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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Random application
*
* Copyright (c) 2003-2004 Tilghman Lesher. All rights reserved.
*
* Tilghman Lesher <asterisk__app_random__20040111@the-tilghman.com>
*
* This code is released by the author with no restrictions on usage or distribution.
*
*/
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/options.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
static char *tdesc = "Random goto";
static char *app_random = "Random";
static char *random_synopsis = "Conditionally branches, based upon a probability";
static char *random_descrip =
"Random([probability]:[[context|]extension|]priority)\n"
" probability := INTEGER in the range 1 to 100\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int random_exec(struct ast_channel *chan, void *data)
{
int res=0;
struct localuser *u;
char *s, *ts;
char *exten, *pri, *context;
char *prob;
int probint, priorityint;
if (!data) {
ast_log(LOG_WARNING, "Random requires an argument ([probability]:[[context|]extension|]priority)\n");
return -1;
}
LOCAL_USER_ADD(u);
s = ast_strdupa((void *) data);
prob = strsep(&ts,":");
if ((!prob) || (sscanf(prob, "%d", &probint) != 1))
probint = 0;
if ((random() % 100) + probint > 100) {
context = strsep(&s, "|");
exten = strsep(&s, "|");
if (!exten) {
/* Only a priority */
pri = context;
exten = NULL;
context = NULL;
} else {
pri = strsep(&s, "|");
if (!pri) {
pri = exten;
exten = context;
context = NULL;
}
}
if (!pri) {
ast_log(LOG_WARNING, "No label specified\n");
LOCAL_USER_REMOVE(u);
return -1;
} else if (sscanf(pri, "%d", &priorityint) != 1) {
ast_log(LOG_WARNING, "Priority '%s' must be a number > 0\n", pri);
LOCAL_USER_REMOVE(u);
return -1;
}
/* At this point we have a priority and */
/* maybe an extension and a context */
chan->priority = priorityint - 1;
if (exten && strcasecmp(exten, "BYEXTENSION"))
strncpy(chan->exten, exten, sizeof(chan->exten)-1);
if (context)
strncpy(chan->context, context, sizeof(chan->context)-1);
if (option_verbose > 2)
ast_verbose( VERBOSE_PREFIX_3 "Random branches to (%s,%s,%d)\n",
chan->context,chan->exten, chan->priority+1);
LOCAL_USER_REMOVE(u);
}
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return ast_unregister_application(app_random);
}
int load_module(void)
{
srandom((unsigned int)getpid() + (unsigned int)time(NULL));
return ast_register_application(app_random, random_exec, random_synopsis, random_descrip);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}