From: Matthew Jordan Date: Mon, 18 Aug 2014 00:57:01 +0000 (+0000) Subject: Improve call forwarding reporting, especially with regards to ARI. X-Git-Tag: 14.0.0-beta1~1741 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba5d5da60b80b1d639e06d02d7692692281d6063;p=thirdparty%2Fasterisk.git Improve call forwarding reporting, especially with regards to ARI. This patch addresses a few issues: 1) The order of Dial events have been changed when performing a call forward. The order has now been altered to 1) Dial begins dialing channel A. 2) When A forwards the call to B, we issue the dial end event to channel A, indicating the dial is being canceled due to a forward to B. 3) When the call to channel B occurs, we then issue a new dial begin to channel B. 2) Call forwards are now reported on the calling channel, not the peer channel. 3) AMI DialEnd events have been altered to display the extension the call is being forwarded to when relevant. 4) You can now get the values of channel variables for channels that are not currently in the Stasis application. This brings the retrieval of channel variables more in line with the rest of channel read operations since they may be performed on channels not in Stasis. ASTERISK-24134 #close Reported by Matt Jordan ASTERISK-24138 #close Reported by Matt Jordan Patches: forward-shenanigans.diff uploaded by Matt Jordan (License #6283) Review: https://reviewboard.asterisk.org/r/3899 ........ Merged revisions 420794 from http://svn.asterisk.org/svn/asterisk/branches/13 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@421310 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- diff --git a/CHANGES b/CHANGES index f584db63f5..456b5ccef5 100644 --- a/CHANGES +++ b/CHANGES @@ -280,6 +280,10 @@ AMI * The AMI action PJSIPShowEndpoint now includes ContactStatusDetail sections that give information on Asterisk's attempts to qualify the endpoint. + * The DialEnd event will now contain a Forward header if the dial is ending + due to the call being forwarded. The contents of the Forward header is the + extension in the number to which the call is being forwarded. + CEL ------------------ * The "bridge_technology" extra field key has been added to BRIDGE_ENTER diff --git a/apps/app_dial.c b/apps/app_dial.c index 2faff84789..174ff776ea 100644 --- a/apps/app_dial.c +++ b/apps/app_dial.c @@ -895,6 +895,7 @@ static void do_forward(struct chanlist *o, struct cause_args *num, tech, stuff, cause); } if (!c) { + ast_channel_publish_dial(in, original, stuff, "BUSY"); ast_clear_flag64(o, DIAL_STILLGOING); handle_cause(cause, num); ast_hangup(original); @@ -995,16 +996,18 @@ static void do_forward(struct chanlist *o, struct cause_args *num, if (ast_call(c, stuff, 0)) { ast_log(LOG_NOTICE, "Forwarding failed to dial '%s/%s'\n", tech, stuff); + ast_channel_publish_dial(in, original, stuff, "CONGESTION"); ast_clear_flag64(o, DIAL_STILLGOING); ast_hangup(original); ast_hangup(c); c = o->chan = NULL; num->nochan++; } else { - ast_channel_publish_dial(in, c, stuff, NULL); ast_channel_publish_dial_forward(in, original, c, NULL, "CANCEL", ast_channel_call_forward(original)); + ast_channel_publish_dial(in, c, stuff, NULL); + /* Hangup the original channel now, in case we needed it */ ast_hangup(original); } diff --git a/include/asterisk/stasis_app.h b/include/asterisk/stasis_app.h index 5a7593d677..2e5901cb63 100644 --- a/include/asterisk/stasis_app.h +++ b/include/asterisk/stasis_app.h @@ -553,15 +553,6 @@ int stasis_app_control_unmute(struct stasis_app_control *control, unsigned int d */ int stasis_app_control_answer(struct stasis_app_control *control); -/*! - * \brief Get the value of a variable on the channel associated with this control. - * \param control Control for \c res_stasis. - * \param variable The name of the variable. - * - * \return The value of the variable. The returned variable must be freed. - */ -char *stasis_app_control_get_channel_var(struct stasis_app_control *control, const char *variable); - /*! * \brief Set a variable on the channel associated with this control to value. * \param control Control for \c res_stasis. diff --git a/main/manager_channels.c b/main/manager_channels.c index 9a15353f2f..127084161f 100644 --- a/main/manager_channels.c +++ b/main/manager_channels.c @@ -185,6 +185,10 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + + If the call was forwarded, where the call was + forwarded to. + Dial @@ -986,6 +990,7 @@ static void channel_dial_cb(void *data, struct stasis_subscription *sub, struct ast_multi_channel_blob *obj = stasis_message_data(message); const char *dialstatus; const char *dialstring; + const char *forward; struct ast_channel_snapshot *caller; struct ast_channel_snapshot *peer; RAII_VAR(struct ast_str *, caller_event_string, NULL, ast_free); @@ -1007,6 +1012,7 @@ static void channel_dial_cb(void *data, struct stasis_subscription *sub, dialstatus = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstatus")); dialstring = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstring")); + forward = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "forward")); if (ast_strlen_zero(dialstatus)) { manager_event(EVENT_FLAG_CALL, "DialBegin", "%s" @@ -1016,12 +1022,16 @@ static void channel_dial_cb(void *data, struct stasis_subscription *sub, ast_str_buffer(peer_event_string), S_OR(dialstring, "unknown")); } else { + int forwarded = !ast_strlen_zero(forward); + manager_event(EVENT_FLAG_CALL, "DialEnd", "%s" "%s" + "%s%s%s" "DialStatus: %s\r\n", caller_event_string ? ast_str_buffer(caller_event_string) : "", ast_str_buffer(peer_event_string), + forwarded ? "Forward: " : "", S_OR(forward, ""), forwarded ? "\r\n" : "", S_OR(dialstatus, "unknown")); } diff --git a/main/stasis_channels.c b/main/stasis_channels.c index d7fbc98ab9..d40b5701cb 100644 --- a/main/stasis_channels.c +++ b/main/stasis_channels.c @@ -288,11 +288,6 @@ static void channel_blob_dtor(void *obj) ast_json_unref(event->blob); } -/*! \brief Dummy callback for receiving events */ -static void dummy_event_cb(void *data, struct stasis_subscription *sub, struct stasis_message *message) -{ -} - void ast_channel_publish_dial_forward(struct ast_channel *caller, struct ast_channel *peer, struct ast_channel *forwarded, const char *dialstring, const char *dialstatus, const char *forward) @@ -362,14 +357,7 @@ void ast_channel_publish_dial_forward(struct ast_channel *caller, struct ast_cha return; } - if (forwarded) { - struct stasis_subscription *subscription = stasis_subscribe(ast_channel_topic(peer), dummy_event_cb, NULL); - - stasis_publish(ast_channel_topic(peer), msg); - stasis_unsubscribe_and_join(subscription); - } else { - publish_message_for_channel_topics(msg, caller); - } + publish_message_for_channel_topics(msg, caller); } void ast_channel_publish_dial(struct ast_channel *caller, struct ast_channel *peer, diff --git a/res/ari/resource_channels.c b/res/ari/resource_channels.c index 23f7fa0f6e..0ac53dd730 100644 --- a/res/ari/resource_channels.c +++ b/res/ari/resource_channels.c @@ -928,7 +928,8 @@ void ast_ari_channels_get_channel_var(struct ast_variable *headers, { RAII_VAR(struct ast_json *, json, NULL, ast_json_unref); RAII_VAR(struct stasis_app_control *, control, NULL, ao2_cleanup); - RAII_VAR(char *, value, NULL, ast_free); + RAII_VAR(struct ast_str *, value, ast_str_create(32), ast_free); + RAII_VAR(struct ast_channel *, channel, NULL, ast_channel_cleanup); ast_assert(response != NULL); @@ -939,15 +940,41 @@ void ast_ari_channels_get_channel_var(struct ast_variable *headers, return; } - control = find_control(response, args->channel_id); - if (control == NULL) { - /* response filled in by find_control */ + if (ast_strlen_zero(args->channel_id)) { + ast_ari_response_error( + response, 400, "Bad Request", + "Channel ID is required"); + return; + } + + channel = ast_channel_get_by_name(args->channel_id); + if (!channel) { + ast_ari_response_error( + response, 404, "Channel Not Found", + "Provided channel was not found"); return; } - value = stasis_app_control_get_channel_var(control, args->variable); + /* You may be tempted to lock the channel you're about to read from. You + * would be wrong. Some dialplan functions put the channel into + * autoservice, which deadlocks if the channel is already locked. + * ast_str_retrieve_variable() does its own locking, and the dialplan + * functions need to as well. We should be fine without the lock. + */ + + if (args->variable[strlen(args->variable) - 1] == ')') { + if (ast_func_read2(channel, args->variable, &value, 0)) { + ast_ari_response_alloc_failed(response); + return; + } + } else { + if (!ast_str_retrieve_variable(&value, 0, channel, NULL, args->variable)) { + ast_ari_response_alloc_failed(response); + return; + } + } - if (!(json = ast_json_pack("{s: s}", "value", S_OR(value, "")))) { + if (!(json = ast_json_pack("{s: s}", "value", S_OR(ast_str_buffer(value), "")))) { ast_ari_response_alloc_failed(response); return; } diff --git a/res/res_pjsip_pubsub.c b/res/res_pjsip_pubsub.c index f9b64f85fe..90be60d4e3 100644 --- a/res/res_pjsip_pubsub.c +++ b/res/res_pjsip_pubsub.c @@ -2032,10 +2032,13 @@ int ast_sip_subscription_notify(struct ast_sip_subscription *sub, void *notify_d if (sub->tree->notification_batch_interval) { return schedule_notification(sub->tree); } else { + int res; /* See the note in pubsub_on_rx_refresh() for why sub->tree is refbumped here */ ao2_ref(sub->tree, +1); - return send_notify(sub->tree, 0); + res = send_notify(sub->tree, 0); ao2_ref(sub->tree, -1); + + return res; } } diff --git a/res/stasis/app.c b/res/stasis/app.c index 7459696152..245936734b 100644 --- a/res/stasis/app.c +++ b/res/stasis/app.c @@ -1073,9 +1073,7 @@ static int unsubscribe(struct stasis_app *app, const char *kind, const char *id, forwards = ao2_find(app->forwards, id, OBJ_SEARCH_KEY | OBJ_NOLOCK); if (!forwards) { - ast_log(LOG_WARNING, - "App '%s' not subscribed to %s '%s'\n", - app->name, kind, id); + ast_debug(3, "App '%s' not subscribed to %s '%s'\n", app->name, kind, id); return -1; } forwards->interested--; diff --git a/res/stasis/control.c b/res/stasis/control.c index 0a9669d3bc..e53d93c06a 100644 --- a/res/stasis/control.c +++ b/res/stasis/control.c @@ -565,34 +565,6 @@ int stasis_app_control_unmute(struct stasis_app_control *control, unsigned int d return 0; } -char *stasis_app_control_get_channel_var(struct stasis_app_control *control, const char *variable) -{ - RAII_VAR(struct ast_str *, tmp, ast_str_create(32), ast_free); - - /* You may be tempted to lock the channel you're about to read from. You - * would be wrong. Some dialplan functions put the channel into - * autoservice, which deadlocks if the channel is already locked. - * ast_str_retrieve_variable() does its own locking, and the dialplan - * functions need to as well. We should be fine without the lock. - */ - - if (!tmp) { - return NULL; - } - - if (variable[strlen(variable) - 1] == ')') { - if (ast_func_read2(control->channel, variable, &tmp, 0)) { - return NULL; - } - } else { - if (!ast_str_retrieve_variable(&tmp, 0, control->channel, NULL, variable)) { - return NULL; - } - } - - return ast_strdup(ast_str_buffer(tmp)); -} - int stasis_app_control_set_channel_var(struct stasis_app_control *control, const char *variable, const char *value) { return pbx_builtin_setvar_helper(control->channel, variable, value);