85 lines
2.5 KiB
Perl
Executable file
85 lines
2.5 KiB
Perl
Executable file
#!/usr/bin/perl -w
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use strict;
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# === update ===
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# this is gitosis-lite's update hook
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# part of the gitosis-lite (GL) suite
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# how run: via git, being copied as .git/hooks/update in every repo
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# when: every push
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# input:
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# - see man githooks for STDIN
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# - uses the compiled config file to get permissions info
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# output: based on permissions etc., exit 0 or 1
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# security:
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# - none
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# robustness:
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# other notes:
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# ----------------------------------------------------------------------------
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# common definitions
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# ----------------------------------------------------------------------------
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our $GL_ADMINDIR;
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our $GL_CONF;
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our $GL_KEYDIR;
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our $GL_CONF_COMPILED;
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our $REPO_BASE;
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our %repos;
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my $glrc = $ENV{HOME} . "/.gitosis-lite.rc";
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unless (my $ret = do $glrc)
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{
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die "parse $glrc failed: $@" if $@;
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die "couldn't do $glrc: $!" unless defined $ret;
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die "couldn't run $glrc" unless $ret;
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}
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die "couldnt do perms file" unless (my $ret = do $GL_CONF_COMPILED);
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# ----------------------------------------------------------------------------
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# start...
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# ----------------------------------------------------------------------------
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my $ref = shift;
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my $oldsha = shift;
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my $newsha = shift;
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my $merge_base = '0' x 40;
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# compute a merge-base if both SHAs are non-0, else leave it as '0'x40
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# (i.e., for branch create or delete, merge_base == '0'x40)
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chomp($merge_base = `git merge-base $oldsha $newsha`)
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unless $oldsha eq '0' x 40
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or $newsha eq '0' x 40;
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# some of this is from an example hook in Documentation/howto of git.git, with
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# some variations
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# what are you trying to do? (is it 'W' or '+'?)
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my $perm = 'W';
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# rewriting a tag is considered a rewind, in terms of permissions
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$perm = '+' if $ref =~ m(refs/tags/) and $oldsha ne ('0' x 40);
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# non-ff push to branch. Notice that branch delete looks like a rewind, as it
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# should
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$perm = '+' if $ref =~ m(refs/heads/) and $oldsha ne $merge_base;
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my $allowed_refs = $repos{$ENV{GL_REPO}}{$perm}{$ENV{GL_USER}};
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for my $refex (@$allowed_refs)
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# refex? sure -- a regex to match a ref against :)
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{
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if ($ref =~ /$refex/)
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{
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# if log failure isn't important enough to block pushes, get rid of
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# all the error checking
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open my $log_fh, ">>", "$GL_ADMINDIR/log"
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or die "open log failed: $!";
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print $log_fh "$perm: $ENV{GL_USER} $ENV{GL_REPO} $ref $oldsha $newsha\n";
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close $log_fh or die "close log failed: $!";
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exit 0;
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}
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}
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exit 1;
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