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561 lines
16 KiB
561 lines
16 KiB
#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <libgen.h> /* dirname() */
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#include <asterisk/lock.h>
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#include <asterisk/channel.h>
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#include <asterisk/logger.h>
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#include <asterisk/file.h>
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#include <asterisk/pbx.h>
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#include <asterisk/module.h>
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#include <asterisk/manager.h>
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#include <asterisk/cli.h>
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#include <asterisk/monitor.h>
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#include <asterisk/app.h>
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#include <asterisk/utils.h>
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#include <asterisk/config.h>
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#include "../asterisk.h"
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#include "../astconf.h"
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#define AST_MONITOR_DIR AST_SPOOL_DIR "/monitor"
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AST_MUTEX_DEFINE_STATIC(monitorlock);
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static unsigned long seq = 0;
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static char *monitor_synopsis = "Monitor a channel";
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static char *monitor_descrip = "Monitor([file_format[:urlbase]|[fname_base]|[options]]):\n"
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"Used to start monitoring a channel. The channel's input and output\n"
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"voice packets are logged to files until the channel hangs up or\n"
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"monitoring is stopped by the StopMonitor application.\n"
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" file_format optional, if not set, defaults to \"wav\"\n"
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" fname_base if set, changes the filename used to the one specified.\n"
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" options:\n"
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" m - when the recording ends mix the two leg files into one and\n"
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" delete the two leg files. If the variable MONITOR_EXEC is set, the\n"
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" application referenced in it will be executed instead of\n"
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" soxmix and the raw leg files will NOT be deleted automatically.\n"
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" soxmix or MONITOR_EXEC is handed 3 arguments, the two leg files\n"
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" and a target mixed file name which is the same as the leg file names\n"
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" only without the in/out designator.\n"
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" If MONITOR_EXEC_ARGS is set, the contents will be passed on as\n"
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" additional arguements to MONITOR_EXEC\n"
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" Both MONITOR_EXEC and the Mix flag can be set from the\n"
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" administrator interface\n"
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"\n"
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" b - Don't begin recording unless a call is bridged to another channel\n"
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"\nReturns -1 if monitor files can't be opened or if the channel is already\n"
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"monitored, otherwise 0.\n"
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;
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static char *stopmonitor_synopsis = "Stop monitoring a channel";
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static char *stopmonitor_descrip = "StopMonitor\n"
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"Stops monitoring a channel. Has no effect if the channel is not monitored\n";
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static char *changemonitor_synopsis = "Change monitoring filename of a channel";
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static char *changemonitor_descrip = "ChangeMonitor(filename_base)\n"
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"Changes monitoring filename of a channel. Has no effect if the channel is not monitored\n"
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"The argument is the new filename base to use for monitoring this channel.\n";
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/* Start monitoring a channel */
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int ast_monitor_start( struct ast_channel *chan, const char *format_spec,
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const char *fname_base, int need_lock)
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{
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int res = 0;
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char tmp[256];
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if (need_lock) {
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if (ast_mutex_lock(&chan->lock)) {
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ast_log(LOG_WARNING, "Unable to lock channel\n");
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return -1;
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}
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}
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if (!(chan->monitor)) {
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struct ast_channel_monitor *monitor;
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char *channel_name, *p;
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/* Create monitoring directory if needed */
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if (mkdir(AST_MONITOR_DIR, 0770) < 0) {
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if (errno != EEXIST) {
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ast_log(LOG_WARNING, "Unable to create audio monitor directory: %s\n",
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strerror(errno));
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}
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}
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monitor = malloc(sizeof(struct ast_channel_monitor));
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if (!monitor) {
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if (need_lock)
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ast_mutex_unlock(&chan->lock);
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return -1;
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}
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memset(monitor, 0, sizeof(struct ast_channel_monitor));
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/* Determine file names */
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if (fname_base && !ast_strlen_zero(fname_base)) {
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int directory = strchr(fname_base, '/') ? 1 : 0;
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/* try creating the directory just in case it doesn't exist */
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if (directory) {
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char *name = strdup(fname_base);
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snprintf(tmp, sizeof(tmp), "mkdir -p \"%s\"",dirname(name));
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free(name);
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ast_safe_system(tmp);
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}
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snprintf(monitor->read_filename, FILENAME_MAX, "%s/%s-in",
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directory ? "" : AST_MONITOR_DIR, fname_base);
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snprintf(monitor->write_filename, FILENAME_MAX, "%s/%s-out",
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directory ? "" : AST_MONITOR_DIR, fname_base);
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strncpy(monitor->filename_base, fname_base, sizeof(monitor->filename_base) - 1);
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} else {
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ast_mutex_lock(&monitorlock);
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snprintf(monitor->read_filename, FILENAME_MAX, "%s/audio-in-%ld",
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AST_MONITOR_DIR, seq);
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snprintf(monitor->write_filename, FILENAME_MAX, "%s/audio-out-%ld",
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AST_MONITOR_DIR, seq);
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seq++;
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ast_mutex_unlock(&monitorlock);
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channel_name = strdup(chan->name);
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while((p = strchr(channel_name, '/'))) {
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*p = '-';
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}
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snprintf(monitor->filename_base, FILENAME_MAX, "%s/%s",
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AST_MONITOR_DIR, channel_name);
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monitor->filename_changed = 1;
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free(channel_name);
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}
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monitor->stop = ast_monitor_stop;
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/* Determine file format */
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if (format_spec && !ast_strlen_zero(format_spec)) {
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monitor->format = strdup(format_spec);
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} else {
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monitor->format = strdup("wav");
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}
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/* open files */
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if (ast_fileexists(monitor->read_filename, NULL, NULL) > 0) {
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ast_filedelete(monitor->read_filename, NULL);
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}
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if (!(monitor->read_stream = ast_writefile(monitor->read_filename,
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monitor->format, NULL,
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O_CREAT|O_TRUNC|O_WRONLY, 0, 0644))) {
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ast_log(LOG_WARNING, "Could not create file %s\n",
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monitor->read_filename);
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free(monitor);
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ast_mutex_unlock(&chan->lock);
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return -1;
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}
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if (ast_fileexists(monitor->write_filename, NULL, NULL) > 0) {
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ast_filedelete(monitor->write_filename, NULL);
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}
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if (!(monitor->write_stream = ast_writefile(monitor->write_filename,
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monitor->format, NULL,
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O_CREAT|O_TRUNC|O_WRONLY, 0, 0644))) {
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ast_log(LOG_WARNING, "Could not create file %s\n",
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monitor->write_filename);
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ast_closestream(monitor->read_stream);
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free(monitor);
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ast_mutex_unlock(&chan->lock);
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return -1;
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}
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chan->monitor = monitor;
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} else {
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ast_log(LOG_DEBUG,"Cannot start monitoring %s, already monitored\n",
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chan->name);
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res = -1;
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}
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if (need_lock) {
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ast_mutex_unlock(&chan->lock);
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}
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return res;
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}
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/* Stop monitoring a channel */
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int ast_monitor_stop(struct ast_channel *chan, int need_lock)
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{
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char *execute, *execute_args;
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int delfiles = 0;
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if (need_lock) {
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if (ast_mutex_lock(&chan->lock)) {
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ast_log(LOG_WARNING, "Unable to lock channel\n");
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return -1;
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}
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}
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if (chan->monitor) {
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char filename[ FILENAME_MAX ];
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if (chan->monitor->read_stream) {
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ast_closestream(chan->monitor->read_stream);
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}
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if (chan->monitor->write_stream) {
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ast_closestream(chan->monitor->write_stream);
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}
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if (chan->monitor->filename_changed && !ast_strlen_zero(chan->monitor->filename_base)) {
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if (ast_fileexists(chan->monitor->read_filename,NULL,NULL) > 0) {
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snprintf(filename, FILENAME_MAX, "%s-in", chan->monitor->filename_base);
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if (ast_fileexists(filename, NULL, NULL) > 0) {
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ast_filedelete(filename, NULL);
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}
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ast_filerename(chan->monitor->read_filename, filename, chan->monitor->format);
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} else {
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ast_log(LOG_WARNING, "File %s not found\n", chan->monitor->read_filename);
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}
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if (ast_fileexists(chan->monitor->write_filename,NULL,NULL) > 0) {
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snprintf(filename, FILENAME_MAX, "%s-out", chan->monitor->filename_base);
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if (ast_fileexists(filename, NULL, NULL) > 0) {
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ast_filedelete(filename, NULL);
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}
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ast_filerename(chan->monitor->write_filename, filename, chan->monitor->format);
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} else {
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ast_log(LOG_WARNING, "File %s not found\n", chan->monitor->write_filename);
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}
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}
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if (chan->monitor->joinfiles && !ast_strlen_zero(chan->monitor->filename_base)) {
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char tmp[1024];
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char tmp2[1024];
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char *format = !strcasecmp(chan->monitor->format,"wav49") ? "WAV" : chan->monitor->format;
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char *name = chan->monitor->filename_base;
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int directory = strchr(name, '/') ? 1 : 0;
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char *dir = directory ? "" : AST_MONITOR_DIR;
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/* Set the execute application */
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execute = pbx_builtin_getvar_helper(chan, "MONITOR_EXEC");
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if (!execute || ast_strlen_zero(execute)) {
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execute = "nice -n 19 soxmix";
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delfiles = 1;
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}
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execute_args = pbx_builtin_getvar_helper(chan, "MONITOR_EXEC_ARGS");
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if (!execute_args || ast_strlen_zero(execute_args)) {
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execute_args = "";
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}
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snprintf(tmp, sizeof(tmp), "%s \"%s/%s-in.%s\" \"%s/%s-out.%s\" \"%s/%s.%s\" %s &", execute, dir, name, format, dir, name, format, dir, name, format,execute_args);
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if (delfiles) {
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snprintf(tmp2,sizeof(tmp2), "( %s& rm -f \"%s\"/%s-* ) &",tmp, dir ,name); /* remove legs when done mixing */
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strncpy(tmp, tmp2, sizeof(tmp) - 1);
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}
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ast_verbose("monitor executing %s\n",tmp);
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if (ast_safe_system(tmp) == -1)
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ast_log(LOG_WARNING, "Execute of %s failed.\n",tmp);
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}
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free(chan->monitor->format);
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free(chan->monitor);
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chan->monitor = NULL;
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}
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if (need_lock)
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ast_mutex_unlock(&chan->lock);
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return 0;
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}
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/* Change monitoring filename of a channel */
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int ast_monitor_change_fname(struct ast_channel *chan, const char *fname_base, int need_lock)
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{
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char tmp[256];
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if ((!fname_base) || (ast_strlen_zero(fname_base))) {
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ast_log(LOG_WARNING, "Cannot change monitor filename of channel %s to null", chan->name);
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return -1;
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}
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if (need_lock) {
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if (ast_mutex_lock(&chan->lock)) {
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ast_log(LOG_WARNING, "Unable to lock channel\n");
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return -1;
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}
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}
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if (chan->monitor) {
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int directory = strchr(fname_base, '/') ? 1 : 0;
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/* try creating the directory just in case it doesn't exist */
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if (directory) {
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char *name = strdup(fname_base);
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snprintf(tmp, sizeof(tmp), "mkdir -p %s",dirname(name));
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free(name);
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ast_safe_system(tmp);
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}
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snprintf(chan->monitor->filename_base, FILENAME_MAX, "%s/%s", directory ? "" : AST_MONITOR_DIR, fname_base);
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} else {
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ast_log(LOG_WARNING, "Cannot change monitor filename of channel %s to %s, monitoring not started", chan->name, fname_base);
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}
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if (need_lock)
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ast_mutex_unlock(&chan->lock);
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return 0;
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}
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static int start_monitor_exec(struct ast_channel *chan, void *data)
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{
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char *arg = NULL;
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char *format = NULL;
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char *fname_base = NULL;
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char *options = NULL;
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char *delay = NULL;
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char *urlprefix = NULL;
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char tmp[256];
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int joinfiles = 0;
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int waitforbridge = 0;
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int res = 0;
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/* Parse arguments. */
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if (data && !ast_strlen_zero((char*)data)) {
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arg = ast_strdupa((char*)data);
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format = arg;
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arg = strchr(format,':');
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if (arg)
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{
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*arg++ = 0;
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urlprefix = arg;
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}
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else arg = format;
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fname_base = strchr(arg, '|');
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if (fname_base) {
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*fname_base = 0;
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fname_base++;
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if ((options = strchr(fname_base, '|'))) {
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*options = 0;
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options++;
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if (strchr(options, 'm'))
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joinfiles = 1;
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if (strchr(options, 'b'))
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waitforbridge = 1;
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}
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}
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}
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if (urlprefix)
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{
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snprintf(tmp,sizeof(tmp) - 1,"%s/%s.%s",urlprefix,fname_base,
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((strcmp(format,"gsm")) ? "wav" : "gsm"));
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if (!chan->cdr)
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chan->cdr = ast_cdr_alloc();
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ast_cdr_setuserfield(chan, tmp);
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}
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if (waitforbridge) {
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/* We must remove the "b" option if listed. In principle none of
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the following could give NULL results, but we check just to
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be pedantic. Reconstructing with checks for 'm' option does not
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work if we end up adding more options than 'm' in the future. */
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delay = ast_strdupa((char*)data);
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if (delay) {
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options = strrchr(delay, '|');
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if (options) {
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arg = strchr(options, 'b');
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if (arg) {
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*arg = 'X';
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pbx_builtin_setvar_helper(chan,"AUTO_MONITOR",delay);
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}
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}
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}
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return 0;
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}
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res = ast_monitor_start(chan, format, fname_base, 1);
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if (res < 0)
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res = ast_monitor_change_fname(chan, fname_base, 1);
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ast_monitor_setjoinfiles(chan, joinfiles);
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return res;
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}
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static int stop_monitor_exec(struct ast_channel *chan, void *data)
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{
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return ast_monitor_stop(chan, 1);
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}
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static int change_monitor_exec(struct ast_channel *chan, void *data)
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{
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return ast_monitor_change_fname(chan, (const char*)data, 1);
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}
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static int start_monitor_action(struct mansession *s, struct message *m)
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{
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struct ast_channel *c = NULL;
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char *name = astman_get_header(m, "Channel");
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char *fname = astman_get_header(m, "File");
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char *format = astman_get_header(m, "Format");
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char *mix = astman_get_header(m, "Mix");
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char *d;
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if ((!name) || (ast_strlen_zero(name))) {
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astman_send_error(s, m, "No channel specified");
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return 0;
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}
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c = ast_channel_walk_locked(NULL);
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while (c) {
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if (!strcasecmp(c->name, name)) {
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break;
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}
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ast_mutex_unlock(&c->lock);
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c = ast_channel_walk_locked(c);
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}
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if (!c) {
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astman_send_error(s, m, "No such channel");
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return 0;
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}
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if ((!fname) || (ast_strlen_zero(fname))) {
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/* No filename base specified, default to channel name as per CLI */
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fname = malloc (FILENAME_MAX);
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if (!fname) {
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astman_send_error(s, m, "Could not start monitoring channel");
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ast_mutex_unlock(&c->lock);
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return 0;
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}
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memset(fname, 0, FILENAME_MAX);
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strncpy(fname, c->name, FILENAME_MAX-1);
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/* Channels have the format technology/channel_name - have to replace that / */
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if ((d=strchr(fname, '/'))) *d='-';
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}
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if (ast_monitor_start(c, format, fname, 1)) {
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if (ast_monitor_change_fname(c, fname, 1)) {
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astman_send_error(s, m, "Could not start monitoring channel");
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ast_mutex_unlock(&c->lock);
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return 0;
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}
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}
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if (ast_true(mix)) {
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ast_monitor_setjoinfiles(c, 1);
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}
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ast_mutex_unlock(&c->lock);
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astman_send_ack(s, m, "Started monitoring channel");
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return 0;
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}
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static int stop_monitor_action(struct mansession *s, struct message *m)
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{
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struct ast_channel *c = NULL;
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char *name = astman_get_header(m, "Channel");
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int res;
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if ((!name) || (ast_strlen_zero(name))) {
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astman_send_error(s, m, "No channel specified");
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return 0;
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}
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c = ast_channel_walk_locked(NULL);
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while(c) {
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if (!strcasecmp(c->name, name)) {
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break;
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}
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ast_mutex_unlock(&c->lock);
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c = ast_channel_walk_locked(c);
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}
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if (!c) {
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astman_send_error(s, m, "No such channel");
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return 0;
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}
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res = ast_monitor_stop(c, 1);
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ast_mutex_unlock(&c->lock);
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if (res) {
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astman_send_error(s, m, "Could not stop monitoring channel");
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return 0;
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}
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astman_send_ack(s, m, "Stopped monitoring channel");
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return 0;
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}
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static int change_monitor_action(struct mansession *s, struct message *m)
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{
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struct ast_channel *c = NULL;
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char *name = astman_get_header(m, "Channel");
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char *fname = astman_get_header(m, "File");
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if ((!name) || (ast_strlen_zero(name))) {
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astman_send_error(s, m, "No channel specified");
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return 0;
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}
|
|
if ((!fname)||(ast_strlen_zero(fname))) {
|
|
astman_send_error(s, m, "No filename specified");
|
|
return 0;
|
|
}
|
|
c = ast_channel_walk_locked(NULL);
|
|
while(c) {
|
|
if (!strcasecmp(c->name, name)) {
|
|
break;
|
|
}
|
|
ast_mutex_unlock(&c->lock);
|
|
c = ast_channel_walk_locked(c);
|
|
}
|
|
if (!c) {
|
|
astman_send_error(s, m, "No such channel");
|
|
return 0;
|
|
}
|
|
if (ast_monitor_change_fname(c, fname, 1)) {
|
|
astman_send_error(s, m, "Could not change monitored filename of channel");
|
|
ast_mutex_unlock(&c->lock);
|
|
return 0;
|
|
}
|
|
ast_mutex_unlock(&c->lock);
|
|
astman_send_ack(s, m, "Stopped monitoring channel");
|
|
return 0;
|
|
}
|
|
|
|
void ast_monitor_setjoinfiles(struct ast_channel *chan, int turnon)
|
|
{
|
|
if (chan->monitor)
|
|
chan->monitor->joinfiles = turnon;
|
|
}
|
|
|
|
int load_module(void)
|
|
{
|
|
ast_register_application("Monitor", start_monitor_exec, monitor_synopsis, monitor_descrip);
|
|
ast_register_application("StopMonitor", stop_monitor_exec, stopmonitor_synopsis, stopmonitor_descrip);
|
|
ast_register_application("ChangeMonitor", change_monitor_exec, changemonitor_synopsis, changemonitor_descrip);
|
|
ast_manager_register("Monitor", EVENT_FLAG_CALL, start_monitor_action, monitor_synopsis);
|
|
ast_manager_register("StopMonitor", EVENT_FLAG_CALL, stop_monitor_action, stopmonitor_synopsis);
|
|
ast_manager_register("ChangeMonitor", EVENT_FLAG_CALL, change_monitor_action, changemonitor_synopsis);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int unload_module(void)
|
|
{
|
|
ast_unregister_application("Monitor");
|
|
ast_unregister_application("StopMonitor");
|
|
ast_unregister_application("ChangeMonitor");
|
|
ast_manager_unregister("Monitor");
|
|
ast_manager_unregister("StopMonitor");
|
|
ast_manager_unregister("ChangeMonitor");
|
|
return 0;
|
|
}
|
|
|
|
char *description(void)
|
|
{
|
|
return "Call Monitoring Resource";
|
|
}
|
|
|
|
int usecount(void)
|
|
{
|
|
/* Never allow monitor to be unloaded because it will
|
|
unresolve needed symbols in the channel */
|
|
#if 0
|
|
int res;
|
|
STANDARD_USECOUNT(res);
|
|
return res;
|
|
#else
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|