X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=infra%2Fdgit-repos-policy-debian;h=6e0f0dc3024bfbf6f80eb672f54f695b0cf9fdd2;hp=4ba3e8e144432071193092f6fd61223d265f01ff;hb=f485fbbfe8503d9bf6b2e0199d0e99e8487b74e4;hpb=f94881cfca1e725248ffed399f46b7c9128dc8e8 diff --git a/infra/dgit-repos-policy-debian b/infra/dgit-repos-policy-debian index 4ba3e8e1..6e0f0dc3 100755 --- a/infra/dgit-repos-policy-debian +++ b/infra/dgit-repos-policy-debian @@ -1,40 +1,41 @@ #!/usr/bin/perl -w # dgit repos policy hook script for Debian -# -# usages: -# dgit-repos-policy-debian DISTRO DGIT-REPOS-DIR ACTION... -# ie. -# dgit-repos-policy-debian ... check-list [...] -# dgit-repos-policy-debian ... check-package PACKAGE [...] -# dgit-repos-policy-debian ... push PACKAGE \ -# VERSION SUITE TAGNAME DELIBERATELIES [...] -# -# cwd for push is a temporary repo where the to-be-pushed objects have -# been received; TAGNAME is the version-based tag -# -# policy hook for a particular package will be invoked only once at -# a time use strict; +$SIG{__WARN__} = sub { die $_[0]; }; + use POSIX; use JSON; -use File::Temp; +use File::Temp qw(tempfile); +use DBI; +use IPC::Open2; +use Data::Dumper; use Debian::Dgit qw(:DEFAULT :policyflags); +use Debian::Dgit::Policy::Debian; + +initdebug('%'); +enabledebuglevel $ENV{'DGIT_DRS_DEBUG'}; our $distro = shift @ARGV // die "need DISTRO"; our $repos = shift @ARGV // die "need DGIT-REPOS-DIR"; +our $dgitlive = shift @ARGV // die "need DGIT-LIVE-DIR"; +our $distrodir = shift @ARGV // die "need DISTRO-DIR"; our $action = shift @ARGV // die "need ACTION"; our $publicmode = 02775; -our $policydb = "dbi:SQLite:$repos/policy"; -our $new_upload_propagation_slop = 3600*4 + 100; +our $new_upload_propagation_slop = 3600*4 + 100;# fixme config; our $poldbh; our $pkg; our $pkgdir; our ($pkg_exists,$pkg_secret); +our $stderr; + +our ($version,$suite,$tagname); +our %deliberately; + # We assume that it is not possible for NEW to have a version older # than sid. @@ -69,79 +70,54 @@ our ($pkg_exists,$pkg_secret); # still be being uploaded. (We record this using the timestamp of the # package's git repo directory.) - -sub poldb_setup () { - $poldbh = DBI->connect($policydb,'','', { - RaiseError=>1, PrintError=>1, AutoCommit=>0 - }); - $poldbh->do("PRAGMA foreign_keys = ON"); - - $poldbh->do(<do(<do(<commit; -} +# We aim for the following invariants and properties: +# +# - .dsc of published dgit package will have corresponding publicly +# visible dgit-repo (soon) +# +# - when a new package is rejected we help maintainer avoid +# accidentally including bad objects in published dgit history +# +# - .dsc of NEW dgit package has corresponding dgit-repo but not +# publicly readable sub apiquery ($) { my ($subpath) = @_; local $/=undef; - $!=0; $?=0; my $json = `dgit -d $distro archive-api-query $subpath`; - defined $json or die "$subpath $! $?"; - return decode_json $json; + my $cmd = "$dgitlive/dgit -d$distro \$DGIT_TEST_OPTS"; + $cmd .= " -".("D" x $debuglevel) if $debuglevel; + $cmd .= " archive-api-query $subpath"; + printdebug "apiquery $cmd\n"; + $!=0; $?=0; my $json = `$cmd`; + defined $json && !$? or die "$subpath $! $?"; + my $r = decode_json $json; + my $d = new Data::Dumper([$r], [qw(r)]); + printdebug "apiquery $subpath | ", $d->Dump() if $debuglevel>=2; + return $r; } sub specific_suite_has_vsn_in_our_history ($) { my ($suite) = @_; - my $in_new = apiquery "/dsc_in_suite/$suite/$pkg"; - foreach my $entry (@$in_new) { + my $in_suite = apiquery "dsc_in_suite/$suite/$pkg"; + foreach my $entry (@$in_suite) { my $vsn = $entry->{version}; die "$pkg ?" unless defined $vsn; - my $tag = debiantag $vsn; - $?=0; my $r = system qw(git show-ref --verify --quiet), $tag; + my $tagref = "refs/tags/".debiantag $vsn; + printdebug " checking history suite=$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 tag $tag $? $!"; + die "$pkg tagref $tagref $? $!"; } return 0; } sub new_has_vsn_in_our_history () { - stat $pkgdir or die "$pkgdir $!"; - my $mtime = ((stat _)[9]); - my $age = time - $mtime; - return 1 if $age < $new_upload_propagation_slop; return specific_suite_has_vsn_in_our_history('new'); } sub good_suite_has_vsn_in_our_history () { - my $suites = apiquery "/suites"; + my $suites = apiquery "suites"; foreach my $suitei (@$suites) { my $suite = $suitei->{name}; die unless defined $suite; @@ -151,48 +127,63 @@ sub good_suite_has_vsn_in_our_history () { return 0; } +sub statpackage () { + $pkgdir = "$repos/$pkg.git"; + if (!stat_exists $pkgdir) { + printdebug "statpackage $pkg => ENOENT\n"; + $pkg_exists = 0; + } else { + $pkg_exists = 1; + $pkg_secret = !!(~(stat _)[2] & 05); + printdebug "statpackage $pkg => exists, secret=$pkg_secret.\n"; + } +} + sub getpackage () { - die unless @ARGV > 1; + die unless @ARGV >= 1; $pkg = shift @ARGV; - die if $pkg =~ m#[^-+.0-9a-z]#; - die unless $pkg =~ m#^[^-]#; + die unless $pkg =~ m/^$package_re$/; - $pkgdir = "$repos/$pkg"; - if (!stat $pkgdir) { - die "$pkgdir $!" unless $!==ENOENT; - $pkg_exists = 0; - } - $pkg_exists = 1; - $pkg_secret = !!(~(stat _)[2] & 05); + statpackage(); } sub add_taint ($$) { - my ($gitobjid, $gitobjtype, $reason) = @_; + my ($refobj, $reason) = @_; + + printdebug "TAINTING $refobj\n", + (map { "\%| $_" } split "\n", $reason), + "\n"; my $tf = new File::Temp or die $!; - print $tf "$gitobjid\n" or die $!; + print $tf "$refobj^0\n" or die $!; + flush $tf or die $!; + seek $tf,0,0 or die $!; my $gcfpid = open GCF, "-|"; defined $gcfpid or die $!; if (!$gcfpid) { open STDIN, "<&", $tf or die $!; - exec 'git', 'cat-file'; + exec 'git', 'cat-file', '--batch'; die $!; } close $tf or die $!; $_ = ; - m/^(\w+) (\w+) (\d+)\n/ or die "$objline ?"; - $1 eq $gitobjid or die "$! $gitobjid ?"; - $2 eq $gitobjtype or die "$! $gitobjtype ?"; + defined $_ or die; + m/^(\w+) (\w+) (\d+)\n/ or die "$_ ?"; + my $gitobjid = $1; + my $gitobjtype = $2; my $bytes = $3; my $gitobjdata; - $!=0; read GCF, $gitobjdata, $bytes == $bytes or die "$gitobjid $bytes $!"; + if ($gitobjtype eq 'commit' or $gitobjtype eq 'tag') { + $!=0; read GCF, $gitobjdata, $bytes == $bytes + or die "$gitobjid $bytes $!"; + } close GCF; $poldbh->do("INSERT INTO taints". - " (package, gitobjid, gitobjtype, gitobjdata, time, comment)", + " (package, gitobjid, gitobjtype, gitobjdata, time, comment)". " VALUES (?,?,?,?,?,?)", {}, $pkg, $gitobjid, $gitobjtype, $gitobjdata, time, $reason); @@ -200,62 +191,267 @@ sub add_taint ($$) { die unless defined $taint_id; $poldbh->do("INSERT INTO taintoverrides". - " (taint_id, 'include-questionable-history')", - " VALUES (?)", {}, - $taint_id); + " (taint_id, deliberately)". + " VALUES (?, '--deliberately-include-questionable-history')", + {}, $taint_id); } +sub add_taint_by_tag ($$) { + my ($tagname,$refobjid) = @_; + add_taint($refobjid, + "tag $tagname referred to this object in git tree but all". + " previously pushed versions were found to have been". + " removed from NEW (ie, rejected) (or never arrived)"); +} -sub action__check_package () { +sub action_check_package () { getpackage(); return 0 unless $pkg_exists; return 0 unless $pkg_secret; + printdebug "check_package\n"; + chdir $pkgdir or die "$pkgdir $!"; - return if new_has_vsn_in_our_history(); + + stat '.' or die "$pkgdir $!"; + my $mtime = ((stat _)[9]); + my $age = time - $mtime; + printdebug "check_package age=$age\n"; + + return 0 if $age < $new_upload_propagation_slop; + + return 0 if new_has_vsn_in_our_history(); if (good_suite_has_vsn_in_our_history) { chmod $publicmode, "." or die $!; return 0; } - open TAGL, "git for-each-ref '[r]efs/tags/*' |" or die $!; - while () { - m#^(\w+) (\w+) (refs/tags/\S+)\s# or die "$_ ?"; - add_taint($1,$2, - "tag $3 referred to this object in git tree but all". - " previously pushed versions were found to have been". - " removed from NEW (ie, rejected) (or never arrived)"); - } - $?=0; $!=0; close TAGL or die "git for-each-ref $? $!"; + printdebug "check_package secret, deleted, tainting\n"; + + git_for_each_ref('refs/tags', sub { + my ($objid,$objtype,$fullrefname,$tagname) = @_; + add_taint_by_tag($tagname,$objid); + }); return FRESHREPO; } -sub action_push () { - # we suppose that NEW has a version which is already in our - # history, as otherwise the repo would have been blown away +sub getpushinfo () { + die unless @ARGV >= 4; + $version = shift @ARGV; + $suite = shift @ARGV; + $tagname = shift @ARGV; + my $delibs = shift @ARGV; + foreach my $delib (split /\,/, $delibs) { + $deliberately{$delib} = 1; + } +} + +sub deliberately ($) { return $deliberately{$_[0]}; } +sub action_push () { getpackage(); + getpushinfo(); + return 0 unless $pkg_exists; return 0 unless $pkg_secret; - xxx up to here + # we suppose that NEW has a version which is already in our + # history, as otherwise the repo would have been blown away + + if (deliberately('not-fast-forward')) { + add_taint(server_ref($suite), + "suite $suite when --deliberately-not-fast-forward". + " specified in signed tag $tagname for upload of". + " version $version into suite $suite"); + return NOFFCHECK|FRESHREPO; + } + if (deliberately('include-questionable-history')) { + return 0; + } + die "Package 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"; } +sub action_push_confirm () { + getpackage(); + getpushinfo(); + die unless @ARGV >= 1; + my $freshrepo = shift @ARGV; + + my $initq = $poldbh->prepare(<execute($pkg); + + my @taintids; + my $chkinput = tempfile(); + while (my $taint = $initq->fetchrow_hashref()) { + push @taintids, $taint->{taint_id}; + print $chkinput $taint->{gitobjid}, "\n" or die $!; + } + flush $chkinput or die $!; + seek $chkinput,0,0 or die $!; + + my $checkpid = open CHKOUT, "-|" // die $!; + if (!$checkpid) { + open STDIN, "<&", $chkinput or die $!; + exec qw(git cat-file --batch) or die $!; + } + + my ($taintinfoq,$overridesanyq,$untaintq,$overridesq); + + my $overridesstmt = <; + die "$? $!" unless defined $_; + + next if m/^\w+ missing$/; + die unless m/^(\w+) (\w+) (\d+)\s/; + my ($objid,$objtype,$nbytes) = ($1,$2,$3); + + my $drop; + (read CHKOUT, $drop, $nbytes) == $nbytes or die; + + $taintinfoq ||= $poldbh->prepare(<execute($taintid); + + my $ti = $taintinfoq->fetchrow_hashref(); + die unless $ti; + + my $timeshow = defined $ti->{time} + ? " at time ".strftime("%Y-%m-%d %H:%M:%S Z", gmtime $ti->{time}) + : ""; + my $pkgshow = length $ti->{package} + ? "package $ti->{package}" + : "any package"; + + $stderr .= <{comment} +END + + printdebug "SQL overrides: @overridesv $taintid /\n$overridesstmt\n"; + + $overridesq ||= $poldbh->prepare($overridesstmt); + $overridesq->execute(@overridesv, $taintid); + my ($ovwhy) = $overridesq->fetchrow_array(); + if (!defined $ovwhy) { + $overridesanyq ||= $poldbh->prepare(<execute($taintid); + my ($ovany) = $overridesanyq->fetchrow_array(); + $stderr .= $ovany ? <prepare(<execute($taintid); + } + } + close CHKOUT; + + if ($mustreject) { + $stderr .= <> 1)); + printdebug sprintf "chmod %#o (was %#o) %s\n", + $newmode, $oldmode, $freshrepo; + chmod $newmode, $freshrepo or die $!; + utime undef, undef, $freshrepo or die $!; + } + } + + return 0; +} +sub action_check_list () { + opendir L, "$repos" or die "$repos $!"; + while (defined (my $dent = readdir L)) { + next unless $dent =~ m/^($package_re)\.git$/; + $pkg = $1; + statpackage(); + next unless $pkg_exists; + next unless $pkg_secret; + print "$pkg\n" or die $!; + } + closedir L or die $!; + close STDOUT or die $!; + return 0; +} -if (defined $pkg) { - selectpackage; +$action =~ y/-/_/; +my $fn = ${*::}{"action_$action"}; +if (!$fn) { + printdebug "dgit-repos-policy-debian: unknown action $action\n"; + exit 0; } -my $fn = ${*::}{"action__$cmd"}; -$fn or die "unknown ACTION"; +my $sleepy=0; +our $rcode = 127; + +for (;;) { + poldb_setup(poldb_path($repos)); + $stderr = ''; -poldb_setup(); + $rcode = $fn->(); + die unless defined $rcode; -my $rcode = $fn->(); -die unless defined $rcode; + eval { $poldbh->commit; }; + last unless length $@; + + die if $sleepy >= 20; + print STDERR "[policy database busy, retrying]\n"; + sleep ++$sleepy; + + $poldbh->rollback; +} -poldb_commit(); +print STDERR $stderr; exit $rcode;