[asterisk-dev] [Code Review] Allow inheritance of CHANNEL() write changes for Local/n queue members

[Terry Wilson]

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https://reviewboard.asterisk.org/r/903/
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Review request for Asterisk Developers.


Summary
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Having Local (/n) channels as queue members and setting the language in the extension with Set(CHANNEL(language)=fr) sets the language on the Local/...,2 channel. Hold time report playbacks happen on the Local/...,1 channel and therefor do not play in the specified language.

This patch adds a channel callback function get_other_side() (I am totally open to another name for this) that given one side of a local channel, will pass back the other side. This is used in the func_channel_write function to apply any changes to both sides of the local channel.

There are other places in the code where we specifically check for a local channel and look up the other side of the channel via relying on the names of the channels being similar and doing an ast_get_channel_by_name_locked(), but that is just exceedingly gross. We can't use the get_base_channel() callback because that could have some unintended consequences during a masquerade.

I propose that we make this change in all supported release versions, despite it being an API change, since there really is no other way for a local (/n) channel in a queue to set the desired language without *some* kind of fix--and this is the least hacky way I could come up with.


This addresses bug 17673.
    https://issues.asterisk.org/view.php?id=17673


Diffs
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  /branches/1.4/channels/chan_local.c 284782 
  /branches/1.4/funcs/func_channel.c 284782 
  /branches/1.4/include/asterisk/channel.h 284782 

Diff: https://reviewboard.asterisk.org/r/903/diff


Testing
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;queues.conf
[test]
strategy=ringall
member => Local/s at queuetest/n
reportholdtime=yes

;extensions.conf
[sip]
exten => 123,1,Queue(test)

[queuetest]
exten => s,1,Set(CHANNEL(language)=fr)
exten => s,n,Dial(SIP/6004)

The hold time notification played in french.


Thanks,

Terry