128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (c) 2004 - 2005, Tilghman Lesher. All rights reserved.
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*
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* Tilghman Lesher <app_eval__v001@the-tilghman.com>
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*
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* This code is released by the author with no restrictions on usage.
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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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*/
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/*! \file
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* \brief Eval application
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*
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* \author Tilghman Lesher <app_eval__v001@the-tilghman.com>
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*
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* \ingroup applications
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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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/options.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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/* Maximum length of any variable */
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#define MAXRESULT 1024
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static char *tdesc = "Reevaluates strings";
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static char *app_eval = "Eval";
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static char *eval_synopsis = "Evaluates a string";
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static char *eval_descrip =
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"Usage: Eval(newvar=somestring)\n"
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" Normally Asterisk evaluates variables inline. But what if you want to\n"
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"store variable offsets in a database, to be evaluated later? Eval is\n"
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"the answer, by allowing a string to be evaluated twice in the dialplan,\n"
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"the first time as part of the normal dialplan, and the second using Eval.\n";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static int eval_exec(struct ast_channel *chan, void *data)
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{
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int res=0;
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struct localuser *u;
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char *s, *newvar=NULL, tmp[MAXRESULT];
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static int dep_warning = 0;
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LOCAL_USER_ADD(u);
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if (!dep_warning) {
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ast_log(LOG_WARNING, "This application has been deprecated in favor of the dialplan function, EVAL\n");
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dep_warning = 1;
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}
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/* Check and parse arguments */
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if (data) {
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s = ast_strdupa((char *)data);
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if (s) {
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newvar = strsep(&s, "=");
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if (newvar && (newvar[0] != '\0')) {
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memset(tmp, 0, MAXRESULT);
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pbx_substitute_variables_helper(chan, s, tmp, MAXRESULT - 1);
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pbx_builtin_setvar_helper(chan, newvar, tmp);
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}
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} else {
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ast_log(LOG_ERROR, "Out of memory\n");
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res = -1;
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}
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}
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LOCAL_USER_REMOVE(u);
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return res;
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}
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int unload_module(void)
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{
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int res;
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res = ast_unregister_application(app_eval);
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STANDARD_HANGUP_LOCALUSERS;
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return res;
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}
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int load_module(void)
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{
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return ast_register_application(app_eval, eval_exec, eval_synopsis, eval_descrip);
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}
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char *description(void)
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{
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return tdesc;
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}
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int usecount(void)
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{
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int res;
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STANDARD_USECOUNT(res);
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return res;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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