e6b2e9a750
This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes: - CLI command handlers - CLI command handler arguments - AGI command handlers - AGI command handler arguments - Dialplan application handler arguments - Speech engine API function arguments In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing. Review: https://reviewboard.asterisk.org/r/251/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
121 lines
3 KiB
C
121 lines
3 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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***/
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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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