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app_dahdiras: Remove deprecated module.
ASTERISK-29591 Change-Id: I021d37b729631d40f84e35bb21e2893777be1858
This commit is contained in:
Joshua C. Colp
@@ -1,233 +0,0 @@
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/*
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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 Execute an ISDN RAS
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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>deprecated</support_level>
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<deprecated_in>16</deprecated_in>
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<removed_in>19</removed_in>
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***/
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#include "asterisk.h"
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#include <sys/ioctl.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <fcntl.h>
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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/app.h"
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/*** DOCUMENTATION
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<application name="DAHDIRAS" language="en_US">
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<synopsis>
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Executes DAHDI ISDN RAS application.
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</synopsis>
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<syntax>
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<parameter name="args" required="true">
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<para>A list of parameters to pass to the pppd daemon,
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separated by <literal>,</literal> characters.</para>
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</parameter>
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</syntax>
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<description>
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<para>Executes a RAS server using pppd on the given channel.
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The channel must be a clear channel (i.e. PRI source) and a DAHDI
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channel to be able to use this function (No modem emulation is included).</para>
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<para>Your pppd must be patched to be DAHDI aware.</para>
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</description>
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</application>
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***/
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static const char app[] = "DAHDIRAS";
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#define PPP_MAX_ARGS 32
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#define PPP_EXEC "/usr/sbin/pppd"
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static pid_t spawn_ras(struct ast_channel *chan, char *args)
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{
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pid_t pid;
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char *c;
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char *argv[PPP_MAX_ARGS];
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int argc = 0;
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char *stringp=NULL;
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/* Start by forking */
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pid = ast_safe_fork(1);
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if (pid) {
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return pid;
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}
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/* Execute RAS on File handles */
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dup2(ast_channel_fd(chan, 0), STDIN_FILENO);
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/* Drop high priority */
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if (ast_opt_high_priority)
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ast_set_priority(0);
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/* Close other file descriptors */
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ast_close_fds_above_n(STDERR_FILENO);
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/* Reset all arguments */
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memset(argv, 0, sizeof(argv));
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/* First argument is executable, followed by standard
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arguments for DAHDI PPP */
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argv[argc++] = PPP_EXEC;
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argv[argc++] = "nodetach";
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/* And all the other arguments */
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stringp=args;
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c = strsep(&stringp, ",");
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while(c && strlen(c) && (argc < (PPP_MAX_ARGS - 4))) {
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argv[argc++] = c;
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c = strsep(&stringp, ",");
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}
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if (geteuid() == 0) {
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argv[argc++] = "plugin";
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argv[argc++] = "dahdi.so";
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}
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argv[argc++] = "stdin";
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/* Finally launch PPP */
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execv(PPP_EXEC, argv);
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fprintf(stderr, "Failed to exec PPPD!\n");
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exit(1);
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}
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static void run_ras(struct ast_channel *chan, char *args)
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{
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pid_t pid;
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int status;
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int res;
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int signalled = 0;
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struct dahdi_bufferinfo savebi;
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int x;
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res = ioctl(ast_channel_fd(chan, 0), DAHDI_GET_BUFINFO, &savebi);
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if(res) {
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ast_log(LOG_WARNING, "Unable to check buffer policy on channel %s\n", ast_channel_name(chan));
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return;
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}
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pid = spawn_ras(chan, args);
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if (pid < 0) {
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ast_log(LOG_WARNING, "Failed to spawn RAS\n");
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} else {
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for (;;) {
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res = waitpid(pid, &status, WNOHANG);
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if (!res) {
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/* Check for hangup */
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if (ast_check_hangup(chan) && !signalled) {
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ast_debug(1, "Channel '%s' hungup. Signalling RAS at %d to die...\n", ast_channel_name(chan), pid);
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kill(pid, SIGTERM);
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signalled=1;
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}
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/* Try again */
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sleep(1);
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continue;
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}
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if (res < 0) {
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ast_log(LOG_WARNING, "waitpid returned %d: %s\n", res, strerror(errno));
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}
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if (WIFEXITED(status)) {
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ast_verb(3, "RAS on %s terminated with status %d\n", ast_channel_name(chan), WEXITSTATUS(status));
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} else if (WIFSIGNALED(status)) {
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ast_verb(3, "RAS on %s terminated with signal %d\n",
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ast_channel_name(chan), WTERMSIG(status));
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} else {
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ast_verb(3, "RAS on %s terminated weirdly.\n", ast_channel_name(chan));
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}
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/* Throw back into audio mode */
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x = 1;
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ioctl(ast_channel_fd(chan, 0), DAHDI_AUDIOMODE, &x);
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/* Restore saved values */
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res = ioctl(ast_channel_fd(chan, 0), DAHDI_SET_BUFINFO, &savebi);
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if (res < 0) {
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ast_log(LOG_WARNING, "Unable to set buffer policy on channel %s\n", ast_channel_name(chan));
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}
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break;
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}
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}
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ast_safe_fork_cleanup();
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}
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static int dahdiras_exec(struct ast_channel *chan, const char *data)
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{
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int res=-1;
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char *args;
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struct dahdi_params dahdip;
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if (!data)
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data = "";
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args = ast_strdupa(data);
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/* Answer the channel if it's not up */
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if (ast_channel_state(chan) != AST_STATE_UP)
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ast_answer(chan);
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if (strcasecmp(ast_channel_tech(chan)->type, "DAHDI")) {
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/* If it's not a DAHDI channel, we're done. Wait a couple of
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seconds and then hangup... */
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ast_verb(2, "Channel %s is not a DAHDI channel\n", ast_channel_name(chan));
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sleep(2);
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} else {
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memset(&dahdip, 0, sizeof(dahdip));
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if (ioctl(ast_channel_fd(chan, 0), DAHDI_GET_PARAMS, &dahdip)) {
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ast_log(LOG_WARNING, "Unable to get DAHDI parameters\n");
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} else if (dahdip.sigtype != DAHDI_SIG_CLEAR) {
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ast_verb(2, "Channel %s is not a clear channel\n", ast_channel_name(chan));
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} else {
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/* Everything should be okay. Run PPP. */
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ast_verb(3, "Starting RAS on %s\n", ast_channel_name(chan));
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/* Execute RAS */
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run_ras(chan, args);
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}
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}
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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, dahdiras_exec)) ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS);
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}
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AST_MODULE_INFO_STANDARD_DEPRECATED(ASTERISK_GPL_KEY, "DAHDI ISDN Remote Access Server");
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6
doc/UPGRADE-staging/app_dahdiras_removal.txt
Normal file
6
doc/UPGRADE-staging/app_dahdiras_removal.txt
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@@ -0,0 +1,6 @@
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Subject: app_dahdiras
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Master-Only: True
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This module was deprecated in Asterisk 16
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and is now being removed in accordance with
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the Asterisk Module Deprecation policy.
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