5 # dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --ssh
6 # dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --cron
8 # --repos=GIT-REPOS-DIR default DISTRO-DIR/repos/
9 # --suites=SUITES-FILE default DISTRO-DIR/suites
10 # --policy-hook=POLICY-HOOK default DISTRO-DIR/policy-hook
11 # --dgit-live=DGIT-LIVE-DIR default DISTRO-DIR/dgit-live
12 # (DISTRO-DIR is not used other than as default and to pass to policy hook)
14 # .../dgit-repos-server --pre-receive-hook PACKAGE
16 # Invoked as the ssh restricted command
18 # Works like git-receive-pack
20 # SUITES is the name of a file which lists the permissible suites
21 # one per line (#-comments and blank lines ignored)
23 # AUTH-SPEC is a :-separated list of
24 # KEYRING.GPG,AUTH-SPEC
25 # where AUTH-SPEC is one of
28 # (With --cron AUTH-SPEC is not used and may be the empty string.)
31 $SIG{__WARN__} = sub { die $_[0]; };
33 # DGIT-REPOS-DIR contains:
34 # git tree (or other object) lock (in acquisition order, outer first)
36 # _tmp/PACKAGE_prospective ! } SAME.lock, held during receive-pack
38 # _tmp/PACKAGE_incoming$$ ! } SAME.lock, held during receive-pack
39 # _tmp/PACKAGE_incoming$$_fresh ! }
41 # PACKAGE.git } PACKAGE.git.lock
42 # PACKAGE_garbage } (also covers executions of
43 # PACKAGE_garbage-old } policy hook script for PACKAGE)
44 # PACKAGE_garbage-tmp }
45 # policy* } (for policy hook script, covered by
46 # } lock only when invoked for a package)
48 # leaf locks, held during brief operaton only:
53 # _template } SAME.lock
55 # locks marked ! may be held during client data transfer
57 # What we do on push is this:
58 # - extract the destination repo name
59 # - make a hardlink clone of the destination repo
60 # - provide the destination with a stunt pre-receive hook
61 # - run actual git-receive-pack with that new destination
62 # as a result of this the stunt pre-receive hook runs; it does this:
63 # + understand what refs we are allegedly updating and
64 # check some correspondences:
65 # * we are updating only refs/tags/debian/* and refs/dgit/*
66 # * and only one of each
67 # * and the tag does not already exist
69 # * recover the suite name from the destination refs/dgit/ ref
70 # + disassemble the signed tag into its various fields and signature
72 # * parsing the first line of the tag message to recover
73 # the package name, version and suite
74 # * checking that the package name corresponds to the dest repo name
75 # * checking that the suite name is as recovered above
76 # + verify the signature on the signed tag
77 # and if necessary check that the keyid and package are listed in dm.txt
78 # + check various correspondences:
79 # * the signed tag must refer to a commit
80 # * the signed tag commit must be the refs/dgit value
81 # * the name in the signed tag must correspond to its ref name
82 # * the tag name must be debian/<version> (massaged as needed)
83 # * the suite is one of those permitted
84 # * the signed tag has a suitable name
85 # * run the "push" policy hook
86 # * replay prevention for --deliberately-not-fast-forward
87 # * check the commit is a fast forward
88 # * handle a request from the policy hook for a fresh repo
89 # + push the signed tag and new dgit branch to the actual repo
91 # If the destination repo does not already exist, we need to make
92 # sure that we create it reasonably atomically, and also that
93 # we don't every have a destination repo containing no refs at all
94 # (because such a thing causes git-fetch-pack to barf). So then we
95 # do as above, except:
96 # - before starting, we take out our own lock for the destination repo
97 # - we create a prospective new destination repo by making a copy
99 # - we use the prospective new destination repo instead of the
100 # actual new destination repo (since the latter doesn't exist)
101 # - after git-receive-pack exits, we
102 # + check that the prospective repo contains a tag and head
103 # + rename the prospective destination repo into place
106 # - We are crash-only
107 # - Temporary working trees and their locks are cleaned up
108 # opportunistically by a program which tries to take each lock and
109 # if successful deletes both the tree and the lockfile
110 # - Prospective working trees and their locks are cleaned up by
111 # a program which tries to take each lock and if successful
112 # deletes any prospective working tree and the lock (but not
113 # of course any actual tree)
114 # - It is forbidden to _remove_ the lockfile without removing
115 # the corresponding temporary tree, as the lockfile is also
116 # a stampfile whose presence indicates that there may be
119 # Policy hook script is invoked like this:
120 # POLICY-HOOK-SCRIPT DISTRO DGIT-REPOS-DIR DGIT-LIVE-DIR DISTRO-DIR ACTION...
122 # POLICY-HOOK-SCRIPT ... check-list [...]
123 # POLICY-HOOK-SCRIPT ... check-package PACKAGE [...]
124 # POLICY-HOOK-SCRIPT ... push PACKAGE \
125 # VERSION SUITE TAGNAME DELIBERATELIES [...]
126 # POLICY-HOOK-SCRIPT ... push-confirm PACKAGE \
127 # VERSION SUITE TAGNAME DELIBERATELIES FRESH-REPO|'' [...]
129 # Exit status is a bitmask. Bit weight constants are defined in Dgit.pm.
131 # suppress dgit-repos-server's fast-forward check ("push" only)
133 # blow away repo right away (ie, as if before push or fetch)
134 # ("check-package" and "push" only)
135 # any unexpected bits mean failure, and then known set bits are ignored
136 # if no unexpected bits set, operation continues (subject to meaning
137 # of any expected bits set). So, eg, exit 0 means "continue normally"
138 # and would be appropriate for an unknown action.
140 # cwd for push and push-confirm is a temporary repo where the
141 # to-be-pushed objects have been received; TAGNAME is the
144 # FRESH-REPO is '' iff the repo for this package already existed, or
145 # the pathname of the newly-created repo which will be renamed into
146 # place if everything goes well. (NB that this is generally not the
147 # same repo as the cwd, because the objects are first received into a
148 # temporary repo so they can be examined.)
150 # if push requested FRESHREPO, push-confirm happens in said fresh repo
151 # and FRESH-REPO is guaranteed not to be ''.
153 # policy hook for a particular package will be invoked only once at
154 # a time - (see comments about DGIT-REPOS-DIR, above)
156 # check-list and check-package are invoked via the --cron option.
157 # First, without any locking, check-list is called. It should produce
158 # a list of package names (one per line). Then check-package will be
159 # invoked for each named package, in each case after taking an
162 # If policy hook wants to run dgit (or something else in the dgit
163 # package), it should use DGIT-LIVE-DIR/dgit (etc.)
167 use Fcntl qw(:flock);
168 use File::Path qw(rmtree);
169 use File::Temp qw(tempfile);
171 use Debian::Dgit qw(:DEFAULT :policyflags);
192 #----- utilities -----
194 sub realdestrepo () { "$dgitrepos/$package.git"; }
196 sub acquirelock ($$) {
197 my ($lock, $must) = @_;
199 printdebug sprintf "locking %s %d\n", $lock, $must;
202 $fh = new IO::File $lock, ">" or die "open $lock: $!";
203 my $ok = flock $fh, $must ? LOCK_EX : (LOCK_EX|LOCK_NB);
205 die "flock $lock: $!" if $must;
206 printdebug " locking $lock failed\n";
209 next unless stat_exists $lock;
210 my $want = (stat _)[1];
212 my $got = (stat _)[1];
213 last if $got == $want;
218 sub acquirermtree ($$) {
219 my ($tree, $must) = @_;
220 my $fh = acquirelock("$tree.lock", $must);
228 sub locksometree ($) {
230 acquirelock("$tree.lock", 1);
233 sub lockrealtree () {
234 locksometree(realdestrepo);
238 my $tmpdir = "$dgitrepos/_tmp";
239 return if mkdir $tmpdir;
240 return if $! == EEXIST;
244 sub recorderror ($) {
246 my $w = $ENV{'DGIT_DRS_WORK'}; # we are in stunthook
249 open ERR, ">", "$w/drs-error" or die $!;
250 print ERR $why, "\n" or die $!;
259 recorderror "reject: $why";
260 die "dgit-repos-server: reject: $why\n";
267 die (shellquote @_)." $? $!" if $r;
271 my ($policyallowbits, @polargs) = @_;
272 # => ($exitstatuspolicybitmap);
273 die if $policyallowbits & ~0x3e;
274 my @cmd = ($policyhook,$distro,$dgitrepos,$dgitlive,$distrodir,@polargs);
277 die "system: $!" if $r < 0;
278 die "dgit-repos-server: policy hook failed (or rejected) ($?)\n"
279 if $r & ~($policyallowbits << 8);
280 printdebug sprintf "hook => %#x\n", $r;
284 sub mkemptyrepo ($$) {
285 my ($dir,$sharedperm) = @_;
286 runcmd qw(git init --bare --quiet), "--shared=$sharedperm", $dir;
289 sub mkrepo_fromtemplate ($) {
291 my $template = "$dgitrepos/_template";
292 locksometree($template);
293 printdebug "copy template $template -> $dir\n";
294 my $r = system qw(cp -a --), $template, $dir;
295 !$r or die "create new repo $dir failed: $r $!";
298 sub movetogarbage () {
299 # realdestrepo must have been locked
300 my $garbagerepo = "$dgitrepos/${package}_garbage";
301 # We arrange to always keep at least one old tree, for anti-rewind
302 # purposes (and, I guess, recovery from mistakes). This is either
303 # $garbage or $garbage-old.
304 if (stat_exists "$garbagerepo") {
305 printdebug "movetogarbage: rmtree $garbagerepo-tmp\n";
306 rmtree "$garbagerepo-tmp";
307 if (rename "$garbagerepo-old", "$garbagerepo-tmp") {
308 printdebug "movetogarbage: $garbagerepo-old -> -tmp, rmtree\n";
309 rmtree "$garbagerepo-tmp";
311 die "$garbagerepo $!" unless $!==ENOENT;
312 printdebug "movetogarbage: $garbagerepo-old -> -tmp\n";
314 printdebug "movetogarbage: $garbagerepo -> -old\n";
315 rename "$garbagerepo", "$garbagerepo-old" or die "$garbagerepo $!";
317 my $real = realdestrepo;
318 printdebug "movetogarbage: $real -> $garbagerepo\n";
319 rename $real, $garbagerepo
321 or die "$garbagerepo $!";
324 sub policy_checkpackage () {
325 my $lfh = lockrealtree();
327 $policy = policyhook(FRESHREPO,'check-package',$package);
328 if ($policy & FRESHREPO) {
335 #----- git-receive-pack -----
337 sub fixmissing__git_receive_pack () {
339 $destrepo = "$dgitrepos/_tmp/${package}_prospective";
340 acquirermtree($destrepo, 1);
341 mkrepo_fromtemplate($destrepo);
344 sub makeworkingclone () {
346 $workrepo = "$dgitrepos/_tmp/${package}_incoming$$";
347 acquirermtree($workrepo, 1);
348 my $lfh = lockrealtree();
349 runcmd qw(git clone -l -q --mirror), $destrepo, $workrepo;
351 rmtree "${workrepo}_fresh";
354 sub setupstunthook () {
355 my $prerecv = "$workrepo/hooks/pre-receive";
356 my $fh = new IO::File $prerecv, O_WRONLY|O_CREAT|O_TRUNC, 0777
357 or die "$prerecv: $!";
358 print $fh <<END or die "$prerecv: $!";
361 exec $0 --pre-receive-hook $package
363 close $fh or die "$prerecv: $!";
364 $ENV{'DGIT_DRS_WORK'}= $workrepo;
365 $ENV{'DGIT_DRS_DEST'}= $destrepo;
366 printdebug " stunt hook set up $prerecv\n";
369 sub dealwithfreshrepo () {
370 my $freshrepo = "${workrepo}_fresh";
371 return unless stat_exists $freshrepo;
372 $destrepo = $freshrepo;
375 sub maybeinstallprospective () {
376 return if $destrepo eq realdestrepo;
378 if (open REJ, "<", "$workrepo/drs-error") {
381 REJ->error and die $!;
385 $!==&ENOENT or die $!;
388 printdebug " show-ref ($destrepo) ...\n";
390 my $child = open SR, "-|";
391 defined $child or die $!;
393 chdir $destrepo or die $!;
394 exec qw(git show-ref);
397 my %got = qw(tag 0 head 0);
400 printdebug " show-refs| $_\n";
401 s/^\S*[1-9a-f]\S* (\S+)$/$1/ or die;
403 m{^refs/tags/} ? 'tag' :
404 m{^refs/dgit/} ? 'head' :
408 $!=0; $?=0; close SR or $?==256 or die "$? $!";
410 printdebug "installprospective ?\n";
411 die Dumper(\%got)." -- missing refs in new repo"
412 if grep { !$_ } values %got;
416 if ($destrepo eq "${workrepo}_fresh") {
420 printdebug "install $destrepo => ".realdestrepo."\n";
421 rename $destrepo, realdestrepo or die $!;
422 remove "$destrepo.lock" or die $!;
425 sub main__git_receive_pack () {
428 runcmd qw(git receive-pack), $workrepo;
430 maybeinstallprospective();
433 #----- stunt post-receive hook -----
435 our ($tagname, $tagval, $suite, $oldcommit, $commit);
436 our ($version, %tagh);
439 printdebug " updates ...\n";
442 printdebug " upd.| $_\n";
443 m/^(\S+) (\S+) (\S+)$/ or die "$_ ?";
444 my ($old, $sha1, $refname) = ($1, $2, $3);
445 if ($refname =~ m{^refs/tags/(?=debian/)}) {
446 reject "pushing multiple tags!" if defined $tagname;
449 reject "tag $tagname already exists -".
450 " not replacing previously-pushed version"
452 } elsif ($refname =~ m{^refs/dgit/}) {
453 reject "pushing multiple heads!" if defined $suite;
458 reject "pushing unexpected ref!";
461 STDIN->error and die $!;
463 reject "push is missing tag ref update" unless defined $tagname;
464 reject "push is missing head ref update" unless defined $suite;
465 printdebug " updates ok.\n";
469 printdebug " parsetag...\n";
470 open PT, ">dgit-tmp/plaintext" or die $!;
471 open DS, ">dgit-tmp/plaintext.asc" or die $!;
472 open T, "-|", qw(git cat-file tag), $tagval or die $!;
474 $!=0; $_=<T>; defined or die $!;
476 if (m/^(\S+) (.*)/) {
477 push @{ $tagh{$1} }, $2;
484 $!=0; $_=<T>; defined or die $!;
485 m/^($package_re) release (\S+) for \S+ \((\S+)\) \[dgit\]$/ or
486 reject "tag message not in expected format";
488 die unless $1 eq $package;
490 die "$3 != $suite " unless $3 eq $suite;
494 print PT $copyl or die $!;
495 $!=0; $_=<T>; defined or die "missing signature? $!";
497 if (m/^\[dgit ([^"].*)\]$/) { # [dgit "something"] is for future
500 if (s/^distro\=(\S+) //) {
501 die "$1 != $distro" unless $1 eq $distro;
502 } elsif (s/^(--deliberately-$package_re) //) {
503 push @deliberatelies, $1;
504 } elsif (s/^supersede:(\S+)=(\w+) //) {
505 die "supersede $1 twice" if defined $supersedes{$1};
506 $supersedes{$1} = $2;
507 } elsif (s/^[-+.=0-9a-z]\S* //) {
509 die "unknown dgit info in tag ($_)";
514 last if m/^-----BEGIN PGP/;
525 printdebug " parsetag ok.\n";
528 sub checksig_keyring ($) {
529 my ($keyringfile) = @_;
530 # returns primary-keyid if signed by a key in this keyring
532 # or dies on other errors
536 printdebug " checksig keyring $keyringfile...\n";
538 our @cmd = (qw(gpgv --status-fd=1 --keyring),
540 qw(dgit-tmp/plaintext.asc dgit-tmp/plaintext));
547 next unless s/^\[GNUPG:\] //;
549 printdebug " checksig| $_\n";
550 my @l = split / /, $_;
551 if ($l[0] eq 'NO_PUBKEY') {
553 } elsif ($l[0] eq 'VALIDSIG') {
555 $sigtype eq '00' or reject "signature is not of type 00!";
557 die unless defined $ok;
563 printdebug sprintf " checksig ok=%d\n", !!$ok;
568 sub dm_txt_check ($$) {
569 my ($keyid, $dmtxtfn) = @_;
570 printdebug " dm_txt_check $keyid $dmtxtfn\n";
571 open DT, '<', $dmtxtfn or die "$dmtxtfn $!";
573 m/^fingerprint:\s+$keyid$/oi
575 if (s/^allow:/ /i..0) {
578 or reject "key $keyid missing Allow section in permissions!";
583 or reject "package $package not allowed for key $keyid";
588 printdebug " dm_txt_check allow| $_\n";
589 foreach my $p (split /\s+/) {
590 if ($p eq $package) {
592 printdebug " dm_txt_check ok\n";
597 DT->error and die $!;
599 reject "key $keyid not in permissions list although in keyring!";
603 foreach my $kas (split /:/, $keyrings) {
604 printdebug "verifytag $kas...\n";
605 $kas =~ s/^([^,]+),// or die;
606 my $keyid = checksig_keyring $1;
607 if (defined $keyid) {
608 if ($kas =~ m/^a$/) {
609 printdebug "verifytag a ok\n";
611 } elsif ($kas =~ m/^m([^,]+)$/) {
612 dm_txt_check($keyid, $1);
613 printdebug "verifytag m ok\n";
620 reject "key not found in keyrings";
624 printdebug "checksuite ($suitesfile)\n";
625 open SUITES, "<", $suitesfile or die $!;
631 return if $_ eq $suite;
633 die $! if SUITES->error;
634 reject "unknown suite";
637 sub checktagnoreplay () {
638 # We check that the signed tag mentions the name and value of
639 # (a) in the case of FRESHREPO all tags in the repo;
640 # (b) in the case of just NOFFCHECK all tags referring to
641 # the current head for the suite (there must be at least one).
642 # This prevents a replay attack using an earlier signed tag.
643 return unless $policy & (FRESHREPO|NOFFCHECK);
645 my $garbagerepo = "$dgitrepos/${package}_garbage";
649 foreach my $garb ("$garbagerepo", "$garbagerepo-old") {
650 if (stat_exists $garb) {
651 $ENV{GIT_DIR} = $garb;
655 if (!defined $ENV{GIT_DIR}) {
656 # Nothing to overwrite so the FRESHREPO and NOFFCHECK were
657 # pointless. Oh well.
658 printdebug "checktagnoreplay - no garbage, ok\n";
663 if (!($policy & FRESHREPO)) {
664 my $branch = server_branch($suite);
666 `git for-each-ref --format='%(objectname)' '[r]efs/$branch'`;
667 defined or die "$branch $? $!";
668 $? and die "$branch $?";
670 # No such branch - NOFFCHECK was unnecessary. Oh well.
671 printdebug "checktagnoreplay - not FRESHREPO, new branch, ok\n";
674 m/^(\w+)\n$/ or die "$branch $_ ?";
676 printdebug "checktagnoreplay - not FRESHREPO,".
677 " checking for overwriting refs/$branch=$onlyreferring\n";
682 git_for_each_tag_referring($onlyreferring, sub {
683 my ($objid,$fullrefname,$tagname) = @_;
684 printdebug "checktagnoreplay - overwriting $fullrefname=$objid\n";
685 my $supers = $supersedes{$fullrefname};
686 if (!defined $supers) {
687 push @problems, "does not supersede $fullrefname";
688 } elsif ($supers ne $objid) {
690 "supersedes $fullrefname=$supers but previously $fullrefname=$objid";
697 reject "replay attack prevention check failed:".
698 " signed tag for $version: ".
699 join("; ", @problems).
702 printdebug "checktagnoreply - all ok\n"
707 my $vals = $tagh{$tag};
708 reject "missing header $tag in signed tag object" unless $vals;
709 reject "multiple headers $tag in signed tag object" unless @$vals == 1;
714 printdebug "checks\n";
716 tagh1('type') eq 'commit' or reject "tag refers to wrong kind of object";
717 tagh1('object') eq $commit or reject "tag refers to wrong commit";
718 tagh1('tag') eq $tagname or reject "tag name in tag is wrong";
723 printdebug "translated version $v\n";
724 $tagname eq "debian/$v" or die;
728 my @policy_args = ($package,$version,$suite,$tagname,
729 join(",",@deliberatelies));
730 $policy = policyhook(NOFFCHECK|FRESHREPO, 'push', @policy_args);
735 # check that our ref is being fast-forwarded
736 printdebug "oldcommit $oldcommit\n";
737 if (!($policy & NOFFCHECK) && $oldcommit =~ m/[^0]/) {
738 $?=0; $!=0; my $mb = `git merge-base $commit $oldcommit`;
740 $mb eq $oldcommit or reject "not fast forward on dgit branch";
743 if ($policy & FRESHREPO) {
744 # This is troublesome. We have been asked by the policy hook
745 # to receive the push into a fresh repo. But of course we
746 # have actually already mostly received the push into the working
747 # repo. (This is unavoidable because the instruction to use a new
748 # repo comes ultimately from the signed tag for the dgit push,
749 # which has to have been received into some repo.)
751 # So what we do is generate a fresh working repo right now and
752 # push the head and tag into it. The presence of this fresh
753 # working repo is detected by the parent, which responds by
754 # making a fresh master repo from the template.
756 $destrepo = "${workrepo}_fresh"; # workrepo lock covers
757 mkrepo_fromtemplate $destrepo;
760 my $willinstall = ($destrepo eq realdestrepo ? '' : $destrepo);
761 policyhook(0, 'push-confirm', @policy_args, $willinstall);
765 my @cmd = (qw(git send-pack), $destrepo);
766 push @cmd, qw(--force) if $policy & NOFFCHECK;
767 push @cmd, "$commit:refs/dgit/$suite",
768 "$tagval:refs/tags/$tagname";
772 !$r or die "onward push to $destrepo failed: $r $!";
776 printdebug "stunthook in $workrepo\n";
777 chdir $workrepo or die "chdir $workrepo: $!";
778 mkdir "dgit-tmp" or $!==EEXIST or die $!;
784 printdebug "stunthook done.\n";
787 #----- git-upload-pack -----
789 sub fixmissing__git_upload_pack () {
790 $destrepo = "$dgitrepos/_empty";
791 my $lfh = locksometree($destrepo);
792 return if stat_exists $destrepo;
793 rmtree "$destrepo.new";
794 mkemptyrepo "$destrepo.new", "0644";
795 rename "$destrepo.new", $destrepo or die $!;
796 unlink "$destrepo.lock" or die $!;
800 sub main__git_upload_pack () {
801 my $lfh = locksometree($destrepo);
802 printdebug "git-upload-pack in $destrepo\n";
803 chdir $destrepo or die "$destrepo: $!";
805 runcmd qw(git upload-pack), ".";
808 #----- arg parsing and main program -----
818 # keys are used for DGIT_DRS_XXX too
819 'repos' => \$dgitrepos,
820 'suites' => \$suitesfile,
821 'policy-hook' => \$policyhook,
822 'dgit-live' => \$dgitlive,
825 our @hookenvs = qw(distro suitesfile policyhook
826 dgitlive keyrings dgitrepos distrodir);
828 # workrepo and destrepo handled ad-hoc
833 my $cmd = $ENV{'SSH_ORIGINAL_COMMAND'};
843 or reject "command string not understood";
849 my $mainfunc = $main::{"main__$funcn"};
851 reject "unknown method" unless $mainfunc;
853 policy_checkpackage();
855 if (stat_exists realdestrepo) {
856 $destrepo = realdestrepo;
858 printdebug " fixmissing $funcn\n";
859 my $fixfunc = $main::{"fixmissing__$funcn"};
863 printdebug " running main $funcn\n";
870 my $listfh = tempfile();
871 open STDOUT, ">&", $listfh or die $!;
872 policyhook(0,'check-list');
873 open STDOUT, ">&STDERR" or die $!;
875 seek $listfh, 0, 0 or die $!;
880 die unless m/^($package_re)$/;
883 policy_checkpackage();
885 die $! if $listfh->error;
888 sub parseargsdispatch () {
891 delete $ENV{'GIT_DIR'}; # if not run via ssh, our parent git process
892 delete $ENV{'GIT_PREFIX'}; # sets these and they mess things up
894 if ($ENV{'DGIT_DRS_DEBUG'}) {
898 if ($ARGV[0] eq '--pre-receive-hook') {
901 printdebug "in stunthook ".(shellquote @ARGV)."\n";
902 foreach my $k (sort keys %ENV) {
903 printdebug "$k=$ENV{$k}\n" if $k =~ m/^DGIT/;
908 $package = shift @ARGV;
909 ${ $main::{$_} } = $ENV{"DGIT_DRS_\U$_"} foreach @hookenvs;
910 defined($workrepo = $ENV{'DGIT_DRS_WORK'}) or die;
911 defined($destrepo = $ENV{'DGIT_DRS_DEST'}) or die;
912 open STDOUT, ">&STDERR" or die $!;
917 recorderror "$@" or die;
924 $distrodir = argval();
925 $keyrings = argval();
927 foreach my $dk (keys %indistrodir) {
928 ${ $indistrodir{$dk} } = "$distrodir/$dk";
931 while (@ARGV && $ARGV[0] =~ m/^--([-0-9a-z]+)=/ && $indistrodir{$1}) {
932 ${ $indistrodir{$1} } = $'; #';
936 $ENV{"DGIT_DRS_\U$_"} = ${ $main::{$_} } foreach @hookenvs;
940 my $mode = shift @ARGV;
941 die unless $mode =~ m/^--(\w+)$/;
942 my $fn = ${*::}{"mode_$1"};
948 while (my $fh = pop @lockfhs) { close $fh; }
953 if (!chdir "$dgitrepos/_tmp") {
954 $!==ENOENT or die $!;
957 foreach my $lf (<*.lock>) {
959 $tree =~ s/\.lock$//;
960 next unless acquirermtree($tree, 0);
961 remove $lf or warn $!;