asterisk/apps/app_flash.c

119 lines
3.1 KiB
C

/*
* 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 App to flash a DAHDI trunk
*
* \author Mark Spencer <markster@digium.com>
*
* \ingroup applications
*/
/*** MODULEINFO
<depend>dahdi</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include <dahdi/user.h>
#include "asterisk/lock.h"
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/image.h"
/*** DOCUMENTATION
<application name="Flash" language="en_US">
<synopsis>
Flashes a DAHDI Trunk.
</synopsis>
<syntax />
<description>
<para>Performs a flash on a DAHDI trunk. This can be used to access features
provided on an incoming analogue circuit such as conference and call waiting.
Use with SendDTMF() to perform external transfers.</para>
</description>
<see-also>
<ref type="application">SendDTMF</ref>
</see-also>
</application>
***/
static char *app = "Flash";
static inline int dahdi_wait_event(int fd)
{
/* Avoid the silly dahdi_waitevent which ignores a bunch of events */
int i,j=0;
i = DAHDI_IOMUX_SIGEVENT;
if (ioctl(fd, DAHDI_IOMUX, &i) == -1) return -1;
if (ioctl(fd, DAHDI_GETEVENT, &j) == -1) return -1;
return j;
}
static int flash_exec(struct ast_channel *chan, const char *data)
{
int res = -1;
int x;
struct dahdi_params dahdip;
if (strcasecmp(ast_channel_tech(chan)->type, "DAHDI")) {
ast_log(LOG_WARNING, "%s is not a DAHDI channel\n", ast_channel_name(chan));
return -1;
}
memset(&dahdip, 0, sizeof(dahdip));
res = ioctl(ast_channel_fd(chan, 0), DAHDI_GET_PARAMS, &dahdip);
if (!res) {
if (dahdip.sigtype & __DAHDI_SIG_FXS) {
x = DAHDI_FLASH;
res = ioctl(ast_channel_fd(chan, 0), DAHDI_HOOK, &x);
if (!res || (errno == EINPROGRESS)) {
if (res) {
/* Wait for the event to finish */
dahdi_wait_event(ast_channel_fd(chan, 0));
}
res = ast_safe_sleep(chan, 1000);
ast_verb(3, "Flashed channel %s\n", ast_channel_name(chan));
} else
ast_log(LOG_WARNING, "Unable to flash channel %s: %s\n", ast_channel_name(chan), strerror(errno));
} else
ast_log(LOG_WARNING, "%s is not an FXO Channel\n", ast_channel_name(chan));
} else
ast_log(LOG_WARNING, "Unable to get parameters of %s: %s\n", ast_channel_name(chan), strerror(errno));
return res;
}
static int unload_module(void)
{
return ast_unregister_application(app);
}
static int load_module(void)
{
return ast_register_application_xml(app, flash_exec);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Flash channel application");