a525edea59
https://origsvn.digium.com/svn/asterisk/branches/1.10 ................ r328247 | lmadsen | 2011-07-14 16:25:31 -0400 (Thu, 14 Jul 2011) | 14 lines Merged revisions 328209 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.8 ........ r328209 | lmadsen | 2011-07-14 16:13:06 -0400 (Thu, 14 Jul 2011) | 6 lines Introduce <support_level> tags in MODULEINFO. This change introduces MODULEINFO into many modules in Asterisk in order to show the community support level for those modules. This is used by changes committed to menuselect by Russell Bryant recently (r917 in menuselect). More information about the support level types and what they mean is available on the wiki at https://wiki.asterisk.org/wiki/display/AST/Asterisk+Module+Support+States ........ ................ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@328259 65c4cc65-6c06-0410-ace0-fbb531ad65f3
188 lines
5.8 KiB
C
188 lines
5.8 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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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 Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Loopback PBX Module
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*
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/config.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/frame.h"
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#include "asterisk/cli.h"
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#include "asterisk/lock.h"
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#include "asterisk/md5.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/chanvars.h"
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#include "asterisk/sched.h"
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#include "asterisk/io.h"
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#include "asterisk/utils.h"
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#include "asterisk/astdb.h"
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/* Loopback switch creates a 'tunnel' to another context. When extension
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lookups pass through the 'tunnel', Asterisk expressions can be used
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to modify the target extension, context, and priority in any way desired.
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If there is a match at the far end, execution jumps through the 'tunnel'
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to the matched context, extension, and priority.
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Global variables as well as ${CONTEXT}, ${EXTEN}, and ${PRIORITY} are
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available for substitution. After substitution Loopback expects to get
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a string of the form:
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[exten]@context[:priority][/extramatch]
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Where exten, context, and priority are another extension, context, and priority
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to lookup and "extramatch" is a dialplan extension pattern which the *original*
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number must match. If exten or priority are empty, the original values are
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used.
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Note that the search context MUST be a different context from the current
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context or the search will not succeed. This is intended to reduce the
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likelihood of loops (they're still possible if you try hard, so be careful!)
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*/
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#define LOOPBACK_COMMON \
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char buf[1024]; \
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int res; \
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char *newexten=(char *)exten, *newcontext=(char *)context; \
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int newpriority=priority; \
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char *newpattern=NULL; \
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loopback_subst(buf, sizeof(buf), exten, context, priority, data); \
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loopback_parse(&newexten, &newcontext, &newpriority, &newpattern, buf); \
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ast_debug(1, "Parsed into %s @ %s priority %d\n", newexten, newcontext, newpriority); \
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if (!strcasecmp(newcontext, context)) return -1
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static char *loopback_subst(char *buf, int buflen, const char *exten, const char *context, int priority, const char *data)
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{
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struct ast_var_t *newvariable;
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struct varshead headp;
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char tmp[80];
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snprintf(tmp, sizeof(tmp), "%d", priority);
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AST_LIST_HEAD_INIT_NOLOCK(&headp);
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newvariable = ast_var_assign("EXTEN", exten);
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AST_LIST_INSERT_HEAD(&headp, newvariable, entries);
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newvariable = ast_var_assign("CONTEXT", context);
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AST_LIST_INSERT_HEAD(&headp, newvariable, entries);
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newvariable = ast_var_assign("PRIORITY", tmp);
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AST_LIST_INSERT_HEAD(&headp, newvariable, entries);
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/* Substitute variables */
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pbx_substitute_variables_varshead(&headp, data, buf, buflen);
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/* free the list */
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while ((newvariable = AST_LIST_REMOVE_HEAD(&headp, entries)))
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ast_var_delete(newvariable);
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return buf;
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}
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static void loopback_parse(char **newexten, char **newcontext, int *priority, char **newpattern, char *buf)
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{
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char *con;
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char *pri;
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*newpattern = strchr(buf, '/');
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if (*newpattern)
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*(*newpattern)++ = '\0';
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con = strchr(buf, '@');
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if (con) {
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*con++ = '\0';
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pri = strchr(con, ':');
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} else
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pri = strchr(buf, ':');
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if (!ast_strlen_zero(buf))
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*newexten = buf;
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if (!ast_strlen_zero(con))
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*newcontext = con;
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if (!ast_strlen_zero(pri))
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sscanf(pri, "%30d", priority);
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}
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static int loopback_exists(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data)
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{
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LOOPBACK_COMMON;
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res = ast_exists_extension(chan, newcontext, newexten, newpriority, callerid);
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if (newpattern && !ast_extension_match(newpattern, exten))
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res = 0;
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return res;
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}
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static int loopback_canmatch(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data)
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{
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LOOPBACK_COMMON;
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res = ast_canmatch_extension(chan, newcontext, newexten, newpriority, callerid);
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if (newpattern && !ast_extension_match(newpattern, exten))
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res = 0;
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return res;
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}
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static int loopback_exec(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data)
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{
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int found;
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LOOPBACK_COMMON;
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res = ast_spawn_extension(chan, newcontext, newexten, newpriority, callerid, &found, 0);
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return res;
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}
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static int loopback_matchmore(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data)
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{
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LOOPBACK_COMMON;
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res = ast_matchmore_extension(chan, newcontext, newexten, newpriority, callerid);
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if (newpattern && !ast_extension_match(newpattern, exten))
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res = 0;
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return res;
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}
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static struct ast_switch loopback_switch =
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{
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name: "Loopback",
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description: "Loopback Dialplan Switch",
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exists: loopback_exists,
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canmatch: loopback_canmatch,
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exec: loopback_exec,
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matchmore: loopback_matchmore,
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};
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static int unload_module(void)
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{
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ast_unregister_switch(&loopback_switch);
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return 0;
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}
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static int load_module(void)
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{
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if (ast_register_switch(&loopback_switch))
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return AST_MODULE_LOAD_FAILURE;
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return AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Loopback Switch");
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