[asterisk-dev] [Code Review] 4336: app_dial: Don't publish DialEnd events twice if GOSUB_RESULT or MACRO_RESULT return an unexpected value

[rmudgett]

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/branches/13/apps/app_dial.c
<https://reviewboard.asterisk.org/r/4336/#comment24648>

    Probably should set res9 and res on the gosub result conditions above then check res9 here since res may not be zero on entering the enclosing code block.


- rmudgett


On Jan. 14, 2015, 12:07 p.m., Matt Jordan wrote:
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> https://reviewboard.asterisk.org/r/4336/
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> (Updated Jan. 14, 2015, 12:07 p.m.)
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> Review request for Asterisk Developers.
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> Bugs: ASTERISK-24682
>     https://issues.asterisk.org/jira/browse/ASTERISK-24682
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> Repository: Asterisk
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> Description
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> The Dial application has some interesting options with the mid-call Macro (M) and GoSub (U) options. If the MACRO_RESULT/GOSUB_RESULT returns specific values, the Dial application will take some action upon the channels involved in the dial operation (such as hanging up a particular party, etc.) The Dial application ensures that a Stasis message is published in the event that MACRO_RESULT/GOSUB_RESULT returns a value that kills the dial operation, so that there is a corresponding DialEnd event published in AMI/ARI for the DialBegin event that preceeded it.
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> A bug exists where that same DialEnd event will be published on Stasis even if the value returned in MACRO_RESULT/GOSUB_RESULT is not one that the Dial application cares about. This causes two DialEnd events to be published - one with the MACRO_RESULT/GOSUB_RESULT and another with "ANSWERED" - which is all sorts of wrong.
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> This patch fixes the bug by ensuring that we only publish a DialEnd message to Stasis if the Dial application's mid-call Macro/GoSub returns something that Dial cares about.
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> Diffs
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>   /branches/13/apps/app_dial.c 430607 
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> Diff: https://reviewboard.asterisk.org/r/4336/diff/
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> Testing
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> See https://reviewboard.asterisk.org/r/4337 for tests.
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> Thanks,
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> Matt Jordan
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