128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (c) 2003 - 2005 Tilghman Lesher. All rights reserved.
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*
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* Tilghman Lesher <asterisk__app_random__200508@the-tilghman.com>
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*
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* This code is released by the author with no restrictions on usage or distribution.
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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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*
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* \brief Random application
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*
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* \author Tilghman Lesher <asterisk__app_random__200508@the-tilghman.com>
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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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static char *tdesc = "Random goto";
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static char *app_random = "Random";
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static char *random_synopsis = "Conditionally branches, based upon a probability";
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static char *random_descrip =
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"Random([probability]:[[context|]extension|]priority)\n"
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" probability := INTEGER in the range 1 to 100\n";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static char random_state[256];
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static int random_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;
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char *prob;
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int probint;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Random requires an argument ([probability]:[[context|]extension|]priority)\n");
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return -1;
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}
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LOCAL_USER_ADD(u);
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s = ast_strdupa(data);
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if (!s) {
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ast_log(LOG_ERROR, "Out of memory!\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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prob = strsep(&s,":");
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if ((!prob) || (sscanf(prob, "%d", &probint) != 1))
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probint = 0;
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if ((random() % 100) + probint > 100) {
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res = ast_parseable_goto(chan, s);
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if (option_verbose > 2)
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ast_verbose( VERBOSE_PREFIX_3 "Random branches to (%s,%s,%d)\n",
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chan->context,chan->exten, chan->priority+1);
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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_random);
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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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initstate((getppid() * 65535 + getpid()) % RAND_MAX, random_state, 256);
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return ast_register_application(app_random, random_exec, random_synopsis, random_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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