X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FWwwListing.pm;h=0be3764c1a3ee28ab908200497336a1a9b42bf77;hb=934fea5e3b3c4c1ef0cef29477941ebfc44ff7e0;hp=6d6d301555bb474c7b648431b98339c09a32501f;hpb=3e0e596105198cfad0eaf3e15f69a21c6bc9ffe1;p=public-inbox.git

diff --git a/lib/PublicInbox/WwwListing.pm b/lib/PublicInbox/WwwListing.pm
index 6d6d3015..0be3764c 100644
--- a/lib/PublicInbox/WwwListing.pm
+++ b/lib/PublicInbox/WwwListing.pm
@@ -1,4 +1,4 @@
-# Copyright (C) 2019 all contributors <meta@public-inbox.org>
+# Copyright (C) 2019-2020 all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # Provide an HTTP-accessible listing of inboxes.
@@ -6,105 +6,244 @@
 package PublicInbox::WwwListing;
 use strict;
 use warnings;
-use PublicInbox::Hval qw(ascii_html);
+use PublicInbox::Hval qw(ascii_html prurl fmt_ts);
 use PublicInbox::Linkify;
 use PublicInbox::View;
+use PublicInbox::Inbox;
+use PublicInbox::GzipFilter qw(gzf_maybe);
+use bytes (); # bytes::length
+use HTTP::Date qw(time2str);
+use Digest::SHA ();
+use File::Spec ();
+use IO::Compress::Gzip qw(gzip);
+*try_cat = \&PublicInbox::Inbox::try_cat;
+our $json;
+for my $mod (qw(JSON::MaybeXS JSON JSON::PP)) {
+	eval "require $mod" or next;
+	# ->ascii encodes non-ASCII to "\uXXXX"
+	$json = $mod->new->ascii(1) and last;
+}
+
+sub list_all_i {
+	my ($ibx, $arg) = @_;
+	my ($list, $hide_key) = @$arg;
+	push @$list, $ibx unless $ibx->{-hide}->{$hide_key};
+}
 
 sub list_all ($$$) {
 	my ($self, $env, $hide_key) = @_;
-	my @list;
-	$self->{pi_config}->each_inbox(sub {
-		my ($ibx) = @_;
-		push @list, $ibx unless $ibx->{-hide}->{$hide_key};
-	});
-	\@list;
+	my $list = [];
+	$self->{pi_config}->each_inbox(\&list_all_i, [ $list, $hide_key ]);
+	$list;
+}
+
+sub list_match_domain_i {
+	my ($ibx, $arg) = @_;
+	my ($list, $hide_key, $re) = @$arg;
+	if (!$ibx->{-hide}->{$hide_key} && grep(/$re/, @{$ibx->{url}})) {
+		push @$list, $ibx;
+	}
 }
 
 sub list_match_domain ($$$) {
 	my ($self, $env, $hide_key) = @_;
-	my @list;
+	my $list = [];
 	my $host = $env->{HTTP_HOST} // $env->{SERVER_NAME};
 	$host =~ s/:[0-9]+\z//;
-	my $re = qr!\A(?:https?:)?//\Q$host\E(?::[0-9]+)?/!i;
-	$self->{pi_config}->each_inbox(sub {
-		my ($ibx) = @_;
-		if (!$ibx->{-hide}->{$hide_key} && $ibx->{url} =~ $re) {
-			push @list, $ibx;
-		}
-	});
-	\@list;
+	my $arg = [ $list, $hide_key,
+		qr!\A(?:https?:)?//\Q$host\E(?::[0-9]+)?/!i ];
+	$self->{pi_config}->each_inbox(\&list_match_domain_i, $arg);
+	$list;
 }
 
 sub list_404 ($$) { [] }
 
 # TODO: +cgit
 my %VALID = (
-	all => *list_all,
-	'match=domain' => *list_match_domain,
-	404 => *list_404,
+	all => \&list_all,
+	'match=domain' => \&list_match_domain,
+	404 => \&list_404,
 );
 
+sub set_cb ($$$) {
+	my ($pi_config, $k, $default) = @_;
+	my $v = $pi_config->{lc $k} // $default;
+	$VALID{$v} || do {
+		warn <<"";
+`$v' is not a valid value for `$k'
+$k be one of `all', `match=domain', or `404'
+
+		$VALID{$default};
+	};
+}
+
 sub new {
 	my ($class, $www) = @_;
-	my $k = 'publicinbox.wwwListing';
 	my $pi_config = $www->{pi_config};
-	my $v = $pi_config->{lc($k)} // 404;
 	bless {
 		pi_config => $pi_config,
 		style => $www->style("\0"),
-		list_cb => $VALID{$v} || do {
-			warn <<"";
-`$v' is not a valid value for `$k'
-$k be one of `all', `match=domain', or `404'
-
-			*list_404;
-		},
+		www_cb => set_cb($pi_config, 'publicInbox.wwwListing', 404),
+		manifest_cb => set_cb($pi_config, 'publicInbox.grokManifest',
+					'match=domain'),
 	}, $class;
 }
 
 sub ibx_entry {
 	my ($mtime, $ibx, $env) = @_;
-	my $ts = PublicInbox::View::fmt_ts($mtime);
-	my $url = PublicInbox::Hval::prurl($env, $ibx->{url});
+	my $ts = fmt_ts($mtime);
+	my $url = prurl($env, $ibx->{url});
 	my $tmp = <<"";
 * $ts - $url
   ${\$ibx->description}
 
-	if (defined(my $info_url = $ibx->{info_url})) {
-		$tmp .= "\n$info_url";
+	if (defined(my $info_url = $ibx->{infourl})) {
+		$tmp .= '  ' . prurl($env, $info_url) . "\n";
 	}
 	$tmp;
 }
 
-# not really a stand-alone PSGI app, but maybe it could be...
-sub call {
-	my ($self, $env) = @_;
-	my $h = [ 'Content-Type', 'text/html; charset=UTF-8' ];
-	my $hide_key = 'www';
-	if ($env->{PATH_INFO} =~ m!/manifest\.js(?:\.gz)\z/!) {
-		$hide_key = 'manifest';
-	}
-	my $list = $self->{list_cb}->($self, $env, $hide_key);
+sub html ($$) {
+	my ($env, $list) = @_;
+	my $h = [ 'Content-Type', 'text/html; charset=UTF-8',
+			'Content-Length', undef ];
+	my $gzf = gzf_maybe($h, $env);
+	$gzf->zmore('<html><head><title>' .
+				'public-inbox listing</title>' .
+				'</head><body><pre>');
 	my $code = 404;
-	my $title = 'public-inbox';
-	my $out = '';
 	if (@$list) {
-		# Swartzian transform since ->modified is expensive
+		$code = 200;
+		# Schwartzian transform since Inbox->modified is expensive
 		@$list = sort {
 			$b->[0] <=> $a->[0]
 		} map { [ $_->modified, $_ ] } @$list;
 
-		$code = 200;
-		$title .= ' - listing';
 		my $tmp = join("\n", map { ibx_entry(@$_, $env) } @$list);
 		my $l = PublicInbox::Linkify->new;
-		$l->linkify_1($tmp);
-		$out = '<pre>'.$l->linkify_2(ascii_html($tmp)).'</pre><hr>';
+		$gzf->zmore($l->to_html($tmp));
+	} else {
+		$gzf->zmore('no inboxes, yet');
+	}
+	my $out = $gzf->zflush('</pre><hr><pre>'.
+				PublicInbox::WwwStream::code_footer($env) .
+				'</pre></body></html>');
+	$h->[3] = bytes::length($out);
+	[ $code, $h, [ $out ] ];
+}
+
+sub fingerprint ($) {
+	my ($git) = @_;
+	# TODO: convert to qspawn for fairness when there's
+	# thousands of repos
+	my ($fh, $pid) = $git->popen('show-ref');
+	my $dig = Digest::SHA->new(1);
+	while (read($fh, my $buf, 65536)) {
+		$dig->add($buf);
+	}
+	close $fh;
+	waitpid($pid, 0);
+	return if $?; # empty, uninitialized git repo
+	$dig->hexdigest;
+}
+
+sub manifest_add ($$;$$) {
+	my ($manifest, $ibx, $epoch, $default_desc) = @_;
+	my $url_path = "/$ibx->{name}";
+	my $git_dir = $ibx->{inboxdir};
+	if (defined $epoch) {
+		$git_dir .= "/git/$epoch.git";
+		$url_path .= "/git/$epoch.git";
+	}
+	return unless -d $git_dir;
+	my $git = PublicInbox::Git->new($git_dir);
+	my $fingerprint = fingerprint($git) or return; # no empty repos
+
+	chomp(my $owner = $git->qx('config', 'gitweb.owner'));
+	chomp(my $desc = try_cat("$git_dir/description"));
+	utf8::decode($owner);
+	utf8::decode($desc);
+	$owner = undef if $owner eq '';
+	$desc = 'Unnamed repository' if $desc eq '';
+
+	# templates/hooks--update.sample and git-multimail in git.git
+	# only match "Unnamed repository", not the full contents of
+	# templates/this--description in git.git
+	if ($desc =~ /\AUnnamed repository/) {
+		$desc = "$default_desc [epoch $epoch]" if defined($epoch);
+	}
+
+	my $reference;
+	chomp(my $alt = try_cat("$git_dir/objects/info/alternates"));
+	if ($alt) {
+		# n.b.: GitPython doesn't seem to handle comments or C-quoted
+		# strings like native git does; and we don't for now, either.
+		my @alt = split(/\n+/, $alt);
+
+		# grokmirror only supports 1 alternate for "reference",
+		if (scalar(@alt) == 1) {
+			my $objdir = "$git_dir/objects";
+			$reference = File::Spec->rel2abs($alt[0], $objdir);
+			$reference =~ s!/[^/]+/?\z!!; # basename
+		}
+	}
+	$manifest->{-abs2urlpath}->{$git_dir} = $url_path;
+	my $modified = $git->modified;
+	if ($modified > $manifest->{-mtime}) {
+		$manifest->{-mtime} = $modified;
+	}
+	$manifest->{$url_path} = {
+		owner => $owner,
+		reference => $reference,
+		description => $desc,
+		modified => $modified,
+		fingerprint => $fingerprint,
+	};
+}
+
+# manifest.js.gz
+sub js ($$) {
+	my ($env, $list) = @_;
+	# $json won't be defined if IO::Compress::Gzip is missing
+	$json or return [ 404, [], [] ];
+
+	my $manifest = { -abs2urlpath => {}, -mtime => 0 };
+	for my $ibx (@$list) {
+		if (defined(my $max = $ibx->max_git_epoch)) {
+			my $desc = $ibx->description;
+			for my $epoch (0..$max) {
+				manifest_add($manifest, $ibx, $epoch, $desc);
+			}
+		} else {
+			manifest_add($manifest, $ibx);
+		}
+	}
+	my $abs2urlpath = delete $manifest->{-abs2urlpath};
+	my $mtime = delete $manifest->{-mtime};
+	while (my ($url_path, $repo) = each %$manifest) {
+		defined(my $abs = $repo->{reference}) or next;
+		$repo->{reference} = $abs2urlpath->{$abs};
+	}
+	my $out;
+	gzip(\($json->encode($manifest)) => \$out);
+	$manifest = undef;
+	[ 200, [ qw(Content-Type application/gzip),
+		 'Last-Modified', time2str($mtime),
+		 'Content-Length', bytes::length($out) ], [ $out ] ];
+}
+
+# not really a stand-alone PSGI app, but maybe it could be...
+sub call {
+	my ($self, $env) = @_;
+
+	if ($env->{PATH_INFO} eq '/manifest.js.gz') {
+		# grokmirror uses relative paths, so it's domain-dependent
+		my $list = $self->{manifest_cb}->($self, $env, 'manifest');
+		js($env, $list);
+	} else { # /
+		my $list = $self->{www_cb}->($self, $env, 'www');
+		html($env, $list);
 	}
-	$out = "<html><head><title>$title</title></head><body>" . $out;
-	$out .= '<pre>'. PublicInbox::WwwStream::code_footer($env) .
-		'</pre></body></html>';
-	[ $code, $h, [ $out ] ]
 }
 
 1;