bridge_features: Support One touch Monitor/MixMonitor
[asterisk/asterisk.git] / bridges / bridge_builtin_features.c
index 2d8a68a..91f709b 100644 (file)
@@ -50,6 +50,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include "asterisk/pbx.h"
 #include "asterisk/parking.h"
 #include "asterisk/features_config.h"
+#include "asterisk/monitor.h"
+#include "asterisk/mixmonitor.h"
+#include "asterisk/audiohook.h"
 
 /*!
  * \brief Helper function that presents dialtone and grabs extension
@@ -463,6 +466,304 @@ static int feature_attended_transfer(struct ast_bridge *bridge, struct ast_bridg
        return 0;
 }
 
+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_channel_lock(bridge_channel->chan);
+       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);
+
+       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);
+       }
+}
+
+enum set_touch_variables_res {
+       SET_TOUCH_SUCCESS = 0,
+       SET_TOUCH_UNSET,
+       SET_TOUCH_ALLOC_FAILURE,
+};
+
+static int set_touch_variables(struct ast_channel *chan, int is_mixmonitor, char **touch_format, char **touch_monitor, char **touch_monitor_prefix)
+{
+       enum set_touch_variables_res res = SET_TOUCH_UNSET;
+       const char *c_touch_format, *c_touch_monitor, *c_touch_monitor_prefix;
+
+       SCOPED_CHANNELLOCK(lock, chan);
+
+       c_touch_format = pbx_builtin_getvar_helper(chan, is_mixmonitor ? "TOUCH_MIXMONITOR_FORMAT" : "TOUCH_MONITOR_FORMAT");
+
+       if (!ast_strlen_zero(c_touch_format)) {
+               if (!(*touch_format = ast_strdup(c_touch_format))) {
+                       return SET_TOUCH_ALLOC_FAILURE;
+               }
+               res = SET_TOUCH_SUCCESS;
+       }
+
+       c_touch_monitor = pbx_builtin_getvar_helper(chan, is_mixmonitor ? "TOUCH_MIXMONITOR" : "TOUCH_MONITOR");
+
+       if (!ast_strlen_zero(c_touch_monitor)) {
+               if (!(*touch_monitor = ast_strdup(c_touch_monitor))) {
+                       return SET_TOUCH_ALLOC_FAILURE;
+               }
+               res = SET_TOUCH_SUCCESS;
+       }
+
+       c_touch_monitor_prefix = pbx_builtin_getvar_helper(chan, is_mixmonitor ? "TOUCH_MIXMONITOR_PREFIX" : "TOUCH_MONITOR_PREFIX");
+
+       if (!ast_strlen_zero(c_touch_monitor_prefix)) {
+               if (!(*touch_monitor_prefix = ast_strdup(c_touch_monitor_prefix))) {
+                       return SET_TOUCH_ALLOC_FAILURE;
+               }
+               res = SET_TOUCH_SUCCESS;
+       }
+
+       return res;
+}
+
+static int feature_automonitor(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
+{
+       char *caller_chan_id = NULL, *peer_chan_id = NULL, *touch_filename = NULL;
+       size_t len;
+       const char *automon_message;
+       int x;
+       enum set_touch_variables_res set_touch_res;
+
+       RAII_VAR(char *, touch_format, NULL, ast_free);
+       RAII_VAR(char *, touch_monitor, NULL, ast_free);
+       RAII_VAR(char *, touch_monitor_prefix, NULL, ast_free);
+
+       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);
+       peer_chan = ast_bridge_peer(bridge, bridge_channel->chan);
+
+       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;
+       }
+
+       if (ast_channel_monitor(peer_chan)) {
+               stop_automonitor(bridge_channel, peer_chan, features_cfg);
+               return 0;
+       }
+
+       if ((set_touch_res = set_touch_variables(bridge_channel->chan, 0, &touch_format, &touch_monitor, &touch_monitor_prefix))) {
+               if (set_touch_res == SET_TOUCH_ALLOC_FAILURE) {
+                       return 0;
+               }
+               if (set_touch_variables(peer_chan, 0, &touch_format, &touch_monitor, &touch_monitor_prefix) == SET_TOUCH_ALLOC_FAILURE) {
+                       return 0;
+               }
+       }
+
+       if (!ast_strlen_zero(touch_monitor)) {
+               len = strlen(touch_monitor) + 50;
+               touch_filename = ast_alloca(len);
+               snprintf(touch_filename, len, "%s-%ld-%s", S_OR(touch_monitor_prefix, "auto"), (long)time(NULL), touch_monitor);
+       } else {
+               caller_chan_id = ast_strdupa(S_COR(ast_channel_caller(bridge_channel->chan)->id.number.valid,
+                       ast_channel_caller(bridge_channel->chan)->id.number.str, ast_channel_name(bridge_channel->chan)));
+               peer_chan_id = ast_strdupa(S_COR(ast_channel_caller(peer_chan)->id.number.valid,
+                       ast_channel_caller(peer_chan)->id.number.str, ast_channel_name(peer_chan)));
+               len = strlen(caller_chan_id) + strlen(peer_chan_id) + 50;
+               touch_filename = ast_alloca(len);
+               snprintf(touch_filename, len, "%s-%ld-%s-%s", S_OR(touch_monitor_prefix, "auto"), (long)time(NULL), caller_chan_id, peer_chan_id);
+       }
+
+       for ( x = 0; x < strlen(touch_filename); x++) {
+               if (touch_filename[x] == '/') {
+                       touch_filename[x] = '-';
+               }
+       }
+
+       ast_verb(3, "AutoMonitor used to record call. Filename: %s\n", touch_filename);
+
+       if (ast_monitor_start(peer_chan, touch_format, touch_filename, 1, X_REC_IN | X_REC_OUT)) {
+               ast_verb(3, "automon feature was tried by '%s' but monitor failed to start.\n", ast_channel_name(bridge_channel->chan));
+               return 0;
+       }
+
+       ast_channel_lock(bridge_channel->chan);
+       if ((automon_message = pbx_builtin_getvar_helper(bridge_channel->chan, "TOUCH_MONITOR_MESSAGE_START"))) {
+               automon_message = ast_strdupa(automon_message);
+       }
+       ast_channel_unlock(bridge_channel->chan);
+
+       if ((features_cfg = ast_get_chan_features_general_config(bridge_channel->chan)) && !(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(automon_message)) {
+               ast_bridge_channel_queue_playfile(bridge_channel, NULL, automon_message, NULL);
+               ast_bridge_channel_write_playfile(bridge_channel, NULL, automon_message, NULL);
+       }
+
+       pbx_builtin_setvar_helper(peer_chan, "TOUCH_MONITOR_OUTPUT", touch_filename);
+
+       return 0;
+}
+
+static void stop_automixmonitor(struct ast_bridge_channel *bridge_channel, struct ast_channel *peer_chan, struct ast_features_general_config *features_cfg)
+{
+       const char *stop_message;
+
+       ast_channel_lock(bridge_channel->chan);
+       stop_message = pbx_builtin_getvar_helper(bridge_channel->chan, "TOUCH_MIXMONITOR_MESSAGE_STOP");
+       stop_message = ast_strdupa(S_OR(stop_message, ""));
+       ast_channel_unlock(bridge_channel->chan);
+
+       ast_verb(3, "AutoMixMonitor used to stop recording call.\n");
+
+       if (ast_stop_mixmonitor(peer_chan, NULL)) {
+               ast_verb(3, "Failed to stop Mixmonitor 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);
+               }
+               return;
+       }
+
+       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);
+       }
+
+}
+
+static int feature_automixmonitor(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
+{
+       char *caller_chan_id = NULL, *peer_chan_id = NULL, *touch_filename = NULL;
+       size_t len;
+       const char *automon_message;
+       static char *mixmonitor_spy_type = "MixMonitor";
+       int count, x;
+       enum set_touch_variables_res set_touch_res;
+
+       RAII_VAR(char *, touch_format, NULL, ast_free);
+       RAII_VAR(char *, touch_monitor, NULL, ast_free);
+       RAII_VAR(char *, touch_monitor_prefix, NULL, ast_free);
+
+       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);
+
+       peer_chan = ast_bridge_peer(bridge, bridge_channel->chan);
+
+       if (!peer_chan) {
+               ast_verb(3, "Cannot start AutoMixMonitor 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;
+       }
+
+       count = ast_channel_audiohook_count_by_source(peer_chan, mixmonitor_spy_type, AST_AUDIOHOOK_TYPE_SPY);
+       if (count > 0) {
+               stop_automixmonitor(bridge_channel, peer_chan, features_cfg);
+               return 0;
+       }
+
+       if ((set_touch_res = set_touch_variables(bridge_channel->chan, 1, &touch_format, &touch_monitor, &touch_monitor_prefix))) {
+               if (set_touch_res == SET_TOUCH_ALLOC_FAILURE) {
+                       return 0;
+               }
+               if (set_touch_variables(peer_chan, 1, &touch_format, &touch_monitor, &touch_monitor_prefix) == SET_TOUCH_ALLOC_FAILURE) {
+                       return 0;
+               }
+       }
+
+       if (!ast_strlen_zero(touch_monitor)) {
+               len = strlen(touch_monitor) + 50;
+               touch_filename = ast_alloca(len);
+               snprintf(touch_filename, len, "%s-%ld-%s.%s", S_OR(touch_monitor_prefix, "auto"), (long)time(NULL), touch_monitor, S_OR(touch_format, "wav"));
+       } else {
+               caller_chan_id = ast_strdupa(S_COR(ast_channel_caller(bridge_channel->chan)->id.number.valid,
+                       ast_channel_caller(bridge_channel->chan)->id.number.str, ast_channel_name(bridge_channel->chan)));
+               peer_chan_id = ast_strdupa(S_COR(ast_channel_caller(peer_chan)->id.number.valid,
+                       ast_channel_caller(peer_chan)->id.number.str, ast_channel_name(peer_chan)));
+               len = strlen(caller_chan_id) + strlen(peer_chan_id) + 50;
+               touch_filename = ast_alloca(len);
+               snprintf(touch_filename, len, "%s-%ld-%s-%s.%s", S_OR(touch_monitor_prefix, "auto"), (long)time(NULL), caller_chan_id, peer_chan_id, S_OR(touch_format, "wav"));
+       }
+
+       for ( x = 0; x < strlen(touch_filename); x++) {
+               if (touch_filename[x] == '/') {
+                       touch_filename[x] = '-';
+               }
+       }
+
+       ast_verb(3, "AutoMixMonitor used to record call. Filename: %s\n", touch_filename);
+
+       if (ast_start_mixmonitor(peer_chan, touch_filename, "b")) {
+               ast_verb(3, "automixmon feature was tried by '%s' but mixmonitor failed to start.\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);
+       if ((automon_message = pbx_builtin_getvar_helper(bridge_channel->chan, "TOUCH_MIXMONITOR_MESSAGE_START"))) {
+               automon_message = ast_strdupa(automon_message);
+       }
+       ast_channel_unlock(bridge_channel->chan);
+
+       if ((features_cfg = ast_get_chan_features_general_config(bridge_channel->chan)) && !(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(automon_message)) {
+               ast_bridge_channel_queue_playfile(bridge_channel, NULL, automon_message, NULL);
+               ast_bridge_channel_write_playfile(bridge_channel, NULL, automon_message, NULL);
+       }
+
+       pbx_builtin_setvar_helper(peer_chan, "TOUCH_MIXMONITOR_OUTPUT", touch_filename);
+
+       return 0;
+}
+
 /*! \brief Internal built in feature for hangup */
 static int feature_hangup(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
 {
@@ -485,6 +786,8 @@ static int load_module(void)
        ast_bridge_features_register(AST_BRIDGE_BUILTIN_BLINDTRANSFER, feature_blind_transfer, NULL);
        ast_bridge_features_register(AST_BRIDGE_BUILTIN_ATTENDEDTRANSFER, feature_attended_transfer, NULL);
        ast_bridge_features_register(AST_BRIDGE_BUILTIN_HANGUP, feature_hangup, NULL);
+       ast_bridge_features_register(AST_BRIDGE_BUILTIN_AUTOMON, feature_automonitor, NULL);
+       ast_bridge_features_register(AST_BRIDGE_BUILTIN_AUTOMIXMON, feature_automixmonitor, NULL);
 
        /* Bump up our reference count so we can't be unloaded */
        ast_module_ref(ast_module_info->self);