(closes issue ASTERISK-23391) Reported by: Corey Farrell Review: https://reviewboard.asterisk.org/r/3386/ ........ Merged revisions 411313 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 411314 from http://svn.asterisk.org/svn/asterisk/branches/11 ........ Merged revisions 411315 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@411328 65c4cc65-6c06-0410-ace0-fbb531ad65f3
201 lines
5.5 KiB
C
201 lines
5.5 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Digium, Inc.
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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 Dialplan group functions check if a dialplan entry exists
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*
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* \author Gregory Nietsky AKA irroot <gregory@networksentry.co.za>
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* \author Russell Bryant <russell@digium.com>
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*
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* \ingroup functions
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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/module.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/app.h"
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/*** DOCUMENTATION
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<function name="DIALPLAN_EXISTS" language="en_US">
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<synopsis>
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Checks the existence of a dialplan target.
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</synopsis>
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<syntax>
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<parameter name="context" required="true" />
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<parameter name="extension" />
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<parameter name="priority" />
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</syntax>
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<description>
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<para>This function returns <literal>1</literal> if the target exits. Otherwise, it returns <literal>0</literal>.</para>
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</description>
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</function>
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<function name="VALID_EXTEN" language="en_US">
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<synopsis>
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Determine whether an extension exists or not.
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</synopsis>
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<syntax>
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<parameter name="context">
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<para>Defaults to the current context</para>
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</parameter>
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<parameter name="extension" required="true" />
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<parameter name="priority">
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<para>Priority defaults to <literal>1</literal>.</para>
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</parameter>
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</syntax>
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<description>
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<para>Returns a true value if the indicated <replaceable>context</replaceable>,
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<replaceable>extension</replaceable>, and <replaceable>priority</replaceable> exist.</para>
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<warning><para>This function has been deprecated in favor of the <literal>DIALPLAN_EXISTS()</literal> function</para></warning>
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</description>
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</function>
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***/
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static int isexten_function_read(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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char *parse;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(context);
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AST_APP_ARG(exten);
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AST_APP_ARG(priority);
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);
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strcpy(buf, "0");
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if (ast_strlen_zero(data)) {
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ast_log(LOG_ERROR, "DIALPLAN_EXISTS() requires an argument\n");
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return -1;
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}
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parse = ast_strdupa(data);
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AST_STANDARD_APP_ARGS(args, parse);
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if (!ast_strlen_zero(args.priority)) {
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int priority_num;
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if (sscanf(args.priority, "%30d", &priority_num) == 1 && priority_num > 0) {
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int res;
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res = ast_exists_extension(chan, args.context, args.exten, priority_num,
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!chan ? NULL :
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL));
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if (res)
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strcpy(buf, "1");
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} else {
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int res;
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res = ast_findlabel_extension(chan, args.context, args.exten, args.priority,
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!chan ? NULL :
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL));
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if (res > 0)
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strcpy(buf, "1");
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}
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} else if (!ast_strlen_zero(args.exten)) {
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int res;
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res = ast_exists_extension(chan, args.context, args.exten, 1,
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!chan ? NULL :
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL));
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if (res)
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strcpy(buf, "1");
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} else if (!ast_strlen_zero(args.context)) {
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if (ast_context_find(args.context))
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strcpy(buf, "1");
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} else {
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ast_log(LOG_ERROR, "Invalid arguments provided to DIALPLAN_EXISTS\n");
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return -1;
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}
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return 0;
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}
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static int acf_isexten_exec(struct ast_channel *chan, const char *cmd, char *parse, char *buffer, size_t buflen)
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{
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int priority_int;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(context);
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AST_APP_ARG(extension);
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AST_APP_ARG(priority);
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);
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if (!chan) {
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ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
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return -1;
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}
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AST_STANDARD_APP_ARGS(args, parse);
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if (ast_strlen_zero(args.context)) {
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args.context = ast_strdupa(ast_channel_context(chan));
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}
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if (ast_strlen_zero(args.extension)) {
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ast_log(LOG_WARNING, "Syntax: VALID_EXTEN([<context>],<extension>[,<priority>]) - missing argument <extension>!\n");
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return -1;
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}
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if (ast_strlen_zero(args.priority)) {
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priority_int = 1;
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} else {
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priority_int = atoi(args.priority);
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}
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if (ast_exists_extension(chan, args.context, args.extension, priority_int,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
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ast_copy_string(buffer, "1", buflen);
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} else {
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ast_copy_string(buffer, "0", buflen);
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}
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return 0;
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}
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static struct ast_custom_function isexten_function = {
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.name = "DIALPLAN_EXISTS",
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.read = isexten_function_read,
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.read_max = 2,
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};
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static struct ast_custom_function acf_isexten = {
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.name = "VALID_EXTEN",
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.read = acf_isexten_exec,
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};
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static int unload_module(void)
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{
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int res = ast_custom_function_unregister(&isexten_function);
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res |= ast_custom_function_unregister(&acf_isexten);
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return res;
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}
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static int load_module(void)
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{
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int res = ast_custom_function_register(&isexten_function);
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res |= ast_custom_function_register(&acf_isexten);
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return res;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Dialplan Context/Extension/Priority Checking Functions",
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.load = load_module,
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.unload = unload_module,
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.load_pri = AST_MODPRI_APP_DEPEND,
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);
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