gitweb.cgi

   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
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML);
  13 use CGI::Carp qw(fatalsToBrowser);
  14
  15 my $cgi = new CGI;
  16
  17 my $version =           "085";
  18 my $projectroot =       "/pub/scm";
  19 my $home_link =         "/git";
  20 my $gitbin =            "/usr/bin";
  21 my $gittmp =            "/tmp/gitweb";
  22 my $logo_link =         "/pub/software/scm/cogito";
  23 my $my_url =            $cgi->url();
  24 my $my_uri =            $cgi->url(-absolute => 1);
  25 my $rss_link = "";
  26
  27 my $project = $cgi->param('p');
  28 if (defined($project)) {
  29         if ($project =~ /(^|\/)(|\.|\.\.)($|\/)/) {
  30                 $project = "";
  31                 die_error("", "Invalid project parameter.");
  32         }
  33         if (!(-d "$projectroot/$project")) {
  34                 $project = "";
  35                 die_error("", "No such project.");
  36         }
  37         $rss_link = "<link rel=\"alternate\" title=\"$project log\" href=\"$my_uri?p=$project;a=rss\" type=\"application/rss+xml\"/>";
  38 }
  39
  40 my $file_name = $cgi->param('f');
  41 if (defined($file_name) && $file_name =~ /(^|\/)(|\.|\.\.)($|\/)/) {
  42         $file_name = "";
  43         die_error("", "Invalid file parameter.");
  44 }
  45
  46 my $action = $cgi->param('a');
  47 if (defined($action) && $action =~ m/[^0-9a-zA-Z\.\-]+$/) {
  48         $action = "";
  49         die_error("", "Invalid action parameter.");
  50 }
  51
  52 my $hash = $cgi->param('h');
  53 if (defined($hash) && !($hash =~ m/^[0-9a-fA-F]{40}$/)) {
  54         $hash = "";
  55         die_error("", "Invalid hash parameter.");
  56 }
  57
  58 my $hash_parent = $cgi->param('hp');
  59 if (defined($hash_parent) && !($hash_parent =~ m/^[0-9a-fA-F]{40}$/)) {
  60         $hash_parent = "";
  61         die_error("", "Invalid parent hash parameter.");
  62 }
  63
  64 my $time_back = $cgi->param('t');
  65 if (defined($time_back) && !($time_back =~ m/^[0-9]+$/)) {
  66         $time_back = "";
  67         die_error("", "Invalid time parameter.");
  68 }
  69
  70 $ENV{'SHA1_FILE_DIRECTORY'} = "$projectroot/$project/objects";
  71 mkdir($gittmp, 0700);
  72
  73 sub git_header_html {
  74         my $status = shift || "200 OK";
  75
  76         print $cgi->header(-type=>'text/html',  -charset => 'utf-8', -status=> $status);
  77         print <<EOF;
  78 <?xml version="1.0" encoding="utf-8"?>
  79 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  80 <!-- git web interface v$version, (C) 2005, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke <ch\@gierke.de> -->
  81 <html>
  82 <head>
  83 <title>git - $project</title>
  84 $rss_link
  85 <style type="text/css">
  86 body { font-family: sans-serif; font-size: 12px; margin:0px; }
  87 a { color:#0000cc; }
  88 a:hover { color:#880000; }
  89 a:visited { color:#880000; }
  90 a:active { color:#880000; }
  91 div.page_header {
  92         margin:15px 25px 0px; height:25px; padding:8px;
  93         font-size:18px; font-weight:bold; background-color:#d9d8d1;
  94 }
  95 div.page_header a:visited { color:#0000cc; }
  96 div.page_header a:hover { color:#880000; }
  97 div.page_nav { margin:0px 25px; padding:8px; border:solid #d9d8d1; border-width:0px 1px; }
  98 div.page_nav a:visited { color:#0000cc; }
  99 div.page_footer { margin:0px 25px 15px; height:17px; padding:4px; padding-left:8px; background-color: #d9d8d1; }
 100 div.page_footer_text { float:left; color:#555555; font-style:italic; }
 101 div.page_body { margin:0px 25px; padding:8px; border:solid #d9d8d1; border-width:0px 1px; }
 102 div.title, a.title {
 103         display:block; margin:0px 25px; padding:6px 8px;
 104         font-weight:bold; background-color:#edece6; text-decoration:none; color:#000000;
 105 }
 106 a.title:hover { background-color: #d9d8d1; }
 107 div.title_text { margin:0px 25px; padding:6px 8px; border: solid #d9d8d1; border-width:0px 1px 1px; }
 108 div.log_body { margin:0px 25px; padding:8px; padding-left:150px; border:solid #d9d8d1; border-width:0px 1px; }
 109 span.log_age { position:relative; float:left; width:142px; font-style:italic; }
 110 div.log_link { font-size:10px; font-family:sans-serif; font-style:normal; position:relative; float:left; width:142px; }
 111 div.list {
 112         display:block; margin:0px 25px; padding:4px 6px 2px; border:solid #d9d8d1; border-width:1px 1px 0px;
 113         font-weight:bold;
 114 }
 115 div.list_head {
 116         display:block; margin:0px 25px; padding:4px 6px 4px; border:solid #d9d8d1; border-width:1px 1px 0px;
 117         font-style:italic;
 118 }
 119 div.list a { text-decoration:none; color:#000000; }
 120 div.list a:hover { color:#880000; }
 121 div.link {
 122         margin:0px 25px; padding:0px 6px 8px; border:solid #d9d8d1; border-width:0px 1px;
 123         font-family:sans-serif; font-size:10px;
 124 }
 125 td.key { padding-right:10px;  }
 126 a.xml_logo { float:right; border:1px solid;
 127         line-height:15px;
 128         border-color:#fcc7a5 #7d3302 #3e1a01 #ff954e; width:35px;
 129         color:#ffffff; background-color:#ff6600;
 130         font-weight:bold; font-family:sans-serif; text-align:center;
 131         font-size:10px; display:block; text-decoration:none;
 132 }
 133 a.xml_logo:hover { background-color:#ee5500; }
 134 </style>
 135 </head>
 136 <body>
 137 EOF
 138         print "<div class=\"page_header\">\n" .
 139               "<a href=\"$logo_link\">" .
 140               "<img src=\"$my_uri?a=git-logo.png\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/></a>";
 141         print $cgi->a({-href => "$my_uri"}, "projects") . " / ";
 142         if ($project ne "") {
 143                 print $cgi->a({-href => "$my_uri?p=$project;a=log"}, escapeHTML($project));
 144         }
 145         if ($action ne "") {
 146                 print " / $action";
 147         }
 148         print "</div>\n";
 149 }
 150
 151 sub git_footer_html {
 152         print "<div class=\"page_footer\">\n";
 153         if ($project ne "") {
 154                 if (-e "$projectroot/$project/description") {
 155                         open(my $fd, "$projectroot/$project/description");
 156                         my $descr = <$fd>;
 157                         print "<div class=\"page_footer_text\">" . escapeHTML($descr) . "</div>\n";
 158                         close $fd;
 159                 }
 160                 print $cgi->a({-href => "$my_uri?p=$project;a=rss", -class => "xml_logo"}, "XML") . "\n";
 161         }
 162         print "</div>\n" .
 163               "</body>\n" .
 164               "</html>";
 165 }
 166
 167 sub die_error {
 168         my $status = shift || "403 Forbidden";
 169         my $error = shift || "Malformed query, file missing or permission denied";
 170
 171         git_header_html($status);
 172         print "<div class=\"page_body\">\n" .
 173               "<br/><br/>\n";
 174         print "$status - $error\n";
 175         print "<br/></div>\n";
 176         git_footer_html();
 177         exit 0;
 178 }
 179
 180 sub git_head {
 181         my $path = shift;
 182         open(my $fd, "$projectroot/$path/HEAD") || die_error("", "Invalid project directory.");
 183         my $head = <$fd>;
 184         close $fd;
 185         chomp $head;
 186         return $head;
 187 }
 188
 189 sub git_commit {
 190         my $commit = shift;
 191         my %co;
 192         my @parents;
 193
 194         open my $fd, "-|", "$gitbin/cat-file commit $commit";
 195         while (my $line = <$fd>) {
 196                 chomp($line);
 197                 last if $line eq "";
 198                 if ($line =~ m/^tree (.*)$/) {
 199                         $co{'tree'} = $1;
 200                 } elsif ($line =~ m/^parent (.*)$/) {
 201                         push @parents, $1;
 202                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 203                         $co{'author'} = $1;
 204                         $co{'author_epoch'} = $2;
 205                         $co{'author_tz'} = $3;
 206                         $co{'author_name'} = $co{'author'};
 207                         $co{'author_name'} =~ s/ <.*//;
 208                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 209                         $co{'committer'} = $1;
 210                         $co{'committer_epoch'} = $2;
 211                         $co{'committer_tz'} = $3;
 212                         $co{'committer_name'} = $co{'committer'};
 213                         $co{'committer_name'} =~ s/ <.*//;
 214                 }
 215         }
 216         if (!defined($co{'tree'})) {
 217                 return;
 218         }
 219         $co{'parents'} = \@parents;
 220         $co{'parent'} = $parents[0];
 221         my (@comment) = map { chomp; $_ } <$fd>;
 222         $co{'comment'} = \@comment;
 223         $co{'title'} = $comment[0];
 224         close $fd;
 225
 226         my $age = time - $co{'committer_epoch'};
 227         $co{'age'} = $age;
 228         if ($age > 60*60*24*365*2) {
 229                 $co{'age_string'} = (int $age/60/60/24/365);
 230                 $co{'age_string'} .= " years ago";
 231         } elsif ($age > 60*60*24*365/12*2) {
 232                 $co{'age_string'} = int $age/60/60/24/365/12;
 233                 $co{'age_string'} .= " months ago";
 234         } elsif ($age > 60*60*24*7*2) {
 235                 $co{'age_string'} = int $age/60/60/24/7;
 236                 $co{'age_string'} .= " weeks ago";
 237         } elsif ($age > 60*60*24*2) {
 238                 $co{'age_string'} = int $age/60/60/24;
 239                 $co{'age_string'} .= " days ago";
 240         } elsif ($age > 60*60*2) {
 241                 $co{'age_string'} = int $age/60/60;
 242                 $co{'age_string'} .= " hours ago";
 243         } elsif ($age > 60*2) {
 244                 $co{'age_string'} = int $age/60;
 245                 $co{'age_string'} .= " minutes ago";
 246         }
 247         return %co;
 248 }
 249
 250 sub git_diff_html {
 251         my $from_name = shift || "/dev/null";
 252         my $to_name = shift || "/dev/null";
 253         my $from = shift;
 254         my $to = shift;
 255
 256         my $from_tmp = "/dev/null";
 257         my $to_tmp = "/dev/null";
 258         my $from_label = "/dev/null";
 259         my $to_label = "/dev/null";
 260         my $pid = $$;
 261
 262         # create tmp from-file
 263         if ($from ne "") {
 264                 $from_tmp = "$gittmp/gitweb_" . $$ . "_from";
 265                 open(my $fd2, "> $from_tmp");
 266                 open my $fd, "-|", "$gitbin/cat-file blob $from";
 267                 my @file = <$fd>;
 268                 print $fd2 @file;
 269                 close $fd2;
 270                 close $fd;
 271                 $from_label = "a/$from_name";
 272         }
 273
 274         # create tmp to-file
 275         if ($to ne "") {
 276                 $to_tmp = "$gittmp/gitweb_" . $$ . "_to";
 277                 open my $fd2, "> $to_tmp";
 278                 open my $fd, "-|", "$gitbin/cat-file blob $to";
 279                 my @file = <$fd>;
 280                 print $fd2 @file;
 281                 close $fd2;
 282                 close $fd;
 283                 $to_label = "b/$to_name";
 284         }
 285
 286         open my $fd, "-|", "/usr/bin/diff -u -p -L $from_label -L $to_label $from_tmp $to_tmp";
 287         print "<span style=\"color: #000099;\">===== ";
 288         if ($from ne "") {
 289                 print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from"}, $from);
 290         } else {
 291                 print $from_name;
 292         }
 293         print " vs ";
 294         if ($to ne "") {
 295                 print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to"}, $to);
 296         } else {
 297                 print $to_name;
 298         }
 299         print " =====</span>\n";
 300         while (my $line = <$fd>) {
 301                 my $char = substr($line,0,1);
 302                 print '<span style="color: #008800;">' if $char eq '+';
 303                 print '<span style="color: #CC0000;">' if $char eq '-';
 304                 print '<span style="color: #990099;">' if $char eq '@';
 305                 print escapeHTML($line);
 306                 print '</span>' if $char eq '+' or $char eq '-' or $char eq '@';
 307         }
 308         close $fd;
 309
 310         if ($from ne "") {
 311                 unlink("$from_tmp");
 312         }
 313         if ($to ne "") {
 314                 unlink("$to_tmp");
 315         }
 316 }
 317
 318 sub mode_str {
 319         my $perms = oct shift;
 320         my $modestr;
 321         if ($perms & 040000) {
 322                 $modestr .= 'drwxr-xr-x';
 323         } else {
 324                 # git cares only about the executable bit
 325                 if ($perms & 0100) {
 326                         $modestr .= '-rwxr-xr-x';
 327                 } else {
 328                         $modestr .= '-rw-r--r--';
 329                 };
 330         }
 331         return $modestr;
 332 }
 333
 334 sub date_str {
 335         my $epoch = shift;
 336         my $tz = shift || "-0000";
 337
 338         my %date;
 339         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 340         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 341         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 342         $date{'hour'} = $hour;
 343         $date{'minute'} = $min;
 344         $date{'mday'} = $mday;
 345         $date{'day'} = $days[$wday];
 346         $date{'month'} = $months[$mon];
 347         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 348         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 349
 350         $tz =~ m/((-|\+)[0-9][0-9])([0-9][0-9])/;
 351         my $local = $epoch + (($1 + ($2/60)) * 3600);
 352         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 353         $date{'hour_local'} = $hour;
 354         $date{'minute_local'} = $min;
 355         $date{'tz_local'} = $tz;
 356         return %date;
 357 }
 358
 359 if ($action eq "git-logo.png") {
 360         print $cgi->header(-type => 'image/png', -expires => '+1d');
 361         print   "\211\120\116\107\015\012\032\012\000\000\000\015\111\110\104\122".
 362                 "\000\000\000\110\000\000\000\033\004\003\000\000\000\055\331\324".
 363                 "\055\000\000\000\030\120\114\124\105\377\377\377\140\140\135\260".
 364                 "\257\252\000\200\000\316\315\307\300\000\000\350\350\346\367\367".
 365                 "\366\225\014\247\107\000\000\000\163\111\104\101\124\050\317\143".
 366                 "\110\147\040\004\112\134\030\012\010\052\142\123\141\040\002\010".
 367                 "\015\151\105\254\241\241\001\060\014\223\140\066\046\122\221\261".
 368                 "\001\021\326\341\125\144\154\154\314\154\154\014\242\014\160\052".
 369                 "\142\006\052\301\142\035\263\001\002\123\244\010\350\000\003\030".
 370                 "\046\126\021\324\341\040\227\033\340\264\016\065\044\161\051\202".
 371                 "\231\060\270\223\012\021\271\105\210\301\215\240\242\104\041\006".
 372                 "\047\101\202\100\205\301\105\211\040\160\001\000\244\075\041\305".
 373                 "\022\034\232\376\000\000\000\000\111\105\116\104\256\102\140\202";
 374         exit;
 375 }
 376
 377 if (!defined($project)) {
 378         print $cgi->redirect($home_link);
 379         exit;
 380 }
 381
 382 if (!defined($action)) {
 383         $action = "log";
 384 }
 385
 386 if (!defined($time_back)) {
 387         $time_back = 1;
 388 }
 389
 390 if ($action eq "blob") {
 391         git_header_html();
 392         print "<div class=\"page_nav\">\n";
 393         print "<br/><br/></div>\n";
 394         print "<div class=\"title\">$hash</div>\n";
 395         print "<div class=\"page_body\"><pre>\n";
 396         open(my $fd, "-|", "$gitbin/cat-file blob $hash");
 397         my $nr;
 398         while (my $line = <$fd>) {
 399                 $nr++;
 400                 printf "<span style =\"color: #999999;\">%4i\t</span>%s", $nr, escapeHTML($line);;
 401         }
 402         close $fd;
 403         print "<br/></pre>\n";
 404         print "</div>";
 405         git_footer_html();
 406 } elsif ($action eq "tree") {
 407         if ($hash eq "") {
 408                 $hash = git_head($project);
 409         }
 410         open my $fd, "-|", "$gitbin/ls-tree $hash";
 411         my (@entries) = map { chomp; $_ } <$fd>;
 412         close $fd;
 413
 414         git_header_html();
 415         my %co = git_commit($hash);
 416         if (defined(%co)) {
 417                 print "<div class=\"page_nav\"> view\n" .
 418                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | " .
 419                       $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | " .
 420                       $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash"}, "tree") .
 421                       "<br/><br/>\n" .
 422                       "</div>\n";
 423                 print "<div>\n" .
 424                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 425                       "</div>\n";
 426         } else {
 427                 print "<div class=\"page_nav\">\n";
 428                 print "<br/><br/></div>\n";
 429                 print "<div class=\"title\">$hash</div>\n";
 430         }
 431         print "<div class=\"page_body\">\n";
 432         print "<br/><pre>\n";
 433         foreach my $line (@entries) {
 434                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
 435                 $line =~ m/^([0-9]+)\t(.*)\t(.*)\t(.*)$/;
 436                 my $t_mode = $1;
 437                 my $t_type = $2;
 438                 my $t_hash = $3;
 439                 my $t_name = $4;
 440                 if ($t_type eq "blob") {
 441                         print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$t_hash"}, $t_name) . "\n";
 442                 } elsif ($t_type eq "tree") {
 443                         print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$t_hash"}, $t_name) . "\n";
 444                 }
 445         }
 446         print "</pre>\n";
 447         print "<br/></div>";
 448         git_footer_html();
 449 } elsif ($action eq "log" || $action eq "rss") {
 450         open my $fd, "-|", "$gitbin/rev-list " . git_head($project);
 451         my (@revlist) = map { chomp; $_ } <$fd>;
 452         close $fd;
 453
 454         if ($action eq "log") {
 455                 git_header_html();
 456                 print "<div class=\"page_nav\">\n";
 457                 print "view  ";
 458                 print $cgi->a({-href => "$my_uri?p=$project;a=log"}, "last day") . " | " .
 459                       $cgi->a({-href => "$my_uri?p=$project;a=log;t=7"}, "week") . " | " .
 460                       $cgi->a({-href => "$my_uri?p=$project;a=log;t=31"}, "month") . " | " .
 461                       $cgi->a({-href => "$my_uri?p=$project;a=log;t=365"}, "year") . " | " .
 462                       $cgi->a({-href => "$my_uri?p=$project;a=log;t=0"}, "all") . "<br/>\n";
 463                 print "<br/><br/>\n" .
 464                       "</div>\n";
 465         } elsif ($action eq "rss") {
 466                 print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
 467                 print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
 468                       "<rss version=\"0.91\">\n";
 469                 print "<channel>\n";
 470                 print "<title>$project</title>\n".
 471                       "<link> " . $my_url . "/$project/log</link>\n".
 472                       "<description>$project log</description>\n".
 473                       "<language>en</language>\n";
 474         }
 475
 476         for (my $i = 0; $i <= $#revlist; $i++) {
 477                 my $commit = $revlist[$i];
 478                 my %co = git_commit($commit);
 479                 my %ad = date_str($co{'author_epoch'});
 480                 if ($action eq "log") {
 481                 if ($time_back > 0 && $co{'age'} > $time_back*60*60*24) {
 482                                 if ($i == 0) {
 483                                         print "<div class=\"page_body\"> Last change " . $co{'age_string'} . ".<br/><br/></div>\n";
 484                                 }
 485                                 last;
 486                         }
 487                         print "<div>\n" .
 488                               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "title"},
 489                               "<span class=\"log_age\">" . $co{'age_string'} . "</span>" . escapeHTML($co{'title'})) . "\n" .
 490                               "</div>\n";
 491                         print "<div class=\"title_text\">\n" .
 492                               "<div class=\"log_link\">\n" .
 493                               "view " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") . " | " .
 494                               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "diff") . "<br/>\n" .
 495                               "</div>\n" .
 496                               "<i>" . escapeHTML($co{'author_name'}) .  " [" . $ad{'rfc2822'} . "]</i><br/>\n" .
 497                               "</div>\n" .
 498                               "<div class=\"log_body\">\n";
 499                         my $comment = $co{'comment'};
 500                         foreach my $line (@$comment) {
 501                                 last if ($line =~ m/^(signed-off|acked)-by:/i);
 502                                 print escapeHTML($line) . "<br/>\n";
 503                         }
 504                         print "<br/>\n" .
 505                               "</div>\n";
 506                 } elsif ($action eq "rss") {
 507                         last if ($i >= 20);
 508                         print "<item>\n" .
 509                               "\t<title>" . sprintf("%d %s %02d:%02d", $ad{'mday'}, $ad{'month'}, $ad{'hour'}, $ad{'min'}) . " - " . escapeHTML($co{'title'}) . "</title>\n" .
 510                               "\t<link> " . $my_url . "?p=$project;a=commit;h=$commit</link>\n" .
 511                               "\t<description>";
 512                         my $comment = $co{'comment'};
 513                         foreach my $line (@$comment) {
 514                                 print escapeHTML($line) . "\n";
 515                         }
 516                         print "\t</description>\n" .
 517                               "</item>\n";
 518                 }
 519         }
 520         if ($action eq "log") {
 521                 git_footer_html();
 522         } elsif ($action eq "rss") {
 523                 print "</channel></rss>";
 524         }
 525 } elsif ($action eq "commit") {
 526         my %co = git_commit($hash);
 527         if (!defined(%co)) {
 528                 die_error("", "Unknown commit object.");
 529         }
 530         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
 531         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
 532
 533         my @difftree;
 534         if (defined($co{'parent'})) {
 535                 open my $fd, "-|", "$gitbin/diff-tree -r " . $co{'parent'} . " $hash";
 536                 @difftree = map { chomp; $_ } <$fd>;
 537                 close $fd;
 538         } else {
 539                 # fake git-diff-tree output for initial revision
 540                 open my $fd, "-|", "$gitbin/ls-tree -r $hash";
 541                 @difftree = map { chomp;  "+" . $_ } <$fd>;
 542                 close $fd;
 543         }
 544         git_header_html();
 545         print "<div class=\"page_nav\"> view\n" .
 546               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
 547               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | \n" .
 548               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash"}, "tree") . "\n" .
 549               "<br/><br/></div>\n";
 550         print "<div>\n" .
 551               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 552               "</div>\n";
 553         print "<div class=\"title_text\">\n" .
 554               "<table cellspacing=\"0\">";
 555         print "<tr><td class=\"key\">author</td><td>" . escapeHTML($co{'author'}) . "</td><tr><td></td><td>" .
 556               " " . $ad{'rfc2822'};
 557         if ($ad{'hour_local'} < 6) {
 558                 print "<span style=\"color: #cc0000;\">";
 559         }
 560         printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
 561         if ($ad{'hour_local'} < 6 ) {
 562                 print "</span>";
 563         }
 564         print "</i>\n" .
 565               "</td></tr>\n";
 566         print "<tr><td class=\"key\">committer</td><td>" . escapeHTML($co{'committer'}) . "</td><tr><td></td><td>" .
 567               " " . $cd{'rfc2822'} . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</i>\n" .
 568               "</td></tr>\n";
 569         print "<tr><td class=\"key\">commit</td><td style=\"font-family: monospace;\">$hash</td></tr>\n";
 570         print "<tr><td class=\"key\">tree</td><td style=\"font-family: monospace;\">" . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash"}, $co{'tree'}) . "</td></tr>\n";
 571         my $parents  = $co{'parents'};
 572         foreach my $par (@$parents) {
 573                 print "<tr><td class=\"key\">parent</td><td style=\"font-family: monospace;\">" . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$par"}, $par) . "</td></tr>\n";
 574         }
 575         print "</table></div>\n";
 576         print "<div class=\"page_body\">\n";
 577         my $comment = $co{'comment'};
 578         foreach my $line (@$comment) {
 579                 if ($line =~ m/(signed-off|acked)-by:/i) {
 580                         print "<span style=\"color: #888888\">" . escapeHTML($line) . "</span><br/>\n";
 581                 } else {
 582                         print escapeHTML($line) . "<br/>\n";
 583                 }
 584         }
 585         print "</div>\n";
 586         if ($#difftree > 10) {
 587                 print "<div class=\"list_head\">" . ($#difftree + 1) . " files changed:<br/></div>\n";
 588         }
 589         foreach my $line (@difftree) {
 590                 # '*100644->100644      blob    9f91a116d91926df3ba936a80f020a6ab1084d2b->bb90a0c3a91eb52020d0db0e8b4f94d30e02d596      net/ipv4/route.c'
 591                 # '+100644      blob    4a83ab6cd565d21ab0385bac6643826b83c2fcd4        arch/arm/lib/bitops.h'
 592                 # '*100664->100644      blob    b1a8e3dd5556b61dd771d32307c6ee5d7150fa43->b1a8e3dd5556b61dd771d32307c6ee5d7150fa43      show-files.c'
 593                 # '*100664->100644      blob    d08e895238bac36d8220586fdc28c27e1a7a76d3->d08e895238bac36d8220586fdc28c27e1a7a76d3      update-cache.c'
 594                 $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 595                 my $op = $1;
 596                 my $mode = $2;
 597                 my $type = $3;
 598                 my $id = $4;
 599                 my $file = $5;
 600                 my $mode_chng = "";
 601                 if ($type eq "blob") {
 602                         if ($op eq "+") {
 603                                 print "<div class=\"list\">\n" .
 604                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id"},
 605                                       escapeHTML($file) . " <span style=\"color: #008000;\">[new]</span>") . "\n" .
 606                                       "</div>";
 607                                 print "<div class=\"link\">\n" .
 608                                       "view " .
 609                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id"}, "file") . "<br/>\n" .
 610                                       "</div>\n";
 611                         } elsif ($op eq "-") {
 612                                 print "<div class=\"list\">\n" .
 613                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id"},
 614                                       escapeHTML($file) .  " <span style=\"color: #c00000;\">[removed]</span>") . "\n" .
 615                                       "</div>";
 616                                 print "<div class=\"link\">\n" .
 617                                       "view " .
 618                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id"}, "file") . " | " .
 619                                       $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") . "<br/>\n" .
 620                                       "</div>\n";
 621                         } elsif ($op eq "*") {
 622                                 $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
 623                                 my $from_id = $1;
 624                                 my $to_id = $2;
 625                                 $mode =~ m/^([0-7]{6})->([0-7]{6})$/;
 626                                 my $from_mode = $1;
 627                                 my $to_mode = $2;
 628                                 my $mode_chnge = "";
 629                                 if ($from_mode != $to_mode) {
 630                                         $mode_chnge = " <span style=\"color: #888888;\"> [chmod $mode]</span>\n";
 631                                 }
 632                                 print "<div class=\"list\">\n";
 633                                 if ($to_id ne $from_id) {
 634                                         print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id"},
 635                                               escapeHTML($file) . $mode_chnge) . "\n" .
 636                                               "</div>\n";
 637                                 } else {
 638                                         print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id"},
 639                                               escapeHTML($file) . $mode_chnge) . "\n" .
 640                                               "</div>\n";
 641                                 }
 642                                 print "<div class=\"link\">\n" .
 643                                       "view ";
 644                                 if ($to_id ne $from_id) {
 645                                         print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id"}, "diff") . " | ";
 646                                 }
 647                                 print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id"}, "file") . " | " .
 648                                       $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") . "<br/>\n" .
 649                                       "</div>\n";
 650                         }
 651                 }
 652         }
 653         git_footer_html();
 654 } elsif ($action eq "blobdiff") {
 655         git_header_html();
 656         print "<div class=\"page_nav\">\n";
 657         print "<br/><br/></div>\n";
 658         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
 659         print "<div class=\"page_body\">\n" .
 660               "<pre>\n";
 661         git_diff_html($hash_parent, $hash, $hash_parent, $hash);
 662         print "</pre>\n" .
 663               "<br/></div>";
 664         git_footer_html();
 665 } elsif ($action eq "commitdiff") {
 666         my %co = git_commit($hash);
 667         if (!defined(%co)) {
 668                 die_error("", "Unknown commit object.");
 669         }
 670         open my $fd, "-|", "$gitbin/diff-tree -r " . $co{'parent'} . " $hash";
 671         my (@difftree) = map { chomp; $_ } <$fd>;
 672         close $fd;
 673
 674         git_header_html();
 675         print "<div class=\"page_nav\"> view\n" .
 676               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
 677               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | \n" .
 678               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$hash"}, "tree") . "\n" .
 679               "<br/><br/></div>\n";
 680         print "<div>\n" .
 681               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 682               "</div>\n";
 683         print "<div class=\"page_body\">\n" .
 684               "<pre>\n";
 685         foreach my $line (@difftree) {
 686                 # '*100644->100644      blob    8e5f9bbdf4de94a1bc4b4da8cb06677ce0a57716->8da3a306d0c0c070d87048d14a033df02f40a154      Makefile'
 687                 $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 688                 my $op = $1;
 689                 my $mode = $2;
 690                 my $type = $3;
 691                 my $id = $4;
 692                 my $file = $5;
 693                 if ($type eq "blob") {
 694                         if ($op eq "+") {
 695                                 git_diff_html("", $file, "", $id);
 696                         } elsif ($op eq "-") {
 697                                 git_diff_html($file, "", $id, "");
 698                         } elsif ($op eq "*") {
 699                                 $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
 700                                 if ($1 ne $2) {
 701                                         git_diff_html($file, $file, $1, $2);
 702                                 }
 703                         }
 704                 }
 705         }
 706         print "<br/></pre>\n";
 707         print "</div>";
 708         git_footer_html();
 709 } elsif ($action eq "history") {
 710         if (!(defined($hash))) {
 711                 $hash = git_head($project);
 712         }
 713         open my $fd, "-|", "$gitbin/rev-list $hash";
 714         my (@revlist) = map { chomp; $_ } <$fd>;
 715         close $fd;
 716
 717         git_header_html();
 718         print "<div class=\"page_nav\">\n";
 719         print "<br/><br/></div>\n";
 720         print "<div>\n" .
 721               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($file_name)) . "\n" .
 722               "</div>\n";
 723         foreach my $rev (@revlist) {
 724                 my %co = git_commit($rev);
 725                 my $parents  = $co{'parents'};
 726                 my $found = 0;
 727                 foreach my $parent (@$parents) {
 728                         open $fd, "-|", "$gitbin/diff-tree -r $parent $rev $file_name";
 729                         my (@difftree) = map { chomp; $_ } <$fd>;
 730                         close $fd;
 731
 732                         foreach my $line (@difftree) {
 733                                 $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 734                                 my $file = $5;
 735                                 if ($file eq $file_name) {
 736                                         $found = 1;
 737                                         last;
 738                                 }
 739                         }
 740                 }
 741                 if ($found) {
 742                         print "<div class=\"list\">\n" .
 743                               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$rev"},
 744                               "<span class=\"log_age\">" . $co{'age_string'} . "</span>" . escapeHTML($co{'title'})) . "\n" .
 745                               "</div>\n";
 746                         print "<div class=\"link\">\n" .
 747                               "view " .
 748                               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$rev"}, "commit") . " | " .
 749                               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$rev"}, "tree") . "<br/><br/>\n" .
 750                               "</div>\n";
 751                 }
 752         }
 753         git_footer_html();
 754 } else {
 755         $action = "";
 756         die_error("", "Unknown action.");
 757 }