[asterisk-bugs] [Asterisk 0015655]: [patch] Dialplan starts execution before call is accepted

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=15655 
====================================================================== 
Reported By:                alecdavis
Assigned To:                rmudgett
====================================================================== 
Project:                    Asterisk
Issue ID:                   15655
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     assigned
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 210436 
Request Review:              
====================================================================== 
Date Submitted:             2009-08-04 18:40 CDT
Last Modified:              2009-08-05 14:40 CDT
====================================================================== 
Summary:                    [patch] Dialplan starts execution before call is
accepted
Description: 
example dialplan code that is repeatable.

exten => 8696,1,Congestion(0)

<b>Correct</b> console output:
 Unknown IE 50 (cs5, Unknown Information Element)
    -- Accepting call from 'XXXX205' to '8696' on channel 0/31, span 1
    -- Executing [8696 at incoming:1] Congestion("DAHDI/31-1", "0") in new
stack
  == Spawn extension (incoming, 8696, 1) exited non-zero on 'DAHDI/31-1'
    -- Hungup 'DAHDI/31-1'

<b>Incorrect</b> console output:

!! Unknown IE 50 (cs5, Unknown Information Element)
    -- Executing [8696 at incoming:1] Congestion("DAHDI/31-1", "0") in new
stack
  == Spawn extension (incoming, 8696, 1) exited non-zero on 'DAHDI/31-1'
    -- Hungup 'DAHDI/31-1'
    -- Accepting call from 'XXXXX205' to '' on channel 0/31, span 1

No further calls can be made into asterisk.
Shortly after. Asterisk will segfault.

====================================================================== 

---------------------------------------------------------------------- 
 (0108683) svnbot (reporter) - 2009-08-05 14:40
 https://issues.asterisk.org/view.php?id=15655#c108683 
---------------------------------------------------------------------- 
Repository: asterisk
Revision: 210640

_U  trunk/
U   trunk/channels/sig_pri.c

------------------------------------------------------------------------
r210640 | rmudgett | 2009-08-05 14:40:20 -0500 (Wed, 05 Aug 2009) | 21
lines

Merged revisions 210575 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r210575 | rmudgett | 2009-08-05 14:18:56 -0500 (Wed, 05 Aug 2009) | 14
lines
  
  Dialplan starts execution before the channel setup is complete.
  
  *  Issue 15655: For the case where dialing is complete for an incoming
  call, dahdi_new() was asked to start the PBX and then the code set more
  channel variables.  If the dialplan hungup before these channel
variables
  got set, asterisk would likely crash.
  *  Fixed potential for overlap incoming call to erroneously set channel
  variables as global dialplan variables if the ast_channel structure
failed
  to get allocated.
  *  Added missing set of CALLINGSUBADDR in the dialing is complete case.
  
  (closes issue https://issues.asterisk.org/view.php?id=15655)
  Reported by: alecdavis
........

------------------------------------------------------------------------

http://svn.digium.com/view/asterisk?view=rev&revision=210640 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-08-05 14:40 svnbot         Checkin                                      
2009-08-05 14:40 svnbot         Note Added: 0108683                          
======================================================================