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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Wait for Ring Application
*
* \ingroup applications
*/
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/options.h"
#include "asterisk/lock.h"
static char *synopsis = "Wait for Ring Application";
static char *tdesc = "Waits until first ring after time";
static char *desc = " WaitForRing(timeout)\n"
"Returns 0 after waiting at least timeout seconds. and\n"
"only after the next ring has completed. Returns 0 on\n"
"success or -1 on hangup\n";
static char *app = "WaitForRing";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int waitforring_exec(struct ast_channel *chan, void *data)
{
struct localuser *u;
struct ast_frame *f;
int res = 0;
int ms;
if (!data || (sscanf(data, "%d", &ms) != 1)) {
ast_log(LOG_WARNING, "WaitForRing requires an argument (minimum seconds)\n");
return 0;
}
LOCAL_USER_ADD(u);
ms *= 1000;
while(ms > 0) {
ms = ast_waitfor(chan, ms);
if (ms < 0) {
res = ms;
break;
}
if (ms > 0) {
f = ast_read(chan);
if (!f) {
res = -1;
break;
}
if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Got a ring but still waiting for timeout\n");
}
ast_frfree(f);
}
}
/* Now we're really ready for the ring */
if (!res) {
ms = 99999999;
while(ms > 0) {
ms = ast_waitfor(chan, ms);
if (ms < 0) {
res = ms;
break;
}
if (ms > 0) {
f = ast_read(chan);
if (!f) {
res = -1;
break;
}
if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Got a ring after the timeout\n");
ast_frfree(f);
break;
}
ast_frfree(f);
}
}
}
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
int res;
res = ast_unregister_application(app);
STANDARD_HANGUP_LOCALUSERS;
return res;
}
int load_module(void)
{
return ast_register_application(app, waitforring_exec, synopsis, desc);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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