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