X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=infra%2Fdgit-repos-server;h=a8b9400b5a4729a2c92e0c86d318385dd1512c6c;hp=1be33609d486578b69a3fdeb2edd7b831b5c9c02;hb=cb5a33d8508c3b83a2bb776e567d8cd2d1a6e50d;hpb=02bc0d2ca13bda7484c72b30cd20a7e36097da34

diff --git a/infra/dgit-repos-server b/infra/dgit-repos-server
index 1be33609..a8b9400b 100755
--- a/infra/dgit-repos-server
+++ b/infra/dgit-repos-server
@@ -160,6 +160,10 @@ 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"
@@ -299,13 +303,6 @@ sub reject ($) {
     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) = @_;
     # => ($exitstatuspolicybitmap);
@@ -403,16 +400,21 @@ sub makeworkingclone () {
     rmtree "${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";
@@ -870,7 +872,7 @@ sub checks () {
 
     @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) {
@@ -890,6 +892,27 @@ sub checks () {
 	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 ?
 	#
@@ -913,6 +936,17 @@ sub onwardpush () {
     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";