtin functions from pbx.c and apps and placement into new 'funcs' directory git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5583 65c4cc65-6c06-0410-ace0-fbb531ad65f3
118 lines
2.8 KiB
C
Executable File
118 lines
2.8 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* String manipulation dialplan functions
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*
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* Copyright (C) 2005, Digium, Inc.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <regex.h>
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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static char *function_fieldqty(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *varname, *varval, workspace[256];
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char *delim = ast_strdupa(data);
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int fieldcount = 0;
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if (delim) {
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varname = strsep(&delim, "|");
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pbx_retrieve_variable(chan, varname, &varval, workspace, sizeof(workspace), NULL);
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while (strsep(&varval, delim))
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fieldcount++;
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snprintf(buf, len, "%d", fieldcount);
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} else {
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ast_log(LOG_ERROR, "Out of memory\n");
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strncpy(buf, "1", len);
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}
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return buf;
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function fieldqty_function = {
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.name = "FIELDQTY",
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.synopsis = "Count the fields, with an arbitrary delimiter",
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.syntax = "FIELDQTY(<varname>,<delim>)",
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.read = function_fieldqty,
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};
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static char *builtin_function_regex(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret_true = "1", *ret_false = "0", *ret;
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char *arg, *earg, *tmp, errstr[256] = "";
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int errcode;
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regex_t regexbuf;
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ret = ret_false; /* convince me otherwise */
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tmp = ast_strdupa(data);
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if (tmp) {
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/* Regex in quotes */
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arg = strchr(tmp, '"');
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if (arg) {
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arg++;
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earg = strrchr(arg, '"');
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if (earg) {
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*earg = '\0';
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}
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} else {
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arg = tmp;
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}
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if ((errcode = regcomp(®exbuf, arg, REG_EXTENDED | REG_NOSUB))) {
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regerror(errcode, ®exbuf, errstr, sizeof(errstr));
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ast_log(LOG_WARNING, "Malformed input %s(%s): %s\n", cmd, data, errstr);
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ret = NULL;
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} else {
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ret = regexec(®exbuf, data, 0, NULL, 0) ? ret_false : ret_true;
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}
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regfree(®exbuf);
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} else {
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ast_log(LOG_ERROR, "Out of memory in %s(%s)\n", cmd, data);
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}
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return ret;
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function regex_function = {
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.name = "REGEX",
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.synopsis = "Regular Expression: Returns 1 if data matches regular expression.",
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.syntax = "REGEX(\"<regular expression>\" <data>)",
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.read = builtin_function_regex,
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};
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static char *builtin_function_len(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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int length = 0;
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if (data) {
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length = strlen(data);
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}
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snprintf(buf, len, "%d", length);
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return buf;
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function len_function = {
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.name = "LEN",
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.synopsis = "Returns the length of the argument given",
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.syntax = "LEN(<string>)",
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.read = builtin_function_len,
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};
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