# dgit-repos-server
#
# usages:
-# .../dgit-repos-server DISTRO SUITES KEYRING-AUTH-SPEC DGIT-REPOS-DIR --ssh
+# .../dgit-repos-server DISTRO SUITES KEYRING-AUTH-SPEC \
+# DGIT-REPOS-DIR POLICY-HOOK-SCRIPT --ssh
# internal usage:
# .../dgit-repos-server --pre-receive-hook PACKAGE
#
use Fcntl qw(:flock);
use File::Path qw(rmtree);
-open DEBUG, ">/dev/null" or die $!;
+use Debian::Dgit qw(:DEFAULT :policyflags);
-our $package_re = '[0-9a-z][-+.0-9a-z]+';
+open DEBUG, ">/dev/null" or die $!;
our $func;
our $dgitrepos;
our $package;
our $suitesfile;
+our $policyhook;
our $realdestrepo;
our $destrepo;
our $workrepo;
our $keyrings;
our @lockfhs;
our $debug='';
+our @deliberatelies;
+our $policy;
#----- utilities -----
die "@_ $? $!" if $r;
}
+sub policyhook {
+ my ($policyallowbits, @polargs) = @_;
+ # => ($exitstatuspolicybitmap, $policylockfh);
+ die if $policyallowbits & ~0x3e;
+ my @cmd = ($policyhook,$distro,$repos,@polargs);
+ debugcmd @_;
+ my $r = system @_;
+ die "system: $!" if $r < 0;
+ die "hook (@cmd) failed ($?)" if $r & ~($policyallowbits << 8);
+ return $r >> 8;
+}
+
+sub mkemptyrepo ($$) {
+ my ($dir,$sharedperm) = @_;
+ runcmd qw(git init --bare --quiet), "--shared=$sharedperm", $dir;
+}
+
+sub mkrepo_fromtemplate ($) {
+ my ($dir) = @_;
+ my $template = "$dgitrepos/_template";
+ debug "copy tempalate $template -> $dir";
+ my $r = system qw(cp -a --), $template, $dir;
+ !$r or die "create new repo $dir failed: $r $!";
+}
+
+sub movetogarbage () {
+ my $garbagerepo = "$dgitrepos/_tmp/${package}_garbage";
+ acquiretree($garbagerepo,1);
+ rmtree $garbagerepo;
+ rename $realdestrepo, $garbagerepo
+ or $! == ENOENT
+ or die "rename repo $realdestrepo to $garbagerepo: $!";
+}
+
+sub onwardpush () {
+ my @cmd = (qw(git send-pack), $destrepo);
+ push @cmd, qw(--force) if $policy & NOFFCHECK;
+ push @cmd, "$commit:refs/dgit/$suite",
+ "$tagval:refs/tags/$tagname");
+ debugcmd @cmd;
+ $!=0;
+ my $r = system @cmd;
+ !$r or die "onward push to $destrepo failed: $r $!";
+}
+
#----- git-receive-pack -----
sub fixmissing__git_receive_pack () {
mkrepotmp();
$destrepo = "$dgitrepos/_tmp/${package}_prospective";
acquiretree($destrepo, 1);
- my $template = "$dgitrepos/_template";
- debug "fixmissing copy tempalate $template -> $destrepo";
- my $r = system qw(cp -a --), $template, $destrepo;
- !$r or die "create new repo failed failed: $r $!";
+ mkrepo_fromtemplate($destrepo);
}
sub makeworkingclone () {
for (;;) {
if (s/^distro\=(\S+) //) {
die "$1 != $distro" unless $1 eq $distro;
- } elsif (s/^[-+.=0-9a-z]+ //) {
+ } elsif (s/^(--deliberately-$package_re) //) {
+ push @deliberatelies, $1;
+ } elsif (s/^[-+.=0-9a-z]\S* //) {
} else {
die "unknown dgit info in tag";
}
sub checks () {
debug "checks";
- checksuite();
+
tagh1('type') eq 'commit' or reject "tag refers to wrong kind of object";
tagh1('object') eq $commit or reject "tag refers to wrong commit";
tagh1('tag') eq $tagname or reject "tag name in tag is wrong";
debug "translated version $v";
$tagname eq "debian/$v" or die;
+ $policy = policyhook(NOFFCHECK|FRESHREPO, 'push',$package,
+ $version,$suite,$tagname,
+ join(",",@delberatelies));
+
+ checksuite();
+
# check that our ref is being fast-forwarded
debug "oldcommit $oldcommit";
- if ($oldcommit =~ m/[^0]/) {
+ if (!($policy & NOFFCHECK) && $oldcommit =~ m/[^0]/) {
$?=0; $!=0; my $mb = `git merge-base $commit $oldcommit`;
chomp $mb;
$mb eq $oldcommit or reject "not fast forward on dgit branch";
}
}
-sub onwardpush () {
- my @cmd = (qw(git send-pack), $destrepo,
- "$commit:refs/dgit/$suite",
- "$tagval:refs/tags/$tagname");
- debugcmd @cmd;
- $!=0;
- my $r = system @cmd;
- !$r or die "onward push failed: $r $!";
-}
-
sub stunthook () {
debug "stunthook";
chdir $workrepo or die "chdir $workrepo: $!";
return if stat $destrepo;
die $! unless $!==ENOENT;
rmtree "$destrepo.new";
- umask 022;
- runcmd qw(git init --bare --quiet), "$destrepo.new";
+ mkemptyrepo "$destrepo.new", "0644";
rename "$destrepo.new", $destrepo or die $!;
unlink "$destrepo.lock" or die $!;
close $lfh;
defined($workrepo = $ENV{'DGIT_DRS_WORK'}) or die;
defined($destrepo = $ENV{'DGIT_DRS_DEST'}) or die;
defined($keyrings = $ENV{'DGIT_DRS_KEYRINGS'}) or die $!;
+ defined($policyhook = $ENV{'DGIT_DRS_POLICYHOOK'}) or die $!;
open STDOUT, ">&STDERR" or die $!;
eval {
stunthook();
$ENV{'DGIT_DRS_SUITES'} = argval();
$ENV{'DGIT_DRS_KEYRINGS'} = argval();
$dgitrepos = argval();
+ $ENV{'DGIT_DRS_POLICYHOOK'} = $policyhook = argval();
die unless @ARGV==1 && $ARGV[0] eq '--ssh';
reject "unknown method" unless $mainfunc;
+ my ($policy, $pollock) = policyhook(FRESHREPO,'check-package',$package);
+ if ($policy & FRESHREPO) {
+ movetogarbage;
+ }
+ close $pollock or die $!;
+
if (stat $realdestrepo) {
$destrepo = $realdestrepo;
} else {