#!/usr/bin/perl -w
# dgit-repos-server
#
+# git protocol proxy to check dgit pushes etc.
+#
+# Copyright (C) 2014-2017,2019 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
+# dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] \
+# --tag2upload URL TAGNAME
# settings
# --repos=GIT-REPOS-DIR default DISTRO-DIR/repos/
# --suites=SUITES-FILE default DISTRO-DIR/suites
# (With --cron AUTH-SPEC is not used and may be the empty string.)
use strict;
+use Carp;
+use IO::Handle;
+use Debian::Dgit::Infra; # must precede Debian::Dgit; - can change @INC!
use Debian::Dgit qw(:DEFAULT :policyflags);
setup_sigwarn();
# as a result of this the stunt pre-receive hook runs; it does this:
# + understand what refs we are allegedly updating and
# check some correspondences:
-# * we are updating only refs/tags/DISTRO/* and refs/dgit/*
+# * we are updating only refs/tags/[archive/]DISTRO/* and refs/dgit/*
# * and only one of each
# * and the tag does not already exist
# and
# * the signed tag must refer to a commit
# * the signed tag commit must be the refs/dgit value
# * the name in the signed tag must correspond to its ref name
-# * the tag name must be debian/<version> (massaged as needed)
+# * the tag name must be [archive/]debian/<version> (massaged as needed)
# * the suite is one of those permitted
# * the signed tag has a suitable name
# * run the "push" policy hook
# 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) = @_;
# => ($exitstatuspolicybitmap);
ensuredir "$dgitrepos/_removed-tags";
open PREVIOUS, ">>", removedtagsfile or die removedtagsfile." $!";
- git_for_each_ref('refs/tags/'.debiantag('*',$distro), sub {
+ git_for_each_ref([ map { 'refs/tags/'.$_ } debiantags('*',$distro) ],
+ sub {
my ($objid,$objtype,$fullrefname,$reftail) = @_;
print PREVIOUS "\n$objid $reftail .\n" or die $!;
}, $real);
rmtree "${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";
exec qw(git show-ref);
die $!;
}
- my %got = qw(tag 0 head 0);
+ my %got = qw(newtag 0 omtag 0 head 0);
while (<SR>) {
chomp or die;
printdebug " show-refs| $_\n";
s/^\S*[1-9a-f]\S* (\S+)$/$1/ or die;
next if m{^refs/heads/master$};
my $wh =
- m{^refs/tags/} ? 'tag' :
+ m{^refs/tags/archive/} ? 'newtag' :
+ m{^refs/tags/} ? 'omtag' :
m{^refs/dgit/} ? 'head' :
die;
+ use Data::Dumper;
die if $got{$wh}++;
}
$!=0; $?=0; close SR or $?==256 or die "$? $!";
printdebug "installprospective ?\n";
die Dumper(\%got)." -- missing refs in new repo"
- if grep { !$_ } values %got;
+ unless $got{head} && grep { m/tag$/ && $got{$_} } keys %got;
lockrealtree();
our ($tagname, $tagval, $suite, $oldcommit, $commit);
our ($version, %tagh);
+our ($maint_tagname, $maint_tagval);
our ($tagexists_error);
sub readupdates () {
printdebug " updates ...\n";
+ my %tags;
while (<STDIN>) {
chomp or die;
printdebug " upd.| $_\n";
m/^(\S+) (\S+) (\S+)$/ or die "$_ ?";
my ($old, $sha1, $refname) = ($1, $2, $3);
- if ($refname =~ m{^refs/tags/(?=$distro/)}) {
- reject "pushing multiple tags!" if defined $tagname;
- $tagname = $'; #';
- $tagval = $sha1;
- $tagexists_error= "tag $tagname already exists -".
+ if ($refname =~ m{^refs/tags/(?=(?:archive/)?$distro/)}) {
+ my $tn = $'; #';
+ $tags{$tn} = $sha1;
+ $tagexists_error= "tag $tn already exists -".
" not replacing previously-pushed version"
if $old =~ m/[^0]/;
} elsif ($refname =~ m{^refs/dgit/}) {
}
STDIN->error and die $!;
- reject "push is missing tag ref update" unless defined $tagname;
+ reject "push is missing tag ref update" unless %tags;
+ my @dtags = grep { m#^archive/# } keys %tags;
+ reject "need exactly one archive/* tag" if @dtags!=1;
+ my @mtags = grep { !m#^archive/# } keys %tags;
+ reject "pushing too many non-dgit tags" if @mtags>1;
+ ($tagname) = @dtags;
+ ($maint_tagname) = @mtags;
+ $tagval = $tags{$tagname};
+ $maint_tagval = $tags{$maint_tagname // ''};
+
reject "push is missing head ref update" unless defined $suite;
printdebug " updates ok.\n";
}
-sub parsetag () {
- printdebug " parsetag...\n";
+sub readtag () {
+ printdebug " readtag...\n";
+
open PT, ">dgit-tmp/plaintext" or die $!;
open DS, ">dgit-tmp/plaintext.asc" or die $!;
open T, "-|", qw(git cat-file tag), $tagval or die $!;
}
}
$!=0; $_=<T>; defined or die $!;
- m/^($package_re) release (\S+) for \S+ \((\S+)\) \[dgit\]$/ or
- reject "tag message not in expected format";
+}
- die unless $1 eq $package;
- $version = $2;
- die "$3 != $suite " unless $3 eq $suite;
+sub parsetag_general ($$) {
+ my ($dgititemfn, $distrofn) = @_;
+ printdebug " parsetag...\n";
my $copyl = $_;
for (;;) {
if (m/^\[dgit ([^"].*)\]$/) { # [dgit "something"] is for future
$_ = $1." ";
while (length) {
- if (s/^distro\=(\S+) //) {
- die "$1 != $distro" unless $1 eq $distro;
- } elsif (s/^(--deliberately-$deliberately_re) //) {
- push @deliberatelies, $1;
- } elsif (s/^previously:(\S+)=(\w+) //) {
- die "previously $1 twice" if defined $previously{$1};
- $previously{$1} = $2;
- } elsif (s/^[-+.=0-9a-z]\S* //) {
+ if ($dgititemfn->()) {
+ } elsif (s/^distro\=(\S+) //) {
+ $distrofn->($1);
+ } elsif (s/^([-+.=0-9a-z]\S*) //) {
+ printdebug " parsetag ignoring unrecognised \`$1'\n";
} else {
die "unknown dgit info in tag ($_)";
}
}
last if m/^-----BEGIN PGP/;
}
+
$_ = $copyl;
for (;;) {
print DS or die $!;
printdebug " parsetag ok.\n";
}
+sub parsetag () {
+ readtag();
+ m/^($package_re) release (\S+) for \S+ \((\S+)\) \[dgit\]$/ or
+ reject "tag message not in expected format";
+ die unless $1 eq $package;
+ $version = $2;
+ die "$3 != $suite " unless $3 eq $suite;
+
+ parsetag_general sub {
+ if (s/^(--deliberately-$deliberately_re) //) {
+ push @deliberatelies, $1;
+ } elsif (s/^previously:(\S+)=(\w+) //) {
+ die "previously $1 twice" if defined $previously{$1};
+ $previously{$1} = $2;
+ } else {
+ return 0;
+ }
+ return 1;
+ }, sub {
+ my ($gotdistro) = @_;
+ die "$gotdistro != $distro" unless $gotdistro eq $distro;
+ };
+}
+
sub checksig_keyring ($) {
my ($keyringfile) = @_;
# returns primary-keyid if signed by a key in this keyring
printdebug " dm_txt_check $keyid $dmtxtfn\n";
open DT, '<', $dmtxtfn or die "$dmtxtfn $!";
while (<DT>) {
- m/^fingerprint:\s+$keyid$/oi
+ m/^fingerprint:\s+\Q$keyid\E$/oi
..0 or next;
if (s/^allow:/ /i..0) {
} else {
# current head for the suite (there must be at least one).
#
# This prevents any tag implying a NOFFCHECK push being
- # replayed to rewind from a different head.
+ # replayed to overwrite a different head.
#
# The possibility of an earlier ff-only push being replayed is
# eliminated as follows: the tag from such a push would still
return $vals->[0];
}
-sub checks () {
+sub basic_tag_checks() {
printdebug "checks\n";
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";
+}
+
+sub checks () {
+ basic_tag_checks();
- my $expecttagname = debiantag $version, $distro;
- printdebug "expected tag $expecttagname\n";
- $tagname eq $expecttagname or die;
+ my @expecttagnames = debiantags($version, $distro);
+ printdebug "expected tag @expecttagnames\n";
+ grep { $tagname eq $_ } @expecttagnames or die;
+
+ foreach my $othertag (grep { $_ ne $tagname } @expecttagnames) {
+ reject "tag $othertag already exists -".
+ " not replacing previously-pushed version"
+ if git_get_ref "refs/tags/".$othertag;
+ }
lockrealtree();
@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/$tagname";
+ push @cmd, "$maint_tagval:refs/tags/$maint_tagname"
+ if defined $maint_tagname;
debugcmd '+',@cmd;
$!=0;
my $r = system @cmd;
# workrepo and destrepo handled ad-hoc
+sub mode_tag2upload () {
+ # CALLER MUST PREVENT MULTIPLE CONCURRENT RUNS IN SAME CWD
+ # If we fail (exit nonzero), caller should capture our stderr,
+ # and retry some bounded number of times in some appropriate way
+ # Uses whatever ambient gpg key is available
+ @ARGV==2 or die;
+
+ my $url;
+ ($url,$tagval) = @ARGV;
+
+ $ENV{DGIT_DRS_EMAIL_NOREPLY} // die;
+
+ my $start = time // die;
+ my @t = gmtime $start;
+
+ die if $url =~ m/[^[:graph:]]/;
+ die if $tagval =~ m/[^[:graph:]]/;
+
+ open OL, ">>overall.log" or die $!;
+ autoflush OL 1;
+ my $quit = sub {
+ printf OL "%04d-%02d-%02d %02d:%02d:%02d (%04ds): %s %s: %s\n",
+ $t[5] + 1900, @t[4,3,2,1,0], (time-$start), $url, $tagval, $_[0];
+ exit 0;
+ };
+
+ $ENV{DGIT_DRS_ANY_URL} or $url =~ m{^https://}s
+ or $quit->("url scheme not as expected");
+
+ $tagval =~ m{^$distro/($versiontag_re)$}s
+ or $quit->("tag name not for us");
+
+ $version = $1;
+ $version =~ y/_\%\#/:~/d;
+
+ my $work = 'work';
+
+ my $tagref = "refs/tags/$tagval";
+
+ rmtree $work;
+ rmtree 'bpd';
+ mkdir $work or die $!;
+ mkdir 'bpd' or die $!;
+ unlink <*.orig*>;
+ dif $! if <*.orig*>;
+ changedir $work;
+ runcmd qw(git init -q);
+ runcmd qw(git remote add origin), $url;
+ runcmd qw(git fetch --depth=1 origin), "$tagref:$tagref";
+ changedir ".git";
+ mkdir 'dgit-tmp' or die $!;
+
+ my $tagger;
+ open T, "-|", qw(git cat-file tag), $tagval or die $!;
+ {
+ local $/ = undef;
+ $!=0; $_=<T>; defined or die $!;
+
+ # quick and dirty check, will check properly later
+ m/^\[dgit[^"]* please-upload(?:\]| )/m or
+ $quit->("tag missing please-upload request");
+
+ m/^tagger (.*) \d+ [-+]\d+$/m or
+ $quit->("failed to fish tagger out of tag");
+ $tagger = $1;
+ };
+
+ readtag();
+ m/^($package_re) release (\S+) for ($suite_re)$/ or
+ $quit->("tag headline not for us");
+ $package = $1;
+ my $tagmversion = $2;
+ $suite = $3;
+
+
+ # This is for us. From now on, we will capture errors to
+ # be emailed to the tagger.
+
+ open H, ">>dgit-tmp/tagupl.email" or die $!;
+ print H <<END or die $!;
+Subject: push-to-upload failed, $package $version ($distro)
+X-Debian-Push-Distro: $distro
+X-Debian-Push-Package: $package
+END
+ printf H "To: %s", $tagger or die $!; # no newline
+ flush H or die $!;
+
+ open L, ">>dgit-tmp/tagupl.log" or die $!;
+
+ my $child = fork() // die $!;
+ if ($child) {
+ # we are the parent
+ # if child exits 0, it has called $quit->()
+ $!=0; waitpid $child, 0 == $child or die $!;
+ printdebug "child $child ?=$?\n";
+ exit 0 unless $?;
+ print L "execution child: ", waitstatusmsg(), "\n" or die $!;
+ close L or die $!;
+ print H <<END or die $!;
+
+
+Processing of tag $tagval
+From url $url
+Was not successful:
+
+END
+ $ENV{DGIT_DRS_SENDMAIL} //= '/usr/lib/sendmail';
+
+ close H or die $!;
+ runcmd qw(sh -ec), <<"END";
+ cd dgit-tmp
+ cat tagupl.log >>tagupl.email
+ $ENV{DGIT_DRS_SENDMAIL} -oee -odb -oi -t \\
+ -f$ENV{DGIT_DRS_EMAIL_NOREPLY} \\
+ <tagupl.email
+END
+ $quit->("failed, emailed");
+ }
+
+ open STDERR, ">&L" or die $!;
+ open STDOUT, ">&STDERR" or die $!;
+ open DEBUG, ">&STDERR" if $debuglevel;
+
+ reject "version mismatch $tagmversion != $version "
+ unless $tagmversion eq $version;
+
+ my %need = map { $_ => 1 } qw(please-upload split);
+ my ($upstreamc, $upstreamt);
+ my $quilt;
+ my $distro_ok;
+
+ confess if defined $upstreamt;
+
+ parsetag_general sub {
+ if (m/^(\S+) / && exists $need{$1}) {
+ $_ = $';
+ delete $need{$1};
+ } elsif (s/^upstream=(\w+) //) {
+ $upstreamc = $1;
+ } elsif (s/^upstream-tag=(\S+) //) {
+ $upstreamt = $1;
+ } elsif (s/^--quilt=([-+0-9a-z]+) //) {
+ $quilt = $1;
+ } else {
+ return 0;
+ }
+ return 1;
+ }, sub {
+ my ($gotdistro) = @_;
+ $distro_ok ||= $gotdistro eq $distro;
+ };
+
+ $quit->("not for this distro") unless $distro_ok;
+
+ reject "missing \"$_\"" foreach keys %need;
+
+ verifytag();
+
+ reject "upstream tag and not commitish, or v-v"
+ unless defined $upstreamt == defined $upstreamc;
+
+ my @dgit;
+ push @dgit, $ENV{DGIT_DRS_DGIT} // 'dgit';
+ push @dgit, '-wn';
+ push @dgit, "-p$package";
+ push @dgit, '--build-products-dir=../bpd';
+
+ changedir "..";
+ runcmd (@dgit, qw(setup-gitattributes));
+
+ my @fetch = qw(git fetch origin --unshallow);
+ if (defined $upstreamt) {
+ runcmd qw(git check-ref-format), "refs/tags/$upstreamt";
+ my $utagref = "refs/tags/$upstreamt";
+ push @fetch, "$utagref:$utagref";
+ }
+ runcmd @fetch;
+
+ runcmd qw(git checkout -q), "refs/tags/$tagval";
+
+ my $clogp = parsechangelog();
+ my $clogf = sub {
+ my ($f, $exp) = @_;
+ my $got = getfield $clogp, $f;
+ return if $got eq $exp;
+ reject "mismatch: changelog $f $got != $exp";
+ };
+ $clogf->('Version', $version);
+ $clogf->('Source', $package);
+
+ @fetch = (@dgit, qw(--for-push fetch), $suite);
+ debugcmd "+",@_;
+ $!=0; $?=-1;
+ if (system @fetch) {
+ failedcmd @fetch unless $? == 4*256;
+ }
+ # this is just to get the orig, so we don't really care about the ref
+ if (defined $upstreamc) {
+ my $need_upstreamc = git_rev_parse "refs/tags/$upstreamt";
+ $upstreamc eq $need_upstreamc or reject
+ "upstream-commitish=$upstreamc but tag refers to $need_upstreamc";
+ runcmd qw(git deborig), "$upstreamc";
+ }
+
+ my @dgitcmd;
+ push @dgitcmd, @dgit;
+ push @dgitcmd, qw(--force-uploading-source-only);
+ if (defined $quilt) {
+ push @dgitcmd, "--quilt=$quilt";
+ if ($quilt =~ m/baredebian/) {
+ die "needed upstream commmitish with --quilt=baredebian"
+ unless defined $upstreamc;
+ push @dgitcmd, "--upstream-commitish=refs/tags/$upstreamt";
+ }
+ }
+ push @dgitcmd, qw(push-source --new --overwrite), $suite;
+
+ runcmd @dgitcmd;
+
+ $quit->('done');
+}
+
sub mode_ssh () {
die if @ARGV;
$ENV{"DGIT_DRS_\U$_"} = ${ $main::{$_} } foreach @hookenvs;
- die unless @ARGV==1;
+ die unless @ARGV>=1;
my $mode = shift @ARGV;
die unless $mode =~ m/^--(\w+)$/;
~ianmdlvl / dgit.git / blobdiff