diff --git a/apps/app_eval.c b/apps/app_eval.c new file mode 100755 index 0000000000000000000000000000000000000000..dc61df2f6dadece8b17999f785e9fb0c3dc230ed --- /dev/null +++ b/apps/app_eval.c @@ -0,0 +1,101 @@ +/* + * Asterisk -- A telephony toolkit for Linux. + * + * Eval application + * + * Copyright (c) 2004 Tilghman Lesher. All rights reserved. + * + * Tilghman Lesher <app_eval__v001@the-tilghman.com> + * + * $Id$ + * + * This code is released by the author with no restrictions on usage. + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <asterisk/file.h> +#include <asterisk/logger.h> +#include <asterisk/options.h> +#include <asterisk/channel.h> +#include <asterisk/pbx.h> +#include <asterisk/module.h> + +/* Maximum length of any variable */ +#define MAXRESULT 1024 + +static char *tdesc = "Reevaluates strings"; + +static char *app_eval = "Eval"; + +static char *eval_synopsis = "Eval(newvar=somestring)"; + +static char *eval_descrip = +"Eval(newvar=somestring)\n" +" Normally Asterisk evaluates variables inline. But what if you want to\n" +"store variable offsets in a database, to be evaluated later? Eval is\n" +"the answer, by allowing a string to be evaluated twice in the dialplan,\n" +"the first time as part of the normal dialplan, and the second using Eval.\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +static int eval_exec(struct ast_channel *chan, void *data) +{ + int res=0; + struct localuser *u; + char *s, *newvar=NULL, tmp[MAXRESULT]; + + LOCAL_USER_ADD(u); + + /* Check and parse arguments */ + if (data) { + s = ast_strdupa((char *)data); + if (s) { + newvar = strsep(&s, "="); + if (newvar && (newvar[0] != '\0')) { + memset(tmp, 0, MAXRESULT); + pbx_substitute_variables_helper(chan, s, tmp, MAXRESULT - 1); + pbx_builtin_setvar_helper(chan, newvar, tmp); + } + } else { + ast_log(LOG_ERROR, "Out of memory\n"); + res = -1; + } + } + + LOCAL_USER_REMOVE(u); + return res; +} + +int unload_module(void) +{ + STANDARD_HANGUP_LOCALUSERS; + return ast_unregister_application(app_eval); +} + +int load_module(void) +{ + return ast_register_application(app_eval, eval_exec, eval_synopsis, eval_descrip); +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +}