1 files changed, 101 insertions, 0 deletions
diff --git a/third_party/git/contrib/mw-to-git/Git/Mediawiki.pm b/third_party/git/contrib/mw-to-git/Git/Mediawiki.pm
new file mode 100644
index 000000000000..917d9e2d3222
--- /dev/null
+++ b/third_party/git/contrib/mw-to-git/Git/Mediawiki.pm
@@ -0,0 +1,101 @@
+package Git::Mediawiki;
+
+use 5.008;
+use strict;
+use POSIX;
+use Git;
+
+BEGIN {
+
+our ($VERSION, @ISA, @EXPORT, @EXPORT_OK);
+
+# Totally unstable API.
+$VERSION = '0.01';
+
+require Exporter;
+
+@ISA = qw(Exporter);
+
+@EXPORT = ();
+
+# Methods which can be called as standalone functions as well:
+@EXPORT_OK = qw(clean_filename smudge_filename connect_maybe
+				EMPTY HTTP_CODE_OK HTTP_CODE_PAGE_NOT_FOUND);
+}
+
+# Mediawiki filenames can contain forward slashes. This variable decides by which pattern they should be replaced
+use constant SLASH_REPLACEMENT => '%2F';
+
+# Used to test for empty strings
+use constant EMPTY => q{};
+
+# HTTP codes
+use constant HTTP_CODE_OK => 200;
+use constant HTTP_CODE_PAGE_NOT_FOUND => 404;
+
+sub clean_filename {
+	my $filename = shift;
+	$filename =~ s{@{[SLASH_REPLACEMENT]}}{/}g;
+	# [, ], |, {, and } are forbidden by MediaWiki, even URL-encoded.
+	# Do a variant of URL-encoding, i.e. looks like URL-encoding,
+	# but with _ added to prevent MediaWiki from thinking this is
+	# an actual special character.
+	$filename =~ s/[\[\]\{\}\|]/sprintf("_%%_%x", ord($&))/ge;
+	# If we use the uri escape before
+	# we should unescape here, before anything
+
+	return $filename;
+}
+
+sub smudge_filename {
+	my $filename = shift;
+	$filename =~ s{/}{@{[SLASH_REPLACEMENT]}}g;
+	$filename =~ s/ /_/g;
+	# Decode forbidden characters encoded in clean_filename
+	$filename =~ s/_%_([0-9a-fA-F][0-9a-fA-F])/sprintf('%c', hex($1))/ge;
+	return substr($filename, 0, NAME_MAX-length('.mw'));
+}
+
+sub connect_maybe {
+	my $wiki = shift;
+	if ($wiki) {
+		return $wiki;
+	}
+
+	my $remote_name = shift;
+	my $remote_url = shift;
+	my ($wiki_login, $wiki_password, $wiki_domain);
+
+	$wiki_login = Git::config("remote.${remote_name}.mwLogin");
+	$wiki_password = Git::config("remote.${remote_name}.mwPassword");
+	$wiki_domain = Git::config("remote.${remote_name}.mwDomain");
+
+	$wiki = MediaWiki::API->new;
+	$wiki->{config}->{api_url} = "${remote_url}/api.php";
+	if ($wiki_login) {
+		my %credential = (
+			'url' => $remote_url,
+			'username' => $wiki_login,
+			'password' => $wiki_password
+		);
+		Git::credential(\%credential);
+		my $request = {lgname => $credential{username},
+			       lgpassword => $credential{password},
+			       lgdomain => $wiki_domain};
+		if ($wiki->login($request)) {
+			Git::credential(\%credential, 'approve');
+			print {*STDERR} qq(Logged in mediawiki user "$credential{username}".\n);
+		} else {
+			print {*STDERR} qq(Failed to log in mediawiki user "$credential{username}" on ${remote_url}\n);
+			print {*STDERR} '  (error ' .
+				$wiki->{error}->{code} . ': ' .
+				$wiki->{error}->{details} . ")\n";
+			Git::credential(\%credential, 'reject');
+			exit 1;
+		}
+	}
+
+	return $wiki;
+}
+
+1; # Famous last words