46 lines
1.6 KiB
Bash
Executable file
46 lines
1.6 KiB
Bash
Executable file
#!/bin/bash
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# gitolite VREF to detect duplicate public keys
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# see gitolite doc/vref.mkd for what the arguments are
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sha=$3
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# git sets this; and we don't want it at this point...
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unset GIT_DIR
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# paranoia
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set -e
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# setup the temp area
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export TMPDIR=$GL_REPO_BASE_ABS
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export tmp=$(mktemp -d -t gl-internal-temp-repo.XXXXXXXXXX);
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trap "rm -rf $tmp" EXIT;
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git archive $sha keydir | tar -C $tmp -xf -
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# DO NOT try, say, 'GIT_WORK_TREE=$tmp git checkout $sha'. It'll screw up
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# both the 'index' and 'HEAD' of the repo.git. Screwing up the index is
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# BAD because now it goes out of sync with $GL_ADMINDIR. Think of a push
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# that had a deleted pubkey but failed a hooklet for some reason. A
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# subsequent push that fixes the error will now result in a $GL_ADMINDIR
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# that still *has* that deleted pubkey!!
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# And this is equally applicable to cases where you're using a
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# post-receive or similar hook to live update a web site or something,
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# which is a pretty common usage, I am given to understand.
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cd $tmp
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for f in `find keydir -name "*.pub"`
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do
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ssh-keygen -l -f "$f"
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done | perl -ane '
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die "FATAL: $F[2] is a duplicate of $seen{$F[1]}\n" if $seen{$F[1]};
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$seen{$F[1]} = $F[2];
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'
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# as you can see, a vref can also 'die' if it wishes to, and it'll take the
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# whole update with it if it does. No messing around with sending back a
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# vref, having it run through the matches, and printing the DENIED message,
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# etc. However, if your push is running from a script, and that script is
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# looking for the word "DENIED" or something, then this won't work...
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