4 # Jérémie Nikaes <jeremie.nikaes@ensimag.imag.fr>
5 # Arnaud Lacurie <arnaud.lacurie@ensimag.imag.fr>
6 # Claire Fousse <claire.fousse@ensimag.imag.fr>
7 # David Amouyal <david.amouyal@ensimag.imag.fr>
8 # Matthieu Moy <matthieu.moy@grenoble-inp.fr>
9 # License: GPL v2 or later
11 # Gateway between Git and MediaWiki.
12 # https://github.com/Bibzball/Git-Mediawiki/wiki
16 # - Several strategies are provided to fetch modifications from the
17 # wiki, but no automatic heuristics is provided, the user has
18 # to understand and chose which strategy is appropriate for him.
20 # - Git renames could be turned into MediaWiki renames (see TODO
23 # - No way to import "one page, and all pages included in it"
25 # - Multiple remote MediaWikis have not been very well tested.
29 use DateTime
::Format
::ISO8601
;
31 # By default, use UTF-8 to communicate with Git and the user
32 binmode STDERR
, ":utf8";
33 binmode STDOUT
, ":utf8";
40 # Mediawiki filenames can contain forward slashes. This variable decides by which pattern they should be replaced
41 use constant SLASH_REPLACEMENT
=> "%2F";
43 # It's not always possible to delete pages (may require some
44 # priviledges). Deleted pages are replaced with this content.
45 use constant DELETED_CONTENT
=> "[[Category:Deleted]]\n";
47 # It's not possible to create empty pages. New empty files in Git are
48 # sent with this content instead.
49 use constant EMPTY_CONTENT
=> "<!-- empty page -->\n";
51 # used to reflect file creation or deletion in diff.
52 use constant NULL_SHA1
=> "0000000000000000000000000000000000000000";
54 # Used on Git's side to reflect empty edit messages on the wiki
55 use constant EMPTY_MESSAGE
=> '*Empty MediaWiki Message*';
57 my $remotename = $ARGV[0];
60 # Accept both space-separated and multiple keys in config file.
61 # Spaces should be written as _ anyway because we'll use chomp.
62 my @tracked_pages = split(/[ \n]/, run_git
("config --get-all remote.". $remotename .".pages"));
63 chomp(@tracked_pages);
65 # Just like @tracked_pages, but for MediaWiki categories.
66 my @tracked_categories = split(/[ \n]/, run_git
("config --get-all remote.". $remotename .".categories"));
67 chomp(@tracked_categories);
69 # Import media files too.
70 my $import_media = run_git
("config --get --bool remote.". $remotename .".mediaimport");
72 $import_media = ($import_media eq "true");
74 my $wiki_login = run_git
("config --get remote.". $remotename .".mwLogin");
75 # Note: mwPassword is discourraged. Use the credential system instead.
76 my $wiki_passwd = run_git
("config --get remote.". $remotename .".mwPassword");
77 my $wiki_domain = run_git
("config --get remote.". $remotename .".mwDomain");
82 # Import only last revisions (both for clone and fetch)
83 my $shallow_import = run_git
("config --get --bool remote.". $remotename .".shallow");
84 chomp($shallow_import);
85 $shallow_import = ($shallow_import eq "true");
87 # Fetch (clone and pull) by revisions instead of by pages. This behavior
88 # is more efficient when we have a wiki with lots of pages and we fetch
89 # the revisions quite often so that they concern only few pages.
91 # - by_rev: perform one query per new revision on the remote wiki
92 # - by_page: query each tracked page for new revision
93 my $fetch_strategy = run_git
("config --get remote.$remotename.fetchStrategy");
94 unless ($fetch_strategy) {
95 $fetch_strategy = run_git
("config --get mediawiki.fetchStrategy");
97 chomp($fetch_strategy);
98 unless ($fetch_strategy) {
99 $fetch_strategy = "by_page";
102 # Dumb push: don't update notes and mediawiki ref to reflect the last push.
104 # Configurable with mediawiki.dumbPush, or per-remote with
105 # remote.<remotename>.dumbPush.
107 # This means the user will have to re-import the just-pushed
108 # revisions. On the other hand, this means that the Git revisions
109 # corresponding to MediaWiki revisions are all imported from the wiki,
110 # regardless of whether they were initially created in Git or from the
111 # web interface, hence all users will get the same history (i.e. if
112 # the push from Git to MediaWiki loses some information, everybody
113 # will get the history with information lost). If the import is
114 # deterministic, this means everybody gets the same sha1 for each
115 # MediaWiki revision.
116 my $dumb_push = run_git
("config --get --bool remote.$remotename.dumbPush");
117 unless ($dumb_push) {
118 $dumb_push = run_git
("config --get --bool mediawiki.dumbPush");
121 $dumb_push = ($dumb_push eq "true");
123 my $wiki_name = $url;
124 $wiki_name =~ s/[^\/]*:\/\
///;
125 # If URL is like http://user:password@example.com/, we clearly don't
126 # want the password in $wiki_name. While we're there, also remove user
127 # and '@' sign, to avoid author like MWUser@HTTPUser@host.com
128 $wiki_name =~ s/^.*@//;
136 if (defined($cmd[0])) {
138 if ($cmd[0] eq "capabilities") {
139 die("Too many arguments for capabilities") unless (!defined($cmd[1]));
141 } elsif ($cmd[0] eq "list") {
142 die("Too many arguments for list") unless (!defined($cmd[2]));
144 } elsif ($cmd[0] eq "import") {
145 die("Invalid arguments for import") unless ($cmd[1] ne "" && !defined($cmd[2]));
147 } elsif ($cmd[0] eq "option") {
148 die("Too many arguments for option") unless ($cmd[1] ne "" && $cmd[2] ne "" && !defined($cmd[3]));
149 mw_option
($cmd[1],$cmd[2]);
150 } elsif ($cmd[0] eq "push") {
153 print STDERR
"Unknown command. Aborting...\n";
157 # blank line: we should terminate
161 BEGIN { $| = 1 } # flush STDOUT, to make sure the previous
162 # command is fully processed.
165 ########################## Functions ##############################
167 ## credential API management (generic functions)
169 sub credential_from_url
{
171 my $parsed = URI
->new($url);
174 if ($parsed->scheme) {
175 $credential{protocol
} = $parsed->scheme;
178 $credential{host
} = $parsed->host;
181 $credential{path
} = $parsed->path;
183 if ($parsed->userinfo) {
184 if ($parsed->userinfo =~ /([^:]*):(.*)/) {
185 $credential{username
} = $1;
186 $credential{password
} = $2;
188 $credential{username
} = $parsed->userinfo;
195 sub credential_read
{
200 my ($key, $value) = /([^=]*)=(.*)/;
201 if (not defined $key) {
202 die "ERROR receiving response from git credential $op:\n$_\n";
204 $credential{$key} = $value;
209 sub credential_write
{
210 my $credential = shift;
212 while (my ($key, $value) = each(%$credential) ) {
214 print $writer "$key=$value\n";
221 my $credential = shift;
222 my $pid = open2
(my $reader, my $writer, "git credential $op");
223 credential_write
($credential, $writer);
228 %$credential = credential_read
($reader, $op);
231 die "ERROR while running git credential $op:\n$_";
236 my $child_exit_status = $?
>> 8;
237 if ($child_exit_status != 0) {
238 die "'git credential $op' failed with code $child_exit_status.";
242 # MediaWiki API instance, created lazily.
245 sub mw_connect_maybe
{
249 $mediawiki = MediaWiki
::API
->new;
250 $mediawiki->{config
}->{api_url
} = "$url/api.php";
252 my %credential = credential_from_url
($url);
253 $credential{username
} = $wiki_login;
254 $credential{password
} = $wiki_passwd;
255 credential_run
("fill", \
%credential);
256 my $request = {lgname
=> $credential{username
},
257 lgpassword
=> $credential{password
},
258 lgdomain
=> $wiki_domain};
259 if ($mediawiki->login($request)) {
260 credential_run
("approve", \
%credential);
261 print STDERR
"Logged in mediawiki user \"$credential{username}\".\n";
263 print STDERR
"Failed to log in mediawiki user \"$credential{username}\" on $url\n";
264 print STDERR
" (error " .
265 $mediawiki->{error
}->{code
} . ': ' .
266 $mediawiki->{error
}->{details
} . ")\n";
267 credential_run
("reject", \
%credential);
273 ## Functions for listing pages on the remote wiki
274 sub get_mw_tracked_pages
{
276 get_mw_page_list
(\
@tracked_pages, $pages);
279 sub get_mw_page_list
{
280 my $page_list = shift;
282 my @some_pages = @
$page_list;
283 while (@some_pages) {
285 if ($#some_pages < $last) {
286 $last = $#some_pages;
288 my @slice = @some_pages[0..$last];
289 get_mw_first_pages
(\
@slice, $pages);
290 @some_pages = @some_pages[51..$#some_pages];
294 sub get_mw_tracked_categories
{
296 foreach my $category (@tracked_categories) {
297 if (index($category, ':') < 0) {
298 # Mediawiki requires the Category
299 # prefix, but let's not force the user
301 $category = "Category:" . $category;
303 my $mw_pages = $mediawiki->list( {
305 list
=> 'categorymembers',
306 cmtitle
=> $category,
308 || die $mediawiki->{error
}->{code
} . ': '
309 . $mediawiki->{error
}->{details
};
310 foreach my $page (@
{$mw_pages}) {
311 $pages->{$page->{title
}} = $page;
316 sub get_mw_all_pages
{
318 # No user-provided list, get the list of pages from the API.
319 my $mw_pages = $mediawiki->list({
324 if (!defined($mw_pages)) {
325 print STDERR
"fatal: could not get the list of wiki pages.\n";
326 print STDERR
"fatal: '$url' does not appear to be a mediawiki\n";
327 print STDERR
"fatal: make sure '$url/api.php' is a valid page.\n";
330 foreach my $page (@
{$mw_pages}) {
331 $pages->{$page->{title
}} = $page;
335 # queries the wiki for a set of pages. Meant to be used within a loop
336 # querying the wiki for slices of page list.
337 sub get_mw_first_pages
{
338 my $some_pages = shift;
339 my @some_pages = @
{$some_pages};
343 # pattern 'page1|page2|...' required by the API
344 my $titles = join('|', @some_pages);
346 my $mw_pages = $mediawiki->api({
350 if (!defined($mw_pages)) {
351 print STDERR
"fatal: could not query the list of wiki pages.\n";
352 print STDERR
"fatal: '$url' does not appear to be a mediawiki\n";
353 print STDERR
"fatal: make sure '$url/api.php' is a valid page.\n";
356 while (my ($id, $page) = each(%{$mw_pages->{query
}->{pages
}})) {
358 print STDERR
"Warning: page $page->{title} not found on wiki\n";
360 $pages->{$page->{title
}} = $page;
365 # Get the list of pages to be fetched according to configuration.
369 my %pages; # hash on page titles to avoid duplicates
371 if (@tracked_pages) {
373 # The user provided a list of pages titles, but we
374 # still need to query the API to get the page IDs.
375 get_mw_tracked_pages
(\
%pages);
377 if (@tracked_categories) {
379 get_mw_tracked_categories
(\
%pages);
381 if (!$user_defined) {
382 get_mw_all_pages
(\
%pages);
385 print STDERR
"Getting media files for selected pages...\n";
387 get_linked_mediafiles
(\
%pages);
389 get_all_mediafiles
(\
%pages);
395 # usage: $out = run_git("command args");
396 # $out = run_git("command args", "raw"); # don't interpret output as UTF-8.
399 my $encoding = (shift || "encoding(UTF-8)");
400 open(my $git, "-|:$encoding", "git " . $args);
401 my $res = do { local $/; <$git> };
408 sub get_all_mediafiles
{
410 # Attach list of all pages for media files from the API,
411 # they are in a different namespace, only one namespace
412 # can be queried at the same moment
413 my $mw_pages = $mediawiki->list({
416 apnamespace
=> get_mw_namespace_id
("File"),
419 if (!defined($mw_pages)) {
420 print STDERR
"fatal: could not get the list of pages for media files.\n";
421 print STDERR
"fatal: '$url' does not appear to be a mediawiki\n";
422 print STDERR
"fatal: make sure '$url/api.php' is a valid page.\n";
425 foreach my $page (@
{$mw_pages}) {
426 $pages->{$page->{title
}} = $page;
430 sub get_linked_mediafiles
{
432 my @titles = map $_->{title
}, values(%{$pages});
434 # The query is split in small batches because of the MW API limit of
435 # the number of links to be returned (500 links max).
438 if ($#titles < $batch) {
441 my @slice = @titles[0..$batch];
443 # pattern 'page1|page2|...' required by the API
444 my $mw_titles = join('|', @slice);
446 # Media files could be included or linked from
447 # a page, get all related
450 prop
=> 'links|images',
451 titles
=> $mw_titles,
452 plnamespace
=> get_mw_namespace_id
("File"),
455 my $result = $mediawiki->api($query);
457 while (my ($id, $page) = each(%{$result->{query
}->{pages
}})) {
459 if (defined($page->{links
})) {
460 my @link_titles = map $_->{title
}, @
{$page->{links
}};
461 push(@media_titles, @link_titles);
463 if (defined($page->{images
})) {
464 my @image_titles = map $_->{title
}, @
{$page->{images
}};
465 push(@media_titles, @image_titles);
468 get_mw_page_list
(\
@media_titles, $pages);
472 @titles = @titles[($batch+1)..$#titles];
476 sub get_mw_mediafile_for_page_revision
{
477 # Name of the file on Wiki, with the prefix.
478 my $filename = shift;
479 my $timestamp = shift;
482 # Search if on a media file with given timestamp exists on
483 # MediaWiki. In that case download the file.
487 titles
=> "File:" . $filename,
488 iistart
=> $timestamp,
490 iiprop
=> 'timestamp|archivename|url',
493 my $result = $mediawiki->api($query);
495 my ($fileid, $file) = each( %{$result->{query
}->{pages
}} );
496 # If not defined it means there is no revision of the file for
498 if (defined($file->{imageinfo
})) {
499 $mediafile{title
} = $filename;
501 my $fileinfo = pop(@
{$file->{imageinfo
}});
502 $mediafile{timestamp
} = $fileinfo->{timestamp
};
503 # Mediawiki::API's download function doesn't support https URLs
504 # and can't download old versions of files.
505 print STDERR
"\tDownloading file $mediafile{title}, version $mediafile{timestamp}\n";
506 $mediafile{content
} = download_mw_mediafile
($fileinfo->{url
});
511 sub download_mw_mediafile
{
514 my $response = $mediawiki->{ua
}->get($url);
515 if ($response->code == 200) {
516 return $response->decoded_content;
518 print STDERR
"Error downloading mediafile from :\n";
519 print STDERR
"URL: $url\n";
520 print STDERR
"Server response: " . $response->code . " " . $response->message . "\n";
525 sub get_last_local_revision
{
526 # Get note regarding last mediawiki revision
527 my $note = run_git
("notes --ref=$remotename/mediawiki show refs/mediawiki/$remotename/master 2>/dev/null");
528 my @note_info = split(/ /, $note);
530 my $lastrevision_number;
531 if (!(defined($note_info[0]) && $note_info[0] eq "mediawiki_revision:")) {
532 print STDERR
"No previous mediawiki revision found";
533 $lastrevision_number = 0;
535 # Notes are formatted : mediawiki_revision: #number
536 $lastrevision_number = $note_info[1];
537 chomp($lastrevision_number);
538 print STDERR
"Last local mediawiki revision found is $lastrevision_number";
540 return $lastrevision_number;
543 # Remember the timestamp corresponding to a revision id.
546 # Get the last remote revision without taking in account which pages are
547 # tracked or not. This function makes a single request to the wiki thus
548 # avoid a loop onto all tracked pages. This is useful for the fetch-by-rev
550 sub get_last_global_remote_rev
{
555 list
=> 'recentchanges',
560 my $result = $mediawiki->api($query);
561 return $result->{query
}->{recentchanges
}[0]->{revid
};
564 # Get the last remote revision concerning the tracked pages and the tracked
566 sub get_last_remote_revision
{
569 my %pages_hash = get_mw_pages
();
570 my @pages = values(%pages_hash);
574 foreach my $page (@pages) {
575 my $id = $page->{pageid
};
580 rvprop
=> 'ids|timestamp',
584 my $result = $mediawiki->api($query);
586 my $lastrev = pop(@
{$result->{query
}->{pages
}->{$id}->{revisions
}});
588 $basetimestamps{$lastrev->{revid
}} = $lastrev->{timestamp
};
590 $max_rev_num = ($lastrev->{revid
} > $max_rev_num ?
$lastrev->{revid
} : $max_rev_num);
593 print STDERR
"Last remote revision found is $max_rev_num.\n";
597 # Clean content before sending it to MediaWiki
598 sub mediawiki_clean
{
600 my $page_created = shift;
601 # Mediawiki does not allow blank space at the end of a page and ends with a single \n.
602 # This function right trims a string and adds a \n at the end to follow this rule
604 if ($string eq "" && $page_created) {
605 # Creating empty pages is forbidden.
606 $string = EMPTY_CONTENT
;
611 # Filter applied on MediaWiki data before adding them to Git
612 sub mediawiki_smudge
{
614 if ($string eq EMPTY_CONTENT
) {
617 # This \n is important. This is due to mediawiki's way to handle end of files.
621 sub mediawiki_clean_filename
{
622 my $filename = shift;
623 $filename =~ s/@{[SLASH_REPLACEMENT]}/\//g
;
624 # [, ], |, {, and } are forbidden by MediaWiki, even URL-encoded.
625 # Do a variant of URL-encoding, i.e. looks like URL-encoding,
626 # but with _ added to prevent MediaWiki from thinking this is
627 # an actual special character.
628 $filename =~ s/[\[\]\{\}\|]/sprintf("_%%_%x", ord($&))/ge;
629 # If we use the uri escape before
630 # we should unescape here, before anything
635 sub mediawiki_smudge_filename
{
636 my $filename = shift;
637 $filename =~ s/\//@
{[SLASH_REPLACEMENT
]}/g
;
638 $filename =~ s/ /_/g;
639 # Decode forbidden characters encoded in mediawiki_clean_filename
640 $filename =~ s/_%_([0-9a-fA-F][0-9a-fA-F])/sprintf("%c", hex($1))/ge;
646 print STDOUT
"data ", bytes
::length($content), "\n", $content;
649 sub literal_data_raw
{
650 # Output possibly binary content.
652 # Avoid confusion between size in bytes and in characters
653 utf8
::downgrade
($content);
654 binmode STDOUT
, ":raw";
655 print STDOUT
"data ", bytes
::length($content), "\n", $content;
656 binmode STDOUT
, ":utf8";
659 sub mw_capabilities
{
660 # Revisions are imported to the private namespace
661 # refs/mediawiki/$remotename/ by the helper and fetched into
662 # refs/remotes/$remotename later by fetch.
663 print STDOUT
"refspec refs/heads/*:refs/mediawiki/$remotename/*\n";
664 print STDOUT
"import\n";
665 print STDOUT
"list\n";
666 print STDOUT
"push\n";
671 # MediaWiki do not have branches, we consider one branch arbitrarily
672 # called master, and HEAD pointing to it.
673 print STDOUT
"? refs/heads/master\n";
674 print STDOUT
"\@refs/heads/master HEAD\n";
679 print STDERR
"remote-helper command 'option $_[0]' not yet implemented\n";
680 print STDOUT
"unsupported\n";
683 sub fetch_mw_revisions_for_page
{
686 my $fetch_from = shift;
693 rvstartid
=> $fetch_from,
699 # Get 500 revisions at a time due to the mediawiki api limit
701 my $result = $mediawiki->api($query);
703 # Parse each of those 500 revisions
704 foreach my $revision (@
{$result->{query
}->{pages
}->{$id}->{revisions
}}) {
706 $page_rev_ids->{pageid
} = $page->{pageid
};
707 $page_rev_ids->{revid
} = $revision->{revid
};
708 push(@page_revs, $page_rev_ids);
711 last unless $result->{'query-continue'};
712 $query->{rvstartid
} = $result->{'query-continue'}->{revisions
}->{rvstartid
};
714 if ($shallow_import && @page_revs) {
715 print STDERR
" Found 1 revision (shallow import).\n";
716 @page_revs = sort {$b->{revid
} <=> $a->{revid
}} (@page_revs);
717 return $page_revs[0];
719 print STDERR
" Found ", $revnum, " revision(s).\n";
723 sub fetch_mw_revisions
{
724 my $pages = shift; my @pages = @
{$pages};
725 my $fetch_from = shift;
729 foreach my $page (@pages) {
730 my $id = $page->{pageid
};
732 print STDERR
"page $n/", scalar(@pages), ": ". $page->{title
} ."\n";
734 my @page_revs = fetch_mw_revisions_for_page
($page, $id, $fetch_from);
735 @revisions = (@page_revs, @revisions);
738 return ($n, @revisions);
741 sub import_file_revision
{
743 my %commit = %{$commit};
744 my $full_import = shift;
746 my $mediafile = shift;
749 %mediafile = %{$mediafile};
752 my $title = $commit{title
};
753 my $comment = $commit{comment
};
754 my $content = $commit{content
};
755 my $author = $commit{author
};
756 my $date = $commit{date
};
758 print STDOUT
"commit refs/mediawiki/$remotename/master\n";
759 print STDOUT
"mark :$n\n";
760 print STDOUT
"committer $author <$author\@$wiki_name> ", $date->epoch, " +0000\n";
761 literal_data
($comment);
763 # If it's not a clone, we need to know where to start from
764 if (!$full_import && $n == 1) {
765 print STDOUT
"from refs/mediawiki/$remotename/master^0\n";
767 if ($content ne DELETED_CONTENT
) {
768 print STDOUT
"M 644 inline $title.mw\n";
769 literal_data
($content);
771 print STDOUT
"M 644 inline $mediafile{title}\n";
772 literal_data_raw
($mediafile{content
});
776 print STDOUT
"D $title.mw\n";
779 # mediawiki revision number in the git note
780 if ($full_import && $n == 1) {
781 print STDOUT
"reset refs/notes/$remotename/mediawiki\n";
783 print STDOUT
"commit refs/notes/$remotename/mediawiki\n";
784 print STDOUT
"committer $author <$author\@$wiki_name> ", $date->epoch, " +0000\n";
785 literal_data
("Note added by git-mediawiki during import");
786 if (!$full_import && $n == 1) {
787 print STDOUT
"from refs/notes/$remotename/mediawiki^0\n";
789 print STDOUT
"N inline :$n\n";
790 literal_data
("mediawiki_revision: " . $commit{mw_revision
});
794 # parse a sequence of
798 # (like batch sequence of import and sequence of push statements)
804 if ($line =~ m/^$cmd (.*)$/) {
806 } elsif ($line eq "\n") {
809 die("Invalid command in a '$cmd' batch: ". $_);
815 # multiple import commands can follow each other.
816 my @refs = (shift, get_more_refs
("import"));
817 foreach my $ref (@refs) {
820 print STDOUT
"done\n";
825 # The remote helper will call "import HEAD" and
826 # "import refs/heads/master".
827 # Since HEAD is a symbolic ref to master (by convention,
828 # followed by the output of the command "list" that we gave),
829 # we don't need to do anything in this case.
830 if ($ref eq "HEAD") {
836 print STDERR
"Searching revisions...\n";
837 my $last_local = get_last_local_revision
();
838 my $fetch_from = $last_local + 1;
839 if ($fetch_from == 1) {
840 print STDERR
", fetching from beginning.\n";
842 print STDERR
", fetching from here.\n";
846 if ($fetch_strategy eq "by_rev") {
847 print STDERR
"Fetching & writing export data by revs...\n";
848 $n = mw_import_ref_by_revs
($fetch_from);
849 } elsif ($fetch_strategy eq "by_page") {
850 print STDERR
"Fetching & writing export data by pages...\n";
851 $n = mw_import_ref_by_pages
($fetch_from);
853 print STDERR
"fatal: invalid fetch strategy \"$fetch_strategy\".\n";
854 print STDERR
"Check your configuration variables remote.$remotename.fetchStrategy and mediawiki.fetchStrategy\n";
858 if ($fetch_from == 1 && $n == 0) {
859 print STDERR
"You appear to have cloned an empty MediaWiki.\n";
860 # Something has to be done remote-helper side. If nothing is done, an error is
861 # thrown saying that HEAD is refering to unknown object 0000000000000000000
862 # and the clone fails.
866 sub mw_import_ref_by_pages
{
868 my $fetch_from = shift;
869 my %pages_hash = get_mw_pages
();
870 my @pages = values(%pages_hash);
872 my ($n, @revisions) = fetch_mw_revisions
(\
@pages, $fetch_from);
874 @revisions = sort {$a->{revid
} <=> $b->{revid
}} @revisions;
875 my @revision_ids = map $_->{revid
}, @revisions;
877 return mw_import_revids
($fetch_from, \
@revision_ids, \
%pages_hash);
880 sub mw_import_ref_by_revs
{
882 my $fetch_from = shift;
883 my %pages_hash = get_mw_pages
();
885 my $last_remote = get_last_global_remote_rev
();
886 my @revision_ids = $fetch_from..$last_remote;
887 return mw_import_revids
($fetch_from, \
@revision_ids, \
%pages_hash);
890 # Import revisions given in second argument (array of integers).
891 # Only pages appearing in the third argument (hash indexed by page titles)
893 sub mw_import_revids
{
894 my $fetch_from = shift;
895 my $revision_ids = shift;
900 my $last_timestamp = 0; # Placeholer in case $rev->timestamp is undefined
902 foreach my $pagerevid (@
$revision_ids) {
903 # fetch the content of the pages
907 rvprop
=> 'content|timestamp|comment|user|ids',
908 revids
=> $pagerevid,
911 my $result = $mediawiki->api($query);
914 die "Failed to retrieve modified page for revision $pagerevid";
917 if (!defined($result->{query
}->{pages
})) {
918 die "Invalid revision $pagerevid.";
921 my @result_pages = values(%{$result->{query
}->{pages
}});
922 my $result_page = $result_pages[0];
923 my $rev = $result_pages[0]->{revisions
}->[0];
925 # Count page even if we skip it, since we display
926 # $n/$total and $total includes skipped pages.
929 my $page_title = $result_page->{title
};
931 if (!exists($pages->{$page_title})) {
932 print STDERR
"$n/", scalar(@
$revision_ids),
933 ": Skipping revision #$rev->{revid} of $page_title\n";
940 $commit{author
} = $rev->{user
} || 'Anonymous';
941 $commit{comment
} = $rev->{comment
} || EMPTY_MESSAGE
;
942 $commit{title
} = mediawiki_smudge_filename
($page_title);
943 $commit{mw_revision
} = $rev->{revid
};
944 $commit{content
} = mediawiki_smudge
($rev->{'*'});
946 if (!defined($rev->{timestamp
})) {
949 $last_timestamp = $rev->{timestamp
};
951 $commit{date
} = DateTime
::Format
::ISO8601
->parse_datetime($last_timestamp);
953 # Differentiates classic pages and media files.
954 my ($namespace, $filename) = $page_title =~ /^([^:]*):(.*)$/;
956 if ($namespace && get_mw_namespace_id
($namespace) == get_mw_namespace_id
("File")) {
957 %mediafile = get_mw_mediafile_for_page_revision
($filename, $rev->{timestamp
});
959 # If this is a revision of the media page for new version
960 # of a file do one common commit for both file and media page.
961 # Else do commit only for that page.
962 print STDERR
"$n/", scalar(@
$revision_ids), ": Revision #$rev->{revid} of $commit{title}\n";
963 import_file_revision
(\
%commit, ($fetch_from == 1), $n_actual, \
%mediafile);
969 sub error_non_fast_forward
{
970 my $advice = run_git
("config --bool advice.pushNonFastForward");
972 if ($advice ne "false") {
973 # Native git-push would show this after the summary.
974 # We can't ask it to display it cleanly, so print it
976 print STDERR
"To prevent you from losing history, non-fast-forward updates were rejected\n";
977 print STDERR
"Merge the remote changes (e.g. 'git pull') before pushing again. See the\n";
978 print STDERR
"'Note about fast-forwards' section of 'git push --help' for details.\n";
980 print STDOUT
"error $_[0] \"non-fast-forward\"\n";
985 my $complete_file_name = shift;
986 my $new_sha1 = shift;
987 my $extension = shift;
988 my $file_deleted = shift;
991 my $path = "File:" . $complete_file_name;
992 my %hashFiles = get_allowed_file_extensions
();
993 if (!exists($hashFiles{$extension})) {
994 print STDERR
"$complete_file_name is not a permitted file on this wiki.\n";
995 print STDERR
"Check the configuration of file uploads in your mediawiki.\n";
998 # Deleting and uploading a file requires a priviledged user
1006 if (!$mediawiki->edit($query)) {
1007 print STDERR
"Failed to delete file on remote wiki\n";
1008 print STDERR
"Check your permissions on the remote site. Error code:\n";
1009 print STDERR
$mediawiki->{error
}->{code
} . ':' . $mediawiki->{error
}->{details
};
1013 # Don't let perl try to interpret file content as UTF-8 => use "raw"
1014 my $content = run_git
("cat-file blob $new_sha1", "raw");
1015 if ($content ne "") {
1017 $mediawiki->{config
}->{upload_url
} =
1018 "$url/index.php/Special:Upload";
1021 filename
=> $complete_file_name,
1022 comment
=> $summary,
1024 $complete_file_name,
1025 Content
=> $content],
1026 ignorewarnings
=> 1,
1029 } ) || die $mediawiki->{error
}->{code
} . ':'
1030 . $mediawiki->{error
}->{details
};
1031 my $last_file_page = $mediawiki->get_page({title
=> $path});
1032 $newrevid = $last_file_page->{revid
};
1033 print STDERR
"Pushed file: $new_sha1 - $complete_file_name.\n";
1035 print STDERR
"Empty file $complete_file_name not pushed.\n";
1042 my $diff_info = shift;
1043 # $diff_info contains a string in this format:
1044 # 100644 100644 <sha1_of_blob_before_commit> <sha1_of_blob_now> <status>
1045 my @diff_info_split = split(/[ \t]/, $diff_info);
1047 # Filename, including .mw extension
1048 my $complete_file_name = shift;
1050 my $summary = shift;
1051 # MediaWiki revision number. Keep the previous one by default,
1052 # in case there's no edit to perform.
1053 my $oldrevid = shift;
1056 if ($summary eq EMPTY_MESSAGE
) {
1060 my $new_sha1 = $diff_info_split[3];
1061 my $old_sha1 = $diff_info_split[2];
1062 my $page_created = ($old_sha1 eq NULL_SHA1
);
1063 my $page_deleted = ($new_sha1 eq NULL_SHA1
);
1064 $complete_file_name = mediawiki_clean_filename
($complete_file_name);
1066 my ($title, $extension) = $complete_file_name =~ /^(.*)\.([^\.]*)$/;
1067 if (!defined($extension)) {
1070 if ($extension eq "mw") {
1072 if ($page_deleted) {
1073 # Deleting a page usually requires
1074 # special priviledges. A common
1075 # convention is to replace the page
1076 # with this content instead:
1077 $file_content = DELETED_CONTENT
;
1079 $file_content = run_git
("cat-file blob $new_sha1");
1084 my $result = $mediawiki->edit( {
1086 summary
=> $summary,
1088 basetimestamp
=> $basetimestamps{$oldrevid},
1089 text
=> mediawiki_clean
($file_content, $page_created),
1091 skip_encoding
=> 1 # Helps with names with accentuated characters
1094 if ($mediawiki->{error
}->{code
} == 3) {
1095 # edit conflicts, considered as non-fast-forward
1096 print STDERR
'Warning: Error ' .
1097 $mediawiki->{error
}->{code
} .
1098 ' from mediwiki: ' . $mediawiki->{error
}->{details
} .
1100 return ($oldrevid, "non-fast-forward");
1102 # Other errors. Shouldn't happen => just die()
1103 die 'Fatal: Error ' .
1104 $mediawiki->{error
}->{code
} .
1105 ' from mediwiki: ' . $mediawiki->{error
}->{details
};
1108 $newrevid = $result->{edit
}->{newrevid
};
1109 print STDERR
"Pushed file: $new_sha1 - $title\n";
1111 $newrevid = mw_upload_file
($complete_file_name, $new_sha1,
1112 $extension, $page_deleted,
1115 $newrevid = ($newrevid or $oldrevid);
1116 return ($newrevid, "ok");
1120 # multiple push statements can follow each other
1121 my @refsspecs = (shift, get_more_refs
("push"));
1123 for my $refspec (@refsspecs) {
1124 my ($force, $local, $remote) = $refspec =~ /^(\+)?([^:]*):([^:]*)$/
1125 or die("Invalid refspec for push. Expected <src>:<dst> or +<src>:<dst>");
1127 print STDERR
"Warning: forced push not allowed on a MediaWiki.\n";
1130 print STDERR
"Cannot delete remote branch on a MediaWiki\n";
1131 print STDOUT
"error $remote cannot delete\n";
1134 if ($remote ne "refs/heads/master") {
1135 print STDERR
"Only push to the branch 'master' is supported on a MediaWiki\n";
1136 print STDOUT
"error $remote only master allowed\n";
1139 if (mw_push_revision
($local, $remote)) {
1144 # Notify Git that the push is done
1147 if ($pushed && $dumb_push) {
1148 print STDERR
"Just pushed some revisions to MediaWiki.\n";
1149 print STDERR
"The pushed revisions now have to be re-imported, and your current branch\n";
1150 print STDERR
"needs to be updated with these re-imported commits. You can do this with\n";
1152 print STDERR
" git pull --rebase\n";
1157 sub mw_push_revision
{
1159 my $remote = shift; # actually, this has to be "refs/heads/master" at this point.
1160 my $last_local_revid = get_last_local_revision
();
1161 print STDERR
".\n"; # Finish sentence started by get_last_local_revision()
1162 my $last_remote_revid = get_last_remote_revision
();
1163 my $mw_revision = $last_remote_revid;
1165 # Get sha1 of commit pointed by local HEAD
1166 my $HEAD_sha1 = run_git
("rev-parse $local 2>/dev/null"); chomp($HEAD_sha1);
1167 # Get sha1 of commit pointed by remotes/$remotename/master
1168 my $remoteorigin_sha1 = run_git
("rev-parse refs/remotes/$remotename/master 2>/dev/null");
1169 chomp($remoteorigin_sha1);
1171 if ($last_local_revid > 0 &&
1172 $last_local_revid < $last_remote_revid) {
1173 return error_non_fast_forward
($remote);
1176 if ($HEAD_sha1 eq $remoteorigin_sha1) {
1181 # Get every commit in between HEAD and refs/remotes/origin/master,
1182 # including HEAD and refs/remotes/origin/master
1183 my @commit_pairs = ();
1184 if ($last_local_revid > 0) {
1185 my $parsed_sha1 = $remoteorigin_sha1;
1186 # Find a path from last MediaWiki commit to pushed commit
1187 while ($parsed_sha1 ne $HEAD_sha1) {
1188 my @commit_info = grep(/^$parsed_sha1/, split(/\n/, run_git
("rev-list --children $local")));
1189 if (!@commit_info) {
1190 return error_non_fast_forward
($remote);
1192 my @commit_info_split = split(/ |\n/, $commit_info[0]);
1193 # $commit_info_split[1] is the sha1 of the commit to export
1194 # $commit_info_split[0] is the sha1 of its direct child
1195 push(@commit_pairs, \
@commit_info_split);
1196 $parsed_sha1 = $commit_info_split[1];
1199 # No remote mediawiki revision. Export the whole
1200 # history (linearized with --first-parent)
1201 print STDERR
"Warning: no common ancestor, pushing complete history\n";
1202 my $history = run_git
("rev-list --first-parent --children $local");
1203 my @history = split('\n', $history);
1204 @history = @history[1..$#history];
1205 foreach my $line (reverse @history) {
1206 my @commit_info_split = split(/ |\n/, $line);
1207 push(@commit_pairs, \
@commit_info_split);
1211 foreach my $commit_info_split (@commit_pairs) {
1212 my $sha1_child = @
{$commit_info_split}[0];
1213 my $sha1_commit = @
{$commit_info_split}[1];
1214 my $diff_infos = run_git
("diff-tree -r --raw -z $sha1_child $sha1_commit");
1215 # TODO: we could detect rename, and encode them with a #redirect on the wiki.
1216 # TODO: for now, it's just a delete+add
1217 my @diff_info_list = split(/\0/, $diff_infos);
1218 # Keep the subject line of the commit message as mediawiki comment for the revision
1219 my $commit_msg = run_git
("log --no-walk --format=\"%s\" $sha1_commit");
1222 while (@diff_info_list) {
1224 # git diff-tree -z gives an output like
1225 # <metadata>\0<filename1>\0
1226 # <metadata>\0<filename2>\0
1227 # and we've split on \0.
1228 my $info = shift(@diff_info_list);
1229 my $file = shift(@diff_info_list);
1230 ($mw_revision, $status) = mw_push_file
($info, $file, $commit_msg, $mw_revision);
1231 if ($status eq "non-fast-forward") {
1232 # we may already have sent part of the
1233 # commit to MediaWiki, but it's too
1234 # late to cancel it. Stop the push in
1235 # the middle, but still give an
1236 # accurate error message.
1237 return error_non_fast_forward
($remote);
1239 if ($status ne "ok") {
1240 die("Unknown error from mw_push_file()");
1243 unless ($dumb_push) {
1244 run_git
("notes --ref=$remotename/mediawiki add -m \"mediawiki_revision: $mw_revision\" $sha1_commit");
1245 run_git
("update-ref -m \"Git-MediaWiki push\" refs/mediawiki/$remotename/master $sha1_commit $sha1_child");
1249 print STDOUT
"ok $remote\n";
1253 sub get_allowed_file_extensions
{
1259 siprop
=> 'fileextensions'
1261 my $result = $mediawiki->api($query);
1262 my @file_extensions= map $_->{ext
},@
{$result->{query
}->{fileextensions
}};
1263 my %hashFile = map {$_ => 1}@file_extensions;
1268 # In memory cache for MediaWiki namespace ids.
1271 # Namespaces whose id is cached in the configuration file
1272 # (to avoid duplicates)
1273 my %cached_mw_namespace_id;
1275 # Return MediaWiki id for a canonical namespace name.
1276 # Ex.: "File", "Project".
1277 sub get_mw_namespace_id
{
1281 if (!exists $namespace_id{$name}) {
1282 # Look at configuration file, if the record for that namespace is
1283 # already cached. Namespaces are stored in form:
1284 # "Name_of_namespace:Id_namespace", ex.: "File:6".
1285 my @temp = split(/[\n]/, run_git
("config --get-all remote."
1286 . $remotename .".namespaceCache"));
1288 foreach my $ns (@temp) {
1289 my ($n, $id) = split(/:/, $ns);
1290 $namespace_id{$n} = $id;
1291 $cached_mw_namespace_id{$n} = 1;
1295 if (!exists $namespace_id{$name}) {
1296 print STDERR
"Namespace $name not found in cache, querying the wiki ...\n";
1297 # NS not found => get namespace id from MW and store it in
1298 # configuration file.
1302 siprop
=> 'namespaces'
1304 my $result = $mediawiki->api($query);
1306 while (my ($id, $ns) = each(%{$result->{query
}->{namespaces
}})) {
1307 if (defined($ns->{id
}) && defined($ns->{canonical
})) {
1308 $namespace_id{$ns->{canonical
}} = $ns->{id
};
1310 # alias (e.g. french Fichier: as alias for canonical File:)
1311 $namespace_id{$ns->{'*'}} = $ns->{id
};
1317 my $id = $namespace_id{$name};
1320 # Store explicitely requested namespaces on disk
1321 if (!exists $cached_mw_namespace_id{$name}) {
1322 run_git
("config --add remote.". $remotename
1323 .".namespaceCache \"". $name .":". $id ."\"");
1324 $cached_mw_namespace_id{$name} = 1;
1328 die "No such namespace $name on MediaWiki.";