X-Git-Url: https://git.ladys.computer/Gitweb/blobdiff_plain/9c7ff0ff03cf1f7253fc99791d3390a33526c6767bec06ea8d2d8dd7b1796632..da36a523ef7eeb487c7ea5ccf8eaa34572d1e2b01f28ae291d02b4c60816490c:/gitweb.cgi

diff --git a/gitweb.cgi b/gitweb.cgi
index dab2a12..e46e509 100755
--- a/gitweb.cgi
+++ b/gitweb.cgi
@@ -5,23 +5,26 @@
 # (C) 2005, Kay Sievers <kay.sievers@vrfy.org>
 # (C) 2005, Christian Gierke <ch@gierke.de>
 #
-# This program is licensed under the GPL v2, or a later version
+# This program is licensed under the GPLv2
 
 use strict;
 use warnings;
 use CGI qw(:standard :escapeHTML -nosticky);
 use CGI::Util qw(unescape);
 use CGI::Carp qw(fatalsToBrowser);
+use Encode;
 use Fcntl ':mode';
+binmode STDOUT, ':utf8';
 
 my $cgi = new CGI;
-my $version =		"233";
+my $version =		"253";
 my $my_url =		$cgi->url();
 my $my_uri =		$cgi->url(-absolute => 1);
-my $rss_link = "";
+my $rss_link =		"";
 
 # absolute fs-path which will be prepended to the project path
-my $projectroot =	"/pub/scm";
+#my $projectroot =	"/pub/scm";
+my $projectroot =	"/home/kay/public_html/pub/scm";
 
 # location of the git-core binaries
 my $gitbin =		"/usr/bin";
@@ -36,13 +39,13 @@ my $home_link =		$my_uri;
 my $home_text =		"indextext.html";
 
 # source of projects list
-#my $projects_list = $projectroot;
-my $projects_list = "index/index.aux";
+#my $projects_list =	$projectroot;
+my $projects_list =	"index/index.aux";
 
 # input validation and dispatch
 my $action = $cgi->param('a');
 if (defined $action) {
-	if ($action =~ m/[^0-9a-zA-Z\.\-_]+/) {
+	if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 		undef $action;
 		die_error(undef, "Invalid action parameter.");
 	}
@@ -55,15 +58,19 @@ if (defined $action) {
 	}
 }
 
+my $order = $cgi->param('o');
+if (defined $order) {
+	if ($order =~ m/[^0-9a-zA-Z_]/) {
+		undef $order;
+		die_error(undef, "Invalid order parameter.");
+	}
+}
+
 my $project = $cgi->param('p');
 if (defined $project) {
-	if ($project =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
-		undef $project;
-		die_error(undef, "Non-canonical project parameter.");
-	}
-	if ($project =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~]/) {
-		undef $project;
-		die_error(undef, "Invalid character in project parameter.");
+	$project = validate_input($project);
+	if (!defined($project)) {
+		die_error(undef, "Invalid project parameter.");
 	}
 	if (!(-d "$projectroot/$project")) {
 		undef $project;
@@ -73,7 +80,8 @@ if (defined $project) {
 		undef $project;
 		die_error(undef, "No such project.");
 	}
-	$rss_link = "<link rel=\"alternate\" title=\"$project log\" href=\"$my_uri?p=$project;a=rss\" type=\"application/rss+xml\"/>";
+	$rss_link = "<link rel=\"alternate\" title=\"" . esc_url($project) . " log\" href=\"" .
+		    esc_url("$my_uri?p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 	$ENV{'GIT_DIR'} = "$projectroot/$project";
 } else {
 	git_project_list();
@@ -82,54 +90,39 @@ if (defined $project) {
 
 my $file_name = $cgi->param('f');
 if (defined $file_name) {
-	if ($file_name =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
-		undef $file_name;
-		die_error(undef, "Non-canonical file parameter.");
-	}
-	if ($file_name =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~\:\!]/) {
-		undef $file_name;
-		die_error(undef, "Invalid character in file parameter.");
+	$file_name = validate_input($file_name);
+	if (!defined($file_name)) {
+		die_error(undef, "Invalid file parameter.");
 	}
 }
 
 my $hash = $cgi->param('h');
 if (defined $hash) {
-	if (!($hash =~ m/^[0-9a-fA-F]{40}$/)) {
-		if ($hash =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
-			undef $hash;
-			die_error(undef, "Non-canonical hash parameter.");
-		}
-		if ($hash =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~\:\!]/) {
-			undef $hash;
-			die_error(undef, "Invalid character in hash parameter.");
-		}
-		# replace branch-name with hash
-		my $branchlist = git_read_refs("refs/heads");
-		foreach my $entry (@$branchlist) {
-			my %branch = %$entry;
-			if ($branch{'name'} eq $hash) {
-				$hash = $branch{'id'};
-				last;
-			}
-		}
+	$hash = validate_input($hash);
+	if (!defined($hash)) {
+		die_error(undef, "Invalid hash parameter.");
 	}
 }
 
 my $hash_parent = $cgi->param('hp');
-if (defined $hash_parent && !($hash_parent =~ m/^[0-9a-fA-F]{40}$/)) {
-	undef $hash_parent;
-	die_error(undef, "Invalid hash_parent parameter.");
+if (defined $hash_parent) {
+	$hash_parent = validate_input($hash_parent);
+	if (!defined($hash_parent)) {
+		die_error(undef, "Invalid hash parent parameter.");
+	}
 }
 
 my $hash_base = $cgi->param('hb');
-if (defined $hash_base && !($hash_base =~ m/^[0-9a-fA-F]{40}$/)) {
-	undef $hash_base;
-	die_error(undef, "Invalid parent hash parameter.");
+if (defined $hash_base) {
+	$hash_base = validate_input($hash_base);
+	if (!defined($hash_base)) {
+		die_error(undef, "Invalid hash base parameter.");
+	}
 }
 
 my $page = $cgi->param('pg');
 if (defined $page) {
-	if ($page =~ m/^[^0-9]+$/) {
+	if ($page =~ m/[^0-9]$/) {
 		undef $page;
 		die_error(undef, "Invalid page parameter.");
 	}
@@ -144,11 +137,26 @@ if (defined $searchtext) {
 	$searchtext = quotemeta $searchtext;
 }
 
+sub validate_input {
+	my $input = shift;
+
+	if ($input =~ m/^[0-9a-fA-F]{40}$/) {
+		return $input;
+	}
+	if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
+		return undef;
+	}
+	if ($input =~ m/[^a-zA-Z0-9_ \.\/\-\+\#\~]/) {
+		return undef;
+	}
+	return $input;
+}
+
 if (!defined $action || $action eq "summary") {
 	git_summary();
 	exit;
-} elsif ($action eq "branches") {
-	git_branches();
+} elsif ($action eq "heads") {
+	git_heads();
 	exit;
 } elsif ($action eq "tags") {
 	git_tags();
@@ -192,14 +200,32 @@ if (!defined $action || $action eq "summary") {
 } elsif ($action eq "shortlog") {
 	git_shortlog();
 	exit;
+} elsif ($action eq "tag") {
+	git_tag();
+	exit;
 } else {
 	undef $action;
 	die_error(undef, "Unknown action.");
 	exit;
 }
 
+sub esc_url {
+	my $str = shift;
+	$str =~ s/\+/%2B/g;
+	$str =~ s/ /\+/g;
+	return $str;
+}
+
+sub esc_html {
+	my $str = shift;
+	$str = decode("utf8", $str, Encode::FB_DEFAULT);
+	$str = escapeHTML($str);
+	return $str;
+}
+
 sub git_header_html {
 	my $status = shift || "200 OK";
+	my $expires = shift;
 
 	my $title = "git";
 	if (defined $project) {
@@ -208,7 +234,7 @@ sub git_header_html {
 			$title .= "/$action";
 		}
 	}
-	print $cgi->header(-type=>'text/html',  -charset => 'utf-8', -status=> $status);
+	print $cgi->header(-type=>'text/html',  -charset => 'utf-8', -status=> $status, -expires => $expires);
 	print <<EOF;
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
@@ -224,7 +250,7 @@ body { font-family: sans-serif; font-size: 12px; margin:0px; border:solid #d9d8d
 a { color:#0000cc; }
 a:hover, a:visited, a:active { color:#880000; }
 div.page_header { height:25px; padding:8px; font-size:18px; font-weight:bold; background-color:#d9d8d1; }
-div.page_header a:visited { color:#0000cc; }
+div.page_header a:visited, a.header { color:#0000cc; }
 div.page_header a:hover { color:#880000; }
 div.page_nav { padding:8px; }
 div.page_nav a:visited { color:#0000cc; }
@@ -248,6 +274,9 @@ div.log_link {
 div.list_head { padding:6px 8px 4px; border:solid #d9d8d1; border-width:1px 0px 0px; font-style:italic; }
 a.list { text-decoration:none; color:#000000; }
 a.list:hover { text-decoration:underline; color:#880000; }
+a.text { text-decoration:none; color:#0000cc; }
+a.text:visited { text-decoration:none; color:#880000; }
+a.text:hover { text-decoration:underline; color:#880000; }
 table { padding:8px 4px; }
 th { padding:2px 5px; font-size:12px; text-align:left; }
 tr.light:hover { background-color:#edece6; }
@@ -274,11 +303,11 @@ a.rss_logo:hover { background-color:#ee5500; }
 EOF
 	print "<div class=\"page_header\">\n" .
 	      "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
-	      "<img src=\"$my_uri?a=git-logo.png\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
+	      "<img src=\"" . esc_url("$my_uri?a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 	      "</a>\n";
-	print $cgi->a({-href => $home_link}, "projects") . " / ";
+	print $cgi->a({-href => esc_url($home_link)}, "projects") . " / ";
 	if (defined $project) {
-		print $cgi->a({-href => "$my_uri?p=$project;a=summary"}, escapeHTML($project));
+		print $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, esc_html($project));
 		if (defined $action) {
 			print " / $action";
 		}
@@ -286,11 +315,19 @@ EOF
 		if (!defined $searchtext) {
 			$searchtext = "";
 		}
+		my $search_hash;
+		if (defined $hash) {
+			$search_hash = $hash;
+		} else {
+			$search_hash  = "HEAD";
+		}
 		$cgi->param("a", "search");
-		print $cgi->startform(-method => "get", -action => "$my_uri") .
+		$cgi->param("h", $search_hash);
+		print $cgi->startform(-method => "get", -action => $my_uri) .
 		      "<div class=\"search\">\n" .
 		      $cgi->hidden(-name => "p") . "\n" .
 		      $cgi->hidden(-name => "a") . "\n" .
+		      $cgi->hidden(-name => "h") . "\n" .
 		      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 		      "</div>" .
 		      $cgi->end_form() . "\n";
@@ -303,11 +340,11 @@ sub git_footer_html {
 	if (defined $project) {
 		my $descr = git_read_description($project);
 		if (defined $descr) {
-			print "<div class=\"page_footer_text\">" . escapeHTML($descr) . "</div>\n";
+			print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 		}
-		print $cgi->a({-href => "$my_uri?p=$project;a=rss", -class => "rss_logo"}, "RSS") . "\n";
+		print $cgi->a({-href => esc_url("$my_uri?p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 	} else {
-		print $cgi->a({-href => "$my_uri?a=opml", -class => "rss_logo"}, "RSS") . "\n";
+		print $cgi->a({-href => esc_url("$my_uri?a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 	}
 	print "</div>\n" .
 	      "</body>\n" .
@@ -333,7 +370,7 @@ sub git_get_type {
 
 	open my $fd, "-|", "$gitbin/git-cat-file -t $hash" or return;
 	my $type = <$fd>;
-	close $fd;
+	close $fd or return;
 	chomp $type;
 	return $type;
 }
@@ -363,8 +400,10 @@ sub git_read_description {
 sub git_read_tag {
 	my $tag_id = shift;
 	my %tag;
+	my @comment;
 
 	open my $fd, "-|", "$gitbin/git-cat-file tag $tag_id" or return;
+	$tag{'id'} = $tag_id;
 	while (my $line = <$fd>) {
 		chomp $line;
 		if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
@@ -373,8 +412,19 @@ sub git_read_tag {
 			$tag{'type'} = $1;
 		} elsif ($line =~ m/^tag (.+)$/) {
 			$tag{'name'} = $1;
+		} elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
+			$tag{'author'} = $1;
+			$tag{'epoch'} = $2;
+			$tag{'tz'} = $3;
+		} elsif ($line =~ m/--BEGIN/) {
+			push @comment, $line;
+			last;
+		} elsif ($line eq "") {
+			last;
 		}
 	}
+	push @comment, <$fd>;
+	$tag{'comment'} = \@comment;
 	close $fd or return;
 	if (!defined $tag{'name'}) {
 		return
@@ -382,27 +432,65 @@ sub git_read_tag {
 	return %tag
 }
 
+sub age_string {
+	my $age = shift;
+	my $age_str;
+
+	if ($age > 60*60*24*365*2) {
+		$age_str = (int $age/60/60/24/365);
+		$age_str .= " years ago";
+	} elsif ($age > 60*60*24*(365/12)*2) {
+		$age_str = int $age/60/60/24/(365/12);
+		$age_str .= " months ago";
+	} elsif ($age > 60*60*24*7*2) {
+		$age_str = int $age/60/60/24/7;
+		$age_str .= " weeks ago";
+	} elsif ($age > 60*60*24*2) {
+		$age_str = int $age/60/60/24;
+		$age_str .= " days ago";
+	} elsif ($age > 60*60*2) {
+		$age_str = int $age/60/60;
+		$age_str .= " hours ago";
+	} elsif ($age > 60*2) {
+		$age_str = int $age/60;
+		$age_str .= " min ago";
+	} elsif ($age > 2) {
+		$age_str = int $age;
+		$age_str .= " sec ago";
+	} else {
+		$age_str .= " right now";
+	}
+	return $age_str;
+}
+
 sub git_read_commit {
 	my $commit_id = shift;
 	my $commit_text = shift;
 
 	my @commit_lines;
 	my %co;
-	my @parents;
 
 	if (defined $commit_text) {
 		@commit_lines = @$commit_text;
 	} else {
-		open my $fd, "-|", "$gitbin/git-cat-file commit $commit_id" or return;
-		@commit_lines = map { chomp; $_ } <$fd>;
+		$/ = "\0";
+		open my $fd, "-|", "$gitbin/git-rev-list --header --parents --max-count=1 $commit_id" or return;
+		@commit_lines = split '\n', <$fd>;
 		close $fd or return;
+		$/ = "\n";
+		pop @commit_lines;
+	}
+	my $header = shift @commit_lines;
+	if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
+		return;
 	}
+	($co{'id'}, my @parents) = split ' ', $header;
+	$co{'parents'} = \@parents;
+	$co{'parent'} = $parents[0];
 	while (my $line = shift @commit_lines) {
 		last if $line eq "\n";
 		if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 			$co{'tree'} = $1;
-		} elsif ($line =~ m/^parent ([0-9a-fA-F]{40})$/) {
-			push @parents, $1;
 		} elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 			$co{'author'} = $1;
 			$co{'author_epoch'} = $2;
@@ -421,15 +509,12 @@ sub git_read_commit {
 		}
 	}
 	if (!defined $co{'tree'}) {
-		return undef
+		return;
 	};
-	$co{'id'} = $commit_id;
-	$co{'parents'} = \@parents;
-	$co{'parent'} = $parents[0];
-	$co{'comment'} = \@commit_lines;
+
 	foreach my $title (@commit_lines) {
 		if ($title ne "") {
-			$co{'title'} = chop_str($title, 80);
+			$co{'title'} = chop_str($title, 80, 5);
 			# remove leading stuff of merges to make the interesting part visible
 			if (length($title) > 50) {
 				$title =~ s/^Automatic //;
@@ -447,37 +532,19 @@ sub git_read_commit {
 					$title =~ s/\/pub\/scm//;
 				}
 			}
-			$co{'title_short'} = chop_str($title, 50);
+			$co{'title_short'} = chop_str($title, 50, 5);
 			last;
 		}
 	}
+	# remove added spaces
+	foreach my $line (@commit_lines) {
+		$line =~ s/^    //;
+	}
+	$co{'comment'} = \@commit_lines;
 
 	my $age = time - $co{'committer_epoch'};
 	$co{'age'} = $age;
-	if ($age > 60*60*24*365*2) {
-		$co{'age_string'} = (int $age/60/60/24/365);
-		$co{'age_string'} .= " years ago";
-	} elsif ($age > 60*60*24*(365/12)*2) {
-		$co{'age_string'} = int $age/60/60/24/(365/12);
-		$co{'age_string'} .= " months ago";
-	} elsif ($age > 60*60*24*7*2) {
-		$co{'age_string'} = int $age/60/60/24/7;
-		$co{'age_string'} .= " weeks ago";
-	} elsif ($age > 60*60*24*2) {
-		$co{'age_string'} = int $age/60/60/24;
-		$co{'age_string'} .= " days ago";
-	} elsif ($age > 60*60*2) {
-		$co{'age_string'} = int $age/60/60;
-		$co{'age_string'} .= " hours ago";
-	} elsif ($age > 60*2) {
-		$co{'age_string'} = int $age/60;
-		$co{'age_string'} .= " min ago";
-	} elsif ($age > 2) {
-		$co{'age_string'} = int $age;
-		$co{'age_string'} .= " sec ago";
-	} else {
-		$co{'age_string'} .= " right now";
-	}
+	$co{'age_string'} = age_string($age);
 	my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 	if ($age > 60*60*24*7*2) {
 		$co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
@@ -522,7 +589,7 @@ sub git_diff_print {
 		close $fd;
 	}
 
-	open my $fd, "-|", "/usr/bin/diff -u -p -L $from_name -L $to_name $from_tmp $to_tmp";
+	open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
 	if ($format eq "plain") {
 		undef $/;
 		print <$fd>;
@@ -548,7 +615,7 @@ sub git_diff_print {
 					$line =~ s/\t/$spaces/;
 				}
 			}
-			print "<div class=\"pre\"$color>" . escapeHTML($line) . "</div>\n";
+			print "<div class=\"pre\"$color>" . esc_html($line) . "</div>\n";
 		}
 	}
 	close $fd;
@@ -585,12 +652,15 @@ sub chop_str {
 	my $len = shift;
 	my $add_len = shift || 10;
 
-	$str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})/;
-	my $chopped = $1;
-	if ($chopped ne $str) {
-		$chopped .= " ...";
+	# allow only $len chars, but don't cut a word if it would fit in $add_len
+	# if it doesn't fit, cut it if it's still longer than the dots we would add
+	$str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
+	my $body = $1;
+	my $tail = $2;
+	if (length($tail) > 4) {
+		$tail = " ...";
 	}
-	return $chopped;
+	return "$body$tail";
 }
 
 sub file_type {
@@ -607,6 +677,21 @@ sub file_type {
 	}
 }
 
+sub format_log_line_html {
+	my $line = shift;
+
+	$line = esc_html($line);
+	$line =~ s/ /&nbsp;/g;
+	if ($line =~ m/([0-9a-fA-F]{40})/) {
+		my $hash_text = $1;
+		if (git_get_type($hash_text) eq "commit") {
+			my $link = $cgi->a({-class => "text", -href => esc_url("$my_uri?p=$project;a=commit;h=$hash_text")}, $hash_text);
+			$line =~ s/$hash_text/$link/;
+		}
+	}
+	return $line;
+}
+
 sub date_str {
 	my $epoch = shift;
 	my $tz = shift || "-0000";
@@ -634,6 +719,7 @@ sub date_str {
 
 # git-logo (cached in browser for one day)
 sub git_logo {
+	binmode STDOUT, ':raw';
 	print $cgi->header(-type => 'image/png', -expires => '+1d');
 	# cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
 	print	"\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
@@ -710,9 +796,30 @@ sub git_read_projects {
 
 sub git_project_list {
 	my @list = git_read_projects();
+	my @projects;
 	if (!@list) {
 		die_error(undef, "No project found.");
 	}
+	foreach my $pr (@list) {
+		my $head = git_read_hash("$pr->{'path'}/HEAD");
+		if (!defined $head) {
+			next;
+		}
+		$ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
+		my %co = git_read_commit($head);
+		if (!%co) {
+			next;
+		}
+		$pr->{'commit'} = \%co;
+		if (!defined $pr->{'descr'}) {
+			my $descr = git_read_description($pr->{'path'}) || "";
+			$pr->{'descr'} = chop_str($descr, 25, 5);
+		}
+		if (!defined $pr->{'owner'}) {
+			$pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
+		}
+		push @projects, $pr;
+	}
 	git_header_html();
 	if (-f $home_text) {
 		print "<div class=\"index_include\">\n";
@@ -722,53 +829,57 @@ sub git_project_list {
 		print "</div>\n";
 	}
 	print "<table cellspacing=\"0\">\n" .
-	      "<tr>\n" .
-	      "<th>Project</th>\n" .
-	      "<th>Description</th>\n" .
-	      "<th>Owner</th>\n" .
-	      "<th>last change</th>\n" .
-	      "<th></th>\n" .
+	      "<tr>\n";
+	if (!defined($order) || (defined($order) && ($order eq "project"))) {
+		@projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
+		print "<th>Project</th>\n";
+	} else {
+		print "<th>" . $cgi->a({-class => "header", -href => esc_url("$my_uri?o=project")}, "Project") . "</th>\n";
+	}
+	if (defined($order) && ($order eq "descr")) {
+		@projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
+		print "<th>Description</th>\n";
+	} else {
+		print "<th>" . $cgi->a({-class => "header", -href => esc_url("$my_uri?o=descr")}, "Description") . "</th>\n";
+	}
+	if (defined($order) && ($order eq "owner")) {
+		@projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
+		print "<th>Owner</th>\n";
+	} else {
+		print "<th>" . $cgi->a({-class => "header", -href => esc_url("$my_uri?o=owner")}, "Owner") . "</th>\n";
+	}
+	if (defined($order) && ($order eq "age")) {
+		@projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
+		print "<th>Last Change</th>\n";
+	} else {
+		print "<th>" . $cgi->a({-class => "header", -href => esc_url("$my_uri?o=age")}, "Last Change") . "</th>\n";
+	}
+	print "<th></th>\n" .
 	      "</tr>\n";
 	my $alternate = 0;
-	foreach my $pr (@list) {
-		my %proj = %$pr;
-		my $head = git_read_hash("$proj{'path'}/HEAD");
-		if (!defined $head) {
-			next;
-		}
-		$ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
-		my %co = git_read_commit($head);
-		if (!%co) {
-			next;
-		}
-		my $descr = git_read_description($proj{'path'}) || "";
-		$descr = chop_str($descr, 25, 5);
-		# get directory owner if not already specified
-		if (!defined $proj{'owner'}) {
-			$proj{'owner'} = get_file_owner("$projectroot/$proj{'path'}") || "";
-		}
+	foreach my $pr (@projects) {
 		if ($alternate) {
 			print "<tr class=\"dark\">\n";
 		} else {
 			print "<tr class=\"light\">\n";
 		}
 		$alternate ^= 1;
-		print "<td>" . $cgi->a({-href => "$my_uri?p=$proj{'path'};a=summary", -class => "list"}, escapeHTML($proj{'path'})) . "</td>\n" .
-		      "<td>$descr</td>\n" .
-		      "<td><i>" . chop_str($proj{'owner'}, 15) . "</i></td>\n";
+		print "<td>" . $cgi->a({-href => esc_url("$my_uri?p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
+		      "<td>$pr->{'descr'}</td>\n" .
+		      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
 		my $colored_age;
-		if ($co{'age'} < 60*60*2) {
-			$colored_age = "<span style =\"color: #009900;\"><b><i>$co{'age_string'}</i></b></span>";
-		} elsif ($co{'age'} < 60*60*24*2) {
-			$colored_age = "<span style =\"color: #009900;\"><i>$co{'age_string'}</i></span>";
+		if ($pr->{'commit'}{'age'} < 60*60*2) {
+			$colored_age = "<span style =\"color: #009900;\"><b><i>$pr->{'commit'}{'age_string'}</i></b></span>";
+		} elsif ($pr->{'commit'}{'age'} < 60*60*24*2) {
+			$colored_age = "<span style =\"color: #009900;\"><i>$pr->{'commit'}{'age_string'}</i></span>";
 		} else {
-			$colored_age = "<i>$co{'age_string'}</i>";
+			$colored_age = "<i>$pr->{'commit'}{'age_string'}</i>";
 		}
 		print "<td>$colored_age</td>\n" .
 		      "<td class=\"link\">" .
-		      $cgi->a({-href => "$my_uri?p=$proj{'path'};a=summary"}, "summary") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$proj{'path'};a=shortlog"}, "shortlog") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$proj{'path'};a=log"}, "log") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$pr->{'path'};a=summary")}, "summary") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$pr->{'path'};a=shortlog")}, "shortlog") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$pr->{'path'};a=log")}, "log") .
 		      "</td>\n" .
 		      "</tr>\n";
 	}
@@ -803,23 +914,34 @@ sub git_read_refs {
 		my $type = git_get_type($ref_id) || next;
 		my %ref_item;
 		my %co;
+		$ref_item{'type'} = $type;
+		$ref_item{'id'} = $ref_id;
+		$ref_item{'epoch'} = 0;
+		$ref_item{'age'} = "unknown";
 		if ($type eq "tag") {
 			my %tag = git_read_tag($ref_id);
+			$ref_item{'comment'} = $tag{'comment'};
 			if ($tag{'type'} eq "commit") {
 				%co = git_read_commit($tag{'object'});
+				$ref_item{'epoch'} = $co{'committer_epoch'};
+				$ref_item{'age'} = $co{'age_string'};
+			} elsif (defined($tag{'epoch'})) {
+				my $age = time - $tag{'epoch'};
+				$ref_item{'epoch'} = $tag{'epoch'};
+				$ref_item{'age'} = age_string($age);
 			}
-			$ref_item{'type'} = $tag{'type'};
+			$ref_item{'reftype'} = $tag{'type'};
 			$ref_item{'name'} = $tag{'name'};
-			$ref_item{'id'} = $tag{'object'};
+			$ref_item{'refid'} = $tag{'object'};
 		} elsif ($type eq "commit"){
 			%co = git_read_commit($ref_id);
-			$ref_item{'type'} = "commit";
+			$ref_item{'reftype'} = "commit";
 			$ref_item{'name'} = $ref_file;
 			$ref_item{'title'} = $co{'title'};
-			$ref_item{'id'} = $ref_id;
+			$ref_item{'refid'} = $ref_id;
+			$ref_item{'epoch'} = $co{'committer_epoch'};
+			$ref_item{'age'} = $co{'age_string'};
 		}
-		$ref_item{'epoch'} = $co{'committer_epoch'} || 0;
-		$ref_item{'age'} = $co{'age_string'} || "unknown";
 
 		push @reflist, \%ref_item;
 	}
@@ -856,16 +978,16 @@ sub git_summary {
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
 	      "summary".
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$head"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$head"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree"}, "tree") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$head")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$head")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree")}, "tree") .
 	      "<br/><br/>\n" .
 	      "</div>\n";
 	print "<div class=\"title\">&nbsp;</div>\n";
 	print "<table cellspacing=\"0\">\n" .
-	      "<tr><td>description</td><td>" . escapeHTML($descr) . "</td></tr>\n" .
+	      "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
 	      "<tr><td>owner</td><td>$owner</td></tr>\n" .
 	      "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
 	      "</table>\n";
@@ -873,7 +995,7 @@ sub git_summary {
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd;
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=shortlog", -class => "title"}, "shortlog") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog"), -class => "title"}, "shortlog") .
 	      "</div>\n";
 	my $i = 16;
 	print "<table cellspacing=\"0\">\n";
@@ -889,18 +1011,23 @@ sub git_summary {
 		$alternate ^= 1;
 		if ($i-- > 0) {
 			print "<td><i>$co{'age_string'}</i></td>\n" .
-			      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
-			      "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"},
-			      "<b>" . escapeHTML($co{'title_short'}) . "</b>") .
-			      "</td>\n" .
+			      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
+			      "<td>";
+			if (length($co{'title_short'}) < length($co{'title'})) {
+				print $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
+			              "<b>" . esc_html($co{'title_short'}) . "</b>");
+			} else {
+				print $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "list"},
+				      "<b>" . esc_html($co{'title'}) . "</b>");
+			}
+			print "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "commitdiff") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit")}, "commit") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
 			      "</td>\n" .
 			      "</tr>";
 		} else {
-			print "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "...") . "</td>\n" .
+			print "<td>" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "...") . "</td>\n" .
 			"</tr>";
 			last;
 		}
@@ -910,13 +1037,18 @@ sub git_summary {
 	my $taglist = git_read_refs("refs/tags");
 	if (defined @$taglist) {
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=tags", -class => "title"}, "tags") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=tags"), -class => "title"}, "tags") .
 		      "</div>\n";
 		my $i = 16;
 		print "<table cellspacing=\"0\">\n";
 		my $alternate = 0;
 		foreach my $entry (@$taglist) {
 			my %tag = %$entry;
+			my $comment_lines = $tag{'comment'};
+			my $comment = shift @$comment_lines;
+			if (defined($comment)) {
+				$comment = chop_str($comment, 30, 5);
+			}
 			if ($alternate) {
 				print "<tr class=\"dark\">\n";
 			} else {
@@ -926,19 +1058,27 @@ sub git_summary {
 			if ($i-- > 0) {
 				print "<td><i>$tag{'age'}</i></td>\n" .
 				      "<td>" .
-				      $cgi->a({-href => "$my_uri?p=$project;a=$tag{'type'};h=$tag{'id'}", -class => "list"}, "<b>" .
-				      escapeHTML($tag{'name'}) . "</b>") .
+				      $cgi->a({-href => esc_url("$my_uri?p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
+				      "<b>" . esc_html($tag{'name'}) . "</b>") .
 				      "</td>\n" .
-				      "<td class=\"link\">" .
-				      $cgi->a({-href => "$my_uri?p=$project;a=$tag{'type'};h=$tag{'id'}"}, $tag{'type'});
-				if ($tag{'type'} eq "commit") {
-				      print " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'id'}"}, "shortlog") .
-				            " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$tag{'id'}"}, "log");
+				      "<td>";
+				if (defined($comment)) {
+				      print $cgi->a({-class => "list", -href => esc_url("$my_uri?p=$project;a=tag;h=$tag{'id'}")}, $comment);
+				}
+				print "</td>\n" .
+				      "<td class=\"link\">";
+				if ($tag{'type'} eq "tag") {
+				      print $cgi->a({-href => esc_url("$my_uri?p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
+				}
+				print $cgi->a({-href => esc_url("$my_uri?p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
+				if ($tag{'reftype'} eq "commit") {
+				      print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
+				            " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$tag{'refid'}")}, "log");
 				}
 				print "</td>\n" .
 				      "</tr>";
 			} else {
-				print "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=tags"}, "...") . "</td>\n" .
+				print "<td>" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tags")}, "...") . "</td>\n" .
 				"</tr>";
 				last;
 			}
@@ -946,15 +1086,15 @@ sub git_summary {
 		print "</table\n>";
 	}
 
-	my $branchlist = git_read_refs("refs/heads");
-	if (defined @$branchlist) {
+	my $headlist = git_read_refs("refs/heads");
+	if (defined @$headlist) {
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=branches", -class => "title"}, "branches") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=heads"), -class => "title"}, "heads") .
 		      "</div>\n";
 		my $i = 16;
 		print "<table cellspacing=\"0\">\n";
 		my $alternate = 0;
-		foreach my $entry (@$branchlist) {
+		foreach my $entry (@$headlist) {
 			my %tag = %$entry;
 			if ($alternate) {
 				print "<tr class=\"dark\">\n";
@@ -965,16 +1105,16 @@ sub git_summary {
 			if ($i-- > 0) {
 				print "<td><i>$tag{'age'}</i></td>\n" .
 				      "<td>" .
-				      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'name'}", -class => "list"},
-				      "<b>" . escapeHTML($tag{'name'}) . "</b>") .
+				      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"},
+				      "<b>" . esc_html($tag{'name'}) . "</b>") .
 				      "</td>\n" .
 				      "<td class=\"link\">" .
-				      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'name'}"}, "shortlog") .
-				      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$tag{'name'}"}, "log") .
+				      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
+				      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$tag{'name'}")}, "log") .
 				      "</td>\n" .
 				      "</tr>";
 			} else {
-				print "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=branches"}, "...") . "</td>\n" .
+				print "<td>" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=heads")}, "...") . "</td>\n" .
 				"</tr>";
 				last;
 			}
@@ -984,27 +1124,71 @@ sub git_summary {
 	git_footer_html();
 }
 
+sub git_tag {
+	my $head = git_read_hash("$project/HEAD");
+	git_header_html();
+	print "<div class=\"page_nav\">\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$head")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$head")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
+	      "<br/>\n" .
+	      "</div>\n";
+	my %tag = git_read_tag($hash);
+	print "<div>\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($tag{'name'})) . "\n" .
+	      "</div>\n";
+	print "<div class=\"title_text\">\n" .
+	      "<table cellspacing=\"0\">\n" .
+	      "<tr>\n" .
+	      "<td>object</td>\n" .
+	      "<td>" . $cgi->a({-class => "list", -href => esc_url("$my_uri?p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
+	      "<td class=\"link\">" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
+	      "</tr>\n";
+	if (defined($tag{'author'})) {
+		my %ad = date_str($tag{'epoch'}, $tag{'tz'});
+		print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
+		print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
+	}
+	print "</table>\n\n" .
+	      "</div>\n";
+	print "<div class=\"page_body\">";
+	my $comment = $tag{'comment'};
+	foreach my $line (@$comment) {
+		print esc_html($line) . "<br/>\n";
+	}
+	print "</div>\n";
+	git_footer_html();
+}
+
 sub git_tags {
 	my $head = git_read_hash("$project/HEAD");
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$head"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$head"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;hb=$head"}, "tree") . "<br/>\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$head")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$head")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
 	      "<br/>\n" .
 	      "</div>\n";
 	my $taglist = git_read_refs("refs/tags");
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary", -class => "title"}, "&nbsp;") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary"), -class => "title"}, "&nbsp;") .
 	      "</div>\n";
 	print "<table cellspacing=\"0\">\n";
 	my $alternate = 0;
 	if (defined @$taglist) {
 		foreach my $entry (@$taglist) {
 			my %tag = %$entry;
+			my $comment_lines = $tag{'comment'};
+			my $comment = shift @$comment_lines;
+			if (defined($comment)) {
+				$comment = chop_str($comment, 30, 5);
+			}
 			if ($alternate) {
 				print "<tr class=\"dark\">\n";
 			} else {
@@ -1013,14 +1197,22 @@ sub git_tags {
 			$alternate ^= 1;
 			print "<td><i>$tag{'age'}</i></td>\n" .
 			      "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'id'}", -class => "list"},
-			      "<b>" . escapeHTML($tag{'name'}) . "</b>") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
+			      "<b>" . esc_html($tag{'name'}) . "</b>") .
 			      "</td>\n" .
-			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=$tag{'type'};h=$tag{'id'}"}, $tag{'type'});
-			if ($tag{'type'} eq "commit") {
-			      print " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'name'}"}, "shortlog") .
-			            " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$tag{'id'}"}, "log");
+			      "<td>";
+			if (defined($comment)) {
+			      print $cgi->a({-class => "list", -href => esc_url("$my_uri?p=$project;a=tag;h=$tag{'id'}")}, $comment);
+			}
+			print "</td>\n" .
+			      "<td class=\"link\">";
+			if ($tag{'type'} eq "tag") {
+			      print $cgi->a({-href => esc_url("$my_uri?p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
+			}
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
+			if ($tag{'reftype'} eq "commit") {
+			      print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
+			            " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$tag{'refid'}")}, "log");
 			}
 			print "</td>\n" .
 			      "</tr>";
@@ -1030,21 +1222,21 @@ sub git_tags {
 	git_footer_html();
 }
 
-sub git_branches {
+sub git_heads {
 	my $head = git_read_hash("$project/HEAD");
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$head"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$head"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;hb=$head"}, "tree") . "<br/>\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$head")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$head")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
 	      "<br/>\n" .
 	      "</div>\n";
 	my $taglist = git_read_refs("refs/heads");
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary", -class => "title"}, "&nbsp;") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary"), -class => "title"}, "&nbsp;") .
 	      "</div>\n";
 	print "<table cellspacing=\"0\">\n";
 	my $alternate = 0;
@@ -1059,11 +1251,11 @@ sub git_branches {
 			$alternate ^= 1;
 			print "<td><i>$tag{'age'}</i></td>\n" .
 			      "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'name'}", -class => "list"}, "<b>" . escapeHTML($tag{'name'}) . "</b>") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
 			      "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$tag{'name'}"}, "shortlog") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$tag{'name'}"}, "log") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$tag{'name'}")}, "log") .
 			      "</td>\n" .
 			      "</tr>";
 		}
@@ -1108,20 +1300,24 @@ sub git_blob {
 		$hash = git_get_hash_by_path($base, $file_name, "blob");
 	}
 	open my $fd, "-|", "$gitbin/git-cat-file blob $hash" or die_error(undef, "Open failed.");
-	my $base = $file_name || "";
 	git_header_html();
 	if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 		print "<div class=\"page_nav\">\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "commitdiff") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash_base"}, "tree") . "<br/>\n";
-		print $cgi->a({-href => "$my_uri?p=$project;a=blob_plain;h=$hash"}, "plain") . "<br/>\n" .
-		      "</div>\n";
-		print "<div>" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") . "<br/>\n";
+		if (defined $file_name) {
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
+			" | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;hb=HEAD;f=$file_name")}, "head") . "<br/>\n";
+		} else {
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob_plain;h=$hash")}, "plain") . "<br/>\n";
+		}
+		print "</div>\n".
+		       "<div>" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
 		      "</div>\n";
 	} else {
 		print "<div class=\"page_nav\">\n" .
@@ -1142,7 +1338,7 @@ sub git_blob {
 				$line =~ s/\t/$spaces/;
 			}
 		}
-		printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, escapeHTML($line);
+		printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
 	}
 	close $fd or print "Reading blob failed.\n";
 	print "</div>";
@@ -1150,7 +1346,11 @@ sub git_blob {
 }
 
 sub git_blob_plain {
-	print $cgi->header(-type => "text/plain", -charset => 'utf-8');
+	my $save_as = "$hash.txt";
+	if (defined $file_name) {
+		$save_as = $file_name;
+	}
+	print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"$save_as\"");
 	open my $fd, "-|", "$gitbin/git-cat-file blob $hash" or return;
 	undef $/;
 	print <$fd>;
@@ -1180,16 +1380,16 @@ sub git_tree {
 	if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 		$base_key = ";hb=$hash_base";
 		print "<div class=\"page_nav\">\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash_base"}, "shortlog") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash_base"}, "log") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "commitdiff") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash_base")}, "shortlog") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash_base")}, "log") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
 		      " | tree" .
 		      "<br/><br/>\n" .
 		      "</div>\n";
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 		      "</div>\n";
 	} else {
 		print "<div class=\"page_nav\">\n";
@@ -1222,18 +1422,18 @@ sub git_tree {
 		print "<td style=\"font-family:monospace\">" . mode_str($t_mode) . "</td>\n";
 		if ($t_type eq "blob") {
 			print "<td class=\"list\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$t_hash" . $base_key . $file_key, -class => "list"}, $t_name) .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$t_hash" . $base_key . $file_key), -class => "list"}, $t_name) .
 			      "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$t_hash" . $base_key . $file_key}, "blob") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash_base" . $file_key}, "history") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$t_hash" . $base_key . $file_key)}, "blob") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=history;h=$hash_base" . $file_key)}, "history") .
 			      "</td>\n";
 		} elsif ($t_type eq "tree") {
 			print "<td class=\"list\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$t_hash" . $base_key . $file_key}, $t_name) .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$t_hash" . $base_key . $file_key)}, $t_name) .
 			      "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$t_hash" . $base_key . $file_key}, "tree") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$t_hash" . $base_key . $file_key)}, "tree") .
 			      "</td>\n";
 		}
 		print "</tr>\n";
@@ -1245,35 +1445,53 @@ sub git_tree {
 
 sub git_rss {
 	# http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
-	open my $fd, "-|", "$gitbin/git-rev-list --max-count=20 " . git_read_hash("$project/HEAD") or die_error(undef, "Open failed.");
+	open my $fd, "-|", "$gitbin/git-rev-list --max-count=150 " . git_read_hash("$project/HEAD") or die_error(undef, "Open failed.");
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading rev-list failed.");
-
 	print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
 	print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
 	      "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
 	print "<channel>\n";
 	print "<title>$project</title>\n".
-	      "<link>" . escapeHTML("$my_url?p=$project;a=summary") . "</link>\n".
+	      "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
 	      "<description>$project log</description>\n".
 	      "<language>en</language>\n";
 
-	foreach my $commit (@revlist) {
+	for (my $i = 0; $i <= $#revlist; $i++) {
+		my $commit = $revlist[$i];
 		my %co = git_read_commit($commit);
+		# we read 150, we always show 30 and the ones more recent than 48 hours
+		if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
+			last;
+		}
 		my %cd = date_str($co{'committer_epoch'});
+		open $fd, "-|", "$gitbin/git-diff-tree -r $co{'parent'} $co{'id'}" or next;
+		my @difftree = map { chomp; $_ } <$fd>;
+		close $fd or next;
 		print "<item>\n" .
 		      "<title>" .
-		      sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . escapeHTML($co{'title'}) .
+		      sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
 		      "</title>\n" .
+		      "<author>" . esc_html($co{'author'}) . "</author>\n" .
 		      "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
-		      "<link>" . escapeHTML("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
-		      "<description>" . escapeHTML($co{'title'}) . "</description>\n" .
+		      "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
+		      "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
+		      "<description>" . esc_html($co{'title'}) . "</description>\n" .
 		      "<content:encoded>" .
 		      "<![CDATA[\n";
 		my $comment = $co{'comment'};
 		foreach my $line (@$comment) {
+			$line = decode("utf8", $line, Encode::FB_DEFAULT);
 			print "$line<br/>\n";
 		}
+		print "<br/>\n";
+		foreach my $line (@difftree) {
+			if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
+				next;
+			}
+			my $file = $7;
+			print "$file<br/>\n";
+		}
 		print "]]>\n" .
 		      "</content:encoded>\n" .
 		      "</item>\n";
@@ -1305,7 +1523,7 @@ sub git_opml {
 			next;
 		}
 
-		my $path = escapeHTML(chop_str($proj{'path'}, 25, 5));
+		my $path = esc_html(chop_str($proj{'path'}, 25, 5));
 		my $rss =  "$my_url?p=$proj{'path'};a=rss";
 		my $html =  "$my_url?p=$proj{'path'};a=summary";
 		print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
@@ -1325,12 +1543,12 @@ sub git_log {
 	}
 	git_header_html();
 	print "<div class=\"page_nav\">\n";
-	print $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash"}, "shortlog") .
+	print $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash")}, "shortlog") .
 	      " | log" .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash;hb=$hash"}, "tree") . "<br/>\n";
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
 	my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
 	open my $fd, "-|", "$gitbin/git-rev-list $limit $hash" or die_error(undef, "Open failed.");
@@ -1338,19 +1556,19 @@ sub git_log {
 	close $fd;
 
 	if ($hash ne $head || $page) {
-		print $cgi->a({-href => "$my_uri?p=$project;a=log"}, "HEAD");
+		print $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "HEAD");
 	} else {
 		print "HEAD";
 	}
 	if ($page > 0) {
 		print " &sdot; " .
-		$cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash;pg=" . ($page-1), -accesskey => "p", -title => "Alt-p"}, "prev");
+		$cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
 	} else {
 		print " &sdot; prev";
 	}
 	if ($#revlist >= (100 * ($page+1)-1)) {
 		print " &sdot; " .
-		$cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash;pg=" . ($page+1), -accesskey => "n", -title => "Alt-n"}, "next");
+		$cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
 	} else {
 		print " &sdot; next";
 	}
@@ -1358,7 +1576,7 @@ sub git_log {
 	      "</div>\n";
 	if (!@revlist) {
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=summary", -class => "title"}, "&nbsp;") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary"), -class => "title"}, "&nbsp;") .
 		      "</div>\n";
 		my %co = git_read_commit($hash);
 		print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
@@ -1369,16 +1587,16 @@ sub git_log {
 		next if !%co;
 		my %ad = date_str($co{'author_epoch'});
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "title"},
-		      "<span class=\"age\">$co{'age_string'}</span>" . escapeHTML($co{'title'})) . "\n" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "title"},
+		      "<span class=\"age\">$co{'age_string'}</span>" . esc_html($co{'title'})) . "\n" .
 		      "</div>\n";
 		print "<div class=\"title_text\">\n" .
 		      "<div class=\"log_link\">\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "commitdiff") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
 		      "<br/>\n" .
 		      "</div>\n" .
-		      "<i>" . escapeHTML($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
+		      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
 		      "</div>\n" .
 		      "<div class=\"log_body\">\n";
 		my $comment = $co{'comment'};
@@ -1395,7 +1613,7 @@ sub git_log {
 			} else {
 				$empty = 0;
 			}
-			print escapeHTML($line) . "<br/>\n";
+			print format_log_line_html($line) . "<br/>\n";
 		}
 		if (!$empty) {
 			print "<br/>\n";
@@ -1415,35 +1633,43 @@ sub git_commit {
 
 	my @difftree;
 	my $root = "";
-	if (!defined $co{'parent'}) {
+	my $parent = $co{'parent'};
+	if (!defined $parent) {
 		$root = " --root";
+		$parent = "";
 	}
-	open my $fd, "-|", "$gitbin/git-diff-tree -r -M $root $co{'parent'} $hash" or die_error(undef, "Open failed.");
+	open my $fd, "-|", "$gitbin/git-diff-tree -r -M $root $parent $hash" or die_error(undef, "Open failed.");
 	@difftree = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading diff-tree failed.");
-	git_header_html();
+
+	# non-textual hash id's can be cached
+	my $expires;
+	if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		$expires = "+1d";
+	}
+	git_header_html(undef, $expires);
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash"}, "log") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash")}, "log") .
 	      " | commit";
 	if (defined $co{'parent'}) {
-		print " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "commitdiff");
+		print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash")}, "commitdiff");
 	}
-	print " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"}, "tree") . "\n" .
+	print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") . "\n" .
 	      "<br/><br/></div>\n";
 	if (defined $co{'parent'}) {
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 		      "</div>\n";
 	} else {
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 		      "</div>\n";
 	}
 	print "<div class=\"title_text\">\n" .
 	      "<table cellspacing=\"0\">\n";
-	print "<tr><td>author</td><td>" . escapeHTML($co{'author'}) . "</td></tr>\n".
+	print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
 	      "<tr>" .
 	      "<td></td><td> $ad{'rfc2822'}";
 	if ($ad{'hour_local'} < 6) {
@@ -1453,25 +1679,25 @@ sub git_commit {
 	}
 	print "</td>" .
 	      "</tr>\n";
-	print "<tr><td>committer</td><td>" . escapeHTML($co{'committer'}) . "</td></tr>\n";
+	print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
 	print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
-	print "<tr><td>commit</td><td style=\"font-family:monospace\">$hash</td></tr>\n";
+	print "<tr><td>commit</td><td style=\"font-family:monospace\">$co{'id'}</td></tr>\n";
 	print "<tr>" .
 	      "<td>tree</td>" .
 	      "<td style=\"font-family:monospace\">" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash", class => "list"}, $co{'tree'}) .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
 	      "</td>" .
-	      "<td class=\"link\">" . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"}, "tree") .
+	      "<td class=\"link\">" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
 	      "</td>" .
 	      "</tr>\n";
 	my $parents  = $co{'parents'};
 	foreach my $par (@$parents) {
 		print "<tr>" .
 		      "<td>parent</td>" .
-		      "<td style=\"font-family:monospace\">" . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$par", class => "list"}, $par) . "</td>" .
+		      "<td style=\"font-family:monospace\">" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
 		      "<td class=\"link\">" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$par"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash;hp=$par"}, "commitdiff") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$par")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
 		      "</td>" .
 		      "</tr>\n";
 	}
@@ -1493,12 +1719,10 @@ sub git_commit {
 		}
 		if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
 			$signed = 1;
-			print "<span style=\"color: #888888\">" . escapeHTML($line) . "</span><br/>\n";
+			print "<span style=\"color: #888888\">" . esc_html($line) . "</span><br/>\n";
 		} else {
 			$signed = 0;
-			$line = escapeHTML($line);
-			$line =~ s/ /&nbsp;/g;
-			print "$line<br/>\n";
+			print format_log_line_html($line) . "<br/>\n";
 		}
 	}
 	print "</div>\n";
@@ -1512,7 +1736,9 @@ sub git_commit {
 	foreach my $line (@difftree) {
 		# ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
 		# ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
-		$line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/;
+		if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
+			next;
+		}
 		my $from_mode = $1;
 		my $to_mode = $2;
 		my $from_id = $3;
@@ -1520,7 +1746,6 @@ sub git_commit {
 		my $status = $5;
 		my $similarity = $6;
 		my $file = $7;
-		#print "$line ($status)<br/>\n";
 		if ($alternate) {
 			print "<tr class=\"dark\">\n";
 		} else {
@@ -1533,16 +1758,16 @@ sub git_commit {
 				$mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
 			}
 			print "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hp=$hash;f=$file", -class => "list"}, escapeHTML($file)) . "</td>\n" .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
 			      "<td><span style=\"color: #008000;\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
-			      "<td class=\"link\">" . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, "blob") . "</td>\n";
+			      "<td class=\"link\">" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
 		} elsif ($status eq "D") {
 			print "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file", -class => "list"}, escapeHTML($file)) . "</td>\n" .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
 			      "<td><span style=\"color: #c00000;\">[deleted " . file_type($from_mode). "]</span></td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file"}, "blob") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=history;h=$hash;f=$file")}, "history") .
 			      "</td>\n"
 		} elsif ($status eq "M" || $status eq "T") {
 			my $mode_chnge = "";
@@ -1562,18 +1787,18 @@ sub git_commit {
 			}
 			print "<td>";
 			if ($to_id ne $from_id) {
-				print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file", -class => "list"}, escapeHTML($file));
+				print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
 			} else {
-				print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file", -class => "list"}, escapeHTML($file));
+				print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
 			}
 			print "</td>\n" .
 			      "<td>$mode_chnge</td>\n" .
 			      "<td class=\"link\">";
-			print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, "blob");
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
 			if ($to_id ne $from_id) {
-				print " | " . $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"}, "diff");
+				print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
 			}
-			print " | " . $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") . "\n";
+			print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=history;h=$hash;f=$file")}, "history") . "\n";
 			print "</td>\n";
 		} elsif ($status eq "R") {
 			my ($from_file, $to_file) = split "\t", $file;
@@ -1582,14 +1807,14 @@ sub git_commit {
 				$mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
 			}
 			print "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file", -class => "list"}, escapeHTML($to_file)) . "</td>\n" .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
 			      "<td><span style=\"color: #777777;\">[moved from " .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file", -class => "list"}, escapeHTML($from_file)) .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
 			      " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"}, "blob");
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
 			if ($to_id ne $from_id) {
-				print " | " . $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file"}, "diff");
+				print " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
 			}
 			print "</td>\n";
 		}
@@ -1604,17 +1829,17 @@ sub git_blobdiff {
 	git_header_html();
 	if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 		print "<div class=\"page_nav\">\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "commitdiff") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash_base"}, "tree") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") .
 		      "<br/>\n";
-		print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent"}, "plain") .
+		print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain") .
 		      "</div>\n";
 		print "<div>\n" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 		      "</div>\n";
 	} else {
 		print "<div class=\"page_nav\">\n" .
@@ -1626,9 +1851,9 @@ sub git_blobdiff {
 	}
 	print "<div class=\"page_body\">\n" .
 	      "<div class=\"diff_info\">blob:" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name"}, $hash_parent) .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
 	      " -> blob:" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name"}, $hash) .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
 	      "</div>\n";
 	git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
 	print "</div>";
@@ -1654,18 +1879,23 @@ sub git_commitdiff {
 	my (@difftree) = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading diff-tree failed.");
 
-	git_header_html();
+	# non-textual hash id's can be cached
+	my $expires;
+	if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		$expires = "+1d";
+	}
+	git_header_html(undef, $expires);
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash")}, "commit") .
 	      " | commitdiff" .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"}, "tree") . "<br/>\n";
-	print $cgi->a({-href => "$my_uri?p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent"}, "plain") . "\n" .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") . "<br/>\n";
+	print $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain") . "\n" .
 	      "</div>\n";
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 	      "</div>\n";
 	print "<div class=\"page_body\">\n";
 	my $comment = $co{'comment'};
@@ -1689,9 +1919,7 @@ sub git_commitdiff {
 		} else {
 			$empty = 0;
 		}
-		$line = escapeHTML($line);
-		$line =~ s/ /&nbsp;/g;
-		print "$line<br/>\n";
+		print format_log_line_html($line) . "<br/>\n";
 	}
 	print "<br/>\n";
 	foreach my $line (@difftree) {
@@ -1706,20 +1934,20 @@ sub git_commitdiff {
 		my $file = $6;
 		if ($status eq "A") {
 			print "<div class=\"diff_info\">" .  file_type($to_mode) . ":" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, $to_id) . "(new)" .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
 			      "</div>\n";
 			git_diff_print(undef, "/dev/null", $to_id, "b/$file");
 		} elsif ($status eq "D") {
 			print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file"}, $from_id) . "(deleted)" .
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
 			      "</div>\n";
 			git_diff_print($from_id, "a/$file", undef, "/dev/null");
 		} elsif ($status eq "M") {
 			if ($from_id ne $to_id) {
 				print "<div class=\"diff_info\">" .
-				      file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file"}, $from_id) .
+				      file_type($from_mode) . ":" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
 				      " -> " .
-				      file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, $to_id);
+				      file_type($to_mode) . ":" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
 				print "</div>\n";
 				git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
 			}
@@ -1742,7 +1970,7 @@ sub git_commitdiff_plain {
 	my $tags = git_read_refs("refs/tags");
 	foreach my $entry (@$tags) {
 		my %tag = %$entry;
-		$taghash{$tag{'id'}} = $tag{'name'};
+		$taghash{$tag{'refid'}} = $tag{'name'};
 	}
 	open $fd, "-|", "$gitbin/git-rev-list HEAD";
 	while (my $commit = <$fd>) {
@@ -1756,7 +1984,7 @@ sub git_commitdiff_plain {
 	}
 	close $fd;
 
-	print $cgi->header(-type => "text/plain", -charset => 'utf-8');
+	print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
 	my %co = git_read_commit($hash);
 	my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
 	my $comment = $co{'comment'};
@@ -1800,20 +2028,20 @@ sub git_history {
 	}
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"}, "tree") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
 	      "<br/><br/>\n" .
 	      "</div>\n";
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 	      "</div>\n";
 	print "<div class=\"page_path\"><b>/$file_name</b><br/></div>\n";
 
-	open my $fd, "-|", "$gitbin/git-rev-list $hash | $gitbin/git-diff-tree -r --stdin $file_name";
+	open my $fd, "-|", "$gitbin/git-rev-list $hash | $gitbin/git-diff-tree -r --stdin \'$file_name\'";
 	my $commit;
 	print "<table cellspacing=\"0\">\n";
 	my $alternate = 0;
@@ -1834,17 +2062,18 @@ sub git_history {
 			}
 			$alternate ^= 1;
 			print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
-			      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
-			      "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"}, "<b>" .
-			      escapeHTML(chop_str($co{'title'}, 50)) . "</b>") . "</td>\n" .
+			      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
+			      "<td>" . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
+			      esc_html(chop_str($co{'title'}, 50)) . "</b>") . "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=blob;hb=$commit;f=$file_name"}, "blob");
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit")}, "commit") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;hb=$commit;f=$file_name")}, "blob");
 			my $blob = git_get_hash_by_path($hash, $file_name);
 			my $blob_parent = git_get_hash_by_path($commit, $file_name);
 			if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
 				print " | " .
-				$cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name"},
+				$cgi->a({-href => esc_url("$my_uri?p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
 				"diff to current");
 			}
 			print "</td>\n" .
@@ -1884,23 +2113,23 @@ sub git_search {
 	}
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary;h=$hash"}, "summary") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "shortlog") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash"}, "tree") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary;h=$hash")}, "summary") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "shortlog") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
 	      "<br/><br/>\n" .
 	      "</div>\n";
 
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
 	      "</div>\n";
 	print "<table cellspacing=\"0\">\n";
 	my $alternate = 0;
 	if ($commit_search) {
 		$/ = "\0";
-		open my $fd, "-|", "$gitbin/git-rev-list --header $hash";
+		open my $fd, "-|", "$gitbin/git-rev-list --header --parents $hash" or next;
 		while (my $commit_text = <$fd>) {
 			if (!grep m/$searchtext/i, $commit_text) {
 				next;
@@ -1912,8 +2141,7 @@ sub git_search {
 				next;
 			}
 			my @commit_lines = split "\n", $commit_text;
-			my $commit = shift @commit_lines;
-			my %co = git_read_commit($commit, \@commit_lines);
+			my %co = git_read_commit(undef, \@commit_lines);
 			if (!%co) {
 				next;
 			}
@@ -1924,16 +2152,16 @@ sub git_search {
 			}
 			$alternate ^= 1;
 			print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
-			      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
+			      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
 			      "<td>" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"}, "<b>" . escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
 			my $comment = $co{'comment'};
 			foreach my $line (@$comment) {
 				if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
-					my $lead = escapeHTML($1) || "";
+					my $lead = esc_html($1) || "";
 					$lead = chop_str($lead, 30, 10);
-					my $match = escapeHTML($2) || "";
-					my $trail = escapeHTML($3) || "";
+					my $match = esc_html($2) || "";
+					my $trail = esc_html($3) || "";
 					$trail = chop_str($trail, 30, 10);
 					my $text = "$lead<span style=\"color:#e00000\">$match</span>$trail";
 					print chop_str($text, 80, 5) . "<br/>\n";
@@ -1941,8 +2169,8 @@ sub git_search {
 			}
 			print "</td>\n" .
 			      "<td class=\"link\">" .
-			      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-			      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$commit"}, "tree");
+			      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$co{'id'}")}, "commit") .
+			      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
 			print "</td>\n" .
 			      "</tr>\n";
 		}
@@ -1951,7 +2179,7 @@ sub git_search {
 
 	if ($pickaxe_search) {
 		$/ = "\n";
-		open my $fd, "-|", "$gitbin/git-rev-list $hash | $gitbin/git-diff-tree -r --stdin -S$searchtext";
+		open my $fd, "-|", "$gitbin/git-rev-list $hash | $gitbin/git-diff-tree -r --stdin -S\'$searchtext\'";
 		undef %co;
 		my @files;
 		while (my $line = <$fd>) {
@@ -1968,7 +2196,7 @@ sub git_search {
 					next;
 				}
 				push @files, \%set;
-			} elsif ($line =~ m/^([0-9a-fA-F]{40}) /){
+			} elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
 				if (%co) {
 					if ($alternate) {
 						print "<tr class=\"dark\">\n";
@@ -1977,20 +2205,20 @@ sub git_search {
 					}
 					$alternate ^= 1;
 					print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
-					      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
+					      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
 					      "<td>" .
-					      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}", -class => "list"}, "<b>" .
-					      escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
+					      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
+					      esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
 					while (my $setref = shift @files) {
 						my %set = %$setref;
-						print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}", class => "list"},
-						      "<span style=\"color:#e00000\">" . escapeHTML($set{'file'}) . "</span>") .
+						print $cgi->a({-href => esc_url("$my_uri?p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
+						      "<span style=\"color:#e00000\">" . esc_html($set{'file'}) . "</span>") .
 						      "<br/>\n";
 					}
 					print "</td>\n" .
 					      "<td class=\"link\">" .
-					      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}"}, "commit") .
-					      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}"}, "tree");
+					      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$co{'id'}")}, "commit") .
+					      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
 					print "</td>\n" .
 					      "</tr>\n";
 				}
@@ -2013,12 +2241,12 @@ sub git_shortlog {
 	}
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary"}, "summary") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary")}, "summary") .
 	      " | shortlog" .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=log;h=$hash"}, "log") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "commitdiff") .
-	      " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash;hb=$hash"}, "tree") . "<br/>\n";
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=log;h=$hash")}, "log") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$hash")}, "commit") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
+	      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
 	my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
 	open my $fd, "-|", "$gitbin/git-rev-list $limit $hash" or die_error(undef, "Open failed.");
@@ -2026,26 +2254,26 @@ sub git_shortlog {
 	close $fd;
 
 	if ($hash ne $head || $page) {
-		print $cgi->a({-href => "$my_uri?p=$project;a=shortlog"}, "HEAD");
+		print $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog")}, "HEAD");
 	} else {
 		print "HEAD";
 	}
 	if ($page > 0) {
 		print " &sdot; " .
-		$cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page-1), -accesskey => "p", -title => "Alt-p"}, "prev");
+		$cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
 	} else {
 		print " &sdot; prev";
 	}
 	if ($#revlist >= (100 * ($page+1)-1)) {
 		print " &sdot; " .
-		$cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page+1), -accesskey => "n", -title => "Alt-n"}, "next");
+		$cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
 	} else {
 		print " &sdot; next";
 	}
 	print "<br/>\n" .
 	      "</div>\n";
 	print "<div>\n" .
-	      $cgi->a({-href => "$my_uri?p=$project;a=summary", -class => "title"}, "&nbsp;") .
+	      $cgi->a({-href => esc_url("$my_uri?p=$project;a=summary"), -class => "title"}, "&nbsp;") .
 	      "</div>\n";
 	print "<table cellspacing=\"0\">\n";
 	my $alternate = 0;
@@ -2060,19 +2288,26 @@ sub git_shortlog {
 		}
 		$alternate ^= 1;
 		print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
-		      "<td><i>" . escapeHTML(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
-		      "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"}, "<b>" .
-		      escapeHTML($co{'title_short'}) . "</b>") . "</td>\n" .
+		      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
+		      "<td>";
+		if (length($co{'title_short'}) < length($co{'title'})) {
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
+			      "<b>" . esc_html($co{'title_short'}) . "</b>");
+		} else {
+			print $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit"), -class => "list"},
+			      "<b>" . esc_html($co{'title_short'}) . "</b>");
+		}
+		print "</td>\n" .
 		      "<td class=\"link\">" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") .
-		      " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "commitdiff") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=commit;h=$commit")}, "commit") .
+		      " | " . $cgi->a({-href => esc_url("$my_uri?p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
 		      "</td>\n" .
 		      "</tr>";
 	}
 	if ($#revlist >= (100 * ($page+1)-1)) {
 		print "<tr>\n" .
 		      "<td>" .
-		      $cgi->a({-href => "$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page+1), -title => "Alt-n"}, "next") .
+		      $cgi->a({-href => esc_url("$my_uri?p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -title => "Alt-n"}, "next") .
 		      "</td>\n" .
 		      "</tr>\n";
 	}