[asterisk-bugs] [Asterisk 0017089]: Background behaves strangely[t when priority 1 is not available in current extension.

[Asterisk Bug Tracker]

The following issue has been UPDATED. 
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https://issues.asterisk.org/view.php?id=17089 
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Reported By:                whardier
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17089
Category:                   Core/PBX
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     closed
Asterisk Version:           1.6.2.6 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 no change required
Fixed in Version:           
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Date Submitted:             2010-03-23 22:20 CDT
Last Modified:              2010-03-24 08:55 CDT
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Summary:                    Background behaves strangely[t when priority 1 is
not available in current extension.
Description: 
Apparently whatever extension lookup method is being used by BackGround
fails when the extension calling BackGround does not have priority 1 in the
current context.  I discovered this when including an IVR menu into another
context using a 50000 offset to extension 's' and a named priority.  See
additional information for a quick sample.

In the example below, if a caller is sent to Goto(tree-dish-AK-ANC,s,1)
the extension detection fails with:

[Mar 23 19:17:41]     -- Sent into invalid extension 's' in context
'tree-dish-common' on SIP/0011-Sales-0000001c
[Mar 23 19:17:41]     -- Executing [i at tree-dish-common:1]
Gosub("SIP/0011-Sales-0000001c", "s,common") in new stack

If I attempt to dial a 4 digit extension starting with 0 when a '0'
extension exists.  Something is 'wonky' if I can get technical with you
all.

Previously [tree-dish-AK-ANC] included [tree-dish-common] and simply went
to the named priority at priority 50000 via a local Goto which may have
worked.. untested.  

I can see how some users may want to jump into a named priority in another
context and use DTMF detection of some kind.  If the extension does not
have priority 1 this will fail.
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 (0119796) lmadsen (administrator) - 2010-03-24 08:55
 https://issues.asterisk.org/view.php?id=17089#c119796 
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This is not a bug in Asterisk, but rather a bug in your dialplan:

[tree-dish-AK-ANC]
 exten => s,1,Set(locale=AK-ANC)
; exten => s,n,Goto(tree-dish-common,menu,1)
 exten => s,n,Goto(tree-dish-common,s,makeitso)
 exten => _.,1,Set(locale=AK-ANC)
 exten => _.,n,Goto(tree-dish-common,${EXTEN},1)


In this case, if you do Goto(tree-dish-AK-ANC,s,1) your pattern match of
_. will match the 's' extension, which then does the
Goto(tree-dish-common,s,1) which of course doesn't exist because you don't
have s,1 in [tree-dish-common].

Don't use the _. pattern match, and then you won't have the problem. The
_. pattern match takes precedent over everything. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-03-24 08:55 lmadsen        Note Added: 0119796                          
2010-03-24 08:55 lmadsen        Status                   new => closed       
2010-03-24 08:55 lmadsen        Resolution               open => no change
required
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