Merged revisions 217807 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

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  r217807 | dvossel | 2009-09-10 16:07:47 -0500 (Thu, 10 Sep 2009) | 28 lines
  
  Merged revisions 217806 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
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    r217806 | dvossel | 2009-09-10 16:06:07 -0500 (Thu, 10 Sep 2009) | 22 lines
    
    IAX2 encryption regression
    
    The IAX2 Call Token security patch inadvertently broke the use of
    encryption due to the reorganization of code in the socket_process()
    function.  When encryption is used, an incoming full frame must first
    be decrypted before the information elements can be parsed.  The
    security release mistakenly moved IE parsing before decryption in
    order to process the new Call Token IE.  To resolve this, decryption
    of full frames is once again done before looking into the frame.  This
    involves searching for an existing callno, checking the pvt to see if
    encryption is turned on, and decrypting the packet before the internal
    fields of the full frame are accessed.
    
    (closes issue #15834)
    Reported by: karesmakro
    Patches:
          iax2_encryption_fix_1.4.diff uploaded by dvossel (license 671)
    Tested by: dvossel, karesmakro
    
    Review: https://reviewboard.asterisk.org/r/355/
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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.2@217821 f38db490-d61c-443f-a65b-d21fe96a405b

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