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 program 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 use Fcntl ':mode';
  15
  16 my $cgi = new CGI;
  17 my $version =           "118";
  18 my $my_url =            $cgi->url();
  19 my $my_uri =            $cgi->url(-absolute => 1);
  20 my $rss_link = "";
  21
  22 # absolute fs-path which will be prepended to the project path
  23 my $projectroot =       "/pub/scm";
  24
  25 # location of the git-core binaries
  26 my $gitbin =            "/usr/bin";
  27
  28 # location for temporary files needed for diffs
  29 my $gittmp =            "/tmp/gitweb";
  30
  31 # target of the home link on top of all pages
  32 my $home_link =         "/git";
  33
  34 # source of projects list
  35 #my $projects_list = $projectroot;
  36 my $projects_list = "index/index.txt";
  37
  38 # input validation and dispatch
  39 my $action = $cgi->param('a');
  40 if (defined $action) {
  41         if ($action =~ m/[^0-9a-zA-Z\.\-]+/) {
  42                 undef $action;
  43                 die_error(undef, "Invalid action parameter.");
  44         }
  45         if ($action eq "git-logo.png") {
  46                 git_logo();
  47                 exit;
  48         }
  49 } else {
  50         $action = "log";
  51 }
  52
  53 my $project = $cgi->param('p');
  54 if (defined $project) {
  55         if ($project =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
  56                 undef $project;
  57                 die_error(undef, "Non-canonical project parameter.");
  58         }
  59         if ($project =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~]/) {
  60                 undef $project;
  61                 die_error(undef, "Invalid character in project parameter.");
  62         }
  63         if (!(-d "$projectroot/$project")) {
  64                 undef $project;
  65                 die_error(undef, "No such directory.");
  66         }
  67         if (!(-e "$projectroot/$project/HEAD")) {
  68                 undef $project;
  69                 die_error(undef, "No such project.");
  70         }
  71         $rss_link = "<link rel=\"alternate\" title=\"$project log\" href=\"$my_uri?p=$project;a=rss\" type=\"application/rss+xml\"/>";
  72         $ENV{'SHA1_FILE_DIRECTORY'} = "$projectroot/$project/objects";
  73 } else {
  74         git_project_list($projects_list);
  75         exit;
  76 }
  77
  78 my $file_name = $cgi->param('f');
  79 if (defined $file_name) {
  80         if ($file_name =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
  81                 undef $file_name;
  82                 die_error(undef, "Non-canonical file parameter.");
  83         }
  84         if ($file_name =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~\:\!]/) {
  85                 undef $file_name;
  86                 die_error(undef, "Invalid character in file parameter.");
  87         }
  88 }
  89
  90 my $hash = $cgi->param('h');
  91 if (defined $hash && !($hash =~ m/^[0-9a-fA-F]{40}$/)) {
  92         undef $hash;
  93         die_error(undef, "Invalid hash parameter.");
  94 }
  95
  96 my $hash_parent = $cgi->param('hp');
  97 if (defined $hash_parent && !($hash_parent =~ m/^[0-9a-fA-F]{40}$/)) {
  98         undef $hash_parent;
  99         die_error(undef, "Invalid hash_parent parameter.");
 100 }
 101
 102 my $hash_base = $cgi->param('hb');
 103 if (defined $hash_base && !($hash_base =~ m/^[0-9a-fA-F]{40}$/)) {
 104         undef $hash_base;
 105         die_error(undef, "Invalid parent hash parameter.");
 106 }
 107
 108 my $time_back = $cgi->param('t');
 109 if (defined $time_back) {
 110         if ($time_back =~ m/^[^0-9]+$/) {
 111                 undef $time_back;
 112                 die_error(undef, "Invalid time parameter.");
 113         }
 114 }
 115
 116 if ($action eq "blob") {
 117         git_blob();
 118         exit;
 119 } elsif ($action eq "tree") {
 120         git_tree();
 121         exit;
 122 } elsif ($action eq "rss") {
 123         git_rss();
 124         exit;
 125 } elsif ($action eq "commit") {
 126         git_commit();
 127         exit;
 128 } elsif ($action eq "log") {
 129         git_log();
 130         exit;
 131 } elsif ($action eq "blobdiff") {
 132         git_blobdiff();
 133         exit;
 134 } elsif ($action eq "commitdiff") {
 135         git_commitdiff();
 136         exit;
 137 } elsif ($action eq "history") {
 138         git_history();
 139         exit;
 140 } else {
 141         undef $action;
 142         die_error(undef, "Unknown action.");
 143         exit;
 144 }
 145
 146 sub git_header_html {
 147         my $status = shift || "200 OK";
 148
 149         my $title = "git";
 150         if (defined $project) {
 151                 $title .= " - $project";
 152                 if (defined $action) {
 153                         $title .= "/$action";
 154                 }
 155         }
 156         print $cgi->header(-type=>'text/html',  -charset => 'utf-8', -status=> $status);
 157         print <<EOF;
 158 <?xml version="1.0" encoding="utf-8"?>
 159 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 160 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 161 <!-- git web interface v$version, (C) 2005, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke <ch\@gierke.de> -->
 162 <head>
 163 <title>$title</title>
 164 $rss_link
 165 <style type="text/css">
 166 body { font-family: sans-serif; font-size: 12px; margin:0px; }
 167 a { color:#0000cc; }
 168 a:hover { color:#880000; }
 169 a:visited { color:#880000; }
 170 a:active { color:#880000; }
 171 div.page_header {
 172         margin:15px 15px 0px; height:25px; padding:8px;
 173         font-size:18px; font-weight:bold; background-color:#d9d8d1;
 174 }
 175 div.page_header a:visited { color:#0000cc; }
 176 div.page_header a:hover { color:#880000; }
 177 div.page_nav { margin:0px 15px; padding:8px; border:solid #d9d8d1; border-width:0px 1px; }
 178 div.page_nav a:visited { color:#0000cc; }
 179 div.page_path { font-weight:bold; margin:0px 15px; padding:8px; border:solid #d9d8d1; border-width:0px 1px 1px}
 180 div.page_footer { margin:0px 15px 15px; height:17px; padding:4px; padding-left:8px; background-color: #d9d8d1; }
 181 div.page_footer_text { float:left; color:#555555; font-style:italic; }
 182 div.page_body { margin:0px 15px; padding:8px; border:solid #d9d8d1; border-width:0px 1px; }
 183 div.title, a.title {
 184         display:block; margin:0px 15px; padding:6px 8px;
 185         font-weight:bold; background-color:#edece6; text-decoration:none; color:#000000;
 186 }
 187 a.title:hover { background-color: #d9d8d1; }
 188 div.title_text { margin:0px 15px; padding:6px 8px; border: solid #d9d8d1; border-width:0px 1px 1px; }
 189 div.log_body { margin:0px 15px; padding:8px; padding-left:150px; border:solid #d9d8d1; border-width:0px 1px; }
 190 span.log_age { position:relative; float:left; width:142px; font-style:italic; }
 191 div.log_link { font-size:10px; font-family:sans-serif; font-style:normal; position:relative; float:left; width:142px; }
 192 div.list {
 193         display:block; margin:0px 15px; padding:4px 6px 2px; border:solid #d9d8d1; border-width:0px 1px;
 194         font-weight:bold;
 195 }
 196 div.list_head {
 197         display:block; margin:0px 15px; padding:6px 6px 4px; border:solid #d9d8d1; border-width:0px 1px 1px;
 198         font-style:italic;
 199 }
 200 div.list a { text-decoration:none; color:#000000; }
 201 div.list a:hover { color:#880000; }
 202 div.link {
 203         margin:0px 15px; padding:0px 6px 8px; border:solid #d9d8d1; border-width:0px 1px 1px;
 204         font-family:sans-serif; font-size:10px;
 205 }
 206 td { padding:5px 15px 0px 0px; font-size:12px; }
 207 th { padding-right:10px; font-size:12px; text-align:left; }
 208 span.diff_info { color:#000099; background-color:#edece6; font-style:italic; }
 209 a.rss_logo { float:right; padding:3px 0px; width:35px; line-height:10px;
 210         border:1px solid; border-color:#fcc7a5 #7d3302 #3e1a01 #ff954e;
 211         color:#ffffff; background-color:#ff6600;
 212         font-weight:bold; font-family:sans-serif; font-size:10px;
 213         text-align:center; text-decoration:none;
 214 }
 215 a.rss_logo:hover { background-color:#ee5500; }
 216 </style>
 217 </head>
 218 <body>
 219 EOF
 220         print "<div class=\"page_header\">\n" .
 221               "<a href=\"http://kernel.org/pub/software/scm/cogito\">" .
 222               "<img src=\"$my_uri?a=git-logo.png\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/></a>";
 223         print $cgi->a({-href => $home_link}, "projects") . " / ";
 224         if (defined $project) {
 225                 print $cgi->a({-href => "$my_uri?p=$project;a=log"}, escapeHTML($project));
 226                 if (defined $action) {
 227                         print " / $action";
 228                 }
 229         }
 230         print "</div>\n";
 231 }
 232
 233 sub git_footer_html {
 234         print "<div class=\"page_footer\">\n";
 235         if (defined $project) {
 236                 my $descr = git_read_description($project);
 237                 if (defined $descr) {
 238                         print "<div class=\"page_footer_text\">" . escapeHTML($descr) . "</div>\n";
 239                 }
 240                 print $cgi->a({-href => "$my_uri?p=$project;a=rss", -class => "rss_logo"}, "RSS") . "\n";
 241         }
 242         print "</div>\n" .
 243               "</body>\n" .
 244               "</html>";
 245 }
 246
 247 sub die_error {
 248         my $status = shift || "403 Forbidden";
 249         my $error = shift || "Malformed query, file missing or permission denied";
 250
 251         git_header_html($status);
 252         print "<div class=\"page_body\">\n" .
 253               "<br/><br/>\n";
 254         print "$status - $error\n";
 255         print "<br/></div>\n";
 256         git_footer_html();
 257         exit;
 258 }
 259
 260 sub git_read_head {
 261         my $path = shift;
 262
 263         open my $fd, "$projectroot/$path/HEAD" || return undef;
 264         my $head = <$fd>;
 265         close $fd;
 266         chomp $head;
 267         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 268                 return $head;
 269         } else {
 270                 return undef;
 271         }
 272 }
 273
 274 sub git_read_description {
 275         my $path = shift;
 276
 277         open my $fd, "$projectroot/$path/description" || return undef;
 278         my $descr = <$fd>;
 279         close $fd;
 280         chomp $descr;
 281         return $descr;
 282 }
 283
 284 sub git_read_commit {
 285         my $commit = shift;
 286         my %co;
 287         my @parents;
 288
 289         open my $fd, "-|", "$gitbin/git-cat-file commit $commit" || return;
 290         while (my $line = <$fd>) {
 291                 last if $line eq "\n";
 292                 chomp $line;
 293                 if ($line =~ m/^tree (.*)$/) {
 294                         $co{'tree'} = $1;
 295                 } elsif ($line =~ m/^parent (.*)$/) {
 296                         push @parents, $1;
 297                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 298                         $co{'author'} = $1;
 299                         $co{'author_epoch'} = $2;
 300                         $co{'author_tz'} = $3;
 301                         $co{'author_name'} = $co{'author'};
 302                         $co{'author_name'} =~ s/ <.*//;
 303                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 304                         $co{'committer'} = $1;
 305                         $co{'committer_epoch'} = $2;
 306                         $co{'committer_tz'} = $3;
 307                         $co{'committer_name'} = $co{'committer'};
 308                         $co{'committer_name'} =~ s/ <.*//;
 309                 }
 310         }
 311         $co{'parents'} = \@parents;
 312         $co{'parent'} = $parents[0];
 313         my (@comment) = map { chomp; $_ } <$fd>;
 314         $co{'comment'} = \@comment;
 315         $co{'title'} = $comment[0];
 316         close $fd || return;
 317         if (!defined $co{'tree'}) {
 318                 return undef
 319         };
 320
 321         my $age = time - $co{'committer_epoch'};
 322         $co{'age'} = $age;
 323         if ($age > 60*60*24*365*2) {
 324                 $co{'age_string'} = (int $age/60/60/24/365);
 325                 $co{'age_string'} .= " years ago";
 326         } elsif ($age > 60*60*24*365/12*2) {
 327                 $co{'age_string'} = int $age/60/60/24/365/12;
 328                 $co{'age_string'} .= " months ago";
 329         } elsif ($age > 60*60*24*7*2) {
 330                 $co{'age_string'} = int $age/60/60/24/7;
 331                 $co{'age_string'} .= " weeks ago";
 332         } elsif ($age > 60*60*24*2) {
 333                 $co{'age_string'} = int $age/60/60/24;
 334                 $co{'age_string'} .= " days ago";
 335         } elsif ($age > 60*60*2) {
 336                 $co{'age_string'} = int $age/60/60;
 337                 $co{'age_string'} .= " hours ago";
 338         } elsif ($age > 60*2) {
 339                 $co{'age_string'} = int $age/60;
 340                 $co{'age_string'} .= " minutes ago";
 341         } elsif ($age > 2) {
 342                 $co{'age_string'} = int $age;
 343                 $co{'age_string'} .= " seconds ago";
 344         } else {
 345                 $co{'age_string'} .= " right now";
 346         }
 347         return %co;
 348 }
 349
 350 sub git_diff_html {
 351         my $from = shift;
 352         my $from_name = shift;
 353         my $to = shift;
 354         my $to_name = shift;
 355
 356         my $from_tmp = "/dev/null";
 357         my $to_tmp = "/dev/null";
 358         my $pid = $$;
 359
 360         # create tmp from-file
 361         if (defined $from) {
 362                 $from_tmp = "$gittmp/gitweb_" . $$ . "_from";
 363                 open my $fd2, "> $from_tmp";
 364                 open my $fd, "-|", "$gitbin/git-cat-file blob $from";
 365                 my @file = <$fd>;
 366                 print $fd2 @file;
 367                 close $fd2;
 368                 close $fd;
 369         }
 370
 371         # create tmp to-file
 372         if (defined $to) {
 373                 $to_tmp = "$gittmp/gitweb_" . $$ . "_to";
 374                 open my $fd2, "> $to_tmp";
 375                 open my $fd, "-|", "$gitbin/git-cat-file blob $to";
 376                 my @file = <$fd>;
 377                 print $fd2 @file;
 378                 close $fd2;
 379                 close $fd;
 380         }
 381
 382         open my $fd, "-|", "/usr/bin/diff -u -p -L $from_name -L $to_name $from_tmp $to_tmp";
 383         while (my $line = <$fd>) {
 384                 my $char = substr($line,0,1);
 385                 # skip errors
 386                 next if $char eq '\\';
 387                 # color the diff
 388                 print '<span style="color: #008800;">' if $char eq '+';
 389                 print '<span style="color: #CC0000;">' if $char eq '-';
 390                 print '<span style="color: #990099;">' if $char eq '@';
 391                 print escapeHTML($line);
 392                 print '</span>' if $char eq '+' or $char eq '-' or $char eq '@';
 393         }
 394         close $fd;
 395
 396         if (defined $from) {
 397                 unlink($from_tmp);
 398         }
 399         if (defined $to) {
 400                 unlink($to_tmp);
 401         }
 402 }
 403
 404 sub mode_str {
 405         my $mode = oct shift;
 406
 407         if (S_ISDIR($mode & S_IFMT)) {
 408                 return 'drwxr-xr-x';
 409         } elsif (S_ISLNK($mode)) {
 410                 return 'lrwxrwxrwx';
 411         } elsif (S_ISREG($mode)) {
 412                 # git cares only about the executable bit
 413                 if ($mode & S_IXUSR) {
 414                         return '-rwxr-xr-x';
 415                 } else {
 416                         return '-rw-r--r--';
 417                 };
 418         } else {
 419                 return '----------';
 420         }
 421 }
 422
 423 sub file_type {
 424         my $mode = oct shift;
 425
 426         if (S_ISDIR($mode & S_IFMT)) {
 427                 return "directory";
 428         } elsif (S_ISLNK($mode)) {
 429                 return "symlink";
 430         } elsif (S_ISREG($mode)) {
 431                 return "file";
 432         } else {
 433                 return "unknown";
 434         }
 435 }
 436
 437 sub date_str {
 438         my $epoch = shift;
 439         my $tz = shift || "-0000";
 440
 441         my %date;
 442         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 443         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 444         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 445         $date{'hour'} = $hour;
 446         $date{'minute'} = $min;
 447         $date{'mday'} = $mday;
 448         $date{'day'} = $days[$wday];
 449         $date{'month'} = $months[$mon];
 450         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 451         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 452
 453         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 454         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 455         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 456         $date{'hour_local'} = $hour;
 457         $date{'minute_local'} = $min;
 458         $date{'tz_local'} = $tz;
 459         return %date;
 460 }
 461
 462 # git-logo (cached in browser for one day)
 463 sub git_logo() {
 464         print $cgi->header(-type => 'image/png', -expires => '+1d');
 465         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
 466         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
 467                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
 468                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
 469                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
 470                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
 471                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
 472                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
 473                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
 474                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
 475                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
 476                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
 477                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
 478                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
 479 }
 480
 481 sub git_project_list {
 482         my $project_list = shift;
 483         my @list;
 484
 485         if (-d $project_list) {
 486                 # search in directory
 487                 my $dir = $project_list;
 488                 opendir my $dh, $dir || return undef;
 489                 while (my $dir = readdir($dh)) {
 490                         if (-e "$projectroot/$dir/HEAD") {
 491                                 push @list, $dir;
 492                         }
 493                 }
 494                 closedir($dh);
 495         } elsif (-e $project_list) {
 496                 # read from file
 497                 open my $fd , $project_list || return undef;
 498                 while (my $line = <$fd>) {
 499                         chomp $line;
 500                         if (-e "$projectroot/$line/HEAD") {
 501                                 push @list, $line;
 502                         }
 503                 }
 504                 close $fd;
 505         }
 506
 507         if (!@list) {
 508                 die_error(undef, "No project found.");
 509         }
 510         @list = sort @list;
 511
 512         git_header_html();
 513         print "<div class=\"page_body\">\n";
 514         print "<table cellspacing=\"0\">\n";
 515         print "<tr>\n" .
 516               "<th>Project</th>\n" .
 517               "<th>Description</th>\n" .
 518               "<th>Owner</th>\n" .
 519               "<th>last change</th>\n" .
 520               "</tr>\n" .
 521               "<br/>";
 522         foreach my $proj (@list) {
 523                 my $head = git_read_head($proj);
 524                 if (!defined $head) {
 525                         next;
 526                 }
 527                 $ENV{'SHA1_FILE_DIRECTORY'} = "$projectroot/$proj/objects";
 528                 my %co = git_read_commit($head);
 529                 if (!%co) {
 530                         next;
 531                 }
 532                 my $descr = git_read_description($proj) || "";
 533                 my $owner = "";
 534                 my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat("$projectroot/$proj");
 535                 my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 536                 if (defined $gcos) {
 537                         $owner = $gcos;
 538                         $owner =~ s/[,;].*$//;
 539                 }
 540                 print "<tr>\n" .
 541                       "<td>" . $cgi->a({-href => "$my_uri?p=$proj;a=log"}, escapeHTML($proj)) . "</td>\n" .
 542                       "<td>$descr</td>\n" .
 543                       "<td><i>$owner</i></td>\n";
 544                 if ($co{'age'} < 60*60*2) {
 545                         print "<td><span style =\"color: #009900;\"><b><i>" . $co{'age_string'} . "</i></b></span></td>\n";
 546                 } elsif ($co{'age'} < 60*60*24*2) {
 547                         print "<td><span style =\"color: #009900;\"><i>" . $co{'age_string'} . "</i></span></td>\n";
 548                 } else {
 549                         print "<td><i>" . $co{'age_string'} . "</i></td>\n";
 550                 }
 551                 print "</tr>\n";
 552         }
 553         print "</table>\n" .
 554               "<br/>\n" .
 555               "</div>\n";
 556         git_footer_html();
 557 }
 558
 559 sub git_get_hash_by_path {
 560         my $base = shift;
 561         my $path = shift;
 562
 563         my $tree = $base;
 564         my @parts = split '/', $path;
 565         while (my $part = shift @parts) {
 566                 open my $fd, "-|", "$gitbin/git-ls-tree $tree" || die_error(undef, "Open git-ls-tree failed.");
 567                 my (@entries) = map { chomp; $_ } <$fd>;
 568                 close $fd || die_error(undef, "Reading tree failed.");
 569                 foreach my $line (@entries) {
 570                         #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
 571                         $line =~ m/^([0-9]+)\t(.*)\t(.*)\t(.*)$/;
 572                         my $t_mode = $1;
 573                         my $t_type = $2;
 574                         my $t_hash = $3;
 575                         my $t_name = $4;
 576                         if ($t_name eq $part) {
 577                                 if (!(@parts)) {
 578                                         return $t_hash;
 579                                 }
 580                                 if ($t_type eq "tree") {
 581                                         $tree = $t_hash;
 582                                 }
 583                                 last;
 584                         }
 585                 }
 586         }
 587 }
 588
 589 sub git_blob {
 590         if (!defined $hash && defined $file_name) {
 591                 my $base = $hash_base || git_read_head($project);
 592                 $hash = git_get_hash_by_path($base, $file_name, "blob");
 593         }
 594         open my $fd, "-|", "$gitbin/git-cat-file blob $hash" || die_error(undef, "Open failed.");
 595         my $base = $file_name || "";
 596         git_header_html();
 597         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 598                 print "<div class=\"page_nav\"> view\n" .
 599                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") .
 600                       " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "diffs") .
 601                       " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash_base"}, "tree");
 602                 if (defined $file_name) {
 603                         print " | " . $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash_base;f=$file_name"}, "history");
 604                 }
 605                 print "<br/><br/>\n" .
 606                       "</div>\n";
 607                 print "<div>\n" .
 608                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) . "\n";
 609         } else {
 610                 print "<div class=\"page_nav\">\n" .
 611                       "<br/><br/></div>\n" .
 612                       "<div class=\"title\">$hash</div>\n";
 613         }
 614         if (defined $file_name) {
 615                 print "<div class=\"page_path\">/$file_name</div>\n";
 616         }
 617         print "<div class=\"page_body\"><pre>\n" .
 618         my $nr;
 619         while (my $line = <$fd>) {
 620                 $nr++;
 621                 printf "<span style =\"color: #999999;\">%4i\t</span>%s", $nr, escapeHTML($line);;
 622         }
 623         close $fd || print "Reading blob failed.\n";
 624         print "</pre>\n";
 625         print "</div>";
 626         git_footer_html();
 627 }
 628
 629 sub git_tree {
 630         if (!defined $hash) {
 631                 $hash = git_read_head($project);
 632                 if (defined $file_name) {
 633                         my $base = $hash_base || git_read_head($project);
 634                         $hash = git_get_hash_by_path($base, $file_name, "tree");
 635                 }
 636         }
 637         open my $fd, "-|", "$gitbin/git-ls-tree $hash" || die_error(undef, "Open git-ls-tree failed.");
 638         my (@entries) = map { chomp; $_ } <$fd>;
 639         close $fd || die_error(undef, "Reading tree failed.");
 640
 641         git_header_html();
 642         my $base_key = "";
 643         my $file_key = "";
 644         my $base = "";
 645         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 646                 $base_key = ";hb=$hash_base";
 647                 print "<div class=\"page_nav\"> view\n" .
 648                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") . " | " .
 649                       $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "diffs") . " | " .
 650                       $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash_base"}, "tree") .
 651                       "<br/><br/>\n" .
 652                       "</div>\n";
 653                 print "<div>\n" .
 654                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 655                       "</div>\n";
 656         } else {
 657                 print "<div class=\"page_nav\">\n";
 658                 print "<br/><br/></div>\n";
 659                 print "<div class=\"title\">$hash</div>\n";
 660         }
 661         if (defined $file_name) {
 662                 $base = "$file_name/";
 663                 print "<div class=\"page_path\">/$file_name</div>\n";
 664         } else {
 665                 print "<div class=\"page_path\">/</div>\n";
 666         }
 667         print "<div class=\"page_body\">\n";
 668         print "<pre>\n";
 669         foreach my $line (@entries) {
 670                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
 671                 $line =~ m/^([0-9]+)\t(.*)\t(.*)\t(.*)$/;
 672                 my $t_mode = $1;
 673                 my $t_type = $2;
 674                 my $t_hash = $3;
 675                 my $t_name = $4;
 676                 $file_key = ";f=$base$t_name";
 677                 if ($t_type eq "blob") {
 678                         print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$t_hash" . $base_key . $file_key}, $t_name);
 679                         if (S_ISLNK(oct $t_mode)) {
 680                                 open my $fd, "-|", "$gitbin/git-cat-file blob $t_hash";
 681                                 my $target = <$fd>;
 682                                 close $fd;
 683                                 print "\t -> $target";
 684                         }
 685                         print "\n";
 686                 } elsif ($t_type eq "tree") {
 687                         print mode_str($t_mode). " " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=$t_hash" . $base_key . $file_key}, $t_name) . "\n";
 688                 }
 689         }
 690         print "</pre>\n";
 691         print "</div>";
 692         git_footer_html();
 693 }
 694
 695 sub git_rss {
 696         open my $fd, "-|", "$gitbin/git-rev-list --max-count=20 " . git_read_head($project) || die_error(undef, "Open failed.");
 697         my (@revlist) = map { chomp; $_ } <$fd>;
 698         close $fd || die_error(undef, "Reading rev-list failed.");
 699
 700         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
 701         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
 702               "<rss version=\"0.91\">\n";
 703         print "<channel>\n";
 704         print "<title>$project</title>\n".
 705               "<link> " . $my_url . "/$project/log</link>\n".
 706               "<description>$project log</description>\n".
 707               "<language>en</language>\n";
 708
 709         foreach my $commit (@revlist) {
 710                 my %co = git_read_commit($commit);
 711                 my %ad = date_str($co{'author_epoch'});
 712                 print "<item>\n" .
 713                       "\t<title>" . sprintf("%d %s %02d:%02d", $ad{'mday'}, $ad{'month'}, $ad{'hour'}, $ad{'min'}) . " - " . escapeHTML($co{'title'}) . "</title>\n" .
 714                       "\t<link> " . $my_url . "?p=$project;a=commit;h=$commit</link>\n" .
 715                       "\t<description>";
 716                 my $comment = $co{'comment'};
 717                 foreach my $line (@$comment) {
 718                         print escapeHTML($line) . "<br/>\n";
 719                 }
 720                 print "\t</description>\n" .
 721                       "</item>\n";
 722         }
 723         print "</channel></rss>";
 724 }
 725
 726 sub git_log {
 727         my $head = git_read_head($project);
 728         my $limit_option = "";
 729         if (!defined $time_back) {
 730                 $limit_option = "--max-count=10";
 731         } elsif ($time_back > 0) {
 732                 my $date = time - $time_back*24*60*60;
 733                 $limit_option = "--max-age=$date";
 734         }
 735         open my $fd, "-|", "$gitbin/git-rev-list $limit_option $head" || die_error(undef, "Open failed.");
 736         my (@revlist) = map { chomp; $_ } <$fd>;
 737         close $fd || die_error(undef, "Reading rev-list failed.");
 738
 739         git_header_html();
 740         print "<div class=\"page_nav\">\n";
 741         print "view  ";
 742         print $cgi->a({-href => "$my_uri?p=$project;a=log"}, "last 10") . " | " .
 743               $cgi->a({-href => "$my_uri?p=$project;a=log;t=1"}, "day") . " | " .
 744               $cgi->a({-href => "$my_uri?p=$project;a=log;t=7"}, "week") . " | " .
 745               $cgi->a({-href => "$my_uri?p=$project;a=log;t=31"}, "month") . " | " .
 746               $cgi->a({-href => "$my_uri?p=$project;a=log;t=365"}, "year") . " | " .
 747               $cgi->a({-href => "$my_uri?p=$project;a=log;t=0"}, "all") . "<br/>\n";
 748         print "<br/><br/>\n" .
 749               "</div>\n";
 750
 751         if (!@revlist) {
 752                 my %co = git_read_commit($head);
 753                 print "<div class=\"page_body\"> Last change " . $co{'age_string'} . ".<br/><br/></div>\n";
 754         }
 755
 756         foreach my $commit (@revlist) {
 757                 my %co = git_read_commit($commit);
 758                 next if !%co;
 759                 my %ad = date_str($co{'author_epoch'});
 760                 print "<div>\n" .
 761                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit", -class => "title"},
 762                       "<span class=\"log_age\">" . $co{'age_string'} . "</span>" . escapeHTML($co{'title'})) . "\n" .
 763                       "</div>\n";
 764                 print "<div class=\"title_text\">\n" .
 765                       "<div class=\"log_link\">\n" .
 766                       "view " . $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") . " | " .
 767                       $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$commit"}, "diff") . "<br/>\n" .
 768                       "</div>\n" .
 769                       "<i>" . escapeHTML($co{'author_name'}) .  " [" . $ad{'rfc2822'} . "]</i><br/>\n" .
 770                       "</div>\n" .
 771                       "<div class=\"log_body\">\n";
 772                 my $comment = $co{'comment'};
 773                 my $empty = 0;
 774                 foreach my $line (@$comment) {
 775                         if ($line =~ m/^(signed.off|acked).by/i) {
 776                                 next;
 777                         }
 778                         if ($line eq "") {
 779                                 if ($empty) {
 780                                         next;
 781                                 }
 782                                 $empty = 1;
 783                         } else {
 784                                 $empty = 0;
 785                         }
 786                         print escapeHTML($line) . "<br/>\n";
 787                 }
 788                 if (!$empty) {
 789                         print "<br/>\n";
 790                 }
 791                 print "</div>\n";
 792         }
 793         git_footer_html();
 794 }
 795
 796 sub git_commit {
 797         my %co = git_read_commit($hash);
 798         if (!%co) {
 799                 die_error(undef, "Unknown commit object.");
 800         }
 801         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
 802         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
 803
 804         my @difftree;
 805         if (defined $co{'parent'}) {
 806                 open my $fd, "-|", "$gitbin/git-diff-tree -r " . $co{'parent'} . " $hash" || die_error(undef, "Open failed.");
 807                 @difftree = map { chomp; $_ } <$fd>;
 808                 close $fd || die_error(undef, "Reading diff-tree failed.");
 809         } else {
 810                 # fake git-diff-tree output for initial revision
 811                 open my $fd, "-|", "$gitbin/git-ls-tree -r $hash" || die_error(undef, "Open failed.");
 812                 @difftree = map { chomp;  "+" . $_ } <$fd>;
 813                 close $fd || die_error(undef, "Reading ls-tree failed.");
 814         }
 815         git_header_html();
 816         print "<div class=\"page_nav\"> view\n" .
 817               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
 818               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | \n" .
 819               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash"}, "tree") . "\n" .
 820               "<br/><br/></div>\n";
 821         if (defined $co{'parent'}) {
 822                 print "<div>\n" .
 823                       $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 824                       "</div>\n";
 825         } else {
 826                 print "<div>\n" .
 827                       $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 828                       "</div>\n";
 829         }
 830         print "<div class=\"title_text\">\n" .
 831               "<table cellspacing=\"0\">\n";
 832         print "<tr><td>author</td><td>" . escapeHTML($co{'author'}) . "</td></tr>\n".
 833               "<tr><td></td><td> " . $ad{'rfc2822'};
 834         if ($ad{'hour_local'} < 6) {
 835                 printf(" (<span style=\"color: #cc0000;\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
 836         } else {
 837                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
 838         }
 839         print "</td></tr>\n";
 840         print "<tr><td>committer</td><td>" . escapeHTML($co{'committer'}) . "</td></tr>\n";
 841         print "<tr><td></td><td> " . $cd{'rfc2822'} .
 842               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
 843         print "<tr><td>commit</td><td style=\"font-family: monospace;\">$hash</td></tr>\n";
 844         print "<tr><td>tree</td><td style=\"font-family: monospace;\">" .
 845               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=" . $hash}, $co{'tree'}) . "</td></tr>\n";
 846         my $parents  = $co{'parents'};
 847         foreach my $par (@$parents) {
 848                 print "<tr><td>parent</td><td style=\"font-family: monospace;\">" .
 849                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$par"}, $par) . "</td></tr>\n";
 850         }
 851         print "</table>".
 852               "</div>\n";
 853         print "<div class=\"page_body\">\n";
 854         my $comment = $co{'comment'};
 855         my $empty = 0;
 856         my $signed = 0;
 857         foreach my $line (@$comment) {
 858                 # print only one empty line
 859                 if ($line eq "") {
 860                         if ($empty || $signed) {
 861                                 next;
 862                         }
 863                         $empty = 1;
 864                 } else {
 865                         $empty = 0;
 866                 }
 867                 if ($line =~ m/(signed.off|acked).by/i) {
 868                         $signed = 1;
 869                         print "<span style=\"color: #888888\">" . escapeHTML($line) . "</span><br/>\n";
 870                 } else {
 871                         $signed = 0;
 872                         print escapeHTML($line) . "<br/>\n";
 873                 }
 874         }
 875         print "</div>\n";
 876         print "<div class=\"list_head\">\n";
 877         if ($#difftree > 10) {
 878                 print(($#difftree + 1) . " files changed:\n");
 879         }
 880         print "</div>\n";
 881         foreach my $line (@difftree) {
 882                 # '*100644->100644      blob    9f91a116d91926df3ba936a80f020a6ab1084d2b->bb90a0c3a91eb52020d0db0e8b4f94d30e02d596      net/ipv4/route.c'
 883                 # '+100644      blob    4a83ab6cd565d21ab0385bac6643826b83c2fcd4        arch/arm/lib/bitops.h'
 884                 # '*100664->100644      blob    b1a8e3dd5556b61dd771d32307c6ee5d7150fa43->b1a8e3dd5556b61dd771d32307c6ee5d7150fa43      show-files.c'
 885                 # '*100664->100644      blob    d08e895238bac36d8220586fdc28c27e1a7a76d3->d08e895238bac36d8220586fdc28c27e1a7a76d3      update-cache.c'
 886                 $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
 887                 my $op = $1;
 888                 my $mode = $2;
 889                 my $type = $3;
 890                 my $id = $4;
 891                 my $file = $5;
 892                 if ($type eq "blob") {
 893                         if ($op eq "+") {
 894                                 my $mode_chng = "";
 895                                 if (S_ISREG(oct $mode)) {
 896                                         $mode_chng = sprintf(" with mode: %04o", (oct $mode) & 0777);
 897                                 }
 898                                 print "<div class=\"list\">\n" .
 899                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"},
 900                                       escapeHTML($file) . " <span style=\"color: #008000;\">[new " . file_type($mode) . $mode_chng . "]</span>") . "\n" .
 901                                       "</div>";
 902                                 print "<div class=\"link\">\n" .
 903                                       "view " .
 904                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"}, "file") . "<br/>\n" .
 905                                       "</div>\n";
 906                         } elsif ($op eq "-") {
 907                                 print "<div class=\"list\">\n" .
 908                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"},
 909                                       escapeHTML($file) .  " <span style=\"color: #c00000;\">[deleted " . file_type($mode) . "]</span>") . "\n" .
 910                                       "</div>";
 911                                 print "<div class=\"link\">\n" .
 912                                       "view " .
 913                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"}, "file") . " | " .
 914                                       $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") . "<br/>\n" .
 915                                       "</div>\n";
 916                         } elsif ($op eq "*") {
 917                                 $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
 918                                 my $from_id = $1;
 919                                 my $to_id = $2;
 920                                 $mode =~ m/^([0-7]{6})->([0-7]{6})$/;
 921                                 my $from_mode = $1;
 922                                 my $to_mode = $2;
 923                                 my $mode_chnge = "";
 924                                 if ($from_mode != $to_mode) {
 925                                         $mode_chnge = " <span style=\"color: #888888;\">[changed";
 926                                         if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
 927                                                 $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
 928                                         }
 929                                         if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
 930                                                 if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
 931                                                         $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
 932                                                 } elsif (S_ISREG($to_mode)) {
 933                                                         $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
 934                                                 }
 935                                         }
 936                                         $mode_chnge .= "]</span>\n";
 937                                 }
 938                                 print "<div class=\"list\">\n";
 939                                 if ($to_id ne $from_id) {
 940                                         print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"},
 941                                               escapeHTML($file) . $mode_chnge) . "\n" .
 942                                               "</div>\n";
 943                                 } else {
 944                                         print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"},
 945                                               escapeHTML($file) . $mode_chnge) . "\n" .
 946                                               "</div>\n";
 947                                 }
 948                                 print "<div class=\"link\">\n" .
 949                                       "view ";
 950                                 if ($to_id ne $from_id) {
 951                                         print $cgi->a({-href => "$my_uri?p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"}, "diff") . " | ";
 952                                 }
 953                                 print $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, "file") . " | " .
 954                                       $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash;f=$file"}, "history") . "<br/>\n" .
 955                                       "</div>\n";
 956                         }
 957                 }
 958         }
 959         git_footer_html();
 960 }
 961
 962 sub git_blobdiff {
 963         mkdir($gittmp, 0700);
 964         git_header_html();
 965         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
 966                 print "<div class=\"page_nav\"> view\n" .
 967                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base"}, "commit") .
 968                       " | " . $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash_base"}, "diffs") .
 969                       " | " . $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash_base"}, "tree");
 970                         if (defined $file_name) {
 971                                 print " | " . $cgi->a({-href => "$my_uri?p=$project;a=history;h=$hash_base;f=$file_name"}, "history");
 972                         }
 973                 print "<br/><br/>\n" .
 974                       "</div>\n";
 975                 print "<div>\n" .
 976                       $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash_base", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
 977                       "</div>\n";
 978         } else {
 979                 print "<div class=\"page_nav\">\n" .
 980                       "<br/><br/></div>\n" .
 981                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
 982         }
 983         if (defined $file_name) {
 984                 print "<div class=\"page_path\">\n" .
 985                       "/$file_name\n" .
 986                       "</div>\n";
 987         }
 988         print "<div class=\"page_body\">\n" .
 989               "<pre>\n";
 990         print "<span class=\"diff_info\">blob:" .
 991               $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name"}, $hash_parent) .
 992               " -> blob:" .
 993               $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name"}, $hash) .
 994               "</span>\n";
 995         git_diff_html($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
 996         print "</pre>\n" .
 997               "</div>";
 998         git_footer_html();
 999 }
1000
1001 sub git_commitdiff {
1002         mkdir($gittmp, 0700);
1003         my %co = git_read_commit($hash);
1004         if (!%co) {
1005                 die_error(undef, "Unknown commit object.");
1006         }
1007         open my $fd, "-|", "$gitbin/git-diff-tree -r " . $co{'parent'} . " $hash" || die_error(undef, "Open failed.");
1008         my (@difftree) = map { chomp; $_ } <$fd>;
1009         close $fd || die_error(undef, "Reading diff-tree failed.");
1010
1011         git_header_html();
1012         print "<div class=\"page_nav\"> view\n" .
1013               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | \n" .
1014               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | \n" .
1015               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" .  $co{'tree'} . ";hb=$hash"}, "tree") . "\n" .
1016               "<br/><br/></div>\n";
1017         print "<div>\n" .
1018               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
1019               "</div>\n";
1020         print "<div class=\"page_body\">\n" .
1021               "<pre>\n";
1022         foreach my $line (@difftree) {
1023                 # '*100644->100644      blob    8e5f9bbdf4de94a1bc4b4da8cb06677ce0a57716->8da3a306d0c0c070d87048d14a033df02f40a154      Makefile'
1024                 $line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/;
1025                 my $op = $1;
1026                 my $mode = $2;
1027                 my $type = $3;
1028                 my $id = $4;
1029                 my $file = $5;
1030                 if ($type eq "blob") {
1031                         if ($op eq "+") {
1032                                 print "<span class=\"diff_info\">" .  file_type($mode) . ":" .
1033                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"}, $id) . "(new)" .
1034                                       "</span>\n";
1035                                 git_diff_html(undef, "/dev/null", $id, "b/$file");
1036                         } elsif ($op eq "-") {
1037                                 print "<span class=\"diff_info\">" . file_type($mode) . ":" .
1038                                       $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$id;hb=$hash;f=$file"}, $id) . "(deleted)" .
1039                                       "</span>\n";
1040                                 git_diff_html($id, "a/$file", undef, "/dev/null");
1041                         } elsif ($op eq "*") {
1042                                 $id =~ m/([0-9a-fA-F]+)->([0-9a-fA-F]+)/;
1043                                 my $from_id = $1;
1044                                 my $to_id = $2;
1045                                 $mode =~ m/([0-7]+)->([0-7]+)/;
1046                                 my $from_mode = $1;
1047                                 my $to_mode = $2;
1048                                 if ($from_id ne $to_id) {
1049                                         print "<span class=\"diff_info\">" .
1050                                               file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$from_id;hb=$hash;f=$file"}, $from_id) .
1051                                               " -> " .
1052                                               file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?p=$project;a=blob;h=$to_id;hb=$hash;f=$file"}, $to_id);
1053                                         print "</span>\n";
1054                                         git_diff_html($from_id, "a/$file",  $to_id, "b/$file");
1055                                 }
1056                         }
1057                 }
1058         }
1059         print "</pre><br/>\n";
1060         print "</div>";
1061         git_footer_html();
1062 }
1063
1064 sub git_history {
1065         if (!defined $hash) {
1066                 $hash = git_read_head($project);
1067         }
1068         my %co = git_read_commit($hash);
1069         if (!%co) {
1070                 die_error(undef, "Unknown commit object.");
1071         }
1072         git_header_html();
1073         print "<div class=\"page_nav\"> view\n" .
1074               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash"}, "commit") . " | " .
1075               $cgi->a({-href => "$my_uri?p=$project;a=commitdiff;h=$hash"}, "diffs") . " | " .
1076               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" . $co{'tree'} . ";hb=$hash"}, "tree") .
1077               "<br/><br/>\n" .
1078               "</div>\n";
1079         print "<div>\n" .
1080               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$hash", -class => "title"}, escapeHTML($co{'title'})) . "\n" .
1081               "</div>\n";
1082         print "<div class=\"page_path\">\n" .
1083               "/$file_name<br/>\n";
1084         print "</div>\n";
1085         open my $fd, "-|", "$gitbin/git-rev-list $hash | $gitbin/git-diff-tree -r --stdin $file_name";
1086         my $commit;
1087         while (my $line = <$fd>) {
1088                 if ($line =~ m/^([0-9a-fA-F]{40}) /){
1089                         $commit = $1;
1090                         next;
1091                 }
1092                 if ($line =~ m/^(.)(.*)\t(.*)\t(.*)\t(.*)$/ && (defined $commit)) {
1093                         my $type = $3;
1094                         my $file = $5;
1095                         if ($file ne $file_name || $type ne "blob") {
1096                                 next;
1097                         }
1098                         my %co = git_read_commit($commit);
1099                         if (!%co) {
1100                                 next;
1101                         }
1102                         print "<div class=\"list\">\n" .
1103                               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"},
1104                               "<span class=\"log_age\">" . $co{'age_string'} . "</span>" . escapeHTML($co{'title'})) . "\n" .
1105                               "</div>\n";
1106                         print "<div class=\"link\">\n" .
1107                               "view " .
1108                               $cgi->a({-href => "$my_uri?p=$project;a=commit;h=$commit"}, "commit") . " | " .
1109                               $cgi->a({-href => "$my_uri?p=$project;a=tree;h=" .  $co{'tree'} . ";hb=$commit"}, "tree") . "<br/><br/>\n" .
1110                               "</div>\n";
1111                         undef $commit;
1112                 }
1113         }
1114         close $fd;
1115         git_footer_html();
1116 }