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Re: what do I hash to get .subversion/auth/svn.simple file name?

From: Tristan Slominski <tristan.slominski_at_gmail.com>
Date: Mon, 6 Jan 2014 14:11:18 -0600

My poor use of command line was at fault when diagnosing this issue. I did
not use -n option when invoking echo.

Thank you very much!

On Mon, Jan 6, 2014 at 2:03 PM, Stefan Sperling <stsp_at_elego.de> wrote:

> On Mon, Jan 06, 2014 at 01:40:58PM -0600, Tristan Slominski wrote:
> > Hi,
> >
> > I thought this was going to be easy to find out, but after hours
> > researching this and trying different things, I still don't know how to
> > answer the question.
> >
> > I posted it on stack overflow here:
> >
> http://stackoverflow.com/questions/20952004/subversion-auth-svn-simple-hash-algorithm
> >
> > It boils down to this:
> >
> > Given ~/.subversion/auth/svn.simple/5671adf2865e267db74f09ba6f872c28 with
> > the contents of:
> >
> > K 8
> > username
> > V 3
> > joe
> > K 8
> > password
> > V 4
> > blah
> > K 15
> > svn:realmstring
> > V 45
> > <https://svn.domain.com:443> Joe's repository
> > END
> >
> > What string to I hash to get 5671adf2865e267db74f09ba6f872c28?
>
> The creds file's name is indeed the MD5 checksum of the realmstring.
> This code generates the name (in subversion/libsvn_subr/config_auth.c):
>
> /* Construct the basename of the creds file. It's just the
> realmstring converted into an md5 hex string. */
> SVN_ERR(svn_checksum(&checksum, svn_checksum_md5, realmstring,
> strlen(realmstring), pool));
> hexname = svn_checksum_to_cstring(checksum, pool);
>
> *path = svn_dirent_join(authdir_path, hexname, pool);
>
> > https://svn.domain.com:443> Joe's repository"), and I can't find one
> that
> > generates the correct hash.
>
> I'm not sure why your example doesn't work, but with a data set
> of mine I get the right hash:
>
> $ cd ~/.subversion/auth/svn.simple
> $ echo -n "<https://svn.apache.org:443> ASF Committers:443> ASF
> Committers" | md5
> d3c8a345b14f6a1b42251aef8027ab57
> $ grep ASF ./d3c8a345b14f6a1b42251aef8027ab57
> <https://svn.apache.org:443> ASF Committers
> $
>
Received on 2014-01-06 21:11:51 CET

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