add Expires: +1d header to commit and commitdiff pages
[git.git] / gitweb.cgi
index 695cadd..873b7ce 100755 (executable)
@@ -5,7 +5,7 @@
 # (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;
@@ -15,14 +15,14 @@ use CGI::Carp qw(fatalsToBrowser);
 use Fcntl ':mode';
 
 my $cgi = new CGI;
-my $version =          "236";
+my $version =          "247";
 my $my_url =           $cgi->url();
 my $my_uri =           $cgi->url(-absolute => 1);
 my $rss_link = "";
 
 # absolute fs-path which will be prepended to the project path
-my $projectroot =      "/pub/scm";
-$projectroot = "/home/kay/public_html/pub/scm";
+#my $projectroot =     "/pub/scm";
+my $projectroot = "/home/kay/public_html/pub/scm";
 
 # location of the git-core binaries
 my $gitbin =           "/usr/bin";
@@ -43,7 +43,7 @@ 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.");
        }
@@ -56,15 +56,19 @@ 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;
@@ -83,54 +87,39 @@ 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.");
        }
@@ -145,11 +134,26 @@ 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();
@@ -204,6 +208,7 @@ if (!defined $action || $action eq "summary") {
 
 sub git_header_html {
        my $status = shift || "200 OK";
+       my $expires = shift;
 
        my $title = "git";
        if (defined $project) {
@@ -212,7 +217,7 @@ 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">
@@ -228,7 +233,7 @@ 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; }
@@ -293,11 +298,19 @@ EOF
                if (!defined $searchtext) {
                        $searchtext = "";
                }
+               my $search_hash;
+               if (defined $hash) {
+                       $search_hash = $hash;
+               } else {
+                       $search_hash  = "HEAD";
+               }
                $cgi->param("a", "search");
+               $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";
@@ -314,7 +327,7 @@ sub git_footer_html {
                }
                print $cgi->a({-href => "$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 $cgi->a({-href => "$my_uri?a=opml", -class => "rss_logo"}, "OPML") . "\n";
        }
        print "</div>\n" .
              "</body>\n" .
@@ -439,21 +452,28 @@ sub git_read_commit {
 
        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;
@@ -472,15 +492,12 @@ 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 //;
@@ -498,10 +515,15 @@ 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;
@@ -613,12 +635,15 @@ 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 {
@@ -753,9 +778,30 @@ 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 $home_text) {
                print "<div class=\"index_include\">\n";
@@ -765,53 +811,57 @@ sub git_project_list {
                print "</div>\n";
        }
        print "<table cellspacing=\"0\">\n" .
-             "<tr>\n" .
-             "<th>Project</th>\n" .
-             "<th>Description</th>\n" .
-             "<th>Owner</th>\n" .
-             "<th>last change</th>\n" .
-             "<th></th>\n" .
+             "<tr>\n";
+       if (!defined($order) || (defined($order) && ($order eq "project"))) {
+               @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
+               print "<th>Project</th>\n";
+       } else {
+               print "<th>" . $cgi->a({-class => "header", -href => "$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>" . $cgi->a({-class => "header", -href => "$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>" . $cgi->a({-class => "header", -href => "$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>" . $cgi->a({-class => "header", -href => "$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>" . $cgi->a({-href => "$my_uri?p=$pr->{'path'};a=summary", -class => "list"}, escapeHTML($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") .
+                     $cgi->a({-href => "$my_uri?p=$pr->{'path'};a=summary"}, "summary") .
+                     " | " . $cgi->a({-href => "$my_uri?p=$pr->{'path'};a=shortlog"}, "shortlog") .
+                     " | " . $cgi->a({-href => "$my_uri?p=$pr->{'path'};a=log"}, "log") .
                      "</td>\n" .
                      "</tr>\n";
        }
@@ -944,10 +994,15 @@ sub git_summary {
                if ($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($co{'title_short'}) . "</b>") .
-                             "</td>\n" .
+                             "<td>";
+                       if (length($co{'title_short'}) < length($co{'title'})) {
+                               print $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list", -title => "$co{'title'}"},
+                                     "<b>" . escapeHTML($co{'title_short'}) . "</b>");
+                       } else {
+                               print $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"},
+                                     "<b>" . escapeHTML($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") .
@@ -1013,15 +1068,15 @@ 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") .
+                     $cgi->a({-href => "$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";
@@ -1041,7 +1096,7 @@ sub git_summary {
                                      "</td>\n" .
                                      "</tr>";
                        } else {
-                               print "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=branches"}, "...") . "</td>\n" .
+                               print "<td>" . $cgi->a({-href => "$my_uri?p=$project;a=heads"}, "...") . "</td>\n" .
                                "</tr>";
                                last;
                        }
@@ -1069,7 +1124,11 @@ sub git_tag {
              "</div>\n";
        print "<div class=\"title_text\">\n" .
              "<table cellspacing=\"0\">\n" .
-             "<tr><td>$tag{'type'}</td><td>" . $cgi->a({-class => "text", -href => "$my_uri?p=$project;a=$tag{'type'};h=$tag{'object'}"}, $tag{'object'}) . "</td></tr>\n";
+             "<tr>\n" .
+             "<td>object</td>\n" .
+             "<td>" . $cgi->a({-class => "list", -href => "$my_uri?p=$project;a=$tag{'type'};h=$tag{'object'}"}, $tag{'object'}) . "</td>\n" .
+             "<td class=\"link\">" . $cgi->a({-href => "$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'}, $tag{'tz'});
                print "<tr><td>author</td><td>" . escapeHTML($tag{'author'}) . "</td></tr>\n";
@@ -1145,7 +1204,7 @@ 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" .
@@ -1223,7 +1282,6 @@ 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" .
@@ -1233,9 +1291,13 @@ sub git_blob {
                      " | " . $cgi->a({-href => "$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>" .
+               if (defined $file_name) {
+                       print $cgi->a({-href => "$my_uri?p=$project;a=blob_plain;h=$hash;f=$file_name"}, "plain") . "<br/>\n";
+               } else {
+                       print $cgi->a({-href => "$my_uri?p=$project;a=blob_plain;h=$hash"}, "plain") . "<br/>\n";
+               }
+               print "</div>\n".
+                      "<div>" .
                      $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) .
                      "</div>\n";
        } else {
@@ -1265,7 +1327,11 @@ 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>;
@@ -1360,10 +1426,9 @@ 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 $cgi->header(-type => 'text/xml', -charset => 'utf-8');
        print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
              "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
@@ -1373,14 +1438,24 @@ sub git_rss {
              "<description>$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'}) .
                      "</title>\n" .
+                     "<author>" . escapeHTML($co{'author'}) . "</author>\n" .
                      "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
+                     "<guid isPermaLink=\"true\">" . escapeHTML("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
                      "<link>" . escapeHTML("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
                      "<description>" . escapeHTML($co{'title'}) . "</description>\n" .
                      "<content:encoded>" .
@@ -1389,6 +1464,14 @@ sub git_rss {
                foreach my $line (@$comment) {
                        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";
@@ -1538,7 +1621,13 @@ sub git_commit {
        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") .
@@ -1572,7 +1661,7 @@ sub git_commit {
              "</tr>\n";
        print "<tr><td>committer</td><td>" . escapeHTML($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\">" .
@@ -1649,7 +1738,7 @@ 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" .
+                             $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file", -class => "list"}, escapeHTML($file)) . "</td>\n" .
                              "<td><span style=\"color: #008000;\">[new " . file_type($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";
                } elsif ($status eq "D") {
@@ -1770,7 +1859,12 @@ 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") .
@@ -1870,7 +1964,7 @@ 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'};
@@ -2014,7 +2108,7 @@ sub git_search {
        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;
@@ -2026,8 +2120,7 @@ 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;
                        }
@@ -2040,7 +2133,7 @@ sub git_search {
                        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>" .
-                             $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"}, "<b>" . escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
+                             $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}", -class => "list"}, "<b>" . escapeHTML(chop_str($co{'title'}, 50)) . "</b><br/>");
                        my $comment = $co{'comment'};
                        foreach my $line (@$comment) {
                                if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
@@ -2055,8 +2148,8 @@ 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");
+                             $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$co{'id'}"}, "commit") .
+                             " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}"}, "tree");
                        print "</td>\n" .
                              "</tr>\n";
                }
@@ -2082,7 +2175,7 @@ sub git_search {
                                        next;
                                }
                                push @files, \%set;
-                       } elsif ($line =~ m/^([0-9a-fA-F]{40}) /){
+                       } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
                                if (%co) {
                                        if ($alternate) {
                                                print "<tr class=\"dark\">\n";
@@ -2175,8 +2268,15 @@ 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($co{'title_short'}) . "</b>") . "</td>\n" .
+                     "<td>";
+               if (length($co{'title_short'}) < length($co{'title'})) {
+                       print $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list", -title => "$co{'title'}"},
+                             "<b>" . escapeHTML($co{'title_short'}) . "</b>");
+               } else {
+                       print $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "list"},
+                             "<b>" . escapeHTML($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") .