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epan_base64_decode(): failure when string contains a NUL character
From: Uli Heilmeier <zeugs () heilmeier eu>
Date: Wed, 17 Apr 2013 22:27:42 +0200
I'm currently trying to improve the SMTP dissector regarding the AUTH command.
Up to now I finished the 'AUTH LOGIN' mechanism (s. Bug 8591). Next I
would like to decode the 'AUTH PLAIN' mechanism (RFC 4616).
With the PLAIN mechanism the packet has a base64 encoded string containing:
[authorization user](\x00)[authentication user](\x00)[password]
dGVzdAB0ZXN0ADEyMzQ= contains test(NUL)test(NUL)1234
I tried to decode the base64 string with the epan_base64_decode() function
(from epan/base64.h). Unfortunately this fails. I only get a wrong three
bytes long string.
I guess the problem is the NUL character as a delimiter.
Do you have an idea if this is bug in the epan_base64_decode() function or
do I have to do the decoding another way?
Thanks a lot!
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- epan_base64_decode(): failure when string contains a NUL character Uli Heilmeier (Apr 17)