#!/usr/bin/perl -w
# dgit-repos-server
#
+# git protocol proxy to check dgit pushes etc.
+#
+# Copyright (C) 2014-2016 Ian Jackson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
# usages:
# dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --ssh
# dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --cron
use strict;
+use Debian::Dgit::Infra; # must precede Debian::Dgit; - can change @INC!
use Debian::Dgit qw(:DEFAULT :policyflags);
setup_sigwarn();
# FRESHREPO (4)
# blow away repo right away (ie, as if before push or fetch)
# ("check-package" and "push" only)
+# NOCOMMITCHECK (8)
+# suppress dgit-repos-server's check that commits do
+# not lack "committer" info (eg as produced by #849041)
+# ("push" only)
# any unexpected bits mean failure, and then known set bits are ignored
# if no unexpected bits set, operation continues (subject to meaning
# of any expected bits set). So, eg, exit 0 means "continue normally"
die "\ndgit-repos-server: reject: $why\n\n";
}
-sub runcmd {
- debugcmd '+',@_;
- $!=0; $?=0;
- my $r = system @_;
- die (shellquote @_)." $? $!" if $r;
-}
-
sub policyhook {
my ($policyallowbits, @polargs) = @_;
# => ($exitstatuspolicybitmap);
rmtree "${workrepo}_fresh";
}
+sub mkscript ($$) {
+ my ($path,$contents) = @_;
+ my $fh = new IO::File $path, O_WRONLY|O_CREAT|O_TRUNC, 0777
+ or die "$path: $!";
+ print $fh $contents or die "$path: $!";
+ close $fh or die "$path: $!";
+}
+
sub setupstunthook () {
my $prerecv = "$workrepo/hooks/pre-receive";
- my $fh = new IO::File $prerecv, O_WRONLY|O_CREAT|O_TRUNC, 0777
- or die "$prerecv: $!";
- print $fh <<END or die "$prerecv: $!";
+ mkscript $prerecv, <<END;
#!/bin/sh
set -e
exec $0 --pre-receive-hook $package
END
- close $fh or die "$prerecv: $!";
$ENV{'DGIT_DRS_WORK'}= $workrepo;
$ENV{'DGIT_DRS_DEST'}= $destrepo;
printdebug " stunt hook set up $prerecv\n";
STDIN->error and die $!;
reject "push is missing tag ref update" unless %tags;
- my @newtags = grep { m#^archive/# } keys %tags;
- my @omtags = grep { !m#^archive/# } keys %tags;
- reject "pushing too many similar tags" if @newtags>1 || @omtags>1;
- if (@newtags) {
- ($tagname) = @newtags;
- ($maint_tagname) = @omtags;
- } else {
- ($tagname) = @omtags or die;
- }
+ my @dtags = grep { m#^archive/# } keys %tags;
+ reject "need exactly one archive/* tag" if @dtags!=1;
+ my @mtags = grep { !m#^archive/# } keys %tags;
+ reject "pushing too many non-dgit tags" if @mtags>1;
+ ($tagname) = @dtags;
+ ($maint_tagname) = @mtags;
$tagval = $tags{$tagname};
$maint_tagval = $tags{$maint_tagname // ''};
grep { $tagname eq $_ } @expecttagnames or die;
foreach my $othertag (grep { $_ ne $tagname } @expecttagnames) {
- reject "tag $othertag (pushed with differing dgit version)".
- " already exists -".
+ reject "tag $othertag already exists -".
" not replacing previously-pushed version"
if git_get_ref "refs/tags/".$othertag;
}
@policy_args = ($package,$version,$suite,$tagname,
join(",",@deliberatelies));
- $policy = policyhook(NOFFCHECK|FRESHREPO, 'push', @policy_args);
+ $policy = policyhook(NOFFCHECK|FRESHREPO|NOCOMMITCHECK, 'push', @policy_args);
if (defined $tagexists_error) {
if ($policy & FRESHREPO) {
chomp $mb;
$mb eq $oldcommit or reject "not fast forward on dgit branch";
}
+
+ # defend against commits generated by #849041
+ if (!($policy & NOCOMMITCHECK)) {
+ my @checks = qw(%at
+ %ct);
+ my @chk = qw(git log -z);
+ push @chk, '--pretty=tformat:%H%n'.
+ (join "", map { $_, '%n' } @checks);
+ push @chk, "^$oldcommit" if $oldcommit =~ m/[^0]/;
+ push @chk, $commit;;
+ printdebug " ~NOCOMMITCHECK @chk\n";
+ open CHK, "-|", @chk or die $!;
+ local $/ = "\0";
+ while (<CHK>) {
+ next unless m/^$/m;
+ m/^\w+(?=\n)/ or die;
+ reject "corrupted object $& (missing metadata)";
+ }
+ $!=0; $?=0; close CHK or $?==256 or die "$? $!";
+ }
+
if ($policy & FRESHREPO) {
# It's a bit late to be discovering this here, isn't it ?
#
my @cmdbase = (qw(git send-pack), $destrepo);
push @cmdbase, qw(--force) if $policy & NOFFCHECK;
+ if ($ENV{GIT_QUARANTINE_PATH}) {
+ my $recv_wrapper = "$ENV{GIT_QUARANTINE_PATH}/dgit-recv-wrapper";
+ mkscript $recv_wrapper, <<'END';
+#!/bin/sh
+set -e
+unset GIT_QUARANTINE_PATH
+exec git receive-pack "$@"
+END
+ push @cmdbase, "--receive-pack=$recv_wrapper";
+ }
+
my @cmd = @cmdbase;
push @cmd, "$commit:refs/dgit/$suite",
"$tagval:refs/tags/$tagname";
~ianmdlvl / dgit.git / blobdiff