codec_dahdi: Cannot use struct ast_translator.core_{src,src}_codec.
[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_FILE_VERSION(__FILE__, "$Revision$")
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/global_datastores.h"
62 #include "asterisk/dsp.h"
63 #include "asterisk/aoc.h"
64 #include "asterisk/ccss.h"
65 #include "asterisk/indications.h"
66 #include "asterisk/framehook.h"
67 #include "asterisk/dial.h"
68 #include "asterisk/stasis_channels.h"
69 #include "asterisk/bridge_after.h"
70 #include "asterisk/features_config.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                 /* Setup parameters */
876                 c = o->chan = ast_request(tech, ast_channel_nativeformats(in), NULL, in, stuff, &cause);
877                 if (c) {
878                         if (single && !caller_entertained) {
879                                 ast_channel_make_compatible(in, o->chan);
880                         }
881                         ast_channel_lock_both(in, o->chan);
882                         ast_channel_inherit_variables(in, o->chan);
883                         ast_channel_datastore_inherit(in, o->chan);
884                         ast_channel_unlock(in);
885                         ast_channel_unlock(o->chan);
886                         /* When a call is forwarded, we don't want to track new interfaces
887                          * dialed for CC purposes. Setting the done flag will ensure that
888                          * any Dial operations that happen later won't record CC interfaces.
889                          */
890                         ast_ignore_cc(o->chan);
891                         ast_log(LOG_NOTICE, "Not accepting call completion offers from call-forward recipient %s\n", ast_channel_name(o->chan));
892                 } else
893                         ast_log(LOG_NOTICE,
894                                 "Forwarding failed to create channel to dial '%s/%s' (cause = %d)\n",
895                                 tech, stuff, cause);
896         }
897         if (!c) {
898                 ast_channel_publish_dial(in, original, stuff, "BUSY");
899                 ast_clear_flag64(o, DIAL_STILLGOING);
900                 handle_cause(cause, num);
901                 ast_hangup(original);
902         } else {
903                 ast_channel_lock_both(c, original);
904                 ast_party_redirecting_copy(ast_channel_redirecting(c),
905                         ast_channel_redirecting(original));
906                 ast_channel_unlock(c);
907                 ast_channel_unlock(original);
908
909                 ast_channel_lock_both(c, in);
910
911                 if (single && !caller_entertained && CAN_EARLY_BRIDGE(peerflags, c, in)) {
912                         ast_rtp_instance_early_bridge_make_compatible(c, in);
913                 }
914
915                 if (!ast_channel_redirecting(c)->from.number.valid
916                         || ast_strlen_zero(ast_channel_redirecting(c)->from.number.str)) {
917                         /*
918                          * The call was not previously redirected so it is
919                          * now redirected from this number.
920                          */
921                         ast_party_number_free(&ast_channel_redirecting(c)->from.number);
922                         ast_party_number_init(&ast_channel_redirecting(c)->from.number);
923                         ast_channel_redirecting(c)->from.number.valid = 1;
924                         ast_channel_redirecting(c)->from.number.str =
925                                 ast_strdup(S_OR(ast_channel_macroexten(in), ast_channel_exten(in)));
926                 }
927
928                 ast_channel_dialed(c)->transit_network_select = ast_channel_dialed(in)->transit_network_select;
929
930                 /* Determine CallerID to store in outgoing channel. */
931                 ast_party_caller_set_init(&caller, ast_channel_caller(c));
932                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
933                         caller.id = *stored_clid;
934                         ast_channel_set_caller_event(c, &caller, NULL);
935                         ast_set_flag64(o, DIAL_CALLERID_ABSENT);
936                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(c)->id.number.valid,
937                         ast_channel_caller(c)->id.number.str, NULL))) {
938                         /*
939                          * The new channel has no preset CallerID number by the channel
940                          * driver.  Use the dialplan extension and hint name.
941                          */
942                         caller.id = *stored_clid;
943                         ast_channel_set_caller_event(c, &caller, NULL);
944                         ast_set_flag64(o, DIAL_CALLERID_ABSENT);
945                 } else {
946                         ast_clear_flag64(o, DIAL_CALLERID_ABSENT);
947                 }
948
949                 /* Determine CallerID for outgoing channel to send. */
950                 if (ast_test_flag64(o, OPT_FORCECLID)) {
951                         struct ast_party_connected_line connected;
952
953                         ast_party_connected_line_init(&connected);
954                         connected.id = *forced_clid;
955                         ast_party_connected_line_copy(ast_channel_connected(c), &connected);
956                 } else {
957                         ast_connected_line_copy_from_caller(ast_channel_connected(c), ast_channel_caller(in));
958                 }
959
960                 ast_channel_req_accountcodes(c, in, AST_CHANNEL_REQUESTOR_BRIDGE_PEER);
961
962                 ast_channel_appl_set(c, "AppDial");
963                 ast_channel_data_set(c, "(Outgoing Line)");
964                 ast_channel_publish_snapshot(c);
965
966                 ast_channel_unlock(in);
967                 if (single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
968                         struct ast_party_redirecting redirecting;
969
970                         /*
971                          * Redirecting updates to the caller make sense only on single
972                          * calls.
973                          *
974                          * We must unlock c before calling
975                          * ast_channel_redirecting_macro, because we put c into
976                          * autoservice there.  That is pretty much a guaranteed
977                          * deadlock.  This is why the handling of c's lock may seem a
978                          * bit unusual here.
979                          */
980                         ast_party_redirecting_init(&redirecting);
981                         ast_party_redirecting_copy(&redirecting, ast_channel_redirecting(c));
982                         ast_channel_unlock(c);
983                         if (ast_channel_redirecting_sub(c, in, &redirecting, 0) &&
984                                 ast_channel_redirecting_macro(c, in, &redirecting, 1, 0)) {
985                                 ast_channel_update_redirecting(in, &redirecting, NULL);
986                         }
987                         ast_party_redirecting_free(&redirecting);
988                 } else {
989                         ast_channel_unlock(c);
990                 }
991
992                 if (ast_test_flag64(peerflags, OPT_CANCEL_TIMEOUT)) {
993                         *to = -1;
994                 }
995
996                 if (ast_call(c, stuff, 0)) {
997                         ast_log(LOG_NOTICE, "Forwarding failed to dial '%s/%s'\n",
998                                 tech, stuff);
999                         ast_channel_publish_dial(in, original, stuff, "CONGESTION");
1000                         ast_clear_flag64(o, DIAL_STILLGOING);
1001                         ast_hangup(original);
1002                         ast_hangup(c);
1003                         c = o->chan = NULL;
1004                         num->nochan++;
1005                 } else {
1006                         ast_channel_publish_dial_forward(in, original, c, NULL, "CANCEL",
1007                                 ast_channel_call_forward(original));
1008
1009                         ast_channel_publish_dial(in, c, stuff, NULL);
1010
1011                         /* Hangup the original channel now, in case we needed it */
1012                         ast_hangup(original);
1013                 }
1014                 if (single && !caller_entertained) {
1015                         ast_indicate(in, -1);
1016                 }
1017         }
1018 }
1019
1020 /* argument used for some functions. */
1021 struct privacy_args {
1022         int sentringing;
1023         int privdb_val;
1024         char privcid[256];
1025         char privintro[1024];
1026         char status[256];
1027 };
1028
1029 static void publish_dial_end_event(struct ast_channel *in, struct dial_head *out_chans, struct ast_channel *exception, const char *status)
1030 {
1031         struct chanlist *outgoing;
1032         AST_LIST_TRAVERSE(out_chans, outgoing, node) {
1033                 if (!outgoing->chan || outgoing->chan == exception) {
1034                         continue;
1035                 }
1036                 ast_channel_publish_dial(in, outgoing->chan, NULL, status);
1037         }
1038 }
1039
1040 static struct ast_channel *wait_for_answer(struct ast_channel *in,
1041         struct dial_head *out_chans, int *to, struct ast_flags64 *peerflags,
1042         char *opt_args[],
1043         struct privacy_args *pa,
1044         const struct cause_args *num_in, int *result, char *dtmf_progress,
1045         const int ignore_cc,
1046         struct ast_party_id *forced_clid, struct ast_party_id *stored_clid)
1047 {
1048         struct cause_args num = *num_in;
1049         int prestart = num.busy + num.congestion + num.nochan;
1050         int orig = *to;
1051         struct ast_channel *peer = NULL;
1052 #ifdef HAVE_EPOLL
1053         struct chanlist *epollo;
1054 #endif
1055         struct chanlist *outgoing = AST_LIST_FIRST(out_chans);
1056         /* single is set if only one destination is enabled */
1057         int single = outgoing && !AST_LIST_NEXT(outgoing, node);
1058         int caller_entertained = outgoing
1059                 && ast_test_flag64(outgoing, OPT_MUSICBACK | OPT_RINGBACK);
1060         struct ast_party_connected_line connected_caller;
1061         struct ast_str *featurecode = ast_str_alloca(AST_FEATURE_MAX_LEN + 1);
1062         int cc_recall_core_id;
1063         int is_cc_recall;
1064         int cc_frame_received = 0;
1065         int num_ringing = 0;
1066         struct timeval start = ast_tvnow();
1067
1068         ast_party_connected_line_init(&connected_caller);
1069         if (single) {
1070                 /* Turn off hold music, etc */
1071                 if (!caller_entertained) {
1072                         ast_deactivate_generator(in);
1073                         /* If we are calling a single channel, and not providing ringback or music, */
1074                         /* then, make them compatible for in-band tone purpose */
1075                         if (ast_channel_make_compatible(in, outgoing->chan) < 0) {
1076                                 /* If these channels can not be made compatible,
1077                                  * there is no point in continuing.  The bridge
1078                                  * will just fail if it gets that far.
1079                                  */
1080                                 *to = -1;
1081                                 strcpy(pa->status, "CONGESTION");
1082                                 ast_channel_publish_dial(in, outgoing->chan, NULL, pa->status);
1083                                 return NULL;
1084                         }
1085                 }
1086
1087                 if (!ast_test_flag64(outgoing, OPT_IGNORE_CONNECTEDLINE)
1088                         && !ast_test_flag64(outgoing, DIAL_CALLERID_ABSENT)) {
1089                         ast_channel_lock(outgoing->chan);
1090                         ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(outgoing->chan));
1091                         ast_channel_unlock(outgoing->chan);
1092                         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1093                         if (ast_channel_connected_line_sub(outgoing->chan, in, &connected_caller, 0) &&
1094                                 ast_channel_connected_line_macro(outgoing->chan, in, &connected_caller, 1, 0)) {
1095                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
1096                         }
1097                         ast_party_connected_line_free(&connected_caller);
1098                 }
1099         }
1100
1101         is_cc_recall = ast_cc_is_recall(in, &cc_recall_core_id, NULL);
1102
1103 #ifdef HAVE_EPOLL
1104         AST_LIST_TRAVERSE(out_chans, epollo, node) {
1105                 ast_poll_channel_add(in, epollo->chan);
1106         }
1107 #endif
1108
1109         while ((*to = ast_remaining_ms(start, orig)) && !peer) {
1110                 struct chanlist *o;
1111                 int pos = 0; /* how many channels do we handle */
1112                 int numlines = prestart;
1113                 struct ast_channel *winner;
1114                 struct ast_channel *watchers[AST_MAX_WATCHERS];
1115
1116                 watchers[pos++] = in;
1117                 AST_LIST_TRAVERSE(out_chans, o, node) {
1118                         /* Keep track of important channels */
1119                         if (ast_test_flag64(o, DIAL_STILLGOING) && o->chan)
1120                                 watchers[pos++] = o->chan;
1121                         numlines++;
1122                 }
1123                 if (pos == 1) { /* only the input channel is available */
1124                         if (numlines == (num.busy + num.congestion + num.nochan)) {
1125                                 ast_verb(2, "Everyone is busy/congested at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1126                                 if (num.busy)
1127                                         strcpy(pa->status, "BUSY");
1128                                 else if (num.congestion)
1129                                         strcpy(pa->status, "CONGESTION");
1130                                 else if (num.nochan)
1131                                         strcpy(pa->status, "CHANUNAVAIL");
1132                         } else {
1133                                 ast_verb(3, "No one is available to answer at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1134                         }
1135                         *to = 0;
1136                         if (is_cc_recall) {
1137                                 ast_cc_failed(cc_recall_core_id, "Everyone is busy/congested for the recall. How sad");
1138                         }
1139                         return NULL;
1140                 }
1141                 winner = ast_waitfor_n(watchers, pos, to);
1142                 AST_LIST_TRAVERSE(out_chans, o, node) {
1143                         struct ast_frame *f;
1144                         struct ast_channel *c = o->chan;
1145
1146                         if (c == NULL)
1147                                 continue;
1148                         if (ast_test_flag64(o, DIAL_STILLGOING) && ast_channel_state(c) == AST_STATE_UP) {
1149                                 if (!peer) {
1150                                         ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1151                                         if (!single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1152                                                 if (o->pending_connected_update) {
1153                                                         if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1154                                                                 ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1155                                                                 ast_channel_update_connected_line(in, &o->connected, NULL);
1156                                                         }
1157                                                 } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1158                                                         ast_channel_lock(c);
1159                                                         ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(c));
1160                                                         ast_channel_unlock(c);
1161                                                         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1162                                                         if (ast_channel_connected_line_sub(c, in, &connected_caller, 0) &&
1163                                                                 ast_channel_connected_line_macro(c, in, &connected_caller, 1, 0)) {
1164                                                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
1165                                                         }
1166                                                         ast_party_connected_line_free(&connected_caller);
1167                                                 }
1168                                         }
1169                                         if (o->aoc_s_rate_list) {
1170                                                 size_t encoded_size;
1171                                                 struct ast_aoc_encoded *encoded;
1172                                                 if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1173                                                         ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1174                                                         ast_aoc_destroy_encoded(encoded);
1175                                                 }
1176                                         }
1177                                         peer = c;
1178                                         ast_copy_flags64(peerflags, o,
1179                                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1180                                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1181                                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1182                                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
1183                                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1184                                                 DIAL_NOFORWARDHTML);
1185                                         ast_channel_dialcontext_set(c, "");
1186                                         ast_channel_exten_set(c, "");
1187                                 }
1188                                 continue;
1189                         }
1190                         if (c != winner)
1191                                 continue;
1192                         /* here, o->chan == c == winner */
1193                         if (!ast_strlen_zero(ast_channel_call_forward(c))) {
1194                                 pa->sentringing = 0;
1195                                 if (!ignore_cc && (f = ast_read(c))) {
1196                                         if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_CC) {
1197                                                 /* This channel is forwarding the call, and is capable of CC, so
1198                                                  * be sure to add the new device interface to the list
1199                                                  */
1200                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1201                                         }
1202                                         ast_frfree(f);
1203                                 }
1204
1205                                 if (o->pending_connected_update) {
1206                                         /*
1207                                          * Re-seed the chanlist's connected line information with
1208                                          * previously acquired connected line info from the incoming
1209                                          * channel.  The previously acquired connected line info could
1210                                          * have been set through the CONNECTED_LINE dialplan function.
1211                                          */
1212                                         o->pending_connected_update = 0;
1213                                         ast_channel_lock(in);
1214                                         ast_party_connected_line_copy(&o->connected, ast_channel_connected(in));
1215                                         ast_channel_unlock(in);
1216                                 }
1217
1218                                 do_forward(o, &num, peerflags, single, caller_entertained, &orig,
1219                                         forced_clid, stored_clid);
1220
1221                                 if (single && o->chan
1222                                         && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)
1223                                         && !ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1224                                         ast_channel_lock(o->chan);
1225                                         ast_connected_line_copy_from_caller(&connected_caller,
1226                                                 ast_channel_caller(o->chan));
1227                                         ast_channel_unlock(o->chan);
1228                                         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1229                                         if (ast_channel_connected_line_sub(o->chan, in, &connected_caller, 0) &&
1230                                                 ast_channel_connected_line_macro(o->chan, in, &connected_caller, 1, 0)) {
1231                                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
1232                                         }
1233                                         ast_party_connected_line_free(&connected_caller);
1234                                 }
1235                                 continue;
1236                         }
1237                         f = ast_read(winner);
1238                         if (!f) {
1239                                 ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1240 #ifdef HAVE_EPOLL
1241                                 ast_poll_channel_del(in, c);
1242 #endif
1243                                 ast_channel_publish_dial(in, c, NULL, ast_hangup_cause_to_dial_status(ast_channel_hangupcause(c)));
1244                                 ast_hangup(c);
1245                                 c = o->chan = NULL;
1246                                 ast_clear_flag64(o, DIAL_STILLGOING);
1247                                 handle_cause(ast_channel_hangupcause(in), &num);
1248                                 continue;
1249                         }
1250                         switch (f->frametype) {
1251                         case AST_FRAME_CONTROL:
1252                                 switch (f->subclass.integer) {
1253                                 case AST_CONTROL_ANSWER:
1254                                         /* This is our guy if someone answered. */
1255                                         if (!peer) {
1256                                                 ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1257                                                 if (!single && !ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1258                                                         if (o->pending_connected_update) {
1259                                                                 if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1260                                                                         ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1261                                                                         ast_channel_update_connected_line(in, &o->connected, NULL);
1262                                                                 }
1263                                                         } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1264                                                                 ast_channel_lock(c);
1265                                                                 ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(c));
1266                                                                 ast_channel_unlock(c);
1267                                                                 connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1268                                                                 if (ast_channel_connected_line_sub(c, in, &connected_caller, 0) &&
1269                                                                         ast_channel_connected_line_macro(c, in, &connected_caller, 1, 0)) {
1270                                                                         ast_channel_update_connected_line(in, &connected_caller, NULL);
1271                                                                 }
1272                                                                 ast_party_connected_line_free(&connected_caller);
1273                                                         }
1274                                                 }
1275                                                 if (o->aoc_s_rate_list) {
1276                                                         size_t encoded_size;
1277                                                         struct ast_aoc_encoded *encoded;
1278                                                         if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1279                                                                 ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1280                                                                 ast_aoc_destroy_encoded(encoded);
1281                                                         }
1282                                                 }
1283                                                 peer = c;
1284                                                 /* Inform everyone else that they've been canceled.
1285                                                  * The dial end event for the peer will be sent out after
1286                                                  * other Dial options have been handled.
1287                                                  */
1288                                                 publish_dial_end_event(in, out_chans, peer, "CANCEL");
1289                                                 ast_copy_flags64(peerflags, o,
1290                                                         OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1291                                                         OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1292                                                         OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1293                                                         OPT_CALLEE_PARK | OPT_CALLER_PARK |
1294                                                         OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1295                                                         DIAL_NOFORWARDHTML);
1296                                                 ast_channel_dialcontext_set(c, "");
1297                                                 ast_channel_exten_set(c, "");
1298                                                 if (CAN_EARLY_BRIDGE(peerflags, in, peer)) {
1299                                                         /* Setup early bridge if appropriate */
1300                                                         ast_channel_early_bridge(in, peer);
1301                                                 }
1302                                         }
1303                                         /* If call has been answered, then the eventual hangup is likely to be normal hangup */
1304                                         ast_channel_hangupcause_set(in, AST_CAUSE_NORMAL_CLEARING);
1305                                         ast_channel_hangupcause_set(c, AST_CAUSE_NORMAL_CLEARING);
1306                                         break;
1307                                 case AST_CONTROL_BUSY:
1308                                         ast_verb(3, "%s is busy\n", ast_channel_name(c));
1309                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1310                                         ast_channel_publish_dial(in, c, NULL, "BUSY");
1311                                         ast_hangup(c);
1312                                         c = o->chan = NULL;
1313                                         ast_clear_flag64(o, DIAL_STILLGOING);
1314                                         handle_cause(AST_CAUSE_BUSY, &num);
1315                                         break;
1316                                 case AST_CONTROL_CONGESTION:
1317                                         ast_verb(3, "%s is circuit-busy\n", ast_channel_name(c));
1318                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1319                                         ast_channel_publish_dial(in, c, NULL, "CONGESTION");
1320                                         ast_hangup(c);
1321                                         c = o->chan = NULL;
1322                                         ast_clear_flag64(o, DIAL_STILLGOING);
1323                                         handle_cause(AST_CAUSE_CONGESTION, &num);
1324                                         break;
1325                                 case AST_CONTROL_RINGING:
1326                                         /* This is a tricky area to get right when using a native
1327                                          * CC agent. The reason is that we do the best we can to send only a
1328                                          * single ringing notification to the caller.
1329                                          *
1330                                          * Call completion complicates the logic used here. CCNR is typically
1331                                          * offered during a ringing message. Let's say that party A calls
1332                                          * parties B, C, and D. B and C do not support CC requests, but D
1333                                          * does. If we were to receive a ringing notification from B before
1334                                          * the others, then we would end up sending a ringing message to
1335                                          * A with no CCNR offer present.
1336                                          *
1337                                          * The approach that we have taken is that if we receive a ringing
1338                                          * response from a party and no CCNR offer is present, we need to
1339                                          * wait. Specifically, we need to wait until either a) a called party
1340                                          * offers CCNR in its ringing response or b) all called parties have
1341                                          * responded in some way to our call and none offers CCNR.
1342                                          *
1343                                          * The drawback to this is that if one of the parties has a delayed
1344                                          * response or, god forbid, one just plain doesn't respond to our
1345                                          * outgoing call, then this will result in a significant delay between
1346                                          * when the caller places the call and hears ringback.
1347                                          *
1348                                          * Note also that if CC is disabled for this call, then it is perfectly
1349                                          * fine for ringing frames to get sent through.
1350                                          */
1351                                         ++num_ringing;
1352                                         if (ignore_cc || cc_frame_received || num_ringing == numlines) {
1353                                                 ast_verb(3, "%s is ringing\n", ast_channel_name(c));
1354                                                 /* Setup early media if appropriate */
1355                                                 if (single && !caller_entertained
1356                                                         && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1357                                                         ast_channel_early_bridge(in, c);
1358                                                 }
1359                                                 if (!(pa->sentringing) && !ast_test_flag64(outgoing, OPT_MUSICBACK) && ast_strlen_zero(opt_args[OPT_ARG_RINGBACK])) {
1360                                                         ast_indicate(in, AST_CONTROL_RINGING);
1361                                                         pa->sentringing++;
1362                                                 }
1363                                         }
1364                                         break;
1365                                 case AST_CONTROL_PROGRESS:
1366                                         ast_verb(3, "%s is making progress passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1367                                         /* Setup early media if appropriate */
1368                                         if (single && !caller_entertained
1369                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1370                                                 ast_channel_early_bridge(in, c);
1371                                         }
1372                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK)) {
1373                                                 if (single || (!single && !pa->sentringing)) {
1374                                                         ast_indicate(in, AST_CONTROL_PROGRESS);
1375                                                 }
1376                                         }
1377                                         if (!ast_strlen_zero(dtmf_progress)) {
1378                                                 ast_verb(3,
1379                                                         "Sending DTMF '%s' to the called party as result of receiving a PROGRESS message.\n",
1380                                                         dtmf_progress);
1381                                                 ast_dtmf_stream(c, in, dtmf_progress, 250, 0);
1382                                         }
1383                                         break;
1384                                 case AST_CONTROL_VIDUPDATE:
1385                                 case AST_CONTROL_SRCUPDATE:
1386                                 case AST_CONTROL_SRCCHANGE:
1387                                         if (!single || caller_entertained) {
1388                                                 break;
1389                                         }
1390                                         ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1391                                                 ast_channel_name(c), f->subclass.integer, ast_channel_name(in));
1392                                         ast_indicate(in, f->subclass.integer);
1393                                         break;
1394                                 case AST_CONTROL_CONNECTED_LINE:
1395                                         if (ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1396                                                 ast_verb(3, "Connected line update to %s prevented.\n", ast_channel_name(in));
1397                                                 break;
1398                                         }
1399                                         if (!single) {
1400                                                 struct ast_party_connected_line connected;
1401
1402                                                 ast_verb(3, "%s connected line has changed. Saving it until answer for %s\n",
1403                                                         ast_channel_name(c), ast_channel_name(in));
1404                                                 ast_party_connected_line_set_init(&connected, &o->connected);
1405                                                 ast_connected_line_parse_data(f->data.ptr, f->datalen, &connected);
1406                                                 ast_party_connected_line_set(&o->connected, &connected, NULL);
1407                                                 ast_party_connected_line_free(&connected);
1408                                                 o->pending_connected_update = 1;
1409                                                 break;
1410                                         }
1411                                         if (ast_channel_connected_line_sub(c, in, f, 1) &&
1412                                                 ast_channel_connected_line_macro(c, in, f, 1, 1)) {
1413                                                 ast_indicate_data(in, AST_CONTROL_CONNECTED_LINE, f->data.ptr, f->datalen);
1414                                         }
1415                                         break;
1416                                 case AST_CONTROL_AOC:
1417                                         {
1418                                                 struct ast_aoc_decoded *decoded = ast_aoc_decode(f->data.ptr, f->datalen, o->chan);
1419                                                 if (decoded && (ast_aoc_get_msg_type(decoded) == AST_AOC_S)) {
1420                                                         ast_aoc_destroy_decoded(o->aoc_s_rate_list);
1421                                                         o->aoc_s_rate_list = decoded;
1422                                                 } else {
1423                                                         ast_aoc_destroy_decoded(decoded);
1424                                                 }
1425                                         }
1426                                         break;
1427                                 case AST_CONTROL_REDIRECTING:
1428                                         if (!single) {
1429                                                 /*
1430                                                  * Redirecting updates to the caller make sense only on single
1431                                                  * calls.
1432                                                  */
1433                                                 break;
1434                                         }
1435                                         if (ast_test_flag64(o, OPT_IGNORE_CONNECTEDLINE)) {
1436                                                 ast_verb(3, "Redirecting update to %s prevented.\n", ast_channel_name(in));
1437                                                 break;
1438                                         }
1439                                         ast_verb(3, "%s redirecting info has changed, passing it to %s\n",
1440                                                 ast_channel_name(c), ast_channel_name(in));
1441                                         if (ast_channel_redirecting_sub(c, in, f, 1) &&
1442                                                 ast_channel_redirecting_macro(c, in, f, 1, 1)) {
1443                                                 ast_indicate_data(in, AST_CONTROL_REDIRECTING, f->data.ptr, f->datalen);
1444                                         }
1445                                         pa->sentringing = 0;
1446                                         break;
1447                                 case AST_CONTROL_PROCEEDING:
1448                                         ast_verb(3, "%s is proceeding passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1449                                         if (single && !caller_entertained
1450                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1451                                                 ast_channel_early_bridge(in, c);
1452                                         }
1453                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK))
1454                                                 ast_indicate(in, AST_CONTROL_PROCEEDING);
1455                                         break;
1456                                 case AST_CONTROL_HOLD:
1457                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1458                                         ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(c));
1459                                         ast_indicate_data(in, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1460                                         break;
1461                                 case AST_CONTROL_UNHOLD:
1462                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1463                                         ast_verb(3, "Call on %s left from hold\n", ast_channel_name(c));
1464                                         ast_indicate(in, AST_CONTROL_UNHOLD);
1465                                         break;
1466                                 case AST_CONTROL_OFFHOOK:
1467                                 case AST_CONTROL_FLASH:
1468                                         /* Ignore going off hook and flash */
1469                                         break;
1470                                 case AST_CONTROL_CC:
1471                                         if (!ignore_cc) {
1472                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1473                                                 cc_frame_received = 1;
1474                                         }
1475                                         break;
1476                                 case AST_CONTROL_PVT_CAUSE_CODE:
1477                                         ast_indicate_data(in, AST_CONTROL_PVT_CAUSE_CODE, f->data.ptr, f->datalen);
1478                                         break;
1479                                 case -1:
1480                                         if (single && !caller_entertained) {
1481                                                 ast_verb(3, "%s stopped sounds\n", ast_channel_name(c));
1482                                                 ast_indicate(in, -1);
1483                                                 pa->sentringing = 0;
1484                                         }
1485                                         break;
1486                                 default:
1487                                         ast_debug(1, "Dunno what to do with control type %d\n", f->subclass.integer);
1488                                         break;
1489                                 }
1490                                 break;
1491                         case AST_FRAME_VOICE:
1492                         case AST_FRAME_IMAGE:
1493                                 if (caller_entertained) {
1494                                         break;
1495                                 }
1496                                 /* Fall through */
1497                         case AST_FRAME_TEXT:
1498                                 if (single && ast_write(in, f)) {
1499                                         ast_log(LOG_WARNING, "Unable to write frametype: %u\n",
1500                                                 f->frametype);
1501                                 }
1502                                 break;
1503                         case AST_FRAME_HTML:
1504                                 if (single && !ast_test_flag64(outgoing, DIAL_NOFORWARDHTML)
1505                                         && ast_channel_sendhtml(in, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1506                                         ast_log(LOG_WARNING, "Unable to send URL\n");
1507                                 }
1508                                 break;
1509                         default:
1510                                 break;
1511                         }
1512                         ast_frfree(f);
1513                 } /* end for */
1514                 if (winner == in) {
1515                         struct ast_frame *f = ast_read(in);
1516 #if 0
1517                         if (f && (f->frametype != AST_FRAME_VOICE))
1518                                 printf("Frame type: %d, %d\n", f->frametype, f->subclass);
1519                         else if (!f || (f->frametype != AST_FRAME_VOICE))
1520                                 printf("Hangup received on %s\n", in->name);
1521 #endif
1522                         if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP))) {
1523                                 /* Got hung up */
1524                                 *to = -1;
1525                                 strcpy(pa->status, "CANCEL");
1526                                 publish_dial_end_event(in, out_chans, NULL, pa->status);
1527                                 if (f) {
1528                                         if (f->data.uint32) {
1529                                                 ast_channel_hangupcause_set(in, f->data.uint32);
1530                                         }
1531                                         ast_frfree(f);
1532                                 }
1533                                 if (is_cc_recall) {
1534                                         ast_cc_completed(in, "CC completed, although the caller hung up (cancelled)");
1535                                 }
1536                                 return NULL;
1537                         }
1538
1539                         /* now f is guaranteed non-NULL */
1540                         if (f->frametype == AST_FRAME_DTMF) {
1541                                 if (ast_test_flag64(peerflags, OPT_DTMF_EXIT)) {
1542                                         const char *context;
1543                                         ast_channel_lock(in);
1544                                         context = pbx_builtin_getvar_helper(in, "EXITCONTEXT");
1545                                         if (onedigit_goto(in, context, (char) f->subclass.integer, 1)) {
1546                                                 ast_verb(3, "User hit %c to disconnect call.\n", f->subclass.integer);
1547                                                 *to = 0;
1548                                                 *result = f->subclass.integer;
1549                                                 strcpy(pa->status, "CANCEL");
1550                                                 publish_dial_end_event(in, out_chans, NULL, pa->status);
1551                                                 ast_frfree(f);
1552                                                 ast_channel_unlock(in);
1553                                                 if (is_cc_recall) {
1554                                                         ast_cc_completed(in, "CC completed, but the caller used DTMF to exit");
1555                                                 }
1556                                                 return NULL;
1557                                         }
1558                                         ast_channel_unlock(in);
1559                                 }
1560
1561                                 if (ast_test_flag64(peerflags, OPT_CALLER_HANGUP) &&
1562                                         detect_disconnect(in, f->subclass.integer, &featurecode)) {
1563                                         ast_verb(3, "User requested call disconnect.\n");
1564                                         *to = 0;
1565                                         strcpy(pa->status, "CANCEL");
1566                                         publish_dial_end_event(in, out_chans, NULL, pa->status);
1567                                         ast_frfree(f);
1568                                         if (is_cc_recall) {
1569                                                 ast_cc_completed(in, "CC completed, but the caller hung up with DTMF");
1570                                         }
1571                                         return NULL;
1572                                 }
1573                         }
1574
1575                         /* Send the frame from the in channel to all outgoing channels. */
1576                         AST_LIST_TRAVERSE(out_chans, o, node) {
1577                                 if (!o->chan || !ast_test_flag64(o, DIAL_STILLGOING)) {
1578                                         /* This outgoing channel has died so don't send the frame to it. */
1579                                         continue;
1580                                 }
1581                                 switch (f->frametype) {
1582                                 case AST_FRAME_HTML:
1583                                         /* Forward HTML stuff */
1584                                         if (!ast_test_flag64(o, DIAL_NOFORWARDHTML)
1585                                                 && ast_channel_sendhtml(o->chan, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1586                                                 ast_log(LOG_WARNING, "Unable to send URL\n");
1587                                         }
1588                                         break;
1589                                 case AST_FRAME_VOICE:
1590                                 case AST_FRAME_IMAGE:
1591                                         if (!single || caller_entertained) {
1592                                                 /*
1593                                                  * We are calling multiple parties or caller is being
1594                                                  * entertained and has thus not been made compatible.
1595                                                  * No need to check any other called parties.
1596                                                  */
1597                                                 goto skip_frame;
1598                                         }
1599                                         /* Fall through */
1600                                 case AST_FRAME_TEXT:
1601                                 case AST_FRAME_DTMF_BEGIN:
1602                                 case AST_FRAME_DTMF_END:
1603                                         if (ast_write(o->chan, f)) {
1604                                                 ast_log(LOG_WARNING, "Unable to forward frametype: %u\n",
1605                                                         f->frametype);
1606                                         }
1607                                         break;
1608                                 case AST_FRAME_CONTROL:
1609                                         switch (f->subclass.integer) {
1610                                         case AST_CONTROL_HOLD:
1611                                                 ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(o->chan));
1612                                                 ast_indicate_data(o->chan, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1613                                                 break;
1614                                         case AST_CONTROL_UNHOLD:
1615                                                 ast_verb(3, "Call on %s left from hold\n", ast_channel_name(o->chan));
1616                                                 ast_indicate(o->chan, AST_CONTROL_UNHOLD);
1617                                                 break;
1618                                         case AST_CONTROL_VIDUPDATE:
1619                                         case AST_CONTROL_SRCUPDATE:
1620                                         case AST_CONTROL_SRCCHANGE:
1621                                                 if (!single || caller_entertained) {
1622                                                         /*
1623                                                          * We are calling multiple parties or caller is being
1624                                                          * entertained and has thus not been made compatible.
1625                                                          * No need to check any other called parties.
1626                                                          */
1627                                                         goto skip_frame;
1628                                                 }
1629                                                 ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1630                                                         ast_channel_name(in), f->subclass.integer, ast_channel_name(o->chan));
1631                                                 ast_indicate(o->chan, f->subclass.integer);
1632                                                 break;
1633                                         case AST_CONTROL_CONNECTED_LINE:
1634                                                 if (ast_channel_connected_line_sub(in, o->chan, f, 1) &&
1635                                                         ast_channel_connected_line_macro(in, o->chan, f, 0, 1)) {
1636                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1637                                                 }
1638                                                 break;
1639                                         case AST_CONTROL_REDIRECTING:
1640                                                 if (ast_channel_redirecting_sub(in, o->chan, f, 1) &&
1641                                                         ast_channel_redirecting_macro(in, o->chan, f, 0, 1)) {
1642                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1643                                                 }
1644                                                 break;
1645                                         default:
1646                                                 /* We are not going to do anything with this frame. */
1647                                                 goto skip_frame;
1648                                         }
1649                                         break;
1650                                 default:
1651                                         /* We are not going to do anything with this frame. */
1652                                         goto skip_frame;
1653                                 }
1654                         }
1655 skip_frame:;
1656                         ast_frfree(f);
1657                 }
1658         }
1659
1660         if (!*to || ast_check_hangup(in)) {
1661                 ast_verb(3, "Nobody picked up in %d ms\n", orig);
1662                 publish_dial_end_event(in, out_chans, NULL, "NOANSWER");
1663         }
1664
1665 #ifdef HAVE_EPOLL
1666         AST_LIST_TRAVERSE(out_chans, epollo, node) {
1667                 if (epollo->chan)
1668                         ast_poll_channel_del(in, epollo->chan);
1669         }
1670 #endif
1671
1672         if (is_cc_recall) {
1673                 ast_cc_completed(in, "Recall completed!");
1674         }
1675         return peer;
1676 }
1677
1678 static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str **featurecode)
1679 {
1680         char disconnect_code[AST_FEATURE_MAX_LEN];
1681         int res;
1682
1683         ast_str_append(featurecode, 1, "%c", code);
1684
1685         res = ast_get_builtin_feature(chan, "disconnect", disconnect_code, sizeof(disconnect_code));
1686         if (res) {
1687                 ast_str_reset(*featurecode);
1688                 return 0;
1689         }
1690
1691         if (strlen(disconnect_code) > ast_str_strlen(*featurecode)) {
1692                 /* Could be a partial match, anyway */
1693                 if (strncmp(disconnect_code, ast_str_buffer(*featurecode), ast_str_strlen(*featurecode))) {
1694                         ast_str_reset(*featurecode);
1695                 }
1696                 return 0;
1697         }
1698
1699         if (strcmp(disconnect_code, ast_str_buffer(*featurecode))) {
1700                 ast_str_reset(*featurecode);
1701                 return 0;
1702         }
1703
1704         return 1;
1705 }
1706
1707 /* returns true if there is a valid privacy reply */
1708 static int valid_priv_reply(struct ast_flags64 *opts, int res)
1709 {
1710         if (res < '1')
1711                 return 0;
1712         if (ast_test_flag64(opts, OPT_PRIVACY) && res <= '5')
1713                 return 1;
1714         if (ast_test_flag64(opts, OPT_SCREENING) && res <= '4')
1715                 return 1;
1716         return 0;
1717 }
1718
1719 static int do_privacy(struct ast_channel *chan, struct ast_channel *peer,
1720         struct ast_flags64 *opts, char **opt_args, struct privacy_args *pa)
1721 {
1722
1723         int res2;
1724         int loopcount = 0;
1725
1726         /* Get the user's intro, store it in priv-callerintros/$CID,
1727            unless it is already there-- this should be done before the
1728            call is actually dialed  */
1729
1730         /* all ring indications and moh for the caller has been halted as soon as the
1731            target extension was picked up. We are going to have to kill some
1732            time and make the caller believe the peer hasn't picked up yet */
1733
1734         if (ast_test_flag64(opts, OPT_MUSICBACK) && !ast_strlen_zero(opt_args[OPT_ARG_MUSICBACK])) {
1735                 char *original_moh = ast_strdupa(ast_channel_musicclass(chan));
1736                 ast_indicate(chan, -1);
1737                 ast_channel_musicclass_set(chan, opt_args[OPT_ARG_MUSICBACK]);
1738                 ast_moh_start(chan, opt_args[OPT_ARG_MUSICBACK], NULL);
1739                 ast_channel_musicclass_set(chan, original_moh);
1740         } else if (ast_test_flag64(opts, OPT_RINGBACK) || ast_test_flag64(opts, OPT_RING_WITH_EARLY_MEDIA)) {
1741                 ast_indicate(chan, AST_CONTROL_RINGING);
1742                 pa->sentringing++;
1743         }
1744
1745         /* Start autoservice on the other chan ?? */
1746         res2 = ast_autoservice_start(chan);
1747         /* Now Stream the File */
1748         for (loopcount = 0; loopcount < 3; loopcount++) {
1749                 if (res2 && loopcount == 0) /* error in ast_autoservice_start() */
1750                         break;
1751                 if (!res2) /* on timeout, play the message again */
1752                         res2 = ast_play_and_wait(peer, "priv-callpending");
1753                 if (!valid_priv_reply(opts, res2))
1754                         res2 = 0;
1755                 /* priv-callpending script:
1756                    "I have a caller waiting, who introduces themselves as:"
1757                 */
1758                 if (!res2)
1759                         res2 = ast_play_and_wait(peer, pa->privintro);
1760                 if (!valid_priv_reply(opts, res2))
1761                         res2 = 0;
1762                 /* now get input from the called party, as to their choice */
1763                 if (!res2) {
1764                         /* XXX can we have both, or they are mutually exclusive ? */
1765                         if (ast_test_flag64(opts, OPT_PRIVACY))
1766                                 res2 = ast_play_and_wait(peer, "priv-callee-options");
1767                         if (ast_test_flag64(opts, OPT_SCREENING))
1768                                 res2 = ast_play_and_wait(peer, "screen-callee-options");
1769                 }
1770
1771                 /*! \page DialPrivacy Dial Privacy scripts
1772                  * \par priv-callee-options script:
1773                  * \li Dial 1 if you wish this caller to reach you directly in the future,
1774                  *      and immediately connect to their incoming call.
1775                  * \li Dial 2 if you wish to send this caller to voicemail now and forevermore.
1776                  * \li Dial 3 to send this caller to the torture menus, now and forevermore.
1777                  * \li Dial 4 to send this caller to a simple "go away" menu, now and forevermore.
1778                  * \li Dial 5 to allow this caller to come straight thru to you in the future,
1779                  *      but right now, just this once, send them to voicemail.
1780                  *
1781                  * \par screen-callee-options script:
1782                  * \li Dial 1 if you wish to immediately connect to the incoming call
1783                  * \li Dial 2 if you wish to send this caller to voicemail.
1784                  * \li Dial 3 to send this caller to the torture menus.
1785                  * \li Dial 4 to send this caller to a simple "go away" menu.
1786                  */
1787                 if (valid_priv_reply(opts, res2))
1788                         break;
1789                 /* invalid option */
1790                 res2 = ast_play_and_wait(peer, "vm-sorry");
1791         }
1792
1793         if (ast_test_flag64(opts, OPT_MUSICBACK)) {
1794                 ast_moh_stop(chan);
1795         } else if (ast_test_flag64(opts, OPT_RINGBACK) || ast_test_flag64(opts, OPT_RING_WITH_EARLY_MEDIA)) {
1796                 ast_indicate(chan, -1);
1797                 pa->sentringing = 0;
1798         }
1799         ast_autoservice_stop(chan);
1800         if (ast_test_flag64(opts, OPT_PRIVACY) && (res2 >= '1' && res2 <= '5')) {
1801                 /* map keypresses to various things, the index is res2 - '1' */
1802                 static const char * const _val[] = { "ALLOW", "DENY", "TORTURE", "KILL", "ALLOW" };
1803                 static const int _flag[] = { AST_PRIVACY_ALLOW, AST_PRIVACY_DENY, AST_PRIVACY_TORTURE, AST_PRIVACY_KILL, AST_PRIVACY_ALLOW};
1804                 int i = res2 - '1';
1805                 ast_verb(3, "--Set privacy database entry %s/%s to %s\n",
1806                         opt_args[OPT_ARG_PRIVACY], pa->privcid, _val[i]);
1807                 ast_privacy_set(opt_args[OPT_ARG_PRIVACY], pa->privcid, _flag[i]);
1808         }
1809         switch (res2) {
1810         case '1':
1811                 break;
1812         case '2':
1813                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1814                 break;
1815         case '3':
1816                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1817                 break;
1818         case '4':
1819                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1820                 break;
1821         case '5':
1822                 /* XXX should we set status to DENY ? */
1823                 if (ast_test_flag64(opts, OPT_PRIVACY))
1824                         break;
1825                 /* if not privacy, then 5 is the same as "default" case */
1826         default: /* bad input or -1 if failure to start autoservice */
1827                 /* well, if the user messes up, ... he had his chance... What Is The Best Thing To Do?  */
1828                 /* well, there seems basically two choices. Just patch the caller thru immediately,
1829                           or,... put 'em thru to voicemail. */
1830                 /* since the callee may have hung up, let's do the voicemail thing, no database decision */
1831                 ast_log(LOG_NOTICE, "privacy: no valid response from the callee. Sending the caller to voicemail, the callee isn't responding\n");
1832                 /* XXX should we set status to DENY ? */
1833                 /* XXX what about the privacy flags ? */
1834                 break;
1835         }
1836
1837         if (res2 == '1') { /* the only case where we actually connect */
1838                 /* if the intro is NOCALLERID, then there's no reason to leave it on disk, it'll
1839                    just clog things up, and it's not useful information, not being tied to a CID */
1840                 if (strncmp(pa->privcid, "NOCALLERID", 10) == 0 || ast_test_flag64(opts, OPT_SCREEN_NOINTRO)) {
1841                         ast_filedelete(pa->privintro, NULL);
1842                         if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1843                                 ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1844                         else
1845                                 ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1846                 }
1847                 return 0; /* the good exit path */
1848         } else {
1849                 /* hang up on the callee -- he didn't want to talk anyway! */
1850                 ast_autoservice_chan_hangup_peer(chan, peer);
1851                 return -1;
1852         }
1853 }
1854
1855 /*! \brief returns 1 if successful, 0 or <0 if the caller should 'goto out' */
1856 static int setup_privacy_args(struct privacy_args *pa,
1857         struct ast_flags64 *opts, char *opt_args[], struct ast_channel *chan)
1858 {
1859         char callerid[60];
1860         int res;
1861         char *l;
1862
1863         if (ast_channel_caller(chan)->id.number.valid
1864                 && !ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
1865                 l = ast_strdupa(ast_channel_caller(chan)->id.number.str);
1866                 ast_shrink_phone_number(l);
1867                 if (ast_test_flag64(opts, OPT_PRIVACY) ) {
1868                         ast_verb(3, "Privacy DB is '%s', clid is '%s'\n", opt_args[OPT_ARG_PRIVACY], l);
1869                         pa->privdb_val = ast_privacy_check(opt_args[OPT_ARG_PRIVACY], l);
1870                 } else {
1871                         ast_verb(3, "Privacy Screening, clid is '%s'\n", l);
1872                         pa->privdb_val = AST_PRIVACY_UNKNOWN;
1873                 }
1874         } else {
1875                 char *tnam, *tn2;
1876
1877                 tnam = ast_strdupa(ast_channel_name(chan));
1878                 /* clean the channel name so slashes don't try to end up in disk file name */
1879                 for (tn2 = tnam; *tn2; tn2++) {
1880                         if (*tn2 == '/')  /* any other chars to be afraid of? */
1881                                 *tn2 = '=';
1882                 }
1883                 ast_verb(3, "Privacy-- callerid is empty\n");
1884
1885                 snprintf(callerid, sizeof(callerid), "NOCALLERID_%s%s", ast_channel_exten(chan), tnam);
1886                 l = callerid;
1887                 pa->privdb_val = AST_PRIVACY_UNKNOWN;
1888         }
1889
1890         ast_copy_string(pa->privcid, l, sizeof(pa->privcid));
1891
1892         if (strncmp(pa->privcid, "NOCALLERID", 10) != 0 && ast_test_flag64(opts, OPT_SCREEN_NOCALLERID)) {
1893                 /* if callerid is set and OPT_SCREEN_NOCALLERID is set also */
1894                 ast_verb(3, "CallerID set (%s); N option set; Screening should be off\n", pa->privcid);
1895                 pa->privdb_val = AST_PRIVACY_ALLOW;
1896         } else if (ast_test_flag64(opts, OPT_SCREEN_NOCALLERID) && strncmp(pa->privcid, "NOCALLERID", 10) == 0) {
1897                 ast_verb(3, "CallerID blank; N option set; Screening should happen; dbval is %d\n", pa->privdb_val);
1898         }
1899
1900         if (pa->privdb_val == AST_PRIVACY_DENY) {
1901                 ast_verb(3, "Privacy DB reports PRIVACY_DENY for this callerid. Dial reports unavailable\n");
1902                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1903                 return 0;
1904         } else if (pa->privdb_val == AST_PRIVACY_KILL) {
1905                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1906                 return 0; /* Is this right? */
1907         } else if (pa->privdb_val == AST_PRIVACY_TORTURE) {
1908                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1909                 return 0; /* is this right??? */
1910         } else if (pa->privdb_val == AST_PRIVACY_UNKNOWN) {
1911                 /* Get the user's intro, store it in priv-callerintros/$CID,
1912                    unless it is already there-- this should be done before the
1913                    call is actually dialed  */
1914
1915                 /* make sure the priv-callerintros dir actually exists */
1916                 snprintf(pa->privintro, sizeof(pa->privintro), "%s/sounds/priv-callerintros", ast_config_AST_DATA_DIR);
1917                 if ((res = ast_mkdir(pa->privintro, 0755))) {
1918                         ast_log(LOG_WARNING, "privacy: can't create directory priv-callerintros: %s\n", strerror(res));
1919                         return -1;
1920                 }
1921
1922                 snprintf(pa->privintro, sizeof(pa->privintro), "priv-callerintros/%s", pa->privcid);
1923                 if (ast_fileexists(pa->privintro, NULL, NULL ) > 0 && strncmp(pa->privcid, "NOCALLERID", 10) != 0) {
1924                         /* the DELUX version of this code would allow this caller the
1925                            option to hear and retape their previously recorded intro.
1926                         */
1927                 } else {
1928                         int duration; /* for feedback from play_and_wait */
1929                         /* the file doesn't exist yet. Let the caller submit his
1930                            vocal intro for posterity */
1931                         /* priv-recordintro script:
1932
1933                            "At the tone, please say your name:"
1934
1935                         */
1936                         int silencethreshold = ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE);
1937                         ast_answer(chan);
1938                         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 */
1939                                                                         /* don't think we'll need a lock removed, we took care of
1940                                                                            conflicts by naming the pa.privintro file */
1941                         if (res == -1) {
1942                                 /* Delete the file regardless since they hung up during recording */
1943                                 ast_filedelete(pa->privintro, NULL);
1944                                 if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1945                                         ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1946                                 else
1947                                         ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1948                                 return -1;
1949                         }
1950                         if (!ast_streamfile(chan, "vm-dialout", ast_channel_language(chan)) )
1951                                 ast_waitstream(chan, "");
1952                 }
1953         }
1954         return 1; /* success */
1955 }
1956
1957 static void end_bridge_callback(void *data)
1958 {
1959         char buf[80];
1960         time_t end;
1961         struct ast_channel *chan = data;
1962
1963         time(&end);
1964
1965         ast_channel_lock(chan);
1966         ast_channel_stage_snapshot(chan);
1967         snprintf(buf, sizeof(buf), "%d", ast_channel_get_up_time(chan));
1968         pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", buf);
1969         snprintf(buf, sizeof(buf), "%d", ast_channel_get_duration(chan));
1970         pbx_builtin_setvar_helper(chan, "DIALEDTIME", buf);
1971         ast_channel_stage_snapshot_done(chan);
1972         ast_channel_unlock(chan);
1973 }
1974
1975 static void end_bridge_callback_data_fixup(struct ast_bridge_config *bconfig, struct ast_channel *originator, struct ast_channel *terminator) {
1976         bconfig->end_bridge_callback_data = originator;
1977 }
1978
1979 static int dial_handle_playtones(struct ast_channel *chan, const char *data)
1980 {
1981         struct ast_tone_zone_sound *ts = NULL;
1982         int res;
1983         const char *str = data;
1984
1985         if (ast_strlen_zero(str)) {
1986                 ast_debug(1,"Nothing to play\n");
1987                 return -1;
1988         }
1989
1990         ts = ast_get_indication_tone(ast_channel_zone(chan), str);
1991
1992         if (ts && ts->data[0]) {
1993                 res = ast_playtones_start(chan, 0, ts->data, 0);
1994         } else {
1995                 res = -1;
1996         }
1997
1998         if (ts) {
1999                 ts = ast_tone_zone_sound_unref(ts);
2000         }
2001
2002         if (res) {
2003                 ast_log(LOG_WARNING, "Unable to start playtone \'%s\'\n", str);
2004         }
2005
2006         return res;
2007 }
2008
2009 /*!
2010  * \internal
2011  * \brief Setup the after bridge goto location on the peer.
2012  * \since 12.0.0
2013  *
2014  * \param chan Calling channel for bridge.
2015  * \param peer Peer channel for bridge.
2016  * \param opts Dialing option flags.
2017  * \param opt_args Dialing option argument strings.
2018  *
2019  * \return Nothing
2020  */
2021 static void setup_peer_after_bridge_goto(struct ast_channel *chan, struct ast_channel *peer, struct ast_flags64 *opts, char *opt_args[])
2022 {
2023         const char *context;
2024         const char *extension;
2025         int priority;
2026
2027         if (ast_test_flag64(opts, OPT_PEER_H)) {
2028                 ast_channel_lock(chan);
2029                 context = ast_strdupa(ast_channel_context(chan));
2030                 ast_channel_unlock(chan);
2031                 ast_bridge_set_after_h(peer, context);
2032         } else if (ast_test_flag64(opts, OPT_CALLEE_GO_ON)) {
2033                 ast_channel_lock(chan);
2034                 context = ast_strdupa(ast_channel_context(chan));
2035                 extension = ast_strdupa(ast_channel_exten(chan));
2036                 priority = ast_channel_priority(chan);
2037                 ast_channel_unlock(chan);
2038                 ast_bridge_set_after_go_on(peer, context, extension, priority,
2039                         opt_args[OPT_ARG_CALLEE_GO_ON]);
2040         }
2041 }
2042
2043 static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)
2044 {
2045         int res = -1; /* default: error */
2046         char *rest, *cur; /* scan the list of destinations */
2047         struct dial_head out_chans = AST_LIST_HEAD_NOLOCK_INIT_VALUE; /* list of destinations */
2048         struct chanlist *outgoing;
2049         struct chanlist *tmp;
2050         struct ast_channel *peer;
2051         int to; /* timeout */
2052         struct cause_args num = { chan, 0, 0, 0 };
2053         int cause;
2054
2055         struct ast_bridge_config config = { { 0, } };
2056         struct timeval calldurationlimit = { 0, };
2057         char *dtmfcalled = NULL, *dtmfcalling = NULL, *dtmf_progress=NULL;
2058         struct privacy_args pa = {
2059                 .sentringing = 0,
2060                 .privdb_val = 0,
2061                 .status = "INVALIDARGS",
2062         };
2063         int sentringing = 0, moh = 0;
2064         const char *outbound_group = NULL;
2065         int result = 0;
2066         char *parse;
2067         int opermode = 0;
2068         int delprivintro = 0;
2069         AST_DECLARE_APP_ARGS(args,
2070                 AST_APP_ARG(peers);
2071                 AST_APP_ARG(timeout);
2072                 AST_APP_ARG(options);
2073                 AST_APP_ARG(url);
2074         );
2075         struct ast_flags64 opts = { 0, };
2076         char *opt_args[OPT_ARG_ARRAY_SIZE];
2077         struct ast_datastore *datastore = NULL;
2078         int fulldial = 0, num_dialed = 0;
2079         int ignore_cc = 0;
2080         char device_name[AST_CHANNEL_NAME];
2081         char forced_clid_name[AST_MAX_EXTENSION];
2082         char stored_clid_name[AST_MAX_EXTENSION];
2083         int force_forwards_only;        /*!< TRUE if force CallerID on call forward only. Legacy behaviour.*/
2084         /*!
2085          * \brief Forced CallerID party information to send.
2086          * \note This will not have any malloced strings so do not free it.
2087          */
2088         struct ast_party_id forced_clid;
2089         /*!
2090          * \brief Stored CallerID information if needed.
2091          *
2092          * \note If OPT_ORIGINAL_CLID set then this is the o option
2093          * CallerID.  Otherwise it is the dialplan extension and hint
2094          * name.
2095          *
2096          * \note This will not have any malloced strings so do not free it.
2097          */
2098         struct ast_party_id stored_clid;
2099         /*!
2100          * \brief CallerID party information to store.
2101          * \note This will not have any malloced strings so do not free it.
2102          */
2103         struct ast_party_caller caller;
2104
2105         /* Reset all DIAL variables back to blank, to prevent confusion (in case we don't reset all of them). */
2106         ast_channel_lock(chan);
2107         ast_channel_stage_snapshot(chan);
2108         pbx_builtin_setvar_helper(chan, "DIALSTATUS", "");
2109         pbx_builtin_setvar_helper(chan, "DIALEDPEERNUMBER", "");
2110         pbx_builtin_setvar_helper(chan, "DIALEDPEERNAME", "");
2111         pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", "");
2112         pbx_builtin_setvar_helper(chan, "DIALEDTIME", "");
2113         ast_channel_stage_snapshot_done(chan);
2114         ast_channel_unlock(chan);
2115
2116         if (ast_strlen_zero(data)) {
2117                 ast_log(LOG_WARNING, "Dial requires an argument (technology/resource)\n");
2118                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2119                 return -1;
2120         }
2121
2122         parse = ast_strdupa(data);
2123
2124         AST_STANDARD_APP_ARGS(args, parse);
2125
2126         if (!ast_strlen_zero(args.options) &&
2127                 ast_app_parse_options64(dial_exec_options, &opts, opt_args, args.options)) {
2128                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2129                 goto done;
2130         }
2131
2132         if (ast_strlen_zero(args.peers)) {
2133                 ast_log(LOG_WARNING, "Dial requires an argument (technology/resource)\n");
2134                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2135                 goto done;
2136         }
2137
2138         if (ast_cc_call_init(chan, &ignore_cc)) {
2139                 goto done;
2140         }
2141
2142         if (ast_test_flag64(&opts, OPT_SCREEN_NOINTRO) && !ast_strlen_zero(opt_args[OPT_ARG_SCREEN_NOINTRO])) {
2143                 delprivintro = atoi(opt_args[OPT_ARG_SCREEN_NOINTRO]);
2144
2145                 if (delprivintro < 0 || delprivintro > 1) {
2146                         ast_log(LOG_WARNING, "Unknown argument %d specified to n option, ignoring\n", delprivintro);
2147                         delprivintro = 0;
2148                 }
2149         }
2150
2151         if (!ast_test_flag64(&opts, OPT_RINGBACK)) {
2152                 opt_args[OPT_ARG_RINGBACK] = NULL;
2153         }
2154
2155         if (ast_test_flag64(&opts, OPT_OPERMODE)) {
2156                 opermode = ast_strlen_zero(opt_args[OPT_ARG_OPERMODE]) ? 1 : atoi(opt_args[OPT_ARG_OPERMODE]);
2157                 ast_verb(3, "Setting operator services mode to %d.\n", opermode);
2158         }
2159
2160         if (ast_test_flag64(&opts, OPT_DURATION_STOP) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_STOP])) {
2161                 calldurationlimit.tv_sec = atoi(opt_args[OPT_ARG_DURATION_STOP]);
2162                 if (!calldurationlimit.tv_sec) {
2163                         ast_log(LOG_WARNING, "Dial does not accept S(%s), hanging up.\n", opt_args[OPT_ARG_DURATION_STOP]);
2164                         pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2165                         goto done;
2166                 }
2167                 ast_verb(3, "Setting call duration limit to %.3lf seconds.\n", calldurationlimit.tv_sec + calldurationlimit.tv_usec / 1000000.0);
2168         }
2169
2170         if (ast_test_flag64(&opts, OPT_SENDDTMF) && !ast_strlen_zero(opt_args[OPT_ARG_SENDDTMF])) {
2171                 dtmf_progress = opt_args[OPT_ARG_SENDDTMF];
2172                 dtmfcalled = strsep(&dtmf_progress, ":");
2173                 dtmfcalling = strsep(&dtmf_progress, ":");
2174         }
2175
2176         if (ast_test_flag64(&opts, OPT_DURATION_LIMIT) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_LIMIT])) {
2177                 if (ast_bridge_timelimit(chan, &config, opt_args[OPT_ARG_DURATION_LIMIT], &calldurationlimit))
2178                         goto done;
2179         }
2180
2181         /* Setup the forced CallerID information to send if used. */
2182         ast_party_id_init(&forced_clid);
2183         force_forwards_only = 0;
2184         if (ast_test_flag64(&opts, OPT_FORCECLID)) {
2185                 if (ast_strlen_zero(opt_args[OPT_ARG_FORCECLID])) {
2186                         ast_channel_lock(chan);
2187                         forced_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2188                         ast_channel_unlock(chan);
2189                         forced_clid_name[0] = '\0';
2190                         forced_clid.name.str = (char *) get_cid_name(forced_clid_name,
2191                                 sizeof(forced_clid_name), chan);
2192                         force_forwards_only = 1;
2193                 } else {
2194                         /* Note: The opt_args[OPT_ARG_FORCECLID] string value is altered here. */
2195                         ast_callerid_parse(opt_args[OPT_ARG_FORCECLID], &forced_clid.name.str,
2196                                 &forced_clid.number.str);
2197                 }
2198                 if (!ast_strlen_zero(forced_clid.name.str)) {
2199                         forced_clid.name.valid = 1;
2200                 }
2201                 if (!ast_strlen_zero(forced_clid.number.str)) {
2202                         forced_clid.number.valid = 1;
2203                 }
2204         }
2205         if (ast_test_flag64(&opts, OPT_FORCE_CID_TAG)
2206                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_TAG])) {
2207                 forced_clid.tag = opt_args[OPT_ARG_FORCE_CID_TAG];
2208         }
2209         forced_clid.number.presentation = AST_PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN;
2210         if (ast_test_flag64(&opts, OPT_FORCE_CID_PRES)
2211                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_PRES])) {
2212                 int pres;
2213
2214                 pres = ast_parse_caller_presentation(opt_args[OPT_ARG_FORCE_CID_PRES]);
2215                 if (0 <= pres) {
2216                         forced_clid.number.presentation = pres;
2217                 }
2218         }
2219
2220         /* Setup the stored CallerID information if needed. */
2221         ast_party_id_init(&stored_clid);
2222         if (ast_test_flag64(&opts, OPT_ORIGINAL_CLID)) {
2223                 if (ast_strlen_zero(opt_args[OPT_ARG_ORIGINAL_CLID])) {
2224                         ast_channel_lock(chan);
2225                         ast_party_id_set_init(&stored_clid, &ast_channel_caller(chan)->id);
2226                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.name.str)) {
2227                                 stored_clid.name.str = ast_strdupa(ast_channel_caller(chan)->id.name.str);
2228                         }
2229                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
2230                                 stored_clid.number.str = ast_strdupa(ast_channel_caller(chan)->id.number.str);
2231                         }
2232                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.subaddress.str)) {
2233                                 stored_clid.subaddress.str = ast_strdupa(ast_channel_caller(chan)->id.subaddress.str);
2234                         }
2235                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.tag)) {
2236                                 stored_clid.tag = ast_strdupa(ast_channel_caller(chan)->id.tag);
2237                         }
2238                         ast_channel_unlock(chan);
2239                 } else {
2240                         /* Note: The opt_args[OPT_ARG_ORIGINAL_CLID] string value is altered here. */
2241                         ast_callerid_parse(opt_args[OPT_ARG_ORIGINAL_CLID], &stored_clid.name.str,
2242                                 &stored_clid.number.str);
2243                         if (!ast_strlen_zero(stored_clid.name.str)) {
2244                                 stored_clid.name.valid = 1;
2245                         }
2246                         if (!ast_strlen_zero(stored_clid.number.str)) {
2247                                 stored_clid.number.valid = 1;
2248                         }
2249                 }
2250         } else {
2251                 /*
2252                  * In case the new channel has no preset CallerID number by the
2253                  * channel driver, setup the dialplan extension and hint name.
2254                  */
2255                 stored_clid_name[0] = '\0';
2256                 stored_clid.name.str = (char *) get_cid_name(stored_clid_name,
2257                         sizeof(stored_clid_name), chan);
2258                 if (ast_strlen_zero(stored_clid.name.str)) {
2259                         stored_clid.name.str = NULL;
2260                 } else {
2261                         stored_clid.name.valid = 1;
2262                 }
2263                 ast_channel_lock(chan);
2264                 stored_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2265                 stored_clid.number.valid = 1;
2266                 ast_channel_unlock(chan);
2267         }
2268
2269         if (ast_test_flag64(&opts, OPT_RESETCDR)) {
2270                 ast_cdr_reset(ast_channel_name(chan), 0);
2271         }
2272         if (ast_test_flag64(&opts, OPT_PRIVACY) && ast_strlen_zero(opt_args[OPT_ARG_PRIVACY]))
2273                 opt_args[OPT_ARG_PRIVACY] = ast_strdupa(ast_channel_exten(chan));
2274
2275         if (ast_test_flag64(&opts, OPT_PRIVACY) || ast_test_flag64(&opts, OPT_SCREENING)) {
2276                 res = setup_privacy_args(&pa, &opts, opt_args, chan);
2277                 if (res <= 0)
2278                         goto out;
2279                 res = -1; /* reset default */
2280         }
2281
2282         if (continue_exec)
2283                 *continue_exec = 0;
2284
2285         /* If a channel group has been specified, get it for use when we create peer channels */
2286
2287         ast_channel_lock(chan);
2288         if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP_ONCE"))) {
2289                 outbound_group = ast_strdupa(outbound_group);
2290                 pbx_builtin_setvar_helper(chan, "OUTBOUND_GROUP_ONCE", NULL);
2291         } else if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP"))) {
2292                 outbound_group = ast_strdupa(outbound_group);
2293         }
2294         ast_channel_unlock(chan);
2295
2296         /* Set per dial instance flags.  These flags are also passed back to RetryDial. */
2297         ast_copy_flags64(peerflags, &opts, OPT_DTMF_EXIT | OPT_GO_ON | OPT_ORIGINAL_CLID
2298                 | OPT_CALLER_HANGUP | OPT_IGNORE_FORWARDING | OPT_CANCEL_TIMEOUT
2299                 | OPT_ANNOUNCE | OPT_CALLEE_MACRO | OPT_CALLEE_GOSUB | OPT_FORCECLID);
2300
2301         /* PREDIAL: Run gosub on the caller's channel */
2302         if (ast_test_flag64(&opts, OPT_PREDIAL_CALLER)
2303                 && !ast_strlen_zero(opt_args[OPT_ARG_PREDIAL_CALLER])) {
2304                 ast_replace_subargument_delimiter(opt_args[OPT_ARG_PREDIAL_CALLER]);
2305                 ast_app_exec_sub(NULL, chan, opt_args[OPT_ARG_PREDIAL_CALLER], 0);
2306         }
2307
2308         /* loop through the list of dial destinations */
2309         rest = args.peers;
2310         while ((cur = strsep(&rest, "&")) ) {
2311                 struct ast_channel *tc; /* channel for this destination */
2312                 /* Get a technology/resource pair */
2313                 char *number = cur;
2314                 char *tech = strsep(&number, "/");
2315                 size_t tech_len;
2316                 size_t number_len;
2317                 /* find if we already dialed this interface */
2318                 struct ast_dialed_interface *di;
2319                 AST_LIST_HEAD(,ast_dialed_interface) *dialed_interfaces;
2320
2321                 num_dialed++;
2322                 if (ast_strlen_zero(number)) {
2323                         ast_log(LOG_WARNING, "Dial argument takes format (technology/resource)\n");
2324                         goto out;
2325                 }
2326
2327                 tech_len = strlen(tech) + 1;
2328                 number_len = strlen(number) + 1;
2329                 tmp = ast_calloc(1, sizeof(*tmp) + (2 * tech_len) + number_len);
2330                 if (!tmp) {
2331                         goto out;
2332                 }
2333
2334                 /* Save tech, number, and interface. */
2335                 cur = tmp->stuff;
2336                 strcpy(cur, tech);
2337                 tmp->tech = cur;
2338                 cur += tech_len;
2339                 strcpy(cur, tech);
2340                 cur[tech_len - 1] = '/';
2341                 tmp->interface = cur;
2342                 cur += tech_len;
2343                 strcpy(cur, number);
2344                 tmp->number = cur;
2345
2346                 if (opts.flags) {
2347                         /* Set per outgoing call leg options. */
2348                         ast_copy_flags64(tmp, &opts,
2349                                 OPT_CANCEL_ELSEWHERE |
2350                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
2351                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
2352                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
2353                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
2354                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
2355                                 OPT_RINGBACK | OPT_MUSICBACK | OPT_FORCECLID | OPT_IGNORE_CONNECTEDLINE |
2356                                 OPT_RING_WITH_EARLY_MEDIA);
2357                         ast_set2_flag64(tmp, args.url, DIAL_NOFORWARDHTML);
2358                 }
2359
2360                 /* Request the peer */
2361
2362                 ast_channel_lock(chan);
2363                 datastore = ast_channel_datastore_find(chan, &dialed_interface_info, NULL);
2364                 /*
2365                  * Seed the chanlist's connected line information with previously
2366                  * acquired connected line info from the incoming channel.  The
2367                  * previously acquired connected line info could have been set
2368                  * through the CONNECTED_LINE dialplan function.
2369                  */
2370                 ast_party_connected_line_copy(&tmp->connected, ast_channel_connected(chan));
2371                 ast_channel_unlock(chan);
2372
2373                 if (datastore)
2374                         dialed_interfaces = datastore->data;
2375                 else {
2376                         if (!(datastore = ast_datastore_alloc(&dialed_interface_info, NULL))) {
2377                                 ast_log(LOG_WARNING, "Unable to create channel datastore for dialed interfaces. Aborting!\n");
2378                                 chanlist_free(tmp);
2379                                 goto out;
2380                         }
2381                         datastore->inheritance = DATASTORE_INHERIT_FOREVER;
2382
2383                         if (!(dialed_interfaces = ast_calloc(1, sizeof(*dialed_interfaces)))) {
2384                                 ast_datastore_free(datastore);
2385                                 chanlist_free(tmp);
2386                                 goto out;
2387                         }
2388
2389                         datastore->data = dialed_interfaces;
2390                         AST_LIST_HEAD_INIT(dialed_interfaces);
2391
2392                         ast_channel_lock(chan);
2393                         ast_channel_datastore_add(chan, datastore);
2394                         ast_channel_unlock(chan);
2395                 }
2396
2397                 AST_LIST_LOCK(dialed_interfaces);
2398                 AST_LIST_TRAVERSE(dialed_interfaces, di, list) {
2399                         if (!strcasecmp(di->interface, tmp->interface)) {
2400                                 ast_log(LOG_WARNING, "Skipping dialing interface '%s' again since it has already been dialed\n",
2401                                         di->interface);
2402                                 break;
2403                         }
2404                 }
2405                 AST_LIST_UNLOCK(dialed_interfaces);
2406                 if (di) {
2407                         fulldial++;
2408                         chanlist_free(tmp);
2409                         continue;
2410                 }
2411
2412                 /* It is always ok to dial a Local interface.  We only keep track of
2413                  * which "real" interfaces have been dialed.  The Local channel will
2414                  * inherit this list so that if it ends up dialing a real interface,
2415                  * it won't call one that has already been called. */
2416                 if (strcasecmp(tmp->tech, "Local")) {
2417                         if (!(di = ast_calloc(1, sizeof(*di) + strlen(tmp->interface)))) {
2418                                 chanlist_free(tmp);
2419                                 goto out;
2420                         }
2421                         strcpy(di->interface, tmp->interface);
2422
2423                         AST_LIST_LOCK(dialed_interfaces);
2424                         AST_LIST_INSERT_TAIL(dialed_interfaces, di, list);
2425                         AST_LIST_UNLOCK(dialed_interfaces);
2426                 }
2427
2428                 tc = ast_request(tmp->tech, ast_channel_nativeformats(chan), NULL, chan, tmp->number, &cause);
2429                 if (!tc) {
2430                         /* If we can't, just go on to the next call */
2431                         ast_log(LOG_WARNING, "Unable to create channel of type '%s' (cause %d - %s)\n",
2432                                 tmp->tech, cause, ast_cause2str(cause));
2433                         handle_cause(cause, &num);
2434                         if (!rest) {
2435                                 /* we are on the last destination */
2436                                 ast_channel_hangupcause_set(chan, cause);
2437                         }
2438                         if (!ignore_cc && (cause == AST_CAUSE_BUSY || cause == AST_CAUSE_CONGESTION)) {
2439                                 if (!ast_cc_callback(chan, tmp->tech, tmp->number, ast_cc_busy_interface)) {
2440                                         ast_cc_extension_monitor_add_dialstring(chan, tmp->interface, "");
2441                                 }
2442                         }
2443                         chanlist_free(tmp);
2444                         continue;
2445                 }
2446
2447                 ast_channel_lock(tc);
2448                 ast_channel_stage_snapshot(tc);
2449                 ast_channel_unlock(tc);
2450
2451                 ast_channel_get_device_name(tc, device_name, sizeof(device_name));
2452                 if (!ignore_cc) {
2453                         ast_cc_extension_monitor_add_dialstring(chan, tmp->interface, device_name);
2454                 }
2455
2456                 ast_channel_lock_both(tc, chan);
2457                 pbx_builtin_setvar_helper(tc, "DIALEDPEERNUMBER", tmp->number);
2458
2459                 /* Setup outgoing SDP to match incoming one */
2460                 if (!AST_LIST_FIRST(&out_chans) && !rest && CAN_EARLY_BRIDGE(peerflags, chan, tc)) {
2461                         /* We are on the only destination. */
2462                         ast_rtp_instance_early_bridge_make_compatible(tc, chan);
2463                 }
2464
2465                 /* Inherit specially named variables from parent channel */
2466                 ast_channel_inherit_variables(chan, tc);
2467                 ast_channel_datastore_inherit(chan, tc);
2468
2469                 ast_channel_appl_set(tc, "AppDial");
2470                 ast_channel_data_set(tc, "(Outgoing Line)");
2471                 ast_channel_publish_snapshot(tc);
2472
2473                 memset(ast_channel_whentohangup(tc), 0, sizeof(*ast_channel_whentohangup(tc)));
2474
2475                 /* Determine CallerID to store in outgoing channel. */
2476                 ast_party_caller_set_init(&caller, ast_channel_caller(tc));
2477                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
2478                         caller.id = stored_clid;
2479                         ast_channel_set_caller_event(tc, &caller, NULL);
2480                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2481                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.number.valid,
2482                         ast_channel_caller(tc)->id.number.str, NULL))) {
2483                         /*
2484                          * The new channel has no preset CallerID number by the channel
2485                          * driver.  Use the dialplan extension and hint name.
2486                          */
2487                         caller.id = stored_clid;
2488                         if (!caller.id.name.valid
2489                                 && !ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2490                                         ast_channel_connected(chan)->id.name.str, NULL))) {
2491                                 /*
2492                                  * No hint name available.  We have a connected name supplied by
2493                                  * the dialplan we can use instead.
2494                                  */
2495                                 caller.id.name.valid = 1;
2496                                 caller.id.name = ast_channel_connected(chan)->id.name;
2497                         }
2498                         ast_channel_set_caller_event(tc, &caller, NULL);
2499                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2500                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.name.valid, ast_channel_caller(tc)->id.name.str,
2501                         NULL))) {
2502                         /* The new channel has no preset CallerID name by the channel driver. */
2503                         if (!ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2504                                 ast_channel_connected(chan)->id.name.str, NULL))) {
2505                                 /*
2506                                  * We have a connected name supplied by the dialplan we can
2507                                  * use instead.
2508                                  */
2509                                 caller.id.name.valid = 1;
2510                                 caller.id.name = ast_channel_connected(chan)->id.name;
2511                                 ast_channel_set_caller_event(tc, &caller, NULL);
2512                         }
2513                 }
2514
2515                 /* Determine CallerID for outgoing channel to send. */
2516                 if (ast_test_flag64(peerflags, OPT_FORCECLID) && !force_forwards_only) {
2517