X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=infra%2Fdgit-repos-policy-debian;h=e37690c0b495791cdc2adac29cc6b3e87dc950ce;hp=0774f17b9e373947e0dfbd9309ebc6c683acf47a;hb=8a178bf100d49ad948f5f3ec5540da1ff9c74c3e;hpb=b02532fd7d3c82864c76eecbfd99a1abc7e2c1b2

diff --git a/infra/dgit-repos-policy-debian b/infra/dgit-repos-policy-debian
index 0774f17b..e37690c0 100755
--- a/infra/dgit-repos-policy-debian
+++ b/infra/dgit-repos-policy-debian
@@ -2,7 +2,9 @@
 # dgit repos policy hook script for Debian
 
 use strict;
-$SIG{__WARN__} = sub { die $_[0]; };
+
+use Debian::Dgit qw(:DEFAULT :policyflags);
+setup_sigwarn();
 
 use POSIX;
 use JSON;
@@ -11,7 +13,6 @@ use DBI;
 use IPC::Open2;
 use Data::Dumper;
 
-use Debian::Dgit qw(:DEFAULT :policyflags);
 use Debian::Dgit::Policy::Debian;
 
 initdebug('%');
@@ -67,6 +68,11 @@ our %deliberately;
 # [1] looking for the relevant git tag for the version number and not
 #    caring what that tag refers to.
 #
+#    When we are doing a push to a fresh repo, any version will do: in
+#    this case, this is the first dgit upload of an existing package,
+#    and we trust that the uploader hasn't included in their git
+#    history any previous non-dgit uploads.
+#
 # A wrinkle: if we approved a push recently, we treat NEW as having
 # a version which is in our history.  This is because the package may
 # still be being uploaded.  (We record this using the timestamp of the
@@ -100,33 +106,49 @@ sub apiquery ($) {
     return $r;
 }
 
-sub specific_suite_has_vsn_in_our_history ($) {
-    my ($suite) = @_;
+sub vsn_in_our_history ($) {
+    my ($vsn) = @_;
+
+    # Eventually, when we withdraw support for old-format (DEP-14
+    # namespace) tags, we will need to change this to only look
+    # for debiantag_new.  See the commit
+    #   "Tag change: Update dgit-repos-policy-debian"
+    # (reverting which is a good start for that change).
+
+    my @tagrefs = map { "refs/tags/".$_ } debiantags $vsn, $distro;
+    printdebug " checking history  vsn=$vsn tagrefs=@tagrefs\n";
+    open F, "-|", qw(git-for-each-ref), @tagrefs;
+    $_ = <F>;
+    close F;
+    return 1 if defined && m/\S/;
+    die "$pkg tagrefs @tagrefs $? $!" if $?;
+    return 0;
+}
+
+sub specific_suite_has_suitable_vsn ($$) {
+    my ($suite, $vsn_check) = @_; # tests $vsn_check->($version)
     my $in_suite = apiquery "dsc_in_suite/$suite/$pkg";
     foreach my $entry (@$in_suite) {
 	my $vsn = $entry->{version};
 	die "$pkg ?" unless defined $vsn;
-	my $tagref = "refs/tags/".debiantag $vsn, $distro;
-	printdebug " checking history suite=$suite vsn=$vsn tagref=$tagref\n";
-	$?=0; my $r = system qw(git show-ref --verify --quiet), $tagref;
-	return 1 if !$r;
-	next if $r==256;
-	die "$pkg tagref $tagref $? $!";
+	printdebug " checking history found suite=$suite vsn=$vsn\n";
+	return 1 if $vsn_check->($vsn);
     }
     return 0;
 }
 
 sub new_has_vsn_in_our_history () {
-    return specific_suite_has_vsn_in_our_history('new');
+    return specific_suite_has_suitable_vsn('new', \&vsn_in_our_history);
 }
 
-sub good_suite_has_vsn_in_our_history () {
+sub good_suite_has_suitable_vsn ($) {
+    my ($vsn_check) = @_; # as for specific_suite_has_specific_vsn
     my $suites = apiquery "suites";
     foreach my $suitei (@$suites) {
 	my $suite = $suitei->{name};
 	die unless defined $suite;
 	next if $suite =~ m/\bnew$/;
-	return 1 if specific_suite_has_vsn_in_our_history($suite);
+	return 1 if specific_suite_has_suitable_vsn($suite, $vsn_check);
     }
     return 0;
 }
@@ -221,7 +243,7 @@ sub check_package () {
     my $age = time -  $mtime;
     printdebug "check_package age=$age\n";
 
-    if (good_suite_has_vsn_in_our_history) {
+    if (good_suite_has_suitable_vsn(\&vsn_in_our_history)) {
 	chmod $publicmode, "." or die $!;
 	$pkg_secret = 0;
 	return 0;
@@ -281,10 +303,10 @@ sub action_push () {
     if (deliberately('include-questionable-history')) {
 	return 0;
     }
-    die "Package is in NEW and has not been accepted or rejected yet;".
+    die "\nPackage is in NEW and has not been accepted or rejected yet;".
 	" use a --deliberately option to specify whether you are".
 	" keeping or discarding the previously pushed history. ".
-	" Please RTFM dgit(1).\n";
+	" Please RTFM dgit(1).\n\n";
 }
 
 sub action_push_confirm () {
@@ -338,19 +360,21 @@ END
     my $mustreject=0;
 
     while (my $taintid = shift @taintids) {
-	# git cat-file prints a spurious newline after it gets EOF
-	# This is not documented.  I guess it might go away.  So we
-	# just read what we expect and then let it get SIGPIPE.
 	$!=0; $_ = <CHKOUT>;
-	die "$? $!" unless defined $_;
+	die "($taintid @objscatcmd) $!" unless defined $_;
 	printdebug "|< ", $_ if $debuglevel>=2;
 
 	next if m/^\w+ missing$/;
-	die unless m/^(\w+) (\w+) (\d+)\s/;
+	die "($taintid @objscatcmd) $_ ?" unless m/^(\w+) (\w+) (\d+)\s/;
 	my ($objid,$objtype,$nbytes) = ($1,$2,$3);
 
 	my $drop;
-	(read CHKOUT, $drop, $nbytes) == $nbytes or die;
+	(read CHKOUT, $drop, $nbytes) == $nbytes
+	    or die "($taintid @objscatcmd) $!";
+
+	$!=0; $_ = <CHKOUT>;
+	die "($taintid @objscatcmd) $!" unless defined $_;
+	die "($taintid @objscatcmd) $_ ?" if m/\S/;
 
 	$taintinfoq ||= $poldbh->prepare(<<END);
             SELECT package, time, comment FROM taints WHERE taint_id =  ?
@@ -358,7 +382,7 @@ END
         $taintinfoq->execute($taintid);
 
 	my $ti = $taintinfoq->fetchrow_hashref();
-	die unless $ti;
+	die "($taintid)" unless $ti;
 
 	my $timeshow = defined $ti->{time}
 	    ? " at time ".strftime("%Y-%m-%d %H:%M:%S Z", gmtime $ti->{time})
@@ -412,7 +436,7 @@ END
     }
 
     if (length $freshrepo) {
-	if (!good_suite_has_vsn_in_our_history()) {
+	if (!good_suite_has_suitable_vsn(sub { 1; })) {
 	    stat $freshrepo or die "$freshrepo $!";
 	    my $oldmode = ((stat _)[2]);
 	    my $oldwrites = $oldmode & 0222;