--- /dev/null
+#!/usr/bin/perl -w
+# Copyright (C) 2019 all contributors <meta@public-inbox.org>
+# License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
+#
+# PublicInbox::Cgit may be used independently of WWW.
+#
+# Usage:
+# plackup -I lib -o 127.0.0.1 -R lib -r examples/cgit.psgi
+use strict;
+use warnings;
+use Plack::Builder;
+use PublicInbox::Cgit;
+use PublicInbox::Config;
+my $pi_config = PublicInbox::Config->new;
+my $cgit = PublicInbox::Cgit->new($pi_config);
+
+builder {
+ eval {
+ enable 'Deflater',
+ content_type => [ qw(
+ text/html
+ text/plain
+ application/atom+xml
+ )]
+ };
+ eval { enable 'ReverseProxy' };
+ enable 'Head';
+ sub { $cgit->call($_[0]) }
+}
--- /dev/null
+# Copyright (C) 2019 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# wrapper for cgit(1) and git-http-backend(1) for browsing and
+# serving git code repositories. Requires 'publicinbox.cgitrc'
+# directive to be set in the public-inbox config file.
+
+package PublicInbox::Cgit;
+use strict;
+use PublicInbox::GitHTTPBackend;
+# not bothering with Exporter for a one-off
+*r = *PublicInbox::GitHTTPBackend::r;
+*input_prepare = *PublicInbox::GitHTTPBackend::input_prepare;
+*parse_cgi_headers = *PublicInbox::GitHTTPBackend::parse_cgi_headers;
+*serve = *PublicInbox::GitHTTPBackend::serve;
+use warnings;
+use PublicInbox::Qspawn;
+
+sub new {
+ my ($class, $pi_config) = @_;
+ my $cgit_bin = $pi_config->{'publicinbox.cgitbin'} ||
+ # Debian default location:
+ '/usr/lib/cgit/cgit.cgi';
+
+ my $self = bless {
+ cmd => [ $cgit_bin ],
+ pi_config => $pi_config,
+ }, $class;
+
+ $pi_config->each_inbox(sub {}); # fill in -code_repos mapped to inboxes
+
+ # some cgit repos may not be mapped to inboxes, so ensure those exist:
+ my $code_repos = $pi_config->{-code_repos};
+ foreach my $k (keys %$pi_config) {
+ $k =~ /\Acoderepo\.(.+)\.dir\z/ or next;
+ my $dir = $pi_config->{$k};
+ $code_repos->{$1} ||= PublicInbox::Git->new($dir);
+ }
+ while (my ($nick, $repo) = each %$code_repos) {
+ $self->{"\0$nick"} = $repo;
+ }
+ $self;
+}
+
+# only what cgit cares about:
+my @PASS_ENV = qw(
+ HTTP_HOST
+ QUERY_STRING
+ REQUEST_METHOD
+ SCRIPT_NAME
+ SERVER_NAME
+ SERVER_PORT
+ HTTP_COOKIE
+ HTTP_REFERER
+ CONTENT_LENGTH
+);
+# XXX: cgit filters may care about more variables...
+
+sub call {
+ my ($self, $env) = @_;
+ my $path_info = $env->{PATH_INFO};
+
+ # handle requests without spawning cgit iff possible:
+ if ($path_info =~ m!\A/(.+?)/($PublicInbox::GitHTTPBackend::ANY)\z!ox) {
+ my ($nick, $path) = ($1, $2);
+ if (my $git = $self->{"\0$nick"}) {
+ return serve($env, $git, $path);
+ }
+ }
+
+ my $cgi_env = { PATH_INFO => $path_info };
+ foreach (@PASS_ENV) {
+ defined(my $v = $env->{$_}) or next;
+ $cgi_env->{$_} = $v;
+ }
+ $cgi_env->{'HTTPS'} = 'on' if $env->{'psgi.url_scheme'} eq 'https';
+
+ my $rdr = input_prepare($env) or return r(500);
+ my $qsp = PublicInbox::Qspawn->new($self->{cmd}, $cgi_env, $rdr);
+ $qsp->psgi_return($env, undef, sub {
+ my ($r, $bref) = @_;
+ my $res = parse_cgi_headers($r, $bref) or return; # incomplete
+ $res;
+ });
+}
+
+1;