--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#include <asterisk/lock.h>
+#include <asterisk/channel.h>
+#include <asterisk/logger.h>
+#include <asterisk/file.h>
+#include <asterisk/pbx.h>
+#include <asterisk/module.h>
+#include <asterisk/manager.h>
+#include <asterisk/cli.h>
+#include <asterisk/monitor.h>
+
+#define AST_MONITOR_DIR INSTALL_PREFIX "/var/spool/asterisk/monitor"
+
+static pthread_mutex_t monitorlock = AST_MUTEX_INITIALIZER;
+
+static unsigned long seq = 0;
+
+static char *monitor_synopsis = "Monitor a channel";
+
+static char *monitor_descrip = "Monitor\n"
+ "Used to start monitoring a channel. The channel's input and output\n"
+ "voice packets are logged to files until the channel hangs up or\n"
+ "monitoring is stopped by the StopMonitor application.\n"
+ "The option string may contain the following arguments: [file_format|[fname_base]]\n"
+ " file_format -- optional, if not set, defaults to \"wav\"\n"
+ " fname_base -- if set, changes the filename used to the one specified.\n";
+
+static char *stopmonitor_synopsis = "Stop monitoring a channel";
+
+static char *stopmonitor_descrip = "StopMonitor\n"
+ "Stops monitoring a channel. Has no effect if the channel is not monitored\n";
+
+static char *changemonitor_synopsis = "Change monitoring filename of a channel";
+
+static char *changemonitor_descrip = "ChangeMonitor\n"
+ "Changes monitoring filename of a channel. Has no effect if the channel is not monitored\n"
+ "The option string may contain the following:\n"
+ " filename_base -- if set, changes the filename used to the one specified.\n";
+
+/* Start monitoring a channel */
+int ast_monitor_start( struct ast_channel *chan, const char *format_spec,
+ const char *fname_base, int need_lock )
+{
+ int res = 0;
+
+ if( need_lock ) {
+ if (ast_pthread_mutex_lock(&chan->lock)) {
+ ast_log(LOG_WARNING, "Unable to lock channel\n");
+ return -1;
+ }
+ }
+
+ if( !(chan->monitor) ) {
+ struct ast_channel_monitor *monitor;
+ char *channel_name, *p;
+
+ /* Create monitoring directory if needed */
+ if( mkdir( AST_MONITOR_DIR, 0770 ) < 0 ) {
+ if( errno != EEXIST ) {
+ ast_log(LOG_WARNING, "Unable to create audio monitor directory: %s\n",
+ strerror( errno ) );
+ }
+ }
+
+ monitor = malloc( sizeof( struct ast_channel_monitor ) );
+ memset( monitor, 0, sizeof( struct ast_channel_monitor ) );
+
+ /* Determine file names */
+ if( fname_base && strlen( fname_base ) ) {
+ snprintf( monitor->read_filename, FILENAME_MAX, "%s/%s-in",
+ AST_MONITOR_DIR, fname_base );
+ snprintf( monitor->write_filename, FILENAME_MAX, "%s/%s-out",
+ AST_MONITOR_DIR, fname_base );
+ *monitor->filename_base = 0;
+ } else {
+ ast_pthread_mutex_lock( &monitorlock );
+ snprintf( monitor->read_filename, FILENAME_MAX, "%s/audio-in-%ld",
+ AST_MONITOR_DIR, seq );
+ snprintf( monitor->write_filename, FILENAME_MAX, "%s/audio-out-%ld",
+ AST_MONITOR_DIR, seq );
+ seq++;
+ ast_pthread_mutex_unlock( &monitorlock );
+
+ channel_name = strdup( chan->name );
+ while( ( p = strchr( channel_name, '/' ) ) ) {
+ *p = '-';
+ }
+ snprintf( monitor->filename_base, FILENAME_MAX, "%s/%s",
+ AST_MONITOR_DIR, channel_name );
+ free( channel_name );
+ }
+
+ monitor->stop = ast_monitor_stop;
+
+ // Determine file format
+ if( format_spec && strlen( format_spec ) ) {
+ monitor->format = strdup( format_spec );
+ } else {
+ monitor->format = strdup( "wav" );
+ }
+
+ // open files
+ if( ast_fileexists( monitor->read_filename, NULL, NULL ) > 0 ) {
+ ast_filedelete( monitor->read_filename, NULL );
+ }
+ if( !(monitor->read_stream = ast_writefile( monitor->read_filename,
+ monitor->format, NULL,
+ O_CREAT|O_TRUNC|O_WRONLY, 0, 0644 ) ) ) {
+ ast_log( LOG_WARNING, "Could not create file %s\n",
+ monitor->read_filename );
+ free( monitor );
+ ast_pthread_mutex_unlock(&chan->lock);
+ return -1;
+ }
+ if( ast_fileexists( monitor->write_filename, NULL, NULL ) > 0 ) {
+ ast_filedelete( monitor->write_filename, NULL );
+ }
+ if( !(monitor->write_stream = ast_writefile( monitor->write_filename,
+ monitor->format, NULL,
+ O_CREAT|O_TRUNC|O_WRONLY, 0, 0644 ) ) ) {
+ ast_log( LOG_WARNING, "Could not create file %s\n",
+ monitor->write_filename );
+ ast_closestream( monitor->read_stream );
+ free( monitor );
+ ast_pthread_mutex_unlock(&chan->lock);
+ return -1;
+ }
+ chan->monitor = monitor;
+ } else {
+ ast_log( LOG_DEBUG,"Cannot start monitoring %s, already monitored\n",
+ chan->name );
+ res = -1;
+ }
+
+ if( need_lock ) {
+ ast_pthread_mutex_unlock(&chan->lock);
+ }
+ return res;
+}
+
+/* Stop monitoring a channel */
+int ast_monitor_stop( struct ast_channel *chan, int need_lock )
+{
+ if(need_lock) {
+ if(ast_pthread_mutex_lock(&chan->lock)) {
+ ast_log(LOG_WARNING, "Unable to lock channel\n");
+ return -1;
+ }
+ }
+
+ if(chan->monitor) {
+ char filename[ FILENAME_MAX ];
+
+ if(chan->monitor->read_stream) {
+ ast_closestream( chan->monitor->read_stream );
+ }
+ if(chan->monitor->write_stream) {
+ ast_closestream( chan->monitor->write_stream );
+ }
+
+ if(chan->monitor->filename_base&&strlen(chan->monitor->filename_base)) {
+ if( ast_fileexists(chan->monitor->read_filename,NULL,NULL) > 0 ) {
+ snprintf( filename, FILENAME_MAX, "%s-in",
+ chan->monitor->filename_base );
+ if(ast_fileexists( filename, NULL, NULL ) > 0) {
+ ast_filedelete( filename, NULL );
+ }
+ ast_filerename( chan->monitor->read_filename, filename,
+ chan->monitor->format );
+ } else {
+ ast_log( LOG_WARNING, "File %s not found\n",
+ chan->monitor->read_filename );
+ }
+
+ if(ast_fileexists(chan->monitor->write_filename,NULL,NULL) > 0) {
+ snprintf( filename, FILENAME_MAX, "%s-out",
+ chan->monitor->filename_base );
+ if( ast_fileexists( filename, NULL, NULL ) > 0 ) {
+ ast_filedelete( filename, NULL );
+ }
+ ast_filerename( chan->monitor->write_filename, filename,
+ chan->monitor->format );
+ } else {
+ ast_log( LOG_WARNING, "File %s not found\n",
+ chan->monitor->write_filename );
+ }
+ }
+
+ free( chan->monitor->format );
+ free( chan->monitor );
+ chan->monitor = NULL;
+ }
+
+ if( need_lock ) {
+ ast_pthread_mutex_unlock(&chan->lock);
+ }
+ return 0;
+}
+
+/* Change monitoring filename of a channel */
+int ast_monitor_change_fname( struct ast_channel *chan,
+ const char *fname_base, int need_lock )
+{
+ if( (!fname_base) || (!strlen(fname_base)) ) {
+ ast_log( LOG_WARNING,
+ "Cannot change monitor filename of channel %s to null",
+ chan->name );
+ return -1;
+ }
+
+ if( need_lock ) {
+ if (ast_pthread_mutex_lock(&chan->lock)) {
+ ast_log(LOG_WARNING, "Unable to lock channel\n");
+ return -1;
+ }
+ }
+
+ if( chan->monitor ) {
+ snprintf( chan->monitor->filename_base, FILENAME_MAX, "%s/%s",
+ AST_MONITOR_DIR, fname_base );
+ } else {
+ ast_log( LOG_WARNING,
+ "Cannot change monitor filename of channel %s to %s, monitoring not started",
+ chan->name, fname_base );
+
+ }
+
+ if( need_lock ) {
+ ast_pthread_mutex_unlock(&chan->lock);
+ }
+ return 0;
+}
+
+static int start_monitor_exec(struct ast_channel *chan, void *data)
+{
+ char *arg = NULL;
+ char *format = NULL;
+ char *fname_base = NULL;
+ int res;
+
+ /* Parse arguments. */
+ if( data && strlen((char*)data) ) {
+ arg = strdup( (char*)data );
+ format = arg;
+ fname_base = strchr( arg, '|' );
+ if( fname_base ) {
+ *fname_base = 0;
+ fname_base++;
+ }
+ }
+
+ res = ast_monitor_start( chan, format, fname_base, 1 );
+ if( res < 0 ) {
+ res = ast_monitor_change_fname( chan, fname_base, 1 );
+ }
+
+ if( arg ) {
+ free( arg );
+ }
+
+ return res;
+}
+
+static int stop_monitor_exec(struct ast_channel *chan, void *data)
+{
+ return ast_monitor_stop( chan, 1 );
+}
+
+static int change_monitor_exec(struct ast_channel *chan, void *data)
+{
+ return ast_monitor_change_fname( chan, (const char*)data, 1 );
+}
+
+static char *get_header(struct message *m, char *var)
+{
+ char cmp[80];
+ int x;
+ snprintf(cmp, sizeof(cmp), "%s: ", var);
+ for (x=0;x<m->hdrcount;x++)
+ if (!strncasecmp(cmp, m->headers[x], strlen(cmp)))
+ return m->headers[x] + strlen(cmp);
+ return NULL;
+}
+
+static void send_error(struct mansession *s, char *error)
+{
+ ast_pthread_mutex_lock(&s->lock);
+ ast_cli(s->fd, "Response: Error\r\n");
+ ast_cli(s->fd, "Message: %s\r\n\r\n", error);
+ ast_pthread_mutex_unlock(&s->lock);
+}
+
+static void send_response(struct mansession *s, char *resp, char *msg)
+{
+ ast_pthread_mutex_lock(&s->lock);
+ ast_cli(s->fd, "Response: %s\r\n", resp);
+ if (msg)
+ ast_cli(s->fd, "Message: %s\r\n\r\n", msg);
+ else
+ ast_cli(s->fd, "\r\n");
+ ast_pthread_mutex_unlock(&s->lock);
+}
+
+static void send_ack(struct mansession *s, char *msg)
+{
+ send_response(s, "Success", msg);
+}
+
+static int start_monitor_action(struct mansession *s, struct message *m)
+{
+ struct ast_channel *c = NULL;
+ char *name = get_header(m, "Channel");
+ char *fname = get_header(m, "File");
+ char *format = get_header(m, "Format");
+ if((!name)||(!strlen(name))) {
+ send_error(s, "No channel specified");
+ return 0;
+ }
+ c = ast_channel_walk(NULL);
+ while(c) {
+ if (!strcasecmp(c->name, name)) {
+ break;
+ }
+ c = ast_channel_walk(c);
+ }
+ if (!c) {
+ send_error(s, "No such channel");
+ return 0;
+ }
+ if( ast_monitor_start( c, format, fname, 1 ) ) {
+ if( ast_monitor_change_fname( c, fname, 1 ) ) {
+ send_error(s, "Could not start monitoring channel");
+ return 0;
+ }
+ }
+ send_ack(s, "Started monitoring channel");
+ return 0;
+}
+
+static int stop_monitor_action(struct mansession *s, struct message *m)
+{
+ struct ast_channel *c = NULL;
+ char *name = get_header(m, "Channel");
+ if((!name)||(!strlen(name))) {
+ send_error(s, "No channel specified");
+ return 0;
+ }
+ c = ast_channel_walk(NULL);
+ while(c) {
+ if (!strcasecmp(c->name, name)) {
+ break;
+ }
+ c = ast_channel_walk(c);
+ }
+ if (!c) {
+ send_error(s, "No such channel");
+ return 0;
+ }
+ if( ast_monitor_stop( c, 1 ) ) {
+ send_error(s, "Could not stop monitoring channel");
+ return 0;
+ }
+ send_ack(s, "Stopped monitoring channel");
+ return 0;
+}
+
+static int change_monitor_action(struct mansession *s, struct message *m)
+{
+ struct ast_channel *c = NULL;
+ char *name = get_header(m, "Channel");
+ char *fname = get_header(m, "File");
+ if((!name) || (!strlen(name))) {
+ send_error(s, "No channel specified");
+ return 0;
+ }
+ if ((!fname)||(!strlen(fname))) {
+ send_error(s, "No filename specified");
+ return 0;
+ }
+ c = ast_channel_walk(NULL);
+ while(c) {
+ if (!strcasecmp(c->name, name)) {
+ break;
+ }
+ c = ast_channel_walk(c);
+ }
+ if (!c) {
+ send_error(s, "No such channel");
+ return 0;
+ }
+ if( ast_monitor_change_fname( c, fname, 1 ) ) {
+ send_error(s, "Could not change monitored filename of channel");
+ return 0;
+ }
+ send_ack(s, "Stopped monitoring channel");
+ return 0;
+}
+
+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" );
+ 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;
+}
projects / asterisk/asterisk.git / commitdiff