Merge "res_calendar: Specialized calendars depend on symbols of general calendar."
[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->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->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->language,
531                 prefix, snapshot->accountcode,
532                 prefix, snapshot->context,
533                 prefix, snapshot->exten,
534                 prefix, snapshot->priority,
535                 prefix, snapshot->uniqueid,
536                 prefix, snapshot->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         if (!new_snapshot) {
580                 /* Ignore cache clearing events; we'll see the hangup first */
581                 return NULL;
582         }
583
584         /* The Newchannel, Newstate and Hangup events are closely related, in
585          * in that they are mutually exclusive, basically different flavors
586          * of a new channel state event.
587          */
588
589         if (!old_snapshot) {
590                 return ast_manager_event_blob_create(
591                         EVENT_FLAG_CALL, "Newchannel", NO_EXTRA_FIELDS);
592         }
593
594         was_hungup = ast_test_flag(&old_snapshot->flags, AST_FLAG_DEAD) ? 1 : 0;
595         is_hungup = ast_test_flag(&new_snapshot->flags, AST_FLAG_DEAD) ? 1 : 0;
596
597         if (!was_hungup && is_hungup) {
598                 return ast_manager_event_blob_create(
599                         EVENT_FLAG_CALL, "Hangup",
600                         "Cause: %d\r\n"
601                         "Cause-txt: %s\r\n",
602                         new_snapshot->hangupcause,
603                         ast_cause2str(new_snapshot->hangupcause));
604         }
605
606         if (old_snapshot->state != new_snapshot->state) {
607                 return ast_manager_event_blob_create(
608                         EVENT_FLAG_CALL, "Newstate", NO_EXTRA_FIELDS);
609         }
610
611         /* No event */
612         return NULL;
613 }
614
615 static struct ast_manager_event_blob *channel_newexten(
616         struct ast_channel_snapshot *old_snapshot,
617         struct ast_channel_snapshot *new_snapshot)
618 {
619         /* No Newexten event on cache clear */
620         if (!new_snapshot) {
621                 return NULL;
622         }
623
624         /* Empty application is not valid for a Newexten event */
625         if (ast_strlen_zero(new_snapshot->appl)) {
626                 return NULL;
627         }
628
629         /* Ignore any updates if we're hungup */
630         if (ast_test_flag(&new_snapshot->flags, AST_FLAG_DEAD)) {
631                 return NULL;
632         }
633
634         /* Ignore updates if the CEP is unchanged */
635         if (old_snapshot && ast_channel_snapshot_cep_equal(old_snapshot, new_snapshot)) {
636                 return NULL;
637         }
638
639         /* DEPRECATED: Extension field deprecated in 12; remove in 14 */
640         return ast_manager_event_blob_create(
641                 EVENT_FLAG_CALL, "Newexten",
642                 "Extension: %s\r\n"
643                 "Application: %s\r\n"
644                 "AppData: %s\r\n",
645                 new_snapshot->exten,
646                 new_snapshot->appl,
647                 new_snapshot->data);
648 }
649
650 static struct ast_manager_event_blob *channel_new_callerid(
651         struct ast_channel_snapshot *old_snapshot,
652         struct ast_channel_snapshot *new_snapshot)
653 {
654         struct ast_manager_event_blob *res;
655         char *callerid;
656
657         /* No NewCallerid event on cache clear or first event */
658         if (!old_snapshot || !new_snapshot) {
659                 return NULL;
660         }
661
662         if (ast_channel_snapshot_caller_id_equal(old_snapshot, new_snapshot)) {
663                 return NULL;
664         }
665
666         if (!(callerid = ast_escape_c_alloc(
667                       ast_describe_caller_presentation(new_snapshot->caller_pres)))) {
668                 return NULL;
669         }
670
671         res = ast_manager_event_blob_create(
672                 EVENT_FLAG_CALL, "NewCallerid",
673                 "CID-CallingPres: %d (%s)\r\n",
674                 new_snapshot->caller_pres,
675                 callerid);
676
677         ast_free(callerid);
678         return res;
679 }
680
681 static struct ast_manager_event_blob *channel_new_connected_line(
682         struct ast_channel_snapshot *old_snapshot,
683         struct ast_channel_snapshot *new_snapshot)
684 {
685         /* No NewConnectedLine event on cache clear or first event */
686         if (!old_snapshot || !new_snapshot) {
687                 return NULL;
688         }
689
690         if (ast_channel_snapshot_connected_line_equal(old_snapshot, new_snapshot)) {
691                 return NULL;
692         }
693
694         return ast_manager_event_blob_create(
695                 EVENT_FLAG_CALL, "NewConnectedLine", "%s", "");
696 }
697
698 static struct ast_manager_event_blob *channel_new_accountcode(
699         struct ast_channel_snapshot *old_snapshot,
700         struct ast_channel_snapshot *new_snapshot)
701 {
702         if (!old_snapshot || !new_snapshot) {
703                 return NULL;
704         }
705
706         if (!strcmp(old_snapshot->accountcode, new_snapshot->accountcode)) {
707                 return NULL;
708         }
709
710         return ast_manager_event_blob_create(
711                 EVENT_FLAG_CALL, "NewAccountCode",
712                 "OldAccountCode: %s\r\n", old_snapshot->accountcode);
713 }
714
715 channel_snapshot_monitor channel_monitors[] = {
716         channel_state_change,
717         channel_newexten,
718         channel_new_callerid,
719         channel_new_accountcode,
720         channel_new_connected_line,
721 };
722
723 static void channel_snapshot_update(void *data, struct stasis_subscription *sub,
724                                     struct stasis_message *message)
725 {
726         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
727         struct stasis_cache_update *update;
728         struct ast_channel_snapshot *old_snapshot;
729         struct ast_channel_snapshot *new_snapshot;
730         size_t i;
731
732         update = stasis_message_data(message);
733
734         ast_assert(ast_channel_snapshot_type() == update->type);
735
736         old_snapshot = stasis_message_data(update->old_snapshot);
737         new_snapshot = stasis_message_data(update->new_snapshot);
738
739         for (i = 0; i < ARRAY_LEN(channel_monitors); ++i) {
740                 RAII_VAR(struct ast_manager_event_blob *, ev, NULL, ao2_cleanup);
741                 ev = channel_monitors[i](old_snapshot, new_snapshot);
742
743                 if (!ev) {
744                         continue;
745                 }
746
747                 /* If we haven't already, build the channel event string */
748                 if (!channel_event_string) {
749                         channel_event_string =
750                                 ast_manager_build_channel_state_string(new_snapshot);
751                         if (!channel_event_string) {
752                                 return;
753                         }
754                 }
755
756                 manager_event(ev->event_flags, ev->manager_event, "%s%s",
757                         ast_str_buffer(channel_event_string),
758                         ev->extra_fields);
759         }
760 }
761
762 static void publish_basic_channel_event(const char *event, int class, struct ast_channel_snapshot *snapshot)
763 {
764         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
765
766         channel_event_string = ast_manager_build_channel_state_string(snapshot);
767         if (!channel_event_string) {
768                 return;
769         }
770
771         manager_event(class, event,
772                 "%s",
773                 ast_str_buffer(channel_event_string));
774 }
775
776 static void channel_hangup_request_cb(void *data,
777         struct stasis_subscription *sub,
778         struct stasis_message *message)
779 {
780         struct ast_channel_blob *obj = stasis_message_data(message);
781         struct ast_str *extra;
782         struct ast_str *channel_event_string;
783         struct ast_json *cause;
784         int is_soft;
785         char *manager_event = "HangupRequest";
786
787         if (!obj->snapshot) {
788                 /* No snapshot?  Likely an earlier allocation failure creating it. */
789                 return;
790         }
791
792         extra = ast_str_create(20);
793         if (!extra) {
794                 return;
795         }
796
797         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
798         if (!channel_event_string) {
799                 ast_free(extra);
800                 return;
801         }
802
803         cause = ast_json_object_get(obj->blob, "cause");
804         if (cause) {
805                 ast_str_append(&extra, 0,
806                         "Cause: %jd\r\n",
807                         ast_json_integer_get(cause));
808         }
809
810         is_soft = ast_json_is_true(ast_json_object_get(obj->blob, "soft"));
811         if (is_soft) {
812                 manager_event = "SoftHangupRequest";
813         }
814
815         manager_event(EVENT_FLAG_CALL, manager_event,
816                 "%s%s",
817                 ast_str_buffer(channel_event_string),
818                 ast_str_buffer(extra));
819
820         ast_free(channel_event_string);
821         ast_free(extra);
822 }
823
824 static void channel_chanspy_stop_cb(void *data, struct stasis_subscription *sub,
825                 struct stasis_message *message)
826 {
827         RAII_VAR(struct ast_str *, spyer_channel_string, NULL, ast_free);
828         struct ast_channel_snapshot *spyer;
829         struct ast_multi_channel_blob *payload = stasis_message_data(message);
830
831         spyer = ast_multi_channel_blob_get_channel(payload, "spyer_channel");
832         if (!spyer) {
833                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyer channel!\n");
834                 return;
835         }
836
837         spyer_channel_string = ast_manager_build_channel_state_string_prefix(spyer, "Spyer");
838         if (!spyer_channel_string) {
839                 return;
840         }
841
842         manager_event(EVENT_FLAG_CALL, "ChanSpyStop",
843                       "%s",
844                       ast_str_buffer(spyer_channel_string));
845 }
846
847 static void channel_chanspy_start_cb(void *data, struct stasis_subscription *sub,
848                 struct stasis_message *message)
849 {
850         RAII_VAR(struct ast_str *, spyer_channel_string, NULL, ast_free);
851         RAII_VAR(struct ast_str *, spyee_channel_string, NULL, ast_free);
852         struct ast_channel_snapshot *spyer;
853         struct ast_channel_snapshot *spyee;
854         struct ast_multi_channel_blob *payload = stasis_message_data(message);
855
856         spyer = ast_multi_channel_blob_get_channel(payload, "spyer_channel");
857         if (!spyer) {
858                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyer channel!\n");
859                 return;
860         }
861         spyee = ast_multi_channel_blob_get_channel(payload, "spyee_channel");
862         if (!spyee) {
863                 ast_log(AST_LOG_WARNING, "Received ChanSpy Start event with no spyee channel!\n");
864                 return;
865         }
866
867         spyer_channel_string = ast_manager_build_channel_state_string_prefix(spyer, "Spyer");
868         if (!spyer_channel_string) {
869                 return;
870         }
871         spyee_channel_string = ast_manager_build_channel_state_string_prefix(spyee, "Spyee");
872         if (!spyee_channel_string) {
873                 return;
874         }
875
876         manager_event(EVENT_FLAG_CALL, "ChanSpyStart",
877                       "%s%s",
878                       ast_str_buffer(spyer_channel_string),
879                       ast_str_buffer(spyee_channel_string));
880 }
881
882 static void channel_dtmf_begin_cb(void *data, struct stasis_subscription *sub,
883         struct stasis_message *message)
884 {
885         struct ast_channel_blob *obj = stasis_message_data(message);
886         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
887         const char *digit =
888                 ast_json_string_get(ast_json_object_get(obj->blob, "digit"));
889         const char *direction =
890                 ast_json_string_get(ast_json_object_get(obj->blob, "direction"));
891
892         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
893
894         if (!channel_event_string) {
895                 return;
896         }
897
898         /*** DOCUMENTATION
899                 <managerEventInstance>
900                         <synopsis>Raised when a DTMF digit has started on a channel.</synopsis>
901                                 <syntax>
902                                         <channel_snapshot/>
903                                         <parameter name="Digit">
904                                                 <para>DTMF digit received or transmitted (0-9, A-E, # or *</para>
905                                         </parameter>
906                                         <parameter name="Direction">
907                                                 <enumlist>
908                                                         <enum name="Received"/>
909                                                         <enum name="Sent"/>
910                                                 </enumlist>
911                                         </parameter>
912                                 </syntax>
913                                 <see-also>
914                                         <ref type="managerEvent">DTMFEnd</ref>
915                                 </see-also>
916                 </managerEventInstance>
917         ***/
918         manager_event(EVENT_FLAG_DTMF, "DTMFBegin",
919                 "%s"
920                 "Digit: %s\r\n"
921                 "Direction: %s\r\n",
922                 ast_str_buffer(channel_event_string),
923                 digit, direction);
924 }
925
926 static void channel_dtmf_end_cb(void *data, struct stasis_subscription *sub,
927         struct stasis_message *message)
928 {
929         struct ast_channel_blob *obj = stasis_message_data(message);
930         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
931         const char *digit =
932                 ast_json_string_get(ast_json_object_get(obj->blob, "digit"));
933         const char *direction =
934                 ast_json_string_get(ast_json_object_get(obj->blob, "direction"));
935         long duration_ms =
936                 ast_json_integer_get(ast_json_object_get(obj->blob, "duration_ms"));
937
938         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
939
940         if (!channel_event_string) {
941                 return;
942         }
943
944         /*** DOCUMENTATION
945                 <managerEventInstance>
946                         <synopsis>Raised when a DTMF digit has ended on a channel.</synopsis>
947                                 <syntax>
948                                         <channel_snapshot/>
949                                         <parameter name="Digit">
950                                                 <para>DTMF digit received or transmitted (0-9, A-E, # or *</para>
951                                         </parameter>
952                                         <parameter name="DurationMs">
953                                                 <para>Duration (in milliseconds) DTMF was sent/received</para>
954                                         </parameter>
955                                         <parameter name="Direction">
956                                                 <enumlist>
957                                                         <enum name="Received"/>
958                                                         <enum name="Sent"/>
959                                                 </enumlist>
960                                         </parameter>
961                                 </syntax>
962                                 <see-also>
963                                         <ref type="managerEvent">DTMFBegin</ref>
964                                 </see-also>
965                 </managerEventInstance>
966         ***/
967         manager_event(EVENT_FLAG_DTMF, "DTMFEnd",
968                 "%s"
969                 "Digit: %s\r\n"
970                 "DurationMs: %ld\r\n"
971                 "Direction: %s\r\n",
972                 ast_str_buffer(channel_event_string),
973                 digit, duration_ms, direction);
974 }
975
976 static void channel_hangup_handler_cb(void *data, struct stasis_subscription *sub,
977                 struct stasis_message *message)
978 {
979         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
980         struct ast_channel_blob *payload = stasis_message_data(message);
981         const char *action = ast_json_string_get(ast_json_object_get(payload->blob, "type"));
982         const char *handler = ast_json_string_get(ast_json_object_get(payload->blob, "handler"));
983         const char *event;
984
985         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
986
987         if (!channel_event_string) {
988                 return;
989         }
990
991         if (!strcmp(action, "type")) {
992                 event = "HangupHandlerRun";
993         } else if (!strcmp(action, "type")) {
994                 event = "HangupHandlerPop";
995         } else if (!strcmp(action, "type")) {
996                 event = "HangupHandlerPush";
997         } else {
998                 return;
999         }
1000         manager_event(EVENT_FLAG_DIALPLAN, event,
1001                 "%s"
1002                 "Handler: %s\r\n",
1003                 ast_str_buffer(channel_event_string),
1004                 handler);
1005 }
1006
1007 static void channel_fax_cb(void *data, struct stasis_subscription *sub,
1008                 struct stasis_message *message)
1009 {
1010         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
1011         RAII_VAR(struct ast_str *, event_buffer, ast_str_create(256), ast_free);
1012         struct ast_channel_blob *payload = stasis_message_data(message);
1013         const char *type = ast_json_string_get(ast_json_object_get(payload->blob, "type"));
1014         struct ast_json *operation = ast_json_object_get(payload->blob, "operation");
1015         struct ast_json *status = ast_json_object_get(payload->blob, "status");
1016         struct ast_json *local_station_id = ast_json_object_get(payload->blob, "local_station_id");
1017         struct ast_json *remote_station_id = ast_json_object_get(payload->blob, "remote_station_id");
1018         struct ast_json *fax_pages = ast_json_object_get(payload->blob, "fax_pages");
1019         struct ast_json *fax_resolution = ast_json_object_get(payload->blob, "fax_resolution");
1020         struct ast_json *fax_bitrate = ast_json_object_get(payload->blob, "fax_bitrate");
1021         struct ast_json *filenames = ast_json_object_get(payload->blob, "filenames");
1022         const char *event;
1023         size_t array_len;
1024         size_t i;
1025
1026         if (!event_buffer) {
1027                 return;
1028         }
1029
1030         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
1031         if (!channel_event_string) {
1032                 return;
1033         }
1034
1035         if (!strcmp(type, "status")) {
1036                 event = "FAXStatus";
1037         } else if (!strcmp(type, "receive")) {
1038                 event = "ReceiveFAX";
1039         } else if (!strcmp(type, "send")) {
1040                 event = "SendFAX";
1041         } else {
1042                 return;
1043         }
1044
1045         if (operation) {
1046                 ast_str_append(&event_buffer, 0, "Operation: %s\r\n", ast_json_string_get(operation));
1047         }
1048         if (status) {
1049                 ast_str_append(&event_buffer, 0, "Status: %s\r\n", ast_json_string_get(status));
1050         }
1051         if (local_station_id) {
1052                 ast_str_append(&event_buffer, 0, "LocalStationID: %s\r\n", ast_json_string_get(local_station_id));
1053         }
1054         if (remote_station_id) {
1055                 ast_str_append(&event_buffer, 0, "RemoteStationID: %s\r\n", ast_json_string_get(remote_station_id));
1056         }
1057         if (fax_pages) {
1058                 ast_str_append(&event_buffer, 0, "PagesTransferred: %s\r\n", ast_json_string_get(fax_pages));
1059         }
1060         if (fax_resolution) {
1061                 ast_str_append(&event_buffer, 0, "Resolution: %s\r\n", ast_json_string_get(fax_resolution));
1062         }
1063         if (fax_bitrate) {
1064                 ast_str_append(&event_buffer, 0, "TransferRate: %s\r\n", ast_json_string_get(fax_bitrate));
1065         }
1066         if (filenames) {
1067                 array_len = ast_json_array_size(filenames);
1068                 for (i = 0; i < array_len; i++) {
1069                         ast_str_append(&event_buffer, 0, "FileName: %s\r\n", ast_json_string_get(ast_json_array_get(filenames, i)));
1070                 }
1071         }
1072
1073         manager_event(EVENT_FLAG_CALL, event,
1074                 "%s"
1075                 "%s",
1076                 ast_str_buffer(channel_event_string),
1077                 ast_str_buffer(event_buffer));
1078 }
1079
1080 static void channel_moh_start_cb(void *data, struct stasis_subscription *sub,
1081                 struct stasis_message *message)
1082 {
1083         struct ast_channel_blob *payload = stasis_message_data(message);
1084         struct ast_json *blob = payload->blob;
1085         RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
1086
1087         channel_event_string = ast_manager_build_channel_state_string(payload->snapshot);
1088         if (!channel_event_string) {
1089                 return;
1090         }
1091
1092         manager_event(EVENT_FLAG_CALL, "MusicOnHoldStart",
1093                 "%s"
1094                 "Class: %s\r\n",
1095                 ast_str_buffer(channel_event_string),
1096                 ast_json_string_get(ast_json_object_get(blob, "class")));
1097
1098 }
1099
1100 static void channel_moh_stop_cb(void *data, struct stasis_subscription *sub,
1101                 struct stasis_message *message)
1102 {
1103         struct ast_channel_blob *payload = stasis_message_data(message);
1104
1105         publish_basic_channel_event("MusicOnHoldStop", EVENT_FLAG_CALL, payload->snapshot);
1106 }
1107
1108 static void channel_monitor_start_cb(void *data, struct stasis_subscription *sub,
1109                 struct stasis_message *message)
1110 {
1111         struct ast_channel_blob *payload = stasis_message_data(message);
1112
1113         publish_basic_channel_event("MonitorStart", EVENT_FLAG_CALL, payload->snapshot);
1114 }
1115
1116 static void channel_monitor_stop_cb(void *data, struct stasis_subscription *sub,
1117                 struct stasis_message *message)
1118 {
1119         struct ast_channel_blob *payload = stasis_message_data(message);
1120
1121         publish_basic_channel_event("MonitorStop", EVENT_FLAG_CALL, payload->snapshot);
1122 }
1123
1124 static int dial_status_end(const char *dialstatus)
1125 {
1126         return (strcmp(dialstatus, "RINGING") &&
1127                         strcmp(dialstatus, "PROCEEDING") &&
1128                         strcmp(dialstatus, "PROGRESS"));
1129 }
1130
1131 /*!
1132  * \brief Callback processing messages for channel dialing
1133  */
1134 static void channel_dial_cb(void *data, struct stasis_subscription *sub,
1135         struct stasis_message *message)
1136 {
1137         struct ast_multi_channel_blob *obj = stasis_message_data(message);
1138         const char *dialstatus;
1139         const char *dialstring;
1140         const char *forward;
1141         struct ast_channel_snapshot *caller;
1142         struct ast_channel_snapshot *peer;
1143         RAII_VAR(struct ast_str *, caller_event_string, NULL, ast_free);
1144         RAII_VAR(struct ast_str *, peer_event_string, NULL, ast_free);
1145
1146         caller = ast_multi_channel_blob_get_channel(obj, "caller");
1147         peer = ast_multi_channel_blob_get_channel(obj, "peer");
1148
1149         /* Peer is required - otherwise, who are we dialing? */
1150         ast_assert(peer != NULL);
1151         peer_event_string = ast_manager_build_channel_state_string_prefix(peer, "Dest");
1152         if (!peer_event_string) {
1153                 return;
1154         }
1155
1156         if (caller && !(caller_event_string = ast_manager_build_channel_state_string(caller))) {
1157                 return;
1158         }
1159
1160         dialstatus = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstatus"));
1161         dialstring = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "dialstring"));
1162         forward = ast_json_string_get(ast_json_object_get(ast_multi_channel_blob_get_json(obj), "forward"));
1163         if (ast_strlen_zero(dialstatus)) {
1164                 manager_event(EVENT_FLAG_CALL, "DialBegin",
1165                                 "%s"
1166                                 "%s"
1167                                 "DialString: %s\r\n",
1168                                 caller_event_string ? ast_str_buffer(caller_event_string) : "",
1169                                 ast_str_buffer(peer_event_string),
1170                                 S_OR(dialstring, "unknown"));
1171         } else {
1172                 int forwarded = !ast_strlen_zero(forward);
1173
1174                 manager_event(EVENT_FLAG_CALL, dial_status_end(dialstatus) ? "DialEnd" : "DialState",
1175                                 "%s"
1176                                 "%s"
1177                                 "%s%s%s"
1178                                 "DialStatus: %s\r\n",
1179                                 caller_event_string ? ast_str_buffer(caller_event_string) : "",
1180                                 ast_str_buffer(peer_event_string),
1181                                 forwarded ? "Forward: " : "", S_OR(forward, ""), forwarded ? "\r\n" : "",
1182                                 S_OR(dialstatus, "unknown"));
1183         }
1184
1185 }
1186
1187 static void channel_hold_cb(void *data, struct stasis_subscription *sub,
1188         struct stasis_message *message)
1189 {
1190         struct ast_channel_blob *obj = stasis_message_data(message);
1191         struct ast_str *musicclass_string = ast_str_create(32);
1192         struct ast_str *channel_event_string;
1193
1194         if (!musicclass_string) {
1195                 return;
1196         }
1197
1198         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
1199         if (!channel_event_string) {
1200                 ast_free(musicclass_string);
1201                 return;
1202         }
1203
1204         if (obj->blob) {
1205                 const char *musicclass;
1206
1207                 musicclass = ast_json_string_get(ast_json_object_get(obj->blob, "musicclass"));
1208
1209                 if (!ast_strlen_zero(musicclass)) {
1210                         ast_str_set(&musicclass_string, 0, "MusicClass: %s\r\n", musicclass);
1211                 }
1212         }
1213
1214         manager_event(EVENT_FLAG_CALL, "Hold",
1215                 "%s"
1216                 "%s",
1217                 ast_str_buffer(channel_event_string),
1218                 ast_str_buffer(musicclass_string));
1219
1220         ast_free(musicclass_string);
1221         ast_free(channel_event_string);
1222 }
1223
1224 static void channel_unhold_cb(void *data, struct stasis_subscription *sub,
1225         struct stasis_message *message)
1226 {
1227         struct ast_channel_blob *obj = stasis_message_data(message);
1228         struct ast_str *channel_event_string;
1229
1230         channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
1231         if (!channel_event_string) {
1232                 return;
1233         }
1234
1235         manager_event(EVENT_FLAG_CALL, "Unhold",
1236                 "%s",
1237                 ast_str_buffer(channel_event_string));
1238
1239         ast_free(channel_event_string);
1240 }
1241
1242 static void manager_channels_shutdown(void)
1243 {
1244         stasis_forward_cancel(topic_forwarder);
1245         topic_forwarder = NULL;
1246 }
1247
1248 int manager_channels_init(void)
1249 {
1250         int ret = 0;
1251         struct stasis_topic *manager_topic;
1252         struct stasis_topic *channel_topic;
1253         struct stasis_message_router *message_router;
1254
1255         manager_topic = ast_manager_get_topic();
1256         if (!manager_topic) {
1257                 return -1;
1258         }
1259         message_router = ast_manager_get_message_router();
1260         if (!message_router) {
1261                 return -1;
1262         }
1263         channel_topic = ast_channel_topic_all_cached();
1264         if (!channel_topic) {
1265                 return -1;
1266         }
1267
1268         topic_forwarder = stasis_forward_all(channel_topic, manager_topic);
1269         if (!topic_forwarder) {
1270                 return -1;
1271         }
1272
1273         ast_register_cleanup(manager_channels_shutdown);
1274
1275         ret |= stasis_message_router_add_cache_update(message_router,
1276                 ast_channel_snapshot_type(), channel_snapshot_update, NULL);
1277
1278         ret |= stasis_message_router_add(message_router,
1279                 ast_channel_dtmf_begin_type(), channel_dtmf_begin_cb, NULL);
1280
1281         ret |= stasis_message_router_add(message_router,
1282                 ast_channel_dtmf_end_type(), channel_dtmf_end_cb, NULL);
1283
1284         ret |= stasis_message_router_add(message_router,
1285                 ast_channel_hangup_request_type(), channel_hangup_request_cb,
1286                 NULL);
1287
1288         ret |= stasis_message_router_add(message_router,
1289                 ast_channel_dial_type(), channel_dial_cb, NULL);
1290
1291         ret |= stasis_message_router_add(message_router,
1292                 ast_channel_hold_type(), channel_hold_cb, NULL);
1293
1294         ret |= stasis_message_router_add(message_router,
1295                 ast_channel_unhold_type(), channel_unhold_cb, NULL);
1296
1297         ret |= stasis_message_router_add(message_router,
1298                 ast_channel_fax_type(), channel_fax_cb, NULL);
1299
1300         ret |= stasis_message_router_add(message_router,
1301                 ast_channel_chanspy_start_type(), channel_chanspy_start_cb,
1302                 NULL);
1303
1304         ret |= stasis_message_router_add(message_router,
1305                 ast_channel_chanspy_stop_type(), channel_chanspy_stop_cb, NULL);
1306
1307         ret |= stasis_message_router_add(message_router,
1308                 ast_channel_hangup_handler_type(), channel_hangup_handler_cb,
1309                 NULL);
1310
1311         ret |= stasis_message_router_add(message_router,
1312                 ast_channel_moh_start_type(), channel_moh_start_cb, NULL);
1313
1314         ret |= stasis_message_router_add(message_router,
1315                 ast_channel_moh_stop_type(), channel_moh_stop_cb, NULL);
1316
1317         ret |= stasis_message_router_add(message_router,
1318                 ast_channel_monitor_start_type(), channel_monitor_start_cb,
1319                 NULL);
1320
1321         ret |= stasis_message_router_add(message_router,
1322                 ast_channel_monitor_stop_type(), channel_monitor_stop_cb, NULL);
1323
1324         /* If somehow we failed to add any routes, just shut down the whole
1325          * thing and fail it.
1326          */
1327         if (ret) {
1328                 manager_channels_shutdown();
1329                 return -1;
1330         }
1331
1332         return 0;
1333 }