app_dial.c: Factor out a connected line update routine.
[asterisk/asterisk.git] / apps / app_dial.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 1999 - 2012, Digium, Inc.
5  *
6  * Mark Spencer <markster@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 dial() & retrydial() - Trivial application to dial a channel and send an URL on answer
22  *
23  * \author Mark Spencer <markster@digium.com>
24  *
25  * \ingroup applications
26  */
27
28 /*** MODULEINFO
29         <support_level>core</support_level>
30  ***/
31
32
33 #include "asterisk.h"
34
35 ASTERISK_REGISTER_FILE()
36
37 #include <sys/time.h>
38 #include <sys/signal.h>
39 #include <sys/stat.h>
40 #include <netinet/in.h>
41
42 #include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
43 #include "asterisk/lock.h"
44 #include "asterisk/file.h"
45 #include "asterisk/channel.h"
46 #include "asterisk/pbx.h"
47 #include "asterisk/module.h"
48 #include "asterisk/translate.h"
49 #include "asterisk/say.h"
50 #include "asterisk/config.h"
51 #include "asterisk/features.h"
52 #include "asterisk/musiconhold.h"
53 #include "asterisk/callerid.h"
54 #include "asterisk/utils.h"
55 #include "asterisk/app.h"
56 #include "asterisk/causes.h"
57 #include "asterisk/rtp_engine.h"
58 #include "asterisk/manager.h"
59 #include "asterisk/privacy.h"
60 #include "asterisk/stringfields.h"
61 #include "asterisk/dsp.h"
62 #include "asterisk/aoc.h"
63 #include "asterisk/ccss.h"
64 #include "asterisk/indications.h"
65 #include "asterisk/framehook.h"
66 #include "asterisk/dial.h"
67 #include "asterisk/stasis_channels.h"
68 #include "asterisk/bridge_after.h"
69 #include "asterisk/features_config.h"
70 #include "asterisk/max_forwards.h"
71
72 /*** DOCUMENTATION
73         <application name="Dial" language="en_US">
74                 <synopsis>
75                         Attempt to connect to another device or endpoint and bridge the call.
76                 </synopsis>
77                 <syntax>
78                         <parameter name="Technology/Resource" required="true" argsep="&amp;">
79                                 <argument name="Technology/Resource" required="true">
80                                         <para>Specification of the device(s) to dial.  These must be in the format of
81                                         <literal>Technology/Resource</literal>, where <replaceable>Technology</replaceable>
82                                         represents a particular channel driver, and <replaceable>Resource</replaceable>
83                                         represents a resource available to that particular channel driver.</para>
84                                 </argument>
85                                 <argument name="Technology2/Resource2" required="false" multiple="true">
86                                         <para>Optional extra devices to dial in parallel</para>
87                                         <para>If you need more then one enter them as
88                                         Technology2/Resource2&amp;Technology3/Resourse3&amp;.....</para>
89                                 </argument>
90                         </parameter>
91                         <parameter name="timeout" required="false">
92                                 <para>Specifies the number of seconds we attempt to dial the specified devices</para>
93                                 <para>If not specified, this defaults to 136 years.</para>
94                         </parameter>
95                         <parameter name="options" required="false">
96                                 <optionlist>
97                                 <option name="A">
98                                         <argument name="x" required="true">
99                                                 <para>The file to play to the called party</para>
100                                         </argument>
101                                         <para>Play an announcement to the called party, where <replaceable>x</replaceable> is the prompt to be played</para>
102                                 </option>
103                                 <option name="a">
104                                         <para>Immediately answer the calling channel when the called channel answers in
105                                         all cases. Normally, the calling channel is answered when the called channel
106                                         answers, but when options such as A() and M() are used, the calling channel is
107                                         not answered until all actions on the called channel (such as playing an
108                                         announcement) are completed.  This option can be used to answer the calling
109                                         channel before doing anything on the called channel. You will rarely need to use
110                                         this option, the default behavior is adequate in most cases.</para>
111                                 </option>
112                                 <option name="b" argsep="^">
113                                         <para>Before initiating an outgoing call, Gosub to the specified
114                                         location using the newly created channel.  The Gosub will be
115                                         executed for each destination channel.</para>
116                                         <argument name="context" required="false" />
117                                         <argument name="exten" required="false" />
118                                         <argument name="priority" required="true" hasparams="optional" argsep="^">
119                                                 <argument name="arg1" multiple="true" required="true" />
120                                                 <argument name="argN" />
121                                         </argument>
122                                 </option>
123                                 <option name="B" argsep="^">
124                                         <para>Before initiating the outgoing call(s), Gosub to the specified
125                                         location using the current channel.</para>
126                                         <argument name="context" required="false" />
127                                         <argument name="exten" required="false" />
128                                         <argument name="priority" required="true" hasparams="optional" argsep="^">
129                                                 <argument name="arg1" multiple="true" required="true" />
130                                                 <argument name="argN" />
131                                         </argument>
132                                 </option>
133                                 <option name="C">
134                                         <para>Reset the call detail record (CDR) for this call.</para>
135                                 </option>
136                                 <option name="c">
137                                         <para>If the Dial() application cancels this call, always set HANGUPCAUSE to 'answered elsewhere'</para>
138                                 </option>
139                                 <option name="d">
140                                         <para>Allow the calling user to dial a 1 digit extension while waiting for
141                                         a call to be answered. Exit to that extension if it exists in the
142                                         current context, or the context defined in the <variable>EXITCONTEXT</variable> variable,
143                                         if it exists.</para>
144                                         <note>
145                                                 <para>Many SIP and ISDN phones cannot send DTMF digits until the call is
146                                                 connected.  If you wish to use this option with these phones, you
147                                                 can use the <literal>Answer</literal> application before dialing.</para>
148                                         </note>
149                                 </option>
150                                 <option name="D" argsep=":">
151                                         <argument name="called" />
152                                         <argument name="calling" />
153                                         <argument name="progress" />
154                                         <para>Send the specified DTMF strings <emphasis>after</emphasis> the called
155                                         party has answered, but before the call gets bridged.  The
156                                         <replaceable>called</replaceable> DTMF string is sent to the called party, and the
157                                         <replaceable>calling</replaceable> DTMF string is sent to the calling party.  Both arguments
158                                         can be used alone.  If <replaceable>progress</replaceable> is specified, its DTMF is sent
159                                         to the called party immediately after receiving a PROGRESS message.</para>
160                                         <para>See SendDTMF for valid digits.</para>
161                                 </option>
162                                 <option name="e">
163                                         <para>Execute the <literal>h</literal> extension for peer after the call ends</para>
164                                 </option>
165                                 <option name="f">
166                                         <argument name="x" required="false" />
167                                         <para>If <replaceable>x</replaceable> is not provided, force the CallerID sent on a call-forward or
168                                         deflection to the dialplan extension of this Dial() using a dialplan <literal>hint</literal>.
169                                         For example, some PSTNs do not allow CallerID to be set to anything
170                                         other than the numbers assigned to you.
171                                         If <replaceable>x</replaceable> is provided, force the CallerID sent to <replaceable>x</replaceable>.</para>
172                                 </option>
173                                 <option name="F" argsep="^">
174                                         <argument name="context" required="false" />
175                                         <argument name="exten" required="false" />
176                                         <argument name="priority" required="true" />
177                                         <para>When the caller hangs up, transfer the <emphasis>called</emphasis> party
178                                         to the specified destination and <emphasis>start</emphasis> execution at that location.</para>
179                                         <note>
180                                                 <para>Any channel variables you want the called channel to inherit from the caller channel must be
181                                                 prefixed with one or two underbars ('_').</para>
182                                         </note>
183                                 </option>
184                                 <option name="F">
185                                         <para>When the caller hangs up, transfer the <emphasis>called</emphasis> party to the next priority of the current extension
186                                         and <emphasis>start</emphasis> execution at that location.</para>
187                                         <note>
188                                                 <para>Any channel variables you want the called channel to inherit from the caller channel must be
189                                                 prefixed with one or two underbars ('_').</para>
190                                         </note>
191                                         <note>
192                                                 <para>Using this option from a Macro() or GoSub() might not make sense as there would be no return points.</para>
193                                         </note>
194                                 </option>
195                                 <option name="g">
196                                         <para>Proceed with dialplan execution at the next priority in the current extension if the
197                                         destination channel hangs up.</para>
198                                 </option>
199                                 <option name="G" argsep="^">
200                                         <argument name="context" required="false" />
201                                         <argument name="exten" required="false" />
202                                         <argument name="priority" required="true" />
203                                         <para>If the call is answered, transfer the calling party to
204                                         the specified <replaceable>priority</replaceable> and the called party to the specified
205                                         <replaceable>priority</replaceable> plus one.</para>
206                                         <note>
207                                                 <para>You cannot use any additional action post answer options in conjunction with this option.</para>
208                                         </note>
209                                 </option>
210                                 <option name="h">
211                                         <para>Allow the called party to hang up by sending the DTMF sequence
212                                         defined for disconnect in <filename>features.conf</filename>.</para>
213                                 </option>
214                                 <option name="H">
215                                         <para>Allow the calling party to hang up by sending the DTMF sequence
216                                         defined for disconnect in <filename>features.conf</filename>.</para>
217                                         <note>
218                                                 <para>Many SIP and ISDN phones cannot send DTMF digits until the call is
219                                                 connected.  If you wish to allow DTMF disconnect before the dialed
220                                                 party answers with these phones, you can use the <literal>Answer</literal>
221                                                 application before dialing.</para>
222                                         </note>
223                                 </option>
224                                 <option name="i">
225                                         <para>Asterisk will ignore any forwarding requests it may receive on this dial attempt.</para>
226                                 </option>
227                                 <option name="I">
228                                         <para>Asterisk will ignore any connected line update requests or any redirecting party
229                                         update requests it may receive on this dial attempt.</para>
230                                 </option>
231                                 <option name="k">
232                                         <para>Allow the called party to enable parking of the call by sending
233                                         the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
234                                 </option>
235                                 <option name="K">
236                                         <para>Allow the calling party to enable parking of the call by sending
237                                         the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
238                                 </option>
239                                 <option name="L" argsep=":">
240                                         <argument name="x" required="true">
241                                                 <para>Maximum call time, in milliseconds</para>
242                                         </argument>
243                                         <argument name="y">
244                                                 <para>Warning time, in milliseconds</para>
245                                         </argument>
246                                         <argument name="z">
247                                                 <para>Repeat time, in milliseconds</para>
248                                         </argument>
249                                         <para>Limit the call to <replaceable>x</replaceable> milliseconds. Play a warning when <replaceable>y</replaceable> milliseconds are
250                                         left. Repeat the warning every <replaceable>z</replaceable> milliseconds until time expires.</para>
251                                         <para>This option is affected by the following variables:</para>
252                                         <variablelist>
253                                                 <variable name="LIMIT_PLAYAUDIO_CALLER">
254                                                         <value name="yes" default="true" />
255                                                         <value name="no" />
256                                                         <para>If set, this variable causes Asterisk to play the prompts to the caller.</para>
257                                                 </variable>
258                                                 <variable name="LIMIT_PLAYAUDIO_CALLEE">
259                                                         <value name="yes" />
260                                                         <value name="no" default="true"/>
261                                                         <para>If set, this variable causes Asterisk to play the prompts to the callee.</para>
262                                                 </variable>
263                                                 <variable name="LIMIT_TIMEOUT_FILE">
264                                                         <value name="filename"/>
265                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play when the timeout is reached.
266                                                         If not set, the time remaining will be announced.</para>
267                                                 </variable>
268                                                 <variable name="LIMIT_CONNECT_FILE">
269                                                         <value name="filename"/>
270                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play when the call begins.
271                                                         If not set, the time remaining will be announced.</para>
272                                                 </variable>
273                                                 <variable name="LIMIT_WARNING_FILE">
274                                                         <value name="filename"/>
275                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play as
276                                                         a warning when time <replaceable>x</replaceable> is reached. If not set, the time remaining will be announced.</para>
277                                                 </variable>
278                                         </variablelist>
279                                 </option>
280                                 <option name="m">
281                                         <argument name="class" required="false"/>
282                                         <para>Provide hold music to the calling party until a requested
283                                         channel answers. A specific music on hold <replaceable>class</replaceable>
284                                         (as defined in <filename>musiconhold.conf</filename>) can be specified.</para>
285                                 </option>
286                                 <option name="M" argsep="^">
287                                         <argument name="macro" required="true">
288                                                 <para>Name of the macro that should be executed.</para>
289                                         </argument>
290                                         <argument name="arg" multiple="true">
291                                                 <para>Macro arguments</para>
292                                         </argument>
293                                         <para>Execute the specified <replaceable>macro</replaceable> for the <emphasis>called</emphasis> channel
294                                         before connecting to the calling channel. Arguments can be specified to the Macro
295                                         using <literal>^</literal> as a delimiter. The macro can set the variable
296                                         <variable>MACRO_RESULT</variable> to specify the following actions after the macro is
297                                         finished executing:</para>
298                                         <variablelist>
299                                                 <variable name="MACRO_RESULT">
300                                                         <para>If set, this action will be taken after the macro finished executing.</para>
301                                                         <value name="ABORT">
302                                                                 Hangup both legs of the call
303                                                         </value>
304                                                         <value name="CONGESTION">
305                                                                 Behave as if line congestion was encountered
306                                                         </value>
307                                                         <value name="BUSY">
308                                                                 Behave as if a busy signal was encountered
309                                                         </value>
310                                                         <value name="CONTINUE">
311                                                                 Hangup the called party and allow the calling party to continue dialplan execution at the next priority
312                                                         </value>
313                                                         <value name="GOTO:[[&lt;context&gt;^]&lt;exten&gt;^]&lt;priority&gt;">
314                                                                 Transfer the call to the specified destination.
315                                                         </value>
316                                                 </variable>
317                                         </variablelist>
318                                         <note>
319                                                 <para>You cannot use any additional action post answer options in conjunction
320                                                 with this option. Also, pbx services are run on the peer (called) channel,
321                                                 so you will not be able to set timeouts via the TIMEOUT() function in this macro.</para>
322                                         </note>
323                                         <warning><para>Be aware of the limitations that macros have, specifically with regards to use of
324                                         the <literal>WaitExten</literal> application. For more information, see the documentation for
325                                         Macro()</para></warning>
326                                 </option>
327                                 <option name="n">
328                                         <argument name="delete">
329                                                 <para>With <replaceable>delete</replaceable> either not specified or set to <literal>0</literal>,
330                                                 the recorded introduction will not be deleted if the caller hangs up while the remote party has not
331                                                 yet answered.</para>
332                                                 <para>With <replaceable>delete</replaceable> set to <literal>1</literal>, the introduction will
333                                                 always be deleted.</para>
334                                         </argument>
335                                         <para>This option is a modifier for the call screening/privacy mode. (See the
336                                         <literal>p</literal> and <literal>P</literal> options.) It specifies
337                                         that no introductions are to be saved in the <directory>priv-callerintros</directory>
338                                         directory.</para>
339                                 </option>
340                                 <option name="N">
341                                         <para>This option is a modifier for the call screening/privacy mode. It specifies
342                                         that if Caller*ID is present, do not screen the call.</para>
343                                 </option>
344                                 <option name="o">
345                                         <argument name="x" required="false" />
346                                         <para>If <replaceable>x</replaceable> is not provided, specify that the CallerID that was present on the
347                                         <emphasis>calling</emphasis> channel be stored as the CallerID on the <emphasis>called</emphasis> channel.
348                                         This was the behavior of Asterisk 1.0 and earlier.
349                                         If <replaceable>x</replaceable> is provided, specify the CallerID stored on the <emphasis>called</emphasis> channel.
350                                         Note that o(${CALLERID(all)}) is similar to option o without the parameter.</para>
351                                 </option>
352                                 <option name="O">
353                                         <argument name="mode">
354                                                 <para>With <replaceable>mode</replaceable> either not specified or set to <literal>1</literal>,
355                                                 the originator hanging up will cause the phone to ring back immediately.</para>
356                                                 <para>With <replaceable>mode</replaceable> set to <literal>2</literal>, when the operator
357                                                 flashes the trunk, it will ring their phone back.</para>
358                                         </argument>
359                                         <para>Enables <emphasis>operator services</emphasis> mode.  This option only
360                                         works when bridging a DAHDI channel to another DAHDI channel
361                                         only. if specified on non-DAHDI interfaces, it will be ignored.
362                                         When the destination answers (presumably an operator services
363                                         station), the originator no longer has control of their line.
364                                         They may hang up, but the switch will not release their line
365                                         until the destination party (the operator) hangs up.</para>
366                                 </option>
367                                 <option name="p">
368                                         <para>This option enables screening mode. This is basically Privacy mode
369                                         without memory.</para>
370                                 </option>
371                                 <option name="P">
372                                         <argument name="x" />
373                                         <para>Enable privacy mode. Use <replaceable>x</replaceable> as the family/key in the AstDB database if
374                                         it is provided. The current extension is used if a database family/key is not specified.</para>
375                                 </option>
376                                 <option name="r">
377                                         <para>Default: Indicate ringing to the calling party, even if the called party isn't actually ringing. Pass no audio to the calling
378                                         party until the called channel has answered.</para>
379                                         <argument name="tone" required="false">
380                                                 <para>Indicate progress to calling party. Send audio 'tone' from the indications.conf tonezone currently in use.</para>
381                                         </argument>
382                                 </option>
383                                 <option name="R">
384                                         <para>Default: Indicate ringing to the calling party, even if the called party isn't actually ringing. 
385                                         Allow interruption of the ringback if early media is received on the channel.</para>
386                                 </option>
387                                 <option name="S">
388                                         <argument name="x" required="true" />
389                                         <para>Hang up the call <replaceable>x</replaceable> seconds <emphasis>after</emphasis> the called party has
390                                         answered the call.</para>
391                                 </option>
392                                 <option name="s">
393                                         <argument name="x" required="true" />
394                                         <para>Force the outgoing callerid tag parameter to be set to the string <replaceable>x</replaceable>.</para>
395                                         <para>Works with the f option.</para>
396                                 </option>
397                                 <option name="t">
398                                         <para>Allow the called party to transfer the calling party by sending the
399                                         DTMF sequence defined in <filename>features.conf</filename>. This setting does not perform policy enforcement on
400                                         transfers initiated by other methods.</para>
401                                 </option>
402                                 <option name="T">
403                                         <para>Allow the calling party to transfer the called party by sending the
404                                         DTMF sequence defined in <filename>features.conf</filename>. This setting does not perform policy enforcement on
405                                         transfers initiated by other methods.</para>
406                                 </option>
407                                 <option name="U" argsep="^">
408                                         <argument name="x" required="true">
409                                                 <para>Name of the subroutine to execute via Gosub</para>
410                                         </argument>
411                                         <argument name="arg" multiple="true" required="false">
412                                                 <para>Arguments for the Gosub routine</para>
413                                         </argument>
414                                         <para>Execute via Gosub the routine <replaceable>x</replaceable> for the <emphasis>called</emphasis> channel before connecting
415                                         to the calling channel. Arguments can be specified to the Gosub
416                                         using <literal>^</literal> as a delimiter. The Gosub routine can set the variable
417                                         <variable>GOSUB_RESULT</variable> to specify the following actions after the Gosub returns.</para>
418                                         <variablelist>
419                                                 <variable name="GOSUB_RESULT">
420                                                         <value name="ABORT">
421                                                                 Hangup both legs of the call.
422                                                         </value>
423                                                         <value name="CONGESTION">
424                                                                 Behave as if line congestion was encountered.
425                                                         </value>
426                                                         <value name="BUSY">
427                                                                 Behave as if a busy signal was encountered.
428                                                         </value>
429                                                         <value name="CONTINUE">
430                                                                 Hangup the called party and allow the calling party
431                                                                 to continue dialplan execution at the next priority.
432                                                         </value>
433                                                         <value name="GOTO:[[&lt;context&gt;^]&lt;exten&gt;^]&lt;priority&gt;">
434                                                                 Transfer the call to the specified destination.
435                                                         </value>
436                                                 </variable>
437                                         </variablelist>
438                                         <note>
439                                                 <para>You cannot use any additional action post answer options in conjunction
440                                                 with this option. Also, pbx services are run on the peer (called) channel,
441                                                 so you will not be able to set timeouts via the TIMEOUT() function in this routine.</para>
442                                         </note>
443                                 </option>
444                                 <option name="u">
445                                         <argument name = "x" required="true">
446                                                 <para>Force the outgoing callerid presentation indicator parameter to be set
447                                                 to one of the values passed in <replaceable>x</replaceable>:
448                                                 <literal>allowed_not_screened</literal>
449                                                 <literal>allowed_passed_screen</literal>
450                                                 <literal>allowed_failed_screen</literal>
451                                                 <literal>allowed</literal>
452                                                 <literal>prohib_not_screened</literal>
453                                                 <literal>prohib_passed_screen</literal>
454                                                 <literal>prohib_failed_screen</literal>
455                                                 <literal>prohib</literal>
456                                                 <literal>unavailable</literal></para>
457                                         </argument>
458                                         <para>Works with the f option.</para>
459                                 </option>
460                                 <option name="w">
461                                         <para>Allow the called party to enable recording of the call by sending
462                                         the DTMF sequence defined for one-touch recording in <filename>features.conf</filename>.</para>
463                                 </option>
464                                 <option name="W">
465                                         <para>Allow the calling party to enable recording of the call by sending
466                                         the DTMF sequence defined for one-touch recording in <filename>features.conf</filename>.</para>
467                                 </option>
468                                 <option name="x">
469                                         <para>Allow the called party to enable recording of the call by sending
470                                         the DTMF sequence defined for one-touch automixmonitor in <filename>features.conf</filename>.</para>
471                                 </option>
472                                 <option name="X">
473                                         <para>Allow the calling party to enable recording of the call by sending
474                                         the DTMF sequence defined for one-touch automixmonitor in <filename>features.conf</filename>.</para>
475                                 </option>
476                                 <option name="z">
477                                         <para>On a call forward, cancel any dial timeout which has been set for this call.</para>
478                                 </option>
479                                 </optionlist>
480                         </parameter>
481                         <parameter name="URL">
482                                 <para>The optional URL will be sent to the called party if the channel driver supports it.</para>
483                         </parameter>
484                 </syntax>
485                 <description>
486                         <para>This application will place calls to one or more specified channels. As soon
487                         as one of the requested channels answers, the originating channel will be
488                         answered, if it has not already been answered. These two channels will then
489                         be active in a bridged call. All other channels that were requested will then
490                         be hung up.</para>
491
492                         <para>Unless there is a timeout specified, the Dial application will wait
493                         indefinitely until one of the called channels answers, the user hangs up, or
494                         if all of the called channels are busy or unavailable. Dialplan executing will
495                         continue if no requested channels can be called, or if the timeout expires.
496                         This application will report normal termination if the originating channel
497                         hangs up, or if the call is bridged and either of the parties in the bridge
498                         ends the call.</para>
499                         <para>If the <variable>OUTBOUND_GROUP</variable> variable is set, all peer channels created by this
500                         application will be put into that group (as in Set(GROUP()=...).
501                         If the <variable>OUTBOUND_GROUP_ONCE</variable> variable is set, all peer channels created by this
502                         application will be put into that group (as in Set(GROUP()=...). Unlike <variable>OUTBOUND_GROUP</variable>,
503                         however, the variable will be unset after use.</para>
504
505                         <para>This application sets the following channel variables:</para>
506                         <variablelist>
507                                 <variable name="DIALEDTIME">
508                                         <para>This is the time from dialing a channel until when it is disconnected.</para>
509                                 </variable>
510                                 <variable name="ANSWEREDTIME">
511                                         <para>This is the amount of time for actual call.</para>
512                                 </variable>
513                                 <variable name="DIALSTATUS">
514                                         <para>This is the status of the call</para>
515                                         <value name="CHANUNAVAIL" />
516                                         <value name="CONGESTION" />
517                                         <value name="NOANSWER" />
518                                         <value name="BUSY" />
519                                         <value name="ANSWER" />
520                                         <value name="CANCEL" />
521                                         <value name="DONTCALL">
522                                                 For the Privacy and Screening Modes.
523                                                 Will be set if the called party chooses to send the calling party to the 'Go Away' script.
524                                         </value>
525                                         <value name="TORTURE">
526                                                 For the Privacy and Screening Modes.
527                                                 Will be set if the called party chooses to send the calling party to the 'torture' script.
528                                         </value>
529                                         <value name="INVALIDARGS" />
530                                 </variable>
531                         </variablelist>
532                 </description>
533         </application>
534         <application name="RetryDial" language="en_US">
535                 <synopsis>
536                         Place a call, retrying on failure allowing an optional exit extension.
537                 </synopsis>
538                 <syntax>
539                         <parameter name="announce" required="true">
540                                 <para>Filename of sound that will be played when no channel can be reached</para>
541                         </parameter>
542                         <parameter name="sleep" required="true">
543                                 <para>Number of seconds to wait after a dial attempt failed before a new attempt is made</para>
544                         </parameter>
545                         <parameter name="retries" required="true">
546                                 <para>Number of retries</para>
547                                 <para>When this is reached flow will continue at the next priority in the dialplan</para>
548                         </parameter>
549                         <parameter name="dialargs" required="true">
550                                 <para>Same format as arguments provided to the Dial application</para>
551                         </parameter>
552                 </syntax>
553                 <description>
554                         <para>This application will attempt to place a call using the normal Dial application.
555                         If no channel can be reached, the <replaceable>announce</replaceable> file will be played.
556                         Then, it will wait <replaceable>sleep</replaceable> number of seconds before retrying the call.
557                         After <replaceable>retries</replaceable> number of attempts, the calling channel will continue at the next priority in the dialplan.
558                         If the <replaceable>retries</replaceable> setting is set to 0, this application will retry endlessly.
559                         While waiting to retry a call, a 1 digit extension may be dialed. If that
560                         extension exists in either the context defined in <variable>EXITCONTEXT</variable> or the current
561                         one, The call will jump to that extension immediately.
562                         The <replaceable>dialargs</replaceable> are specified in the same format that arguments are provided
563                         to the Dial application.</para>
564                 </description>
565         </application>
566  ***/
567
568 static const char app[] = "Dial";
569 static const char rapp[] = "RetryDial";
570
571 enum {
572         OPT_ANNOUNCE =          (1 << 0),
573         OPT_RESETCDR =          (1 << 1),
574         OPT_DTMF_EXIT =         (1 << 2),
575         OPT_SENDDTMF =          (1 << 3),
576         OPT_FORCECLID =         (1 << 4),
577         OPT_GO_ON =             (1 << 5),
578         OPT_CALLEE_HANGUP =     (1 << 6),
579         OPT_CALLER_HANGUP =     (1 << 7),
580         OPT_ORIGINAL_CLID =     (1 << 8),
581         OPT_DURATION_LIMIT =    (1 << 9),
582         OPT_MUSICBACK =         (1 << 10),
583         OPT_CALLEE_MACRO =      (1 << 11),
584         OPT_SCREEN_NOINTRO =    (1 << 12),
585         OPT_SCREEN_NOCALLERID = (1 << 13),
586         OPT_IGNORE_CONNECTEDLINE = (1 << 14),
587         OPT_SCREENING =         (1 << 15),
588         OPT_PRIVACY =           (1 << 16),
589         OPT_RINGBACK =          (1 << 17),
590         OPT_DURATION_STOP =     (1 << 18),
591         OPT_CALLEE_TRANSFER =   (1 << 19),
592         OPT_CALLER_TRANSFER =   (1 << 20),
593         OPT_CALLEE_MONITOR =    (1 << 21),
594         OPT_CALLER_MONITOR =    (1 << 22),
595         OPT_GOTO =              (1 << 23),
596         OPT_OPERMODE =          (1 << 24),
597         OPT_CALLEE_PARK =       (1 << 25),
598         OPT_CALLER_PARK =       (1 << 26),
599         OPT_IGNORE_FORWARDING = (1 << 27),
600         OPT_CALLEE_GOSUB =      (1 << 28),
601         OPT_CALLEE_MIXMONITOR = (1 << 29),
602         OPT_CALLER_MIXMONITOR = (1 << 30),
603 };
604
605 /* flags are now 64 bits, so keep it up! */
606 #define DIAL_STILLGOING      (1LLU << 31)
607 #define DIAL_NOFORWARDHTML   (1LLU << 32)
608 #define DIAL_CALLERID_ABSENT (1LLU << 33) /* TRUE if caller id is not available for connected line. */
609 #define OPT_CANCEL_ELSEWHERE (1LLU << 34)
610 #define OPT_PEER_H           (1LLU << 35)
611 #define OPT_CALLEE_GO_ON     (1LLU << 36)
612 #define OPT_CANCEL_TIMEOUT   (1LLU << 37)
613 #define OPT_FORCE_CID_TAG    (1LLU << 38)
614 #define OPT_FORCE_CID_PRES   (1LLU << 39)
615 #define OPT_CALLER_ANSWER    (1LLU << 40)
616 #define OPT_PREDIAL_CALLEE   (1LLU << 41)
617 #define OPT_PREDIAL_CALLER   (1LLU << 42)
618 #define OPT_RING_WITH_EARLY_MEDIA (1LLU << 43)
619
620 enum {
621         OPT_ARG_ANNOUNCE = 0,
622         OPT_ARG_SENDDTMF,
623         OPT_ARG_GOTO,
624         OPT_ARG_DURATION_LIMIT,
625         OPT_ARG_MUSICBACK,
626         OPT_ARG_CALLEE_MACRO,
627         OPT_ARG_RINGBACK,
628         OPT_ARG_CALLEE_GOSUB,
629         OPT_ARG_CALLEE_GO_ON,
630         OPT_ARG_PRIVACY,
631         OPT_ARG_DURATION_STOP,
632         OPT_ARG_OPERMODE,
633         OPT_ARG_SCREEN_NOINTRO,
634         OPT_ARG_ORIGINAL_CLID,
635         OPT_ARG_FORCECLID,
636         OPT_ARG_FORCE_CID_TAG,
637         OPT_ARG_FORCE_CID_PRES,
638         OPT_ARG_PREDIAL_CALLEE,
639         OPT_ARG_PREDIAL_CALLER,
640         /* note: this entry _MUST_ be the last one in the enum */
641         OPT_ARG_ARRAY_SIZE
642 };
643
644 AST_APP_OPTIONS(dial_exec_options, BEGIN_OPTIONS
645         AST_APP_OPTION_ARG('A', OPT_ANNOUNCE, OPT_ARG_ANNOUNCE),
646         AST_APP_OPTION('a', OPT_CALLER_ANSWER),
647         AST_APP_OPTION_ARG('b', OPT_PREDIAL_CALLEE, OPT_ARG_PREDIAL_CALLEE),
648         AST_APP_OPTION_ARG('B', OPT_PREDIAL_CALLER, OPT_ARG_PREDIAL_CALLER),
649         AST_APP_OPTION('C', OPT_RESETCDR),
650         AST_APP_OPTION('c', OPT_CANCEL_ELSEWHERE),
651         AST_APP_OPTION('d', OPT_DTMF_EXIT),
652         AST_APP_OPTION_ARG('D', OPT_SENDDTMF, OPT_ARG_SENDDTMF),
653         AST_APP_OPTION('e', OPT_PEER_H),
654         AST_APP_OPTION_ARG('f', OPT_FORCECLID, OPT_ARG_FORCECLID),
655         AST_APP_OPTION_ARG('F', OPT_CALLEE_GO_ON, OPT_ARG_CALLEE_GO_ON),
656         AST_APP_OPTION('g', OPT_GO_ON),
657         AST_APP_OPTION_ARG('G', OPT_GOTO, OPT_ARG_GOTO),
658         AST_APP_OPTION('h', OPT_CALLEE_HANGUP),
659         AST_APP_OPTION('H', OPT_CALLER_HANGUP),
660         AST_APP_OPTION('i', OPT_IGNORE_FORWARDING),
661         AST_APP_OPTION('I', OPT_IGNORE_CONNECTEDLINE),
662         AST_APP_OPTION('k', OPT_CALLEE_PARK),
663         AST_APP_OPTION('K', OPT_CALLER_PARK),
664         AST_APP_OPTION_ARG('L', OPT_DURATION_LIMIT, OPT_ARG_DURATION_LIMIT),
665         AST_APP_OPTION_ARG('m', OPT_MUSICBACK, OPT_ARG_MUSICBACK),
666         AST_APP_OPTION_ARG('M', OPT_CALLEE_MACRO, OPT_ARG_CALLEE_MACRO),
667         AST_APP_OPTION_ARG('n', OPT_SCREEN_NOINTRO, OPT_ARG_SCREEN_NOINTRO),
668         AST_APP_OPTION('N', OPT_SCREEN_NOCALLERID),
669         AST_APP_OPTION_ARG('o', OPT_ORIGINAL_CLID, OPT_ARG_ORIGINAL_CLID),
670         AST_APP_OPTION_ARG('O', OPT_OPERMODE, OPT_ARG_OPERMODE),
671         AST_APP_OPTION('p', OPT_SCREENING),
672         AST_APP_OPTION_ARG('P', OPT_PRIVACY, OPT_ARG_PRIVACY),
673         AST_APP_OPTION_ARG('r', OPT_RINGBACK, OPT_ARG_RINGBACK),
674         AST_APP_OPTION('R', OPT_RING_WITH_EARLY_MEDIA),
675         AST_APP_OPTION_ARG('S', OPT_DURATION_STOP, OPT_ARG_DURATION_STOP),
676         AST_APP_OPTION_ARG('s', OPT_FORCE_CID_TAG, OPT_ARG_FORCE_CID_TAG),
677         AST_APP_OPTION('t', OPT_CALLEE_TRANSFER),
678         AST_APP_OPTION('T', OPT_CALLER_TRANSFER),
679         AST_APP_OPTION_ARG('u', OPT_FORCE_CID_PRES, OPT_ARG_FORCE_CID_PRES),
680         AST_APP_OPTION_ARG('U', OPT_CALLEE_GOSUB, OPT_ARG_CALLEE_GOSUB),
681         AST_APP_OPTION('w', OPT_CALLEE_MONITOR),
682         AST_APP_OPTION('W', OPT_CALLER_MONITOR),
683         AST_APP_OPTION('x', OPT_CALLEE_MIXMONITOR),
684         AST_APP_OPTION('X', OPT_CALLER_MIXMONITOR),
685         AST_APP_OPTION('z', OPT_CANCEL_TIMEOUT),
686 END_OPTIONS );
687
688 #define CAN_EARLY_BRIDGE(flags,chan,peer) (!ast_test_flag64(flags, OPT_CALLEE_HANGUP | \
689         OPT_CALLER_HANGUP | OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER | \
690         OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR | OPT_CALLEE_PARK |  \
691         OPT_CALLER_PARK | OPT_ANNOUNCE | OPT_CALLEE_MACRO | OPT_CALLEE_GOSUB) && \
692         !ast_channel_audiohooks(chan) && !ast_channel_audiohooks(peer) && \
693         ast_framehook_list_is_empty(ast_channel_framehooks(chan)) && ast_framehook_list_is_empty(ast_channel_framehooks(peer)))
694
695 /*
696  * The list of active channels
697  */
698 struct chanlist {
699         AST_LIST_ENTRY(chanlist) node;
700         struct ast_channel *chan;
701         /*! Channel interface dialing string (is tech/number).  (Stored in stuff[]) */
702         const char *interface;
703         /*! Channel technology name.  (Stored in stuff[]) */
704         const char *tech;
705         /*! Channel device addressing.  (Stored in stuff[]) */
706         const char *number;
707         uint64_t flags;
708         /*! Saved connected party info from an AST_CONTROL_CONNECTED_LINE. */
709         struct ast_party_connected_line connected;
710         /*! TRUE if an AST_CONTROL_CONNECTED_LINE update was saved to the connected element. */
711         unsigned int pending_connected_update:1;
712         struct ast_aoc_decoded *aoc_s_rate_list;
713         /*! The interface, tech, and number strings are stuffed here. */
714         char stuff[0];
715 };
716
717 AST_LIST_HEAD_NOLOCK(dial_head, chanlist);
718
719 static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str **featurecode);
720
721 static void chanlist_free(struct chanlist *outgoing)
722 {
723         ast_party_connected_line_free(&outgoing->connected);
724         ast_aoc_destroy_decoded(outgoing->aoc_s_rate_list);
725         ast_free(outgoing);
726 }
727
728 static void hanguptree(struct dial_head *out_chans, struct ast_channel *exception, int answered_elsewhere)
729 {
730         /* Hang up a tree of stuff */
731         struct chanlist *outgoing;
732
733         while ((outgoing = AST_LIST_REMOVE_HEAD(out_chans, node))) {
734                 /* Hangup any existing lines we have open */
735                 if (outgoing->chan && (outgoing->chan != exception)) {
736                         if (answered_elsewhere) {
737                                 /* This is for the channel drivers */
738                                 ast_channel_hangupcause_set(outgoing->chan, AST_CAUSE_ANSWERED_ELSEWHERE);
739                         }
740                         ast_hangup(outgoing->chan);
741                 }
742                 chanlist_free(outgoing);
743         }
744 }
745
746 #define AST_MAX_WATCHERS 256
747
748 /*
749  * argument to handle_cause() and other functions.
750  */
751 struct cause_args {
752         struct ast_channel *chan;
753         int busy;
754         int congestion;
755         int nochan;
756 };
757
758 static void handle_cause(int cause, struct cause_args *num)
759 {
760         switch(cause) {
761         case AST_CAUSE_BUSY:
762                 num->busy++;
763                 break;
764         case AST_CAUSE_CONGESTION:
765                 num->congestion++;
766                 break;
767         case AST_CAUSE_NO_ROUTE_DESTINATION:
768         case AST_CAUSE_UNREGISTERED:
769                 num->nochan++;
770                 break;
771         case AST_CAUSE_NO_ANSWER:
772         case AST_CAUSE_NORMAL_CLEARING:
773                 break;
774         default:
775                 num->nochan++;
776                 break;
777         }
778 }
779
780 static int onedigit_goto(struct ast_channel *chan, const char *context, char exten, int pri)
781 {
782         char rexten[2] = { exten, '\0' };
783
784         if (context) {
785                 if (!ast_goto_if_exists(chan, context, rexten, pri))
786                         return 1;
787         } else {
788                 if (!ast_goto_if_exists(chan, ast_channel_context(chan), rexten, pri))
789                         return 1;
790                 else if (!ast_strlen_zero(ast_channel_macrocontext(chan))) {
791                         if (!ast_goto_if_exists(chan, ast_channel_macrocontext(chan), rexten, pri))
792                                 return 1;
793                 }
794         }
795         return 0;
796 }
797
798 /* do not call with chan lock held */
799 static const char *get_cid_name(char *name, int namelen, struct ast_channel *chan)
800 {
801         const char *context;
802         const char *exten;
803
804         ast_channel_lock(chan);
805         context = ast_strdupa(S_OR(ast_channel_macrocontext(chan), ast_channel_context(chan)));
806         exten = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
807         ast_channel_unlock(chan);
808
809         return ast_get_hint(NULL, 0, name, namelen, chan, context, exten) ? name : "";
810 }
811
812 /*!
813  * helper function for wait_for_answer()
814  *
815  * \param o Outgoing call channel list.
816  * \param num Incoming call channel cause accumulation
817  * \param peerflags Dial option flags
818  * \param single TRUE if there is only one outgoing call.
819  * \param caller_entertained TRUE if the caller is being entertained by MOH or ringback.
820  * \param to Remaining call timeout time.
821  * \param forced_clid OPT_FORCECLID caller id to send
822  * \param stored_clid Caller id representing the called party if needed
823  *
824  * XXX this code is highly suspicious, as it essentially overwrites
825  * the outgoing channel without properly deleting it.
826  *
827  * \todo eventually this function should be intergrated into and replaced by ast_call_forward()
828  */
829 static void do_forward(struct chanlist *o, struct cause_args *num,
830         struct ast_flags64 *peerflags, int single, int caller_entertained, int *to,
831         struct ast_party_id *forced_clid, struct ast_party_id *stored_clid)
832 {
833         char tmpchan[256];
834         struct ast_channel *original = o->chan;
835         struct ast_channel *c = o->chan; /* the winner */
836         struct ast_channel *in = num->chan; /* the input channel */
837         char *stuff;
838         char *tech;
839         int cause;
840         struct ast_party_caller caller;
841
842         ast_copy_string(tmpchan, ast_channel_call_forward(c), sizeof(tmpchan));
843         if ((stuff = strchr(tmpchan, '/'))) {
844                 *stuff++ = '\0';
845                 tech = tmpchan;
846         } else {
847                 const char *forward_context;
848                 ast_channel_lock(c);
849                 forward_context = pbx_builtin_getvar_helper(c, "FORWARD_CONTEXT");
850                 if (ast_strlen_zero(forward_context)) {
851                         forward_context = NULL;
852                 }
853                 snprintf(tmpchan, sizeof(tmpchan), "%s@%s", ast_channel_call_forward(c), forward_context ? forward_context : ast_channel_context(c));
854                 ast_channel_unlock(c);
855                 stuff = tmpchan;
856                 tech = "Local";
857         }
858         if (!strcasecmp(tech, "Local")) {
859                 /*
860                  * Drop the connected line update block for local channels since
861                  * this is going to run dialplan and the user can change his
862                  * mind about what connected line information he wants to send.
863                  */
864                 ast_clear_flag64(o, OPT_IGNORE_CONNECTEDLINE);
865         }
866
867         /* Before processing channel, go ahead and check for forwarding */
868         ast_verb(3, "Now forwarding %s to '%s/%s' (thanks to %s)\n", ast_channel_name(in), tech, stuff, ast_channel_name(c));
869         /* If we have been told to ignore forwards, just set this channel to null and continue processing extensions normally */
870         if (ast_test_flag64(peerflags, OPT_IGNORE_FORWARDING)) {
871                 ast_verb(3, "Forwarding %s to '%s/%s' prevented.\n", ast_channel_name(in), tech, stuff);
872                 c = o->chan = NULL;
873                 cause = AST_CAUSE_BUSY;
874         } else {
875                 struct ast_format_cap *nativeformats;
876
877                 ast_channel_lock(in);
878                 nativeformats = ao2_bump(ast_channel_nativeformats(in));
879                 ast_channel_unlock(in);
880
881                 /* Setup parameters */
882                 c = o->chan = ast_request(tech, nativeformats, NULL, in, stuff, &cause);
883
884                 ao2_cleanup(nativeformats);
885
886                 if (c) {
887                         if (single && !caller_entertained) {
888                                 ast_channel_make_compatible(in, o->chan);
889                         }
890                         ast_channel_lock_both(in, o->chan);
891                         ast_channel_inherit_variables(in, o->chan);
892                         ast_channel_datastore_inherit(in, o->chan);
893                         ast_max_forwards_decrement(o->chan);
894                         ast_channel_unlock(in);
895                         ast_channel_unlock(o->chan);
896                         /* When a call is forwarded, we don't want to track new interfaces
897                          * dialed for CC purposes. Setting the done flag will ensure that
898                          * any Dial operations that happen later won't record CC interfaces.
899                          */
900                         ast_ignore_cc(o->chan);
901                         ast_log(LOG_NOTICE, "Not accepting call completion offers from call-forward recipient %s\n", ast_channel_name(o->chan));
902                 } else
903                         ast_log(LOG_NOTICE,
904                                 "Forwarding failed to create channel to dial '%s/%s' (cause = %d)\n",
905                                 tech, stuff, cause);
906         }
907         if (!c) {
908                 ast_channel_publish_dial(in, original, stuff, "BUSY");
909                 ast_clear_flag64(o, DIAL_STILLGOING);
910                 handle_cause(cause, num);
911                 ast_hangup(original);
912         } else {
913                 ast_channel_lock_both(c, original);
914                 ast_party_redirecting_copy(ast_channel_redirecting(c),
915                         ast_channel_redirecting(original));
916                 ast_channel_unlock(c);
917                 ast_channel_unlock(original);
918
919                 ast_channel_lock_both(c, in);
920
921                 if (single && !caller_entertained && CAN_EARLY_BRIDGE(peerflags, c, in)) {
922                         ast_rtp_instance_early_bridge_make_compatible(c, in);
923                 }
924
925                 if (!ast_channel_redirecting(c)->from.number.valid
926                         || ast_strlen_zero(ast_channel_redirecting(c)->from.number.str)) {
927                         /*
928                          * The call was not previously redirected so it is
929                          * now redirected from this number.
930                          */
931                         ast_party_number_free(&ast_channel_redirecting(c)->from.number);
932                         ast_party_number_init(&ast_channel_redirecting(c)->from.number);
933                         ast_channel_redirecting(c)->from.number.valid = 1;
934                         ast_channel_redirecting(c)->from.number.str =
935                                 ast_strdup(S_OR(ast_channel_macroexten(in), ast_channel_exten(in)));
936                 }
937
938                 ast_channel_dialed(c)->transit_network_select = ast_channel_dialed(in)->transit_network_select;
939
940                 /* Determine CallerID to store in outgoing channel. */
941                 ast_party_caller_set_init(&caller, ast_channel_caller(c));
942                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
943                         caller.id = *stored_clid;
944                         ast_channel_set_caller_event(c, &caller, NULL);
945                         ast_set_flag64(o, DIAL_CALLERID_ABSENT);
946                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(c)->id.number.valid,
947                         ast_channel_caller(c)->id.number.str, NULL))) {
948                         /*
949                          * The new channel has no preset CallerID number by the channel
950                          * driver.  Use the dialplan extension and hint name.
951                          */
952                         caller.id = *stored_clid;
953                         ast_channel_set_caller_event(c, &caller, NULL);
954                         ast_set_flag64(o, DIAL_CALLERID_ABSENT);
955                 } else {
956                         ast_clear_flag64(o, DIAL_CALLERID_ABSENT);
957                 }
958
959                 /* Determine CallerID for outgoing channel to send. */
960                 if (ast_test_flag64(o, OPT_FORCECLID)) {
961                         struct ast_party_connected_line connected;
962
963                         ast_party_connected_line_init(&connected);
964                         connected.id = *forced_clid;
965                         ast_party_connected_line_copy(ast_channel_connected(c), &connected);
966                 } else {
967                         ast_connected_line_copy_from_caller(ast_channel_connected(c), ast_channel_caller(in));
968                 }
969
970                 ast_channel_req_accountcodes(c, in, AST_CHANNEL_REQUESTOR_BRIDGE_PEER);
971
972                 ast_channel_appl_set(c, "AppDial");
973                 ast_channel_data_set(c, "(Outgoing Line)");
974                 ast_channel_publish_snapshot(c);
975
976                 ast_channel_unlock(in);
977                 if (single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
978                         struct ast_party_redirecting redirecting;
979
980                         /*
981                          * Redirecting updates to the caller make sense only on single
982                          * calls.
983                          *
984                          * We must unlock c before calling
985                          * ast_channel_redirecting_macro, because we put c into
986                          * autoservice there.  That is pretty much a guaranteed
987                          * deadlock.  This is why the handling of c's lock may seem a
988                          * bit unusual here.
989                          */
990                         ast_party_redirecting_init(&redirecting);
991                         ast_party_redirecting_copy(&redirecting, ast_channel_redirecting(c));
992                         ast_channel_unlock(c);
993                         if (ast_channel_redirecting_sub(c, in, &redirecting, 0) &&
994                                 ast_channel_redirecting_macro(c, in, &redirecting, 1, 0)) {
995                                 ast_channel_update_redirecting(in, &redirecting, NULL);
996                         }
997                         ast_party_redirecting_free(&redirecting);
998                 } else {
999                         ast_channel_unlock(c);
1000                 }
1001
1002                 if (ast_test_flag64(peerflags, OPT_CANCEL_TIMEOUT)) {
1003                         *to = -1;
1004                 }
1005
1006                 if (ast_call(c, stuff, 0)) {
1007                         ast_log(LOG_NOTICE, "Forwarding failed to dial '%s/%s'\n",
1008                                 tech, stuff);
1009                         ast_channel_publish_dial(in, original, stuff, "CONGESTION");
1010                         ast_clear_flag64(o, DIAL_STILLGOING);
1011                         ast_hangup(original);
1012                         ast_hangup(c);
1013                         c = o->chan = NULL;
1014                         num->nochan++;
1015                 } else {
1016                         ast_channel_publish_dial_forward(in, original, c, NULL, "CANCEL",
1017                                 ast_channel_call_forward(original));
1018
1019                         ast_channel_publish_dial(in, c, stuff, NULL);
1020
1021                         /* Hangup the original channel now, in case we needed it */
1022                         ast_hangup(original);
1023                 }
1024                 if (single && !caller_entertained) {
1025                         ast_indicate(in, -1);
1026                 }
1027         }
1028 }
1029
1030 /* argument used for some functions. */
1031 struct privacy_args {
1032         int sentringing;
1033         int privdb_val;
1034         char privcid[256];
1035         char privintro[1024];
1036         char status[256];
1037 };
1038
1039 static void publish_dial_end_event(struct ast_channel *in, struct dial_head *out_chans, struct ast_channel *exception, const char *status)
1040 {
1041         struct chanlist *outgoing;
1042         AST_LIST_TRAVERSE(out_chans, outgoing, node) {
1043                 if (!outgoing->chan || outgoing->chan == exception) {
1044                         continue;
1045                 }
1046                 ast_channel_publish_dial(in, outgoing->chan, NULL, status);
1047         }
1048 }
1049
1050 /*!
1051  * \internal
1052  * \brief Update connected line on chan from peer.
1053  * \since 13.6.0
1054  *
1055  * \param chan Channel to get connected line updated.
1056  * \param peer Channel providing connected line information.
1057  * \param is_caller Non-zero if chan is the calling channel.
1058  *
1059  * \return Nothing
1060  */
1061 static void update_connected_line_from_peer(struct ast_channel *chan, struct ast_channel *peer, int is_caller)
1062 {
1063         struct ast_party_connected_line connected_caller;
1064
1065         ast_party_connected_line_init(&connected_caller);
1066
1067         ast_channel_lock(peer);
1068         ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(peer));
1069         ast_channel_unlock(peer);
1070         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1071         if (ast_channel_connected_line_sub(peer, chan, &connected_caller, 0)
1072                 && ast_channel_connected_line_macro(peer, chan, &connected_caller, is_caller, 0)) {
1073                 ast_channel_update_connected_line(chan, &connected_caller, NULL);
1074         }
1075         ast_party_connected_line_free(&connected_caller);
1076 }
1077
1078 static struct ast_channel *wait_for_answer(struct ast_channel *in,
1079         struct dial_head *out_chans, int *to, struct ast_flags64 *peerflags,
1080         char *opt_args[],
1081         struct privacy_args *pa,
1082         const struct cause_args *num_in, int *result, char *dtmf_progress,
1083         const int ignore_cc,
1084         struct ast_party_id *forced_clid, struct ast_party_id *stored_clid)
1085 {
1086         struct cause_args num = *num_in;
1087         int prestart = num.busy + num.congestion + num.nochan;
1088         int orig = *to;
1089         struct ast_channel *peer = NULL;
1090 #ifdef HAVE_EPOLL
1091         struct chanlist *epollo;
1092 #endif
1093         struct chanlist *outgoing = AST_LIST_FIRST(out_chans);
1094         /* single is set if only one destination is enabled */
1095         int single = outgoing && !AST_LIST_NEXT(outgoing, node);
1096         int caller_entertained = outgoing
1097                 && ast_test_flag64(outgoing, OPT_MUSICBACK | OPT_RINGBACK);
1098         struct ast_str *featurecode = ast_str_alloca(AST_FEATURE_MAX_LEN + 1);
1099         int cc_recall_core_id;
1100         int is_cc_recall;
1101         int cc_frame_received = 0;
1102         int num_ringing = 0;
1103         struct timeval start = ast_tvnow();
1104
1105         if (single) {
1106                 /* Turn off hold music, etc */
1107                 if (!caller_entertained) {
1108                         ast_deactivate_generator(in);
1109                         /* If we are calling a single channel, and not providing ringback or music, */
1110                         /* then, make them compatible for in-band tone purpose */
1111                         if (ast_channel_make_compatible(in, outgoing->chan) < 0) {
1112                                 /* If these channels can not be made compatible,
1113                                  * there is no point in continuing.  The bridge
1114                                  * will just fail if it gets that far.
1115                                  */
1116                                 *to = -1;
1117                                 strcpy(pa->status, "CONGESTION");
1118                                 ast_channel_publish_dial(in, outgoing->chan, NULL, pa->status);
1119                                 return NULL;
1120                         }
1121                 }
1122
1123                 if (!ast_test_flag64(outgoing, OPT_IGNORE_CONNECTEDLINE)
1124                         && !ast_test_flag64(outgoing, DIAL_CALLERID_ABSENT)) {
1125                         update_connected_line_from_peer(in, outgoing->chan, 1);
1126                 }
1127         }
1128
1129         is_cc_recall = ast_cc_is_recall(in, &cc_recall_core_id, NULL);
1130
1131 #ifdef HAVE_EPOLL
1132         AST_LIST_TRAVERSE(out_chans, epollo, node) {
1133                 ast_poll_channel_add(in, epollo->chan);
1134         }
1135 #endif
1136
1137         while ((*to = ast_remaining_ms(start, orig)) && !peer) {
1138                 struct chanlist *o;
1139                 int pos = 0; /* how many channels do we handle */
1140                 int numlines = prestart;
1141                 struct ast_channel *winner;
1142                 struct ast_channel *watchers[AST_MAX_WATCHERS];
1143
1144                 watchers[pos++] = in;
1145                 AST_LIST_TRAVERSE(out_chans, o, node) {
1146                         /* Keep track of important channels */
1147                         if (ast_test_flag64(o, DIAL_STILLGOING) && o->chan)
1148                                 watchers[pos++] = o->chan;
1149                         numlines++;
1150                 }
1151                 if (pos == 1) { /* only the input channel is available */
1152                         if (numlines == (num.busy + num.congestion + num.nochan)) {
1153                                 ast_verb(2, "Everyone is busy/congested at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1154                                 if (num.busy)
1155                                         strcpy(pa->status, "BUSY");
1156                                 else if (num.congestion)
1157                                         strcpy(pa->status, "CONGESTION");
1158                                 else if (num.nochan)
1159                                         strcpy(pa->status, "CHANUNAVAIL");
1160                         } else {
1161                                 ast_verb(3, "No one is available to answer at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1162                         }
1163                         *to = 0;
1164                         if (is_cc_recall) {
1165                                 ast_cc_failed(cc_recall_core_id, "Everyone is busy/congested for the recall. How sad");
1166                         }
1167                         return NULL;
1168                 }
1169                 winner = ast_waitfor_n(watchers, pos, to);
1170                 AST_LIST_TRAVERSE(out_chans, o, node) {
1171                         struct ast_frame *f;
1172                         struct ast_channel *c = o->chan;
1173
1174                         if (c == NULL)
1175                                 continue;
1176                         if (ast_test_flag64(o, DIAL_STILLGOING) && ast_channel_state(c) == AST_STATE_UP) {
1177                                 if (!peer) {
1178                                         ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1179                                         if (!single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1180                                                 if (o->pending_connected_update) {
1181                                                         if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1182                                                                 ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1183                                                                 ast_channel_update_connected_line(in, &o->connected, NULL);
1184                                                         }
1185                                                 } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1186                                                         update_connected_line_from_peer(in, c, 1);
1187                                                 }
1188                                         }
1189                                         if (o->aoc_s_rate_list) {
1190                                                 size_t encoded_size;
1191                                                 struct ast_aoc_encoded *encoded;
1192                                                 if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1193                                                         ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1194                                                         ast_aoc_destroy_encoded(encoded);
1195                                                 }
1196                                         }
1197                                         peer = c;
1198                                         ast_copy_flags64(peerflags, o,
1199                                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1200                                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1201                                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1202                                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
1203                                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1204                                                 DIAL_NOFORWARDHTML);
1205                                         ast_channel_dialcontext_set(c, "");
1206                                         ast_channel_exten_set(c, "");
1207                                 }
1208                                 continue;
1209                         }
1210                         if (c != winner)
1211                                 continue;
1212                         /* here, o->chan == c == winner */
1213                         if (!ast_strlen_zero(ast_channel_call_forward(c))) {
1214                                 pa->sentringing = 0;
1215                                 if (!ignore_cc && (f = ast_read(c))) {
1216                                         if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_CC) {
1217                                                 /* This channel is forwarding the call, and is capable of CC, so
1218                                                  * be sure to add the new device interface to the list
1219                                                  */
1220                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1221                                         }
1222                                         ast_frfree(f);
1223                                 }
1224
1225                                 if (o->pending_connected_update) {
1226                                         /*
1227                                          * Re-seed the chanlist's connected line information with
1228                                          * previously acquired connected line info from the incoming
1229                                          * channel.  The previously acquired connected line info could
1230                                          * have been set through the CONNECTED_LINE dialplan function.
1231                                          */
1232                                         o->pending_connected_update = 0;
1233                                         ast_channel_lock(in);
1234                                         ast_party_connected_line_copy(&o->connected, ast_channel_connected(in));
1235                                         ast_channel_unlock(in);
1236                                 }
1237
1238                                 do_forward(o, &num, peerflags, single, caller_entertained, &orig,
1239                                         forced_clid, stored_clid);
1240
1241                                 if (single && o->chan
1242                                         && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)
1243                                         && !ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1244                                         update_connected_line_from_peer(in, o->chan, 1);
1245                                 }
1246                                 continue;
1247                         }
1248                         f = ast_read(winner);
1249                         if (!f) {
1250                                 ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1251 #ifdef HAVE_EPOLL
1252                                 ast_poll_channel_del(in, c);
1253 #endif
1254                                 ast_channel_publish_dial(in, c, NULL, ast_hangup_cause_to_dial_status(ast_channel_hangupcause(c)));
1255                                 ast_hangup(c);
1256                                 c = o->chan = NULL;
1257                                 ast_clear_flag64(o, DIAL_STILLGOING);
1258                                 handle_cause(ast_channel_hangupcause(in), &num);
1259                                 continue;
1260                         }
1261                         switch (f->frametype) {
1262                         case AST_FRAME_CONTROL:
1263                                 switch (f->subclass.integer) {
1264                                 case AST_CONTROL_ANSWER:
1265                                         /* This is our guy if someone answered. */
1266                                         if (!peer) {
1267                                                 ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1268                                                 if (!single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1269                                                         if (o->pending_connected_update) {
1270                                                                 if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1271                                                                         ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1272                                                                         ast_channel_update_connected_line(in, &o->connected, NULL);
1273                                                                 }
1274                                                         } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1275                                                                 update_connected_line_from_peer(in, c, 1);
1276                                                         }
1277                                                 }
1278                                                 if (o->aoc_s_rate_list) {
1279                                                         size_t encoded_size;
1280                                                         struct ast_aoc_encoded *encoded;
1281                                                         if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1282                                                                 ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1283                                                                 ast_aoc_destroy_encoded(encoded);
1284                                                         }
1285                                                 }
1286                                                 peer = c;
1287                                                 /* Inform everyone else that they've been canceled.
1288                                                  * The dial end event for the peer will be sent out after
1289                                                  * other Dial options have been handled.
1290                                                  */
1291                                                 publish_dial_end_event(in, out_chans, peer, "CANCEL");
1292                                                 ast_copy_flags64(peerflags, o,
1293                                                         OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1294                                                         OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1295                                                         OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1296                                                         OPT_CALLEE_PARK | OPT_CALLER_PARK |
1297                                                         OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1298                                                         DIAL_NOFORWARDHTML);
1299                                                 ast_channel_dialcontext_set(c, "");
1300                                                 ast_channel_exten_set(c, "");
1301                                                 if (CAN_EARLY_BRIDGE(peerflags, in, peer)) {
1302                                                         /* Setup early bridge if appropriate */
1303                                                         ast_channel_early_bridge(in, peer);
1304                                                 }
1305                                         }
1306                                         /* If call has been answered, then the eventual hangup is likely to be normal hangup */
1307                                         ast_channel_hangupcause_set(in, AST_CAUSE_NORMAL_CLEARING);
1308                                         ast_channel_hangupcause_set(c, AST_CAUSE_NORMAL_CLEARING);
1309                                         break;
1310                                 case AST_CONTROL_BUSY:
1311                                         ast_verb(3, "%s is busy\n", ast_channel_name(c));
1312                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1313                                         ast_channel_publish_dial(in, c, NULL, "BUSY");
1314                                         ast_hangup(c);
1315                                         c = o->chan = NULL;
1316                                         ast_clear_flag64(o, DIAL_STILLGOING);
1317                                         handle_cause(AST_CAUSE_BUSY, &num);
1318                                         break;
1319                                 case AST_CONTROL_CONGESTION:
1320                                         ast_verb(3, "%s is circuit-busy\n", ast_channel_name(c));
1321                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1322                                         ast_channel_publish_dial(in, c, NULL, "CONGESTION");
1323                                         ast_hangup(c);
1324                                         c = o->chan = NULL;
1325                                         ast_clear_flag64(o, DIAL_STILLGOING);
1326                                         handle_cause(AST_CAUSE_CONGESTION, &num);
1327                                         break;
1328                                 case AST_CONTROL_RINGING:
1329                                         /* This is a tricky area to get right when using a native
1330                                          * CC agent. The reason is that we do the best we can to send only a
1331                                          * single ringing notification to the caller.
1332                                          *
1333                                          * Call completion complicates the logic used here. CCNR is typically
1334                                          * offered during a ringing message. Let's say that party A calls
1335                                          * parties B, C, and D. B and C do not support CC requests, but D
1336                                          * does. If we were to receive a ringing notification from B before
1337                                          * the others, then we would end up sending a ringing message to
1338                                          * A with no CCNR offer present.
1339                                          *
1340                                          * The approach that we have taken is that if we receive a ringing
1341                                          * response from a party and no CCNR offer is present, we need to
1342                                          * wait. Specifically, we need to wait until either a) a called party
1343                                          * offers CCNR in its ringing response or b) all called parties have
1344                                          * responded in some way to our call and none offers CCNR.
1345                                          *
1346                                          * The drawback to this is that if one of the parties has a delayed
1347                                          * response or, god forbid, one just plain doesn't respond to our
1348                                          * outgoing call, then this will result in a significant delay between
1349                                          * when the caller places the call and hears ringback.
1350                                          *
1351                                          * Note also that if CC is disabled for this call, then it is perfectly
1352                                          * fine for ringing frames to get sent through.
1353                                          */
1354                                         ++num_ringing;
1355                                         if (ignore_cc || cc_frame_received || num_ringing == numlines) {
1356                                                 ast_verb(3, "%s is ringing\n", ast_channel_name(c));
1357                                                 /* Setup early media if appropriate */
1358                                                 if (single && !caller_entertained
1359                                                         && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1360                                                         ast_channel_early_bridge(in, c);
1361                                                 }
1362                                                 if (!(pa->sentringing) && !ast_test_flag64(outgoing, OPT_MUSICBACK) && ast_strlen_zero(opt_args[OPT_ARG_RINGBACK])) {
1363                                                         ast_indicate(in, AST_CONTROL_RINGING);
1364                                                         pa->sentringing++;
1365                                                 }
1366                                         }
1367                                         break;
1368                                 case AST_CONTROL_PROGRESS:
1369                                         ast_verb(3, "%s is making progress passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1370                                         /* Setup early media if appropriate */
1371                                         if (single && !caller_entertained
1372                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1373                                                 ast_channel_early_bridge(in, c);
1374                                         }
1375                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK)) {
1376                                                 if (single || (!single && !pa->sentringing)) {
1377                                                         ast_indicate(in, AST_CONTROL_PROGRESS);
1378                                                 }
1379                                         }
1380                                         if (!ast_strlen_zero(dtmf_progress)) {
1381                                                 ast_verb(3,
1382                                                         "Sending DTMF '%s' to the called party as result of receiving a PROGRESS message.\n",
1383                                                         dtmf_progress);
1384                                                 ast_dtmf_stream(c, in, dtmf_progress, 250, 0);
1385                                         }
1386                                         break;
1387                                 case AST_CONTROL_VIDUPDATE:
1388                                 case AST_CONTROL_SRCUPDATE:
1389                                 case AST_CONTROL_SRCCHANGE:
1390                                         if (!single || caller_entertained) {
1391                                                 break;
1392                                         }
1393                                         ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1394                                                 ast_channel_name(c), f->subclass.integer, ast_channel_name(in));
1395                                         ast_indicate(in, f->subclass.integer);
1396                                         break;
1397                                 case AST_CONTROL_CONNECTED_LINE:
1398                                         if (ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1399                                                 ast_verb(3, "Connected line update to %s prevented.\n", ast_channel_name(in));
1400                                                 break;
1401                                         }
1402                                         if (!single) {
1403                                                 struct ast_party_connected_line connected;
1404
1405                                                 ast_verb(3, "%s connected line has changed. Saving it until answer for %s\n",
1406                                                         ast_channel_name(c), ast_channel_name(in));
1407                                                 ast_party_connected_line_set_init(&connected, &o->connected);
1408                                                 ast_connected_line_parse_data(f->data.ptr, f->datalen, &connected);
1409                                                 ast_party_connected_line_set(&o->connected, &connected, NULL);
1410                                                 ast_party_connected_line_free(&connected);
1411                                                 o->pending_connected_update = 1;
1412                                                 break;
1413                                         }
1414                                         if (ast_channel_connected_line_sub(c, in, f, 1) &&
1415                                                 ast_channel_connected_line_macro(c, in, f, 1, 1)) {
1416                                                 ast_indicate_data(in, AST_CONTROL_CONNECTED_LINE, f->data.ptr, f->datalen);
1417                                         }
1418                                         break;
1419                                 case AST_CONTROL_AOC:
1420                                         {
1421                                                 struct ast_aoc_decoded *decoded = ast_aoc_decode(f->data.ptr, f->datalen, o->chan);
1422                                                 if (decoded && (ast_aoc_get_msg_type(decoded) == AST_AOC_S)) {
1423                                                         ast_aoc_destroy_decoded(o->aoc_s_rate_list);
1424                                                         o->aoc_s_rate_list = decoded;
1425                                                 } else {
1426                                                         ast_aoc_destroy_decoded(decoded);
1427                                                 }
1428                                         }
1429                                         break;
1430                                 case AST_CONTROL_REDIRECTING:
1431                                         if (!single) {
1432                                                 /*
1433                                                  * Redirecting updates to the caller make sense only on single
1434                                                  * calls.
1435                                                  */
1436                                                 break;
1437                                         }
1438                                         if (ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1439                                                 ast_verb(3, "Redirecting update to %s prevented.\n", ast_channel_name(in));
1440                                                 break;
1441                                         }
1442                                         ast_verb(3, "%s redirecting info has changed, passing it to %s\n",
1443                                                 ast_channel_name(c), ast_channel_name(in));
1444                                         if (ast_channel_redirecting_sub(c, in, f, 1) &&
1445                                                 ast_channel_redirecting_macro(c, in, f, 1, 1)) {
1446                                                 ast_indicate_data(in, AST_CONTROL_REDIRECTING, f->data.ptr, f->datalen);
1447                                         }
1448                                         pa->sentringing = 0;
1449                                         break;
1450                                 case AST_CONTROL_PROCEEDING:
1451                                         ast_verb(3, "%s is proceeding passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1452                                         if (single && !caller_entertained
1453                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1454                                                 ast_channel_early_bridge(in, c);
1455                                         }
1456                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK))
1457                                                 ast_indicate(in, AST_CONTROL_PROCEEDING);
1458                                         break;
1459                                 case AST_CONTROL_HOLD:
1460                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1461                                         ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(c));
1462                                         ast_indicate_data(in, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1463                                         break;
1464                                 case AST_CONTROL_UNHOLD:
1465                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1466                                         ast_verb(3, "Call on %s left from hold\n", ast_channel_name(c));
1467                                         ast_indicate(in, AST_CONTROL_UNHOLD);
1468                                         break;
1469                                 case AST_CONTROL_OFFHOOK:
1470                                 case AST_CONTROL_FLASH:
1471                                         /* Ignore going off hook and flash */
1472                                         break;
1473                                 case AST_CONTROL_CC:
1474                                         if (!ignore_cc) {
1475                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1476                                                 cc_frame_received = 1;
1477                                         }
1478                                         break;
1479                                 case AST_CONTROL_PVT_CAUSE_CODE:
1480                                         ast_indicate_data(in, AST_CONTROL_PVT_CAUSE_CODE, f->data.ptr, f->datalen);
1481                                         break;
1482                                 case -1:
1483                                         if (single && !caller_entertained) {
1484                                                 ast_verb(3, "%s stopped sounds\n", ast_channel_name(c));
1485                                                 ast_indicate(in, -1);
1486                                                 pa->sentringing = 0;
1487                                         }
1488                                         break;
1489                                 default:
1490                                         ast_debug(1, "Dunno what to do with control type %d\n", f->subclass.integer);
1491                                         break;
1492                                 }
1493                                 break;
1494                         case AST_FRAME_VOICE:
1495                         case AST_FRAME_IMAGE:
1496                                 if (caller_entertained) {
1497                                         break;
1498                                 }
1499                                 /* Fall through */
1500                         case AST_FRAME_TEXT:
1501                                 if (single && ast_write(in, f)) {
1502                                         ast_log(LOG_WARNING, "Unable to write frametype: %u\n",
1503                                                 f->frametype);
1504                                 }
1505                                 break;
1506                         case AST_FRAME_HTML:
1507                                 if (single && !ast_test_flag64(outgoing, DIAL_NOFORWARDHTML)
1508                                         && ast_channel_sendhtml(in, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1509                                         ast_log(LOG_WARNING, "Unable to send URL\n");
1510                                 }
1511                                 break;
1512                         default:
1513                                 break;
1514                         }
1515                         ast_frfree(f);
1516                 } /* end for */
1517                 if (winner == in) {
1518                         struct ast_frame *f = ast_read(in);
1519 #if 0
1520                         if (f && (f->frametype != AST_FRAME_VOICE))
1521                                 printf("Frame type: %d, %d\n", f->frametype, f->subclass);
1522                         else if (!f || (f->frametype != AST_FRAME_VOICE))
1523                                 printf("Hangup received on %s\n", in->name);
1524 #endif
1525                         if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP))) {
1526                                 /* Got hung up */
1527                                 *to = -1;
1528                                 strcpy(pa->status, "CANCEL");
1529                                 publish_dial_end_event(in, out_chans, NULL, pa->status);
1530                                 if (f) {
1531                                         if (f->data.uint32) {
1532                                                 ast_channel_hangupcause_set(in, f->data.uint32);
1533                                         }
1534                                         ast_frfree(f);
1535                                 }
1536                                 if (is_cc_recall) {
1537                                         ast_cc_completed(in, "CC completed, although the caller hung up (cancelled)");
1538                                 }
1539                                 return NULL;
1540                         }
1541
1542                         /* now f is guaranteed non-NULL */
1543                         if (f->frametype == AST_FRAME_DTMF) {
1544                                 if (ast_test_flag64(peerflags, OPT_DTMF_EXIT)) {
1545                                         const char *context;
1546                                         ast_channel_lock(in);
1547                                         context = pbx_builtin_getvar_helper(in, "EXITCONTEXT");
1548                                         if (onedigit_goto(in, context, (char) f->subclass.integer, 1)) {
1549                                                 ast_verb(3, "User hit %c to disconnect call.\n", f->subclass.integer);
1550                                                 *to = 0;
1551                                                 *result = f->subclass.integer;
1552                                                 strcpy(pa->status, "CANCEL");
1553                                                 publish_dial_end_event(in, out_chans, NULL, pa->status);
1554                                                 ast_frfree(f);
1555                                                 ast_channel_unlock(in);
1556                                                 if (is_cc_recall) {
1557                                                         ast_cc_completed(in, "CC completed, but the caller used DTMF to exit");
1558                                                 }
1559                                                 return NULL;
1560                                         }
1561                                         ast_channel_unlock(in);
1562                                 }
1563
1564                                 if (ast_test_flag64(peerflags, OPT_CALLER_HANGUP) &&
1565                                         detect_disconnect(in, f->subclass.integer, &featurecode)) {
1566                                         ast_verb(3, "User requested call disconnect.\n");
1567                                         *to = 0;
1568                                         strcpy(pa->status, "CANCEL");
1569                                         publish_dial_end_event(in, out_chans, NULL, pa->status);
1570                                         ast_frfree(f);
1571                                         if (is_cc_recall) {
1572                                                 ast_cc_completed(in, "CC completed, but the caller hung up with DTMF");
1573                                         }
1574                                         return NULL;
1575                                 }
1576                         }
1577
1578                         /* Send the frame from the in channel to all outgoing channels. */
1579                         AST_LIST_TRAVERSE(out_chans, o, node) {
1580                                 if (!o->chan || !ast_test_flag64(o, DIAL_STILLGOING)) {
1581                                         /* This outgoing channel has died so don't send the frame to it. */
1582                                         continue;
1583                                 }
1584                                 switch (f->frametype) {
1585                                 case AST_FRAME_HTML:
1586                                         /* Forward HTML stuff */
1587                                         if (!ast_test_flag64(o, DIAL_NOFORWARDHTML)
1588                                                 && ast_channel_sendhtml(o->chan, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1589                                                 ast_log(LOG_WARNING, "Unable to send URL\n");
1590                                         }
1591                                         break;
1592                                 case AST_FRAME_VOICE:
1593                                 case AST_FRAME_IMAGE:
1594                                         if (!single || caller_entertained) {
1595                                                 /*
1596                                                  * We are calling multiple parties or caller is being
1597                                                  * entertained and has thus not been made compatible.
1598                                                  * No need to check any other called parties.
1599                                                  */
1600                                                 goto skip_frame;
1601                                         }
1602                                         /* Fall through */
1603                                 case AST_FRAME_TEXT:
1604                                 case AST_FRAME_DTMF_BEGIN:
1605                                 case AST_FRAME_DTMF_END:
1606                                         if (ast_write(o->chan, f)) {
1607                                                 ast_log(LOG_WARNING, "Unable to forward frametype: %u\n",
1608                                                         f->frametype);
1609                                         }
1610                                         break;
1611                                 case AST_FRAME_CONTROL:
1612                                         switch (f->subclass.integer) {
1613                                         case AST_CONTROL_HOLD:
1614                                                 ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(o->chan));
1615                                                 ast_indicate_data(o->chan, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1616                                                 break;
1617                                         case AST_CONTROL_UNHOLD:
1618                                                 ast_verb(3, "Call on %s left from hold\n", ast_channel_name(o->chan));
1619                                                 ast_indicate(o->chan, AST_CONTROL_UNHOLD);
1620                                                 break;
1621                                         case AST_CONTROL_VIDUPDATE:
1622                                         case AST_CONTROL_SRCUPDATE:
1623                                         case AST_CONTROL_SRCCHANGE:
1624                                                 if (!single || caller_entertained) {
1625                                                         /*
1626                                                          * We are calling multiple parties or caller is being
1627                                                          * entertained and has thus not been made compatible.
1628                                                          * No need to check any other called parties.
1629                                                          */
1630                                                         goto skip_frame;
1631                                                 }
1632                                                 ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1633                                                         ast_channel_name(in), f->subclass.integer, ast_channel_name(o->chan));
1634                                                 ast_indicate(o->chan, f->subclass.integer);
1635                                                 break;
1636                                         case AST_CONTROL_CONNECTED_LINE:
1637                                                 if (ast_channel_connected_line_sub(in, o->chan, f, 1) &&
1638                                                         ast_channel_connected_line_macro(in, o->chan, f, 0, 1)) {
1639                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1640                                                 }
1641                                                 break;
1642                                         case AST_CONTROL_REDIRECTING:
1643                                                 if (ast_channel_redirecting_sub(in, o->chan, f, 1) &&
1644                                                         ast_channel_redirecting_macro(in, o->chan, f, 0, 1)) {
1645                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1646                                                 }
1647                                                 break;
1648                                         default:
1649                                                 /* We are not going to do anything with this frame. */
1650                                                 goto skip_frame;
1651                                         }
1652                                         break;
1653                                 default:
1654                                         /* We are not going to do anything with this frame. */
1655                                         goto skip_frame;
1656                                 }
1657                         }
1658 skip_frame:;
1659                         ast_frfree(f);
1660                 }
1661         }
1662
1663         if (!*to || ast_check_hangup(in)) {
1664                 ast_verb(3, "Nobody picked up in %d ms\n", orig);
1665                 publish_dial_end_event(in, out_chans, NULL, "NOANSWER");
1666         }
1667
1668 #ifdef HAVE_EPOLL
1669         AST_LIST_TRAVERSE(out_chans, epollo, node) {
1670                 if (epollo->chan)
1671                         ast_poll_channel_del(in, epollo->chan);
1672         }
1673 #endif
1674
1675         if (is_cc_recall) {
1676                 ast_cc_completed(in, "Recall completed!");
1677         }
1678         return peer;
1679 }
1680
1681 static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str **featurecode)
1682 {
1683         char disconnect_code[AST_FEATURE_MAX_LEN];
1684         int res;
1685
1686         ast_str_append(featurecode, 1, "%c", code);
1687
1688         res = ast_get_builtin_feature(chan, "disconnect", disconnect_code, sizeof(disconnect_code));
1689         if (res) {
1690                 ast_str_reset(*featurecode);
1691                 return 0;
1692         }
1693
1694         if (strlen(disconnect_code) > ast_str_strlen(*featurecode)) {
1695                 /* Could be a partial match, anyway */
1696                 if (strncmp(disconnect_code, ast_str_buffer(*featurecode), ast_str_strlen(*featurecode))) {
1697                         ast_str_reset(*featurecode);
1698                 }
1699                 return 0;
1700         }
1701
1702         if (strcmp(disconnect_code, ast_str_buffer(*featurecode))) {
1703                 ast_str_reset(*featurecode);
1704                 return 0;
1705         }
1706
1707         return 1;
1708 }
1709
1710 /* returns true if there is a valid privacy reply */
1711 static int valid_priv_reply(struct ast_flags64 *opts, int res)
1712 {
1713         if (res < '1')
1714                 return 0;
1715         if (ast_test_flag64(opts, OPT_PRIVACY) && res <= '5')
1716                 return 1;
1717         if (ast_test_flag64(opts, OPT_SCREENING) && res <= '4')
1718                 return 1;
1719         return 0;
1720 }
1721
1722 static int do_privacy(struct ast_channel *chan, struct ast_channel *peer,
1723         struct ast_flags64 *opts, char **opt_args, struct privacy_args *pa)
1724 {
1725
1726         int res2;
1727         int loopcount = 0;
1728
1729         /* Get the user's intro, store it in priv-callerintros/$CID,
1730            unless it is already there-- this should be done before the
1731            call is actually dialed  */
1732
1733         /* all ring indications and moh for the caller has been halted as soon as the
1734            target extension was picked up. We are going to have to kill some
1735            time and make the caller believe the peer hasn't picked up yet */
1736
1737         if (ast_test_flag64(opts, OPT_MUSICBACK) && !ast_strlen_zero(opt_args[OPT_ARG_MUSICBACK])) {
1738                 char *original_moh = ast_strdupa(ast_channel_musicclass(chan));
1739                 ast_indicate(chan, -1);
1740                 ast_channel_musicclass_set(chan, opt_args[OPT_ARG_MUSICBACK]);
1741                 ast_moh_start(chan, opt_args[OPT_ARG_MUSICBACK], NULL);
1742                 ast_channel_musicclass_set(chan, original_moh);
1743         } else if (ast_test_flag64(opts, OPT_RINGBACK) || ast_test_flag64(opts, OPT_RING_WITH_EARLY_MEDIA)) {
1744                 ast_indicate(chan, AST_CONTROL_RINGING);
1745                 pa->sentringing++;
1746         }
1747
1748         /* Start autoservice on the other chan ?? */
1749         res2 = ast_autoservice_start(chan);
1750         /* Now Stream the File */
1751         for (loopcount = 0; loopcount < 3; loopcount++) {
1752                 if (res2 && loopcount == 0) /* error in ast_autoservice_start() */
1753                         break;
1754                 if (!res2) /* on timeout, play the message again */
1755                         res2 = ast_play_and_wait(peer, "priv-callpending");
1756                 if (!valid_priv_reply(opts, res2))
1757                         res2 = 0;
1758                 /* priv-callpending script:
1759                    "I have a caller waiting, who introduces themselves as:"
1760                 */
1761                 if (!res2)
1762                         res2 = ast_play_and_wait(peer, pa->privintro);
1763                 if (!valid_priv_reply(opts, res2))
1764                         res2 = 0;
1765                 /* now get input from the called party, as to their choice */
1766                 if (!res2) {
1767                         /* XXX can we have both, or they are mutually exclusive ? */
1768                         if (ast_test_flag64(opts, OPT_PRIVACY))
1769                                 res2 = ast_play_and_wait(peer, "priv-callee-options");
1770                         if (ast_test_flag64(opts, OPT_SCREENING))
1771                                 res2 = ast_play_and_wait(peer, "screen-callee-options");
1772                 }
1773
1774                 /*! \page DialPrivacy Dial Privacy scripts
1775                  * \par priv-callee-options script:
1776                  * \li Dial 1 if you wish this caller to reach you directly in the future,
1777                  *      and immediately connect to their incoming call.
1778                  * \li Dial 2 if you wish to send this caller to voicemail now and forevermore.
1779                  * \li Dial 3 to send this caller to the torture menus, now and forevermore.
1780                  * \li Dial 4 to send this caller to a simple "go away" menu, now and forevermore.
1781                  * \li Dial 5 to allow this caller to come straight thru to you in the future,
1782                  *      but right now, just this once, send them to voicemail.
1783                  *
1784                  * \par screen-callee-options script:
1785                  * \li Dial 1 if you wish to immediately connect to the incoming call
1786                  * \li Dial 2 if you wish to send this caller to voicemail.
1787                  * \li Dial 3 to send this caller to the torture menus.
1788                  * \li Dial 4 to send this caller to a simple "go away" menu.
1789                  */
1790                 if (valid_priv_reply(opts, res2))
1791                         break;
1792                 /* invalid option */
1793                 res2 = ast_play_and_wait(peer, "vm-sorry");
1794         }
1795
1796         if (ast_test_flag64(opts, OPT_MUSICBACK)) {
1797                 ast_moh_stop(chan);
1798         } else if (ast_test_flag64(opts, OPT_RINGBACK) || ast_test_flag64(opts, OPT_RING_WITH_EARLY_MEDIA)) {
1799                 ast_indicate(chan, -1);
1800                 pa->sentringing = 0;
1801         }
1802         ast_autoservice_stop(chan);
1803         if (ast_test_flag64(opts, OPT_PRIVACY) && (res2 >= '1' && res2 <= '5')) {
1804                 /* map keypresses to various things, the index is res2 - '1' */
1805                 static const char * const _val[] = { "ALLOW", "DENY", "TORTURE", "KILL", "ALLOW" };
1806                 static const int _flag[] = { AST_PRIVACY_ALLOW, AST_PRIVACY_DENY, AST_PRIVACY_TORTURE, AST_PRIVACY_KILL, AST_PRIVACY_ALLOW};
1807                 int i = res2 - '1';
1808                 ast_verb(3, "--Set privacy database entry %s/%s to %s\n",
1809                         opt_args[OPT_ARG_PRIVACY], pa->privcid, _val[i]);
1810                 ast_privacy_set(opt_args[OPT_ARG_PRIVACY], pa->privcid, _flag[i]);
1811         }
1812         switch (res2) {
1813         case '1':
1814                 break;
1815         case '2':
1816                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1817                 break;
1818         case '3':
1819                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1820                 break;
1821         case '4':
1822                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1823                 break;
1824         case '5':
1825                 /* XXX should we set status to DENY ? */
1826                 if (ast_test_flag64(opts, OPT_PRIVACY))
1827                         break;
1828                 /* if not privacy, then 5 is the same as "default" case */
1829         default: /* bad input or -1 if failure to start autoservice */
1830                 /* well, if the user messes up, ... he had his chance... What Is The Best Thing To Do?  */
1831                 /* well, there seems basically two choices. Just patch the caller thru immediately,
1832                           or,... put 'em thru to voicemail. */
1833                 /* since the callee may have hung up, let's do the voicemail thing, no database decision */
1834                 ast_log(LOG_NOTICE, "privacy: no valid response from the callee. Sending the caller to voicemail, the callee isn't responding\n");
1835                 /* XXX should we set status to DENY ? */
1836                 /* XXX what about the privacy flags ? */
1837                 break;
1838         }
1839
1840         if (res2 == '1') { /* the only case where we actually connect */
1841                 /* if the intro is NOCALLERID, then there's no reason to leave it on disk, it'll
1842                    just clog things up, and it's not useful information, not being tied to a CID */
1843                 if (strncmp(pa->privcid, "NOCALLERID", 10) == 0 || ast_test_flag64(opts, OPT_SCREEN_NOINTRO)) {
1844                         ast_filedelete(pa->privintro, NULL);
1845                         if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1846                                 ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1847                         else
1848                                 ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1849                 }
1850                 return 0; /* the good exit path */
1851         } else {
1852                 /* hang up on the callee -- he didn't want to talk anyway! */
1853                 ast_autoservice_chan_hangup_peer(chan, peer);
1854                 return -1;
1855         }
1856 }
1857
1858 /*! \brief returns 1 if successful, 0 or <0 if the caller should 'goto out' */
1859 static int setup_privacy_args(struct privacy_args *pa,
1860         struct ast_flags64 *opts, char *opt_args[], struct ast_channel *chan)
1861 {
1862         char callerid[60];
1863         int res;
1864         char *l;
1865
1866         if (ast_channel_caller(chan)->id.number.valid
1867                 && !ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
1868                 l = ast_strdupa(ast_channel_caller(chan)->id.number.str);
1869                 ast_shrink_phone_number(l);
1870                 if (ast_test_flag64(opts, OPT_PRIVACY) ) {
1871                         ast_verb(3, "Privacy DB is '%s', clid is '%s'\n", opt_args[OPT_ARG_PRIVACY], l);
1872                         pa->privdb_val = ast_privacy_check(opt_args[OPT_ARG_PRIVACY], l);
1873                 } else {
1874                         ast_verb(3, "Privacy Screening, clid is '%s'\n", l);
1875                         pa->privdb_val = AST_PRIVACY_UNKNOWN;
1876                 }
1877         } else {
1878                 char *tnam, *tn2;
1879
1880                 tnam = ast_strdupa(ast_channel_name(chan));
1881                 /* clean the channel name so slashes don't try to end up in disk file name */
1882                 for (tn2 = tnam; *tn2; tn2++) {
1883                         if (*tn2 == '/')  /* any other chars to be afraid of? */
1884                                 *tn2 = '=';
1885                 }
1886                 ast_verb(3, "Privacy-- callerid is empty\n");
1887
1888                 snprintf(callerid, sizeof(callerid), "NOCALLERID_%s%s", ast_channel_exten(chan), tnam);
1889                 l = callerid;
1890                 pa->privdb_val = AST_PRIVACY_UNKNOWN;
1891         }
1892
1893         ast_copy_string(pa->privcid, l, sizeof(pa->privcid));
1894
1895         if (strncmp(pa->privcid, "NOCALLERID", 10) != 0 && ast_test_flag64(opts, OPT_SCREEN_NOCALLERID)) {
1896                 /* if callerid is set and OPT_SCREEN_NOCALLERID is set also */
1897                 ast_verb(3, "CallerID set (%s); N option set; Screening should be off\n", pa->privcid);
1898                 pa->privdb_val = AST_PRIVACY_ALLOW;
1899         } else if (ast_test_flag64(opts, OPT_SCREEN_NOCALLERID) && strncmp(pa->privcid, "NOCALLERID", 10) == 0) {
1900                 ast_verb(3, "CallerID blank; N option set; Screening should happen; dbval is %d\n", pa->privdb_val);
1901         }
1902
1903         if (pa->privdb_val == AST_PRIVACY_DENY) {
1904                 ast_verb(3, "Privacy DB reports PRIVACY_DENY for this callerid. Dial reports unavailable\n");
1905                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1906                 return 0;
1907         } else if (pa->privdb_val == AST_PRIVACY_KILL) {
1908                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1909                 return 0; /* Is this right? */
1910         } else if (pa->privdb_val == AST_PRIVACY_TORTURE) {
1911                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1912                 return 0; /* is this right??? */
1913         } else if (pa->privdb_val == AST_PRIVACY_UNKNOWN) {
1914                 /* Get the user's intro, store it in priv-callerintros/$CID,
1915                    unless it is already there-- this should be done before the
1916                    call is actually dialed  */
1917
1918                 /* make sure the priv-callerintros dir actually exists */
1919                 snprintf(pa->privintro, sizeof(pa->privintro), "%s/sounds/priv-callerintros", ast_config_AST_DATA_DIR);
1920                 if ((res = ast_mkdir(pa->privintro, 0755))) {
1921                         ast_log(LOG_WARNING, "privacy: can't create directory priv-callerintros: %s\n", strerror(res));
1922                         return -1;
1923                 }
1924
1925                 snprintf(pa->privintro, sizeof(pa->privintro), "priv-callerintros/%s", pa->privcid);
1926                 if (ast_fileexists(pa->privintro, NULL, NULL ) > 0 && strncmp(pa->privcid, "NOCALLERID", 10) != 0) {
1927                         /* the DELUX version of this code would allow this caller the
1928                            option to hear and retape their previously recorded intro.
1929                         */
1930                 } else {
1931                         int duration; /* for feedback from play_and_wait */
1932                         /* the file doesn't exist yet. Let the caller submit his
1933                            vocal intro for posterity */
1934                         /* priv-recordintro script:
1935
1936                            "At the tone, please say your name:"
1937
1938                         */
1939                         int silencethreshold = ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE);
1940                         ast_answer(chan);
1941                         res = ast_play_and_record(chan, "priv-recordintro", pa->privintro, 4, "sln", &duration, NULL, silencethreshold, 2000, 0);  /* NOTE: I've reduced the total time to 4 sec */
1942                                                                         /* don't think we'll need a lock removed, we took care of
1943                                                                            conflicts by naming the pa.privintro file */
1944                         if (res == -1) {
1945                                 /* Delete the file regardless since they hung up during recording */
1946                                 ast_filedelete(pa->privintro, NULL);
1947                                 if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1948                                         ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1949                                 else
1950                                         ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1951                                 return -1;
1952                         }
1953                         if (!ast_streamfile(chan, "vm-dialout", ast_channel_language(chan)) )
1954                                 ast_waitstream(chan, "");
1955                 }
1956         }
1957         return 1; /* success */
1958 }
1959
1960 static void end_bridge_callback(void *data)
1961 {
1962         char buf[80];
1963         time_t end;
1964         struct ast_channel *chan = data;
1965
1966         time(&end);
1967
1968         ast_channel_lock(chan);
1969         ast_channel_stage_snapshot(chan);
1970         snprintf(buf, sizeof(buf), "%d", ast_channel_get_up_time(chan));
1971         pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", buf);
1972         snprintf(buf, sizeof(buf), "%d", ast_channel_get_duration(chan));
1973         pbx_builtin_setvar_helper(chan, "DIALEDTIME", buf);
1974         ast_channel_stage_snapshot_done(chan);
1975         ast_channel_unlock(chan);
1976 }
1977
1978 static void end_bridge_callback_data_fixup(struct ast_bridge_config *bconfig, struct ast_channel *originator, struct ast_channel *terminator) {
1979         bconfig->end_bridge_callback_data = originator;
1980 }
1981
1982 static int dial_handle_playtones(struct ast_channel *chan, const char *data)
1983 {
1984         struct ast_tone_zone_sound *ts = NULL;
1985         int res;
1986         const char *str = data;
1987
1988         if (ast_strlen_zero(str)) {
1989                 ast_debug(1,"Nothing to play\n");
1990                 return -1;
1991         }
1992
1993         ts = ast_get_indication_tone(ast_channel_zone(chan), str);
1994
1995         if (ts && ts->data[0]) {
1996                 res = ast_playtones_start(chan, 0, ts->data, 0);
1997         } else {
1998                 res = -1;
1999         }
2000
2001         if (ts) {
2002                 ts = ast_tone_zone_sound_unref(ts);
2003         }
2004
2005         if (res) {
2006                 ast_log(LOG_WARNING, "Unable to start playtone \'%s\'\n", str);
2007         }
2008
2009         return res;
2010 }
2011
2012 /*!
2013  * \internal
2014  * \brief Setup the after bridge goto location on the peer.
2015  * \since 12.0.0
2016  *
2017  * \param chan Calling channel for bridge.
2018  * \param peer Peer channel for bridge.
2019  * \param opts Dialing option flags.
2020  * \param opt_args Dialing option argument strings.
2021  *
2022  * \return Nothing
2023  */
2024 static void setup_peer_after_bridge_goto(struct ast_channel *chan, struct ast_channel *peer, struct ast_flags64 *opts, char *opt_args[])
2025 {
2026         const char *context;
2027         const char *extension;
2028         int priority;
2029
2030         if (ast_test_flag64(opts, OPT_PEER_H)) {
2031                 ast_channel_lock(chan);
2032                 context = ast_strdupa(ast_channel_context(chan));
2033                 ast_channel_unlock(chan);
2034                 ast_bridge_set_after_h(peer, context);
2035         } else if (ast_test_flag64(opts, OPT_CALLEE_GO_ON)) {
2036                 ast_channel_lock(chan);
2037                 context = ast_strdupa(ast_channel_context(chan));
2038                 extension = ast_strdupa(ast_channel_exten(chan));
2039                 priority = ast_channel_priority(chan);
2040                 ast_channel_unlock(chan);
2041                 ast_bridge_set_after_go_on(peer, context, extension, priority,
2042                         opt_args[OPT_ARG_CALLEE_GO_ON]);
2043         }
2044 }
2045
2046 static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)
2047 {
2048         int res = -1; /* default: error */
2049         char *rest, *cur; /* scan the list of destinations */
2050         struct dial_head out_chans = AST_LIST_HEAD_NOLOCK_INIT_VALUE; /* list of destinations */
2051         struct chanlist *outgoing;
2052         struct chanlist *tmp;
2053         struct ast_channel *peer;
2054         int to; /* timeout */
2055         struct cause_args num = { chan, 0, 0, 0 };
2056         int cause;
2057
2058         struct ast_bridge_config config = { { 0, } };
2059         struct timeval calldurationlimit = { 0, };
2060         char *dtmfcalled = NULL, *dtmfcalling = NULL, *dtmf_progress=NULL;
2061         struct privacy_args pa = {
2062                 .sentringing = 0,
2063                 .privdb_val = 0,
2064                 .status = "INVALIDARGS",
2065         };
2066         int sentringing = 0, moh = 0;
2067         const char *outbound_group = NULL;
2068         int result = 0;
2069         char *parse;
2070         int opermode = 0;
2071         int delprivintro = 0;
2072         AST_DECLARE_APP_ARGS(args,
2073                 AST_APP_ARG(peers);
2074                 AST_APP_ARG(timeout);
2075                 AST_APP_ARG(options);
2076                 AST_APP_ARG(url);
2077         );
2078         struct ast_flags64 opts = { 0, };
2079         char *opt_args[OPT_ARG_ARRAY_SIZE];
2080         int fulldial = 0, num_dialed = 0;
2081         int ignore_cc = 0;
2082         char device_name[AST_CHANNEL_NAME];
2083         char forced_clid_name[AST_MAX_EXTENSION];
2084         char stored_clid_name[AST_MAX_EXTENSION];
2085         int force_forwards_only;        /*!< TRUE if force CallerID on call forward only. Legacy behaviour.*/
2086         /*!
2087          * \brief Forced CallerID party information to send.
2088          * \note This will not have any malloced strings so do not free it.
2089          */
2090         struct ast_party_id forced_clid;
2091         /*!
2092          * \brief Stored CallerID information if needed.
2093          *
2094          * \note If OPT_ORIGINAL_CLID set then this is the o option
2095          * CallerID.  Otherwise it is the dialplan extension and hint
2096          * name.
2097          *
2098          * \note This will not have any malloced strings so do not free it.
2099          */
2100         struct ast_party_id stored_clid;
2101         /*!
2102          * \brief CallerID party information to store.
2103          * \note This will not have any malloced strings so do not free it.
2104          */
2105         struct ast_party_caller caller;
2106         int max_forwards;
2107
2108         /* Reset all DIAL variables back to blank, to prevent confusion (in case we don't reset all of them). */
2109         ast_channel_lock(chan);
2110         ast_channel_stage_snapshot(chan);
2111         pbx_builtin_setvar_helper(chan, "DIALSTATUS", "");
2112         pbx_builtin_setvar_helper(chan, "DIALEDPEERNUMBER", "");
2113         pbx_builtin_setvar_helper(chan, "DIALEDPEERNAME", "");
2114         pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", "");
2115         pbx_builtin_setvar_helper(chan, "DIALEDTIME", "");
2116         ast_channel_stage_snapshot_done(chan);
2117         max_forwards = ast_max_forwards_get(chan);
2118         ast_channel_unlock(chan);
2119
2120         if (max_forwards <= 0) {
2121                 ast_log(LOG_WARNING, "Cannot place outbound call from channel '%s'. Max forwards exceeded\n",
2122                                 ast_channel_name(chan));
2123                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", "BUSY");
2124                 return -1;
2125         }
2126
2127         if (ast_strlen_zero(data)) {
2128                 ast_log(LOG_WARNING, "Dial requires an argument (technology/resource)\n");
2129                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2130                 return -1;
2131         }
2132
2133         parse = ast_strdupa(data);
2134
2135         AST_STANDARD_APP_ARGS(args, parse);
2136
2137         if (!ast_strlen_zero(args.options) &&
2138                 ast_app_parse_options64(dial_exec_options, &opts, opt_args, args.options)) {
2139                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2140                 goto done;
2141         }
2142
2143         if (ast_strlen_zero(args.peers)) {
2144                 ast_log(LOG_WARNING, "Dial requires an argument (technology/resource)\n");
2145                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2146                 goto done;
2147         }
2148
2149         if (ast_cc_call_init(chan, &ignore_cc)) {
2150                 goto done;
2151         }
2152
2153         if (ast_test_flag64(&opts, OPT_SCREEN_NOINTRO) && !ast_strlen_zero(opt_args[OPT_ARG_SCREEN_NOINTRO])) {
2154                 delprivintro = atoi(opt_args[OPT_ARG_SCREEN_NOINTRO]);
2155
2156                 if (delprivintro < 0 || delprivintro > 1) {
2157                         ast_log(LOG_WARNING, "Unknown argument %d specified to n option, ignoring\n", delprivintro);
2158                         delprivintro = 0;
2159                 }
2160         }
2161
2162         if (!ast_test_flag64(&opts, OPT_RINGBACK)) {
2163                 opt_args[OPT_ARG_RINGBACK] = NULL;
2164         }
2165
2166         if (ast_test_flag64(&opts, OPT_OPERMODE)) {
2167                 opermode = ast_strlen_zero(opt_args[OPT_ARG_OPERMODE]) ? 1 : atoi(opt_args[OPT_ARG_OPERMODE]);
2168                 ast_verb(3, "Setting operator services mode to %d.\n", opermode);
2169         }
2170
2171         if (ast_test_flag64(&opts, OPT_DURATION_STOP) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_STOP])) {
2172                 calldurationlimit.tv_sec = atoi(opt_args[OPT_ARG_DURATION_STOP]);
2173                 if (!calldurationlimit.tv_sec) {
2174                         ast_log(LOG_WARNING, "Dial does not accept S(%s), hanging up.\n", opt_args[OPT_ARG_DURATION_STOP]);
2175                         pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2176                         goto done;
2177                 }
2178                 ast_verb(3, "Setting call duration limit to %.3lf seconds.\n", calldurationlimit.tv_sec + calldurationlimit.tv_usec / 1000000.0);
2179         }
2180
2181         if (ast_test_flag64(&opts, OPT_SENDDTMF) && !ast_strlen_zero(opt_args[OPT_ARG_SENDDTMF])) {
2182                 dtmf_progress = opt_args[OPT_ARG_SENDDTMF];
2183                 dtmfcalled = strsep(&dtmf_progress, ":");
2184                 dtmfcalling = strsep(&dtmf_progress, ":");
2185         }
2186
2187         if (ast_test_flag64(&opts, OPT_DURATION_LIMIT) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_LIMIT])) {
2188                 if (ast_bridge_timelimit(chan, &config, opt_args[OPT_ARG_DURATION_LIMIT], &calldurationlimit))
2189                         goto done;
2190         }
2191
2192         /* Setup the forced CallerID information to send if used. */
2193         ast_party_id_init(&forced_clid);
2194         force_forwards_only = 0;
2195         if (ast_test_flag64(&opts, OPT_FORCECLID)) {
2196                 if (ast_strlen_zero(opt_args[OPT_ARG_FORCECLID])) {
2197                         ast_channel_lock(chan);
2198                         forced_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2199                         ast_channel_unlock(chan);
2200                         forced_clid_name[0] = '\0';
2201                         forced_clid.name.str = (char *) get_cid_name(forced_clid_name,
2202                                 sizeof(forced_clid_name), chan);
2203                         force_forwards_only = 1;
2204                 } else {
2205                         /* Note: The opt_args[OPT_ARG_FORCECLID] string value is altered here. */
2206                         ast_callerid_parse(opt_args[OPT_ARG_FORCECLID], &forced_clid.name.str,
2207                                 &forced_clid.number.str);
2208                 }
2209                 if (!ast_strlen_zero(forced_clid.name.str)) {
2210                         forced_clid.name.valid = 1;
2211                 }
2212                 if (!ast_strlen_zero(forced_clid.number.str)) {
2213                         forced_clid.number.valid = 1;
2214                 }
2215         }
2216         if (ast_test_flag64(&opts, OPT_FORCE_CID_TAG)
2217                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_TAG])) {
2218                 forced_clid.tag = opt_args[OPT_ARG_FORCE_CID_TAG];
2219         }
2220         forced_clid.number.presentation = AST_PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN;
2221         if (ast_test_flag64(&opts, OPT_FORCE_CID_PRES)
2222                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_PRES])) {
2223                 int pres;
2224
2225                 pres = ast_parse_caller_presentation(opt_args[OPT_ARG_FORCE_CID_PRES]);
2226                 if (0 <= pres) {
2227                         forced_clid.number.presentation = pres;
2228                 }
2229         }
2230
2231         /* Setup the stored CallerID information if needed. */
2232         ast_party_id_init(&stored_clid);
2233         if (ast_test_flag64(&opts, OPT_ORIGINAL_CLID)) {
2234                 if (ast_strlen_zero(opt_args[OPT_ARG_ORIGINAL_CLID])) {
2235                         ast_channel_lock(chan);
2236                         ast_party_id_set_init(&stored_clid, &ast_channel_caller(chan)->id);
2237                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.name.str)) {
2238                                 stored_clid.name.str = ast_strdupa(ast_channel_caller(chan)->id.name.str);
2239                         }
2240                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
2241                                 stored_clid.number.str = ast_strdupa(ast_channel_caller(chan)->id.number.str);
2242                         }
2243                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.subaddress.str)) {
2244                                 stored_clid.subaddress.str = ast_strdupa(ast_channel_caller(chan)->id.subaddress.str);
2245                         }
2246                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.tag)) {
2247                                 stored_clid.tag = ast_strdupa(ast_channel_caller(chan)->id.tag);
2248                         }
2249                         ast_channel_unlock(chan);
2250                 } else {
2251                         /* Note: The opt_args[OPT_ARG_ORIGINAL_CLID] string value is altered here. */
2252                         ast_callerid_parse(opt_args[OPT_ARG_ORIGINAL_CLID], &stored_clid.name.str,
2253                                 &stored_clid.number.str);
2254                         if (!ast_strlen_zero(stored_clid.name.str)) {
2255                                 stored_clid.name.valid = 1;
2256                         }
2257                         if (!ast_strlen_zero(stored_clid.number.str)) {
2258                                 stored_clid.number.valid = 1;
2259                         }
2260                 }
2261         } else {
2262                 /*
2263                  * In case the new channel has no preset CallerID number by the
2264                  * channel driver, setup the dialplan extension and hint name.
2265                  */
2266                 stored_clid_name[0] = '\0';
2267                 stored_clid.name.str = (char *) get_cid_name(stored_clid_name,
2268                         sizeof(stored_clid_name), chan);
2269                 if (ast_strlen_zero(stored_clid.name.str)) {
2270                         stored_clid.name.str = NULL;
2271                 } else {
2272                         stored_clid.name.valid = 1;
2273                 }
2274                 ast_channel_lock(chan);
2275                 stored_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2276                 stored_clid.number.valid = 1;
2277                 ast_channel_unlock(chan);
2278         }
2279
2280         if (ast_test_flag64(&opts, OPT_RESETCDR)) {
2281                 ast_cdr_reset(ast_channel_name(chan), 0);
2282         }
2283         if (ast_test_flag64(&opts, OPT_PRIVACY) && ast_strlen_zero(opt_args[OPT_ARG_PRIVACY]))
2284                 opt_args[OPT_ARG_PRIVACY] = ast_strdupa(ast_channel_exten(chan));
2285
2286         if (ast_test_flag64(&opts, OPT_PRIVACY) || ast_test_flag64(&opts, OPT_SCREENING)) {
2287                 res = setup_privacy_args(&pa, &opts, opt_args, chan);
2288                 if (res <= 0)
2289                         goto out;
2290                 res = -1; /* reset default */
2291         }
2292
2293         if (continue_exec)
2294                 *continue_exec = 0;
2295
2296         /* If a channel group has been specified, get it for use when we create peer channels */
2297
2298         ast_channel_lock(chan);
2299         if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP_ONCE"))) {
2300                 outbound_group = ast_strdupa(outbound_group);
2301                 pbx_builtin_setvar_helper(chan, "OUTBOUND_GROUP_ONCE", NULL);
2302         } else if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP"))) {
2303                 outbound_group = ast_strdupa(outbound_group);
2304         }
2305         ast_channel_unlock(chan);
2306
2307         /* Set per dial instance flags.  These flags are also passed back to RetryDial. */
2308         ast_copy_flags64(peerflags, &opts, OPT_DTMF_EXIT | OPT_GO_ON | OPT_ORIGINAL_CLID
2309                 | OPT_CALLER_HANGUP | OPT_IGNORE_FORWARDING | OPT_CANCEL_TIMEOUT
2310                 | OPT_ANNOUNCE | OPT_CALLEE_MACRO | OPT_CALLEE_GOSUB | OPT_FORCECLID);
2311
2312         /* PREDIAL: Run gosub on the caller's channel */
2313         if (ast_test_flag64(&opts, OPT_PREDIAL_CALLER)
2314                 && !ast_strlen_zero(opt_args[OPT_ARG_PREDIAL_CALLER])) {
2315                 ast_replace_subargument_delimiter(opt_args[OPT_ARG_PREDIAL_CALLER]);
2316                 ast_app_exec_sub(NULL, chan, opt_args[OPT_ARG_PREDIAL_CALLER], 0);
2317         }
2318
2319         /* loop through the list of dial destinations */
2320         rest = args.peers;
2321         while ((cur = strsep(&rest, "&")) ) {
2322                 struct ast_channel *tc; /* channel for this destination */
2323                 /* Get a technology/resource pair */
2324                 char *number = cur;
2325                 char *tech = strsep(&number, "/");
2326                 size_t tech_len;
2327                 size_t number_len;
2328                 struct ast_format_cap *nativeformats;
2329
2330                 num_dialed++;
2331                 if (ast_strlen_zero(number)) {
2332                         ast_log(LOG_WARNING, "Dial argument takes format (technology/resource)\n");
2333                         goto out;
2334                 }
2335
2336                 tech_len = strlen(tech) + 1;
2337                 number_len = strlen(number) + 1;
2338                 tmp = ast_calloc(1, sizeof(*tmp) + (2 * tech_len) + number_len);
2339                 if (!tmp) {
2340                         goto out;
2341                 }
2342
2343                 /* Save tech, number, and interface. */
2344                 cur = tmp->stuff;
2345                 strcpy(cur, tech);
2346                 tmp->tech = cur;
2347                 cur += tech_len;
2348                 strcpy(cur, tech);
2349                 cur[tech_len - 1] = '/';
2350                 tmp->interface = cur;
2351                 cur += tech_len;
2352                 strcpy(cur, number);
2353                 tmp->number = cur;
2354
2355                 if (opts.flags) {
2356                         /* Set per outgoing call leg options. */
2357                         ast_copy_flags64(tmp, &opts,
2358                                 OPT_CANCEL_ELSEWHERE |
2359                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
2360                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
2361                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
2362                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
2363                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
2364                                 OPT_RINGBACK | OPT_MUSICBACK | OPT_FORCECLID | OPT_IGNORE_CONNECTEDLINE |
2365                                 OPT_RING_WITH_EARLY_MEDIA);
2366                         ast_set2_flag64(tmp, args.url, DIAL_NOFORWARDHTML);
2367                 }
2368
2369                 /* Request the peer */
2370
2371                 ast_channel_lock(chan);
2372                 /*
2373                  * Seed the chanlist's connected line information with previously
2374                  * acquired connected line info from the incoming channel.  The
2375                  * previously acquired connected line info could have been set
2376                  * through the CONNECTED_LINE dialplan function.
2377                  */
2378                 ast_party_connected_line_copy(&tmp->connected, ast_channel_connected(chan));
2379
2380                 nativeformats = ao2_bump(ast_channel_nativeformats(chan));
2381
2382                 ast_channel_unlock(chan);
2383
2384                 tc = ast_request(tmp->tech, nativeformats, NULL, chan, tmp->number, &cause);
2385
2386                 ao2_cleanup(nativeformats);
2387
2388                 if (!tc) {
2389                         /* If we can't, just go on to the next call */
2390                         ast_log(LOG_WARNING, "Unable to create channel of type '%s' (cause %d - %s)\n",
2391                                 tmp->tech, cause, ast_cause2str(cause));
2392                         handle_cause(cause, &num);
2393                         if (!rest) {
2394                                 /* we are on the last destination */
2395                                 ast_channel_hangupcause_set(chan, cause);
2396                         }
2397                         if (!ignore_cc && (cause == AST_CAUSE_BUSY || cause == AST_CAUSE_CONGESTION)) {
2398                                 if (!ast_cc_callback(chan, tmp->tech, tmp->number, ast_cc_busy_interface)) {
2399                                         ast_cc_extension_monitor_add_dialstring(chan, tmp->interface, "");
2400                                 }
2401                         }
2402                         chanlist_free(tmp);
2403                         continue;
2404                 }
2405
2406                 ast_channel_lock(tc);
2407                 ast_channel_stage_snapshot(tc);
2408                 ast_channel_unlock(tc);
2409
2410                 ast_channel_get_device_name(tc, device_name, sizeof(device_name));
2411                 if (!ignore_cc) {
2412                         ast_cc_extension_monitor_add_dialstring(chan, tmp->interface, device_name);
2413                 }
2414
2415                 ast_channel_lock_both(tc, chan);
2416                 pbx_builtin_setvar_helper(tc, "DIALEDPEERNUMBER", tmp->number);
2417
2418                 /* Setup outgoing SDP to match incoming one */
2419                 if (!AST_LIST_FIRST(&out_chans) && !rest && CAN_EARLY_BRIDGE(peerflags, chan, tc)) {
2420                         /* We are on the only destination. */
2421                         ast_rtp_instance_early_bridge_make_compatible(tc, chan);
2422                 }
2423
2424                 /* Inherit specially named variables from parent channel */
2425                 ast_channel_inherit_variables(chan, tc);
2426                 ast_channel_datastore_inherit(chan, tc);
2427                 ast_max_forwards_decrement(tc);
2428
2429                 ast_channel_appl_set(tc, "AppDial");
2430                 ast_channel_data_set(tc, "(Outgoing Line)");
2431                 ast_channel_publish_snapshot(tc);
2432
2433                 memset(ast_channel_whentohangup(tc), 0, sizeof(*ast_channel_whentohangup(tc)));
2434
2435                 /* Determine CallerID to store in outgoing channel. */
2436                 ast_party_caller_set_init(&caller, ast_channel_caller(tc));
2437                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
2438                         caller.id = stored_clid;
2439                         ast_channel_set_caller_event(tc, &caller, NULL);
2440                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2441                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.number.valid,
2442                         ast_channel_caller(tc)->id.number.str, NULL))) {
2443                         /*
2444                          * The new channel has no preset CallerID number by the channel
2445                          * driver.  Use the dialplan extension and hint name.
2446                          */
2447                         caller.id = stored_clid;
2448                         if (!caller.id.name.valid
2449                                 && !ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2450                                         ast_channel_connected(chan)->id.name.str, NULL))) {
2451                                 /*
2452                                  * No hint name available.  We have a connected name supplied by
2453                                  * the dialplan we can use instead.
2454                                  */
2455                                 caller.id.name.valid = 1;
2456                                 caller.id.name = ast_channel_connected(chan)->id.name;
2457                         }
2458                         ast_channel_set_caller_event(tc, &caller, NULL);
2459                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2460                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.name.valid, ast_channel_caller(tc)->id.name.str,
2461                         NULL))) {
2462                         /* The new channel has no preset CallerID name by the channel driver. */
2463                         if (!ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2464                                 ast_channel_connected(chan)->id.name.str, NULL))) {
2465                                 /*
2466                                  * We have a connected name supplied by the dialplan we can
2467                                  * use instead.
2468                                  */
2469                                 caller.id.name.valid = 1;
2470                                 caller.id.name = ast_channel_connected(chan)->id.name;
2471                                 ast_channel_set_caller_event(tc, &caller, NULL);
2472                         }
2473                 }
2474
2475                 /* Determine CallerID for outgoing channel to send. */
2476                 if (ast_test_flag64(peerflags, OPT_FORCECLID) && !force_forwards_only) {
2477                         struct ast_party_connected_line connected;
2478
2479                         ast_party_connected_line_set_init(&connected, ast_channel_connected(tc));
2480                         connected.id = forced_clid;
2481                         ast_channel_set_connected_line(tc, &connected, NULL);
2482                 } else {
2483                         ast_connected_line_copy_from_caller(ast_channel_connected(tc), ast_channel_caller(chan));
2484                 }
2485
2486                 ast_party_redirecting_copy(ast_channel_redirecting(tc), ast_channel_redirecting(chan));
2487
2488                 ast_channel_dialed(tc)->transit_network_select = ast_channel_dialed(chan)->transit_network_select;
2489
2490                 ast_channel_req_accountcodes(tc, chan, AST_CHANNEL_REQUESTOR_BRIDGE_PEER);
2491                 if (ast_strlen_zero(ast_channel_musicclass(tc))) {
2492                         ast_channel_musicclass_set(tc, ast_channel_musicclass(chan));
2493                 }
2494
2495                 /* Pass ADSI CPE and transfer capability */
2496                 ast_channel_adsicpe_set(tc, ast_channel_adsicpe(chan));
2497                 ast_channel_transfercapability_set(tc, ast_channel_transfercapability(chan));
2498
2499                 /* If we have an outbound group, set this peer channel to it */
2500                 if (outbound_group)
2501                         ast_app_group_set_channel(tc, outbound_group);
2502                 /* If the calling channel has the ANSWERED_ELSEWHERE flag set, inherit it. This is to support local channels */
2503                 if (ast_channel_hangupcause(chan) == AST_CAUSE_ANSWERED_ELSEWHERE)
2504                         ast_channel_hangupcause_set(tc, AST_CAUSE_ANSWERED_ELSEWHERE);
2505
2506                 /* Check if we're forced by configuration */
2507                 if (ast_test_flag64(&opts, OPT_CANCEL_ELSEWHERE))
2508                          ast_channel_hangupcause_set(tc, AST_CAUSE_ANSWERED_ELSEWHERE);
2509
2510
2511                 /* Inherit context and extension */
2512                 ast_channel_dialcontext_set(tc, ast_strlen_zero(ast_channel_macrocontext(chan)) ? ast_channel_context(chan) : ast_channel_macrocontext(chan));
2513                 if (!ast_strlen_zero(ast_channel_macroexten(chan)))
2514                         ast_channel_exten_set(tc, ast_channel_macroexten(chan));
2515                 else
2516                         ast_channel_exten_set(tc, ast_channel_exten(chan));
2517
2518                 ast_channel_stage_snapshot_done(tc);
2519
2520                 ast_channel_unlock(tc);
2521                 ast_channel_unlock(chan);
2522
2523                 /* Put channel in the list of outgoing thingies. */
2524                 tmp->chan = tc;
2525                 AST_LIST_INSERT_TAIL(&out_chans, tmp, node);
2526         }
2527
2528         /*
2529          * PREDIAL: Run gosub on all of the callee channels
2530          *
2531          * We run the callee predial before ast_call() in case the user
2532          * wishes to do something on the newly created channels before
2533          * the channel does anything important.
2534          *
2535          * Inside the target gosub we will be able to do something with
2536          * the newly created channel name ie: now the calling channel
2537          * can know what channel will be used to call the destination
2538          * ex: now we will know that SIP/abc-123 is calling SIP/def-124
2539          */
2540         if (ast_test_flag64(&opts, OPT_PREDIAL_CALLEE)
2541                 && !ast_strlen_zero(opt_args[OPT_ARG_PREDIAL_CALLEE])
2542                 && !AST_LIST_EMPTY(&out_chans)) {
2543                 const char *predial_callee;
2544
2545                 ast_replace_subargument_delimiter(opt_args[OPT_ARG_PREDIAL_CALLEE]);
2546                 predial_callee = ast_app_expand_sub_args(chan, opt_args[OPT_ARG_PREDIAL_CALLEE]);
2547                 if (predial_callee) {
2548                         ast_autoservice_start(chan);
2549                         AST_LIST_TRAVERSE(&out_chans, tmp, node) {
2550                                 ast_pre_call(tmp->chan, predial_callee);