Use ast_channel_lock_both() where it was inlined before.
[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="C">
112                                         <para>Reset the call detail record (CDR) for this call.</para>
113                                 </option>
114                                 <option name="c">
115                                         <para>If the Dial() application cancels this call, always set the flag to tell the channel
116                                         driver that the call is answered elsewhere.</para>
117                                 </option>
118                                 <option name="d">
119                                         <para>Allow the calling user to dial a 1 digit extension while waiting for
120                                         a call to be answered. Exit to that extension if it exists in the
121                                         current context, or the context defined in the <variable>EXITCONTEXT</variable> variable,
122                                         if it exists.</para>
123                                         <note>
124                                                 <para>Many SIP and ISDN phones cannot send DTMF digits until the call is
125                                                 connected.  If you wish to use this option with these phones, you
126                                                 can use the <literal>Answer</literal> application before dialing.</para>
127                                         </note>
128                                 </option>
129                                 <option name="D" argsep=":">
130                                         <argument name="called" />
131                                         <argument name="calling" />
132                                         <argument name="progress" />
133                                         <para>Send the specified DTMF strings <emphasis>after</emphasis> the called
134                                         party has answered, but before the call gets bridged. The 
135                                         <replaceable>called</replaceable> DTMF string is sent to the called party, and the 
136                                         <replaceable>calling</replaceable> DTMF string is sent to the calling party. Both arguments 
137                                         can be used alone.  If <replaceable>progress</replaceable> is specified, its DTMF is sent
138                                         immediately after receiving a PROGRESS message.</para>
139                                 </option>
140                                 <option name="e">
141                                         <para>Execute the <literal>h</literal> extension for peer after the call ends</para>
142                                 </option>
143                                 <option name="f">
144                                         <argument name="x" required="false" />
145                                         <para>If <replaceable>x</replaceable> is not provided, force the CallerID sent on a call-forward or
146                                         deflection to the dialplan extension of this Dial() using a dialplan <literal>hint</literal>.
147                                         For example, some PSTNs do not allow CallerID to be set to anything
148                                         other than the numbers assigned to you.
149                                         If <replaceable>x</replaceable> is provided, force the CallerID sent to <replaceable>x</replaceable>.</para>
150                                 </option>
151                                 <option name="F" argsep="^">
152                                         <argument name="context" required="false" />
153                                         <argument name="exten" required="false" />
154                                         <argument name="priority" required="true" />
155                                         <para>When the caller hangs up, transfer the <emphasis>called</emphasis> party
156                                         to the specified destination and <emphasis>start</emphasis> execution at that location.</para>
157                                         <note>
158                                                 <para>Any channel variables you want the called channel to inherit from the caller channel must be
159                                                 prefixed with one or two underbars ('_').</para>
160                                         </note>
161                                 </option>
162                                 <option name="F">
163                                         <para>When the caller hangs up, transfer the <emphasis>called</emphasis> party to the next priority of the current extension
164                                         and <emphasis>start</emphasis> execution at that location.</para>
165                                         <note>
166                                                 <para>Any channel variables you want the called channel to inherit from the caller channel must be
167                                                 prefixed with one or two underbars ('_').</para>
168                                         </note>
169                                         <note>
170                                                 <para>Using this option from a Macro() or GoSub() might not make sense as there would be no return points.</para>
171                                         </note>
172                                 </option>
173                                 <option name="g">
174                                         <para>Proceed with dialplan execution at the next priority in the current extension if the
175                                         destination channel hangs up.</para>
176                                 </option>
177                                 <option name="G" argsep="^">
178                                         <argument name="context" required="false" />
179                                         <argument name="exten" required="false" />
180                                         <argument name="priority" required="true" />
181                                         <para>If the call is answered, transfer the calling party to
182                                         the specified <replaceable>priority</replaceable> and the called party to the specified 
183                                         <replaceable>priority</replaceable> plus one.</para>
184                                         <note>
185                                                 <para>You cannot use any additional action post answer options in conjunction with this option.</para>
186                                         </note>
187                                 </option>
188                                 <option name="h">
189                                         <para>Allow the called party to hang up by sending the DTMF sequence
190                                         defined for disconnect in <filename>features.conf</filename>.</para>
191                                 </option>
192                                 <option name="H">
193                                         <para>Allow the calling party to hang up by sending the DTMF sequence
194                                         defined for disconnect in <filename>features.conf</filename>.</para>
195                                         <note>
196                                                 <para>Many SIP and ISDN phones cannot send DTMF digits until the call is
197                                                 connected.  If you wish to allow DTMF disconnect before the dialed
198                                                 party answers with these phones, you can use the <literal>Answer</literal>
199                                                 application before dialing.</para>
200                                         </note>
201                                 </option>
202                                 <option name="i">
203                                         <para>Asterisk will ignore any forwarding requests it may receive on this dial attempt.</para>
204                                 </option>
205                                 <option name="I">
206                                         <para>Asterisk will ignore any connected line update requests or any redirecting party
207                                         update requests it may receive on this dial attempt.</para>
208                                 </option>
209                                 <option name="k">
210                                         <para>Allow the called party to enable parking of the call by sending
211                                         the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
212                                 </option>
213                                 <option name="K">
214                                         <para>Allow the calling party to enable parking of the call by sending
215                                         the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
216                                 </option>
217                                 <option name="L" argsep=":">
218                                         <argument name="x" required="true">
219                                                 <para>Maximum call time, in milliseconds</para>
220                                         </argument>
221                                         <argument name="y">
222                                                 <para>Warning time, in milliseconds</para>
223                                         </argument>
224                                         <argument name="z">
225                                                 <para>Repeat time, in milliseconds</para>
226                                         </argument>
227                                         <para>Limit the call to <replaceable>x</replaceable> milliseconds. Play a warning when <replaceable>y</replaceable> milliseconds are
228                                         left. Repeat the warning every <replaceable>z</replaceable> milliseconds until time expires.</para>
229                                         <para>This option is affected by the following variables:</para>
230                                         <variablelist>
231                                                 <variable name="LIMIT_PLAYAUDIO_CALLER">
232                                                         <value name="yes" default="true" />
233                                                         <value name="no" />
234                                                         <para>If set, this variable causes Asterisk to play the prompts to the caller.</para>
235                                                 </variable>
236                                                 <variable name="LIMIT_PLAYAUDIO_CALLEE">
237                                                         <value name="yes" />
238                                                         <value name="no" default="true"/>
239                                                         <para>If set, this variable causes Asterisk to play the prompts to the callee.</para>
240                                                 </variable>
241                                                 <variable name="LIMIT_TIMEOUT_FILE">
242                                                         <value name="filename"/>
243                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play when the timeout is reached.
244                                                         If not set, the time remaining will be announced.</para>
245                                                 </variable>
246                                                 <variable name="LIMIT_CONNECT_FILE">
247                                                         <value name="filename"/>
248                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play when the call begins.
249                                                         If not set, the time remaining will be announced.</para>
250                                                 </variable>
251                                                 <variable name="LIMIT_WARNING_FILE">
252                                                         <value name="filename"/>
253                                                         <para>If specified, <replaceable>filename</replaceable> specifies the sound prompt to play as
254                                                         a warning when time <replaceable>x</replaceable> is reached. If not set, the time remaining will be announced.</para>
255                                                 </variable>
256                                         </variablelist>
257                                 </option>
258                                 <option name="m">
259                                         <argument name="class" required="false"/>
260                                         <para>Provide hold music to the calling party until a requested
261                                         channel answers. A specific music on hold <replaceable>class</replaceable>
262                                         (as defined in <filename>musiconhold.conf</filename>) can be specified.</para>
263                                 </option>
264                                 <option name="M" argsep="^">
265                                         <argument name="macro" required="true">
266                                                 <para>Name of the macro that should be executed.</para>
267                                         </argument>
268                                         <argument name="arg" multiple="true">
269                                                 <para>Macro arguments</para>
270                                         </argument>
271                                         <para>Execute the specified <replaceable>macro</replaceable> for the <emphasis>called</emphasis> channel 
272                                         before connecting to the calling channel. Arguments can be specified to the Macro
273                                         using <literal>^</literal> as a delimiter. The macro can set the variable
274                                         <variable>MACRO_RESULT</variable> to specify the following actions after the macro is
275                                         finished executing:</para>
276                                         <variablelist>
277                                                 <variable name="MACRO_RESULT">
278                                                         <para>If set, this action will be taken after the macro finished executing.</para>
279                                                         <value name="ABORT">
280                                                                 Hangup both legs of the call
281                                                         </value>
282                                                         <value name="CONGESTION">
283                                                                 Behave as if line congestion was encountered
284                                                         </value>
285                                                         <value name="BUSY">
286                                                                 Behave as if a busy signal was encountered
287                                                         </value>
288                                                         <value name="CONTINUE">
289                                                                 Hangup the called party and allow the calling party to continue dialplan execution at the next priority
290                                                         </value>
291                                                         <!-- TODO: Fix this syntax up, once we've figured out how to specify the GOTO syntax -->
292                                                         <value name="GOTO:&lt;context&gt;^&lt;exten&gt;^&lt;priority&gt;">
293                                                                 Transfer the call to the specified destination.
294                                                         </value>
295                                                 </variable>
296                                         </variablelist>
297                                         <note>
298                                                 <para>You cannot use any additional action post answer options in conjunction
299                                                 with this option. Also, pbx services are not run on the peer (called) channel,
300                                                 so you will not be able to set timeouts via the TIMEOUT() function in this macro.</para>
301                                         </note>
302                                         <warning><para>Be aware of the limitations that macros have, specifically with regards to use of
303                                         the <literal>WaitExten</literal> application. For more information, see the documentation for
304                                         Macro()</para></warning>
305                                 </option>
306                                 <option name="n">
307                                         <argument name="delete">
308                                                 <para>With <replaceable>delete</replaceable> either not specified or set to <literal>0</literal>,
309                                                 the recorded introduction will not be deleted if the caller hangs up while the remote party has not
310                                                 yet answered.</para>
311                                                 <para>With <replaceable>delete</replaceable> set to <literal>1</literal>, the introduction will
312                                                 always be deleted.</para>
313                                         </argument>
314                                         <para>This option is a modifier for the call screening/privacy mode. (See the 
315                                         <literal>p</literal> and <literal>P</literal> options.) It specifies
316                                         that no introductions are to be saved in the <directory>priv-callerintros</directory>
317                                         directory.</para>
318                                 </option>
319                                 <option name="N">
320                                         <para>This option is a modifier for the call screening/privacy mode. It specifies
321                                         that if Caller*ID is present, do not screen the call.</para>
322                                 </option>
323                                 <option name="o">
324                                         <argument name="x" required="false" />
325                                         <para>If <replaceable>x</replaceable> is not provided, specify that the CallerID that was present on the
326                                         <emphasis>calling</emphasis> channel be stored as the CallerID on the <emphasis>called</emphasis> channel.
327                                         This was the behavior of Asterisk 1.0 and earlier.
328                                         If <replaceable>x</replaceable> is provided, specify the CallerID stored on the <emphasis>called</emphasis> channel.
329                                         Note that o(${CALLERID(all)}) is similar to option o without the parameter.</para>
330                                 </option>
331                                 <option name="O">
332                                         <argument name="mode">
333                                                 <para>With <replaceable>mode</replaceable> either not specified or set to <literal>1</literal>,
334                                                 the originator hanging up will cause the phone to ring back immediately.</para>
335                                                 <para>With <replaceable>mode</replaceable> set to <literal>2</literal>, when the operator 
336                                                 flashes the trunk, it will ring their phone back.</para>
337                                         </argument>
338                                         <para>Enables <emphasis>operator services</emphasis> mode.  This option only
339                                         works when bridging a DAHDI channel to another DAHDI channel
340                                         only. if specified on non-DAHDI interfaces, it will be ignored.
341                                         When the destination answers (presumably an operator services
342                                         station), the originator no longer has control of their line.
343                                         They may hang up, but the switch will not release their line
344                                         until the destination party (the operator) hangs up.</para>
345                                 </option>
346                                 <option name="p">
347                                         <para>This option enables screening mode. This is basically Privacy mode
348                                         without memory.</para>
349                                 </option>
350                                 <option name="P">
351                                         <argument name="x" />
352                                         <para>Enable privacy mode. Use <replaceable>x</replaceable> as the family/key in the AstDB database if
353                                         it is provided. The current extension is used if a database family/key is not specified.</para>
354                                 </option>
355                                 <option name="r">
356                                         <para>Default: Indicate ringing to the calling party, even if the called party isn't actually ringing. Pass no audio to the calling
357                                         party until the called channel has answered.</para>
358                                         <argument name="tone" required="false">
359                                                 <para>Indicate progress to calling party. Send audio 'tone' from indications.conf</para>
360                                         </argument>
361                                 </option>
362                                 <option name="S">
363                                         <argument name="x" required="true" />
364                                         <para>Hang up the call <replaceable>x</replaceable> seconds <emphasis>after</emphasis> the called party has
365                                         answered the call.</para>
366                                 </option>
367                                 <option name="s">
368                                         <argument name="x" required="true" />
369                                         <para>Force the outgoing callerid tag parameter to be set to the string <replaceable>x</replaceable>.</para>
370                                         <para>Works with the f option.</para>
371                                 </option>
372                                 <option name="t">
373                                         <para>Allow the called party to transfer the calling party by sending the
374                                         DTMF sequence defined in <filename>features.conf</filename>. This setting does not perform policy enforcement on
375                                         transfers initiated by other methods.</para>
376                                 </option>
377                                 <option name="T">
378                                         <para>Allow the calling party to transfer the called party by sending the
379                                         DTMF sequence defined in <filename>features.conf</filename>. This setting does not perform policy enforcement on
380                                         transfers initiated by other methods.</para>
381                                 </option>
382                                 <option name="U" argsep="^">
383                                         <argument name="x" required="true">
384                                                 <para>Name of the subroutine to execute via Gosub</para>
385                                         </argument>
386                                         <argument name="arg" multiple="true" required="false">
387                                                 <para>Arguments for the Gosub routine</para>
388                                         </argument>
389                                         <para>Execute via Gosub the routine <replaceable>x</replaceable> for the <emphasis>called</emphasis> channel before connecting
390                                         to the calling channel. Arguments can be specified to the Gosub
391                                         using <literal>^</literal> as a delimiter. The Gosub routine can set the variable
392                                         <variable>GOSUB_RESULT</variable> to specify the following actions after the Gosub returns.</para>
393                                         <variablelist>
394                                                 <variable name="GOSUB_RESULT">
395                                                         <value name="ABORT">
396                                                                 Hangup both legs of the call.
397                                                         </value>
398                                                         <value name="CONGESTION">
399                                                                 Behave as if line congestion was encountered.
400                                                         </value>
401                                                         <value name="BUSY">
402                                                                 Behave as if a busy signal was encountered.
403                                                         </value>
404                                                         <value name="CONTINUE">
405                                                                 Hangup the called party and allow the calling party
406                                                                 to continue dialplan execution at the next priority.
407                                                         </value>
408                                                         <!-- TODO: Fix this syntax up, once we've figured out how to specify the GOTO syntax -->
409                                                         <value name="GOTO:&lt;context&gt;^&lt;exten&gt;^&lt;priority&gt;">
410                                                                 Transfer the call to the specified priority. Optionally, an extension, or
411                                                                 extension and priority can be specified.
412                                                         </value>
413                                                 </variable>
414                                         </variablelist>
415                                         <note>
416                                                 <para>You cannot use any additional action post answer options in conjunction
417                                                 with this option. Also, pbx services are not run on the peer (called) channel,
418                                                 so you will not be able to set timeouts via the TIMEOUT() function in this routine.</para>
419                                         </note>
420                                 </option>
421                                 <option name="u">
422                                         <argument name = "x" required="true">
423                                                 <para>Force the outgoing callerid presentation indicator parameter to be set
424                                                 to one of the values passed in <replaceable>x</replaceable>:
425                                                 <literal>allowed_not_screened</literal>
426                                                 <literal>allowed_passed_screen</literal>
427                                                 <literal>allowed_failed_screen</literal>
428                                                 <literal>allowed</literal>
429                                                 <literal>prohib_not_screened</literal>
430                                                 <literal>prohib_passed_screen</literal>
431                                                 <literal>prohib_failed_screen</literal>
432                                                 <literal>prohib</literal>
433                                                 <literal>unavailable</literal></para>
434                                         </argument>
435                                         <para>Works with the f option.</para>
436                                 </option>
437                                 <option name="w">
438                                         <para>Allow the called party to enable recording of the call by sending
439                                         the DTMF sequence defined for one-touch recording in <filename>features.conf</filename>.</para>
440                                 </option>
441                                 <option name="W">
442                                         <para>Allow the calling party to enable recording of the call by sending
443                                         the DTMF sequence defined for one-touch recording in <filename>features.conf</filename>.</para>
444                                 </option>
445                                 <option name="x">
446                                         <para>Allow the called party to enable recording of the call by sending
447                                         the DTMF sequence defined for one-touch automixmonitor in <filename>features.conf</filename>.</para>
448                                 </option>
449                                 <option name="X">
450                                         <para>Allow the calling party to enable recording of the call by sending
451                                         the DTMF sequence defined for one-touch automixmonitor in <filename>features.conf</filename>.</para>
452                                 </option>
453                                 <option name="z">
454                                         <para>On a call forward, cancel any dial timeout which has been set for this call.</para>
455                                 </option>
456                                 </optionlist>
457                         </parameter>
458                         <parameter name="URL">
459                                 <para>The optional URL will be sent to the called party if the channel driver supports it.</para>
460                         </parameter>
461                 </syntax>
462                 <description>
463                         <para>This application will place calls to one or more specified channels. As soon
464                         as one of the requested channels answers, the originating channel will be
465                         answered, if it has not already been answered. These two channels will then
466                         be active in a bridged call. All other channels that were requested will then
467                         be hung up.</para>
468
469                         <para>Unless there is a timeout specified, the Dial application will wait
470                         indefinitely until one of the called channels answers, the user hangs up, or
471                         if all of the called channels are busy or unavailable. Dialplan executing will
472                         continue if no requested channels can be called, or if the timeout expires.
473                         This application will report normal termination if the originating channel
474                         hangs up, or if the call is bridged and either of the parties in the bridge
475                         ends the call.</para>
476                         <para>If the <variable>OUTBOUND_GROUP</variable> variable is set, all peer channels created by this
477                         application will be put into that group (as in Set(GROUP()=...).
478                         If the <variable>OUTBOUND_GROUP_ONCE</variable> variable is set, all peer channels created by this
479                         application will be put into that group (as in Set(GROUP()=...). Unlike <variable>OUTBOUND_GROUP</variable>,
480                         however, the variable will be unset after use.</para>
481
482                         <para>This application sets the following channel variables:</para>
483                         <variablelist>
484                                 <variable name="DIALEDTIME">
485                                         <para>This is the time from dialing a channel until when it is disconnected.</para>
486                                 </variable>
487                                 <variable name="ANSWEREDTIME">
488                                         <para>This is the amount of time for actual call.</para>
489                                 </variable>
490                                 <variable name="DIALSTATUS">
491                                         <para>This is the status of the call</para>
492                                         <value name="CHANUNAVAIL" />
493                                         <value name="CONGESTION" />
494                                         <value name="NOANSWER" />
495                                         <value name="BUSY" />
496                                         <value name="ANSWER" />
497                                         <value name="CANCEL" />
498                                         <value name="DONTCALL">
499                                                 For the Privacy and Screening Modes.
500                                                 Will be set if the called party chooses to send the calling party to the 'Go Away' script.
501                                         </value>
502                                         <value name="TORTURE">
503                                                 For the Privacy and Screening Modes.
504                                                 Will be set if the called party chooses to send the calling party to the 'torture' script.
505                                         </value>
506                                         <value name="INVALIDARGS" />
507                                 </variable>
508                         </variablelist>
509                 </description>
510         </application>
511         <application name="RetryDial" language="en_US">
512                 <synopsis>
513                         Place a call, retrying on failure allowing an optional exit extension.
514                 </synopsis>
515                 <syntax>
516                         <parameter name="announce" required="true">
517                                 <para>Filename of sound that will be played when no channel can be reached</para>
518                         </parameter>
519                         <parameter name="sleep" required="true">
520                                 <para>Number of seconds to wait after a dial attempt failed before a new attempt is made</para>
521                         </parameter>
522                         <parameter name="retries" required="true">
523                                 <para>Number of retries</para>
524                                 <para>When this is reached flow will continue at the next priority in the dialplan</para>
525                         </parameter>
526                         <parameter name="dialargs" required="true">
527                                 <para>Same format as arguments provided to the Dial application</para>
528                         </parameter>
529                 </syntax>
530                 <description>
531                         <para>This application will attempt to place a call using the normal Dial application.
532                         If no channel can be reached, the <replaceable>announce</replaceable> file will be played.
533                         Then, it will wait <replaceable>sleep</replaceable> number of seconds before retrying the call.
534                         After <replaceable>retries</replaceable> number of attempts, the calling channel will continue at the next priority in the dialplan.
535                         If the <replaceable>retries</replaceable> setting is set to 0, this application will retry endlessly.
536                         While waiting to retry a call, a 1 digit extension may be dialed. If that
537                         extension exists in either the context defined in <variable>EXITCONTEXT</variable> or the current
538                         one, The call will jump to that extension immediately.
539                         The <replaceable>dialargs</replaceable> are specified in the same format that arguments are provided
540                         to the Dial application.</para>
541                 </description>
542         </application>
543  ***/
544
545 static const char app[] = "Dial";
546 static const char rapp[] = "RetryDial";
547
548 enum {
549         OPT_ANNOUNCE =          (1 << 0),
550         OPT_RESETCDR =          (1 << 1),
551         OPT_DTMF_EXIT =         (1 << 2),
552         OPT_SENDDTMF =          (1 << 3),
553         OPT_FORCECLID =         (1 << 4),
554         OPT_GO_ON =             (1 << 5),
555         OPT_CALLEE_HANGUP =     (1 << 6),
556         OPT_CALLER_HANGUP =     (1 << 7),
557         OPT_ORIGINAL_CLID =     (1 << 8),
558         OPT_DURATION_LIMIT =    (1 << 9),
559         OPT_MUSICBACK =         (1 << 10),
560         OPT_CALLEE_MACRO =      (1 << 11),
561         OPT_SCREEN_NOINTRO =    (1 << 12),
562         OPT_SCREEN_NOCALLERID = (1 << 13),
563         OPT_IGNORE_CONNECTEDLINE = (1 << 14),
564         OPT_SCREENING =         (1 << 15),
565         OPT_PRIVACY =           (1 << 16),
566         OPT_RINGBACK =          (1 << 17),
567         OPT_DURATION_STOP =     (1 << 18),
568         OPT_CALLEE_TRANSFER =   (1 << 19),
569         OPT_CALLER_TRANSFER =   (1 << 20),
570         OPT_CALLEE_MONITOR =    (1 << 21),
571         OPT_CALLER_MONITOR =    (1 << 22),
572         OPT_GOTO =              (1 << 23),
573         OPT_OPERMODE =          (1 << 24),
574         OPT_CALLEE_PARK =       (1 << 25),
575         OPT_CALLER_PARK =       (1 << 26),
576         OPT_IGNORE_FORWARDING = (1 << 27),
577         OPT_CALLEE_GOSUB =      (1 << 28),
578         OPT_CALLEE_MIXMONITOR = (1 << 29),
579         OPT_CALLER_MIXMONITOR = (1 << 30),
580 };
581
582 /* flags are now 64 bits, so keep it up! */
583 #define DIAL_STILLGOING      (1LLU << 31)
584 #define DIAL_NOFORWARDHTML   (1LLU << 32)
585 #define DIAL_CALLERID_ABSENT (1LLU << 33) /* TRUE if caller id is not available for connected line. */
586 #define OPT_CANCEL_ELSEWHERE (1LLU << 34)
587 #define OPT_PEER_H           (1LLU << 35)
588 #define OPT_CALLEE_GO_ON     (1LLU << 36)
589 #define OPT_CANCEL_TIMEOUT   (1LLU << 37)
590 #define OPT_FORCE_CID_TAG    (1LLU << 38)
591 #define OPT_FORCE_CID_PRES   (1LLU << 39)
592 #define OPT_CALLER_ANSWER    (1LLU << 40)
593
594 enum {
595         OPT_ARG_ANNOUNCE = 0,
596         OPT_ARG_SENDDTMF,
597         OPT_ARG_GOTO,
598         OPT_ARG_DURATION_LIMIT,
599         OPT_ARG_MUSICBACK,
600         OPT_ARG_CALLEE_MACRO,
601         OPT_ARG_RINGBACK,
602         OPT_ARG_CALLEE_GOSUB,
603         OPT_ARG_CALLEE_GO_ON,
604         OPT_ARG_PRIVACY,
605         OPT_ARG_DURATION_STOP,
606         OPT_ARG_OPERMODE,
607         OPT_ARG_SCREEN_NOINTRO,
608         OPT_ARG_ORIGINAL_CLID,
609         OPT_ARG_FORCECLID,
610         OPT_ARG_FORCE_CID_TAG,
611         OPT_ARG_FORCE_CID_PRES,
612         /* note: this entry _MUST_ be the last one in the enum */
613         OPT_ARG_ARRAY_SIZE,
614 };
615
616 AST_APP_OPTIONS(dial_exec_options, BEGIN_OPTIONS
617         AST_APP_OPTION_ARG('A', OPT_ANNOUNCE, OPT_ARG_ANNOUNCE),
618         AST_APP_OPTION('a', OPT_CALLER_ANSWER),
619         AST_APP_OPTION('C', OPT_RESETCDR),
620         AST_APP_OPTION('c', OPT_CANCEL_ELSEWHERE),
621         AST_APP_OPTION('d', OPT_DTMF_EXIT),
622         AST_APP_OPTION_ARG('D', OPT_SENDDTMF, OPT_ARG_SENDDTMF),
623         AST_APP_OPTION('e', OPT_PEER_H),
624         AST_APP_OPTION_ARG('f', OPT_FORCECLID, OPT_ARG_FORCECLID),
625         AST_APP_OPTION_ARG('F', OPT_CALLEE_GO_ON, OPT_ARG_CALLEE_GO_ON),
626         AST_APP_OPTION('g', OPT_GO_ON),
627         AST_APP_OPTION_ARG('G', OPT_GOTO, OPT_ARG_GOTO),
628         AST_APP_OPTION('h', OPT_CALLEE_HANGUP),
629         AST_APP_OPTION('H', OPT_CALLER_HANGUP),
630         AST_APP_OPTION('i', OPT_IGNORE_FORWARDING),
631         AST_APP_OPTION('I', OPT_IGNORE_CONNECTEDLINE),
632         AST_APP_OPTION('k', OPT_CALLEE_PARK),
633         AST_APP_OPTION('K', OPT_CALLER_PARK),
634         AST_APP_OPTION_ARG('L', OPT_DURATION_LIMIT, OPT_ARG_DURATION_LIMIT),
635         AST_APP_OPTION_ARG('m', OPT_MUSICBACK, OPT_ARG_MUSICBACK),
636         AST_APP_OPTION_ARG('M', OPT_CALLEE_MACRO, OPT_ARG_CALLEE_MACRO),
637         AST_APP_OPTION_ARG('n', OPT_SCREEN_NOINTRO, OPT_ARG_SCREEN_NOINTRO),
638         AST_APP_OPTION('N', OPT_SCREEN_NOCALLERID),
639         AST_APP_OPTION_ARG('o', OPT_ORIGINAL_CLID, OPT_ARG_ORIGINAL_CLID),
640         AST_APP_OPTION_ARG('O', OPT_OPERMODE, OPT_ARG_OPERMODE),
641         AST_APP_OPTION('p', OPT_SCREENING),
642         AST_APP_OPTION_ARG('P', OPT_PRIVACY, OPT_ARG_PRIVACY),
643         AST_APP_OPTION_ARG('r', OPT_RINGBACK, OPT_ARG_RINGBACK),
644         AST_APP_OPTION_ARG('S', OPT_DURATION_STOP, OPT_ARG_DURATION_STOP),
645         AST_APP_OPTION_ARG('s', OPT_FORCE_CID_TAG, OPT_ARG_FORCE_CID_TAG),
646         AST_APP_OPTION_ARG('u', OPT_FORCE_CID_PRES, OPT_ARG_FORCE_CID_PRES),
647         AST_APP_OPTION('t', OPT_CALLEE_TRANSFER),
648         AST_APP_OPTION('T', OPT_CALLER_TRANSFER),
649         AST_APP_OPTION_ARG('U', OPT_CALLEE_GOSUB, OPT_ARG_CALLEE_GOSUB),
650         AST_APP_OPTION('w', OPT_CALLEE_MONITOR),
651         AST_APP_OPTION('W', OPT_CALLER_MONITOR),
652         AST_APP_OPTION('x', OPT_CALLEE_MIXMONITOR),
653         AST_APP_OPTION('X', OPT_CALLER_MIXMONITOR),
654         AST_APP_OPTION('z', OPT_CANCEL_TIMEOUT),
655 END_OPTIONS );
656
657 #define CAN_EARLY_BRIDGE(flags,chan,peer) (!ast_test_flag64(flags, OPT_CALLEE_HANGUP | \
658         OPT_CALLER_HANGUP | OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER | \
659         OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR | OPT_CALLEE_PARK |  \
660         OPT_CALLER_PARK | OPT_ANNOUNCE | OPT_CALLEE_MACRO | OPT_CALLEE_GOSUB) && \
661         !ast_channel_audiohooks(chan) && !ast_channel_audiohooks(peer) && \
662         ast_framehook_list_is_empty(ast_channel_framehooks(chan)) && ast_framehook_list_is_empty(ast_channel_framehooks(peer)))
663
664 /*
665  * The list of active channels
666  */
667 struct chanlist {
668         struct chanlist *next;
669         struct ast_channel *chan;
670         uint64_t flags;
671         /*! Saved connected party info from an AST_CONTROL_CONNECTED_LINE. */
672         struct ast_party_connected_line connected;
673         /*! TRUE if an AST_CONTROL_CONNECTED_LINE update was saved to the connected element. */
674         unsigned int pending_connected_update:1;
675         struct ast_aoc_decoded *aoc_s_rate_list;
676 };
677
678 static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str *featurecode);
679
680 static void chanlist_free(struct chanlist *outgoing)
681 {
682         ast_party_connected_line_free(&outgoing->connected);
683         ast_aoc_destroy_decoded(outgoing->aoc_s_rate_list);
684         ast_free(outgoing);
685 }
686
687 static void hanguptree(struct chanlist *outgoing, struct ast_channel *exception, int answered_elsewhere)
688 {
689         /* Hang up a tree of stuff */
690         struct chanlist *oo;
691         while (outgoing) {
692                 /* Hangup any existing lines we have open */
693                 if (outgoing->chan && (outgoing->chan != exception)) {
694                         if (answered_elsewhere) {
695                                 /* The flag is used for local channel inheritance and stuff */
696                                 ast_set_flag(ast_channel_flags(outgoing->chan), AST_FLAG_ANSWERED_ELSEWHERE);
697                                 /* This is for the channel drivers */
698                                 ast_channel_hangupcause_set(outgoing->chan, AST_CAUSE_ANSWERED_ELSEWHERE);
699                         }
700                         ast_hangup(outgoing->chan);
701                 }
702                 oo = outgoing;
703                 outgoing = outgoing->next;
704                 chanlist_free(oo);
705         }
706 }
707
708 #define AST_MAX_WATCHERS 256
709
710 /*
711  * argument to handle_cause() and other functions.
712  */
713 struct cause_args {
714         struct ast_channel *chan;
715         int busy;
716         int congestion;
717         int nochan;
718 };
719
720 static void handle_cause(int cause, struct cause_args *num)
721 {
722         struct ast_cdr *cdr = ast_channel_cdr(num->chan);
723
724         switch(cause) {
725         case AST_CAUSE_BUSY:
726                 if (cdr)
727                         ast_cdr_busy(cdr);
728                 num->busy++;
729                 break;
730
731         case AST_CAUSE_CONGESTION:
732                 if (cdr)
733                         ast_cdr_failed(cdr);
734                 num->congestion++;
735                 break;
736
737         case AST_CAUSE_NO_ROUTE_DESTINATION:
738         case AST_CAUSE_UNREGISTERED:
739                 if (cdr)
740                         ast_cdr_failed(cdr);
741                 num->nochan++;
742                 break;
743
744         case AST_CAUSE_NO_ANSWER:
745                 if (cdr) {
746                         ast_cdr_noanswer(cdr);
747                 }
748                 break;
749         case AST_CAUSE_NORMAL_CLEARING:
750                 break;
751
752         default:
753                 num->nochan++;
754                 break;
755         }
756 }
757
758 static int onedigit_goto(struct ast_channel *chan, const char *context, char exten, int pri)
759 {
760         char rexten[2] = { exten, '\0' };
761
762         if (context) {
763                 if (!ast_goto_if_exists(chan, context, rexten, pri))
764                         return 1;
765         } else {
766                 if (!ast_goto_if_exists(chan, ast_channel_context(chan), rexten, pri))
767                         return 1;
768                 else if (!ast_strlen_zero(ast_channel_macrocontext(chan))) {
769                         if (!ast_goto_if_exists(chan, ast_channel_macrocontext(chan), rexten, pri))
770                                 return 1;
771                 }
772         }
773         return 0;
774 }
775
776 /* do not call with chan lock held */
777 static const char *get_cid_name(char *name, int namelen, struct ast_channel *chan)
778 {
779         const char *context;
780         const char *exten;
781
782         ast_channel_lock(chan);
783         context = ast_strdupa(S_OR(ast_channel_macrocontext(chan), ast_channel_context(chan)));
784         exten = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
785         ast_channel_unlock(chan);
786
787         return ast_get_hint(NULL, 0, name, namelen, chan, context, exten) ? name : "";
788 }
789
790 static void senddialevent(struct ast_channel *src, struct ast_channel *dst, const char *dialstring)
791 {
792         struct ast_channel *chans[] = { src, dst };
793         ast_manager_event_multichan(EVENT_FLAG_CALL, "Dial", 2, chans,
794                 "SubEvent: Begin\r\n"
795                 "Channel: %s\r\n"
796                 "Destination: %s\r\n"
797                 "CallerIDNum: %s\r\n"
798                 "CallerIDName: %s\r\n"
799                 "ConnectedLineNum: %s\r\n"
800                 "ConnectedLineName: %s\r\n"
801                 "UniqueID: %s\r\n"
802                 "DestUniqueID: %s\r\n"
803                 "Dialstring: %s\r\n",
804                 ast_channel_name(src), ast_channel_name(dst),
805                 S_COR(ast_channel_caller(src)->id.number.valid, ast_channel_caller(src)->id.number.str, "<unknown>"),
806                 S_COR(ast_channel_caller(src)->id.name.valid, ast_channel_caller(src)->id.name.str, "<unknown>"),
807                 S_COR(ast_channel_connected(src)->id.number.valid, ast_channel_connected(src)->id.number.str, "<unknown>"),
808                 S_COR(ast_channel_connected(src)->id.name.valid, ast_channel_connected(src)->id.name.str, "<unknown>"),
809                 ast_channel_uniqueid(src), ast_channel_uniqueid(dst),
810                 dialstring ? dialstring : "");
811 }
812
813 static void senddialendevent(struct ast_channel *src, const char *dialstatus)
814 {
815         ast_manager_event(src, EVENT_FLAG_CALL, "Dial",
816                 "SubEvent: End\r\n"
817                 "Channel: %s\r\n"
818                 "UniqueID: %s\r\n"
819                 "DialStatus: %s\r\n",
820                 ast_channel_name(src), ast_channel_uniqueid(src), dialstatus);
821 }
822
823 /*!
824  * helper function for wait_for_answer()
825  *
826  * \param o Outgoing call channel list.
827  * \param num Incoming call channel cause accumulation
828  * \param peerflags Dial option flags
829  * \param single_caller_bored From wait_for_answer: single && !caller_entertained
830  * \param to Remaining call timeout time.
831  * \param forced_clid OPT_FORCECLID caller id to send
832  * \param stored_clid Caller id representing the called party if needed
833  *
834  * XXX this code is highly suspicious, as it essentially overwrites
835  * the outgoing channel without properly deleting it.
836  *
837  * \todo eventually this function should be intergrated into and replaced by ast_call_forward()
838  */
839 static void do_forward(struct chanlist *o,
840         struct cause_args *num, struct ast_flags64 *peerflags, int single_caller_bored, int *to,
841         struct ast_party_id *forced_clid, struct ast_party_id *stored_clid)
842 {
843         char tmpchan[256];
844         struct ast_channel *original = o->chan;
845         struct ast_channel *c = o->chan; /* the winner */
846         struct ast_channel *in = num->chan; /* the input channel */
847         char *stuff;
848         char *tech;
849         int cause;
850         struct ast_party_caller caller;
851
852         ast_copy_string(tmpchan, ast_channel_call_forward(c), sizeof(tmpchan));
853         if ((stuff = strchr(tmpchan, '/'))) {
854                 *stuff++ = '\0';
855                 tech = tmpchan;
856         } else {
857                 const char *forward_context;
858                 ast_channel_lock(c);
859                 forward_context = pbx_builtin_getvar_helper(c, "FORWARD_CONTEXT");
860                 if (ast_strlen_zero(forward_context)) {
861                         forward_context = NULL;
862                 }
863                 snprintf(tmpchan, sizeof(tmpchan), "%s@%s", ast_channel_call_forward(c), forward_context ? forward_context : ast_channel_context(c));
864                 ast_channel_unlock(c);
865                 stuff = tmpchan;
866                 tech = "Local";
867         }
868
869         ast_cel_report_event(in, AST_CEL_FORWARD, NULL, ast_channel_call_forward(c), NULL);
870
871         /* Before processing channel, go ahead and check for forwarding */
872         ast_verb(3, "Now forwarding %s to '%s/%s' (thanks to %s)\n", ast_channel_name(in), tech, stuff, ast_channel_name(c));
873         /* If we have been told to ignore forwards, just set this channel to null and continue processing extensions normally */
874         if (ast_test_flag64(peerflags, OPT_IGNORE_FORWARDING)) {
875                 ast_verb(3, "Forwarding %s to '%s/%s' prevented.\n", ast_channel_name(in), tech, stuff);
876                 c = o->chan = NULL;
877                 cause = AST_CAUSE_BUSY;
878         } else {
879                 /* Setup parameters */
880                 c = o->chan = ast_request(tech, ast_channel_nativeformats(in), in, stuff, &cause);
881                 if (c) {
882                         if (single_caller_bored) {
883                                 ast_channel_make_compatible(o->chan, in);
884                         }
885                         ast_channel_inherit_variables(in, o->chan);
886                         ast_channel_datastore_inherit(in, o->chan);
887                         /* When a call is forwarded, we don't want to track new interfaces
888                          * dialed for CC purposes. Setting the done flag will ensure that
889                          * any Dial operations that happen later won't record CC interfaces.
890                          */
891                         ast_ignore_cc(o->chan);
892                         ast_log(LOG_NOTICE, "Not accepting call completion offers from call-forward recipient %s\n", ast_channel_name(o->chan));
893                 } else
894                         ast_log(LOG_NOTICE,
895                                 "Forwarding failed to create channel to dial '%s/%s' (cause = %d)\n",
896                                 tech, stuff, cause);
897         }
898         if (!c) {
899                 ast_clear_flag64(o, DIAL_STILLGOING);
900                 handle_cause(cause, num);
901                 ast_hangup(original);
902         } else {
903                 struct ast_party_redirecting redirecting;
904
905                 ast_channel_lock_both(c, in);
906
907                 if (single_caller_bored && CAN_EARLY_BRIDGE(peerflags, c, in)) {
908                         ast_rtp_instance_early_bridge_make_compatible(c, in);
909                 }
910
911                 ast_channel_set_redirecting(c, ast_channel_redirecting(original), NULL);
912                 if (!ast_channel_redirecting(c)->from.number.valid
913                         || ast_strlen_zero(ast_channel_redirecting(c)->from.number.str)) {
914                         /*
915                          * The call was not previously redirected so it is
916                          * now redirected from this number.
917                          */
918                         ast_party_number_free(&ast_channel_redirecting(c)->from.number);
919                         ast_party_number_init(&ast_channel_redirecting(c)->from.number);
920                         ast_channel_redirecting(c)->from.number.valid = 1;
921                         ast_channel_redirecting(c)->from.number.str =
922                                 ast_strdup(S_OR(ast_channel_macroexten(in), ast_channel_exten(in)));
923                 }
924
925                 ast_channel_dialed(c)->transit_network_select = ast_channel_dialed(in)->transit_network_select;
926
927                 /* Determine CallerID to store in outgoing channel. */
928                 ast_party_caller_set_init(&caller, ast_channel_caller(c));
929                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
930                         caller.id = *stored_clid;
931                         ast_channel_set_caller_event(c, &caller, NULL);
932                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(c)->id.number.valid,
933                         ast_channel_caller(c)->id.number.str, NULL))) {
934                         /*
935                          * The new channel has no preset CallerID number by the channel
936                          * driver.  Use the dialplan extension and hint name.
937                          */
938                         caller.id = *stored_clid;
939                         ast_channel_set_caller_event(c, &caller, NULL);
940                 }
941
942                 /* Determine CallerID for outgoing channel to send. */
943                 if (ast_test_flag64(o, OPT_FORCECLID)) {
944                         struct ast_party_connected_line connected;
945
946                         ast_party_connected_line_init(&connected);
947                         connected.id = *forced_clid;
948                         ast_party_connected_line_copy(ast_channel_connected(c), &connected);
949                 } else {
950                         ast_connected_line_copy_from_caller(ast_channel_connected(c), ast_channel_caller(in));
951                 }
952
953                 ast_channel_accountcode_set(c, ast_channel_accountcode(in));
954
955                 ast_channel_appl_set(c, "AppDial");
956                 ast_channel_data_set(c, "(Outgoing Line)");
957                 /*
958                  * We must unlock c before calling ast_channel_redirecting_macro, because
959                  * we put c into autoservice there. That is pretty much a guaranteed
960                  * deadlock. This is why the handling of c's lock may seem a bit unusual
961                  * here.
962                  */
963                 ast_party_redirecting_init(&redirecting);
964                 ast_party_redirecting_copy(&redirecting, ast_channel_redirecting(c));
965                 ast_channel_unlock(c);
966                 if (ast_channel_redirecting_sub(c, in, &redirecting, 0) &&
967                         ast_channel_redirecting_macro(c, in, &redirecting, 1, 0)) {
968                         ast_channel_update_redirecting(in, &redirecting, NULL);
969                 }
970                 ast_party_redirecting_free(&redirecting);
971                 ast_channel_unlock(in);
972
973                 ast_clear_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE);
974                 if (ast_test_flag64(peerflags, OPT_CANCEL_TIMEOUT)) {
975                         *to = -1;
976                 }
977
978                 if (ast_call(c, stuff, 0)) {
979                         ast_log(LOG_NOTICE, "Forwarding failed to dial '%s/%s'\n",
980                                 tech, stuff);
981                         ast_clear_flag64(o, DIAL_STILLGOING);
982                         ast_hangup(original);
983                         ast_hangup(c);
984                         c = o->chan = NULL;
985                         num->nochan++;
986                 } else {
987                         ast_channel_lock_both(c, in);
988                         senddialevent(in, c, stuff);
989                         ast_channel_unlock(in);
990                         ast_channel_unlock(c);
991                         /* Hangup the original channel now, in case we needed it */
992                         ast_hangup(original);
993                 }
994                 if (single_caller_bored) {
995                         ast_indicate(in, -1);
996                 }
997         }
998 }
999
1000 /* argument used for some functions. */
1001 struct privacy_args {
1002         int sentringing;
1003         int privdb_val;
1004         char privcid[256];
1005         char privintro[1024];
1006         char status[256];
1007 };
1008
1009 static struct ast_channel *wait_for_answer(struct ast_channel *in,
1010         struct chanlist *outgoing, int *to, struct ast_flags64 *peerflags,
1011         char *opt_args[],
1012         struct privacy_args *pa,
1013         const struct cause_args *num_in, int *result, char *dtmf_progress,
1014         const int ignore_cc,
1015         struct ast_party_id *forced_clid, struct ast_party_id *stored_clid)
1016 {
1017         struct cause_args num = *num_in;
1018         int prestart = num.busy + num.congestion + num.nochan;
1019         int orig = *to;
1020         struct ast_channel *peer = NULL;
1021         /* single is set if only one destination is enabled */
1022         int single = outgoing && !outgoing->next;
1023         int caller_entertained = outgoing
1024                 && ast_test_flag64(outgoing, OPT_MUSICBACK | OPT_RINGBACK);
1025 #ifdef HAVE_EPOLL
1026         struct chanlist *epollo;
1027 #endif
1028         struct ast_party_connected_line connected_caller;
1029         struct ast_str *featurecode = ast_str_alloca(FEATURE_MAX_LEN + 1);
1030         int cc_recall_core_id;
1031         int is_cc_recall;
1032         int cc_frame_received = 0;
1033         int num_ringing = 0;
1034
1035         ast_party_connected_line_init(&connected_caller);
1036         if (single) {
1037                 /* Turn off hold music, etc */
1038                 if (!caller_entertained) {
1039                         ast_deactivate_generator(in);
1040                         /* If we are calling a single channel, and not providing ringback or music, */
1041                         /* then, make them compatible for in-band tone purpose */
1042                         if (ast_channel_make_compatible(outgoing->chan, in) < 0) {
1043                                 /* If these channels can not be made compatible, 
1044                                  * there is no point in continuing.  The bridge
1045                                  * will just fail if it gets that far.
1046                                  */
1047                                 *to = -1;
1048                                 strcpy(pa->status, "CONGESTION");
1049                                 ast_cdr_failed(ast_channel_cdr(in));
1050                                 return NULL;
1051                         }
1052                 }
1053
1054                 if (!ast_test_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE) && !ast_test_flag64(outgoing, DIAL_CALLERID_ABSENT)) {
1055                         ast_channel_lock(outgoing->chan);
1056                         ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(outgoing->chan));
1057                         ast_channel_unlock(outgoing->chan);
1058                         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1059                         if (ast_channel_connected_line_sub(outgoing->chan, in, &connected_caller, 0) &&
1060                                 ast_channel_connected_line_macro(outgoing->chan, in, &connected_caller, 1, 0)) {
1061                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
1062                         }
1063                         ast_party_connected_line_free(&connected_caller);
1064                 }
1065         }
1066
1067         is_cc_recall = ast_cc_is_recall(in, &cc_recall_core_id, NULL);
1068
1069 #ifdef HAVE_EPOLL
1070         for (epollo = outgoing; epollo; epollo = epollo->next)
1071                 ast_poll_channel_add(in, epollo->chan);
1072 #endif
1073
1074         while (*to && !peer) {
1075                 struct chanlist *o;
1076                 int pos = 0; /* how many channels do we handle */
1077                 int numlines = prestart;
1078                 struct ast_channel *winner;
1079                 struct ast_channel *watchers[AST_MAX_WATCHERS];
1080
1081                 watchers[pos++] = in;
1082                 for (o = outgoing; o; o = o->next) {
1083                         /* Keep track of important channels */
1084                         if (ast_test_flag64(o, DIAL_STILLGOING) && o->chan)
1085                                 watchers[pos++] = o->chan;
1086                         numlines++;
1087                 }
1088                 if (pos == 1) { /* only the input channel is available */
1089                         if (numlines == (num.busy + num.congestion + num.nochan)) {
1090                                 ast_verb(2, "Everyone is busy/congested at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1091                                 if (num.busy)
1092                                         strcpy(pa->status, "BUSY");
1093                                 else if (num.congestion)
1094                                         strcpy(pa->status, "CONGESTION");
1095                                 else if (num.nochan)
1096                                         strcpy(pa->status, "CHANUNAVAIL");
1097                         } else {
1098                                 ast_verb(3, "No one is available to answer at this time (%d:%d/%d/%d)\n", numlines, num.busy, num.congestion, num.nochan);
1099                         }
1100                         *to = 0;
1101                         if (is_cc_recall) {
1102                                 ast_cc_failed(cc_recall_core_id, "Everyone is busy/congested for the recall. How sad");
1103                         }
1104                         return NULL;
1105                 }
1106                 winner = ast_waitfor_n(watchers, pos, to);
1107                 for (o = outgoing; o; o = o->next) {
1108                         struct ast_frame *f;
1109                         struct ast_channel *c = o->chan;
1110
1111                         if (c == NULL)
1112                                 continue;
1113                         if (ast_test_flag64(o, DIAL_STILLGOING) && ast_channel_state(c) == AST_STATE_UP) {
1114                                 if (!peer) {
1115                                         ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1116                                         if (!single && !ast_test_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE)) {
1117                                                 if (o->pending_connected_update) {
1118                                                         if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1119                                                                 ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1120                                                                 ast_channel_update_connected_line(in, &o->connected, NULL);
1121                                                         }
1122                                                 } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1123                                                         ast_channel_lock(c);
1124                                                         ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(c));
1125                                                         ast_channel_unlock(c);
1126                                                         connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1127                                                         if (ast_channel_connected_line_sub(c, in, &connected_caller, 0) &&
1128                                                                 ast_channel_connected_line_macro(c, in, &connected_caller, 1, 0)) {
1129                                                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
1130                                                         }
1131                                                         ast_party_connected_line_free(&connected_caller);
1132                                                 }
1133                                         }
1134                                         if (o->aoc_s_rate_list) {
1135                                                 size_t encoded_size;
1136                                                 struct ast_aoc_encoded *encoded;
1137                                                 if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1138                                                         ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1139                                                         ast_aoc_destroy_encoded(encoded);
1140                                                 }
1141                                         }
1142                                         peer = c;
1143                                         ast_copy_flags64(peerflags, o,
1144                                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1145                                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1146                                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1147                                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
1148                                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1149                                                 DIAL_NOFORWARDHTML);
1150                                         ast_channel_dialcontext_set(c, "");
1151                                         ast_channel_exten_set(c, "");
1152                                 }
1153                                 continue;
1154                         }
1155                         if (c != winner)
1156                                 continue;
1157                         /* here, o->chan == c == winner */
1158                         if (!ast_strlen_zero(ast_channel_call_forward(c))) {
1159                                 pa->sentringing = 0;
1160                                 if (!ignore_cc && (f = ast_read(c))) {
1161                                         if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_CC) {
1162                                                 /* This channel is forwarding the call, and is capable of CC, so
1163                                                  * be sure to add the new device interface to the list
1164                                                  */
1165                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1166                                         }
1167                                         ast_frfree(f);
1168                                 }
1169                                 do_forward(o, &num, peerflags, single && !caller_entertained, to,
1170                                         forced_clid, stored_clid);
1171                                 continue;
1172                         }
1173                         f = ast_read(winner);
1174                         if (!f) {
1175                                 ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1176 #ifdef HAVE_EPOLL
1177                                 ast_poll_channel_del(in, c);
1178 #endif
1179                                 ast_hangup(c);
1180                                 c = o->chan = NULL;
1181                                 ast_clear_flag64(o, DIAL_STILLGOING);
1182                                 handle_cause(ast_channel_hangupcause(in), &num);
1183                                 continue;
1184                         }
1185                         switch (f->frametype) {
1186                         case AST_FRAME_CONTROL:
1187                                 switch (f->subclass.integer) {
1188                                 case AST_CONTROL_ANSWER:
1189                                         /* This is our guy if someone answered. */
1190                                         if (!peer) {
1191                                                 ast_verb(3, "%s answered %s\n", ast_channel_name(c), ast_channel_name(in));
1192                                                 if (!single && !ast_test_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE)) {
1193                                                         if (o->pending_connected_update) {
1194                                                                 if (ast_channel_connected_line_sub(c, in, &o->connected, 0) &&
1195                                                                         ast_channel_connected_line_macro(c, in, &o->connected, 1, 0)) {
1196                                                                         ast_channel_update_connected_line(in, &o->connected, NULL);
1197                                                                 }
1198                                                         } else if (!ast_test_flag64(o, DIAL_CALLERID_ABSENT)) {
1199                                                                 ast_channel_lock(c);
1200                                                                 ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(c));
1201                                                                 ast_channel_unlock(c);
1202                                                                 connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
1203                                                                 if (ast_channel_connected_line_sub(c, in, &connected_caller, 0) &&
1204                                                                         ast_channel_connected_line_macro(c, in, &connected_caller, 1, 0)) {
1205                                                                         ast_channel_update_connected_line(in, &connected_caller, NULL);
1206                                                                 }
1207                                                                 ast_party_connected_line_free(&connected_caller);
1208                                                         }
1209                                                 }
1210                                                 if (o->aoc_s_rate_list) {
1211                                                         size_t encoded_size;
1212                                                         struct ast_aoc_encoded *encoded;
1213                                                         if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
1214                                                                 ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
1215                                                                 ast_aoc_destroy_encoded(encoded);
1216                                                         }
1217                                                 }
1218                                                 peer = c;
1219                                                 if (ast_channel_cdr(peer)) {
1220                                                         ast_channel_cdr(peer)->answer = ast_tvnow();
1221                                                         ast_channel_cdr(peer)->disposition = AST_CDR_ANSWERED;
1222                                                 }
1223                                                 ast_copy_flags64(peerflags, o,
1224                                                         OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
1225                                                         OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
1226                                                         OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
1227                                                         OPT_CALLEE_PARK | OPT_CALLER_PARK |
1228                                                         OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
1229                                                         DIAL_NOFORWARDHTML);
1230                                                 ast_channel_dialcontext_set(c, "");
1231                                                 ast_channel_exten_set(c, "");
1232                                                 if (CAN_EARLY_BRIDGE(peerflags, in, peer))
1233                                                         /* Setup early bridge if appropriate */
1234                                                         ast_channel_early_bridge(in, peer);
1235                                         }
1236                                         /* If call has been answered, then the eventual hangup is likely to be normal hangup */
1237                                         ast_channel_hangupcause_set(in, AST_CAUSE_NORMAL_CLEARING);
1238                                         ast_channel_hangupcause_set(c, AST_CAUSE_NORMAL_CLEARING);
1239                                         break;
1240                                 case AST_CONTROL_BUSY:
1241                                         ast_verb(3, "%s is busy\n", ast_channel_name(c));
1242                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1243                                         ast_hangup(c);
1244                                         c = o->chan = NULL;
1245                                         ast_clear_flag64(o, DIAL_STILLGOING);
1246                                         handle_cause(AST_CAUSE_BUSY, &num);
1247                                         break;
1248                                 case AST_CONTROL_CONGESTION:
1249                                         ast_verb(3, "%s is circuit-busy\n", ast_channel_name(c));
1250                                         ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
1251                                         ast_hangup(c);
1252                                         c = o->chan = NULL;
1253                                         ast_clear_flag64(o, DIAL_STILLGOING);
1254                                         handle_cause(AST_CAUSE_CONGESTION, &num);
1255                                         break;
1256                                 case AST_CONTROL_RINGING:
1257                                         /* This is a tricky area to get right when using a native
1258                                          * CC agent. The reason is that we do the best we can to send only a
1259                                          * single ringing notification to the caller.
1260                                          *
1261                                          * Call completion complicates the logic used here. CCNR is typically
1262                                          * offered during a ringing message. Let's say that party A calls
1263                                          * parties B, C, and D. B and C do not support CC requests, but D
1264                                          * does. If we were to receive a ringing notification from B before
1265                                          * the others, then we would end up sending a ringing message to
1266                                          * A with no CCNR offer present.
1267                                          *
1268                                          * The approach that we have taken is that if we receive a ringing
1269                                          * response from a party and no CCNR offer is present, we need to
1270                                          * wait. Specifically, we need to wait until either a) a called party
1271                                          * offers CCNR in its ringing response or b) all called parties have
1272                                          * responded in some way to our call and none offers CCNR.
1273                                          *
1274                                          * The drawback to this is that if one of the parties has a delayed
1275                                          * response or, god forbid, one just plain doesn't respond to our
1276                                          * outgoing call, then this will result in a significant delay between
1277                                          * when the caller places the call and hears ringback.
1278                                          *
1279                                          * Note also that if CC is disabled for this call, then it is perfectly
1280                                          * fine for ringing frames to get sent through.
1281                                          */
1282                                         ++num_ringing;
1283                                         if (ignore_cc || cc_frame_received || num_ringing == numlines) {
1284                                                 ast_verb(3, "%s is ringing\n", ast_channel_name(c));
1285                                                 /* Setup early media if appropriate */
1286                                                 if (single && !caller_entertained
1287                                                         && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1288                                                         ast_channel_early_bridge(in, c);
1289                                                 }
1290                                                 if (!(pa->sentringing) && !ast_test_flag64(outgoing, OPT_MUSICBACK) && ast_strlen_zero(opt_args[OPT_ARG_RINGBACK])) {
1291                                                         ast_indicate(in, AST_CONTROL_RINGING);
1292                                                         pa->sentringing++;
1293                                                 }
1294                                         }
1295                                         break;
1296                                 case AST_CONTROL_PROGRESS:
1297                                         ast_verb(3, "%s is making progress passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1298                                         /* Setup early media if appropriate */
1299                                         if (single && !caller_entertained
1300                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1301                                                 ast_channel_early_bridge(in, c);
1302                                         }
1303                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK)) {
1304                                                 if (single || (!single && !pa->sentringing)) {
1305                                                         ast_indicate(in, AST_CONTROL_PROGRESS);
1306                                                 }
1307                                         }
1308                                         if (!ast_strlen_zero(dtmf_progress)) {
1309                                                 ast_verb(3,
1310                                                         "Sending DTMF '%s' to the called party as result of receiving a PROGRESS message.\n",
1311                                                         dtmf_progress);
1312                                                 ast_dtmf_stream(c, in, dtmf_progress, 250, 0);
1313                                         }
1314                                         break;
1315                                 case AST_CONTROL_VIDUPDATE:
1316                                 case AST_CONTROL_SRCUPDATE:
1317                                 case AST_CONTROL_SRCCHANGE:
1318                                         if (!single || caller_entertained) {
1319                                                 break;
1320                                         }
1321                                         ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1322                                                 ast_channel_name(c), f->subclass.integer, ast_channel_name(in));
1323                                         ast_indicate(in, f->subclass.integer);
1324                                         break;
1325                                 case AST_CONTROL_CONNECTED_LINE:
1326                                         if (ast_test_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE)) {
1327                                                 ast_verb(3, "Connected line update to %s prevented.\n", ast_channel_name(in));
1328                                         } else if (!single) {
1329                                                 struct ast_party_connected_line connected;
1330                                                 ast_verb(3, "%s connected line has changed. Saving it until answer for %s\n", ast_channel_name(c), ast_channel_name(in));
1331                                                 ast_party_connected_line_set_init(&connected, &o->connected);
1332                                                 ast_connected_line_parse_data(f->data.ptr, f->datalen, &connected);
1333                                                 ast_party_connected_line_set(&o->connected, &connected, NULL);
1334                                                 ast_party_connected_line_free(&connected);
1335                                                 o->pending_connected_update = 1;
1336                                         } else {
1337                                                 if (ast_channel_connected_line_sub(c, in, f, 1) &&
1338                                                         ast_channel_connected_line_macro(c, in, f, 1, 1)) {
1339                                                         ast_indicate_data(in, AST_CONTROL_CONNECTED_LINE, f->data.ptr, f->datalen);
1340                                                 }
1341                                         }
1342                                         break;
1343                                 case AST_CONTROL_AOC:
1344                                         {
1345                                                 struct ast_aoc_decoded *decoded = ast_aoc_decode(f->data.ptr, f->datalen, o->chan);
1346                                                 if (decoded && (ast_aoc_get_msg_type(decoded) == AST_AOC_S)) {
1347                                                         ast_aoc_destroy_decoded(o->aoc_s_rate_list);
1348                                                         o->aoc_s_rate_list = decoded;
1349                                                 } else {
1350                                                         ast_aoc_destroy_decoded(decoded);
1351                                                 }
1352                                         }
1353                                         break;
1354                                 case AST_CONTROL_REDIRECTING:
1355                                         if (ast_test_flag64(peerflags, OPT_IGNORE_CONNECTEDLINE)) {
1356                                                 ast_verb(3, "Redirecting update to %s prevented.\n", ast_channel_name(in));
1357                                         } else if (single) {
1358                                                 ast_verb(3, "%s redirecting info has changed, passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1359                                                 if (ast_channel_redirecting_sub(c, in, f, 1) &&
1360                                                         ast_channel_redirecting_macro(c, in, f, 1, 1)) {
1361                                                         ast_indicate_data(in, AST_CONTROL_REDIRECTING, f->data.ptr, f->datalen);
1362                                                 }
1363                                                 pa->sentringing = 0;
1364                                         }
1365                                         break;
1366                                 case AST_CONTROL_PROCEEDING:
1367                                         ast_verb(3, "%s is proceeding passing it to %s\n", ast_channel_name(c), ast_channel_name(in));
1368                                         if (single && !caller_entertained
1369                                                 && CAN_EARLY_BRIDGE(peerflags, in, c)) {
1370                                                 ast_channel_early_bridge(in, c);
1371                                         }
1372                                         if (!ast_test_flag64(outgoing, OPT_RINGBACK))
1373                                                 ast_indicate(in, AST_CONTROL_PROCEEDING);
1374                                         break;
1375                                 case AST_CONTROL_HOLD:
1376                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1377                                         ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(c));
1378                                         ast_indicate_data(in, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1379                                         break;
1380                                 case AST_CONTROL_UNHOLD:
1381                                         /* XXX this should be saved like AST_CONTROL_CONNECTED_LINE for !single || caller_entertained */
1382                                         ast_verb(3, "Call on %s left from hold\n", ast_channel_name(c));
1383                                         ast_indicate(in, AST_CONTROL_UNHOLD);
1384                                         break;
1385                                 case AST_CONTROL_OFFHOOK:
1386                                 case AST_CONTROL_FLASH:
1387                                         /* Ignore going off hook and flash */
1388                                         break;
1389                                 case AST_CONTROL_CC:
1390                                         if (!ignore_cc) {
1391                                                 ast_handle_cc_control_frame(in, c, f->data.ptr);
1392                                                 cc_frame_received = 1;
1393                                         }
1394                                         break;
1395                                 case -1:
1396                                         if (single && !caller_entertained) {
1397                                                 ast_verb(3, "%s stopped sounds\n", ast_channel_name(c));
1398                                                 ast_indicate(in, -1);
1399                                                 pa->sentringing = 0;
1400                                         }
1401                                         break;
1402                                 default:
1403                                         ast_debug(1, "Dunno what to do with control type %d\n", f->subclass.integer);
1404                                         break;
1405                                 }
1406                                 break;
1407                         case AST_FRAME_VOICE:
1408                         case AST_FRAME_IMAGE:
1409                                 if (caller_entertained) {
1410                                         break;
1411                                 }
1412                                 /* Fall through */
1413                         case AST_FRAME_TEXT:
1414                                 if (single && ast_write(in, f)) {
1415                                         ast_log(LOG_WARNING, "Unable to write frametype: %d\n",
1416                                                 f->frametype);
1417                                 }
1418                                 break;
1419                         case AST_FRAME_HTML:
1420                                 if (single && !ast_test_flag64(outgoing, DIAL_NOFORWARDHTML)
1421                                         && ast_channel_sendhtml(in, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1422                                         ast_log(LOG_WARNING, "Unable to send URL\n");
1423                                 }
1424                                 break;
1425                         default:
1426                                 break;
1427                         }
1428                         ast_frfree(f);
1429                 } /* end for */
1430                 if (winner == in) {
1431                         struct ast_frame *f = ast_read(in);
1432 #if 0
1433                         if (f && (f->frametype != AST_FRAME_VOICE))
1434                                 printf("Frame type: %d, %d\n", f->frametype, f->subclass);
1435                         else if (!f || (f->frametype != AST_FRAME_VOICE))
1436                                 printf("Hangup received on %s\n", in->name);
1437 #endif
1438                         if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP))) {
1439                                 /* Got hung up */
1440                                 *to = -1;
1441                                 strcpy(pa->status, "CANCEL");
1442                                 ast_cdr_noanswer(ast_channel_cdr(in));
1443                                 if (f) {
1444                                         if (f->data.uint32) {
1445                                                 ast_channel_hangupcause_set(in, f->data.uint32);
1446                                         }
1447                                         ast_frfree(f);
1448                                 }
1449                                 if (is_cc_recall) {
1450                                         ast_cc_completed(in, "CC completed, although the caller hung up (cancelled)");
1451                                 }
1452                                 return NULL;
1453                         }
1454
1455                         /* now f is guaranteed non-NULL */
1456                         if (f->frametype == AST_FRAME_DTMF) {
1457                                 if (ast_test_flag64(peerflags, OPT_DTMF_EXIT)) {
1458                                         const char *context;
1459                                         ast_channel_lock(in);
1460                                         context = pbx_builtin_getvar_helper(in, "EXITCONTEXT");
1461                                         if (onedigit_goto(in, context, (char) f->subclass.integer, 1)) {
1462                                                 ast_verb(3, "User hit %c to disconnect call.\n", f->subclass.integer);
1463                                                 *to = 0;
1464                                                 ast_cdr_noanswer(ast_channel_cdr(in));
1465                                                 *result = f->subclass.integer;
1466                                                 strcpy(pa->status, "CANCEL");
1467                                                 ast_frfree(f);
1468                                                 ast_channel_unlock(in);
1469                                                 if (is_cc_recall) {
1470                                                         ast_cc_completed(in, "CC completed, but the caller used DTMF to exit");
1471                                                 }
1472                                                 return NULL;
1473                                         }
1474                                         ast_channel_unlock(in);
1475                                 }
1476
1477                                 if (ast_test_flag64(peerflags, OPT_CALLER_HANGUP) &&
1478                                         detect_disconnect(in, f->subclass.integer, featurecode)) {
1479                                         ast_verb(3, "User requested call disconnect.\n");
1480                                         *to = 0;
1481                                         strcpy(pa->status, "CANCEL");
1482                                         ast_cdr_noanswer(ast_channel_cdr(in));
1483                                         ast_frfree(f);
1484                                         if (is_cc_recall) {
1485                                                 ast_cc_completed(in, "CC completed, but the caller hung up with DTMF");
1486                                         }
1487                                         return NULL;
1488                                 }
1489                         }
1490
1491                         /* Send the frame from the in channel to all outgoing channels. */
1492                         for (o = outgoing; o; o = o->next) {
1493                                 if (!o->chan || !ast_test_flag64(o, DIAL_STILLGOING)) {
1494                                         /* This outgoing channel has died so don't send the frame to it. */
1495                                         continue;
1496                                 }
1497                                 switch (f->frametype) {
1498                                 case AST_FRAME_HTML:
1499                                         /* Forward HTML stuff */
1500                                         if (!ast_test_flag64(o, DIAL_NOFORWARDHTML)
1501                                                 && ast_channel_sendhtml(o->chan, f->subclass.integer, f->data.ptr, f->datalen) == -1) {
1502                                                 ast_log(LOG_WARNING, "Unable to send URL\n");
1503                                         }
1504                                         break;
1505                                 case AST_FRAME_VOICE:
1506                                 case AST_FRAME_IMAGE:
1507                                         if (!single || caller_entertained) {
1508                                                 /*
1509                                                  * We are calling multiple parties or caller is being
1510                                                  * entertained and has thus not been made compatible.
1511                                                  * No need to check any other called parties.
1512                                                  */
1513                                                 goto skip_frame;
1514                                         }
1515                                         /* Fall through */
1516                                 case AST_FRAME_TEXT:
1517                                 case AST_FRAME_DTMF_BEGIN:
1518                                 case AST_FRAME_DTMF_END:
1519                                         if (ast_write(o->chan, f)) {
1520                                                 ast_log(LOG_WARNING, "Unable to forward frametype: %d\n",
1521                                                         f->frametype);
1522                                         }
1523                                         break;
1524                                 case AST_FRAME_CONTROL:
1525                                         switch (f->subclass.integer) {
1526                                         case AST_CONTROL_HOLD:
1527                                                 ast_verb(3, "Call on %s placed on hold\n", ast_channel_name(o->chan));
1528                                                 ast_indicate_data(o->chan, AST_CONTROL_HOLD, f->data.ptr, f->datalen);
1529                                                 break;
1530                                         case AST_CONTROL_UNHOLD:
1531                                                 ast_verb(3, "Call on %s left from hold\n", ast_channel_name(o->chan));
1532                                                 ast_indicate(o->chan, AST_CONTROL_UNHOLD);
1533                                                 break;
1534                                         case AST_CONTROL_VIDUPDATE:
1535                                         case AST_CONTROL_SRCUPDATE:
1536                                         case AST_CONTROL_SRCCHANGE:
1537                                                 if (!single || caller_entertained) {
1538                                                         /*
1539                                                          * We are calling multiple parties or caller is being
1540                                                          * entertained and has thus not been made compatible.
1541                                                          * No need to check any other called parties.
1542                                                          */
1543                                                         goto skip_frame;
1544                                                 }
1545                                                 ast_verb(3, "%s requested media update control %d, passing it to %s\n",
1546                                                         ast_channel_name(in), f->subclass.integer, ast_channel_name(o->chan));
1547                                                 ast_indicate(o->chan, f->subclass.integer);
1548                                                 break;
1549                                         case AST_CONTROL_CONNECTED_LINE:
1550                                                 if (ast_channel_connected_line_sub(in, o->chan, f, 1) &&
1551                                                         ast_channel_connected_line_macro(in, o->chan, f, 0, 1)) {
1552                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1553                                                 }
1554                                                 break;
1555                                         case AST_CONTROL_REDIRECTING:
1556                                                 if (ast_channel_redirecting_sub(in, o->chan, f, 1) &&
1557                                                         ast_channel_redirecting_macro(in, o->chan, f, 0, 1)) {
1558                                                         ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
1559                                                 }
1560                                                 break;
1561                                         default:
1562                                                 /* We are not going to do anything with this frame. */
1563                                                 goto skip_frame;
1564                                         }
1565                                         break;
1566                                 default:
1567                                         /* We are not going to do anything with this frame. */
1568                                         goto skip_frame;
1569                                 }
1570                         }
1571 skip_frame:;
1572                         ast_frfree(f);
1573                 }
1574                 if (!*to)
1575                         ast_verb(3, "Nobody picked up in %d ms\n", orig);
1576                 if (!*to || ast_check_hangup(in))
1577                         ast_cdr_noanswer(ast_channel_cdr(in));
1578         }
1579
1580 #ifdef HAVE_EPOLL
1581         for (epollo = outgoing; epollo; epollo = epollo->next) {
1582                 if (epollo->chan)
1583                         ast_poll_channel_del(in, epollo->chan);
1584         }
1585 #endif
1586
1587         if (is_cc_recall) {
1588                 ast_cc_completed(in, "Recall completed!");
1589         }
1590         return peer;
1591 }
1592
1593 static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str *featurecode)
1594 {
1595         struct ast_flags features = { AST_FEATURE_DISCONNECT }; /* only concerned with disconnect feature */
1596         struct ast_call_feature feature = { 0, };
1597         int res;
1598
1599         ast_str_append(&featurecode, 1, "%c", code);
1600
1601         res = ast_feature_detect(chan, &features, ast_str_buffer(featurecode), &feature);
1602
1603         if (res != AST_FEATURE_RETURN_STOREDIGITS) {
1604                 ast_str_reset(featurecode);
1605         }
1606         if (feature.feature_mask & AST_FEATURE_DISCONNECT) {
1607                 return 1;
1608         }
1609
1610         return 0;
1611 }
1612
1613 /* returns true if there is a valid privacy reply */
1614 static int valid_priv_reply(struct ast_flags64 *opts, int res)
1615 {
1616         if (res < '1')
1617                 return 0;
1618         if (ast_test_flag64(opts, OPT_PRIVACY) && res <= '5')
1619                 return 1;
1620         if (ast_test_flag64(opts, OPT_SCREENING) && res <= '4')
1621                 return 1;
1622         return 0;
1623 }
1624
1625 static int do_privacy(struct ast_channel *chan, struct ast_channel *peer,
1626         struct ast_flags64 *opts, char **opt_args, struct privacy_args *pa)
1627 {
1628
1629         int res2;
1630         int loopcount = 0;
1631
1632         /* Get the user's intro, store it in priv-callerintros/$CID,
1633            unless it is already there-- this should be done before the
1634            call is actually dialed  */
1635
1636         /* all ring indications and moh for the caller has been halted as soon as the
1637            target extension was picked up. We are going to have to kill some
1638            time and make the caller believe the peer hasn't picked up yet */
1639
1640         if (ast_test_flag64(opts, OPT_MUSICBACK) && !ast_strlen_zero(opt_args[OPT_ARG_MUSICBACK])) {
1641                 char *original_moh = ast_strdupa(ast_channel_musicclass(chan));
1642                 ast_indicate(chan, -1);
1643                 ast_channel_musicclass_set(chan, opt_args[OPT_ARG_MUSICBACK]);
1644                 ast_moh_start(chan, opt_args[OPT_ARG_MUSICBACK], NULL);
1645                 ast_channel_musicclass_set(chan, original_moh);
1646         } else if (ast_test_flag64(opts, OPT_RINGBACK)) {
1647                 ast_indicate(chan, AST_CONTROL_RINGING);
1648                 pa->sentringing++;
1649         }
1650
1651         /* Start autoservice on the other chan ?? */
1652         res2 = ast_autoservice_start(chan);
1653         /* Now Stream the File */
1654         for (loopcount = 0; loopcount < 3; loopcount++) {
1655                 if (res2 && loopcount == 0) /* error in ast_autoservice_start() */
1656                         break;
1657                 if (!res2) /* on timeout, play the message again */
1658                         res2 = ast_play_and_wait(peer, "priv-callpending");
1659                 if (!valid_priv_reply(opts, res2))
1660                         res2 = 0;
1661                 /* priv-callpending script:
1662                    "I have a caller waiting, who introduces themselves as:"
1663                 */
1664                 if (!res2)
1665                         res2 = ast_play_and_wait(peer, pa->privintro);
1666                 if (!valid_priv_reply(opts, res2))
1667                         res2 = 0;
1668                 /* now get input from the called party, as to their choice */
1669                 if (!res2) {
1670                         /* XXX can we have both, or they are mutually exclusive ? */
1671                         if (ast_test_flag64(opts, OPT_PRIVACY))
1672                                 res2 = ast_play_and_wait(peer, "priv-callee-options");
1673                         if (ast_test_flag64(opts, OPT_SCREENING))
1674                                 res2 = ast_play_and_wait(peer, "screen-callee-options");
1675                 }
1676                 /*! \page DialPrivacy Dial Privacy scripts
1677                 \par priv-callee-options script:
1678                         "Dial 1 if you wish this caller to reach you directly in the future,
1679                                 and immediately connect to their incoming call
1680                          Dial 2 if you wish to send this caller to voicemail now and
1681                                 forevermore.
1682                          Dial 3 to send this caller to the torture menus, now and forevermore.
1683                          Dial 4 to send this caller to a simple "go away" menu, now and forevermore.
1684                          Dial 5 to allow this caller to come straight thru to you in the future,
1685                                 but right now, just this once, send them to voicemail."
1686                 \par screen-callee-options script:
1687                         "Dial 1 if you wish to immediately connect to the incoming call
1688                          Dial 2 if you wish to send this caller to voicemail.
1689                          Dial 3 to send this caller to the torture menus.
1690                          Dial 4 to send this caller to a simple "go away" menu.
1691                 */
1692                 if (valid_priv_reply(opts, res2))
1693                         break;
1694                 /* invalid option */
1695                 res2 = ast_play_and_wait(peer, "vm-sorry");
1696         }
1697
1698         if (ast_test_flag64(opts, OPT_MUSICBACK)) {
1699                 ast_moh_stop(chan);
1700         } else if (ast_test_flag64(opts, OPT_RINGBACK)) {
1701                 ast_indicate(chan, -1);
1702                 pa->sentringing = 0;
1703         }
1704         ast_autoservice_stop(chan);
1705         if (ast_test_flag64(opts, OPT_PRIVACY) && (res2 >= '1' && res2 <= '5')) {
1706                 /* map keypresses to various things, the index is res2 - '1' */
1707                 static const char * const _val[] = { "ALLOW", "DENY", "TORTURE", "KILL", "ALLOW" };
1708                 static const int _flag[] = { AST_PRIVACY_ALLOW, AST_PRIVACY_DENY, AST_PRIVACY_TORTURE, AST_PRIVACY_KILL, AST_PRIVACY_ALLOW};
1709                 int i = res2 - '1';
1710                 ast_verb(3, "--Set privacy database entry %s/%s to %s\n",
1711                         opt_args[OPT_ARG_PRIVACY], pa->privcid, _val[i]);
1712                 ast_privacy_set(opt_args[OPT_ARG_PRIVACY], pa->privcid, _flag[i]);
1713         }
1714         switch (res2) {
1715         case '1':
1716                 break;
1717         case '2':
1718                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1719                 break;
1720         case '3':
1721                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1722                 break;
1723         case '4':
1724                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1725                 break;
1726         case '5':
1727                 /* XXX should we set status to DENY ? */
1728                 if (ast_test_flag64(opts, OPT_PRIVACY))
1729                         break;
1730                 /* if not privacy, then 5 is the same as "default" case */
1731         default: /* bad input or -1 if failure to start autoservice */
1732                 /* well, if the user messes up, ... he had his chance... What Is The Best Thing To Do?  */
1733                 /* well, there seems basically two choices. Just patch the caller thru immediately,
1734                           or,... put 'em thru to voicemail. */
1735                 /* since the callee may have hung up, let's do the voicemail thing, no database decision */
1736                 ast_log(LOG_NOTICE, "privacy: no valid response from the callee. Sending the caller to voicemail, the callee isn't responding\n");
1737                 /* XXX should we set status to DENY ? */
1738                 /* XXX what about the privacy flags ? */
1739                 break;
1740         }
1741
1742         if (res2 == '1') { /* the only case where we actually connect */
1743                 /* if the intro is NOCALLERID, then there's no reason to leave it on disk, it'll
1744                    just clog things up, and it's not useful information, not being tied to a CID */
1745                 if (strncmp(pa->privcid, "NOCALLERID", 10) == 0 || ast_test_flag64(opts, OPT_SCREEN_NOINTRO)) {
1746                         ast_filedelete(pa->privintro, NULL);
1747                         if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1748                                 ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1749                         else
1750                                 ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1751                 }
1752                 return 0; /* the good exit path */
1753         } else {
1754                 ast_hangup(peer); /* hang up on the callee -- he didn't want to talk anyway! */
1755                 return -1;
1756         }
1757 }
1758
1759 /*! \brief returns 1 if successful, 0 or <0 if the caller should 'goto out' */
1760 static int setup_privacy_args(struct privacy_args *pa,
1761         struct ast_flags64 *opts, char *opt_args[], struct ast_channel *chan)
1762 {
1763         char callerid[60];
1764         int res;
1765         char *l;
1766
1767         if (ast_channel_caller(chan)->id.number.valid
1768                 && !ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
1769                 l = ast_strdupa(ast_channel_caller(chan)->id.number.str);
1770                 ast_shrink_phone_number(l);
1771                 if (ast_test_flag64(opts, OPT_PRIVACY) ) {
1772                         ast_verb(3, "Privacy DB is '%s', clid is '%s'\n", opt_args[OPT_ARG_PRIVACY], l);
1773                         pa->privdb_val = ast_privacy_check(opt_args[OPT_ARG_PRIVACY], l);
1774                 } else {
1775                         ast_verb(3, "Privacy Screening, clid is '%s'\n", l);
1776                         pa->privdb_val = AST_PRIVACY_UNKNOWN;
1777                 }
1778         } else {
1779                 char *tnam, *tn2;
1780
1781                 tnam = ast_strdupa(ast_channel_name(chan));
1782                 /* clean the channel name so slashes don't try to end up in disk file name */
1783                 for (tn2 = tnam; *tn2; tn2++) {
1784                         if (*tn2 == '/')  /* any other chars to be afraid of? */
1785                                 *tn2 = '=';
1786                 }
1787                 ast_verb(3, "Privacy-- callerid is empty\n");
1788
1789                 snprintf(callerid, sizeof(callerid), "NOCALLERID_%s%s", ast_channel_exten(chan), tnam);
1790                 l = callerid;
1791                 pa->privdb_val = AST_PRIVACY_UNKNOWN;
1792         }
1793
1794         ast_copy_string(pa->privcid, l, sizeof(pa->privcid));
1795
1796         if (strncmp(pa->privcid, "NOCALLERID", 10) != 0 && ast_test_flag64(opts, OPT_SCREEN_NOCALLERID)) {
1797                 /* if callerid is set and OPT_SCREEN_NOCALLERID is set also */
1798                 ast_verb(3, "CallerID set (%s); N option set; Screening should be off\n", pa->privcid);
1799                 pa->privdb_val = AST_PRIVACY_ALLOW;
1800         } else if (ast_test_flag64(opts, OPT_SCREEN_NOCALLERID) && strncmp(pa->privcid, "NOCALLERID", 10) == 0) {
1801                 ast_verb(3, "CallerID blank; N option set; Screening should happen; dbval is %d\n", pa->privdb_val);
1802         }
1803         
1804         if (pa->privdb_val == AST_PRIVACY_DENY) {
1805                 ast_verb(3, "Privacy DB reports PRIVACY_DENY for this callerid. Dial reports unavailable\n");
1806                 ast_copy_string(pa->status, "NOANSWER", sizeof(pa->status));
1807                 return 0;
1808         } else if (pa->privdb_val == AST_PRIVACY_KILL) {
1809                 ast_copy_string(pa->status, "DONTCALL", sizeof(pa->status));
1810                 return 0; /* Is this right? */
1811         } else if (pa->privdb_val == AST_PRIVACY_TORTURE) {
1812                 ast_copy_string(pa->status, "TORTURE", sizeof(pa->status));
1813                 return 0; /* is this right??? */
1814         } else if (pa->privdb_val == AST_PRIVACY_UNKNOWN) {
1815                 /* Get the user's intro, store it in priv-callerintros/$CID,
1816                    unless it is already there-- this should be done before the
1817                    call is actually dialed  */
1818
1819                 /* make sure the priv-callerintros dir actually exists */
1820                 snprintf(pa->privintro, sizeof(pa->privintro), "%s/sounds/priv-callerintros", ast_config_AST_DATA_DIR);
1821                 if ((res = ast_mkdir(pa->privintro, 0755))) {
1822                         ast_log(LOG_WARNING, "privacy: can't create directory priv-callerintros: %s\n", strerror(res));
1823                         return -1;
1824                 }
1825
1826                 snprintf(pa->privintro, sizeof(pa->privintro), "priv-callerintros/%s", pa->privcid);
1827                 if (ast_fileexists(pa->privintro, NULL, NULL ) > 0 && strncmp(pa->privcid, "NOCALLERID", 10) != 0) {
1828                         /* the DELUX version of this code would allow this caller the
1829                            option to hear and retape their previously recorded intro.
1830                         */
1831                 } else {
1832                         int duration; /* for feedback from play_and_wait */
1833                         /* the file doesn't exist yet. Let the caller submit his
1834                            vocal intro for posterity */
1835                         /* priv-recordintro script:
1836
1837                            "At the tone, please say your name:"
1838
1839                         */
1840                         int silencethreshold = ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE);
1841                         ast_answer(chan);
1842                         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 */
1843                                                                         /* don't think we'll need a lock removed, we took care of
1844                                                                            conflicts by naming the pa.privintro file */
1845                         if (res == -1) {
1846                                 /* Delete the file regardless since they hung up during recording */
1847                                 ast_filedelete(pa->privintro, NULL);
1848                                 if (ast_fileexists(pa->privintro, NULL, NULL) > 0)
1849                                         ast_log(LOG_NOTICE, "privacy: ast_filedelete didn't do its job on %s\n", pa->privintro);
1850                                 else
1851                                         ast_verb(3, "Successfully deleted %s intro file\n", pa->privintro);
1852                                 return -1;
1853                         }
1854                         if (!ast_streamfile(chan, "vm-dialout", ast_channel_language(chan)) )
1855                                 ast_waitstream(chan, "");
1856                 }
1857         }
1858         return 1; /* success */
1859 }
1860
1861 static void end_bridge_callback(void *data)
1862 {
1863         char buf[80];
1864         time_t end;
1865         struct ast_channel *chan = data;
1866
1867         if (!ast_channel_cdr(chan)) {
1868                 return;
1869         }
1870
1871         time(&end);
1872
1873         ast_channel_lock(chan);
1874         if (ast_channel_cdr(chan)->answer.tv_sec) {
1875                 snprintf(buf, sizeof(buf), "%ld", (long) end - ast_channel_cdr(chan)->answer.tv_sec);
1876                 pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", buf);
1877         }
1878
1879         if (ast_channel_cdr(chan)->start.tv_sec) {
1880                 snprintf(buf, sizeof(buf), "%ld", (long) end - ast_channel_cdr(chan)->start.tv_sec);
1881                 pbx_builtin_setvar_helper(chan, "DIALEDTIME", buf);
1882         }
1883         ast_channel_unlock(chan);
1884 }
1885
1886 static void end_bridge_callback_data_fixup(struct ast_bridge_config *bconfig, struct ast_channel *originator, struct ast_channel *terminator) {
1887         bconfig->end_bridge_callback_data = originator;
1888 }
1889
1890 static int dial_handle_playtones(struct ast_channel *chan, const char *data)
1891 {
1892         struct ast_tone_zone_sound *ts = NULL;
1893         int res;
1894         const char *str = data;
1895
1896         if (ast_strlen_zero(str)) {
1897                 ast_debug(1,"Nothing to play\n");
1898                 return -1;
1899         }
1900
1901         ts = ast_get_indication_tone(ast_channel_zone(chan), str);
1902
1903         if (ts && ts->data[0]) {
1904                 res = ast_playtones_start(chan, 0, ts->data, 0);
1905         } else {
1906                 res = -1;
1907         }
1908
1909         if (ts) {
1910                 ts = ast_tone_zone_sound_unref(ts);
1911         }
1912
1913         if (res) {
1914                 ast_log(LOG_WARNING, "Unable to start playtone \'%s\'\n", str);
1915         }
1916
1917         return res;
1918 }
1919
1920 static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)
1921 {
1922         int res = -1; /* default: error */
1923         char *rest, *cur; /* scan the list of destinations */
1924         struct chanlist *outgoing = NULL; /* list of destinations */
1925         struct ast_channel *peer;
1926         int to; /* timeout */
1927         struct cause_args num = { chan, 0, 0, 0 };
1928         int cause;
1929         char numsubst[256];
1930
1931         struct ast_bridge_config config = { { 0, } };
1932         struct timeval calldurationlimit = { 0, };
1933         char *dtmfcalled = NULL, *dtmfcalling = NULL, *dtmf_progress=NULL;
1934         struct privacy_args pa = {
1935                 .sentringing = 0,
1936                 .privdb_val = 0,
1937                 .status = "INVALIDARGS",
1938         };
1939         int sentringing = 0, moh = 0;
1940         const char *outbound_group = NULL;
1941         int result = 0;
1942         char *parse;
1943         int opermode = 0;
1944         int delprivintro = 0;
1945         AST_DECLARE_APP_ARGS(args,
1946                 AST_APP_ARG(peers);
1947                 AST_APP_ARG(timeout);
1948                 AST_APP_ARG(options);
1949                 AST_APP_ARG(url);
1950         );
1951         struct ast_flags64 opts = { 0, };
1952         char *opt_args[OPT_ARG_ARRAY_SIZE];
1953         struct ast_datastore *datastore = NULL;
1954         int fulldial = 0, num_dialed = 0;
1955         int ignore_cc = 0;
1956         char device_name[AST_CHANNEL_NAME];
1957         char forced_clid_name[AST_MAX_EXTENSION];
1958         char stored_clid_name[AST_MAX_EXTENSION];
1959         int force_forwards_only;        /*!< TRUE if force CallerID on call forward only. Legacy behaviour.*/
1960         /*!
1961          * \brief Forced CallerID party information to send.
1962          * \note This will not have any malloced strings so do not free it.
1963          */
1964         struct ast_party_id forced_clid;
1965         /*!
1966          * \brief Stored CallerID information if needed.
1967          *
1968          * \note If OPT_ORIGINAL_CLID set then this is the o option
1969          * CallerID.  Otherwise it is the dialplan extension and hint
1970          * name.
1971          *
1972          * \note This will not have any malloced strings so do not free it.
1973          */
1974         struct ast_party_id stored_clid;
1975         /*!
1976          * \brief CallerID party information to store.
1977          * \note This will not have any malloced strings so do not free it.
1978          */
1979         struct ast_party_caller caller;
1980
1981         /* Reset all DIAL variables back to blank, to prevent confusion (in case we don't reset all of them). */
1982         pbx_builtin_setvar_helper(chan, "DIALSTATUS", "");
1983         pbx_builtin_setvar_helper(chan, "DIALEDPEERNUMBER", "");
1984         pbx_builtin_setvar_helper(chan, "DIALEDPEERNAME", "");
1985         pbx_builtin_setvar_helper(chan, "ANSWEREDTIME", "");
1986         pbx_builtin_setvar_helper(chan, "DIALEDTIME", "");
1987
1988         if (ast_strlen_zero(data)) {
1989                 ast_log(LOG_WARNING, "Dial requires an argument (technology/number)\n");
1990                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
1991                 return -1;
1992         }
1993
1994         parse = ast_strdupa(data);
1995
1996         AST_STANDARD_APP_ARGS(args, parse);
1997
1998         if (!ast_strlen_zero(args.options) &&
1999                 ast_app_parse_options64(dial_exec_options, &opts, opt_args, args.options)) {
2000                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2001                 goto done;
2002         }
2003
2004         if (ast_strlen_zero(args.peers)) {
2005                 ast_log(LOG_WARNING, "Dial requires an argument (technology/number)\n");
2006                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2007                 goto done;
2008         }
2009
2010         if (ast_cc_call_init(chan, &ignore_cc)) {
2011                 goto done;
2012         }
2013
2014         if (ast_test_flag64(&opts, OPT_SCREEN_NOINTRO) && !ast_strlen_zero(opt_args[OPT_ARG_SCREEN_NOINTRO])) {
2015                 delprivintro = atoi(opt_args[OPT_ARG_SCREEN_NOINTRO]);
2016
2017                 if (delprivintro < 0 || delprivintro > 1) {
2018                         ast_log(LOG_WARNING, "Unknown argument %d specified to n option, ignoring\n", delprivintro);
2019                         delprivintro = 0;
2020                 }
2021         }
2022
2023         if (!ast_test_flag64(&opts, OPT_RINGBACK)) {
2024                 opt_args[OPT_ARG_RINGBACK] = NULL;
2025         }
2026
2027         if (ast_test_flag64(&opts, OPT_OPERMODE)) {
2028                 opermode = ast_strlen_zero(opt_args[OPT_ARG_OPERMODE]) ? 1 : atoi(opt_args[OPT_ARG_OPERMODE]);
2029                 ast_verb(3, "Setting operator services mode to %d.\n", opermode);
2030         }
2031
2032         if (ast_test_flag64(&opts, OPT_DURATION_STOP) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_STOP])) {
2033                 calldurationlimit.tv_sec = atoi(opt_args[OPT_ARG_DURATION_STOP]);
2034                 if (!calldurationlimit.tv_sec) {
2035                         ast_log(LOG_WARNING, "Dial does not accept S(%s), hanging up.\n", opt_args[OPT_ARG_DURATION_STOP]);
2036                         pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2037                         goto done;
2038                 }
2039                 ast_verb(3, "Setting call duration limit to %.3lf seconds.\n", calldurationlimit.tv_sec + calldurationlimit.tv_usec / 1000000.0);
2040         }
2041
2042         if (ast_test_flag64(&opts, OPT_SENDDTMF) && !ast_strlen_zero(opt_args[OPT_ARG_SENDDTMF])) {
2043                 dtmf_progress = opt_args[OPT_ARG_SENDDTMF];
2044                 dtmfcalled = strsep(&dtmf_progress, ":");
2045                 dtmfcalling = strsep(&dtmf_progress, ":");
2046         }
2047
2048         if (ast_test_flag64(&opts, OPT_DURATION_LIMIT) && !ast_strlen_zero(opt_args[OPT_ARG_DURATION_LIMIT])) {
2049                 if (ast_bridge_timelimit(chan, &config, opt_args[OPT_ARG_DURATION_LIMIT], &calldurationlimit))
2050                         goto done;
2051         }
2052
2053         /* Setup the forced CallerID information to send if used. */
2054         ast_party_id_init(&forced_clid);
2055         force_forwards_only = 0;
2056         if (ast_test_flag64(&opts, OPT_FORCECLID)) {
2057                 if (ast_strlen_zero(opt_args[OPT_ARG_FORCECLID])) {
2058                         ast_channel_lock(chan);
2059                         forced_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2060                         ast_channel_unlock(chan);
2061                         forced_clid_name[0] = '\0';
2062                         forced_clid.name.str = (char *) get_cid_name(forced_clid_name,
2063                                 sizeof(forced_clid_name), chan);
2064                         force_forwards_only = 1;
2065                 } else {
2066                         /* Note: The opt_args[OPT_ARG_FORCECLID] string value is altered here. */
2067                         ast_callerid_parse(opt_args[OPT_ARG_FORCECLID], &forced_clid.name.str,
2068                                 &forced_clid.number.str);
2069                 }
2070                 if (!ast_strlen_zero(forced_clid.name.str)) {
2071                         forced_clid.name.valid = 1;
2072                 }
2073                 if (!ast_strlen_zero(forced_clid.number.str)) {
2074                         forced_clid.number.valid = 1;
2075                 }
2076         }
2077         if (ast_test_flag64(&opts, OPT_FORCE_CID_TAG)
2078                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_TAG])) {
2079                 forced_clid.tag = opt_args[OPT_ARG_FORCE_CID_TAG];
2080         }
2081         forced_clid.number.presentation = AST_PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN;
2082         if (ast_test_flag64(&opts, OPT_FORCE_CID_PRES)
2083                 && !ast_strlen_zero(opt_args[OPT_ARG_FORCE_CID_PRES])) {
2084                 int pres;
2085
2086                 pres = ast_parse_caller_presentation(opt_args[OPT_ARG_FORCE_CID_PRES]);
2087                 if (0 <= pres) {
2088                         forced_clid.number.presentation = pres;
2089                 }
2090         }
2091
2092         /* Setup the stored CallerID information if needed. */
2093         ast_party_id_init(&stored_clid);
2094         if (ast_test_flag64(&opts, OPT_ORIGINAL_CLID)) {
2095                 if (ast_strlen_zero(opt_args[OPT_ARG_ORIGINAL_CLID])) {
2096                         ast_channel_lock(chan);
2097                         ast_party_id_set_init(&stored_clid, &ast_channel_caller(chan)->id);
2098                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.name.str)) {
2099                                 stored_clid.name.str = ast_strdupa(ast_channel_caller(chan)->id.name.str);
2100                         }
2101                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.number.str)) {
2102                                 stored_clid.number.str = ast_strdupa(ast_channel_caller(chan)->id.number.str);
2103                         }
2104                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.subaddress.str)) {
2105                                 stored_clid.subaddress.str = ast_strdupa(ast_channel_caller(chan)->id.subaddress.str);
2106                         }
2107                         if (!ast_strlen_zero(ast_channel_caller(chan)->id.tag)) {
2108                                 stored_clid.tag = ast_strdupa(ast_channel_caller(chan)->id.tag);
2109                         }
2110                         ast_channel_unlock(chan);
2111                 } else {
2112                         /* Note: The opt_args[OPT_ARG_ORIGINAL_CLID] string value is altered here. */
2113                         ast_callerid_parse(opt_args[OPT_ARG_ORIGINAL_CLID], &stored_clid.name.str,
2114                                 &stored_clid.number.str);
2115                         if (!ast_strlen_zero(stored_clid.name.str)) {
2116                                 stored_clid.name.valid = 1;
2117                         }
2118                         if (!ast_strlen_zero(stored_clid.number.str)) {
2119                                 stored_clid.number.valid = 1;
2120                         }
2121                 }
2122         } else {
2123                 /*
2124                  * In case the new channel has no preset CallerID number by the
2125                  * channel driver, setup the dialplan extension and hint name.
2126                  */
2127                 stored_clid_name[0] = '\0';
2128                 stored_clid.name.str = (char *) get_cid_name(stored_clid_name,
2129                         sizeof(stored_clid_name), chan);
2130                 if (ast_strlen_zero(stored_clid.name.str)) {
2131                         stored_clid.name.str = NULL;
2132                 } else {
2133                         stored_clid.name.valid = 1;
2134                 }
2135                 ast_channel_lock(chan);
2136                 stored_clid.number.str = ast_strdupa(S_OR(ast_channel_macroexten(chan), ast_channel_exten(chan)));
2137                 stored_clid.number.valid = 1;
2138                 ast_channel_unlock(chan);
2139         }
2140
2141         if (ast_test_flag64(&opts, OPT_RESETCDR) && ast_channel_cdr(chan))
2142                 ast_cdr_reset(ast_channel_cdr(chan), NULL);
2143         if (ast_test_flag64(&opts, OPT_PRIVACY) && ast_strlen_zero(opt_args[OPT_ARG_PRIVACY]))
2144                 opt_args[OPT_ARG_PRIVACY] = ast_strdupa(ast_channel_exten(chan));
2145
2146         if (ast_test_flag64(&opts, OPT_PRIVACY) || ast_test_flag64(&opts, OPT_SCREENING)) {
2147                 res = setup_privacy_args(&pa, &opts, opt_args, chan);
2148                 if (res <= 0)
2149                         goto out;
2150                 res = -1; /* reset default */
2151         }
2152
2153         if (continue_exec)
2154                 *continue_exec = 0;
2155
2156         /* If a channel group has been specified, get it for use when we create peer channels */
2157
2158         ast_channel_lock(chan);
2159         if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP_ONCE"))) {
2160                 outbound_group = ast_strdupa(outbound_group);   
2161                 pbx_builtin_setvar_helper(chan, "OUTBOUND_GROUP_ONCE", NULL);
2162         } else if ((outbound_group = pbx_builtin_getvar_helper(chan, "OUTBOUND_GROUP"))) {
2163                 outbound_group = ast_strdupa(outbound_group);
2164         }
2165         ast_channel_unlock(chan);       
2166         ast_copy_flags64(peerflags, &opts, OPT_DTMF_EXIT | OPT_GO_ON | OPT_ORIGINAL_CLID | OPT_CALLER_HANGUP | OPT_IGNORE_FORWARDING | OPT_IGNORE_CONNECTEDLINE |
2167                          OPT_CANCEL_TIMEOUT | OPT_ANNOUNCE | OPT_CALLEE_MACRO | OPT_CALLEE_GOSUB | OPT_FORCECLID);
2168
2169         /* loop through the list of dial destinations */
2170         rest = args.peers;
2171         while ((cur = strsep(&rest, "&")) ) {
2172                 struct chanlist *tmp;
2173                 struct ast_channel *tc; /* channel for this destination */
2174                 /* Get a technology/[device:]number pair */
2175                 char *number = cur;
2176                 char *interface = ast_strdupa(number);
2177                 char *tech = strsep(&number, "/");
2178                 /* find if we already dialed this interface */
2179                 struct ast_dialed_interface *di;
2180                 AST_LIST_HEAD(,ast_dialed_interface) *dialed_interfaces;
2181                 num_dialed++;
2182                 if (ast_strlen_zero(number)) {
2183                         ast_log(LOG_WARNING, "Dial argument takes format (technology/[device:]number1)\n");
2184                         goto out;
2185                 }
2186                 if (!(tmp = ast_calloc(1, sizeof(*tmp))))
2187                         goto out;
2188                 if (opts.flags) {
2189                         ast_copy_flags64(tmp, &opts,
2190                                 OPT_CANCEL_ELSEWHERE |
2191                                 OPT_CALLEE_TRANSFER | OPT_CALLER_TRANSFER |
2192                                 OPT_CALLEE_HANGUP | OPT_CALLER_HANGUP |
2193                                 OPT_CALLEE_MONITOR | OPT_CALLER_MONITOR |
2194                                 OPT_CALLEE_PARK | OPT_CALLER_PARK |
2195                                 OPT_CALLEE_MIXMONITOR | OPT_CALLER_MIXMONITOR |
2196                                 OPT_RINGBACK | OPT_MUSICBACK | OPT_FORCECLID);
2197                         ast_set2_flag64(tmp, args.url, DIAL_NOFORWARDHTML);
2198                 }
2199                 ast_copy_string(numsubst, number, sizeof(numsubst));
2200                 /* Request the peer */
2201
2202                 ast_channel_lock(chan);
2203                 datastore = ast_channel_datastore_find(chan, &dialed_interface_info, NULL);
2204                 /*
2205                  * Seed the chanlist's connected line information with previously
2206                  * acquired connected line info from the incoming channel.  The
2207                  * previously acquired connected line info could have been set
2208                  * through the CONNECTED_LINE dialplan function.
2209                  */
2210                 ast_party_connected_line_copy(&tmp->connected, ast_channel_connected(chan));
2211                 ast_channel_unlock(chan);
2212
2213                 if (datastore)
2214                         dialed_interfaces = datastore->data;
2215                 else {
2216                         if (!(datastore = ast_datastore_alloc(&dialed_interface_info, NULL))) {
2217                                 ast_log(LOG_WARNING, "Unable to create channel datastore for dialed interfaces. Aborting!\n");
2218                                 chanlist_free(tmp);
2219                                 goto out;
2220                         }
2221
2222                         datastore->inheritance = DATASTORE_INHERIT_FOREVER;
2223
2224                         if (!(dialed_interfaces = ast_calloc(1, sizeof(*dialed_interfaces)))) {
2225                                 ast_datastore_free(datastore);
2226                                 chanlist_free(tmp);
2227                                 goto out;
2228                         }
2229
2230                         datastore->data = dialed_interfaces;
2231                         AST_LIST_HEAD_INIT(dialed_interfaces);
2232
2233                         ast_channel_lock(chan);
2234                         ast_channel_datastore_add(chan, datastore);
2235                         ast_channel_unlock(chan);
2236                 }
2237
2238                 AST_LIST_LOCK(dialed_interfaces);
2239                 AST_LIST_TRAVERSE(dialed_interfaces, di, list) {
2240                         if (!strcasecmp(di->interface, interface)) {
2241                                 ast_log(LOG_WARNING, "Skipping dialing interface '%s' again since it has already been dialed\n",
2242                                         di->interface);
2243                                 break;
2244                         }
2245                 }
2246                 AST_LIST_UNLOCK(dialed_interfaces);
2247
2248                 if (di) {
2249                         fulldial++;
2250                         chanlist_free(tmp);
2251                         continue;
2252                 }
2253
2254                 /* It is always ok to dial a Local interface.  We only keep track of
2255                  * which "real" interfaces have been dialed.  The Local channel will
2256                  * inherit this list so that if it ends up dialing a real interface,
2257                  * it won't call one that has already been called. */
2258                 if (strcasecmp(tech, "Local")) {
2259                         if (!(di = ast_calloc(1, sizeof(*di) + strlen(interface)))) {
2260                                 AST_LIST_UNLOCK(dialed_interfaces);
2261                                 chanlist_free(tmp);
2262                                 goto out;
2263                         }
2264                         strcpy(di->interface, interface);
2265
2266                         AST_LIST_LOCK(dialed_interfaces);
2267                         AST_LIST_INSERT_TAIL(dialed_interfaces, di, list);
2268                         AST_LIST_UNLOCK(dialed_interfaces);
2269                 }
2270
2271                 tc = ast_request(tech, ast_channel_nativeformats(chan), chan, numsubst, &cause);
2272                 if (!tc) {
2273                         /* If we can't, just go on to the next call */
2274                         ast_log(LOG_WARNING, "Unable to create channel of type '%s' (cause %d - %s)\n",
2275                                 tech, cause, ast_cause2str(cause));
2276                         handle_cause(cause, &num);
2277                         if (!rest) /* we are on the last destination */
2278                                 ast_channel_hangupcause_set(chan, cause);
2279                         chanlist_free(tmp);
2280                         if (!ignore_cc && (cause == AST_CAUSE_BUSY || cause == AST_CAUSE_CONGESTION)) {
2281                                 if (!ast_cc_callback(chan, tech, numsubst, ast_cc_busy_interface)) {
2282                                         ast_cc_extension_monitor_add_dialstring(chan, interface, "");
2283                                 }
2284                         }
2285                         continue;
2286                 }
2287                 ast_channel_get_device_name(tc, device_name, sizeof(device_name));
2288                 if (!ignore_cc) {
2289                         ast_cc_extension_monitor_add_dialstring(chan, interface, device_name);
2290                 }
2291                 pbx_builtin_setvar_helper(tc, "DIALEDPEERNUMBER", numsubst);
2292
2293                 ast_channel_lock_both(tc, chan);
2294
2295                 /* Setup outgoing SDP to match incoming one */
2296                 if (!outgoing && !rest && CAN_EARLY_BRIDGE(peerflags, chan, tc)) {
2297                         ast_rtp_instance_early_bridge_make_compatible(tc, chan);
2298                 }
2299                 
2300                 /* Inherit specially named variables from parent channel */
2301                 ast_channel_inherit_variables(chan, tc);
2302                 ast_channel_datastore_inherit(chan, tc);
2303
2304                 ast_channel_appl_set(tc, "AppDial");
2305                 ast_channel_data_set(tc, "(Outgoing Line)");
2306                 memset(ast_channel_whentohangup(tc), 0, sizeof(*ast_channel_whentohangup(tc)));
2307
2308                 /* Determine CallerID to store in outgoing channel. */
2309                 ast_party_caller_set_init(&caller, ast_channel_caller(tc));
2310                 if (ast_test_flag64(peerflags, OPT_ORIGINAL_CLID)) {
2311                         caller.id = stored_clid;
2312                         ast_channel_set_caller_event(tc, &caller, NULL);
2313                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2314                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.number.valid,
2315                         ast_channel_caller(tc)->id.number.str, NULL))) {
2316                         /*
2317                          * The new channel has no preset CallerID number by the channel
2318                          * driver.  Use the dialplan extension and hint name.
2319                          */
2320                         caller.id = stored_clid;
2321                         if (!caller.id.name.valid
2322                                 && !ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2323                                         ast_channel_connected(chan)->id.name.str, NULL))) {
2324                                 /*
2325                                  * No hint name available.  We have a connected name supplied by
2326                                  * the dialplan we can use instead.
2327                                  */
2328                                 caller.id.name.valid = 1;
2329                                 caller.id.name = ast_channel_connected(chan)->id.name;
2330                         }
2331                         ast_channel_set_caller_event(tc, &caller, NULL);
2332                         ast_set_flag64(tmp, DIAL_CALLERID_ABSENT);
2333                 } else if (ast_strlen_zero(S_COR(ast_channel_caller(tc)->id.name.valid, ast_channel_caller(tc)->id.name.str,
2334                         NULL))) {
2335                         /* The new channel has no preset CallerID name by the channel driver. */
2336                         if (!ast_strlen_zero(S_COR(ast_channel_connected(chan)->id.name.valid,
2337                                 ast_channel_connected(chan)->id.name.str, NULL))) {
2338                                 /*
2339                                  * We have a connected name supplied by the dialplan we can
2340                                  * use instead.
2341                                  */
2342                                 caller.id.name.valid = 1;
2343                                 caller.id.name = ast_channel_connected(chan)->id.name;
2344                                 ast_channel_set_caller_event(tc, &caller, NULL);
2345                         }
2346                 }
2347
2348                 /* Determine CallerID for outgoing channel to send. */
2349                 if (ast_test_flag64(peerflags, OPT_FORCECLID) && !force_forwards_only) {
2350                         struct ast_party_connected_line connected;
2351
2352                         ast_party_connected_line_set_init(&connected, ast_channel_connected(tc));
2353                         connected.id = forced_clid;
2354                         ast_channel_set_connected_line(tc, &connected, NULL);
2355                 } else {
2356                         ast_connected_line_copy_from_caller(ast_channel_connected(tc), ast_channel_caller(chan));
2357                 }
2358
2359                 ast_party_redirecting_copy(ast_channel_redirecting(tc), ast_channel_redirecting(chan));
2360
2361                 ast_channel_dialed(tc)->transit_network_select = ast_channel_dialed(chan)->transit_network_select;
2362
2363                 if (!ast_strlen_zero(ast_channel_accountcode(chan))) {
2364                         ast_channel_accountcode_set(tc, ast_channel_accountcode(chan));
2365                 }
2366                 if (ast_strlen_zero(ast_channel_musicclass(tc))) {
2367                         ast_channel_musicclass_set(tc, ast_channel_musicclass(chan));
2368                 }
2369
2370                 /* Pass ADSI CPE and transfer capability */
2371                 ast_channel_adsicpe_set(tc, ast_channel_adsicpe(chan));
2372                 ast_channel_transfercapability_set(tc, ast_channel_transfercapability(chan));
2373
2374                 /* If we have an outbound group, set this peer channel to it */
2375                 if (outbound_group)
2376                         ast_app_group_set_channel(tc, outbound_group);
2377                 /* If the calling channel has the ANSWERED_ELSEWHERE flag set, inherit it. This is to support local channels */
2378                 if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_ANSWERED_ELSEWHERE))
2379                         ast_set_flag(ast_channel_flags(tc), AST_FLAG_ANSWERED_ELSEWHERE);
2380
2381                 /* Check if we're forced by configuration */
2382                 if (ast_test_flag64(&opts, OPT_CANCEL_ELSEWHERE))
2383                          ast_set_flag(ast_channel_flags(tc), AST_FLAG_ANSWERED_ELSEWHERE);
2384
2385
2386                 /* Inherit context and extension */
2387                 ast_channel_dialcontext_set(tc, ast_strlen_zero(ast_channel_macrocontext(chan)) ? ast_channel_context(chan) : ast_channel_macrocontext(chan));
2388                 if (!ast_strlen_zero(ast_channel_macroexten(chan)))
2389                         ast_channel_exten_set(tc, ast_channel_macroexten(chan));
2390                 else
2391                         ast_channel_exten_set(tc, ast_channel_exten(chan));
2392
2393                 ast_channel_unlock(tc);
2394                 ast_channel_unlock(chan);
2395                 res = ast_call(tc, numsubst, 0); /* Place the call, but don't wait on the answer */
2396                 ast_channel_lock(chan);
2397
2398                 /* Save the info in cdr's that we called them */
2399                 if (ast_channel_cdr(chan))
2400                         ast_cdr_setdestchan(ast_channel_cdr(chan), ast_channel_name(tc));
2401
2402                 /* check the results of ast_call */
2403                 if (res) {
2404                         /* Again, keep going even if there's an error */
2405                         ast_debug(1, "ast call on peer returned %d\n", res);
2406                         ast_verb(3, "Couldn't call %s/%s\n", tech, numsubst);
2407                         if (ast_channel_hangupcause(tc)) {
2408                                 ast_channel_hangupcause_set(chan, ast_channel_hangupcause(tc));
2409                         }
2410                         ast_channel_unlock(chan);
2411                         ast_cc_call_failed(chan, tc, interface);
2412                         ast_hangup(tc);
2413                         tc = NULL;
2414                         chanlist_free(tmp);
2415                         continue;
2416                 } else {
2417                         senddialevent(chan, tc, numsubst);
2418                         ast_verb(3, "Called %s/%s\n", tech, numsubst);
2419                         ast_channel_unlock(chan);
2420                 }
2421                 /* Put them in the list of outgoing thingies...  We're ready now.
2422                    XXX If we're forcibly removed, these outgoing calls won't get
2423                    hung up XXX */
2424                 ast_set_flag64(tmp, DIAL_STILLGOING);
2425                 tmp->chan = tc;
2426                 tmp->next = outgoing;
2427                 outgoing = tmp;
2428                 /* If this line is up, don't try anybody else */
2429                 if (ast_channel_state(outgoing->chan) == AST_STATE_UP)
2430                         break;
2431         }
2432         
2433         if (ast_strlen_zero(args.timeout)) {
2434                 to = -1;
2435         } else {
2436                 to = atoi(args.timeout);
2437                 if (to > 0)
2438                         to *= 1000;
2439                 else {
2440                         ast_log(LOG_WARNING, "Invalid timeout specified: '%s'. Setting timeout to infinite\n", args.timeout);
2441                         to = -1;
2442                 }
2443         }
2444
2445         if (!outgoing) {
2446                 strcpy(pa.status, "CHANUNAVAIL");
2447                 if (fulldial == num_dialed) {
2448                         res = -1;
2449                         goto out;
2450                 }
2451         } else {
2452                 /* Our status will at least be NOANSWER */
2453                 strcpy(pa.status, "NOANSWER");
2454                 if (ast_test_flag64(outgoing, OPT_MUSICBACK)) {
2455                         moh = 1;
2456                         if (!ast_strlen_zero(opt_args[OPT_ARG_MUSICBACK])) {
2457                                 char *original_moh = ast_strdupa(ast_channel_musicclass(chan));
2458                                 ast_channel_musicclass_set(chan, opt_args[OPT_ARG_MUSICBACK]);
2459                                 ast_moh_start(chan, opt_args[OPT_ARG_MUSICBACK], NULL);
2460                                 ast_channel_musicclass_set(chan, original_moh);
2461                         } else {
2462                                 ast_moh_start(chan, NULL, NULL);
2463                         }
2464                         ast_indicate(chan, AST_CONTROL_PROGRESS);
2465                 } else if (ast_test_flag64(outgoing, OPT_RINGBACK)) {
2466                         if (!ast_strlen_zero(opt_args[OPT_ARG_RINGBACK])) {
2467                                 if (dial_handle_playtones(chan, opt_args[OPT_ARG_RINGBACK])){
2468                                         ast_indicate(chan, AST_CONTROL_RINGING);
2469                                         sentringing++;
2470                                 } else {
2471                                         ast_indicate(chan, AST_CONTROL_PROGRESS);
2472                                 }
2473                         } else {
2474                                 ast_indicate(chan, AST_CONTROL_RINGING);
2475                                 sentringing++;
2476                         }
2477                 }
2478         }
2479
2480         peer = wait_for_answer(chan, outgoing, &to, peerflags, opt_args, &pa, &num, &result,
2481                 dtmf_progress, ignore_cc, &forced_clid, &stored_clid);
2482
2483         /* The ast_channel_datastore_remove() function could fail here if the
2484          * datastore was moved to another channel during a masquerade. If this is
2485          * the case, don't free the datastore here because later, when the channel
2486          * to which the datastore was moved hangs up, it will attempt to free this
2487          * datastore again, causing a crash
2488          */
2489         ast_channel_lock(chan);
2490         datastore = ast_channel_datastore_find(chan, &dialed_interface_info, NULL); /* make sure we weren't cleaned up already */
2491         if (datastore && !ast_channel_datastore_remove(chan, datastore)) {
2492                 ast_datastore_free(datastore);
2493         }
2494         ast_channel_unlock(chan);
2495         if (!peer) {
2496                 if (result) {
2497                         res = result;
2498                 } else if (to) { /* Musta gotten hung up */
2499                         res = -1;
2500                 } else { /* Nobody answered, next please? */
2501                         res = 0;
2502                 }
2503         } else {
2504                 const char *number;
2505
2506                 if (ast_test_flag64(&opts, OPT_CALLER_ANSWER))
2507                         ast_answer(chan);
2508
2509                 strcpy(pa.status, "ANSWER");
2510                 pbx_builtin_setvar_helper(chan, "DIALSTATUS", pa.status);
2511                 /* Ah ha!  Someone answered within the desired timeframe.  Of course after this
2512                    we will always return with -1 so that it is hung up properly after the
2513                    conversation.  */
2514                 hanguptree(outgoing, peer, 1);
2515                 outgoing = NULL;
2516                 /* If appropriate, log that we have a destination channel and set the answer time */
2517                 if (ast_channel_cdr(chan)) {
2518                         ast_cdr_setdestchan(ast_channel_cdr(chan), ast_channel_name(peer));
2519                         ast_cdr_setanswer(ast_channel_cdr(chan), ast_channel_cdr(peer)->answer);
2520                 }
2521                 if (ast_channel_name(peer))
2522                         pbx_builtin_setvar_helper(chan, "DIALEDPEERNAME", ast_channel_name(peer));
2523                 
2524                 ast_channel_lock(peer);
2525                 number = pbx_builtin_getvar_helper(peer, "DIALEDPEERNUMBER"); 
2526                 if (!number)
2527                         number = numsubst;