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Summary:ASTERISK-04714: GROUP_COUNT crashes if category specified and group is empty
Reporter:Mark Monnin (wrmem)Labels:
Date Opened:2005-07-27 17:31:59Date Closed:2008-01-15 15:43:03.000-0600
Priority:MinorRegression?No
Status:Closed/CompleteComponents:Core/General
Versions:Frequency of
Occurrence
Related
Issues:
Environment:Attachments:( 0) groupcount_patch.txt
Description:If GROUP_COUNT is called with a category but an empty group such as "GROUP_COUNT(@foo)", it can cause Asterisk to crash.

Trival fix is to protect against a NULL result from pbx_builtin_getvar_helper.  Patch attached.


****** ADDITIONAL INFORMATION ******

Sample "bad" config is given below:

exten => 37738,1,SayDigits(${GROUP_COUNT(@foo)})
exten => 37738,n,Wait(60)
exten => 37738,n,Playback(vm-goodbye)
exten => 37738,n,Hangup

(Ya, I know - still need to send in a disclaimer, but this should be trivial enough anyways)
Comments:By: Russell Bryant (russell) 2005-07-27 18:37:58

Since you didn't have a disclaimer, I just wrote a patch without looking at yours.  Thanks for the report!

By: Digium Subversion (svnbot) 2008-01-15 15:43:03.000-0600

Repository: asterisk
Revision: 6237

U   trunk/funcs/func_groupcount.c

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r6237 | russell | 2008-01-15 15:43:02 -0600 (Tue, 15 Jan 2008) | 2 lines

don't crash if no group is specified (bug ASTERISK-4714)

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http://svn.digium.com/view/asterisk?view=rev&revision=6237