207 lines
5.7 KiB
C
207 lines
5.7 KiB
C
/*
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* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
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*
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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*
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* The Initial Developer of the Original Code is
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* Anthony Minessale II <anthmct@yahoo.com>
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* Portions created by the Initial Developer are Copyright (C)
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Anthony Minessale II <anthmct@yahoo.com>
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*
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*
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* mod_pcre.c -- Regex Dialplan Module
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*
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*/
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#include <switch.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <pcre.h>
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static const char modname[] = "mod_pcre";
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#define cleanre() if (re) {\
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pcre_free(re);\
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re = NULL;\
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}
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switch_caller_extension *dialplan_hunt(switch_core_session *session)
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{
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switch_caller_profile *caller_profile;
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switch_caller_extension *extension = NULL;
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switch_channel *channel;
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char *cf = "regextensions.conf";
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switch_config cfg;
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char *var, *val;
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char app[1024] = "";
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int catno = -1;
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char *exten_name = NULL;
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pcre *re = NULL;
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int match_count = 0;
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int ovector[30];
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channel = switch_core_session_get_channel(session);
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caller_profile = switch_channel_get_caller_profile(channel);
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "Processing %s->%s!\n", caller_profile->caller_id_name,
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caller_profile->destination_number);
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if (!switch_config_open_file(&cfg, cf)) {
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "open of %s failed\n", cf);
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switch_channel_hangup(channel);
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return NULL;
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}
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while (switch_config_next_pair(&cfg, &var, &val)) {
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if (cfg.catno != catno) { /* new category */
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catno = cfg.catno;
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exten_name = cfg.category;
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cleanre();
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match_count = 0;
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}
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if (!strcasecmp(var, "regex")) {
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const char *error = NULL;
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int erroffset = 0;
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cleanre();
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re = pcre_compile(val, /* the pattern */
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0, /* default options */
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&error, /* for error message */
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&erroffset, /* for error offset */
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NULL); /* use default character tables */
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if (error) {
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "COMPILE ERROR: %d [%s]\n", erroffset, error);
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cleanre();
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switch_channel_hangup(channel);
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return NULL;
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}
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match_count = pcre_exec(re, /* result of pcre_compile() */
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NULL, /* we didn't study the pattern */
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caller_profile->destination_number, /* the subject string */
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strlen(caller_profile->destination_number), /* the length of the subject string */
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0, /* start at offset 0 in the subject */
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0, /* default options */
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ovector, /* vector of integers for substring information */
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sizeof(ovector) / sizeof(ovector[0])); /* number of elements (NOT size in bytes) */
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} else if (match_count > 0 && !strcasecmp(var, "match")) {
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if (!re) {
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "ERROR: match without regex in %s line %d\n", cfg.path,
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cfg.lineno);
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continue;
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} else {
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char newval[1024] = "";
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char index[10] = "";
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char replace[128] = "";
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int x, y = 0, z = 0, num = 0;
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char *data;
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for (x = 0; x < sizeof(newval) && x < strlen(val);) {
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if (val[x] == '$') {
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x++;
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while (val[x] > 47 && val[x] < 58) {
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index[z++] = val[x];
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x++;
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}
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index[z++] = '\0';
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z = 0;
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num = atoi(index);
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if (pcre_copy_substring
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(caller_profile->destination_number, ovector, match_count, num, replace,
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sizeof(replace)) > 0) {
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int r;
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for (r = 0; r < strlen(replace); r++) {
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newval[y++] = replace[r];
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}
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}
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} else {
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newval[y++] = val[x];
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x++;
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}
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}
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newval[y++] = '\0';
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memset(app, 0, sizeof(app));
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switch_copy_string(app, newval, sizeof(app));
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if ((data = strchr(app, ' '))) {
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*data = '\0';
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data++;
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} else {
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "invalid extension on line %d\n", cfg.lineno);
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continue;
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}
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if (!extension) {
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if (!
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(extension =
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switch_caller_extension_new(session, exten_name, caller_profile->destination_number))) {
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switch_console_printf(SWITCH_CHANNEL_CONSOLE, "memory error!\n");
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break;
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}
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}
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switch_caller_extension_add_application(session, extension, app, data);
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}
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}
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}
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switch_config_close_file(&cfg);
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if (extension) {
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switch_channel_set_state(channel, CS_EXECUTE);
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} else {
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switch_channel_hangup(channel);
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}
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cleanre();
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return extension;
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}
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static const switch_dialplan_interface dialplan_interface = {
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/*.interface_name = */ "pcre",
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/*.hunt_function = */ dialplan_hunt
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/*.next = NULL */
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};
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static const switch_loadable_module_interface dialplan_module_interface = {
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/*.module_name = */ modname,
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/*.endpoint_interface = */ NULL,
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/*.timer_interface = */ NULL,
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/*.dialplan_interface = */ &dialplan_interface,
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/*.codec_interface = */ NULL,
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/*.application_interface = */ NULL
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};
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SWITCH_MOD_DECLARE(switch_status) switch_module_load(const switch_loadable_module_interface **interface, char *filename)
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{
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/* connect my internal structure to the blank pointer passed to me */
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*interface = &dialplan_module_interface;
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/* indicate that the module should continue to be loaded */
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return SWITCH_STATUS_SUCCESS;
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}
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