096786b932b5399cb4a50db3f66640c07e57132f
   1#!/usr/bin/perl
   2
   3# gitweb.pl - simple web interface to track changes in git repositories
   4#
   5# (C) 2005, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke <ch@gierke.de>
   7#
   8# This file is licensed under the GPL v2, or a later version
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML);
  13use CGI::Carp qw(fatalsToBrowser);
  14
  15my $cgi = new CGI;
  16
  17my $version = "049";
  18my $projectroot =       "/";
  19my $defaultprojects =   "home/kay/public_html";
  20my $gitbin =            "/home/kay/bin/git";
  21my $gittmp =            "/tmp";
  22my $my_url =            $cgi->url();
  23my $my_uri =            $cgi->url(-absolute => 1);
  24
  25my $project = $cgi->param('p');
  26my $action = $cgi->param('a');
  27my $hash = $cgi->param('h');
  28my $hash_parent = $cgi->param('hp');
  29my $time_back = $cgi->param('t');
  30if (!(defined($time_back))) {
  31        $time_back = 1;
  32}
  33$ENV{'SHA1_FILE_DIRECTORY'} = "$projectroot/$project/.git/objects";
  34
  35# sanitize input
  36$action =~ s/[^0-9a-zA-Z\.\-]//g;
  37$project =~ s/\/\.//g;
  38$project =~ s/^\/+//g;
  39$project =~ s/\/+$//g;
  40$project =~ s/|//g;
  41$hash =~ s/[^0-9a-fA-F]//g;
  42$hash_parent =~ s/[^0-9a-fA-F]//g;
  43$time_back =~ s/[^0-9]+//g;
  44
  45sub git_header_html {
  46        print $cgi->header(-type => 'text/html', -charset => 'utf-8');
  47print <<EOF;
  48<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  49<html>
  50<head>
  51        <title>git - $project $action</title>
  52        <link rel="alternate" title="$project log" href="$my_uri?p=$project;a=rss" type="application/rss+xml"/>
  53        <style type="text/css">
  54                body { font-family: sans-serif; font-size: 12px; margin:0px; }
  55                a { color:#0000cc; }
  56                a:hover { color:#880000; }
  57                a:visited { color:#880000; }
  58                a:active { color:#880000; }
  59                div.page_header { margin:15px 25px 0px; height:25px; padding:8px; font-size:18px; clear:both; font-weight:bold; background-color: #d9d8d1; }
  60                div.page_header a:visited { color:#0000cc; }
  61                div.page_nav { margin:0px 25px; padding:8px; clear:both; border: solid #d9d8d1; border-width:0px 1px; }
  62                div.page_nav a:visited { color:#0000cc; }
  63                div.page_footer { margin:0px 25px 15px; height:17px; padding:4px; padding-left:8px; clear:both; background-color: #d9d8d1; }
  64                div.page_footer_text { float:left; color:#888888; font-size:10px;}
  65                div.page_body { margin:0px 25px; padding:8px; clear:both; border: solid #d9d8d1; border-width:0px 1px; }
  66                a.log_title { display:block; margin:0px 25px; padding:8px; clear:both; font-weight:bold; background-color: #d9d8d1; text-decoration:none; color:#000000; }
  67                a.log_title:hover { background-color: #c9c8c1; }
  68                a.xml_logo { float:right; border:1px solid;
  69                        border-color:#fcc7a5 #7d3302 #3e1a01 #ff954e; width:35px; color:#ffffff; background-color:#ff6600;
  70                        font-weight:bold; font-family:sans-serif; text-align:center; font-size:11px; display:block; text-decoration:none;
  71                }
  72                a.xml_logo:hover { background-color:#ee5500; }
  73                div.log_head { margin:0px 25px; min-height: 30px; padding:8px; clear:both;
  74                        border: solid #d9d8d1; border-width:0px 1px; font-family:monospace; background-color: #edece6;
  75                }
  76                div.log_body { margin:0px 25px; padding:8px; padding-left:150px; clear:both; border: solid #d9d8d1; border-width:0px 1px; }
  77                span.log_age { position:relative; float:left; width:142px; }
  78                div.log_functions { font-size:10px; font-family:sans-serif; position:relative; float:left; width:142px; }
  79                div.signed_off { color: #a9a8a1; }
  80        </style>
  81</head>
  82<body>
  83EOF
  84        print "<div class=\"page_header\">\n" .
  85              "<a href=\"http://kernel.org/pub/software/scm/git/\">" .
  86              "<img src=\"$my_uri?a=git-logo.png\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/></a>";
  87        if ($defaultprojects ne "") {
  88                print $cgi->a({-href => "$my_uri"}, "projects") . " / ";
  89        }
  90        if ($project ne "") {
  91                print $cgi->a({-href => "$my_uri?p=$project;a=log"}, $project);
  92        }
  93        if ($action ne "") {
  94                print " / $action";
  95        }
  96        print "</div>\n";
  97}
  98
  99sub git_footer_html {
 100        print "<div class=\"page_footer\">";
 101        print "<div class=\"page_footer_text\">version $version</div>";
 102        if ($project ne '') {
 103                print $cgi->a({-href => "$my_uri?p=$project;a=rss", -class => "xml_logo"}, "XML") . "\n";
 104        }
 105        print "</div>";
 106        print "</body>\n</html>";
 107}
 108
 109sub git_head {
 110        my $path = shift;
 111        open my $fd, "$projectroot/$path/.git/HEAD";
 112        my $head = <$fd>;
 113        close $fd;
 114        chomp $head;
 115        return $head;
 116}
 117
 118sub git_commit {
 119        my $commit = shift;
 120        my %co;
 121        my @parents;
 122
 123        open my $fd, "-|", "$gitbin/cat-file commit $commit";
 124        while (my $line = <$fd>) {
 125                chomp($line);
 126                last if $line eq "";
 127                if ($line =~ m/^tree (.*)$/) {
 128                        $co{'tree'} = $1;
 129                } elsif ($line =~ m/^parent (.*)$/) {
 130                        push @parents, $1;
 131                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 132                        $co{'author'} = $1;
 133                        $co{'author_epoch'} = $2;
 134                        $co{'author_tz'} = $3;
 135                        $co{'author_name'} = $co{'author'};
 136                        $co{'author_name'} =~ s/ <.*//;
 137                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 138                        $co{'committer'} = $1;
 139                        $co{'committer_epoch'} = $2;
 140                        $co{'committer_tz'} = $3;
 141                        $co{'committer_name'} = $co{'committer'};
 142                        $co{'committer_name'} =~ s/ <.*//;
 143                }
 144        }
 145        $co{'parents'} = \@parents;
 146        $co{'parent'} = $parents[0];
 147        my (@comment) = map { chomp; $_ } <$fd>;
 148        $co{'comment'} = \@comment;
 149        $co{'title'} = $comment[0];
 150        close $fd;
 151        return %co;
 152}
 153
 154sub git_diff_html {
 155        my $from_name = shift || "/dev/null";
 156        my $to_name = shift || "/dev/null";
 157        my $from = shift;
 158        my $to = shift;
 159
 160        my $from_tmp = "/dev/null";
 161        my $to_tmp = "/dev/null";
 162        my $from_label = "/dev/null";
 163        my $to_label = "/dev/null";
 164        my $pid = $$;
 165
 166        # create tmp from-file
 167        if ($from ne "") {
 168                $from_tmp = "$gittmp/gitweb_" . $$ . "_from";
 169                open my $fd2, "> $from_tmp";
 170                open my $fd, "-|", "$gitbin/cat-file blob $from";
 171                my @file = <$fd>;
 172                print $fd2 @file;
 173                close $fd2;
 174                close $fd;
 175                $from_label = "a/$from_name";
 176        }
 177
 178        # create tmp to-file
 179        if ($to ne "") {
 180                $to_tmp = "$gittmp/gitweb_" . $$ . "_to";
 181                open my $fd2, "> $to_tmp";
 182                open my $fd, "-|", "$gitbin/cat-file blob $to";
 183                my @file = <$fd>;
 184                print $fd2 @file;
 185                close $fd2;
 186                close $fd;
 187                $to_label = "b/$to_name";
 188        }
 189
 190        open my $fd, "-|", "/usr/bin/diff -u -p -L $from_label -L $to_label $from_tmp $to_tmp";
 191        print "<span style=\"color: #000099;\">===== ";
 192        if ($from ne "") {
 193                print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from"}, $from);
 194        } else {
 195                print $from_name;
 196        }
 197        print " vs ";
 198        if ($to ne "") {
 199                print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to"}, $to);
 200        } else {
 201                print $to_name;
 202        }
 203        print " =====</span>\n";
 204        while (my $line = <$fd>) {
 205                my $char = substr($line,0,1);
 206                print '<span style="color: #008800;">' if $char eq '+';
 207                print '<span style="color: #CC0000;">' if $char eq '-';
 208                print '<span style="color: #990099;">' if $char eq '@';
 209                print escapeHTML($line);
 210                print '</span>' if $char eq '+' or $char eq '-' or $char eq '@';
 211        }
 212        close $fd;
 213
 214        if ($from ne "") {
 215                unlink("$from_tmp");
 216        }
 217        if ($to ne "") {
 218                unlink("$to_tmp");
 219        }
 220}
 221
 222sub mode_str {
 223        my $perms = oct shift;
 224        my $modestr;
 225        if ($perms & 040000) {
 226                $modestr .= 'drwxrwxr-x';
 227        } else {
 228                # git cares only about the executable bit
 229                if ($perms & 0100) {
 230                        $modestr .= '-rwxrwxr-x';
 231                } else {
 232                        $modestr .= '-rw-rw-r--';
 233                };
 234        }
 235        return $modestr;
 236}
 237
 238sub date_str {
 239        my $epoch = shift;
 240        my $tz = shift || "-0000";
 241
 242        my %date;
 243        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 244        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 245        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 246        $date{'hour'} = $hour;
 247        $date{'minute'} = $min;
 248        $date{'mday'} = $mday;
 249        $date{'day'} = $days[$wday];
 250        $date{'month'} = $months[$mon];
 251        $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 252        $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 253
 254        $tz =~ m/((-|\+)[0-9][0-9])([0-9][0-9])/;
 255        my $local = $epoch + (($1 + ($2/60)) * 3600);
 256        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 257        $date{'hour_local'} = $hour;
 258        $date{'minute_local'} = $min;
 259        $date{'tz_local'} = $tz;
 260        return %date;
 261}
 262
 263if ($action eq "git-logo.png") {
 264        print $cgi->header(-type => 'image/png', -expires => '+1d');
 265        print   "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104\122".
 266                "\000\000\000\110\000\000\000\033\004\003\000\000\000\055\331\324".
 267                "\055\000\000\000\030\120\114\124\105\377\377\377\140\140\135\260".
 268                "\257\252\000\200\000\316\315\307\300\000\000\350\350\346\367\367".
 269                "\366\225\014\247\107\000\000\000\163\111\104\101\124\050\317\143".
 270                "\110\147\040\004\112\134\030\012\010\052\142\123\141\040\002\010".
 271                "\015\151\105\254\241\241\001\060\014\223\140\066\046\122\221\261".
 272                "\001\021\326\341\125\144\154\154\314\154\154\014\242\014\160\052".
 273                "\142\006\052\301\142\035\263\001\002\123\244\010\350\000\003\030".
 274                "\046\126\021\324\341\040\227\033\340\264\016\065\044\161\051\202".
 275                "\231\060\270\223\012\021\271\105\210\301\215\240\242\104\041\006".
 276                "\047\101\202\100\205\301\105\211\040\160\001\000\244\075\041\305".
 277                "\022\034\232\376\000\000\000\000\111\105\116\104\256\102\140\202";
 278        exit;
 279}
 280
 281# show list of default projects
 282if ($project eq "") {
 283        opendir(my $fd, "$projectroot/$defaultprojects");
 284        my (@path) = sort grep(!/^\./, readdir($fd));
 285        closedir($fd);
 286        git_header_html();
 287        print "<div class=\"page_body\">\n";
 288        print "<br/><br/>\n";
 289        foreach my $line (@path) {
 290                if (-e "$projectroot/$defaultprojects/$line/.git/HEAD") {
 291                        print $cgi->a({-href => "$my_uri?p=$defaultprojects/$line;a=log"}, "$defaultprojects/$line") . "<br/>\n";
 292                }
 293        }
 294        print "<br/></div>";
 295        git_footer_html();
 296        exit;
 297}
 298
 299if ($action eq "") {
 300        $action = "log";
 301}
 302
 303if ($action eq "blob") {
 304        git_header_html();
 305        print "<div class=\"page_body\"><pre><br/><br/>\n";
 306        open my $fd, "-|", "$gitbin/cat-file blob $hash";
 307        my $nr;
 308        while (my $line = <$fd>) {
 309                $nr++;
 310                printf "<span style =\"color: #999999;\">%4i\t</span>%s", $nr, escapeHTML($line);;
 311        }
 312        close $fd;
 313        print "<br/><br/></pre>\n";
 314        print "</div>";
 315        git_footer_html();
 316} elsif ($action eq "tree") {
 317        if ($hash eq "") {
 318                $hash = git_head($project);
 319        }
 320        open my $fd, "-|", "$gitbin/ls-tree $hash";
 321        my (@entries) = map { chomp; $_ } <$fd>;
 322        close $fd;
 323        git_header_html();
 324        print "<div class=\"page_body\">\n";
 325        print "<br/><pre>\n";
 326        foreach my $line (@entries) {
 327                #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
 328                $line =~ m/^([0-9]+)\t(.*)\t(.*)\t(.*)$/;
 329                my $t_mode = $1;
 330                my $t_type = $2;
 331                my $t_hash = $3;
 332                my $t_name = $4;
 333                if ($t_type eq "blob") {
 334                        print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$t_hash"}, $t_name) . "\n";
 335                } elsif ($t_type eq "tree") {
 336                        print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$t_hash"}, $t_name) . "\n";
 337                }
 338        }
 339        print "</pre>\n";
 340        print "<br/></div>";
 341        git_footer_html();
 342} elsif ($action eq "log" || $action eq "rss") {
 343        open my $fd, "-|", "$gitbin/rev-list " . git_head($project);
 344        my (@revtree) = map { chomp; $_ } <$fd>;
 345        close $fd;
 346
 347        if ($action eq "log") {
 348                git_header_html();
 349                print "<div class=\"page_nav\">\n";
 350                print "view  ";
 351                print $cgi->a({-href => "$my_uri?p=$project;a=log"}, "last day") . " | \n" .
 352                      $cgi->a({-href => "$my_uri?p=$project;a=log;t=7"}, "week") . " | \n" .
 353                      $cgi->a({-href => "$my_uri?p=$project;a=log;t=31"}, "month") . " | \n" .
 354                      $cgi->a({-href => "$my_uri?p=$project;a=log;t=365"}, "year") . " | \n" .
 355                      $cgi->a({-href => "$my_uri?p=$project;a=log;t=0"}, "all") . "<br/>\n";
 356                print "<br/><br/>\n" .
 357                      "</div>\n";
 358        } elsif ($action eq "rss") {
 359                print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
 360                print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
 361                      "<rss version=\"0.91\">\n";
 362                print "<channel>\n";
 363                print "<title>$project</title>\n".
 364                      "<link> " . $my_url . "/$project/log</link>\n".
 365                      "<description>$project log</description>\n".
 366                      "<language>en</language>\n";
 367        }
 368
 369        for (my $i = 0; $i <= $#revtree; $i++) {
 370                my $commit = $revtree[$i];
 371                my %co = git_commit($commit);
 372                my %ad = date_str($co{'author_epoch'});
 373                my $age = time - $co{'committer_epoch'};
 374                my $age_string;
 375                if ($age > 60*60*24*365*2) {
 376                        $age_string = int $age/60/60/24/365;
 377                        $age_string .= " years ago";
 378                } elsif ($age > 60*60*24*365/12*2) {
 379                        $age_string = int $age/60/60/24/365/12;
 380                        $age_string .= " months ago";
 381                } elsif ($age > 60*60*24*7*2) {
 382                        $age_string = int $age/60/60/24/7;
 383                        $age_string .= " weeks ago";
 384                } elsif ($age > 60*60*24*2) {
 385                        $age_string = int $age/60/60/24;
 386                        $age_string .= " days ago";
 387                } elsif ($age > 60*60*2) {
 388                        $age_string = int $age/60/60;
 389                        $age_string .= " hours ago";
 390                } elsif ($age > 60*2) {
 391                        $age_string = int $age/60;
 392                        $age_string .= " minutes ago";
 393                }
 394                if ($action eq "log") {
 395                if ($time_back > 0 && $age > $time_back*60*60*24) {
 396                                if ($i == 0) {
 397                                        print "<div class=\"page_body\"> Last change $age_string.<br/><br/></div>\n";
 398                                }
 399                                last;
 400                        }
 401                        print "<div><a href=\"$my_uri?p=$project;a=commit;h=$commit\" class=\"log_title\">\n" .
 402                              "<span class=\"log_age\">" . $age_string . "</span>\n" . escapeHTML($co{'title'}) . "</a>\n" .
 403                              "</div>\n";
 404                        print "<div class=\"log_head\">\n" .
 405                              "<div class=\"log_functions\">\n" .
 406                              $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "view commit") . "<br/>\n" .
 407                              $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "view diff") . "<br/>\n" .
 408                              "</div>\n" .
 409                              escapeHTML($co{'author_name'}) .  " [" . $ad{'rfc2822'} . "]<br/>\n" .
 410                              "</div>\n" .
 411                              "<div class=\"log_body\">\n";
 412                        my $comment = $co{'comment'};
 413                        foreach my $line (@$comment) {
 414                                if ($line =~ m/^(signed-off|acked)-by:/i) {
 415                                        print '<div class="signed_off">' . escapeHTML($line) . "<br/></div>\n";
 416                                } else {
 417                                        print escapeHTML($line) . "<br/>\n";
 418                                }
 419                        }
 420                        print "<br/><br/>\n" .
 421                              "</div>\n";
 422                } elsif ($action eq "rss") {
 423                        last if ($i >= 20);
 424                        print "<item>\n" .
 425                              "\t<title>" . sprintf("%d %s %02d:%02d", $ad{'mday'}, $ad{'month'}, $ad{'hour'}, $ad{'min'}) . " - " . escapeHTML($co{'title'}) . "</title>\n" .
 426                              "\t<link> " . $my_url . "?p=$project;a==commit;h=$commit</link>\n" .
 427                              "\t<description>";
 428                        my $comment = $co{'comment'};
 429                        foreach my $line (@$comment) {
 430                                print escapeHTML($line) . "\n";
 431                        }
 432                        print "\t</description>\n" .
 433                              "</item>\n";
 434                }
 435        }
 436        if ($action eq "log") {
 437                git_footer_html();
 438        } elsif ($action eq "rss") {
 439                print "</channel></rss>";
 440        }
 441} elsif ($action eq "commit") {
 442        my %co = git_commit($hash);
 443        my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
 444        my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
 445        open my $fd, "-|", "$gitbin/diff-tree -r " . $co{'parent'} . " $hash";
 446        my (@difftree) = map { chomp; $_ } <$fd>;
 447        close $fd;
 448
 449        git_header_html();
 450        print "<div class=\"page_nav\"> view\n" .
 451              $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
 452              $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diff") . "\n" .
 453              "<br/><br/></div>\n";
 454        print "<a class=\"log_title\" href=\"$my_uri?p=$project;a=commitdiff;h=$hash\">$co{'title'}</a>\n";
 455        print "<div class=\"log_head\">\n";
 456        print "author &nbsp; &nbsp; &nbsp;" . escapeHTML($co{'author'}) . "<br/>\n";
 457        print "author-time " . $ad{'rfc2822'};
 458        if ($ad{'hour_local'} < 6) { print "<span style=\"color: #cc0000;\">"; }
 459        printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
 460        if ($ad{'hour_local'} < 6 ) { print "</span>"; }
 461        print "<br/>\n";
 462        print "committer &nbsp; " . escapeHTML($co{'committer'}) . "<br/>\n";
 463        print "commit-time " . $ad{'rfc2822'};
 464        printf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'});
 465        print "<br/>\n";
 466        print "commit &nbsp &nbsp; &nbsp;$hash<br/>\n";
 467        print "tree &nbsp; &nbsp; &nbsp; &nbsp" . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$co{'tree'}"}, $co{'tree'}) . "<br/>\n";
 468        my $parents  = $co{'parents'};
 469        foreach my $par (@$parents) {
 470                print "parent &nbsp; &nbsp &nbsp" . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$par"}, $par) . "<br/>\n";
 471        }
 472        print "</div>\n";
 473        print "<div class=\"page_body\">\n";
 474        my $comment = $co{'comment'};
 475        foreach my $line (@$comment) {
 476                if ($line =~ m/(signed-off|acked)-by:/i) {
 477                        print '<div class="signed_off">' . escapeHTML($line) . "<br/></div>\n";
 478                } else {
 479                        print escapeHTML($line) . "<br/>\n";
 480                }
 481        }
 482        print "<br/><br/>\n";
 483        print "<pre>\n";
 484        foreach my $line (@difftree) {
 485                # '*100644->100644      blob    9f91a116d91926df3ba936a80f020a6ab1084d2b->bb90a0c3a91eb52020d0db0e8b4f94d30e02d596      net/ipv4/route.c'
 486                # '+100644      blob    4a83ab6cd565d21ab0385bac6643826b83c2fcd4        arch/arm/lib/bitops.h'
 487                $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 488                my $op = $1;
 489                my $mode = $2;
 490                my $type = $3;
 491                my $id = $4;
 492                my $file = $5;
 493                $mode =~ m/^([0-7]{6})/;
 494                my $modestr = mode_str($1);
 495                if ($type eq "blob") {
 496                        if ($op eq "+") {
 497                                print "$modestr " . $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$id"}, $file) . " (new)\n";
 498                        } elsif ($op eq "-") {
 499                                print "$modestr " . $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;hp=$id"}, $file) . " (removed)\n";
 500                        } elsif ($op eq "*") {
 501                                $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
 502                                my $from = $1;
 503                                my $to = $2;
 504                                print "$modestr " . $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to;hp=$from"}, $file) . "\n";
 505                        }
 506                }
 507        }
 508        print "</pre>\n" .
 509              "<br/></div>";
 510        git_footer_html();
 511} elsif ($action eq "blobdiff") {
 512        git_header_html();
 513        print "<div class=\"page_body\"><br/><br/>\n" .
 514              "<pre>\n";
 515        git_diff_html($hash_parent, $hash, $hash_parent, $hash);
 516        print "</pre>\n" .
 517              "<br/></div>";
 518        git_footer_html();
 519} elsif ($action eq "commitdiff") {
 520        my %co = git_commit($hash);
 521        open my $fd, "-|", "$gitbin/diff-tree -r " . $co{'parent'} . " $hash";
 522        my (@difftree) = map { chomp; $_ } <$fd>;
 523        close $fd;
 524
 525        git_header_html();
 526        print "<div class=\"page_nav\"> view\n" .
 527              $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
 528              $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diff") . "\n" .
 529              "<br/><br/></div>\n";
 530        print $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "log_title"}, $co{'title'}) ."\n";
 531        print "<div class=\"page_body\">\n" .
 532              "<pre>\n";
 533        foreach my $line (@difftree) {
 534                # '*100644->100644      blob    8e5f9bbdf4de94a1bc4b4da8cb06677ce0a57716->8da3a306d0c0c070d87048d14a033df02f40a154      Makefile'
 535                $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 536                my $op = $1;
 537                my $mode = $2;
 538                my $type = $3;
 539                my $id = $4;
 540                my $file = $5;
 541                if ($type eq "blob") {
 542                        if ($op eq "+") {
 543                                git_diff_html("", $file, "", $id);
 544                        } elsif ($op eq "-") {
 545                                git_diff_html($file, "", $id, "");
 546                        } elsif ($op eq "*") {
 547                                $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
 548                                git_diff_html($file, $file, $1, $2);
 549                        }
 550                }
 551        }
 552        print "<br/></pre>\n";
 553        print "</div>";
 554        git_footer_html();
 555} else {
 556        git_header_html();
 557        print "<div class=\"page_body\">\n" .
 558              "<br/><br/>\n";
 559        print "unknown action\n";
 560        print "<br/></div>\n";
 561        git_footer_html();
 562}