static void stop_automonitor(struct ast_bridge_channel *bridge_channel, struct ast_channel *peer_chan, struct ast_features_general_config *features_cfg, const char *stop_message)
{
ast_verb(3, "AutoMonitor used to stop recording call.\n");
ast_channel_lock(peer_chan);
if (ast_channel_monitor(peer_chan)) {
if (ast_channel_monitor(peer_chan)->stop(peer_chan, 1)) {
ast_verb(3, "Cannot stop AutoMonitor for %s\n", ast_channel_name(bridge_channel->chan));
if (features_cfg && !(ast_strlen_zero(features_cfg->recordingfailsound))) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, features_cfg->recordingfailsound, NULL);
}
ast_channel_unlock(peer_chan);
return;
}
} else {
/* Something else removed the Monitor before we got to it. */
ast_channel_unlock(peer_chan);
return;
}
ast_channel_unlock(peer_chan);
if (features_cfg && !(ast_strlen_zero(features_cfg->courtesytone))) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, features_cfg->courtesytone, NULL);
ast_bridge_channel_write_playfile(bridge_channel, NULL, features_cfg->courtesytone, NULL);
}
if (!ast_strlen_zero(stop_message)) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, stop_message, NULL);
ast_bridge_channel_write_playfile(bridge_channel, NULL, stop_message, NULL);
}
}
/*!
* \brief Change state of monitored channel
* \param chan
* \param state monitor state
* \retval 0 on success.
* \retval -1 on failure.
*/
static int ast_monitor_set_state(struct ast_channel *chan, int state)
{
LOCK_IF_NEEDED(chan, 1);
if (!ast_channel_monitor(chan)) {
UNLOCK_IF_NEEDED(chan, 1);
return -1;
}
ast_channel_monitor(chan)->state = state;
UNLOCK_IF_NEEDED(chan, 1);
return 0;
}
/*!
* \brief Change monitored filename of channel
* \param chan
* \param fname_base new filename
* \param need_lock
* \retval 0 on success.
* \retval -1 on failure.
*/
int AST_OPTIONAL_API_NAME(ast_monitor_change_fname)(struct ast_channel *chan, const char *fname_base, int need_lock)
{
if (ast_strlen_zero(fname_base)) {
ast_log(LOG_WARNING, "Cannot change monitor filename of channel %s to null\n", ast_channel_name(chan));
return -1;
}
LOCK_IF_NEEDED(chan, need_lock);
if (ast_channel_monitor(chan)) {
int directory = strchr(fname_base, '/') ? 1 : 0;
const char *absolute = *fname_base == '/' ? "" : ast_config_AST_MONITOR_DIR;
const char *absolute_suffix = *fname_base == '/' ? "" : "/";
char tmpstring[sizeof(ast_channel_monitor(chan)->filename_base)] = "";
int i, fd[2] = { -1, -1 }, doexit = 0;
/* before continuing, see if we're trying to rename the file to itself... */
snprintf(tmpstring, sizeof(tmpstring), "%s%s%s", absolute, absolute_suffix, fname_base);
/* try creating the directory just in case it doesn't exist */
if (directory) {
char *name = ast_strdupa(tmpstring);
ast_mkdir(dirname(name), 0777);
}
/*!
* \note We cannot just compare filenames, due to symlinks, relative
* paths, and other possible filesystem issues. We could use
* realpath(3), but its use is discouraged. However, if we try to
* create the same file from two different paths, the second will
* fail, and so we have our notification that the filenames point to
* the same path.
*
* Remember, also, that we're using the basename of the file (i.e.
* the file without the format suffix), so it does not already exist
* and we aren't interfering with the recording itself.
*/
ast_debug(2, "comparing tmpstring %s to filename_base %s\n", tmpstring, ast_channel_monitor(chan)->filename_base);
if ((fd[0] = open(tmpstring, O_CREAT | O_WRONLY, 0644)) < 0 ||
(fd[1] = open(ast_channel_monitor(chan)->filename_base, O_CREAT | O_EXCL | O_WRONLY, 0644)) < 0) {
if (fd[0] < 0) {
ast_log(LOG_ERROR, "Unable to compare filenames: %s\n", strerror(errno));
} else {
ast_debug(2, "No need to rename monitor filename to itself\n");
}
doexit = 1;
}
/* Cleanup temporary files */
for (i = 0; i < 2; i++) {
if (fd[i] >= 0) {
while (close(fd[i]) < 0 && errno == EINTR);
}
}
unlink(tmpstring);
/* if previous monitor file existed in a subdirectory, the directory will not be removed */
unlink(ast_channel_monitor(chan)->filename_base);
if (doexit) {
UNLOCK_IF_NEEDED(chan, need_lock);
return 0;
}
ast_copy_string(ast_channel_monitor(chan)->filename_base, tmpstring, sizeof(ast_channel_monitor(chan)->filename_base));
ast_channel_monitor(chan)->filename_changed = 1;
} else {
ast_log(LOG_WARNING, "Cannot change monitor filename of channel %s to %s, monitoring not started\n", ast_channel_name(chan), fname_base);
}
UNLOCK_IF_NEEDED(chan, need_lock);
return 0;
}
/*!
* \brief Stop monitoring channel
* \param chan
* \param need_lock
* Stop the recording, close any open streams, mix in/out channels if required
* \return Always 0
*/
int AST_OPTIONAL_API_NAME(ast_monitor_stop)(struct ast_channel *chan, int need_lock)
{
int delfiles = 0;
LOCK_IF_NEEDED(chan, need_lock);
if (ast_channel_monitor(chan)) {
char filename[ FILENAME_MAX ];
if (ast_channel_monitor(chan)->read_stream) {
ast_closestream(ast_channel_monitor(chan)->read_stream);
}
if (ast_channel_monitor(chan)->write_stream) {
ast_closestream(ast_channel_monitor(chan)->write_stream);
}
if (ast_channel_monitor(chan)->filename_changed && !ast_strlen_zero(ast_channel_monitor(chan)->filename_base)) {
if (ast_channel_monitor(chan)->read_stream) {
if (ast_fileexists(ast_channel_monitor(chan)->read_filename,NULL,NULL) > 0) {
snprintf(filename, FILENAME_MAX, "%s-in", ast_channel_monitor(chan)->filename_base);
if (ast_fileexists(filename, NULL, NULL) > 0) {
ast_filedelete(filename, NULL);
}
ast_filerename(ast_channel_monitor(chan)->read_filename, filename, ast_channel_monitor(chan)->format);
} else {
ast_log(LOG_WARNING, "File %s not found\n", ast_channel_monitor(chan)->read_filename);
}
}
if (ast_channel_monitor(chan)->write_stream) {
if (ast_fileexists(ast_channel_monitor(chan)->write_filename,NULL,NULL) > 0) {
snprintf(filename, FILENAME_MAX, "%s-out", ast_channel_monitor(chan)->filename_base);
if (ast_fileexists(filename, NULL, NULL) > 0) {
ast_filedelete(filename, NULL);
}
ast_filerename(ast_channel_monitor(chan)->write_filename, filename, ast_channel_monitor(chan)->format);
} else {
ast_log(LOG_WARNING, "File %s not found\n", ast_channel_monitor(chan)->write_filename);
}
}
}
if (ast_channel_monitor(chan)->joinfiles && !ast_strlen_zero(ast_channel_monitor(chan)->filename_base)) {
char tmp[1024];
char tmp2[1024];
const char *format = !strcasecmp(ast_channel_monitor(chan)->format,"wav49") ? "WAV" : ast_channel_monitor(chan)->format;
char *fname_base = ast_channel_monitor(chan)->filename_base;
const char *execute, *execute_args;
/* at this point, fname_base really is the full path */
/* Set the execute application */
execute = pbx_builtin_getvar_helper(chan, "MONITOR_EXEC");
if (ast_strlen_zero(execute)) {
#ifdef HAVE_SOXMIX
execute = "nice -n 19 soxmix";
#else
execute = "nice -n 19 sox -m";
#endif
format = get_soxmix_format(format);
delfiles = 1;
}
execute_args = pbx_builtin_getvar_helper(chan, "MONITOR_EXEC_ARGS");
if (ast_strlen_zero(execute_args)) {
execute_args = "";
}
snprintf(tmp, sizeof(tmp), "%s \"%s-in.%s\" \"%s-out.%s\" \"%s.%s\" %s &",
execute, fname_base, format, fname_base, format, fname_base, format,execute_args);
if (delfiles) {
snprintf(tmp2,sizeof(tmp2), "( %s& rm -f \"%s-\"* ) &",tmp, fname_base); /* remove legs when done mixing */
ast_copy_string(tmp, tmp2, sizeof(tmp));
}
ast_debug(1,"monitor executing %s\n",tmp);
if (ast_safe_system(tmp) == -1)
ast_log(LOG_WARNING, "Execute of %s failed.\n",tmp);
}
ast_free(ast_channel_monitor(chan)->format);
ast_free(ast_channel_monitor(chan));
ast_channel_monitor_set(chan, NULL);
ast_manager_event(chan, EVENT_FLAG_CALL, "MonitorStop",
"Channel: %s\r\n"
"Uniqueid: %s\r\n",
ast_channel_name(chan),
ast_channel_uniqueid(chan)
);
pbx_builtin_setvar_helper(chan, "MONITORED", NULL);
}
pbx_builtin_setvar_helper(chan, "AUTO_MONITOR", NULL);
UNLOCK_IF_NEEDED(chan, need_lock);
return 0;
}
/*! \brief Start monitoring a channel
* \param chan ast_channel struct to record
* \param format_spec file format to use for recording
* \param fname_base filename base to record to
* \param need_lock whether to lock the channel mutex
* \param stream_action whether to record the input and/or output streams. X_REC_IN | X_REC_OUT is most often used
* Creates the file to record, if no format is specified it assumes WAV
* It also sets channel variable __MONITORED=yes
* \retval 0 on success
* \retval -1 on failure
*/
int AST_OPTIONAL_API_NAME(ast_monitor_start)(struct ast_channel *chan, const char *format_spec,
const char *fname_base, int need_lock, int stream_action)
{
int res = 0;
LOCK_IF_NEEDED(chan, need_lock);
if (!(ast_channel_monitor(chan))) {
struct ast_channel_monitor *monitor;
char *channel_name, *p;
/* Create monitoring directory if needed */
ast_mkdir(ast_config_AST_MONITOR_DIR, 0777);
if (!(monitor = ast_calloc(1, sizeof(*monitor)))) {
UNLOCK_IF_NEEDED(chan, need_lock);
return -1;
}
/* Determine file names */
if (!ast_strlen_zero(fname_base)) {
int directory = strchr(fname_base, '/') ? 1 : 0;
const char *absolute = *fname_base == '/' ? "" : ast_config_AST_MONITOR_DIR;
const char *absolute_suffix = *fname_base == '/' ? "" : "/";
snprintf(monitor->read_filename, FILENAME_MAX, "%s%s%s-in",
absolute, absolute_suffix, fname_base);
snprintf(monitor->write_filename, FILENAME_MAX, "%s%s%s-out",
absolute, absolute_suffix, fname_base);
snprintf(monitor->filename_base, FILENAME_MAX, "%s%s%s",
absolute, absolute_suffix, fname_base);
/* try creating the directory just in case it doesn't exist */
if (directory) {
char *name = ast_strdupa(monitor->filename_base);
ast_mkdir(dirname(name), 0777);
}
} else {
ast_mutex_lock(&monitorlock);
snprintf(monitor->read_filename, FILENAME_MAX, "%s/audio-in-%lu",
ast_config_AST_MONITOR_DIR, seq);
snprintf(monitor->write_filename, FILENAME_MAX, "%s/audio-out-%lu",
ast_config_AST_MONITOR_DIR, seq);
seq++;
ast_mutex_unlock(&monitorlock);
/* Replace all '/' chars from the channel name with '-' chars. */
channel_name = ast_strdupa(ast_channel_name(chan));
for (p = channel_name; (p = strchr(p, '/')); ) {
*p = '-';
}
snprintf(monitor->filename_base, FILENAME_MAX, "%s/%d-%s",
ast_config_AST_MONITOR_DIR, (int)time(NULL), channel_name);
monitor->filename_changed = 1;
}
monitor->stop = ast_monitor_stop;
/* Determine file format */
if (!ast_strlen_zero(format_spec)) {
monitor->format = ast_strdup(format_spec);
} else {
monitor->format = ast_strdup("wav");
}
/* open files */
if (stream_action & X_REC_IN) {
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, AST_FILE_MODE))) {
ast_log(LOG_WARNING, "Could not create file %s\n",
monitor->read_filename);
ast_free(monitor);
UNLOCK_IF_NEEDED(chan, need_lock);
return -1;
}
} else
monitor->read_stream = NULL;
if (stream_action & X_REC_OUT) {
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, AST_FILE_MODE))) {
ast_log(LOG_WARNING, "Could not create file %s\n",
monitor->write_filename);
if (monitor->read_stream) {
ast_closestream(monitor->read_stream);
}
ast_free(monitor);
UNLOCK_IF_NEEDED(chan, need_lock);
return -1;
}
} else
monitor->write_stream = NULL;
ast_channel_monitor_set(chan, monitor);
ast_monitor_set_state(chan, AST_MONITOR_RUNNING);
/* so we know this call has been monitored in case we need to bill for it or something */
pbx_builtin_setvar_helper(chan, "__MONITORED","true");
ast_manager_event(chan, EVENT_FLAG_CALL, "MonitorStart",
"Channel: %s\r\n"
"Uniqueid: %s\r\n",
ast_channel_name(chan),
ast_channel_uniqueid(chan));
} else {
ast_debug(1,"Cannot start monitoring %s, already monitored\n", ast_channel_name(chan));
res = -1;
}
UNLOCK_IF_NEEDED(chan, need_lock);
return res;
}
static int feature_automonitor(struct ast_bridge_channel *bridge_channel, void *hook_pvt)
{
const char *start_message;
const char *stop_message;
struct ast_bridge_features_automonitor *options = hook_pvt;
enum ast_bridge_features_monitor start_stop = options ? options->start_stop : AUTO_MONITOR_TOGGLE;
int is_monitoring;
RAII_VAR(struct ast_channel *, peer_chan, NULL, ast_channel_cleanup);
RAII_VAR(struct ast_features_general_config *, features_cfg, NULL, ao2_cleanup);
features_cfg = ast_get_chan_features_general_config(bridge_channel->chan);
ast_bridge_channel_lock_bridge(bridge_channel);
peer_chan = ast_bridge_peer_nolock(bridge_channel->bridge, bridge_channel->chan);
ast_bridge_unlock(bridge_channel->bridge);
if (!peer_chan) {
ast_verb(3, "Cannot start AutoMonitor for %s - can not determine peer in bridge.\n",
ast_channel_name(bridge_channel->chan));
if (features_cfg && !ast_strlen_zero(features_cfg->recordingfailsound)) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, features_cfg->recordingfailsound, NULL);
}
return 0;
}
ast_channel_lock(bridge_channel->chan);
start_message = pbx_builtin_getvar_helper(bridge_channel->chan,
"TOUCH_MONITOR_MESSAGE_START");
start_message = ast_strdupa(S_OR(start_message, ""));
stop_message = pbx_builtin_getvar_helper(bridge_channel->chan,
"TOUCH_MONITOR_MESSAGE_STOP");
stop_message = ast_strdupa(S_OR(stop_message, ""));
ast_channel_unlock(bridge_channel->chan);
is_monitoring = ast_channel_monitor(peer_chan) != NULL;
switch (start_stop) {
case AUTO_MONITOR_TOGGLE:
if (is_monitoring) {
stop_automonitor(bridge_channel, peer_chan, features_cfg, stop_message);
} else {
start_automonitor(bridge_channel, peer_chan, features_cfg, start_message);
}
return 0;
case AUTO_MONITOR_START:
if (!is_monitoring) {
start_automonitor(bridge_channel, peer_chan, features_cfg, start_message);
return 0;
}
ast_verb(3, "AutoMonitor already recording call.\n");
break;
case AUTO_MONITOR_STOP:
if (is_monitoring) {
stop_automonitor(bridge_channel, peer_chan, features_cfg, stop_message);
return 0;
}
ast_verb(3, "AutoMonitor already not recording call.\n");
break;
}
/*
* Fake start/stop to invoker so will think it did something but
* was already in that mode.
*/
if (features_cfg && !ast_strlen_zero(features_cfg->courtesytone)) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, features_cfg->courtesytone, NULL);
}
if (is_monitoring) {
if (!ast_strlen_zero(start_message)) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, start_message, NULL);
}
} else {
if (!ast_strlen_zero(stop_message)) {
ast_bridge_channel_queue_playfile(bridge_channel, NULL, stop_message, NULL);
}
}
return 0;
}
/*!
* \internal
* \note This function assumes that we're only called from the "outbound" local channel side
*
* \note it is assummed p is locked and reffed before entering this function
*/
static void check_bridge(struct ast_channel *ast, struct local_pvt *p)
{
struct ast_channel *owner;
struct ast_channel *chan;
struct ast_channel *bridged_chan;
struct ast_frame *f;
/* Do a few conditional checks early on just to see if this optimization is possible */
if (ast_test_flag(p, LOCAL_NO_OPTIMIZATION | LOCAL_ALREADY_MASQED)
|| !p->chan || !p->owner) {
return;
}
/* Safely get the channel bridged to p->chan */
chan = ast_channel_ref(p->chan);
ao2_unlock(p); /* don't call bridged channel with the pvt locked */
bridged_chan = ast_bridged_channel(chan);
ao2_lock(p);
chan = ast_channel_unref(chan);
/* since we had to unlock p to get the bridged chan, validate our
* data once again and verify the bridged channel is what we expect
* it to be in order to perform this optimization */
if (ast_test_flag(p, LOCAL_NO_OPTIMIZATION | LOCAL_ALREADY_MASQED)
|| !p->chan || !p->owner
|| (ast_channel_internal_bridged_channel(p->chan) != bridged_chan)) {
return;
}
/* only do the masquerade if we are being called on the outbound channel,
if it has been bridged to another channel and if there are no pending
frames on the owner channel (because they would be transferred to the
outbound channel during the masquerade)
*/
if (!ast_channel_internal_bridged_channel(p->chan) /* Not ast_bridged_channel! Only go one step! */
|| !AST_LIST_EMPTY(ast_channel_readq(p->owner))
|| ast != p->chan /* Sanity check (should always be false) */) {
return;
}
/* Masquerade bridged channel into owner */
/* Lock everything we need, one by one, and give up if
we can't get everything. Remember, we'll get another
chance in just a little bit */
if (ast_channel_trylock(ast_channel_internal_bridged_channel(p->chan))) {
return;
}
if (ast_check_hangup(ast_channel_internal_bridged_channel(p->chan))
|| ast_channel_trylock(p->owner)) {
ast_channel_unlock(ast_channel_internal_bridged_channel(p->chan));
return;
}
/*
* At this point we have 4 locks:
* p, p->chan (same as ast), p->chan->_bridge, p->owner
*
* Flush a voice or video frame on the outbound channel to make
* the queue empty faster so we can get optimized out.
*/
f = AST_LIST_FIRST(ast_channel_readq(p->chan));
if (f && (f->frametype == AST_FRAME_VOICE || f->frametype == AST_FRAME_VIDEO)) {
AST_LIST_REMOVE_HEAD(ast_channel_readq(p->chan), frame_list);
ast_frfree(f);
f = AST_LIST_FIRST(ast_channel_readq(p->chan));
}
if (f
|| ast_check_hangup(p->owner)
|| ast_channel_masquerade(p->owner, ast_channel_internal_bridged_channel(p->chan))) {
ast_channel_unlock(p->owner);
ast_channel_unlock(ast_channel_internal_bridged_channel(p->chan));
return;
}
/* Masquerade got setup. */
ast_debug(4, "Masquerading %s <- %s\n",
ast_channel_name(p->owner),
ast_channel_name(ast_channel_internal_bridged_channel(p->chan)));
if (ast_channel_monitor(p->owner)
&& !ast_channel_monitor(ast_channel_internal_bridged_channel(p->chan))) {
struct ast_channel_monitor *tmp;
/* If a local channel is being monitored, we don't want a masquerade
* to cause the monitor to go away. Since the masquerade swaps the monitors,
* pre-swapping the monitors before the masquerade will ensure that the monitor
* ends up where it is expected.
*/
tmp = ast_channel_monitor(p->owner);
ast_channel_monitor_set(p->owner, ast_channel_monitor(ast_channel_internal_bridged_channel(p->chan)));
ast_channel_monitor_set(ast_channel_internal_bridged_channel(p->chan), tmp);
}
if (ast_channel_audiohooks(p->chan)) {
struct ast_audiohook_list *audiohooks_swapper;
audiohooks_swapper = ast_channel_audiohooks(p->chan);
ast_channel_audiohooks_set(p->chan, ast_channel_audiohooks(p->owner));
ast_channel_audiohooks_set(p->owner, audiohooks_swapper);
}
/* If any Caller ID was set, preserve it after masquerade like above. We must check
* to see if Caller ID was set because otherwise we'll mistakingly copy info not
* set from the dialplan and will overwrite the real channel Caller ID. The reason
* for this whole preswapping action is because the Caller ID is set on the channel
* thread (which is the to be masqueraded away local channel) before both local
* channels are optimized away.
*/
if (ast_channel_caller(p->owner)->id.name.valid || ast_channel_caller(p->owner)->id.number.valid
|| ast_channel_caller(p->owner)->id.subaddress.valid || ast_channel_caller(p->owner)->ani.name.valid
|| ast_channel_caller(p->owner)->ani.number.valid || ast_channel_caller(p->owner)->ani.subaddress.valid) {
SWAP(*ast_channel_caller(p->owner), *ast_channel_caller(ast_channel_internal_bridged_channel(p->chan)));
}
if (ast_channel_redirecting(p->owner)->from.name.valid || ast_channel_redirecting(p->owner)->from.number.valid
|| ast_channel_redirecting(p->owner)->from.subaddress.valid || ast_channel_redirecting(p->owner)->to.name.valid
|| ast_channel_redirecting(p->owner)->to.number.valid || ast_channel_redirecting(p->owner)->to.subaddress.valid) {
SWAP(*ast_channel_redirecting(p->owner), *ast_channel_redirecting(ast_channel_internal_bridged_channel(p->chan)));
}
if (ast_channel_dialed(p->owner)->number.str || ast_channel_dialed(p->owner)->subaddress.valid) {
SWAP(*ast_channel_dialed(p->owner), *ast_channel_dialed(ast_channel_internal_bridged_channel(p->chan)));
}
ast_app_group_update(p->chan, p->owner);
ast_set_flag(p, LOCAL_ALREADY_MASQED);
ast_channel_unlock(p->owner);
ast_channel_unlock(ast_channel_internal_bridged_channel(p->chan));
/* Do the masquerade now. */
owner = ast_channel_ref(p->owner);
ao2_unlock(p);
ast_channel_unlock(ast);
ast_do_masquerade(owner);
ast_channel_unref(owner);
ast_channel_lock(ast);
ao2_lock(p);
}
