CI: Various updates to buildAsterisk.sh
[asterisk/asterisk.git] / main / manager_channels.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 2013, Digium, Inc.
5  *
6  * David M. Lee, II <dlee@digium.com>
7  *
8  * See http://www.asterisk.org for more information about
9  * the Asterisk project. Please do not directly contact
10  * any of the maintainers of this project for assistance;
11  * the project provides a web site, mailing lists and IRC
12  * channels for your use.
13  *
14  * This program is free software, distributed under the terms of
15  * the GNU General Public License Version 2. See the LICENSE file
16  * at the top of the source tree.
17  */
18
19 /*! \file
20  *
21  * \brief The Asterisk Management Interface - AMI (channel event handling)
22  *
23  * \author David M. Lee, II <dlee@digium.com>
24  *
25  * AMI generated many per-channel and global-channel events by converting Stasis
26  * messages to AMI events. It makes sense to simply put them into a single file.
27  */
28
29 #include "asterisk.h"
30
31 #include "asterisk/callerid.h"
32 #include "asterisk/channel.h"
33 #include "asterisk/manager.h"
34 #include "asterisk/stasis_message_router.h"
35 #include "asterisk/pbx.h"
36 #include "asterisk/stasis_channels.h"
37
38 /*** DOCUMENTATION
39         <managerEvent language="en_US" name="Newchannel">
40                 <managerEventInstance class="EVENT_FLAG_CALL">
41                         <synopsis>Raised when a new channel is created.</synopsis>
42                         <syntax>
43                                 <channel_snapshot/>
44                         </syntax>
45                         <see-also>
46                                 <ref type="managerEvent">Newstate</ref>
47                                 <ref type="managerEvent">Hangup</ref>
48                         </see-also>
49                 </managerEventInstance>
50         </managerEvent>
51         <managerEvent language="en_US" name="Newstate">
52                 <managerEventInstance class="EVENT_FLAG_CALL">
53                         <synopsis>Raised when a channel's state changes.</synopsis>
54                         <syntax>
55                                 <channel_snapshot/>
56                         </syntax>
57                         <see-also>
58                                 <ref type="managerEvent">Newchannel</ref>
59                                 <ref type="managerEvent">Hangup</ref>
60                         </see-also>
61                 </managerEventInstance>
62         </managerEvent>
63         <managerEvent language="en_US" name="Hangup">
64                 <managerEventInstance class="EVENT_FLAG_CALL">
65                         <synopsis>Raised when a channel is hung up.</synopsis>
66                         <syntax>
67                                 <channel_snapshot/>
68                                 <parameter name="Cause">
69                                         <para>A numeric cause code for why the channel was hung up.</para>
70                                 </parameter>
71                                 <parameter name="Cause-txt">
72                                         <para>A description of why the channel was hung up.</para>
73                                 </parameter>
74                         </syntax>
75                         <see-also>
76                                 <ref type="managerEvent">Newchannel</ref>
77                                 <ref type="managerEvent">SoftHangupRequest</ref>
78                                 <ref type="managerEvent">HangupRequest</ref>
79                                 <ref type="managerEvent">Newstate</ref>
80                         </see-also>
81                 </managerEventInstance>
82         </managerEvent>
83         <managerEvent language="en_US" name="HangupRequest">
84                 <managerEventInstance class="EVENT_FLAG_CALL">
85                         <synopsis>Raised when a hangup is requested.</synopsis>
86                         <syntax>
87                                 <channel_snapshot/>
88                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='Hangup']/managerEventInstance/syntax/parameter[@name='Cause'])" />
89                         </syntax>
90                         <see-also>
91                                 <ref type="managerEvent">SoftHangupRequest</ref>
92                                 <ref type="managerEvent">Hangup</ref>
93                         </see-also>
94                 </managerEventInstance>
95         </managerEvent>
96         <managerEvent language="en_US" name="SoftHangupRequest">
97                 <managerEventInstance class="EVENT_FLAG_CALL">
98                         <synopsis>Raised when a soft hangup is requested with a specific cause code.</synopsis>
99                         <syntax>
100                                 <channel_snapshot/>
101                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='Hangup']/managerEventInstance/syntax/parameter[@name='Cause'])" />
102                         </syntax>
103                         <see-also>
104                                 <ref type="managerEvent">HangupRequest</ref>
105                                 <ref type="managerEvent">Hangup</ref>
106                         </see-also>
107                 </managerEventInstance>
108         </managerEvent>
109         <managerEvent language="en_US" name="NewExten">
110                 <managerEventInstance class="EVENT_FLAG_DIALPLAN">
111                         <synopsis>Raised when a channel enters a new context, extension, priority.</synopsis>
112                         <syntax>
113                                 <channel_snapshot/>
114                                 <parameter name="Extension">
115                                         <para>Deprecated in 12, but kept for
116                                         backward compatability. Please use
117                                         'Exten' instead.</para>
118                                 </parameter>
119                                 <parameter name="Application">
120                                         <para>The application about to be executed.</para>
121                                 </parameter>
122                                 <parameter name="AppData">
123                                         <para>The data to be passed to the application.</para>
124                                 </parameter>
125                         </syntax>
126                 </managerEventInstance>
127         </managerEvent>
128         <managerEvent language="en_US" name="NewCallerid">
129                 <managerEventInstance class="EVENT_FLAG_CALL">
130                         <synopsis>Raised when a channel receives new Caller ID information.</synopsis>
131                         <syntax>
132                                 <channel_snapshot/>
133                                 <parameter name="CID-CallingPres">
134                                         <para>A description of the Caller ID presentation.</para>
135                                 </parameter>
136                         </syntax>
137                         <see-also>
138                                 <ref type="function">CALLERID</ref>
139                         </see-also>
140                 </managerEventInstance>
141         </managerEvent>
142         <managerEvent language="en_US" name="NewConnectedLine">
143                 <managerEventInstance class="EVENT_FLAG_CALL">
144                         <synopsis>Raised when a channel's connected line information is changed.</synopsis>
145                         <syntax>
146                                 <channel_snapshot/>
147                         </syntax>
148                         <see-also>
149                                 <ref type="function">CONNECTEDLINE</ref>
150                         </see-also>
151                 </managerEventInstance>
152         </managerEvent>
153         <managerEvent language="en_US" name="NewAccountCode">
154                 <managerEventInstance class="EVENT_FLAG_CALL">
155                         <synopsis>Raised when a Channel's AccountCode is changed.</synopsis>
156                         <syntax>
157                                 <channel_snapshot/>
158                                 <parameter name="OldAccountCode">
159                                         <para>The channel's previous account code</para>
160                                 </parameter>
161                         </syntax>
162                         <see-also>
163                                 <ref type="function">CHANNEL</ref>
164                         </see-also>
165                 </managerEventInstance>
166         </managerEvent>
167         <managerEvent language="en_US" name="DialBegin">
168                 <managerEventInstance class="EVENT_FLAG_CALL">
169                         <synopsis>Raised when a dial action has started.</synopsis>
170                         <syntax>
171                                 <channel_snapshot/>
172                                 <channel_snapshot prefix="Dest"/>
173                                 <parameter name="DialString">
174                                         <para>The non-technology specific device being dialed.</para>
175                                 </parameter>
176                         </syntax>
177                         <see-also>
178                                 <ref type="application">Dial</ref>
179                                 <ref type="application">Originate</ref>
180                                 <ref type="manager">Originate</ref>
181                                 <ref type="managerEvent">DialEnd</ref>
182                         </see-also>
183                 </managerEventInstance>
184         </managerEvent>
185         <managerEvent language="en_US" name="DialState">
186                 <managerEventInstance class="EVENT_FLAG_CALL">
187                         <synopsis>Raised when dial status has changed.</synopsis>
188                         <syntax>
189                                 <channel_snapshot/>
190                                 <channel_snapshot prefix="Dest"/>
191                                 <parameter name="DialStatus">
192                                         <para> The new state of the outbound dial attempt.</para>
193                                         <enumlist>
194                                                 <enum name="RINGING">
195                                                         <para>The outbound channel is ringing.</para>
196                                                 </enum>
197                                                 <enum name="PROCEEDING">
198                                                         <para>The call to the outbound channel is proceeding.</para>
199                                                 </enum>
200                                                 <enum name="PROGRESS">
201                                                         <para>Progress has been received on the outbound channel.</para>
202                                                 </enum>
203                                         </enumlist>
204                                 </parameter>
205                                 <parameter name="Forward" required="false">
206                                         <para>If the call was forwarded, where the call was
207                                         forwarded to.</para>
208                                 </parameter>
209                         </syntax>
210                 </managerEventInstance>
211         </managerEvent>
212         <managerEvent language="en_US" name="DialEnd">
213                 <managerEventInstance class="EVENT_FLAG_CALL">
214                         <synopsis>Raised when a dial action has completed.</synopsis>
215                         <syntax>
216                                 <channel_snapshot/>
217                                 <channel_snapshot prefix="Dest"/>
218                                 <parameter name="DialStatus">
219                                         <para>The result of the dial operation.</para>
220                                         <enumlist>
221                                                 <enum name="ABORT">
222                                                         <para>The call was aborted.</para>
223                                                 </enum>
224                                                 <enum name="ANSWER">
225                                                         <para>The caller answered.</para>
226                                                 </enum>
227                                                 <enum name="BUSY">
228                                                         <para>The caller was busy.</para>
229                                                 </enum>
230                                                 <enum name="CANCEL">
231                                                         <para>The caller cancelled the call.</para>
232                                                 </enum>
233                                                 <enum name="CHANUNAVAIL">
234                                                         <para>The requested channel is unavailable.</para>
235                                                 </enum>
236                                                 <enum name="CONGESTION">
237                                                         <para>The called party is congested.</para>
238                                                 </enum>
239                                                 <enum name="CONTINUE">
240                                                         <para>The dial completed, but the caller elected
241                                                         to continue in the dialplan.</para>
242                                                 </enum>
243                                                 <enum name="GOTO">
244                                                         <para>The dial completed, but the caller jumped to
245                                                         a dialplan location.</para>
246                                                         <para>If known, the location the caller is jumping
247                                                         to will be appended to the result following a
248                                                         ":".</para>
249                                                 </enum>
250                                                 <enum name="NOANSWER">
251                                                         <para>The called party failed to answer.</para>
252                                                 </enum>
253                                         </enumlist>
254                                 </parameter>
255                                 <parameter name="Forward" required="false">
256                                         <para>If the call was forwarded, where the call was
257                                         forwarded to.</para>
258                                 </parameter>
259                         </syntax>
260                         <see-also>
261                                 <ref type="application">Dial</ref>
262                                 <ref type="application">Originate</ref>
263                                 <ref type="manager">Originate</ref>
264                                 <ref type="managerEvent">DialBegin</ref>
265                         </see-also>
266                 </managerEventInstance>
267         </managerEvent>
268         <managerEvent language="en_US" name="Hold">
269                 <managerEventInstance class="EVENT_FLAG_CALL">
270                         <synopsis>Raised when a channel goes on hold.</synopsis>
271                         <syntax>
272                                 <channel_snapshot/>
273                                 <parameter name="MusicClass">
274                                         <para>The suggested MusicClass, if provided.</para>
275                                 </parameter>
276                         </syntax>
277                         <see-also>
278                                 <ref type="managerEvent">Unhold</ref>
279                         </see-also>
280                 </managerEventInstance>
281         </managerEvent>
282         <managerEvent language="en_US" name="Unhold">
283                 <managerEventInstance class="EVENT_FLAG_CALL">
284                         <synopsis>Raised when a channel goes off hold.</synopsis>
285                         <syntax>
286                                 <channel_snapshot/>
287                         </syntax>
288                         <see-also>
289                                 <ref type="managerEvent">Hold</ref>
290                         </see-also>
291                 </managerEventInstance>
292         </managerEvent>
293         <managerEvent language="en_US" name="ChanSpyStart">
294                 <managerEventInstance class="EVENT_FLAG_CALL">
295                         <synopsis>Raised when one channel begins spying on another channel.</synopsis>
296                         <syntax>
297                                 <channel_snapshot prefix="Spyer"/>
298                                 <channel_snapshot prefix="Spyee"/>
299                         </syntax>
300                         <see-also>
301                                 <ref type="managerEvent">ChanSpyStop</ref>
302                                 <ref type="application">ChanSpy</ref>
303                         </see-also>
304                 </managerEventInstance>
305         </managerEvent>
306         <managerEvent language="en_US" name="ChanSpyStop">
307                 <managerEventInstance class="EVENT_FLAG_CALL">
308                         <synopsis>Raised when a channel has stopped spying.</synopsis>
309                         <syntax>
310                                 <channel_snapshot prefix="Spyer"/>
311                                 <channel_snapshot prefix="Spyee"/>
312                         </syntax>
313                         <see-also>
314                                 <ref type="managerEvent">ChanSpyStart</ref>
315                                 <ref type="application">ChanSpy</ref>
316                         </see-also>
317                 </managerEventInstance>
318         </managerEvent>
319         <managerEvent language="en_US" name="HangupHandlerRun">
320                 <managerEventInstance class="EVENT_FLAG_DIALPLAN">
321                         <synopsis>Raised when a hangup handler is about to be called.</synopsis>
322                         <syntax>
323                                 <channel_snapshot/>
324                                 <parameter name="Handler">
325                                         <para>Hangup handler parameter string passed to the Gosub application.</para>
326                                 </parameter>
327                         </syntax>
328                         <see-also>
329                                 <ref type="function">CHANNEL</ref>
330                         </see-also>
331                 </managerEventInstance>
332         </managerEvent>
333         <managerEvent language="en_US" name="HangupHandlerPop">
334                 <managerEventInstance class="EVENT_FLAG_DIALPLAN">
335                         <synopsis>
336                                 Raised when a hangup handler is removed from the handler stack
337                                 by the CHANNEL() function.
338                         </synopsis>
339                         <syntax>
340                                 <channel_snapshot/>
341                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='HangupHandlerRun']/managerEventInstance/syntax/parameter)" />
342                         </syntax>
343                         <see-also>
344                                 <ref type="managerEvent">HangupHandlerPush</ref>
345                                 <ref type="function">CHANNEL</ref>
346                         </see-also>
347                 </managerEventInstance>
348         </managerEvent>
349         <managerEvent language="en_US" name="HangupHandlerPush">
350                 <managerEventInstance class="EVENT_FLAG_DIALPLAN">
351                         <synopsis>
352                                 Raised when a hangup handler is added to the handler stack by
353                                 the CHANNEL() function.
354                         </synopsis>
355                         <syntax>
356                                 <channel_snapshot/>
357                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='HangupHandlerRun']/managerEventInstance/syntax/parameter)" />
358                         </syntax>
359                         <see-also>
360                                 <ref type="managerEvent">HangupHandlerPop</ref>
361                                 <ref type="function">CHANNEL</ref>
362                         </see-also>
363                 </managerEventInstance>
364         </managerEvent>
365         <managerEvent language="en_US" name="FAXStatus">
366                 <managerEventInstance class="EVENT_FLAG_CALL">
367                         <synopsis>
368                                 Raised periodically during a fax transmission.
369                         </synopsis>
370                         <syntax>
371                                 <channel_snapshot/>
372                                 <parameter name="Operation">
373                                         <enumlist>
374                                                 <enum name="gateway"/>
375                                                 <enum name="receive"/>
376                                                 <enum name="send"/>
377                                         </enumlist>
378                                 </parameter>
379                                 <parameter name="Status">
380                                         <para>A text message describing the current status of the fax</para>
381                                 </parameter>
382                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='ReceiveFAX']/managerEventInstance/syntax/parameter[@name='LocalStationID'])" />
383                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='ReceiveFAX']/managerEventInstance/syntax/parameter[@name='FileName'])" />
384                         </syntax>
385                 </managerEventInstance>
386         </managerEvent>
387         <managerEvent language="en_US" name="ReceiveFAX">
388                 <managerEventInstance class="EVENT_FLAG_CALL">
389                         <synopsis>
390                                 Raised when a receive fax operation has completed.
391                         </synopsis>
392                         <syntax>
393                                 <channel_snapshot/>
394                                 <parameter name="LocalStationID">
395                                         <para>The value of the <variable>LOCALSTATIONID</variable> channel variable</para>
396                                 </parameter>
397                                 <parameter name="RemoteStationID">
398                                         <para>The value of the <variable>REMOTESTATIONID</variable> channel variable</para>
399                                 </parameter>
400                                 <parameter name="PagesTransferred">
401                                         <para>The number of pages that have been transferred</para>
402                                 </parameter>
403                                 <parameter name="Resolution">
404                                         <para>The negotiated resolution</para>
405                                 </parameter>
406                                 <parameter name="TransferRate">
407                                         <para>The negotiated transfer rate</para>
408                                 </parameter>
409                                 <parameter name="FileName" multiple="yes">
410                                         <para>The files being affected by the fax operation</para>
411                                 </parameter>
412                         </syntax>
413                 </managerEventInstance>
414         </managerEvent>
415         <managerEvent language="en_US" name="SendFAX">
416                 <managerEventInstance class="EVENT_FLAG_CALL">
417                         <synopsis>
418                                 Raised when a send fax operation has completed.
419                         </synopsis>
420                         <syntax>
421                                 <channel_snapshot/>
422                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='ReceiveFAX']/managerEventInstance/syntax/parameter)" />
423                         </syntax>
424                 </managerEventInstance>
425         </managerEvent>
426         <managerEvent language="en_US" name="MusicOnHoldStart">
427                 <managerEventInstance class="EVENT_FLAG_CALL">
428                         <synopsis>Raised when music on hold has started on a channel.</synopsis>
429                         <syntax>
430                                 <channel_snapshot/>
431                                 <parameter name="Class">
432                                         <para>The class of music being played on the channel</para>
433                                 </parameter>
434                         </syntax>
435                         <see-also>
436                                 <ref type="managerEvent">MusicOnHoldStop</ref>
437                                 <ref type="application">StartMusicOnHold</ref>
438                                 <ref type="application">MusicOnHold</ref>
439                         </see-also>
440                 </managerEventInstance>
441         </managerEvent>
442         <managerEvent language="en_US" name="MusicOnHoldStop">
443                 <managerEventInstance class="EVENT_FLAG_CALL">
444                         <synopsis>Raised when music on hold has stopped on a channel.</synopsis>
445                         <syntax>
446                                 <channel_snapshot/>
447                         </syntax>
448                         <see-also>
449                                 <ref type="managerEvent">MusicOnHoldStart</ref>
450                                 <ref type="application">StopMusicOnHold</ref>
451                         </see-also>
452                 </managerEventInstance>
453         </managerEvent>
454         <managerEvent language="en_US" name="MonitorStart">
455                 <managerEventInstance class="EVENT_FLAG_CALL">
456                         <synopsis>Raised when monitoring has started on a channel.</synopsis>
457                         <syntax>
458                                 <channel_snapshot/>
459                         </syntax>
460                         <see-also>
461                                 <ref type="managerEvent">MonitorStop</ref>
462                                 <ref type="application">Monitor</ref>
463                                 <ref type="manager">Monitor</ref>
464                         </see-also>
465                 </managerEventInstance>
466         </managerEvent>
467         <managerEvent language="en_US" name="MonitorStop">
468                 <managerEventInstance class="EVENT_FLAG_CALL">
469                 <synopsis>Raised when monitoring has stopped on a channel.</synopsis>
470                 <syntax>
471                         <channel_snapshot/>
472                 </syntax>
473                 <see-also>
474                         <ref type="managerEvent">MonitorStart</ref>
475                         <ref type="application">StopMonitor</ref>
476                         <ref type="manager">StopMonitor</ref>
477                 </see-also>
478                 </managerEventInstance>
479         </managerEvent>
480 ***/
481
482 /*! \brief The \ref stasis subscription returned by the forwarding of the channel topic
483  * to the manager topic
484  */
485 static struct stasis_forward *topic_forwarder;
486
487 struct ast_str *ast_manager_build_channel_state_string_prefix(
488                 const struct ast_channel_snapshot *snapshot,
489                 const char *prefix)
490 {
491         struct ast_str *out;
492         char *caller_name;
493         char *connected_name;
494         int res;
495
496         if (snapshot->base->tech_properties & AST_CHAN_TP_INTERNAL) {
497                 return NULL;
498         }
499
500         out = ast_str_create(1024);
501         if (!out) {
502                 return NULL;
503         }
504
505         caller_name = ast_escape_c_alloc(snapshot->caller->name);
506         connected_name = ast_escape_c_alloc(snapshot->connected->name);
507
508         res = ast_str_set(&out, 0,
509                 "%sChannel: %s\r\n"
510                 "%sChannelState: %u\r\n"
511                 "%sChannelStateDesc: %s\r\n"
512                 "%sCallerIDNum: %s\r\n"
513                 "%sCallerIDName: %s\r\n"
514                 "%sConnectedLineNum: %s\r\n"
515                 "%sConnectedLineName: %s\r\n"
516                 "%sLanguage: %s\r\n"
517                 "%sAccountCode: %s\r\n"
518                 "%sContext: %s\r\n"
519                 "%sExten: %s\r\n"
520                 "%sPriority: %d\r\n"
521                 "%sUniqueid: %s\r\n"
522                 "%sLinkedid: %s\r\n",
523                 prefix, snapshot->base->name,
524                 prefix, snapshot->state,
525                 prefix, ast_state2str(snapshot->state),
526                 prefix, S_OR(snapshot->caller->number, "<unknown>"),
527                 prefix, S_OR(caller_name, "<unknown>"),
528                 prefix, S_OR(snapshot->connected->number, "<unknown>"),
529                 prefix, S_OR(connected_name, "<unknown>"),
530                 prefix, snapshot->base->language,
531                 prefix, snapshot->base->accountcode,
532                 prefix, snapshot->dialplan->context,
533                 prefix, snapshot->dialplan->exten,
534                 prefix, snapshot->dialplan->priority,
535                 prefix, snapshot->base->uniqueid,
536                 prefix, snapshot->peer->linkedid);
537
538         ast_free(caller_name);
539         ast_free(connected_name);
540
541         if (!res) {
542                 ast_free(out);
543                 return NULL;
544         }
545
546         if (snapshot->manager_vars) {
547                 struct ast_var_t *var;
548                 char *val;
549                 AST_LIST_TRAVERSE(snapshot->manager_vars, var, entries) {
550                         val = ast_escape_c_alloc(var->value);
551                         ast_str_append(&out, 0, "%sChanVariable: %s=%s\r\n",
552                                        prefix,
553                                        var->name, S_OR(val, ""));
554                         ast_free(val);
555                 }
556         }
557
558         return out;
559 }
560
561 struct ast_str *ast_manager_build_channel_state_string(
562                 const struct ast_channel_snapshot *snapshot)
563 {
564         return ast_manager_build_channel_state_string_prefix(snapshot, "");
565 }
566
567 /*! \brief Typedef for callbacks that get called on channel snapshot updates */
568 typedef struct ast_manager_event_blob *(*channel_snapshot_monitor)(
569         struct ast_channel_snapshot *old_snapshot,
570         struct ast_channel_snapshot *new_snapshot);
571
572 /*! \brief Handle channel state changes */
573 static struct ast_manager_event_blob *channel_state_change(
574         struct ast_channel_snapshot *old_snapshot,
575         struct ast_channel_snapshot *new_snapshot)
576 {
577         int is_hungup, was_hungup;
578
579         /* The Newchannel, Newstate and Hangup events are closely related, in
580          * in that they are mutually exclusive, basically different flavors
581          * of a new channel state event.
582          */
583
584         if (!old_snapshot) {
585                 return ast_manager_event_blob_create(
586                         EVENT_FLAG_CALL, "Newchannel", NO_EXTRA_FIELDS);
587         }
588
589         was_hungup = ast_test_flag(&old_snapshot->flags, AST_FLAG_DEAD) ? 1 : 0;
590         is_hungup = ast_test_flag(&new_snapshot->flags, AST_FLAG_DEAD) ? 1 : 0;
591
592         if (!was_hungup && is_hungup) {
593                 return ast_manager_event_blob_create(
594                         EVENT_FLAG_CALL, "Hangup",
595                         "Cause: %d\r\n"
596                         "Cause-txt: %s\r\n",
597                         new_snapshot->hangup->cause,
598                         ast_cause2str(new_snapshot->hangup->cause));
599         }
600
601         if (old_snapshot->state != new_snapshot->state) {
602                 return ast_manager_event_blob_create(
603                         EVENT_FLAG_CALL, "Newstate", NO_EXTRA_FIELDS);
604         }
605
606         /* No event */
607         return NULL;
608 }
609
610 static struct ast_manager_event_blob *channel_newexten(
611         struct ast_channel_snapshot *old_snapshot,
612         struct ast_channel_snapshot *new_snapshot)
613 {
614         /* Empty application is not valid for a Newexten event */
615         if (ast_strlen_zero(new_snapshot->dialplan->appl)) {
616                 return NULL;
617         }
618
619         /* Ignore any updates if we're hungup */
620         if (ast_test_flag(&new_snapshot->flags, AST_FLAG_DEAD)) {
621                 return NULL;
622         }
623
624         /* Ignore updates if the CEP is unchanged */
625         if (old_snapshot && ast_channel_snapshot_cep_equal(old_snapshot, new_snapshot)) {
626                 return NULL;
627         }
628
629         /* DEPRECATED: Extension field deprecated in 12; remove in 14 */
630         return ast_manager_event_blob_create(
631                 EVENT_FLAG_DIALPLAN, "Newexten",
632                 "Extension: %s\r\n"
633                 "Application: %s\r\n"
634                 "AppData: %s\r\n",
635                 new_snapshot->dialplan->exten,
636                 new_snapshot->dialplan->appl,
637                 new_snapshot->dialplan->data);
638 }
639
640 static struct ast_manager_event_blob *channel_new_callerid(
641         struct ast_channel_snapshot *old_snapshot,
642         struct ast_channel_snapshot *new_snapshot)
643 {
644         struct ast_manager_event_blob *res;
645         char *callerid;
646
647         /* No NewCallerid event on first channel snapshot */
648         if (!old_snapshot) {
649                 return NULL;
650         }
651
652         if (ast_channel_snapshot_caller_id_equal(old_snapshot, new_snapshot)) {
653                 return NULL;
654         }
655
656         if (!(callerid = ast_escape_c_alloc(
657                       ast_describe_caller_presentation(new_snapshot->caller->pres)))) {
658                 return NULL;
659         }
660
661         res = ast_manager_event_blob_create(
662                 EVENT_FLAG_CALL, "NewCallerid",
663                 "CID-CallingPres: %d (%s)\r\n",
664                 new_snapshot->caller->pres,
665                 callerid);
666
667         ast_free(callerid);
668         return res;
669 }
670
671 static struct ast_manager_event_blob *channel_new_connected_line(
672         struct ast_channel_snapshot *old_snapshot,
673         struct ast_channel_snapshot *new_snapshot)
674 {
675         /* No NewConnectedLine event on first channel snapshot */
676         if (!old_snapshot) {
677                 return NULL;
678         }
679
680         if (ast_channel_snapshot_connected_line_equal(old_snapshot, new_snapshot)) {
681                 return NULL;
682         }
683
684         return ast_manager_event_blob_create(
685                 EVENT_FLAG_CALL, "NewConnectedLine", "%s", "");
686 }
687
688 static struct ast_manager_event_blob *channel_new_accountcode(
689         struct ast_channel_snapshot *old_snapshot,
690         struct ast_channel_snapshot *new_snapshot)
691 {
692         if (!old_snapshot) {
693                 return NULL;
694         }
695
696         if (!strcmp(old_snapshot->base->accountcode, new_snapshot->base->accountcode)) {
697                 return NULL;
698         }
699
700         return ast_manager_event_blob_create(
701                 EVENT_FLAG_CALL, "NewAccountCode",
702                 "OldAccountCode: %s\r\n", old_snapshot->base->accountcode);
703 }
704
705 channel_snapshot_monitor channel_monitors[] = {
706         channel_state_change,
707         channel_newexten,
708         channel_new_callerid,
709         channel_new_accountcode,
710         channel_new_connected_line,
711 };
712
713 static void channel_snapshot_update(void *data, struct stasis_subscription *sub,
714                                     struct stasis_message *message)
715 {
716         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
717         struct ast_channel_snapshot_update *update;
718         size_t i;
719
720         update = stasis_message_data(message);
721
722         for (i = 0; i < ARRAY_LEN(channel_monitors); ++i) {
723                 RAII_VAR(struct ast_manager_event_blob *, ev, NULL, ao2_cleanup);
724                 ev = channel_monitors[i](update->old_snapshot, update->new_snapshot);
725
726                 if (!ev) {
727                         continue;
728                 }
729
730                 /* If we haven't already, build the channel event string */
731                 if (!channel_event_string) {
732                         channel_event_string =
733                                 ast_manager_build_channel_state_string(update->new_snapshot);
734                         if (!channel_event_string) {
735                                 return;
736                         }
737                 }
738
739                 manager_event(ev->event_flags, ev->manager_event, "%s%s",
740                         ast_str_buffer(channel_event_string),
741                         ev->extra_fields);
742         }
743 }
744
745 static void publish_basic_channel_event(const char *event, int class, struct ast_channel_snapshot *snapshot)
746 {
747         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
748
749         channel_event_string = ast_manager_build_channel_state_string(snapshot);
750         if (!channel_event_string) {
751                 return;
752         }
753
754         manager_event(class, event,
755                 "%s",
756                 ast_str_buffer(channel_event_string));
757 }
758
759 static void channel_hangup_request_cb(void *data,
760         struct stasis_subscription *sub,
761         struct stasis_message *message)
762 {
763         struct ast_channel_blob *obj = stasis_message_data(message);
764         struct ast_str *extra;
765         struct ast_str *channel_event_string;
766         struct ast_json *cause;
767         int is_soft;
768         char *manager_event = "HangupRequest";
769
770         if (!obj->snapshot) {
771                 /* No snapshot?  Likely an earlier allocation failure creating it. */
772                 return;
773         }
774
775         extra = ast_str_create(20);
776         if (!extra) {
777                 return;
778         }
779
780         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
781         if (!channel_event_string) {
782                 ast_free(extra);
783                 return;
784         }
785
786         cause = ast_json_object_get(obj->blob, "cause");
787         if (cause) {
788                 ast_str_append(&extra, 0,
789                         "Cause: %jd\r\n",
790                         ast_json_integer_get(cause));
791         }
792
793         is_soft = ast_json_is_true(ast_json_object_get(obj->blob, "soft"));
794         if (is_soft) {
795                 manager_event = "SoftHangupRequest";
796         }
797
798         manager_event(EVENT_FLAG_CALL, manager_event,
799                 "%s%s",
800                 ast_str_buffer(channel_event_string),
801                 ast_str_buffer(extra));
802
803         ast_free(channel_event_string);
804         ast_free(extra);
805 }
806
807 static void channel_chanspy_stop_cb(void *data, struct stasis_subscription *sub,
808                 struct stasis_message *message)
809 {
810         RAII_VAR(struct ast_str *, spyer_channel_string, NULL, ast_free);
811         struct ast_channel_snapshot *spyer;
812         struct ast_multi_channel_blob *payload = stasis_message_data(message);
813
814         spyer = ast_multi_channel_blob_get_channel(payload, "spyer_channel");
815         if (!spyer) {
816                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyer channel!\n");
817                 return;
818         }
819
820         spyer_channel_string = ast_manager_build_channel_state_string_prefix(spyer, "Spyer");
821         if (!spyer_channel_string) {
822                 return;
823         }
824
825         manager_event(EVENT_FLAG_CALL, "ChanSpyStop",
826                       "%s",
827                       ast_str_buffer(spyer_channel_string));
828 }
829
830 static void channel_chanspy_start_cb(void *data, struct stasis_subscription *sub,
831                 struct stasis_message *message)
832 {
833         RAII_VAR(struct ast_str *, spyer_channel_string, NULL, ast_free);
834         RAII_VAR(struct ast_str *, spyee_channel_string, NULL, ast_free);
835         struct ast_channel_snapshot *spyer;
836         struct ast_channel_snapshot *spyee;
837         struct ast_multi_channel_blob *payload = stasis_message_data(message);
838
839         spyer = ast_multi_channel_blob_get_channel(payload, "spyer_channel");
840         if (!spyer) {
841                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyer channel!\n");
842                 return;
843         }
844         spyee = ast_multi_channel_blob_get_channel(payload, "spyee_channel");
845         if (!spyee) {
846                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyee channel!\n");
847                 return;
848         }
849
850         spyer_channel_string = ast_manager_build_channel_state_string_prefix(spyer, "Spyer");
851         if (!spyer_channel_string) {
852                 return;
853         }
854         spyee_channel_string = ast_manager_build_channel_state_string_prefix(spyee, "Spyee");
855         if (!spyee_channel_string) {
856                 return;
857         }
858
859         manager_event(EVENT_FLAG_CALL, "ChanSpyStart",
860                       "%s%s",
861                       ast_str_buffer(spyer_channel_string),
862                       ast_str_buffer(spyee_channel_string));
863 }
864
865 static void channel_dtmf_begin_cb(void *data, struct stasis_subscription *sub,
866         struct stasis_message *message)
867 {
868         struct ast_channel_blob *obj = stasis_message_data(message);
869         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
870         const char *digit =
871                 ast_json_string_get(ast_json_object_get(obj->blob, "digit"));
872         const char *direction =
873                 ast_json_string_get(ast_json_object_get(obj->blob, "direction"));
874
875         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
876
877         if (!channel_event_string) {
878                 return;
879         }
880
881         /*** DOCUMENTATION
882                 <managerEventInstance>
883                         <synopsis>Raised when a DTMF digit has started on a channel.</synopsis>
884                                 <syntax>
885                                         <channel_snapshot/>
886                                         <parameter name="Digit">
887                                                 <para>DTMF digit received or transmitted (0-9, A-E, # or *</para>
888                                         </parameter>
889                                         <parameter name="Direction">
890                                                 <enumlist>
891                                                         <enum name="Received"/>
892                                                         <enum name="Sent"/>
893                                                 </enumlist>
894                                         </parameter>
895                                 </syntax>
896                                 <see-also>
897                                         <ref type="managerEvent">DTMFEnd</ref>
898                                 </see-also>
899                 </managerEventInstance>
900         ***/
901         manager_event(EVENT_FLAG_DTMF, "DTMFBegin",
902                 "%s"
903                 "Digit: %s\r\n"
904                 "Direction: %s\r\n",
905                 ast_str_buffer(channel_event_string),
906                 digit, direction);
907 }
908
909 static void channel_dtmf_end_cb(void *data, struct stasis_subscription *sub,
910         struct stasis_message *message)
911 {
912         struct ast_channel_blob *obj = stasis_message_data(message);
913         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
914         const char *digit =
915                 ast_json_string_get(ast_json_object_get(obj->blob, "digit"));
916         const char *direction =
917                 ast_json_string_get(ast_json_object_get(obj->blob, "direction"));
918         long duration_ms =
919                 ast_json_integer_get(ast_json_object_get(obj->blob, "duration_ms"));
920
921         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
922
923         if (!channel_event_string) {
924                 return;
925         }
926
927         /*** DOCUMENTATION
928                 <managerEventInstance>
929                         <synopsis>Raised when a DTMF digit has ended on a channel.</synopsis>
930                                 <syntax>
931                                         <channel_snapshot/>
932                                         <parameter name="Digit">
933                                                 <para>DTMF digit received or transmitted (0-9, A-E, # or *</para>
934                                         </parameter>
935                                         <parameter name="DurationMs">
936                                                 <para>Duration (in milliseconds) DTMF was sent/received</para>
937                                         </parameter>
938                                         <parameter name="Direction">
939                                                 <enumlist>
940                                                         <enum name="Received"/>
941                                                         <enum name="Sent"/>
942                                                 </enumlist>
943                                         </parameter>
944                                 </syntax>
945                                 <see-also>
946                                         <ref type="managerEvent">DTMFBegin</ref>
947                                 </see-also>
948                 </managerEventInstance>
949         ***/
950         manager_event(EVENT_FLAG_DTMF, "DTMFEnd",
951                 "%s"
952                 "Digit: %s\r\n"
953                 "DurationMs: %ld\r\n"
954                 "Direction: %s\r\n",
955                 ast_str_buffer(channel_event_string),
956                 digit, duration_ms, direction);
957 }
958
959 static void channel_hangup_handler_cb(void *data, struct stasis_subscription *sub,
960                 struct stasis_message *message)
961 {
962         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
963         struct ast_channel_blob *payload = stasis_message_data(message);
964         const char *action = ast_json_string_get(ast_json_object_get(payload->blob, "type"));
965         const char *handler = ast_json_string_get(ast_json_object_get(payload->blob, "handler"));
966         const char *event;
967
968         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
969
970         if (!channel_event_string) {
971                 return;
972         }
973
974         if (!strcmp(action, "type")) {
975                 event = "HangupHandlerRun";
976         } else if (!strcmp(action, "type")) {
977                 event = "HangupHandlerPop";
978         } else if (!strcmp(action, "type")) {
979                 event = "HangupHandlerPush";
980         } else {
981                 return;
982         }
983         manager_event(EVENT_FLAG_DIALPLAN, event,
984                 "%s"
985                 "Handler: %s\r\n",
986                 ast_str_buffer(channel_event_string),
987                 handler);
988 }
989
990 static void channel_fax_cb(void *data, struct stasis_subscription *sub,
991                 struct stasis_message *message)
992 {
993         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
994         RAII_VAR(struct ast_str *, event_buffer, ast_str_create(256), ast_free);
995         struct ast_channel_blob *payload = stasis_message_data(message);
996         const char *type = ast_json_string_get(ast_json_object_get(payload->blob, "type"));
997         struct ast_json *operation = ast_json_object_get(payload->blob, "operation");
998         struct ast_json *status = ast_json_object_get(payload->blob, "status");
999         struct ast_json *local_station_id = ast_json_object_get(payload->blob, "local_station_id");
1000         struct ast_json *remote_station_id = ast_json_object_get(payload->blob, "remote_station_id");
1001         struct ast_json *fax_pages = ast_json_object_get(payload->blob, "fax_pages");
1002         struct ast_json *fax_resolution = ast_json_object_get(payload->blob, "fax_resolution");
1003         struct ast_json *fax_bitrate = ast_json_object_get(payload->blob, "fax_bitrate");
1004         struct ast_json *filenames = ast_json_object_get(payload->blob, "filenames");
1005         const char *event;
1006         size_t array_len;
1007         size_t i;
1008
1009         if (!event_buffer) {
1010                 return;
1011         }
1012
1013         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
1014         if (!channel_event_string) {
1015                 return;
1016         }
1017
1018         if (!strcmp(type, "status")) {
1019                 event = "FAXStatus";
1020         } else if (!strcmp(type, "receive")) {
1021                 event = "ReceiveFAX";
1022         } else if (!strcmp(type, "send")) {
1023                 event = "SendFAX";
1024         } else {
1025                 return;
1026         }
1027
1028         if (operation) {
1029                 ast_str_append(&event_buffer, 0, "Operation: %s\r\n", ast_json_string_get(operation));
1030         }
1031         if (status) {
1032                 ast_str_append(&event_buffer, 0, "Status: %s\r\n", ast_json_string_get(status));
1033         }
1034         if (local_station_id) {
1035                 ast_str_append(&event_buffer, 0, "LocalStationID: %s\r\n", ast_json_string_get(local_station_id));
1036         }
1037         if (remote_station_id) {
1038                 ast_str_append(&event_buffer, 0, "RemoteStationID: %s\r\n", ast_json_string_get(remote_station_id));
1039         }
1040         if (fax_pages) {
1041                 ast_str_append(&event_buffer, 0, "PagesTransferred: %s\r\n", ast_json_string_get(fax_pages));
1042         }
1043         if (fax_resolution) {
1044                 ast_str_append(&event_buffer, 0, "Resolution: %s\r\n", ast_json_string_get(fax_resolution));
1045         }
1046         if (fax_bitrate) {
1047                 ast_str_append(&event_buffer, 0, "TransferRate: %s\r\n", ast_json_string_get(fax_bitrate));
1048         }
1049         if (filenames) {
1050                 array_len = ast_json_array_size(filenames);
1051                 for (i = 0; i < array_len; i++) {
1052                         ast_str_append(&event_buffer, 0, "FileName: %s\r\n", ast_json_string_get(ast_json_array_get(filenames, i)));
1053                 }
1054         }
1055
1056         manager_event(EVENT_FLAG_CALL, event,
1057                 "%s"
1058                 "%s",
1059                 ast_str_buffer(channel_event_string),
1060                 ast_str_buffer(event_buffer));
1061 }
1062
1063 static void channel_moh_start_cb(void *data, struct stasis_subscription *sub,
1064                 struct stasis_message *message)
1065 {
1066         struct ast_channel_blob *payload = stasis_message_data(message);
1067         struct ast_json *blob = payload->blob;
1068         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
1069
1070         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
1071         if (!channel_event_string) {
1072                 return;
1073         }
1074
1075         manager_event(EVENT_FLAG_CALL, "MusicOnHoldStart",
1076                 "%s"
1077                 "Class: %s\r\n",
1078                 ast_str_buffer(channel_event_string),
1079                 ast_json_string_get(ast_json_object_get(blob, "class")));
1080
1081 }
1082
1083 static void channel_moh_stop_cb(void *data, struct stasis_subscription *sub,
1084                 struct stasis_message *message)
1085 {
1086         struct ast_channel_blob *payload = stasis_message_data(message);
1087
1088         publish_basic_channel_event("MusicOnHoldStop", EVENT_FLAG_CALL, payload->snapshot);
1089 }
1090
1091 static void channel_monitor_start_cb(void *data, struct stasis_subscription *sub,
1092                 struct stasis_message *message)
1093 {
1094         struct ast_channel_blob *payload = stasis_message_data(message);
1095
1096         publish_basic_channel_event("MonitorStart", EVENT_FLAG_CALL, payload->snapshot);
1097 }
1098
1099 static void channel_monitor_stop_cb(void *data, struct stasis_subscription *sub,
1100                 struct stasis_message *message)
1101 {
1102         struct ast_channel_blob *payload = stasis_message_data(message);
1103
1104         publish_basic_channel_event("MonitorStop", EVENT_FLAG_CALL, payload->snapshot);
1105 }
1106
1107 static int dial_status_end(const char *dialstatus)
1108 {
1109         return (strcmp(dialstatus, "RINGING") &&
1110                         strcmp(dialstatus, "PROCEEDING") &&
1111                         strcmp(dialstatus, "PROGRESS"));
1112 }
1113
1114 /*!
1115  * \brief Callback processing messages for channel dialing
1116  */
1117 static void channel_dial_cb(void *data, struct stasis_subscription *sub,
1118         struct stasis_message *message)
1119 {
1120         struct ast_multi_channel_blob *obj = stasis_message_data(message);
1121         const char *dialstatus;
1122         const char *dialstring;
1123         const char *forward;
1124         struct ast_channel_snapshot *caller;
1125         struct ast_channel_snapshot *peer;
1126         RAII_VAR(struct ast_str *, caller_event_string, NULL, ast_free);
1127         RAII_VAR(struct ast_str *, peer_event_string, NULL, ast_free);
1128
1129         caller = ast_multi_channel_blob_get_channel(obj, "caller");
1130         peer = ast_multi_channel_blob_get_channel(obj, "peer");
1131
1132         /* Peer is required - otherwise, who are we dialing? */
1133         ast_assert(peer != NULL);
1134         peer_event_string = ast_manager_build_channel_state_string_prefix(peer, "Dest");
1135         if (!peer_event_string) {
1136                 return;
1137         }
1138
1139         if (caller && !(caller_event_string = ast_manager_build_channel_state_string(caller))) {
1140                 return;
1141         }
1142
1143         dialstatus = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstatus"));
1144         dialstring = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstring"));
1145         forward = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "forward"));
1146         if (ast_strlen_zero(dialstatus)) {
1147                 manager_event(EVENT_FLAG_CALL, "DialBegin",
1148                                 "%s"
1149                                 "%s"
1150                                 "DialString: %s\r\n",
1151                                 caller_event_string ? ast_str_buffer(caller_event_string) : "",
1152                                 ast_str_buffer(peer_event_string),
1153                                 S_OR(dialstring, "unknown"));
1154         } else {
1155                 int forwarded = !ast_strlen_zero(forward);
1156
1157                 manager_event(EVENT_FLAG_CALL, dial_status_end(dialstatus) ? "DialEnd" : "DialState",
1158                                 "%s"
1159                                 "%s"
1160                                 "%s%s%s"
1161                                 "DialStatus: %s\r\n",
1162                                 caller_event_string ? ast_str_buffer(caller_event_string) : "",
1163                                 ast_str_buffer(peer_event_string),
1164                                 forwarded ? "Forward: " : "", S_OR(forward, ""), forwarded ? "\r\n" : "",
1165                                 S_OR(dialstatus, "unknown"));
1166         }
1167
1168 }
1169
1170 static void channel_hold_cb(void *data, struct stasis_subscription *sub,
1171         struct stasis_message *message)
1172 {
1173         struct ast_channel_blob *obj = stasis_message_data(message);
1174         struct ast_str *musicclass_string = ast_str_create(32);
1175         struct ast_str *channel_event_string;
1176
1177         if (!musicclass_string) {
1178                 return;
1179         }
1180
1181         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
1182         if (!channel_event_string) {
1183                 ast_free(musicclass_string);
1184                 return;
1185         }
1186
1187         if (obj->blob) {
1188                 const char *musicclass;
1189
1190                 musicclass = ast_json_string_get(ast_json_object_get(obj->blob, "musicclass"));
1191
1192                 if (!ast_strlen_zero(musicclass)) {
1193                         ast_str_set(&musicclass_string, 0, "MusicClass: %s\r\n", musicclass);
1194                 }
1195         }
1196
1197         manager_event(EVENT_FLAG_CALL, "Hold",
1198                 "%s"
1199                 "%s",
1200                 ast_str_buffer(channel_event_string),
1201                 ast_str_buffer(musicclass_string));
1202
1203         ast_free(musicclass_string);
1204         ast_free(channel_event_string);
1205 }
1206
1207 static void channel_unhold_cb(void *data, struct stasis_subscription *sub,
1208         struct stasis_message *message)
1209 {
1210         struct ast_channel_blob *obj = stasis_message_data(message);
1211         struct ast_str *channel_event_string;
1212
1213         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
1214         if (!channel_event_string) {
1215                 return;
1216         }
1217
1218         manager_event(EVENT_FLAG_CALL, "Unhold",
1219                 "%s",
1220                 ast_str_buffer(channel_event_string));
1221
1222         ast_free(channel_event_string);
1223 }
1224
1225 static void manager_channels_shutdown(void)
1226 {
1227         stasis_forward_cancel(topic_forwarder);
1228         topic_forwarder = NULL;
1229 }
1230
1231 int manager_channels_init(void)
1232 {
1233         int ret = 0;
1234         struct stasis_topic *manager_topic;
1235         struct stasis_topic *channel_topic;
1236         struct stasis_message_router *message_router;
1237
1238         manager_topic = ast_manager_get_topic();
1239         if (!manager_topic) {
1240                 return -1;
1241         }
1242         message_router = ast_manager_get_message_router();
1243         if (!message_router) {
1244                 return -1;
1245         }
1246         channel_topic = ast_channel_topic_all();
1247         if (!channel_topic) {
1248                 return -1;
1249         }
1250
1251         topic_forwarder = stasis_forward_all(channel_topic, manager_topic);
1252         if (!topic_forwarder) {
1253                 return -1;
1254         }
1255
1256         ast_register_cleanup(manager_channels_shutdown);
1257
1258         ret |= stasis_message_router_add(message_router,
1259                 ast_channel_snapshot_type(), channel_snapshot_update, NULL);
1260
1261         ret |= stasis_message_router_add(message_router,
1262                 ast_channel_dtmf_begin_type(), channel_dtmf_begin_cb, NULL);
1263
1264         ret |= stasis_message_router_add(message_router,
1265                 ast_channel_dtmf_end_type(), channel_dtmf_end_cb, NULL);
1266
1267         ret |= stasis_message_router_add(message_router,
1268                 ast_channel_hangup_request_type(), channel_hangup_request_cb,
1269                 NULL);
1270
1271         ret |= stasis_message_router_add(message_router,
1272                 ast_channel_dial_type(), channel_dial_cb, NULL);
1273
1274         ret |= stasis_message_router_add(message_router,
1275                 ast_channel_hold_type(), channel_hold_cb, NULL);
1276
1277         ret |= stasis_message_router_add(message_router,
1278                 ast_channel_unhold_type(), channel_unhold_cb, NULL);
1279
1280         ret |= stasis_message_router_add(message_router,
1281                 ast_channel_fax_type(), channel_fax_cb, NULL);
1282
1283         ret |= stasis_message_router_add(message_router,
1284                 ast_channel_chanspy_start_type(), channel_chanspy_start_cb,
1285                 NULL);
1286
1287         ret |= stasis_message_router_add(message_router,
1288                 ast_channel_chanspy_stop_type(), channel_chanspy_stop_cb, NULL);
1289
1290         ret |= stasis_message_router_add(message_router,
1291                 ast_channel_hangup_handler_type(), channel_hangup_handler_cb,
1292                 NULL);
1293
1294         ret |= stasis_message_router_add(message_router,
1295                 ast_channel_moh_start_type(), channel_moh_start_cb, NULL);
1296
1297         ret |= stasis_message_router_add(message_router,
1298                 ast_channel_moh_stop_type(), channel_moh_stop_cb, NULL);
1299
1300         ret |= stasis_message_router_add(message_router,
1301                 ast_channel_monitor_start_type(), channel_monitor_start_cb,
1302                 NULL);
1303
1304         ret |= stasis_message_router_add(message_router,
1305                 ast_channel_monitor_stop_type(), channel_monitor_stop_cb, NULL);
1306
1307         /* If somehow we failed to add any routes, just shut down the whole
1308          * thing and fail it.
1309          */
1310         if (ret) {
1311                 manager_channels_shutdown();
1312                 return -1;
1313         }
1314
1315         return 0;
1316 }