3 # Integration between git and Debian-style archives
5 # Copyright (C)2013 Ian Jackson
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 use Dpkg::Control::Hash;
36 our %format_ok = map { $_=>1 } ("1.0","3.0 (native)","3.0 (quilt)");
39 our (@dget) = qw(dget);
40 our (@dput) = qw(dput);
41 our (@debsign) = qw(debsign);
45 open DEBUG, ">/dev/null" or die $!;
47 our %opts_opt_map = ('dget' => \@dget,
49 'debsign' => \@debsign);
51 our $remotename = 'dgit';
52 our $ourdscfield = 'Vcs-Git-Master';
53 our $branchprefix = 'dgit';
55 sub lbranch () { return "$branchprefix/$suite"; }
56 my $lbranch_re = '^refs/heads/'.$branchprefix.'/([^/.]+)$';
57 sub lref () { return "refs/heads/".lbranch(); }
58 sub lrref () { return "refs/remotes/$remotename/$suite"; }
59 sub rrref () { return "refs/$branchprefix/$suite"; }
60 sub debiantag ($) { return "debian/$_[0]"; }
64 return "+".rrref().":".lrref();
71 $ua = LWP::UserAgent->new();
74 print "downloading @_...\n";
75 my $r = $ua->get(@_) or die $!;
76 die "$_[0]: ".$r->status_line."; failed.\n" unless $r->is_success;
77 return $r->decoded_content();
80 our ($dscdata,$dscurl,$dsc);
85 print $fh $intro or die $!;
89 if (s{['\\]}{\\$&}g || m{\s} || m{[^-_./0-9a-z]}i) {
90 print $fh " '$_'" or die $!;
92 print $fh " $_" or die $!;
95 print $fh "\n" or die $!;
99 printcmd(\*DEBUG,"+",@_) if $debug>0;
101 die "@_ $! $?" if system @_;
104 sub cmdoutput_errok {
105 die Dumper(\@_)." ?" if grep { !defined } @_;
106 printcmd(\*DEBUG,"|",@_) if $debug>0;
107 open P, "-|", @_ or die $!;
110 { local $/ = undef; $d = <P>; }
112 close P or return undef;
118 my $d = cmdoutput_errok @_;
119 defined $d or die "@_ $? $!";
124 printcmd(\*STDOUT,"#",@_);
127 sub runcmd_ordryrun {
135 our %defcfg = ('dgit.default.distro' => 'debian',
136 'dgit.default.username' => '',
137 'dgit.default.ssh' => 'ssh',
138 'dgit-distro.debian.git-host' => 'git.debian.org',
139 'dgit-distro.debian.git-proto' => 'git+ssh://',
140 'dgit-distro.debian.git-path' => '/git/dgit-repos',
141 'dgit-distro.debian.git-check' => 'ssh-cmd',
142 'dgit-distro.debian.git-create' => 'ssh-cmd',
143 'dgit-distro.debian.mirror' => 'http://ftp.debian.org/debian/');
150 local ($debug) = $d2;
151 $v = cmdoutput_errok(@git, qw(config --), $c);
159 my $dv = $defcfg{$c};
160 return $dv if defined $dv;
165 sub access_distro () {
166 return cfg("dgit-suite.$suite.distro",
167 "dgit.default.distro");
172 my $distro = access_distro();
173 my $value = cfg("dgit-distro.$distro.$key",
174 "dgit.default.$key");
178 sub access_gituserhost () {
179 my $user = access_cfg('git-user');
180 my $host = access_cfg('git-host');
181 return defined($user) && length($user) ? "$user\@$host" : $host;
184 sub access_giturl () {
185 my $url = access_cfg('git-url');
188 access_cfg('git-proto').
189 access_gituserhost().
190 access_cfg('git-path');
192 return "$url/$package.git";
196 my $c = Dpkg::Control::Hash->new();
197 $c->load(@_) or return undef;
202 my $c = Dpkg::Control::Hash->new();
203 my $p = new IO::Handle;
204 open $p, '-|', qw(dpkg-parsechangelog) or die $!;
206 $?=0; $!=0; close $p or die "$! $?";
212 sub archive_query () {
213 my $query = access_cfg('archive-query');
214 $query ||= "madison:".access_distro();
215 $query =~ s/^(\w+):// or die "$query ?";
218 die unless $proto eq 'madison';
219 $rmad ||= cmdoutput qw(rmadison -asource),"-s$suite","-u$url",$package;
220 $rmad =~ m/^ \s*( [^ \t|]+ )\s* \|
221 \s*( [^ \t|]+ )\s* \|
222 \s*( [^ \t|]+ )\s* \|
223 \s*( [^ \t|]+ )\s* /x or die "$rmad $?";
224 $1 eq $package or die "$rmad $package ?";
227 # madison canonicalises for us
228 print "canonical suite name for $suite is $3\n";
231 $4 eq 'source' or die "$rmad ?";
232 my $prefix = substr($package, 0, $package =~ m/^l/ ? 4 : 1);
233 my $subpath = "/pool/main/$prefix/$package/${package}_$vsn.dsc";
234 return ($vsn,$subpath);
237 sub canonicalise_suite () {
241 sub get_archive_dsc () {
242 my ($vsn,$subpath) = archive_query();
243 # fixme madison does not show us the component
244 $dscurl = access_cfg('mirror').$subpath;
245 $dscdata = url_get($dscurl);
246 my $dscfh = new IO::File \$dscdata, '<' or die $!;
247 print DEBUG Dumper($dscdata) if $debug>1;
248 $dsc = Dpkg::Control::Hash->new(allow_pgp=>1);
249 $dsc->parse($dscfh, 'dsc') or die "parsing of $dscurl failed\n";
250 print DEBUG Dumper($dsc) if $debug>1;
251 my $fmt = $dsc->{Format};
252 die "unsupported format $fmt, sorry\n" unless $format_ok{$fmt};
255 sub check_for_git () {
257 my $how = access_cfg('git-check');
258 if ($how eq 'ssh-cmd') {
260 (access_cfg('ssh'),access_gituserhost(),
261 " set -e; cd ".access_cfg('git-path').";".
262 " if test -d $package.git; then echo 1; else echo 0; fi");
263 print DEBUG "got \`$r'\n";
264 die "$r $! $?" unless $r =~ m/^[01]$/;
267 die "unknown git-check $how ?";
271 sub create_remote_git_repo () {
272 my $how = access_cfg('git-create');
273 if ($how eq 'ssh-cmd') {
275 (access_cfg('ssh'),access_gituserhost(),
276 "set -e; cd ".access_cfg('git-path').";".
277 " mkdir -p $package.git;".
279 " if ! test -d objects; then git init --bare; fi");
281 die "unknown git-create $how ?";
285 our ($dsc_hash,$upload_hash);
287 our $ud = '.git/dgit/unpack';
295 sub mktree_in_ud_from_only_subdir () {
296 # changes into the subdir
299 $dirs[0] =~ m#^([^/]+)/\.$# or die;
301 chdir $dir or die "$dir $!";
303 die $! unless $!==&ENOENT;
304 runcmd qw(git init -q);
305 rmtree('.git/objects');
306 symlink '../../../../objects','.git/objects' or die $!;
307 runcmd @git, qw(add -Af);
308 my $tree = cmdoutput @git, qw(write-tree);
309 chomp $tree; $tree =~ m/^\w+$/ or die "$tree ?";
315 m/^\w+ \d+ (\S+)$/ or die "$_ ?";
317 } grep m/\S/, split /\n/, ($dsc->{'Checksums-Sha256'} || $dsc->{Files});
320 sub is_orig_file ($) {
322 m/\.orig(?:-\w+)?\.tar\.\w+$/;
325 sub generate_commit_from_dsc () {
329 foreach my $f (dsc_files()) {
330 die if $f =~ m#/|^\.|\.dsc$|\.tmp$#;
332 link "../../../$f", $f
336 runcmd @dget, qw(--), $dscurl;
337 foreach my $f (grep { is_orig_file($_) } @files) {
338 link $f, "../../../../$f"
342 my ($tree,$dir) = mktree_in_ud_from_only_subdir();
343 runcmd qw(sh -ec), 'dpkg-parsechangelog >../changelog.tmp';
344 my $clogp = parsecontrol('../changelog.tmp','changelog') or die;
345 my $date = cmdoutput qw(date), '+%s %z', qw(-d),$clogp->{Date};
346 my $author = $clogp->{Maintainer};
347 $author =~ s#,.*##ms;
348 my $authline = "$author $date";
349 $authline =~ m/^[^<>]+ \<\S+\> \d+ [-+]\d+$/ or die $authline;
350 open C, ">../commit.tmp" or die $!;
351 print C "tree $tree\n" or die $!;
352 print C "parent $upload_hash\n" or die $! if $upload_hash;
353 print C <<END or die $!;
359 # imported by dgit from the archive
362 my $commithash = cmdoutput @git, qw(hash-object -w -t commit ../commit.tmp);
363 print "synthesised git commit from .dsc $clogp->{Version}\n";
364 chdir '../../../..' or die $!;
365 cmdoutput @git, qw(update-ref -m),"dgit synthesise $clogp->{Version}",
366 'DGIT_ARCHIVE', $commithash;
367 cmdoutput @git, qw(log -n2), $commithash;
368 # ... gives git a chance to complain if our commit is malformed
369 my $outputhash = $commithash;
371 chdir "$ud/$dir" or die $!;
372 runcmd @git, qw(reset --hard), $upload_hash;
373 runcmd qw(sh -ec), 'dpkg-parsechangelog >>../changelogold.tmp';
374 my $oldclogp = Dpkg::Control::Hash->new();
375 $oldclogp->parse('../changelogold.tmp','previous changelog') or die;
377 version_compare_string($oldclogp->{Version}, $clogp->{Version});
379 # git upload/ is earlier vsn than archive, use archive
380 } elsif ($vcmp >= 0) {
381 print STDERR <<END or die $!;
382 Version actually in archive: $clogp->{Version} (older)
383 Last allegedly pushed/uploaded: $oldclogp->{Version} (newer or same)
384 Perhaps the upload is stuck in incoming. Using the version from git.
387 die "version in archive is same as version in git".
388 " to-be-uploaded (upload/) branch but archive".
389 " version hash no commit hash?!\n";
391 chdir '../../../..' or die $!;
397 sub ensure_we_have_orig () {
398 foreach my $f (dsc_files()) {
399 next unless is_orig_file($f);
401 die "$f ?" unless -f _;
403 die "$f $!" unless $!==&ENOENT;
405 my $origurl = $dscurl;
406 $origurl =~ s{/[^/]+$}{};
408 die "$f ?" unless $f =~ m/^${package}_/;
409 die "$f ?" if $f =~ m#/#;
410 runcmd_ordryrun qw(sh -ec),'cd ..; exec "$@"','x',
416 return cmdoutput @git, qw(rev-parse), "$_[0]~0";
419 sub is_fast_fwd ($$) {
420 my ($ancestor,$child) = @_;
421 my $mb = cmdoutput @git, qw(merge-base), $dsc_hash, $upload_hash;
422 return rev_parse($mb) eq rev_parse($ancestor);
425 sub git_fetch_us () {
426 die "cannot dry run with fetch" if $dryrun;
427 runcmd @git, qw(fetch),access_giturl(),fetchspec();
430 sub fetch_from_archive () {
431 # ensures that lrref() is what is actually in the archive,
434 $dsc_hash = $dsc->{$ourdscfield};
435 if (defined $dsc_hash) {
436 $dsc_hash =~ m/\w+/ or die "$dsc_hash $?";
438 print "last upload to archive specified git hash\n";
440 print "last upload to archive has NO git hash\n";
444 cmdoutput_errok @git, qw(show-ref --heads), lrref();
446 die unless chomp $upload_hash;
453 if (defined $dsc_hash) {
454 die "missing git history even though dsc has hash"
457 ensure_we_have_orig();
459 $hash = generate_commit_from_dsc();
462 die "not fast forward on last upload branch!".
463 " (archive's version left in DGIT_ARCHIVE)"
464 unless is_fast_fwd($dsc_hash, $upload_hash);
466 if ($upload_hash ne $hash) {
467 my @upd_cmd = (@git, qw(update-ref -m), 'dgit fetch', lrref(), $hash);
471 dryrun_report @upd_cmd;
478 die "dry run makes no sense with clone" if $dryrun;
479 mkdir $dstdir or die "$dstdir $!";
480 chdir "$dstdir" or die "$dstdir $!";
481 runcmd @git, qw(init -q);
482 runcmd @git, qw(config), "remote.$remotename.fetch", fetchspec();
483 open H, "> .git/HEAD" or die $!;
484 print H "ref: ".lref()."\n" or die $!;
486 runcmd @git, qw(remote add), 'origin', access_giturl();
487 if (check_for_git()) {
488 print "fetching existing git history\n";
490 runcmd @git, qw(fetch origin);
492 print "starting new git history\n";
494 fetch_from_archive();
495 runcmd @git, qw(reset --hard), lrref();
496 print "ready for work in $dstdir\n";
500 if (check_for_git()) {
503 fetch_from_archive();
508 runcmd_ordryrun @git, qw(merge -m),"Merge from $suite [dgit]",
513 runcmd @git, qw(diff --quiet HEAD);
514 my $clogp = parsechangelog();
515 $package = $clogp->{Source};
516 my $dscfn = "${package}_$clogp->{Version}.dsc";
517 stat "../$dscfn" or die "$dscfn $!";
518 $dsc = parsecontrol("../$dscfn");
521 print "checking that $dscfn corresponds to HEAD\n";
522 runcmd qw(dpkg-source -x --), "../../../../$dscfn";
523 my ($tree,$dir) = mktree_in_ud_from_only_subdir();
524 chdir '../../../..' or die $!;
525 runcmd @git, qw(diff --exit-code), $tree;
527 #do fast forward check and maybe fake merge
528 # if (!is_fast_fwd(mainbranch
529 # runcmd @git, qw(fetch -p ), "$alioth_git/$package.git",
530 # map { lref($_).":".rref($_) }
532 $dsc->{$ourdscfield} = rev_parse('HEAD');
533 $dsc->save("../$dscfn.tmp") or die $!;
535 rename "../$dscfn.tmp","../$dscfn" or die "$dscfn $!";
537 print "[new .dsc left in $dscfn.tmp]\n";
540 my $pat = "../${package}_$clogp->{Version}_*.changes";
542 die "$pat ?" unless @cs==1;
543 ($changesfile) = @cs;
545 my $tag = debiantag($dsc->{Version});
546 if (!check_for_git()) {
547 create_remote_git_repo();
549 runcmd_ordryrun @git, qw(push),access_giturl(),"HEAD:".rrref();
551 my @tag_cmd = (@git, qw(tag -s -m),
552 "Release $dsc->{Version} for $suite [dgit]");
553 push @tag_cmd, qw(-u),$keyid if defined $keyid;
555 runcmd_ordryrun @tag_cmd;
556 my @debsign_cmd = @debsign;
557 push @debsign_cmd, "-k$keyid" if defined $keyid;
558 push @debsign_cmd, $changesfile;
559 runcmd_ordryrun @debsign_cmd;
561 runcmd_ordryrun @git, qw(push),access_giturl(),"refs/tags/$tag";
562 my $host = access_cfg('upload-host');
563 my @hostarg = defined($host) ? ($host,) : ();
564 runcmd_ordryrun @dput, @hostarg, $changesfile;
569 die if defined $package;
572 } elsif (@ARGV==2 && $ARGV[1] =~ m#^\w#) {
573 ($package,$suite) = @ARGV;
574 } elsif (@ARGV==2 && $ARGV[1] =~ m#^[./]#) {
575 ($package,$dstdir) = @ARGV;
577 ($package,$suite,$dstdir) = @ARGV;
581 $dstdir ||= "$package";
586 my $branch = cmdoutput_errok @git, qw(symbolic-ref HEAD);
588 if ($branch =~ m#$lbranch_re#o) {
595 sub fetchpullargs () {
596 if (!defined $package) {
597 my $sourcep = parsecontrol('debian/control');
598 $package = $sourcep->{Source};
601 $suite = branchsuite();
603 my $clogp = parsechangelog();
604 $suite = $clogp->{Distribution};
606 canonicalise_suite();
607 print "fetching from suite $suite\n";
610 canonicalise_suite();
627 die if defined $package;
628 my $clogp = parsechangelog();
629 $package = $clogp->{Source};
631 $suite = $clogp->{Distribution};
632 canonicalise_suite();
640 die if defined $package;
641 my $clogp = parsechangelog();
642 $suite = $clogp->{Distribution};
643 $package = $clogp->{Source};
644 canonicalise_suite();
646 qw(git-buildpackage -us -uc --git-no-sign-tags),
647 "--git-debian-branch=".lbranch(),
654 last unless $ARGV[0] =~ m/^-/;
658 if (m/^--dry-run$/) {
660 } elsif (m/^--no-sign$/) {
662 } elsif (m/^--(\w+)=(.*)/s && ($om = $opts_opt_map{$1})) {
664 } elsif (m/^--(\w+):(.*)/s && ($om = $opts_opt_map{$1})) {
674 open DEBUG, ">&STDERR" or die $!;
676 } elsif (s/^-c(.*=.*)//s) {
678 } elsif (s/^-C(.*)//s) {
680 } elsif (s/^-k(.*)//s) {
692 my $cmd = shift @ARGV;
695 { no strict qw(refs); &{"cmd_$cmd"}(); }