122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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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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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief App to flash a DAHDI trunk
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \ingroup applications
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*/
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/*** MODULEINFO
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<depend>dahdi</depend>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <dahdi/user.h>
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#include "asterisk/lock.h"
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#include "asterisk/file.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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#include "asterisk/translate.h"
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#include "asterisk/image.h"
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/*** DOCUMENTATION
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<application name="Flash" language="en_US">
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<synopsis>
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Flashes a DAHDI Trunk.
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</synopsis>
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<syntax />
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<description>
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<para>Performs a flash on a DAHDI trunk. This can be used to access features
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provided on an incoming analogue circuit such as conference and call waiting.
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Use with SendDTMF() to perform external transfers.</para>
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</description>
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<see-also>
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<ref type="application">SendDTMF</ref>
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</see-also>
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</application>
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***/
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static char *app = "Flash";
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static inline int dahdi_wait_event(int fd)
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{
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/* Avoid the silly dahdi_waitevent which ignores a bunch of events */
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int i,j=0;
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i = DAHDI_IOMUX_SIGEVENT;
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if (ioctl(fd, DAHDI_IOMUX, &i) == -1) return -1;
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if (ioctl(fd, DAHDI_GETEVENT, &j) == -1) return -1;
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return j;
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}
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static int flash_exec(struct ast_channel *chan, const char *data)
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{
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int res = -1;
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int x;
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struct dahdi_params dahdip;
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if (strcasecmp(chan->tech->type, "DAHDI")) {
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ast_log(LOG_WARNING, "%s is not a DAHDI channel\n", chan->name);
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return -1;
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}
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memset(&dahdip, 0, sizeof(dahdip));
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res = ioctl(chan->fds[0], DAHDI_GET_PARAMS, &dahdip);
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if (!res) {
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if (dahdip.sigtype & __DAHDI_SIG_FXS) {
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x = DAHDI_FLASH;
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res = ioctl(chan->fds[0], DAHDI_HOOK, &x);
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if (!res || (errno == EINPROGRESS)) {
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if (res) {
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/* Wait for the event to finish */
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dahdi_wait_event(chan->fds[0]);
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}
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res = ast_safe_sleep(chan, 1000);
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ast_verb(3, "Flashed channel %s\n", chan->name);
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} else
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ast_log(LOG_WARNING, "Unable to flash channel %s: %s\n", chan->name, strerror(errno));
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} else
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ast_log(LOG_WARNING, "%s is not an FXO Channel\n", chan->name);
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} else
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ast_log(LOG_WARNING, "Unable to get parameters of %s: %s\n", chan->name, strerror(errno));
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return res;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app, flash_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Flash channel application");
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