gitweb/gitweb.cgi

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 binmode STDOUT, ':utf8';
  18
  19 our $cgi = new CGI;
  20 our $version = "267";
  21 our $my_url = $cgi->url();
  22 our $my_uri = $cgi->url(-absolute => 1);
  23 our $rss_link = "";
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "/usr/bin/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "/home/kay/public_html/pub/scm";
  32
  33 # version of the core git binary
  34 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  35
  36 # location for temporary files needed for diffs
  37 our $git_temp = "/tmp/gitweb";
  38 if (! -d $git_temp) {
  39         mkdir($git_temp, 0700) || die_error("Couldn't mkdir $git_temp");
  40 }
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri;
  44
  45 # name of your site or organization to appear in page titles
  46 # replace this with something more descriptive for clearer bookmarks
  47 our $site_name = $ENV{'SERVER_NAME'} || "Untitled";
  48
  49 # html text to include at home page
  50 our $home_text = "indextext.html";
  51
  52 # URI of default stylesheet
  53 our $stylesheet = "gitweb.css";
  54
  55 # source of projects list
  56 #our $projects_list = $projectroot;
  57 our $projects_list = "index/index.aux";
  58
  59 # default blob_plain mimetype and default charset for text/plain blob
  60 our $default_blob_plain_mimetype = 'text/plain';
  61 our $default_text_plain_charset  = undef;
  62
  63 # file to use for guessing MIME types before trying /etc/mime.types
  64 # (relative to the current git repository)
  65 our $mimetypes_file = undef;
  66
  67 # input validation and dispatch
  68 our $action = $cgi->param('a');
  69 if (defined $action) {
  70         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  71                 undef $action;
  72                 die_error(undef, "Invalid action parameter.");
  73         }
  74         if ($action eq "git-logo.png") {
  75                 git_logo();
  76                 exit;
  77         } elsif ($action eq "opml") {
  78                 git_opml();
  79                 exit;
  80         }
  81 }
  82
  83 our $order = $cgi->param('o');
  84 if (defined $order) {
  85         if ($order =~ m/[^0-9a-zA-Z_]/) {
  86                 undef $order;
  87                 die_error(undef, "Invalid order parameter.");
  88         }
  89 }
  90
  91 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  92 if (defined $project) {
  93         $project =~ s|^/||; $project =~ s|/$||;
  94         $project = validate_input($project);
  95         if (!defined($project)) {
  96                 die_error(undef, "Invalid project parameter.");
  97         }
  98         if (!(-d "$projectroot/$project")) {
  99                 undef $project;
 100                 die_error(undef, "No such directory.");
 101         }
 102         if (!(-e "$projectroot/$project/HEAD")) {
 103                 undef $project;
 104                 die_error(undef, "No such project.");
 105         }
 106         $rss_link = "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
 107                     "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 108         $ENV{'GIT_DIR'} = "$projectroot/$project";
 109 } else {
 110         git_project_list();
 111         exit;
 112 }
 113
 114 our $file_name = $cgi->param('f');
 115 if (defined $file_name) {
 116         $file_name = validate_input($file_name);
 117         if (!defined($file_name)) {
 118                 die_error(undef, "Invalid file parameter.");
 119         }
 120 }
 121
 122 our $hash = $cgi->param('h');
 123 if (defined $hash) {
 124         $hash = validate_input($hash);
 125         if (!defined($hash)) {
 126                 die_error(undef, "Invalid hash parameter.");
 127         }
 128 }
 129
 130 our $hash_parent = $cgi->param('hp');
 131 if (defined $hash_parent) {
 132         $hash_parent = validate_input($hash_parent);
 133         if (!defined($hash_parent)) {
 134                 die_error(undef, "Invalid hash parent parameter.");
 135         }
 136 }
 137
 138 our $hash_base = $cgi->param('hb');
 139 if (defined $hash_base) {
 140         $hash_base = validate_input($hash_base);
 141         if (!defined($hash_base)) {
 142                 die_error(undef, "Invalid hash base parameter.");
 143         }
 144 }
 145
 146 our $page = $cgi->param('pg');
 147 if (defined $page) {
 148         if ($page =~ m/[^0-9]$/) {
 149                 undef $page;
 150                 die_error(undef, "Invalid page parameter.");
 151         }
 152 }
 153
 154 our $searchtext = $cgi->param('s');
 155 if (defined $searchtext) {
 156         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 157                 undef $searchtext;
 158                 die_error(undef, "Invalid search parameter.");
 159         }
 160         $searchtext = quotemeta $searchtext;
 161 }
 162
 163 sub validate_input {
 164         my $input = shift;
 165
 166         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 167                 return $input;
 168         }
 169         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 170                 return undef;
 171         }
 172         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 173                 return undef;
 174         }
 175         return $input;
 176 }
 177
 178 if (!defined $action || $action eq "summary") {
 179         git_summary();
 180         exit;
 181 } elsif ($action eq "heads") {
 182         git_heads();
 183         exit;
 184 } elsif ($action eq "tags") {
 185         git_tags();
 186         exit;
 187 } elsif ($action eq "blob") {
 188         git_blob();
 189         exit;
 190 } elsif ($action eq "blob_plain") {
 191         git_blob_plain();
 192         exit;
 193 } elsif ($action eq "tree") {
 194         git_tree();
 195         exit;
 196 } elsif ($action eq "rss") {
 197         git_rss();
 198         exit;
 199 } elsif ($action eq "commit") {
 200         git_commit();
 201         exit;
 202 } elsif ($action eq "log") {
 203         git_log();
 204         exit;
 205 } elsif ($action eq "blobdiff") {
 206         git_blobdiff();
 207         exit;
 208 } elsif ($action eq "blobdiff_plain") {
 209         git_blobdiff_plain();
 210         exit;
 211 } elsif ($action eq "commitdiff") {
 212         git_commitdiff();
 213         exit;
 214 } elsif ($action eq "commitdiff_plain") {
 215         git_commitdiff_plain();
 216         exit;
 217 } elsif ($action eq "history") {
 218         git_history();
 219         exit;
 220 } elsif ($action eq "search") {
 221         git_search();
 222         exit;
 223 } elsif ($action eq "shortlog") {
 224         git_shortlog();
 225         exit;
 226 } elsif ($action eq "tag") {
 227         git_tag();
 228         exit;
 229 } elsif ($action eq "blame") {
 230         git_blame2();
 231         exit;
 232 } else {
 233         undef $action;
 234         die_error(undef, "Unknown action.");
 235         exit;
 236 }
 237
 238 # quote unsafe chars, but keep the slash, even when it's not
 239 # correct, but quoted slashes look too horrible in bookmarks
 240 sub esc_param {
 241         my $str = shift;
 242         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 243         $str =~ s/\+/%2B/g;
 244         $str =~ s/ /\+/g;
 245         return $str;
 246 }
 247
 248 # replace invalid utf8 character with SUBSTITUTION sequence
 249 sub esc_html {
 250         my $str = shift;
 251         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 252         $str = escapeHTML($str);
 253         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 254         return $str;
 255 }
 256
 257 # git may return quoted and escaped filenames
 258 sub unquote {
 259         my $str = shift;
 260         if ($str =~ m/^"(.*)"$/) {
 261                 $str = $1;
 262                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 263         }
 264         return $str;
 265 }
 266
 267 # CSS class for given age value (in seconds)
 268 sub age_class {
 269         my $age = shift;
 270
 271         if ($age < 60*60*2) {
 272                 return "age0";
 273         } elsif ($age < 60*60*24*2) {
 274                 return "age1";
 275         } else {
 276                 return "age2";
 277         }
 278 }
 279
 280 sub git_header_html {
 281         my $status = shift || "200 OK";
 282         my $expires = shift;
 283
 284         my $title = "$site_name git";
 285         if (defined $project) {
 286                 $title .= " - $project";
 287                 if (defined $action) {
 288                         $title .= "/$action";
 289                         if (defined $file_name) {
 290                                 $title .= " - $file_name";
 291                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 292                                         $title .= "/";
 293                                 }
 294                         }
 295                 }
 296         }
 297         my $content_type;
 298         # require explicit support from the UA if we are to send the page as
 299         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 300         # we have to do this because MSIE sometimes globs '*/*', pretending to
 301         # support xhtml+xml but choking when it gets what it asked for.
 302         if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 303                 $content_type = 'application/xhtml+xml';
 304         } else {
 305                 $content_type = 'text/html';
 306         }
 307         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 308         print <<EOF;
 309 <?xml version="1.0" encoding="utf-8"?>
 310 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 311 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 312 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 313 <!-- git core binaries version $git_version -->
 314 <head>
 315 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 316 <meta name="robots" content="index, nofollow"/>
 317 <title>$title</title>
 318 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 319 $rss_link
 320 </head>
 321 <body>
 322 EOF
 323         print "<div class=\"page_header\">\n" .
 324               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 325               "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 326               "</a>\n";
 327         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 328         if (defined $project) {
 329                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 330                 if (defined $action) {
 331                         print " / $action";
 332                 }
 333                 print "\n";
 334                 if (!defined $searchtext) {
 335                         $searchtext = "";
 336                 }
 337                 my $search_hash;
 338                 if (defined $hash_base) {
 339                         $search_hash = $hash_base;
 340                 } elsif (defined $hash) {
 341                         $search_hash = $hash;
 342                 } else {
 343                         $search_hash = "HEAD";
 344                 }
 345                 $cgi->param("a", "search");
 346                 $cgi->param("h", $search_hash);
 347                 print $cgi->startform(-method => "get", -action => $my_uri) .
 348                       "<div class=\"search\">\n" .
 349                       $cgi->hidden(-name => "p") . "\n" .
 350                       $cgi->hidden(-name => "a") . "\n" .
 351                       $cgi->hidden(-name => "h") . "\n" .
 352                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 353                       "</div>" .
 354                       $cgi->end_form() . "\n";
 355         }
 356         print "</div>\n";
 357 }
 358
 359 sub git_footer_html {
 360         print "<div class=\"page_footer\">\n";
 361         if (defined $project) {
 362                 my $descr = git_read_description($project);
 363                 if (defined $descr) {
 364                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 365                 }
 366                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 367         } else {
 368                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 369         }
 370         print "</div>\n" .
 371               "</body>\n" .
 372               "</html>";
 373 }
 374
 375 sub die_error {
 376         my $status = shift || "403 Forbidden";
 377         my $error = shift || "Malformed query, file missing or permission denied";
 378
 379         git_header_html($status);
 380         print "<div class=\"page_body\">\n" .
 381               "<br/><br/>\n" .
 382               "$status - $error\n" .
 383               "<br/>\n" .
 384               "</div>\n";
 385         git_footer_html();
 386         exit;
 387 }
 388
 389 sub git_page_nav {
 390         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 391         $extra = '' if !defined $extra; # pager or formats
 392
 393         my @navs = qw(summary shortlog log commit commitdiff tree);
 394         if ($suppress) {
 395                 @navs = grep { $_ ne $suppress } @navs;
 396         }
 397
 398         my %arg = map { $_, ''} @navs;
 399         if (defined $head) {
 400                 for (qw(commit commitdiff)) {
 401                         $arg{$_} = ";h=$head";
 402                 }
 403                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
 404                         for (qw(shortlog log)) {
 405                                 $arg{$_} = ";h=$head";
 406                         }
 407                 }
 408         }
 409         $arg{tree} .= ";h=$treehead" if defined $treehead;
 410         $arg{tree} .= ";hb=$treebase" if defined $treebase;
 411
 412         print "<div class=\"page_nav\">\n" .
 413                 (join " | ",
 414                  map { $_ eq $current
 415                                          ? $_
 416                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
 417                                  }
 418                  @navs);
 419         print "<br/>$extra<br/>\n" .
 420               "</div>\n";
 421 }
 422
 423 sub git_get_type {
 424         my $hash = shift;
 425
 426         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 427         my $type = <$fd>;
 428         close $fd or return;
 429         chomp $type;
 430         return $type;
 431 }
 432
 433 sub git_read_head {
 434         my $project = shift;
 435         my $oENV = $ENV{'GIT_DIR'};
 436         my $retval = undef;
 437         $ENV{'GIT_DIR'} = "$projectroot/$project";
 438         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 439                 my $head = <$fd>;
 440                 close $fd;
 441                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 442                         $retval = $1;
 443                 }
 444         }
 445         if (defined $oENV) {
 446                 $ENV{'GIT_DIR'} = $oENV;
 447         }
 448         return $retval;
 449 }
 450
 451 sub git_read_hash {
 452         my $path = shift;
 453
 454         open my $fd, "$projectroot/$path" or return undef;
 455         my $head = <$fd>;
 456         close $fd;
 457         chomp $head;
 458         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 459                 return $head;
 460         }
 461 }
 462
 463 sub git_read_description {
 464         my $path = shift;
 465
 466         open my $fd, "$projectroot/$path/description" or return undef;
 467         my $descr = <$fd>;
 468         close $fd;
 469         chomp $descr;
 470         return $descr;
 471 }
 472
 473 sub git_read_tag {
 474         my $tag_id = shift;
 475         my %tag;
 476         my @comment;
 477
 478         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 479         $tag{'id'} = $tag_id;
 480         while (my $line = <$fd>) {
 481                 chomp $line;
 482                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 483                         $tag{'object'} = $1;
 484                 } elsif ($line =~ m/^type (.+)$/) {
 485                         $tag{'type'} = $1;
 486                 } elsif ($line =~ m/^tag (.+)$/) {
 487                         $tag{'name'} = $1;
 488                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 489                         $tag{'author'} = $1;
 490                         $tag{'epoch'} = $2;
 491                         $tag{'tz'} = $3;
 492                 } elsif ($line =~ m/--BEGIN/) {
 493                         push @comment, $line;
 494                         last;
 495                 } elsif ($line eq "") {
 496                         last;
 497                 }
 498         }
 499         push @comment, <$fd>;
 500         $tag{'comment'} = \@comment;
 501         close $fd or return;
 502         if (!defined $tag{'name'}) {
 503                 return
 504         };
 505         return %tag
 506 }
 507
 508 sub age_string {
 509         my $age = shift;
 510         my $age_str;
 511
 512         if ($age > 60*60*24*365*2) {
 513                 $age_str = (int $age/60/60/24/365);
 514                 $age_str .= " years ago";
 515         } elsif ($age > 60*60*24*(365/12)*2) {
 516                 $age_str = int $age/60/60/24/(365/12);
 517                 $age_str .= " months ago";
 518         } elsif ($age > 60*60*24*7*2) {
 519                 $age_str = int $age/60/60/24/7;
 520                 $age_str .= " weeks ago";
 521         } elsif ($age > 60*60*24*2) {
 522                 $age_str = int $age/60/60/24;
 523                 $age_str .= " days ago";
 524         } elsif ($age > 60*60*2) {
 525                 $age_str = int $age/60/60;
 526                 $age_str .= " hours ago";
 527         } elsif ($age > 60*2) {
 528                 $age_str = int $age/60;
 529                 $age_str .= " min ago";
 530         } elsif ($age > 2) {
 531                 $age_str = int $age;
 532                 $age_str .= " sec ago";
 533         } else {
 534                 $age_str .= " right now";
 535         }
 536         return $age_str;
 537 }
 538
 539 sub git_read_commit {
 540         my $commit_id = shift;
 541         my $commit_text = shift;
 542
 543         my @commit_lines;
 544         my %co;
 545
 546         if (defined $commit_text) {
 547                 @commit_lines = @$commit_text;
 548         } else {
 549                 $/ = "\0";
 550                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 551                 @commit_lines = split '\n', <$fd>;
 552                 close $fd or return;
 553                 $/ = "\n";
 554                 pop @commit_lines;
 555         }
 556         my $header = shift @commit_lines;
 557         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 558                 return;
 559         }
 560         ($co{'id'}, my @parents) = split ' ', $header;
 561         $co{'parents'} = \@parents;
 562         $co{'parent'} = $parents[0];
 563         while (my $line = shift @commit_lines) {
 564                 last if $line eq "\n";
 565                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 566                         $co{'tree'} = $1;
 567                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 568                         $co{'author'} = $1;
 569                         $co{'author_epoch'} = $2;
 570                         $co{'author_tz'} = $3;
 571                         if ($co{'author'} =~ m/^([^<]+) </) {
 572                                 $co{'author_name'} = $1;
 573                         } else {
 574                                 $co{'author_name'} = $co{'author'};
 575                         }
 576                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 577                         $co{'committer'} = $1;
 578                         $co{'committer_epoch'} = $2;
 579                         $co{'committer_tz'} = $3;
 580                         $co{'committer_name'} = $co{'committer'};
 581                         $co{'committer_name'} =~ s/ <.*//;
 582                 }
 583         }
 584         if (!defined $co{'tree'}) {
 585                 return;
 586         };
 587
 588         foreach my $title (@commit_lines) {
 589                 $title =~ s/^    //;
 590                 if ($title ne "") {
 591                         $co{'title'} = chop_str($title, 80, 5);
 592                         # remove leading stuff of merges to make the interesting part visible
 593                         if (length($title) > 50) {
 594                                 $title =~ s/^Automatic //;
 595                                 $title =~ s/^merge (of|with) /Merge ... /i;
 596                                 if (length($title) > 50) {
 597                                         $title =~ s/(http|rsync):\/\///;
 598                                 }
 599                                 if (length($title) > 50) {
 600                                         $title =~ s/(master|www|rsync)\.//;
 601                                 }
 602                                 if (length($title) > 50) {
 603                                         $title =~ s/kernel.org:?//;
 604                                 }
 605                                 if (length($title) > 50) {
 606                                         $title =~ s/\/pub\/scm//;
 607                                 }
 608                         }
 609                         $co{'title_short'} = chop_str($title, 50, 5);
 610                         last;
 611                 }
 612         }
 613         # remove added spaces
 614         foreach my $line (@commit_lines) {
 615                 $line =~ s/^    //;
 616         }
 617         $co{'comment'} = \@commit_lines;
 618
 619         my $age = time - $co{'committer_epoch'};
 620         $co{'age'} = $age;
 621         $co{'age_string'} = age_string($age);
 622         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 623         if ($age > 60*60*24*7*2) {
 624                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 625                 $co{'age_string_age'} = $co{'age_string'};
 626         } else {
 627                 $co{'age_string_date'} = $co{'age_string'};
 628                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 629         }
 630         return %co;
 631 }
 632
 633 sub git_diff_print {
 634         my $from = shift;
 635         my $from_name = shift;
 636         my $to = shift;
 637         my $to_name = shift;
 638         my $format = shift || "html";
 639
 640         my $from_tmp = "/dev/null";
 641         my $to_tmp = "/dev/null";
 642         my $pid = $$;
 643
 644         # create tmp from-file
 645         if (defined $from) {
 646                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
 647                 open my $fd2, "> $from_tmp";
 648                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
 649                 my @file = <$fd>;
 650                 print $fd2 @file;
 651                 close $fd2;
 652                 close $fd;
 653         }
 654
 655         # create tmp to-file
 656         if (defined $to) {
 657                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
 658                 open my $fd2, "> $to_tmp";
 659                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
 660                 my @file = <$fd>;
 661                 print $fd2 @file;
 662                 close $fd2;
 663                 close $fd;
 664         }
 665
 666         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
 667         if ($format eq "plain") {
 668                 undef $/;
 669                 print <$fd>;
 670                 $/ = "\n";
 671         } else {
 672                 while (my $line = <$fd>) {
 673                         chomp $line;
 674                         my $char = substr($line, 0, 1);
 675                         my $diff_class = "";
 676                         if ($char eq '+') {
 677                                 $diff_class = " add";
 678                         } elsif ($char eq "-") {
 679                                 $diff_class = " rem";
 680                         } elsif ($char eq "@") {
 681                                 $diff_class = " chunk_header";
 682                         } elsif ($char eq "\\") {
 683                                 # skip errors
 684                                 next;
 685                         }
 686                         while ((my $pos = index($line, "\t")) != -1) {
 687                                 if (my $count = (8 - (($pos-1) % 8))) {
 688                                         my $spaces = ' ' x $count;
 689                                         $line =~ s/\t/$spaces/;
 690                                 }
 691                         }
 692                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 693                 }
 694         }
 695         close $fd;
 696
 697         if (defined $from) {
 698                 unlink($from_tmp);
 699         }
 700         if (defined $to) {
 701                 unlink($to_tmp);
 702         }
 703 }
 704
 705 sub mode_str {
 706         my $mode = oct shift;
 707
 708         if (S_ISDIR($mode & S_IFMT)) {
 709                 return 'drwxr-xr-x';
 710         } elsif (S_ISLNK($mode)) {
 711                 return 'lrwxrwxrwx';
 712         } elsif (S_ISREG($mode)) {
 713                 # git cares only about the executable bit
 714                 if ($mode & S_IXUSR) {
 715                         return '-rwxr-xr-x';
 716                 } else {
 717                         return '-rw-r--r--';
 718                 };
 719         } else {
 720                 return '----------';
 721         }
 722 }
 723
 724 sub chop_str {
 725         my $str = shift;
 726         my $len = shift;
 727         my $add_len = shift || 10;
 728
 729         # allow only $len chars, but don't cut a word if it would fit in $add_len
 730         # if it doesn't fit, cut it if it's still longer than the dots we would add
 731         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 732         my $body = $1;
 733         my $tail = $2;
 734         if (length($tail) > 4) {
 735                 $tail = " ...";
 736         }
 737         return "$body$tail";
 738 }
 739
 740 sub file_type {
 741         my $mode = oct shift;
 742
 743         if (S_ISDIR($mode & S_IFMT)) {
 744                 return "directory";
 745         } elsif (S_ISLNK($mode)) {
 746                 return "symlink";
 747         } elsif (S_ISREG($mode)) {
 748                 return "file";
 749         } else {
 750                 return "unknown";
 751         }
 752 }
 753
 754 sub format_log_line_html {
 755         my $line = shift;
 756
 757         $line = esc_html($line);
 758         $line =~ s/ /&nbsp;/g;
 759         if ($line =~ m/([0-9a-fA-F]{40})/) {
 760                 my $hash_text = $1;
 761                 if (git_get_type($hash_text) eq "commit") {
 762                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 763                         $line =~ s/$hash_text/$link/;
 764                 }
 765         }
 766         return $line;
 767 }
 768
 769 sub date_str {
 770         my $epoch = shift;
 771         my $tz = shift || "-0000";
 772
 773         my %date;
 774         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 775         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 776         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 777         $date{'hour'} = $hour;
 778         $date{'minute'} = $min;
 779         $date{'mday'} = $mday;
 780         $date{'day'} = $days[$wday];
 781         $date{'month'} = $months[$mon];
 782         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 783         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 784
 785         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 786         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 787         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 788         $date{'hour_local'} = $hour;
 789         $date{'minute_local'} = $min;
 790         $date{'tz_local'} = $tz;
 791         return %date;
 792 }
 793
 794 # git-logo (cached in browser for one day)
 795 sub git_logo {
 796         binmode STDOUT, ':raw';
 797         print $cgi->header(-type => 'image/png', -expires => '+1d');
 798         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
 799         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
 800                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
 801                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
 802                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
 803                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
 804                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
 805                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
 806                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
 807                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
 808                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
 809                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
 810                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
 811                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
 812 }
 813
 814 sub get_file_owner {
 815         my $path = shift;
 816
 817         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 818         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 819         if (!defined $gcos) {
 820                 return undef;
 821         }
 822         my $owner = $gcos;
 823         $owner =~ s/[,;].*$//;
 824         return decode("utf8", $owner, Encode::FB_DEFAULT);
 825 }
 826
 827 sub git_read_projects {
 828         my @list;
 829
 830         if (-d $projects_list) {
 831                 # search in directory
 832                 my $dir = $projects_list;
 833                 opendir my ($dh), $dir or return undef;
 834                 while (my $dir = readdir($dh)) {
 835                         if (-e "$projectroot/$dir/HEAD") {
 836                                 my $pr = {
 837                                         path => $dir,
 838                                 };
 839                                 push @list, $pr
 840                         }
 841                 }
 842                 closedir($dh);
 843         } elsif (-f $projects_list) {
 844                 # read from file(url-encoded):
 845                 # 'git%2Fgit.git Linus+Torvalds'
 846                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 847                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 848                 open my ($fd), $projects_list or return undef;
 849                 while (my $line = <$fd>) {
 850                         chomp $line;
 851                         my ($path, $owner) = split ' ', $line;
 852                         $path = unescape($path);
 853                         $owner = unescape($owner);
 854                         if (!defined $path) {
 855                                 next;
 856                         }
 857                         if (-e "$projectroot/$path/HEAD") {
 858                                 my $pr = {
 859                                         path => $path,
 860                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 861                                 };
 862                                 push @list, $pr
 863                         }
 864                 }
 865                 close $fd;
 866         }
 867         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 868         return @list;
 869 }
 870
 871 sub git_get_project_config {
 872         my $key = shift;
 873
 874         return unless ($key);
 875         $key =~ s/^gitweb\.//;
 876         return if ($key =~ m/\W/);
 877
 878         my $val = qx($GIT repo-config --get gitweb.$key);
 879         return ($val);
 880 }
 881
 882 sub git_get_project_config_bool {
 883         my $val = git_get_project_config (@_);
 884         if ($val and $val =~ m/true|yes|on/) {
 885                 return (1);
 886         }
 887         return; # implicit false
 888 }
 889
 890 sub git_project_list {
 891         my @list = git_read_projects();
 892         my @projects;
 893         if (!@list) {
 894                 die_error(undef, "No project found.");
 895         }
 896         foreach my $pr (@list) {
 897                 my $head = git_read_head($pr->{'path'});
 898                 if (!defined $head) {
 899                         next;
 900                 }
 901                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
 902                 my %co = git_read_commit($head);
 903                 if (!%co) {
 904                         next;
 905                 }
 906                 $pr->{'commit'} = \%co;
 907                 if (!defined $pr->{'descr'}) {
 908                         my $descr = git_read_description($pr->{'path'}) || "";
 909                         $pr->{'descr'} = chop_str($descr, 25, 5);
 910                 }
 911                 if (!defined $pr->{'owner'}) {
 912                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
 913                 }
 914                 push @projects, $pr;
 915         }
 916         git_header_html();
 917         if (-f $home_text) {
 918                 print "<div class=\"index_include\">\n";
 919                 open (my $fd, $home_text);
 920                 print <$fd>;
 921                 close $fd;
 922                 print "</div>\n";
 923         }
 924         print "<table class=\"project_list\">\n" .
 925               "<tr>\n";
 926         if (!defined($order) || (defined($order) && ($order eq "project"))) {
 927                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
 928                 print "<th>Project</th>\n";
 929         } else {
 930                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=project")}, "Project") . "</th>\n";
 931         }
 932         if (defined($order) && ($order eq "descr")) {
 933                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
 934                 print "<th>Description</th>\n";
 935         } else {
 936                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=descr")}, "Description") . "</th>\n";
 937         }
 938         if (defined($order) && ($order eq "owner")) {
 939                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
 940                 print "<th>Owner</th>\n";
 941         } else {
 942                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=owner")}, "Owner") . "</th>\n";
 943         }
 944         if (defined($order) && ($order eq "age")) {
 945                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
 946                 print "<th>Last Change</th>\n";
 947         } else {
 948                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=age")}, "Last Change") . "</th>\n";
 949         }
 950         print "<th></th>\n" .
 951               "</tr>\n";
 952         my $alternate = 0;
 953         foreach my $pr (@projects) {
 954                 if ($alternate) {
 955                         print "<tr class=\"dark\">\n";
 956                 } else {
 957                         print "<tr class=\"light\">\n";
 958                 }
 959                 $alternate ^= 1;
 960                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
 961                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
 962                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
 963                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" . $pr->{'commit'}{'age_string'} . "</td>\n" .
 964                       "<td class=\"link\">" .
 965                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary") .
 966                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") .
 967                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
 968                       "</td>\n" .
 969                       "</tr>\n";
 970         }
 971         print "</table>\n";
 972         git_footer_html();
 973 }
 974
 975 sub read_info_ref {
 976         my $type = shift || "";
 977         my %refs;
 978         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 979         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 980         open my $fd, "$projectroot/$project/info/refs" or return;
 981         while (my $line = <$fd>) {
 982                 chomp $line;
 983                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 984                         if (defined $refs{$1}) {
 985                                 $refs{$1} .= " / $2";
 986                         } else {
 987                                 $refs{$1} = $2;
 988                         }
 989                 }
 990         }
 991         close $fd or return;
 992         return \%refs;
 993 }
 994
 995 sub git_read_refs {
 996         my $ref_dir = shift;
 997         my @reflist;
 998
 999         my @refs;
1000         opendir my $dh, "$projectroot/$project/$ref_dir";
1001         while (my $dir = readdir($dh)) {
1002                 if ($dir =~ m/^\./) {
1003                         next;
1004                 }
1005                 if (-d "$projectroot/$project/$ref_dir/$dir") {
1006                         opendir my $dh2, "$projectroot/$project/$ref_dir/$dir";
1007                         my @subdirs = grep !m/^\./, readdir $dh2;
1008                         closedir($dh2);
1009                         foreach my $subdir (@subdirs) {
1010                                 push @refs, "$dir/$subdir"
1011                         }
1012                         next;
1013                 }
1014                 push @refs, $dir;
1015         }
1016         closedir($dh);
1017         foreach my $ref_file (@refs) {
1018                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
1019                 my $type = git_get_type($ref_id) || next;
1020                 my %ref_item;
1021                 my %co;
1022                 $ref_item{'type'} = $type;
1023                 $ref_item{'id'} = $ref_id;
1024                 $ref_item{'epoch'} = 0;
1025                 $ref_item{'age'} = "unknown";
1026                 if ($type eq "tag") {
1027                         my %tag = git_read_tag($ref_id);
1028                         $ref_item{'comment'} = $tag{'comment'};
1029                         if ($tag{'type'} eq "commit") {
1030                                 %co = git_read_commit($tag{'object'});
1031                                 $ref_item{'epoch'} = $co{'committer_epoch'};
1032                                 $ref_item{'age'} = $co{'age_string'};
1033                         } elsif (defined($tag{'epoch'})) {
1034                                 my $age = time - $tag{'epoch'};
1035                                 $ref_item{'epoch'} = $tag{'epoch'};
1036                                 $ref_item{'age'} = age_string($age);
1037                         }
1038                         $ref_item{'reftype'} = $tag{'type'};
1039                         $ref_item{'name'} = $tag{'name'};
1040                         $ref_item{'refid'} = $tag{'object'};
1041                 } elsif ($type eq "commit"){
1042                         %co = git_read_commit($ref_id);
1043                         $ref_item{'reftype'} = "commit";
1044                         $ref_item{'name'} = $ref_file;
1045                         $ref_item{'title'} = $co{'title'};
1046                         $ref_item{'refid'} = $ref_id;
1047                         $ref_item{'epoch'} = $co{'committer_epoch'};
1048                         $ref_item{'age'} = $co{'age_string'};
1049                 }
1050
1051                 push @reflist, \%ref_item;
1052         }
1053         # sort tags by age
1054         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1055         return \@reflist;
1056 }
1057
1058 sub git_summary {
1059         my $descr = git_read_description($project) || "none";
1060         my $head = git_read_head($project);
1061         my %co = git_read_commit($head);
1062         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1063
1064         my $owner;
1065         if (-f $projects_list) {
1066                 open (my $fd , $projects_list);
1067                 while (my $line = <$fd>) {
1068                         chomp $line;
1069                         my ($pr, $ow) = split ' ', $line;
1070                         $pr = unescape($pr);
1071                         $ow = unescape($ow);
1072                         if ($pr eq $project) {
1073                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1074                                 last;
1075                         }
1076                 }
1077                 close $fd;
1078         }
1079         if (!defined $owner) {
1080                 $owner = get_file_owner("$projectroot/$project");
1081         }
1082
1083         my $refs = read_info_ref();
1084         git_header_html();
1085         git_page_nav('summary','', $head);
1086         print "<div class=\"title\">&nbsp;</div>\n";
1087         print "<table cellspacing=\"0\">\n" .
1088               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1089               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1090               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1091               "</table>\n";
1092         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1093                 or die_error(undef, "Open git-rev-list failed.");
1094         my @revlist = map { chomp; $_ } <$fd>;
1095         close $fd;
1096         print "<div>\n" .
1097               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog"), -class => "title"}, "shortlog") .
1098               "</div>\n";
1099         my $i = 16;
1100         print "<table cellspacing=\"0\">\n";
1101         my $alternate = 0;
1102         foreach my $commit (@revlist) {
1103                 my %co = git_read_commit($commit);
1104                 my %ad = date_str($co{'author_epoch'});
1105                 if ($alternate) {
1106                         print "<tr class=\"dark\">\n";
1107                 } else {
1108                         print "<tr class=\"light\">\n";
1109                 }
1110                 $alternate ^= 1;
1111                 if ($i-- > 0) {
1112                         my $ref = "";
1113                         if (defined $refs->{$commit}) {
1114                                 $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
1115                         }
1116                         print "<td><i>$co{'age_string'}</i></td>\n" .
1117                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1118                               "<td>";
1119                         if (length($co{'title_short'}) < length($co{'title'})) {
1120                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
1121                                       "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1122                         } else {
1123                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"},
1124                                       "<b>" . esc_html($co{'title'}) . "$ref</b>");
1125                         }
1126                         print "</td>\n" .
1127                               "<td class=\"link\">" .
1128                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1129                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1130                               "</td>\n" .
1131                               "</tr>";
1132                 } else {
1133                         print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "...") . "</td>\n" .
1134                         "</tr>";
1135                         last;
1136                 }
1137         }
1138         print "</table\n>";
1139
1140         my $taglist = git_read_refs("refs/tags");
1141         if (defined @$taglist) {
1142                 print "<div>\n" .
1143                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags"), -class => "title"}, "tags") .
1144                       "</div>\n";
1145                 my $i = 16;
1146                 print "<table cellspacing=\"0\">\n";
1147                 my $alternate = 0;
1148                 foreach my $entry (@$taglist) {
1149                         my %tag = %$entry;
1150                         my $comment_lines = $tag{'comment'};
1151                         my $comment = shift @$comment_lines;
1152                         if (defined($comment)) {
1153                                 $comment = chop_str($comment, 30, 5);
1154                         }
1155                         if ($alternate) {
1156                                 print "<tr class=\"dark\">\n";
1157                         } else {
1158                                 print "<tr class=\"light\">\n";
1159                         }
1160                         $alternate ^= 1;
1161                         if ($i-- > 0) {
1162                                 print "<td><i>$tag{'age'}</i></td>\n" .
1163                                       "<td>" .
1164                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
1165                                       "<b>" . esc_html($tag{'name'}) . "</b>") .
1166                                       "</td>\n" .
1167                                       "<td>";
1168                                 if (defined($comment)) {
1169                                         print $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, esc_html($comment));
1170                                 }
1171                                 print "</td>\n" .
1172                                       "<td class=\"link\">";
1173                                 if ($tag{'type'} eq "tag") {
1174                                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
1175                                 }
1176                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1177                                 if ($tag{'reftype'} eq "commit") {
1178                                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1179                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1180                                 }
1181                                 print "</td>\n" .
1182                                       "</tr>";
1183                         } else {
1184                                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "...") . "</td>\n" .
1185                                 "</tr>";
1186                                 last;
1187                         }
1188                 }
1189                 print "</table\n>";
1190         }
1191
1192         my $headlist = git_read_refs("refs/heads");
1193         if (defined @$headlist) {
1194                 print "<div>\n" .
1195                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads"), -class => "title"}, "heads") .
1196                       "</div>\n";
1197                 my $i = 16;
1198                 print "<table cellspacing=\"0\">\n";
1199                 my $alternate = 0;
1200                 foreach my $entry (@$headlist) {
1201                         my %tag = %$entry;
1202                         if ($alternate) {
1203                                 print "<tr class=\"dark\">\n";
1204                         } else {
1205                                 print "<tr class=\"light\">\n";
1206                         }
1207                         $alternate ^= 1;
1208                         if ($i-- > 0) {
1209                                 print "<td><i>$tag{'age'}</i></td>\n" .
1210                                       "<td>" .
1211                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"},
1212                                       "<b>" . esc_html($tag{'name'}) . "</b>") .
1213                                       "</td>\n" .
1214                                       "<td class=\"link\">" .
1215                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1216                                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1217                                       "</td>\n" .
1218                                       "</tr>";
1219                         } else {
1220                                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "...") . "</td>\n" .
1221                                 "</tr>";
1222                                 last;
1223                         }
1224                 }
1225                 print "</table\n>";
1226         }
1227         git_footer_html();
1228 }
1229
1230 sub git_print_page_path {
1231         my $name = shift;
1232         my $type = shift;
1233
1234         if (!defined $name) {
1235                 print "<div class=\"page_path\"><b>/</b></div>\n";
1236         } elsif ($type =~ "blob") {
1237                 print "<div class=\"page_path\"><b>" .
1238                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1239         } else {
1240                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1241         }
1242 }
1243
1244 sub git_tag {
1245         my $head = git_read_head($project);
1246         git_header_html();
1247         git_page_nav('','', $head,undef,$head);
1248         my %tag = git_read_tag($hash);
1249         print "<div>\n" .
1250               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($tag{'name'})) . "\n" .
1251               "</div>\n";
1252         print "<div class=\"title_text\">\n" .
1253               "<table cellspacing=\"0\">\n" .
1254               "<tr>\n" .
1255               "<td>object</td>\n" .
1256               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1257               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1258               "</tr>\n";
1259         if (defined($tag{'author'})) {
1260                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1261                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1262                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1263         }
1264         print "</table>\n\n" .
1265               "</div>\n";
1266         print "<div class=\"page_body\">";
1267         my $comment = $tag{'comment'};
1268         foreach my $line (@$comment) {
1269                 print esc_html($line) . "<br/>\n";
1270         }
1271         print "</div>\n";
1272         git_footer_html();
1273 }
1274
1275 sub git_blame2 {
1276         my $fd;
1277         my $ftype;
1278         die_error(undef, "Permission denied.") if (!git_get_project_config_bool ('blame'));
1279         die_error('404 Not Found', "File name not defined") if (!$file_name);
1280         $hash_base ||= git_read_head($project);
1281         die_error(undef, "Reading commit failed") unless ($hash_base);
1282         my %co = git_read_commit($hash_base)
1283                 or die_error(undef, "Reading commit failed");
1284         if (!defined $hash) {
1285                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1286                         or die_error(undef, "Error looking up file");
1287         }
1288         $ftype = git_get_type($hash);
1289         if ($ftype !~ "blob") {
1290                 die_error("400 Bad Request", "object is not a blob");
1291         }
1292         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1293                 or die_error(undef, "Open git-blame failed.");
1294         git_header_html();
1295         my $formats_nav =
1296                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1297                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1298         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1299         print "<div>" .
1300               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
1301               "</div>\n";
1302         git_print_page_path($file_name, $ftype);
1303         my @rev_color = (qw(light dark));
1304         my $num_colors = scalar(@rev_color);
1305         my $current_color = 0;
1306         my $last_rev;
1307         print "<div class=\"page_body\">\n";
1308         print "<table class=\"blame\">\n";
1309         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1310         while (<$fd>) {
1311                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1312                 my $full_rev = $1;
1313                 my $rev = substr($full_rev, 0, 8);
1314                 my $lineno = $2;
1315                 my $data = $3;
1316
1317                 if (!defined $last_rev) {
1318                         $last_rev = $full_rev;
1319                 } elsif ($last_rev ne $full_rev) {
1320                         $last_rev = $full_rev;
1321                         $current_color = ++$current_color % $num_colors;
1322                 }
1323                 print "<tr class=\"$rev_color[$current_color]\">\n";
1324                 print "<td class=\"sha1\">" .
1325                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1326                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1327                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1328                 print "</tr>\n";
1329         }
1330         print "</table>\n";
1331         print "</div>";
1332         close $fd or print "Reading blob failed\n";
1333         git_footer_html();
1334 }
1335
1336 sub git_blame {
1337         my $fd;
1338         die_error('403 Permission denied', "Permission denied.") if (!git_get_project_config_bool ('blame'));
1339         die_error('404 Not Found', "What file will it be, master?") if (!$file_name);
1340         $hash_base ||= git_read_head($project);
1341         die_error(undef, "Reading commit failed.") unless ($hash_base);
1342         my %co = git_read_commit($hash_base)
1343                 or die_error(undef, "Reading commit failed.");
1344         if (!defined $hash) {
1345                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1346                         or die_error(undef, "Error lookup file.");
1347         }
1348         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1349                 or die_error(undef, "Open git-annotate failed.");
1350         git_header_html();
1351         my $formats_nav =
1352                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1353                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1354         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1355         print "<div>" .
1356               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
1357               "</div>\n";
1358         git_print_page_path($file_name);
1359         print "<div class=\"page_body\">\n";
1360         print <<HTML;
1361 <table class="blame">
1362   <tr>
1363     <th>Commit</th>
1364     <th>Age</th>
1365     <th>Author</th>
1366     <th>Line</th>
1367     <th>Data</th>
1368   </tr>
1369 HTML
1370         my @line_class = (qw(light dark));
1371         my $line_class_len = scalar (@line_class);
1372         my $line_class_num = $#line_class;
1373         while (my $line = <$fd>) {
1374                 my $long_rev;
1375                 my $short_rev;
1376                 my $author;
1377                 my $time;
1378                 my $lineno;
1379                 my $data;
1380                 my $age;
1381                 my $age_str;
1382                 my $age_class;
1383
1384                 chomp $line;
1385                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1386
1387                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1388                         $long_rev = $1;
1389                         $author   = $2;
1390                         $time     = $3;
1391                         $lineno   = $4;
1392                         $data     = $5;
1393                 } else {
1394                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1395                         next;
1396                 }
1397                 $short_rev  = substr ($long_rev, 0, 8);
1398                 $age        = time () - $time;
1399                 $age_str    = age_string ($age);
1400                 $age_str    =~ s/ /&nbsp;/g;
1401                 $age_class  = age_class($age);
1402                 $author     = esc_html ($author);
1403                 $author     =~ s/ /&nbsp;/g;
1404                 # escape tabs
1405                 while ((my $pos = index($data, "\t")) != -1) {
1406                         if (my $count = (8 - ($pos % 8))) {
1407                                 my $spaces = ' ' x $count;
1408                                 $data =~ s/\t/$spaces/;
1409                         }
1410                 }
1411                 $data = esc_html ($data);
1412
1413                 print <<HTML;
1414   <tr class="$line_class[$line_class_num]">
1415     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1416     <td class="$age_class">$age_str</td>
1417     <td>$author</td>
1418     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1419     <td class="pre">$data</td>
1420   </tr>
1421 HTML
1422         } # while (my $line = <$fd>)
1423         print "</table>\n\n";
1424         close $fd or print "Reading blob failed.\n";
1425         print "</div>";
1426         git_footer_html();
1427 }
1428
1429 sub git_tags {
1430         my $head = git_read_head($project);
1431         git_header_html();
1432         git_page_nav('','', $head,undef,$head);
1433         my $taglist = git_read_refs("refs/tags");
1434         print "<div>\n" .
1435               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
1436               "</div>\n";
1437         print "<table cellspacing=\"0\">\n";
1438         my $alternate = 0;
1439         if (defined @$taglist) {
1440                 foreach my $entry (@$taglist) {
1441                         my %tag = %$entry;
1442                         my $comment_lines = $tag{'comment'};
1443                         my $comment = shift @$comment_lines;
1444                         if (defined($comment)) {
1445                                 $comment = chop_str($comment, 30, 5);
1446                         }
1447                         if ($alternate) {
1448                                 print "<tr class=\"dark\">\n";
1449                         } else {
1450                                 print "<tr class=\"light\">\n";
1451                         }
1452                         $alternate ^= 1;
1453                         print "<td><i>$tag{'age'}</i></td>\n" .
1454                               "<td>" .
1455                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
1456                               "<b>" . esc_html($tag{'name'}) . "</b>") .
1457                               "</td>\n" .
1458                               "<td>";
1459                         if (defined($comment)) {
1460                                 print $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, $comment);
1461                         }
1462                         print "</td>\n" .
1463                               "<td class=\"link\">";
1464                         if ($tag{'type'} eq "tag") {
1465                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
1466                         }
1467                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1468                         if ($tag{'reftype'} eq "commit") {
1469                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1470                                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1471                         }
1472                         print "</td>\n" .
1473                               "</tr>";
1474                 }
1475         }
1476         print "</table\n>";
1477         git_footer_html();
1478 }
1479
1480 sub git_heads {
1481         my $head = git_read_head($project);
1482         git_header_html();
1483         git_page_nav('','', $head,undef,$head);
1484         my $taglist = git_read_refs("refs/heads");
1485         print "<div>\n" .
1486               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
1487               "</div>\n";
1488         print "<table cellspacing=\"0\">\n";
1489         my $alternate = 0;
1490         if (defined @$taglist) {
1491                 foreach my $entry (@$taglist) {
1492                         my %tag = %$entry;
1493                         if ($alternate) {
1494                                 print "<tr class=\"dark\">\n";
1495                         } else {
1496                                 print "<tr class=\"light\">\n";
1497                         }
1498                         $alternate ^= 1;
1499                         print "<td><i>$tag{'age'}</i></td>\n" .
1500                               "<td>" .
1501                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1502                               "</td>\n" .
1503                               "<td class=\"link\">" .
1504                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1505                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1506                               "</td>\n" .
1507                               "</tr>";
1508                 }
1509         }
1510         print "</table\n>";
1511         git_footer_html();
1512 }
1513
1514 sub git_get_hash_by_path {
1515         my $base = shift;
1516         my $path = shift || return undef;
1517
1518         my $tree = $base;
1519
1520         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
1521                 or die_error(undef, "Open git-ls-tree failed.");
1522         my $line = <$fd>;
1523         close $fd or return undef;
1524
1525         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1526         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1527         return $3;
1528 }
1529
1530 sub mimetype_guess_file {
1531         my $filename = shift;
1532         my $mimemap = shift;
1533         -r $mimemap or return undef;
1534
1535         my %mimemap;
1536         open(MIME, $mimemap) or return undef;
1537         while (<MIME>) {
1538                 my ($mime, $exts) = split(/\t+/);
1539                 my @exts = split(/\s+/, $exts);
1540                 foreach my $ext (@exts) {
1541                         $mimemap{$ext} = $mime;
1542                 }
1543         }
1544         close(MIME);
1545
1546         $filename =~ /\.(.*?)$/;
1547         return $mimemap{$1};
1548 }
1549
1550 sub mimetype_guess {
1551         my $filename = shift;
1552         my $mime;
1553         $filename =~ /\./ or return undef;
1554
1555         if ($mimetypes_file) {
1556                 my $file = $mimetypes_file;
1557                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
1558                 $mime = mimetype_guess_file($filename, $file);
1559         }
1560         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1561         return $mime;
1562 }
1563
1564 sub git_blob_plain_mimetype {
1565         my $fd = shift;
1566         my $filename = shift;
1567
1568         if ($filename) {
1569                 my $mime = mimetype_guess($filename);
1570                 $mime and return $mime;
1571         }
1572
1573         # just in case
1574         return $default_blob_plain_mimetype unless $fd;
1575
1576         if (-T $fd) {
1577                 return 'text/plain' .
1578                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1579         } elsif (! $filename) {
1580                 return 'application/octet-stream';
1581         } elsif ($filename =~ m/\.png$/i) {
1582                 return 'image/png';
1583         } elsif ($filename =~ m/\.gif$/i) {
1584                 return 'image/gif';
1585         } elsif ($filename =~ m/\.jpe?g$/i) {
1586                 return 'image/jpeg';
1587         } else {
1588                 return 'application/octet-stream';
1589         }
1590 }
1591
1592 sub git_blob_plain {
1593         if (!defined $hash) {
1594                 if (defined $file_name) {
1595                         my $base = $hash_base || git_read_head($project);
1596                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1597                                 or die_error(undef, "Error lookup file.");
1598                 } else {
1599                         die_error(undef, "No file name defined.");
1600                 }
1601         }
1602         my $type = shift;
1603         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1604                 or die_error("Couldn't cat $file_name, $hash");
1605
1606         $type ||= git_blob_plain_mimetype($fd, $file_name);
1607
1608         # save as filename, even when no $file_name is given
1609         my $save_as = "$hash";
1610         if (defined $file_name) {
1611                 $save_as = $file_name;
1612         } elsif ($type =~ m/^text\//) {
1613                 $save_as .= '.txt';
1614         }
1615
1616         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1617         undef $/;
1618         binmode STDOUT, ':raw';
1619         print <$fd>;
1620         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1621         $/ = "\n";
1622         close $fd;
1623 }
1624
1625 sub git_blob {
1626         if (!defined $hash) {
1627                 if (defined $file_name) {
1628                         my $base = $hash_base || git_read_head($project);
1629                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1630                                 or die_error(undef, "Error lookup file.");
1631                 } else {
1632                         die_error(undef, "No file name defined.");
1633                 }
1634         }
1635         my $have_blame = git_get_project_config_bool ('blame');
1636         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1637                 or die_error(undef, "Couldn't cat $file_name, $hash.");
1638         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1639         if ($mimetype !~ m/^text\//) {
1640                 close $fd;
1641                 return git_blob_plain($mimetype);
1642         }
1643         git_header_html();
1644         my $formats_nav = '';
1645         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1646                 if (defined $file_name) {
1647                         if ($have_blame) {
1648                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1649                         }
1650                         $formats_nav .=
1651                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1652                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1653                 } else {
1654                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1655                 }
1656                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1657                 print "<div>" .
1658                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
1659                       "</div>\n";
1660         } else {
1661                 print "<div class=\"page_nav\">\n" .
1662                       "<br/><br/></div>\n" .
1663                       "<div class=\"title\">$hash</div>\n";
1664         }
1665         git_print_page_path($file_name, "blob");
1666         print "<div class=\"page_body\">\n";
1667         my $nr;
1668         while (my $line = <$fd>) {
1669                 chomp $line;
1670                 $nr++;
1671                 while ((my $pos = index($line, "\t")) != -1) {
1672                         if (my $count = (8 - ($pos % 8))) {
1673                                 my $spaces = ' ' x $count;
1674                                 $line =~ s/\t/$spaces/;
1675                         }
1676                 }
1677                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1678         }
1679         close $fd or print "Reading blob failed.\n";
1680         print "</div>";
1681         git_footer_html();
1682 }
1683
1684 sub git_tree {
1685         if (!defined $hash) {
1686                 $hash = git_read_head($project);
1687                 if (defined $file_name) {
1688                         my $base = $hash_base || $hash;
1689                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1690                 }
1691                 if (!defined $hash_base) {
1692                         $hash_base = $hash;
1693                 }
1694         }
1695         $/ = "\0";
1696         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1697                 or die_error(undef, "Open git-ls-tree failed.");
1698         my @entries = map { chomp; $_ } <$fd>;
1699         close $fd or die_error(undef, "Reading tree failed.");
1700         $/ = "\n";
1701
1702         my $refs = read_info_ref();
1703         my $ref = "";
1704         if (defined $refs->{$hash_base}) {
1705                 $ref = " <span class=\"tag\">" . esc_html($refs->{$hash_base}) . "</span>";
1706         }
1707         git_header_html();
1708         my $base_key = "";
1709         my $base = "";
1710         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1711                 $base_key = ";hb=$hash_base";
1712                 git_page_nav('tree','', $hash_base);
1713                 print "<div>\n" .
1714                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
1715                       "</div>\n";
1716         } else {
1717                 print "<div class=\"page_nav\">\n";
1718                 print "<br/><br/></div>\n";
1719                 print "<div class=\"title\">$hash</div>\n";
1720         }
1721         if (defined $file_name) {
1722                 $base = esc_html("$file_name/");
1723         }
1724         git_print_page_path($file_name);
1725         print "<div class=\"page_body\">\n";
1726         print "<table cellspacing=\"0\">\n";
1727         my $alternate = 0;
1728         foreach my $line (@entries) {
1729                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1730                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1731                 my $t_mode = $1;
1732                 my $t_type = $2;
1733                 my $t_hash = $3;
1734                 my $t_name = validate_input($4);
1735                 if ($alternate) {
1736                         print "<tr class=\"dark\">\n";
1737                 } else {
1738                         print "<tr class=\"light\">\n";
1739                 }
1740                 $alternate ^= 1;
1741                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1742                 if ($t_type eq "blob") {
1743                         print "<td class=\"list\">" .
1744                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1745                               "</td>\n" .
1746                               "<td class=\"link\">" .
1747                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
1748 #                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
1749                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1750                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1751                               "</td>\n";
1752                 } elsif ($t_type eq "tree") {
1753                         print "<td class=\"list\">" .
1754                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1755                               "</td>\n" .
1756                               "<td class=\"link\">" .
1757                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1758                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1759                               "</td>\n";
1760                 }
1761                 print "</tr>\n";
1762         }
1763         print "</table>\n" .
1764               "</div>";
1765         git_footer_html();
1766 }
1767
1768 sub git_rss {
1769         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
1770         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
1771                 or die_error(undef, "Open git-rev-list failed.");
1772         my @revlist = map { chomp; $_ } <$fd>;
1773         close $fd or die_error(undef, "Reading rev-list failed.");
1774         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
1775         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
1776               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
1777         print "<channel>\n";
1778         print "<title>$project</title>\n".
1779               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
1780               "<description>$project log</description>\n".
1781               "<language>en</language>\n";
1782
1783         for (my $i = 0; $i <= $#revlist; $i++) {
1784                 my $commit = $revlist[$i];
1785                 my %co = git_read_commit($commit);
1786                 # we read 150, we always show 30 and the ones more recent than 48 hours
1787                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
1788                         last;
1789                 }
1790                 my %cd = date_str($co{'committer_epoch'});
1791                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
1792                 my @difftree = map { chomp; $_ } <$fd>;
1793                 close $fd or next;
1794                 print "<item>\n" .
1795                       "<title>" .
1796                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
1797                       "</title>\n" .
1798                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
1799                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
1800                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
1801                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
1802                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
1803                       "<content:encoded>" .
1804                       "<![CDATA[\n";
1805                 my $comment = $co{'comment'};
1806                 foreach my $line (@$comment) {
1807                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
1808                         print "$line<br/>\n";
1809                 }
1810                 print "<br/>\n";
1811                 foreach my $line (@difftree) {
1812                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
1813                                 next;
1814                         }
1815                         my $file = validate_input(unquote($7));
1816                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
1817                         print "$file<br/>\n";
1818                 }
1819                 print "]]>\n" .
1820                       "</content:encoded>\n" .
1821                       "</item>\n";
1822         }
1823         print "</channel></rss>";
1824 }
1825
1826 sub git_opml {
1827         my @list = git_read_projects();
1828
1829         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
1830         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
1831               "<opml version=\"1.0\">\n".
1832               "<head>".
1833               "  <title>$site_name Git OPML Export</title>\n".
1834               "</head>\n".
1835               "<body>\n".
1836               "<outline text=\"git RSS feeds\">\n";
1837
1838         foreach my $pr (@list) {
1839                 my %proj = %$pr;
1840                 my $head = git_read_head($proj{'path'});
1841                 if (!defined $head) {
1842                         next;
1843                 }
1844                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
1845                 my %co = git_read_commit($head);
1846                 if (!%co) {
1847                         next;
1848                 }
1849
1850                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
1851                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
1852                 my $html = "$my_url?p=$proj{'path'};a=summary";
1853                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
1854         }
1855         print "</outline>\n".
1856               "</body>\n".
1857               "</opml>\n";
1858 }
1859
1860 sub git_log {
1861         my $head = git_read_head($project);
1862         if (!defined $hash) {
1863                 $hash = $head;
1864         }
1865         if (!defined $page) {
1866                 $page = 0;
1867         }
1868         my $refs = read_info_ref();
1869
1870         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1871         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1872                 or die_error(undef, "Open git-rev-list failed.");
1873         my @revlist = map { chomp; $_ } <$fd>;
1874         close $fd;
1875
1876         my $paging_nav = '';
1877         if ($hash ne $head || $page) {
1878                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "HEAD");
1879         } else {
1880                 $paging_nav .= "HEAD";
1881         }
1882         if ($page > 0) {
1883                 $paging_nav .= " &sdot; " .
1884                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
1885         } else {
1886                 $paging_nav .= " &sdot; prev";
1887         }
1888         if ($#revlist >= (100 * ($page+1)-1)) {
1889                 $paging_nav .= " &sdot; " .
1890                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
1891         } else {
1892                 $paging_nav .= " &sdot; next";
1893         }
1894
1895         git_header_html();
1896         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1897
1898         if (!@revlist) {
1899                 print "<div>\n" .
1900                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
1901                       "</div>\n";
1902                 my %co = git_read_commit($hash);
1903                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1904         }
1905         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1906                 my $commit = $revlist[$i];
1907                 my $ref = "";
1908                 if (defined $refs->{$commit}) {
1909                         $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
1910                 }
1911                 my %co = git_read_commit($commit);
1912                 next if !%co;
1913                 my %ad = date_str($co{'author_epoch'});
1914                 print "<div>\n" .
1915                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "title"},
1916                       "<span class=\"age\">$co{'age_string'}</span>" . esc_html($co{'title'}) . $ref) . "\n";
1917                 print "</div>\n";
1918                 print "<div class=\"title_text\">\n" .
1919                       "<div class=\"log_link\">\n" .
1920                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1921                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1922                       "<br/>\n" .
1923                       "</div>\n" .
1924                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1925                       "</div>\n" .
1926                       "<div class=\"log_body\">\n";
1927                 my $comment = $co{'comment'};
1928                 my $empty = 0;
1929                 foreach my $line (@$comment) {
1930                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1931                                 next;
1932                         }
1933                         if ($line eq "") {
1934                                 if ($empty) {
1935                                         next;
1936                                 }
1937                                 $empty = 1;
1938                         } else {
1939                                 $empty = 0;
1940                         }
1941                         print format_log_line_html($line) . "<br/>\n";
1942                 }
1943                 if (!$empty) {
1944                         print "<br/>\n";
1945                 }
1946                 print "</div>\n";
1947         }
1948         git_footer_html();
1949 }
1950
1951 sub git_commit {
1952         my %co = git_read_commit($hash);
1953         if (!%co) {
1954                 die_error(undef, "Unknown commit object.");
1955         }
1956         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1957         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1958
1959         my $parent = $co{'parent'};
1960         if (!defined $parent) {
1961                 $parent = "--root";
1962         }
1963         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1964                 or die_error(undef, "Open git-diff-tree failed.");
1965         my @difftree = map { chomp; $_ } <$fd>;
1966         close $fd or die_error(undef, "Reading git-diff-tree failed.");
1967
1968         # non-textual hash id's can be cached
1969         my $expires;
1970         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1971                 $expires = "+1d";
1972         }
1973         my $refs = read_info_ref();
1974         my $ref = "";
1975         if (defined $refs->{$co{'id'}}) {
1976                 $ref = " <span class=\"tag\">" . esc_html($refs->{$co{'id'}}) . "</span>";
1977         }
1978         git_header_html(undef, $expires);
1979         my $formats_nav = '';
1980         if (defined $file_name && defined $co{'parent'}) {
1981                 my $parent = $co{'parent'};
1982                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1983         }
1984         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1985                                                          $hash, $co{'tree'}, $hash,
1986                                                          $formats_nav);
1987
1988         if (defined $co{'parent'}) {
1989                 print "<div>\n" .
1990                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
1991                       "</div>\n";
1992         } else {
1993                 print "<div>\n" .
1994                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
1995                       "</div>\n";
1996         }
1997         print "<div class=\"title_text\">\n" .
1998               "<table cellspacing=\"0\">\n";
1999         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2000               "<tr>" .
2001               "<td></td><td> $ad{'rfc2822'}";
2002         if ($ad{'hour_local'} < 6) {
2003                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2004         } else {
2005                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2006         }
2007         print "</td>" .
2008               "</tr>\n";
2009         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2010         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
2011         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2012         print "<tr>" .
2013               "<td>tree</td>" .
2014               "<td class=\"sha1\">" .
2015               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
2016               "</td>" .
2017               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
2018               "</td>" .
2019               "</tr>\n";
2020         my $parents = $co{'parents'};
2021         foreach my $par (@$parents) {
2022                 print "<tr>" .
2023                       "<td>parent</td>" .
2024                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
2025                       "<td class=\"link\">" .
2026                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
2027                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
2028                       "</td>" .
2029                       "</tr>\n";
2030         }
2031         print "</table>".
2032               "</div>\n";
2033         print "<div class=\"page_body\">\n";
2034         my $comment = $co{'comment'};
2035         my $empty = 0;
2036         my $signed = 0;
2037         foreach my $line (@$comment) {
2038                 # print only one empty line
2039                 if ($line eq "") {
2040                         if ($empty || $signed) {
2041                                 next;
2042                         }
2043                         $empty = 1;
2044                 } else {
2045                         $empty = 0;
2046                 }
2047                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2048                         $signed = 1;
2049                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2050                 } else {
2051                         $signed = 0;
2052                         print format_log_line_html($line) . "<br/>\n";
2053                 }
2054         }
2055         print "</div>\n";
2056         print "<div class=\"list_head\">\n";
2057         if ($#difftree > 10) {
2058                 print(($#difftree + 1) . " files changed:\n");
2059         }
2060         print "</div>\n";
2061         print "<table class=\"diff_tree\">\n";
2062         my $alternate = 0;
2063         foreach my $line (@difftree) {
2064                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2065                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2066                 if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2067                         next;
2068                 }
2069                 my $from_mode = $1;
2070                 my $to_mode = $2;
2071                 my $from_id = $3;
2072                 my $to_id = $4;
2073                 my $status = $5;
2074                 my $similarity = $6;
2075                 my $file = validate_input(unquote($7));
2076                 if ($alternate) {
2077                         print "<tr class=\"dark\">\n";
2078                 } else {
2079                         print "<tr class=\"light\">\n";
2080                 }
2081                 $alternate ^= 1;
2082                 if ($status eq "A") {
2083                         my $mode_chng = "";
2084                         if (S_ISREG(oct $to_mode)) {
2085                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2086                         }
2087                         print "<td>" .
2088                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2089                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2090                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2091                 } elsif ($status eq "D") {
2092                         print "<td>" .
2093                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2094                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2095                               "<td class=\"link\">" .
2096                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2097                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2098                               "</td>\n"
2099                 } elsif ($status eq "M" || $status eq "T") {
2100                         my $mode_chnge = "";
2101                         if ($from_mode != $to_mode) {
2102                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2103                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2104                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2105                                 }
2106                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2107                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2108                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2109                                         } elsif (S_ISREG($to_mode)) {
2110                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2111                                         }
2112                                 }
2113                                 $mode_chnge .= "]</span>\n";
2114                         }
2115                         print "<td>";
2116                         if ($to_id ne $from_id) {
2117                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2118                         } else {
2119                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2120                         }
2121                         print "</td>\n" .
2122                               "<td>$mode_chnge</td>\n" .
2123                               "<td class=\"link\">";
2124                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2125                         if ($to_id ne $from_id) {
2126                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2127                         }
2128                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2129                         print "</td>\n";
2130                 } elsif ($status eq "R") {
2131                         my ($from_file, $to_file) = split "\t", $file;
2132                         my $mode_chng = "";
2133                         if ($from_mode != $to_mode) {
2134                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2135                         }
2136                         print "<td>" .
2137                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2138                               "<td><span class=\"file_status moved\">[moved from " .
2139                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2140                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2141                               "<td class=\"link\">" .
2142                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2143                         if ($to_id ne $from_id) {
2144                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2145                         }
2146                         print "</td>\n";
2147                 }
2148                 print "</tr>\n";
2149         }
2150         print "</table>\n";
2151         git_footer_html();
2152 }
2153
2154 sub git_blobdiff {
2155         mkdir($git_temp, 0700);
2156         git_header_html();
2157         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2158                 my $formats_nav =
2159                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2160                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2161                 print "<div>\n" .
2162                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
2163                       "</div>\n";
2164         } else {
2165                 print "<div class=\"page_nav\">\n" .
2166                       "<br/><br/></div>\n" .
2167                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2168         }
2169         git_print_page_path($file_name, "blob");
2170         print "<div class=\"page_body\">\n" .
2171               "<div class=\"diff_info\">blob:" .
2172               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2173               " -> blob:" .
2174               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2175               "</div>\n";
2176         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2177         print "</div>";
2178         git_footer_html();
2179 }
2180
2181 sub git_blobdiff_plain {
2182         mkdir($git_temp, 0700);
2183         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2184         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2185 }
2186
2187 sub git_commitdiff {
2188         mkdir($git_temp, 0700);
2189         my %co = git_read_commit($hash);
2190         if (!%co) {
2191                 die_error(undef, "Unknown commit object.");
2192         }
2193         if (!defined $hash_parent) {
2194                 $hash_parent = $co{'parent'};
2195         }
2196         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2197                 or die_error(undef, "Open git-diff-tree failed.");
2198         my @difftree = map { chomp; $_ } <$fd>;
2199         close $fd or die_error(undef, "Reading diff-tree failed.");
2200
2201         # non-textual hash id's can be cached
2202         my $expires;
2203         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2204                 $expires = "+1d";
2205         }
2206         my $refs = read_info_ref();
2207         my $ref = "";
2208         if (defined $refs->{$co{'id'}}) {
2209                 $ref = " <span class=\"tag\">" . esc_html($refs->{$co{'id'}}) . "</span>";
2210         }
2211         git_header_html(undef, $expires);
2212         my $formats_nav =
2213                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2214         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2215         print "<div>\n" .
2216               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
2217               "</div>\n";
2218         print "<div class=\"page_body\">\n";
2219         my $comment = $co{'comment'};
2220         my $empty = 0;
2221         my $signed = 0;
2222         my @log = @$comment;
2223         # remove first and empty lines after that
2224         shift @log;
2225         while (defined $log[0] && $log[0] eq "") {
2226                 shift @log;
2227         }
2228         foreach my $line (@log) {
2229                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2230                         next;
2231                 }
2232                 if ($line eq "") {
2233                         if ($empty) {
2234                                 next;
2235                         }
2236                         $empty = 1;
2237                 } else {
2238                         $empty = 0;
2239                 }
2240                 print format_log_line_html($line) . "<br/>\n";
2241         }
2242         print "<br/>\n";
2243         foreach my $line (@difftree) {
2244                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2245                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2246                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2247                 my $from_mode = $1;
2248                 my $to_mode = $2;
2249                 my $from_id = $3;
2250                 my $to_id = $4;
2251                 my $status = $5;
2252                 my $file = validate_input(unquote($6));
2253                 if ($status eq "A") {
2254                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2255                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2256                               "</div>\n";
2257                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2258                 } elsif ($status eq "D") {
2259                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2260                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2261                               "</div>\n";
2262                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2263                 } elsif ($status eq "M") {
2264                         if ($from_id ne $to_id) {
2265                                 print "<div class=\"diff_info\">" .
2266                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2267                                       " -> " .
2268                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2269                                 print "</div>\n";
2270                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2271                         }
2272                 }
2273         }
2274         print "<br/>\n" .
2275               "</div>";
2276         git_footer_html();
2277 }
2278
2279 sub git_commitdiff_plain {
2280         mkdir($git_temp, 0700);
2281         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2282                 or die_error(undef, "Open git-diff-tree failed.");
2283         my @difftree = map { chomp; $_ } <$fd>;
2284         close $fd or die_error(undef, "Reading diff-tree failed.");
2285
2286         # try to figure out the next tag after this commit
2287         my $tagname;
2288         my $refs = read_info_ref("tags");
2289         open $fd, "-|", $GIT, "rev-list", "HEAD";
2290         my @commits = map { chomp; $_ } <$fd>;
2291         close $fd;
2292         foreach my $commit (@commits) {
2293                 if (defined $refs->{$commit}) {
2294                         $tagname = $refs->{$commit}
2295                 }
2296                 if ($commit eq $hash) {
2297                         last;
2298                 }
2299         }
2300
2301         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2302         my %co = git_read_commit($hash);
2303         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2304         my $comment = $co{'comment'};
2305         print "From: $co{'author'}\n" .
2306               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2307               "Subject: $co{'title'}\n";
2308         if (defined $tagname) {
2309                 print "X-Git-Tag: $tagname\n";
2310         }
2311         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2312               "\n";
2313
2314         foreach my $line (@$comment) {;
2315                 print "$line\n";
2316         }
2317         print "---\n\n";
2318
2319         foreach my $line (@difftree) {
2320                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2321                 my $from_id = $3;
2322                 my $to_id = $4;
2323                 my $status = $5;
2324                 my $file = $6;
2325                 if ($status eq "A") {
2326                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2327                 } elsif ($status eq "D") {
2328                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2329                 } elsif ($status eq "M") {
2330                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2331                 }
2332         }
2333 }
2334
2335 sub git_history {
2336         if (!defined $hash_base) {
2337                 $hash_base = git_read_head($project);
2338         }
2339         my $ftype;
2340         my %co = git_read_commit($hash_base);
2341         if (!%co) {
2342                 die_error(undef, "Unknown commit object.");
2343         }
2344         my $refs = read_info_ref();
2345         git_header_html();
2346         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2347         print "<div>\n" .
2348               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
2349               "</div>\n";
2350         if (!defined $hash && defined $file_name) {
2351                 $hash = git_get_hash_by_path($hash_base, $file_name);
2352         }
2353         if (defined $hash) {
2354                 $ftype = git_get_type($hash);
2355         }
2356         git_print_page_path($file_name, $ftype);
2357
2358         open my $fd, "-|",
2359                 $GIT, "rev-list", "--full-history", $hash_base, "--", "\'$file_name\'";
2360         print "<table cellspacing=\"0\">\n";
2361         my $alternate = 0;
2362         while (my $line = <$fd>) {
2363                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2364                         my $commit = $1;
2365                         my %co = git_read_commit($commit);
2366                         if (!%co) {
2367                                 next;
2368                         }
2369                         my $ref = "";
2370                         if (defined $refs->{$commit}) {
2371                                 $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
2372                         }
2373                         if ($alternate) {
2374                                 print "<tr class=\"dark\">\n";
2375                         } else {
2376                                 print "<tr class=\"light\">\n";
2377                         }
2378                         $alternate ^= 1;
2379                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2380                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2381                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2382                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2383                               "<td class=\"link\">" .
2384                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2385                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2386                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=$commit;f=$file_name")}, "blob");
2387                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2388                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2389                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2390                                 print " | " .
2391                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2392                                 "diff to current");
2393                         }
2394                         print "</td>\n" .
2395                               "</tr>\n";
2396                 }
2397         }
2398         print "</table>\n";
2399         close $fd;
2400         git_footer_html();
2401 }
2402
2403 sub git_search {
2404         if (!defined $searchtext) {
2405                 die_error("", "Text field empty.");
2406         }
2407         if (!defined $hash) {
2408                 $hash = git_read_head($project);
2409         }
2410         my %co = git_read_commit($hash);
2411         if (!%co) {
2412                 die_error(undef, "Unknown commit object.");
2413         }
2414         # pickaxe may take all resources of your box and run for several minutes
2415         # with every query - so decide by yourself how public you make this feature :)
2416         my $commit_search = 1;
2417         my $author_search = 0;
2418         my $committer_search = 0;
2419         my $pickaxe_search = 0;
2420         if ($searchtext =~ s/^author\\://i) {
2421                 $author_search = 1;
2422         } elsif ($searchtext =~ s/^committer\\://i) {
2423                 $committer_search = 1;
2424         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2425                 $commit_search = 0;
2426                 $pickaxe_search = 1;
2427         }
2428         git_header_html();
2429         git_page_nav('','', $hash,$co{'tree'},$hash);
2430
2431         print "<div>\n" .
2432               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
2433               "</div>\n";
2434         print "<table cellspacing=\"0\">\n";
2435         my $alternate = 0;
2436         if ($commit_search) {
2437                 $/ = "\0";
2438                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2439                 while (my $commit_text = <$fd>) {
2440                         if (!grep m/$searchtext/i, $commit_text) {
2441                                 next;
2442                         }
2443                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2444                                 next;
2445                         }
2446                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2447                                 next;
2448                         }
2449                         my @commit_lines = split "\n", $commit_text;
2450                         my %co = git_read_commit(undef, \@commit_lines);
2451                         if (!%co) {
2452                                 next;
2453                         }
2454                         if ($alternate) {
2455                                 print "<tr class=\"dark\">\n";
2456                         } else {
2457                                 print "<tr class=\"light\">\n";
2458                         }
2459                         $alternate ^= 1;
2460                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2461                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2462                               "<td>" .
2463                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2464                         my $comment = $co{'comment'};
2465                         foreach my $line (@$comment) {
2466                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2467                                         my $lead = esc_html($1) || "";
2468                                         $lead = chop_str($lead, 30, 10);
2469                                         my $match = esc_html($2) || "";
2470                                         my $trail = esc_html($3) || "";
2471                                         $trail = chop_str($trail, 30, 10);
2472                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2473                                         print chop_str($text, 80, 5) . "<br/>\n";
2474                                 }
2475                         }
2476                         print "</td>\n" .
2477                               "<td class=\"link\">" .
2478                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2479                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2480                         print "</td>\n" .
2481                               "</tr>\n";
2482                 }
2483                 close $fd;
2484         }
2485
2486         if ($pickaxe_search) {
2487                 $/ = "\n";
2488                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2489                 undef %co;
2490                 my @files;
2491                 while (my $line = <$fd>) {
2492                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2493                                 my %set;
2494                                 $set{'file'} = $6;
2495                                 $set{'from_id'} = $3;
2496                                 $set{'to_id'} = $4;
2497                                 $set{'id'} = $set{'to_id'};
2498                                 if ($set{'id'} =~ m/0{40}/) {
2499                                         $set{'id'} = $set{'from_id'};
2500                                 }
2501                                 if ($set{'id'} =~ m/0{40}/) {
2502                                         next;
2503                                 }
2504                                 push @files, \%set;
2505                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2506                                 if (%co) {
2507                                         if ($alternate) {
2508                                                 print "<tr class=\"dark\">\n";
2509                                         } else {
2510                                                 print "<tr class=\"light\">\n";
2511                                         }
2512                                         $alternate ^= 1;
2513                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2514                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2515                                               "<td>" .
2516                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2517                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2518                                         while (my $setref = shift @files) {
2519                                                 my %set = %$setref;
2520                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2521                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2522                                                       "<br/>\n";
2523                                         }
2524                                         print "</td>\n" .
2525                                               "<td class=\"link\">" .
2526                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2527                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2528                                         print "</td>\n" .
2529                                               "</tr>\n";
2530                                 }
2531                                 %co = git_read_commit($1);
2532                         }
2533                 }
2534                 close $fd;
2535         }
2536         print "</table>\n";
2537         git_footer_html();
2538 }
2539
2540 sub git_shortlog {
2541         my $head = git_read_head($project);
2542         if (!defined $hash) {
2543                 $hash = $head;
2544         }
2545         if (!defined $page) {
2546                 $page = 0;
2547         }
2548         my $refs = read_info_ref();
2549
2550         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2551         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2552                 or die_error(undef, "Open git-rev-list failed.");
2553         my @revlist = map { chomp; $_ } <$fd>;
2554         close $fd;
2555
2556         my $paging_nav = '';
2557         if ($hash ne $head || $page) {
2558                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "HEAD");
2559         } else {
2560                 $paging_nav .= "HEAD";
2561         }
2562         if ($page > 0) {
2563                 $paging_nav .= " &sdot; " .
2564                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
2565         } else {
2566                 $paging_nav .= " &sdot; prev";
2567         }
2568         if ($#revlist >= (100 * ($page+1)-1)) {
2569                 $paging_nav .= " &sdot; " .
2570                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
2571         } else {
2572                 $paging_nav .= " &sdot; next";
2573         }
2574
2575         git_header_html();
2576         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2577
2578         print "<div>\n" .
2579               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
2580               "</div>\n";
2581         print "<table cellspacing=\"0\">\n";
2582         my $alternate = 0;
2583         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2584                 my $commit = $revlist[$i];
2585                 my $ref = "";
2586                 if (defined $refs->{$commit}) {
2587                         $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
2588                 }
2589                 my %co = git_read_commit($commit);
2590                 my %ad = date_str($co{'author_epoch'});
2591                 if ($alternate) {
2592                         print "<tr class=\"dark\">\n";
2593                 } else {
2594                         print "<tr class=\"light\">\n";
2595                 }
2596                 $alternate ^= 1;
2597                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2598                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2599                       "<td>";
2600                 if (length($co{'title_short'}) < length($co{'title'})) {
2601                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
2602                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
2603                 } else {
2604                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"},
2605                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
2606                 }
2607                 print "</td>\n" .
2608                       "<td class=\"link\">" .
2609                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2610                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2611                       "</td>\n" .
2612                       "</tr>";
2613         }
2614         if ($#revlist >= (100 * ($page+1)-1)) {
2615                 print "<tr>\n" .
2616                       "<td>" .
2617                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -title => "Alt-n"}, "next") .
2618                       "</td>\n" .
2619                       "</tr>\n";
2620         }
2621         print "</table\n>";
2622         git_footer_html();
2623 }