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bug: mirror WebDAV munging checkins containing "/SVN"

From: Shane Beasley <shane.beasley_at_aleri.com>
Date: Fri, 19 Jun 2009 16:07:33 -0700

We're using the CollabNet 1.6.1 suite Apache/WebDAV on two servers in a
master/mirror setup. Recently, one of us tried to commit to the mirror a
file that contained the string "/SVN". The master replied with an "svn:
Checksum mismatch, file..." error -- apparently the file was mangled en

Using Wireshark, we found that the mirror was rewriting the string
"/SVN" to the string "/svn" inside the file being committed (!!!),
thereby perturbing the checksum.

Initial research points to dav_svn__location_body_filter:


It seems to be doing a case-insensitive search-and-replace from
"remotepath" -- the path component of the master server URI ("/svn" in
our case) -- to "localpath" -- apparently the root of the repository as
the mirror knows it (also "/svn" in our case). I suspect that it's doing
this search-and-replace against the file we're committing, in which case
presumably it shouldn't be doing that -- although I'm not sure what it's
supposed to be doing instead.

I suspect that our particular case can be fixed by removing the
case-sensitivity check, but that's obviously a hack. :) Any better ideas?



Received on 2009-06-20 01:27:15 CEST

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