gitweb/gitweb.perl

   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 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # show repository only if this file exists
  58 # (only effective if this variable evaluates to true)
  59 our $export_ok = "++GITWEB_EXPORT_OK++";
  60
  61 # only allow viewing of repositories also shown on the overview page
  62 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  63
  64 # list of git base URLs used for URL to where fetch project from,
  65 # i.e. full URL is "$git_base_url/$project"
  66 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  67
  68 # default blob_plain mimetype and default charset for text/plain blob
  69 our $default_blob_plain_mimetype = 'text/plain';
  70 our $default_text_plain_charset  = undef;
  71
  72 # file to use for guessing MIME types before trying /etc/mime.types
  73 # (relative to the current git repository)
  74 our $mimetypes_file = undef;
  75
  76 # You define site-wide feature defaults here; override them with
  77 # $GITWEB_CONFIG as necessary.
  78 our %feature = (
  79         # feature => {
  80         #       'sub' => feature-sub (subroutine),
  81         #       'override' => allow-override (boolean),
  82         #       'default' => [ default options...] (array reference)}
  83         #
  84         # if feature is overridable (it means that allow-override has true value,
  85         # then feature-sub will be called with default options as parameters;
  86         # return value of feature-sub indicates if to enable specified feature
  87         #
  88         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  89
  90         'blame' => {
  91                 'sub' => \&feature_blame,
  92                 'override' => 0,
  93                 'default' => [0]},
  94
  95         'snapshot' => {
  96                 'sub' => \&feature_snapshot,
  97                 'override' => 0,
  98                 #         => [content-encoding, suffix, program]
  99                 'default' => ['x-gzip', 'gz', 'gzip']},
 100
 101         'pickaxe' => {
 102                 'sub' => \&feature_pickaxe,
 103                 'override' => 0,
 104                 'default' => [1]},
 105 );
 106
 107 sub gitweb_check_feature {
 108         my ($name) = @_;
 109         return undef unless exists $feature{$name};
 110         my ($sub, $override, @defaults) = (
 111                 $feature{$name}{'sub'},
 112                 $feature{$name}{'override'},
 113                 @{$feature{$name}{'default'}});
 114         if (!$override) { return @defaults; }
 115         return $sub->(@defaults);
 116 }
 117
 118 # To enable system wide have in $GITWEB_CONFIG
 119 # $feature{'blame'}{'default'} = [1];
 120 # To have project specific config enable override in $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} = 1;
 122 # and in project config gitweb.blame = 0|1;
 123
 124 sub feature_blame {
 125         my ($val) = git_get_project_config('blame', '--bool');
 126
 127         if ($val eq 'true') {
 128                 return 1;
 129         } elsif ($val eq 'false') {
 130                 return 0;
 131         }
 132
 133         return $_[0];
 134 }
 135
 136 # To disable system wide have in $GITWEB_CONFIG
 137 # $feature{'snapshot'}{'default'} = [undef];
 138 # To have project specific config enable override in $GITWEB_CONFIG
 139 # $feature{'blame'}{'override'} = 1;
 140 # and in project config  gitweb.snapshot = none|gzip|bzip2
 141
 142 sub feature_snapshot {
 143         my ($ctype, $suffix, $command) = @_;
 144
 145         my ($val) = git_get_project_config('snapshot');
 146
 147         if ($val eq 'gzip') {
 148                 return ('x-gzip', 'gz', 'gzip');
 149         } elsif ($val eq 'bzip2') {
 150                 return ('x-bzip2', 'bz2', 'bzip2');
 151         } elsif ($val eq 'none') {
 152                 return ();
 153         }
 154
 155         return ($ctype, $suffix, $command);
 156 }
 157
 158 # To enable system wide have in $GITWEB_CONFIG
 159 # $feature{'pickaxe'}{'default'} = [1];
 160 # To have project specific config enable override in $GITWEB_CONFIG
 161 # $feature{'pickaxe'}{'override'} = 1;
 162 # and in project config gitweb.pickaxe = 0|1;
 163
 164 sub feature_pickaxe {
 165         my ($val) = git_get_project_config('pickaxe', '--bool');
 166
 167         if ($val eq 'true') {
 168                 return (1);
 169         } elsif ($val eq 'false') {
 170                 return (0);
 171         }
 172
 173         return ($_[0]);
 174 }
 175
 176 # rename detection options for git-diff and git-diff-tree
 177 # - default is '-M', with the cost proportional to
 178 #   (number of removed files) * (number of new files).
 179 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 180 #   (number of changed files + number of removed files) * (number of new files)
 181 # - even more costly is '-C', '--find-copies-harder' with cost
 182 #   (number of files in the original tree) * (number of new files)
 183 # - one might want to include '-B' option, e.g. '-B', '-M'
 184 our @diff_opts = ('-M'); # taken from git_commit
 185
 186 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 187 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 188
 189 # version of the core git binary
 190 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 191
 192 $projects_list ||= $projectroot;
 193
 194 # ======================================================================
 195 # input validation and dispatch
 196 our $action = $cgi->param('a');
 197 if (defined $action) {
 198         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 199                 die_error(undef, "Invalid action parameter");
 200         }
 201 }
 202
 203 our $project = $cgi->param('p');
 204 if (defined $project) {
 205         if (!validate_input($project) ||
 206             !(-d "$projectroot/$project") ||
 207             !(-e "$projectroot/$project/HEAD") ||
 208             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 209             ($strict_export && !project_in_list($project))) {
 210                 undef $project;
 211                 die_error(undef, "No such project");
 212         }
 213 }
 214
 215 our $file_name = $cgi->param('f');
 216 if (defined $file_name) {
 217         if (!validate_input($file_name)) {
 218                 die_error(undef, "Invalid file parameter");
 219         }
 220 }
 221
 222 our $file_parent = $cgi->param('fp');
 223 if (defined $file_parent) {
 224         if (!validate_input($file_parent)) {
 225                 die_error(undef, "Invalid file parent parameter");
 226         }
 227 }
 228
 229 our $hash = $cgi->param('h');
 230 if (defined $hash) {
 231         if (!validate_input($hash)) {
 232                 die_error(undef, "Invalid hash parameter");
 233         }
 234 }
 235
 236 our $hash_parent = $cgi->param('hp');
 237 if (defined $hash_parent) {
 238         if (!validate_input($hash_parent)) {
 239                 die_error(undef, "Invalid hash parent parameter");
 240         }
 241 }
 242
 243 our $hash_base = $cgi->param('hb');
 244 if (defined $hash_base) {
 245         if (!validate_input($hash_base)) {
 246                 die_error(undef, "Invalid hash base parameter");
 247         }
 248 }
 249
 250 our $hash_parent_base = $cgi->param('hpb');
 251 if (defined $hash_parent_base) {
 252         if (!validate_input($hash_parent_base)) {
 253                 die_error(undef, "Invalid hash parent base parameter");
 254         }
 255 }
 256
 257 our $page = $cgi->param('pg');
 258 if (defined $page) {
 259         if ($page =~ m/[^0-9]/) {
 260                 die_error(undef, "Invalid page parameter");
 261         }
 262 }
 263
 264 our $searchtext = $cgi->param('s');
 265 if (defined $searchtext) {
 266         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 267                 die_error(undef, "Invalid search parameter");
 268         }
 269         $searchtext = quotemeta $searchtext;
 270 }
 271
 272 # now read PATH_INFO and use it as alternative to parameters
 273 sub evaluate_path_info {
 274         return if defined $project;
 275         my $path_info = $ENV{"PATH_INFO"};
 276         return if !$path_info;
 277         $path_info =~ s,^/+,,;
 278         return if !$path_info;
 279         # find which part of PATH_INFO is project
 280         $project = $path_info;
 281         $project =~ s,/+$,,;
 282         while ($project && !-e "$projectroot/$project/HEAD") {
 283                 $project =~ s,/*[^/]*$,,;
 284         }
 285         # validate project
 286         $project = validate_input($project);
 287         if (!$project ||
 288             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 289             ($strict_export && !project_in_list($project))) {
 290                 undef $project;
 291                 return;
 292         }
 293         # do not change any parameters if an action is given using the query string
 294         return if $action;
 295         $path_info =~ s,^$project/*,,;
 296         my ($refname, $pathname) = split(/:/, $path_info, 2);
 297         if (defined $pathname) {
 298                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 299                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 300                 $pathname =~ s,^/+,,;
 301                 if (!$pathname || substr($pathname, -1) eq "/") {
 302                         $action  ||= "tree";
 303                         $pathname =~ s,/$,,;
 304                 } else {
 305                         $action  ||= "blob_plain";
 306                 }
 307                 $hash_base ||= validate_input($refname);
 308                 $file_name ||= validate_input($pathname);
 309         } elsif (defined $refname) {
 310                 # we got "project.git/branch"
 311                 $action ||= "shortlog";
 312                 $hash   ||= validate_input($refname);
 313         }
 314 }
 315 evaluate_path_info();
 316
 317 # path to the current git repository
 318 our $git_dir;
 319 $git_dir = "$projectroot/$project" if $project;
 320
 321 # dispatch
 322 my %actions = (
 323         "blame" => \&git_blame2,
 324         "blobdiff" => \&git_blobdiff,
 325         "blobdiff_plain" => \&git_blobdiff_plain,
 326         "blob" => \&git_blob,
 327         "blob_plain" => \&git_blob_plain,
 328         "commitdiff" => \&git_commitdiff,
 329         "commitdiff_plain" => \&git_commitdiff_plain,
 330         "commit" => \&git_commit,
 331         "heads" => \&git_heads,
 332         "history" => \&git_history,
 333         "log" => \&git_log,
 334         "rss" => \&git_rss,
 335         "search" => \&git_search,
 336         "shortlog" => \&git_shortlog,
 337         "summary" => \&git_summary,
 338         "tag" => \&git_tag,
 339         "tags" => \&git_tags,
 340         "tree" => \&git_tree,
 341         "snapshot" => \&git_snapshot,
 342         # those below don't need $project
 343         "opml" => \&git_opml,
 344         "project_list" => \&git_project_list,
 345         "project_index" => \&git_project_index,
 346 );
 347
 348 if (defined $project) {
 349         $action ||= 'summary';
 350 } else {
 351         $action ||= 'project_list';
 352 }
 353 if (!defined($actions{$action})) {
 354         die_error(undef, "Unknown action");
 355 }
 356 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 357     !$project) {
 358         die_error(undef, "Project needed");
 359 }
 360 $actions{$action}->();
 361 exit;
 362
 363 ## ======================================================================
 364 ## action links
 365
 366 sub href(%) {
 367         my %params = @_;
 368
 369         my @mapping = (
 370                 project => "p",
 371                 action => "a",
 372                 file_name => "f",
 373                 file_parent => "fp",
 374                 hash => "h",
 375                 hash_parent => "hp",
 376                 hash_base => "hb",
 377                 hash_parent_base => "hpb",
 378                 page => "pg",
 379                 order => "o",
 380                 searchtext => "s",
 381         );
 382         my %mapping = @mapping;
 383
 384         $params{'project'} = $project unless exists $params{'project'};
 385
 386         my @result = ();
 387         for (my $i = 0; $i < @mapping; $i += 2) {
 388                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 389                 if (defined $params{$name}) {
 390                         push @result, $symbol . "=" . esc_param($params{$name});
 391                 }
 392         }
 393         return "$my_uri?" . join(';', @result);
 394 }
 395
 396
 397 ## ======================================================================
 398 ## validation, quoting/unquoting and escaping
 399
 400 sub validate_input {
 401         my $input = shift;
 402
 403         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 404                 return $input;
 405         }
 406         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 407                 return undef;
 408         }
 409         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 410                 return undef;
 411         }
 412         return $input;
 413 }
 414
 415 # quote unsafe chars, but keep the slash, even when it's not
 416 # correct, but quoted slashes look too horrible in bookmarks
 417 sub esc_param {
 418         my $str = shift;
 419         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 420         $str =~ s/\+/%2B/g;
 421         $str =~ s/ /\+/g;
 422         return $str;
 423 }
 424
 425 # replace invalid utf8 character with SUBSTITUTION sequence
 426 sub esc_html {
 427         my $str = shift;
 428         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 429         $str = escapeHTML($str);
 430         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 431         return $str;
 432 }
 433
 434 # git may return quoted and escaped filenames
 435 sub unquote {
 436         my $str = shift;
 437         if ($str =~ m/^"(.*)"$/) {
 438                 $str = $1;
 439                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 440         }
 441         return $str;
 442 }
 443
 444 # escape tabs (convert tabs to spaces)
 445 sub untabify {
 446         my $line = shift;
 447
 448         while ((my $pos = index($line, "\t")) != -1) {
 449                 if (my $count = (8 - ($pos % 8))) {
 450                         my $spaces = ' ' x $count;
 451                         $line =~ s/\t/$spaces/;
 452                 }
 453         }
 454
 455         return $line;
 456 }
 457
 458 sub project_in_list {
 459         my $project = shift;
 460         my @list = git_get_projects_list();
 461         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 462 }
 463
 464 ## ----------------------------------------------------------------------
 465 ## HTML aware string manipulation
 466
 467 sub chop_str {
 468         my $str = shift;
 469         my $len = shift;
 470         my $add_len = shift || 10;
 471
 472         # allow only $len chars, but don't cut a word if it would fit in $add_len
 473         # if it doesn't fit, cut it if it's still longer than the dots we would add
 474         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 475         my $body = $1;
 476         my $tail = $2;
 477         if (length($tail) > 4) {
 478                 $tail = " ...";
 479                 $body =~ s/&[^;]*$//; # remove chopped character entities
 480         }
 481         return "$body$tail";
 482 }
 483
 484 ## ----------------------------------------------------------------------
 485 ## functions returning short strings
 486
 487 # CSS class for given age value (in seconds)
 488 sub age_class {
 489         my $age = shift;
 490
 491         if ($age < 60*60*2) {
 492                 return "age0";
 493         } elsif ($age < 60*60*24*2) {
 494                 return "age1";
 495         } else {
 496                 return "age2";
 497         }
 498 }
 499
 500 # convert age in seconds to "nn units ago" string
 501 sub age_string {
 502         my $age = shift;
 503         my $age_str;
 504
 505         if ($age > 60*60*24*365*2) {
 506                 $age_str = (int $age/60/60/24/365);
 507                 $age_str .= " years ago";
 508         } elsif ($age > 60*60*24*(365/12)*2) {
 509                 $age_str = int $age/60/60/24/(365/12);
 510                 $age_str .= " months ago";
 511         } elsif ($age > 60*60*24*7*2) {
 512                 $age_str = int $age/60/60/24/7;
 513                 $age_str .= " weeks ago";
 514         } elsif ($age > 60*60*24*2) {
 515                 $age_str = int $age/60/60/24;
 516                 $age_str .= " days ago";
 517         } elsif ($age > 60*60*2) {
 518                 $age_str = int $age/60/60;
 519                 $age_str .= " hours ago";
 520         } elsif ($age > 60*2) {
 521                 $age_str = int $age/60;
 522                 $age_str .= " min ago";
 523         } elsif ($age > 2) {
 524                 $age_str = int $age;
 525                 $age_str .= " sec ago";
 526         } else {
 527                 $age_str .= " right now";
 528         }
 529         return $age_str;
 530 }
 531
 532 # convert file mode in octal to symbolic file mode string
 533 sub mode_str {
 534         my $mode = oct shift;
 535
 536         if (S_ISDIR($mode & S_IFMT)) {
 537                 return 'drwxr-xr-x';
 538         } elsif (S_ISLNK($mode)) {
 539                 return 'lrwxrwxrwx';
 540         } elsif (S_ISREG($mode)) {
 541                 # git cares only about the executable bit
 542                 if ($mode & S_IXUSR) {
 543                         return '-rwxr-xr-x';
 544                 } else {
 545                         return '-rw-r--r--';
 546                 };
 547         } else {
 548                 return '----------';
 549         }
 550 }
 551
 552 # convert file mode in octal to file type string
 553 sub file_type {
 554         my $mode = shift;
 555
 556         if ($mode !~ m/^[0-7]+$/) {
 557                 return $mode;
 558         } else {
 559                 $mode = oct $mode;
 560         }
 561
 562         if (S_ISDIR($mode & S_IFMT)) {
 563                 return "directory";
 564         } elsif (S_ISLNK($mode)) {
 565                 return "symlink";
 566         } elsif (S_ISREG($mode)) {
 567                 return "file";
 568         } else {
 569                 return "unknown";
 570         }
 571 }
 572
 573 ## ----------------------------------------------------------------------
 574 ## functions returning short HTML fragments, or transforming HTML fragments
 575 ## which don't beling to other sections
 576
 577 # format line of commit message or tag comment
 578 sub format_log_line_html {
 579         my $line = shift;
 580
 581         $line = esc_html($line);
 582         $line =~ s/ /&nbsp;/g;
 583         if ($line =~ m/([0-9a-fA-F]{40})/) {
 584                 my $hash_text = $1;
 585                 if (git_get_type($hash_text) eq "commit") {
 586                         my $link =
 587                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 588                                         -class => "text"}, $hash_text);
 589                         $line =~ s/$hash_text/$link/;
 590                 }
 591         }
 592         return $line;
 593 }
 594
 595 # format marker of refs pointing to given object
 596 sub format_ref_marker {
 597         my ($refs, $id) = @_;
 598         my $markers = '';
 599
 600         if (defined $refs->{$id}) {
 601                 foreach my $ref (@{$refs->{$id}}) {
 602                         my ($type, $name) = qw();
 603                         # e.g. tags/v2.6.11 or heads/next
 604                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 605                                 $type = $1;
 606                                 $name = $2;
 607                         } else {
 608                                 $type = "ref";
 609                                 $name = $ref;
 610                         }
 611
 612                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 613                 }
 614         }
 615
 616         if ($markers) {
 617                 return ' <span class="refs">'. $markers . '</span>';
 618         } else {
 619                 return "";
 620         }
 621 }
 622
 623 # format, perhaps shortened and with markers, title line
 624 sub format_subject_html {
 625         my ($long, $short, $href, $extra) = @_;
 626         $extra = '' unless defined($extra);
 627
 628         if (length($short) < length($long)) {
 629                 return $cgi->a({-href => $href, -class => "list subject",
 630                                 -title => $long},
 631                        esc_html($short) . $extra);
 632         } else {
 633                 return $cgi->a({-href => $href, -class => "list subject"},
 634                        esc_html($long)  . $extra);
 635         }
 636 }
 637
 638 sub format_diff_line {
 639         my $line = shift;
 640         my $char = substr($line, 0, 1);
 641         my $diff_class = "";
 642
 643         chomp $line;
 644
 645         if ($char eq '+') {
 646                 $diff_class = " add";
 647         } elsif ($char eq "-") {
 648                 $diff_class = " rem";
 649         } elsif ($char eq "@") {
 650                 $diff_class = " chunk_header";
 651         } elsif ($char eq "\\") {
 652                 $diff_class = " incomplete";
 653         }
 654         $line = untabify($line);
 655         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 656 }
 657
 658 ## ----------------------------------------------------------------------
 659 ## git utility subroutines, invoking git commands
 660
 661 # returns path to the core git executable and the --git-dir parameter as list
 662 sub git_cmd {
 663         return $GIT, '--git-dir='.$git_dir;
 664 }
 665
 666 # returns path to the core git executable and the --git-dir parameter as string
 667 sub git_cmd_str {
 668         return join(' ', git_cmd());
 669 }
 670
 671 # get HEAD ref of given project as hash
 672 sub git_get_head_hash {
 673         my $project = shift;
 674         my $o_git_dir = $git_dir;
 675         my $retval = undef;
 676         $git_dir = "$projectroot/$project";
 677         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 678                 my $head = <$fd>;
 679                 close $fd;
 680                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 681                         $retval = $1;
 682                 }
 683         }
 684         if (defined $o_git_dir) {
 685                 $git_dir = $o_git_dir;
 686         }
 687         return $retval;
 688 }
 689
 690 # get type of given object
 691 sub git_get_type {
 692         my $hash = shift;
 693
 694         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 695         my $type = <$fd>;
 696         close $fd or return;
 697         chomp $type;
 698         return $type;
 699 }
 700
 701 sub git_get_project_config {
 702         my ($key, $type) = @_;
 703
 704         return unless ($key);
 705         $key =~ s/^gitweb\.//;
 706         return if ($key =~ m/\W/);
 707
 708         my @x = (git_cmd(), 'repo-config');
 709         if (defined $type) { push @x, $type; }
 710         push @x, "--get";
 711         push @x, "gitweb.$key";
 712         my $val = qx(@x);
 713         chomp $val;
 714         return ($val);
 715 }
 716
 717 # get hash of given path at given ref
 718 sub git_get_hash_by_path {
 719         my $base = shift;
 720         my $path = shift || return undef;
 721         my $type = shift;
 722
 723         my $tree = $base;
 724
 725         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 726                 or die_error(undef, "Open git-ls-tree failed");
 727         my $line = <$fd>;
 728         close $fd or return undef;
 729
 730         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 731         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 732         if (defined $type && $type ne $2) {
 733                 # type doesn't match
 734                 return undef;
 735         }
 736         return $3;
 737 }
 738
 739 ## ......................................................................
 740 ## git utility functions, directly accessing git repository
 741
 742 sub git_get_project_description {
 743         my $path = shift;
 744
 745         open my $fd, "$projectroot/$path/description" or return undef;
 746         my $descr = <$fd>;
 747         close $fd;
 748         chomp $descr;
 749         return $descr;
 750 }
 751
 752 sub git_get_project_url_list {
 753         my $path = shift;
 754
 755         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 756         my @git_project_url_list = map { chomp; $_ } <$fd>;
 757         close $fd;
 758
 759         return wantarray ? @git_project_url_list : \@git_project_url_list;
 760 }
 761
 762 sub git_get_projects_list {
 763         my @list;
 764
 765         if (-d $projects_list) {
 766                 # search in directory
 767                 my $dir = $projects_list;
 768                 my $pfxlen = length("$dir");
 769
 770                 File::Find::find({
 771                         follow_fast => 1, # follow symbolic links
 772                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 773                         wanted => sub {
 774                                 # skip project-list toplevel, if we get it.
 775                                 return if (m!^[/.]$!);
 776                                 # only directories can be git repositories
 777                                 return unless (-d $_);
 778
 779                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 780                                 # we check related file in $projectroot
 781                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 782                                     -e "$projectroot/$subdir/$export_ok")) {
 783                                         push @list, { path => $subdir };
 784                                         $File::Find::prune = 1;
 785                                 }
 786                         },
 787                 }, "$dir");
 788
 789         } elsif (-f $projects_list) {
 790                 # read from file(url-encoded):
 791                 # 'git%2Fgit.git Linus+Torvalds'
 792                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 793                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 794                 open my ($fd), $projects_list or return undef;
 795                 while (my $line = <$fd>) {
 796                         chomp $line;
 797                         my ($path, $owner) = split ' ', $line;
 798                         $path = unescape($path);
 799                         $owner = unescape($owner);
 800                         if (!defined $path) {
 801                                 next;
 802                         }
 803                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 804                             -e "$projectroot/$path/$export_ok")) {
 805                                 my $pr = {
 806                                         path => $path,
 807                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 808                                 };
 809                                 push @list, $pr
 810                         }
 811                 }
 812                 close $fd;
 813         }
 814         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 815         return @list;
 816 }
 817
 818 sub git_get_project_owner {
 819         my $project = shift;
 820         my $owner;
 821
 822         return undef unless $project;
 823
 824         # read from file (url-encoded):
 825         # 'git%2Fgit.git Linus+Torvalds'
 826         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 827         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 828         if (-f $projects_list) {
 829                 open (my $fd , $projects_list);
 830                 while (my $line = <$fd>) {
 831                         chomp $line;
 832                         my ($pr, $ow) = split ' ', $line;
 833                         $pr = unescape($pr);
 834                         $ow = unescape($ow);
 835                         if ($pr eq $project) {
 836                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 837                                 last;
 838                         }
 839                 }
 840                 close $fd;
 841         }
 842         if (!defined $owner) {
 843                 $owner = get_file_owner("$projectroot/$project");
 844         }
 845
 846         return $owner;
 847 }
 848
 849 sub git_get_references {
 850         my $type = shift || "";
 851         my %refs;
 852         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 853         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 854         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 855                 or return;
 856
 857         while (my $line = <$fd>) {
 858                 chomp $line;
 859                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 860                         if (defined $refs{$1}) {
 861                                 push @{$refs{$1}}, $2;
 862                         } else {
 863                                 $refs{$1} = [ $2 ];
 864                         }
 865                 }
 866         }
 867         close $fd or return;
 868         return \%refs;
 869 }
 870
 871 sub git_get_rev_name_tags {
 872         my $hash = shift || return undef;
 873
 874         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 875                 or return;
 876         my $name_rev = <$fd>;
 877         close $fd;
 878
 879         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 880                 return $1;
 881         } else {
 882                 # catches also '$hash undefined' output
 883                 return undef;
 884         }
 885 }
 886
 887 ## ----------------------------------------------------------------------
 888 ## parse to hash functions
 889
 890 sub parse_date {
 891         my $epoch = shift;
 892         my $tz = shift || "-0000";
 893
 894         my %date;
 895         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 896         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 897         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 898         $date{'hour'} = $hour;
 899         $date{'minute'} = $min;
 900         $date{'mday'} = $mday;
 901         $date{'day'} = $days[$wday];
 902         $date{'month'} = $months[$mon];
 903         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 904                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 905         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 906                              $mday, $months[$mon], $hour ,$min;
 907
 908         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 909         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 910         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 911         $date{'hour_local'} = $hour;
 912         $date{'minute_local'} = $min;
 913         $date{'tz_local'} = $tz;
 914         return %date;
 915 }
 916
 917 sub parse_tag {
 918         my $tag_id = shift;
 919         my %tag;
 920         my @comment;
 921
 922         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 923         $tag{'id'} = $tag_id;
 924         while (my $line = <$fd>) {
 925                 chomp $line;
 926                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 927                         $tag{'object'} = $1;
 928                 } elsif ($line =~ m/^type (.+)$/) {
 929                         $tag{'type'} = $1;
 930                 } elsif ($line =~ m/^tag (.+)$/) {
 931                         $tag{'name'} = $1;
 932                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 933                         $tag{'author'} = $1;
 934                         $tag{'epoch'} = $2;
 935                         $tag{'tz'} = $3;
 936                 } elsif ($line =~ m/--BEGIN/) {
 937                         push @comment, $line;
 938                         last;
 939                 } elsif ($line eq "") {
 940                         last;
 941                 }
 942         }
 943         push @comment, <$fd>;
 944         $tag{'comment'} = \@comment;
 945         close $fd or return;
 946         if (!defined $tag{'name'}) {
 947                 return
 948         };
 949         return %tag
 950 }
 951
 952 sub parse_commit {
 953         my $commit_id = shift;
 954         my $commit_text = shift;
 955
 956         my @commit_lines;
 957         my %co;
 958
 959         if (defined $commit_text) {
 960                 @commit_lines = @$commit_text;
 961         } else {
 962                 $/ = "\0";
 963                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 964                         or return;
 965                 @commit_lines = split '\n', <$fd>;
 966                 close $fd or return;
 967                 $/ = "\n";
 968                 pop @commit_lines;
 969         }
 970         my $header = shift @commit_lines;
 971         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 972                 return;
 973         }
 974         ($co{'id'}, my @parents) = split ' ', $header;
 975         $co{'parents'} = \@parents;
 976         $co{'parent'} = $parents[0];
 977         while (my $line = shift @commit_lines) {
 978                 last if $line eq "\n";
 979                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 980                         $co{'tree'} = $1;
 981                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 982                         $co{'author'} = $1;
 983                         $co{'author_epoch'} = $2;
 984                         $co{'author_tz'} = $3;
 985                         if ($co{'author'} =~ m/^([^<]+) </) {
 986                                 $co{'author_name'} = $1;
 987                         } else {
 988                                 $co{'author_name'} = $co{'author'};
 989                         }
 990                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 991                         $co{'committer'} = $1;
 992                         $co{'committer_epoch'} = $2;
 993                         $co{'committer_tz'} = $3;
 994                         $co{'committer_name'} = $co{'committer'};
 995                         $co{'committer_name'} =~ s/ <.*//;
 996                 }
 997         }
 998         if (!defined $co{'tree'}) {
 999                 return;
1000         };
1001
1002         foreach my $title (@commit_lines) {
1003                 $title =~ s/^    //;
1004                 if ($title ne "") {
1005                         $co{'title'} = chop_str($title, 80, 5);
1006                         # remove leading stuff of merges to make the interesting part visible
1007                         if (length($title) > 50) {
1008                                 $title =~ s/^Automatic //;
1009                                 $title =~ s/^merge (of|with) /Merge ... /i;
1010                                 if (length($title) > 50) {
1011                                         $title =~ s/(http|rsync):\/\///;
1012                                 }
1013                                 if (length($title) > 50) {
1014                                         $title =~ s/(master|www|rsync)\.//;
1015                                 }
1016                                 if (length($title) > 50) {
1017                                         $title =~ s/kernel.org:?//;
1018                                 }
1019                                 if (length($title) > 50) {
1020                                         $title =~ s/\/pub\/scm//;
1021                                 }
1022                         }
1023                         $co{'title_short'} = chop_str($title, 50, 5);
1024                         last;
1025                 }
1026         }
1027         # remove added spaces
1028         foreach my $line (@commit_lines) {
1029                 $line =~ s/^    //;
1030         }
1031         $co{'comment'} = \@commit_lines;
1032
1033         my $age = time - $co{'committer_epoch'};
1034         $co{'age'} = $age;
1035         $co{'age_string'} = age_string($age);
1036         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1037         if ($age > 60*60*24*7*2) {
1038                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1039                 $co{'age_string_age'} = $co{'age_string'};
1040         } else {
1041                 $co{'age_string_date'} = $co{'age_string'};
1042                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1043         }
1044         return %co;
1045 }
1046
1047 # parse ref from ref_file, given by ref_id, with given type
1048 sub parse_ref {
1049         my $ref_file = shift;
1050         my $ref_id = shift;
1051         my $type = shift || git_get_type($ref_id);
1052         my %ref_item;
1053
1054         $ref_item{'type'} = $type;
1055         $ref_item{'id'} = $ref_id;
1056         $ref_item{'epoch'} = 0;
1057         $ref_item{'age'} = "unknown";
1058         if ($type eq "tag") {
1059                 my %tag = parse_tag($ref_id);
1060                 $ref_item{'comment'} = $tag{'comment'};
1061                 if ($tag{'type'} eq "commit") {
1062                         my %co = parse_commit($tag{'object'});
1063                         $ref_item{'epoch'} = $co{'committer_epoch'};
1064                         $ref_item{'age'} = $co{'age_string'};
1065                 } elsif (defined($tag{'epoch'})) {
1066                         my $age = time - $tag{'epoch'};
1067                         $ref_item{'epoch'} = $tag{'epoch'};
1068                         $ref_item{'age'} = age_string($age);
1069                 }
1070                 $ref_item{'reftype'} = $tag{'type'};
1071                 $ref_item{'name'} = $tag{'name'};
1072                 $ref_item{'refid'} = $tag{'object'};
1073         } elsif ($type eq "commit"){
1074                 my %co = parse_commit($ref_id);
1075                 $ref_item{'reftype'} = "commit";
1076                 $ref_item{'name'} = $ref_file;
1077                 $ref_item{'title'} = $co{'title'};
1078                 $ref_item{'refid'} = $ref_id;
1079                 $ref_item{'epoch'} = $co{'committer_epoch'};
1080                 $ref_item{'age'} = $co{'age_string'};
1081         } else {
1082                 $ref_item{'reftype'} = $type;
1083                 $ref_item{'name'} = $ref_file;
1084                 $ref_item{'refid'} = $ref_id;
1085         }
1086
1087         return %ref_item;
1088 }
1089
1090 # parse line of git-diff-tree "raw" output
1091 sub parse_difftree_raw_line {
1092         my $line = shift;
1093         my %res;
1094
1095         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1096         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1097         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1098                 $res{'from_mode'} = $1;
1099                 $res{'to_mode'} = $2;
1100                 $res{'from_id'} = $3;
1101                 $res{'to_id'} = $4;
1102                 $res{'status'} = $5;
1103                 $res{'similarity'} = $6;
1104                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1105                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1106                 } else {
1107                         $res{'file'} = unquote($7);
1108                 }
1109         }
1110         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1111         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1112                 $res{'commit'} = $1;
1113         }
1114
1115         return wantarray ? %res : \%res;
1116 }
1117
1118 # parse line of git-ls-tree output
1119 sub parse_ls_tree_line ($;%) {
1120         my $line = shift;
1121         my %opts = @_;
1122         my %res;
1123
1124         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1125         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1126
1127         $res{'mode'} = $1;
1128         $res{'type'} = $2;
1129         $res{'hash'} = $3;
1130         if ($opts{'-z'}) {
1131                 $res{'name'} = $4;
1132         } else {
1133                 $res{'name'} = unquote($4);
1134         }
1135
1136         return wantarray ? %res : \%res;
1137 }
1138
1139 ## ......................................................................
1140 ## parse to array of hashes functions
1141
1142 sub git_get_refs_list {
1143         my $type = shift || "";
1144         my %refs;
1145         my @reflist;
1146
1147         my @refs;
1148         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1149                 or return;
1150         while (my $line = <$fd>) {
1151                 chomp $line;
1152                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1153                         if (defined $refs{$1}) {
1154                                 push @{$refs{$1}}, $2;
1155                         } else {
1156                                 $refs{$1} = [ $2 ];
1157                         }
1158
1159                         if (! $4) { # unpeeled, direct reference
1160                                 push @refs, { hash => $1, name => $3 }; # without type
1161                         } elsif ($3 eq $refs[-1]{'name'}) {
1162                                 # most likely a tag is followed by its peeled
1163                                 # (deref) one, and when that happens we know the
1164                                 # previous one was of type 'tag'.
1165                                 $refs[-1]{'type'} = "tag";
1166                         }
1167                 }
1168         }
1169         close $fd;
1170
1171         foreach my $ref (@refs) {
1172                 my $ref_file = $ref->{'name'};
1173                 my $ref_id   = $ref->{'hash'};
1174
1175                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1176                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1177
1178                 push @reflist, \%ref_item;
1179         }
1180         # sort refs by age
1181         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1182         return (\@reflist, \%refs);
1183 }
1184
1185 ## ----------------------------------------------------------------------
1186 ## filesystem-related functions
1187
1188 sub get_file_owner {
1189         my $path = shift;
1190
1191         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1192         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1193         if (!defined $gcos) {
1194                 return undef;
1195         }
1196         my $owner = $gcos;
1197         $owner =~ s/[,;].*$//;
1198         return decode("utf8", $owner, Encode::FB_DEFAULT);
1199 }
1200
1201 ## ......................................................................
1202 ## mimetype related functions
1203
1204 sub mimetype_guess_file {
1205         my $filename = shift;
1206         my $mimemap = shift;
1207         -r $mimemap or return undef;
1208
1209         my %mimemap;
1210         open(MIME, $mimemap) or return undef;
1211         while (<MIME>) {
1212                 next if m/^#/; # skip comments
1213                 my ($mime, $exts) = split(/\t+/);
1214                 if (defined $exts) {
1215                         my @exts = split(/\s+/, $exts);
1216                         foreach my $ext (@exts) {
1217                                 $mimemap{$ext} = $mime;
1218                         }
1219                 }
1220         }
1221         close(MIME);
1222
1223         $filename =~ /\.([^.]*)$/;
1224         return $mimemap{$1};
1225 }
1226
1227 sub mimetype_guess {
1228         my $filename = shift;
1229         my $mime;
1230         $filename =~ /\./ or return undef;
1231
1232         if ($mimetypes_file) {
1233                 my $file = $mimetypes_file;
1234                 if ($file !~ m!^/!) { # if it is relative path
1235                         # it is relative to project
1236                         $file = "$projectroot/$project/$file";
1237                 }
1238                 $mime = mimetype_guess_file($filename, $file);
1239         }
1240         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1241         return $mime;
1242 }
1243
1244 sub blob_mimetype {
1245         my $fd = shift;
1246         my $filename = shift;
1247
1248         if ($filename) {
1249                 my $mime = mimetype_guess($filename);
1250                 $mime and return $mime;
1251         }
1252
1253         # just in case
1254         return $default_blob_plain_mimetype unless $fd;
1255
1256         if (-T $fd) {
1257                 return 'text/plain' .
1258                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1259         } elsif (! $filename) {
1260                 return 'application/octet-stream';
1261         } elsif ($filename =~ m/\.png$/i) {
1262                 return 'image/png';
1263         } elsif ($filename =~ m/\.gif$/i) {
1264                 return 'image/gif';
1265         } elsif ($filename =~ m/\.jpe?g$/i) {
1266                 return 'image/jpeg';
1267         } else {
1268                 return 'application/octet-stream';
1269         }
1270 }
1271
1272 ## ======================================================================
1273 ## functions printing HTML: header, footer, error page
1274
1275 sub git_header_html {
1276         my $status = shift || "200 OK";
1277         my $expires = shift;
1278
1279         my $title = "$site_name git";
1280         if (defined $project) {
1281                 $title .= " - $project";
1282                 if (defined $action) {
1283                         $title .= "/$action";
1284                         if (defined $file_name) {
1285                                 $title .= " - $file_name";
1286                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1287                                         $title .= "/";
1288                                 }
1289                         }
1290                 }
1291         }
1292         my $content_type;
1293         # require explicit support from the UA if we are to send the page as
1294         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1295         # we have to do this because MSIE sometimes globs '*/*', pretending to
1296         # support xhtml+xml but choking when it gets what it asked for.
1297         if (defined $cgi->http('HTTP_ACCEPT') &&
1298             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1299             $cgi->Accept('application/xhtml+xml') != 0) {
1300                 $content_type = 'application/xhtml+xml';
1301         } else {
1302                 $content_type = 'text/html';
1303         }
1304         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1305                            -status=> $status, -expires => $expires);
1306         print <<EOF;
1307 <?xml version="1.0" encoding="utf-8"?>
1308 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1309 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1310 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1311 <!-- git core binaries version $git_version -->
1312 <head>
1313 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1314 <meta name="generator" content="gitweb/$version git/$git_version"/>
1315 <meta name="robots" content="index, nofollow"/>
1316 <title>$title</title>
1317 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1318 EOF
1319         if (defined $project) {
1320                 printf('<link rel="alternate" title="%s log" '.
1321                        'href="%s" type="application/rss+xml"/>'."\n",
1322                        esc_param($project), href(action=>"rss"));
1323         } else {
1324                 printf('<link rel="alternate" title="%s projects list" '.
1325                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1326                        $site_name, href(project=>undef, action=>"project_index"));
1327                 printf('<link rel="alternate" title="%s projects logs" '.
1328                        'href="%s" type="text/x-opml"/>'."\n",
1329                        $site_name, href(project=>undef, action=>"opml"));
1330         }
1331         if (defined $favicon) {
1332                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1333         }
1334
1335         print "</head>\n" .
1336               "<body>\n" .
1337               "<div class=\"page_header\">\n" .
1338               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1339               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1340               "</a>\n";
1341         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1342         if (defined $project) {
1343                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1344                 if (defined $action) {
1345                         print " / $action";
1346                 }
1347                 print "\n";
1348                 if (!defined $searchtext) {
1349                         $searchtext = "";
1350                 }
1351                 my $search_hash;
1352                 if (defined $hash_base) {
1353                         $search_hash = $hash_base;
1354                 } elsif (defined $hash) {
1355                         $search_hash = $hash;
1356                 } else {
1357                         $search_hash = "HEAD";
1358                 }
1359                 $cgi->param("a", "search");
1360                 $cgi->param("h", $search_hash);
1361                 print $cgi->startform(-method => "get", -action => $my_uri) .
1362                       "<div class=\"search\">\n" .
1363                       $cgi->hidden(-name => "p") . "\n" .
1364                       $cgi->hidden(-name => "a") . "\n" .
1365                       $cgi->hidden(-name => "h") . "\n" .
1366                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1367                       "</div>" .
1368                       $cgi->end_form() . "\n";
1369         }
1370         print "</div>\n";
1371 }
1372
1373 sub git_footer_html {
1374         print "<div class=\"page_footer\">\n";
1375         if (defined $project) {
1376                 my $descr = git_get_project_description($project);
1377                 if (defined $descr) {
1378                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1379                 }
1380                 print $cgi->a({-href => href(action=>"rss"),
1381                               -class => "rss_logo"}, "RSS") . "\n";
1382         } else {
1383                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1384                               -class => "rss_logo"}, "OPML") . " ";
1385                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1386                               -class => "rss_logo"}, "TXT") . "\n";
1387         }
1388         print "</div>\n" .
1389               "</body>\n" .
1390               "</html>";
1391 }
1392
1393 sub die_error {
1394         my $status = shift || "403 Forbidden";
1395         my $error = shift || "Malformed query, file missing or permission denied";
1396
1397         git_header_html($status);
1398         print <<EOF;
1399 <div class="page_body">
1400 <br /><br />
1401 $status - $error
1402 <br />
1403 </div>
1404 EOF
1405         git_footer_html();
1406         exit;
1407 }
1408
1409 ## ----------------------------------------------------------------------
1410 ## functions printing or outputting HTML: navigation
1411
1412 sub git_print_page_nav {
1413         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1414         $extra = '' if !defined $extra; # pager or formats
1415
1416         my @navs = qw(summary shortlog log commit commitdiff tree);
1417         if ($suppress) {
1418                 @navs = grep { $_ ne $suppress } @navs;
1419         }
1420
1421         my %arg = map { $_ => {action=>$_} } @navs;
1422         if (defined $head) {
1423                 for (qw(commit commitdiff)) {
1424                         $arg{$_}{hash} = $head;
1425                 }
1426                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1427                         for (qw(shortlog log)) {
1428                                 $arg{$_}{hash} = $head;
1429                         }
1430                 }
1431         }
1432         $arg{tree}{hash} = $treehead if defined $treehead;
1433         $arg{tree}{hash_base} = $treebase if defined $treebase;
1434
1435         print "<div class=\"page_nav\">\n" .
1436                 (join " | ",
1437                  map { $_ eq $current ?
1438                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1439                  } @navs);
1440         print "<br/>\n$extra<br/>\n" .
1441               "</div>\n";
1442 }
1443
1444 sub format_paging_nav {
1445         my ($action, $hash, $head, $page, $nrevs) = @_;
1446         my $paging_nav;
1447
1448
1449         if ($hash ne $head || $page) {
1450                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1451         } else {
1452                 $paging_nav .= "HEAD";
1453         }
1454
1455         if ($page > 0) {
1456                 $paging_nav .= " &sdot; " .
1457                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1458                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1459         } else {
1460                 $paging_nav .= " &sdot; prev";
1461         }
1462
1463         if ($nrevs >= (100 * ($page+1)-1)) {
1464                 $paging_nav .= " &sdot; " .
1465                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1466                                  -accesskey => "n", -title => "Alt-n"}, "next");
1467         } else {
1468                 $paging_nav .= " &sdot; next";
1469         }
1470
1471         return $paging_nav;
1472 }
1473
1474 ## ......................................................................
1475 ## functions printing or outputting HTML: div
1476
1477 sub git_print_header_div {
1478         my ($action, $title, $hash, $hash_base) = @_;
1479         my %args = ();
1480
1481         $args{action} = $action;
1482         $args{hash} = $hash if $hash;
1483         $args{hash_base} = $hash_base if $hash_base;
1484
1485         print "<div class=\"header\">\n" .
1486               $cgi->a({-href => href(%args), -class => "title"},
1487               $title ? $title : $action) .
1488               "\n</div>\n";
1489 }
1490
1491 #sub git_print_authorship (\%) {
1492 sub git_print_authorship {
1493         my $co = shift;
1494
1495         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1496         print "<div class=\"author_date\">" .
1497               esc_html($co->{'author_name'}) .
1498               " [$ad{'rfc2822'}";
1499         if ($ad{'hour_local'} < 6) {
1500                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1501                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1502         } else {
1503                 printf(" (%02d:%02d %s)",
1504                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1505         }
1506         print "]</div>\n";
1507 }
1508
1509 sub git_print_page_path {
1510         my $name = shift;
1511         my $type = shift;
1512         my $hb = shift;
1513
1514         if (!defined $name) {
1515                 print "<div class=\"page_path\">/</div>\n";
1516         } else {
1517                 my @dirname = split '/', $name;
1518                 my $basename = pop @dirname;
1519                 my $fullname = '';
1520
1521                 print "<div class=\"page_path\">";
1522                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1523                               -title => 'tree root'}, "[$project]");
1524                 print " / ";
1525                 foreach my $dir (@dirname) {
1526                         $fullname .= ($fullname ? '/' : '') . $dir;
1527                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1528                                                      hash_base=>$hb),
1529                                       -title => $fullname}, esc_html($dir));
1530                         print " / ";
1531                 }
1532                 if (defined $type && $type eq 'blob') {
1533                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1534                                                      hash_base=>$hb),
1535                                       -title => $name}, esc_html($basename));
1536                 } elsif (defined $type && $type eq 'tree') {
1537                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1538                                                      hash_base=>$hb),
1539                                       -title => $name}, esc_html($basename));
1540                 } else {
1541                         print esc_html($basename);
1542                 }
1543                 print "<br/></div>\n";
1544         }
1545 }
1546
1547 # sub git_print_log (\@;%) {
1548 sub git_print_log ($;%) {
1549         my $log = shift;
1550         my %opts = @_;
1551
1552         if ($opts{'-remove_title'}) {
1553                 # remove title, i.e. first line of log
1554                 shift @$log;
1555         }
1556         # remove leading empty lines
1557         while (defined $log->[0] && $log->[0] eq "") {
1558                 shift @$log;
1559         }
1560
1561         # print log
1562         my $signoff = 0;
1563         my $empty = 0;
1564         foreach my $line (@$log) {
1565                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1566                         $signoff = 1;
1567                         $empty = 0;
1568                         if (! $opts{'-remove_signoff'}) {
1569                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1570                                 next;
1571                         } else {
1572                                 # remove signoff lines
1573                                 next;
1574                         }
1575                 } else {
1576                         $signoff = 0;
1577                 }
1578
1579                 # print only one empty line
1580                 # do not print empty line after signoff
1581                 if ($line eq "") {
1582                         next if ($empty || $signoff);
1583                         $empty = 1;
1584                 } else {
1585                         $empty = 0;
1586                 }
1587
1588                 print format_log_line_html($line) . "<br/>\n";
1589         }
1590
1591         if ($opts{'-final_empty_line'}) {
1592                 # end with single empty line
1593                 print "<br/>\n" unless $empty;
1594         }
1595 }
1596
1597 sub git_print_simplified_log {
1598         my $log = shift;
1599         my $remove_title = shift;
1600
1601         git_print_log($log,
1602                 -final_empty_line=> 1,
1603                 -remove_title => $remove_title);
1604 }
1605
1606 # print tree entry (row of git_tree), but without encompassing <tr> element
1607 sub git_print_tree_entry {
1608         my ($t, $basedir, $hash_base, $have_blame) = @_;
1609
1610         my %base_key = ();
1611         $base_key{hash_base} = $hash_base if defined $hash_base;
1612
1613         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1614         if ($t->{'type'} eq "blob") {
1615                 print "<td class=\"list\">" .
1616                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1617                                              file_name=>"$basedir$t->{'name'}", %base_key),
1618                               -class => "list"}, esc_html($t->{'name'})) .
1619                       "</td>\n" .
1620                       "<td class=\"link\">" .
1621                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1622                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1623                               "blob");
1624                 if ($have_blame) {
1625                         print " | " .
1626                                 $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1627                                                        file_name=>"$basedir$t->{'name'}", %base_key)},
1628                                         "blame");
1629                 }
1630                 if (defined $hash_base) {
1631                         print " | " .
1632                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1633                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1634                                       "history");
1635                 }
1636                 print " | " .
1637                       $cgi->a({-href => href(action=>"blob_plain",
1638                                              hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1639                               "raw") .
1640                       "</td>\n";
1641
1642         } elsif ($t->{'type'} eq "tree") {
1643                 print "<td class=\"list\">" .
1644                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1645                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1646                               esc_html($t->{'name'})) .
1647                       "</td>\n" .
1648                       "<td class=\"link\">" .
1649                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1650                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1651                               "tree");
1652                 if (defined $hash_base) {
1653                         print " | " .
1654                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1655                                                      file_name=>"$basedir$t->{'name'}")},
1656                                       "history");
1657                 }
1658                 print "</td>\n";
1659         }
1660 }
1661
1662 ## ......................................................................
1663 ## functions printing large fragments of HTML
1664
1665 sub git_difftree_body {
1666         my ($difftree, $hash, $parent) = @_;
1667
1668         print "<div class=\"list_head\">\n";
1669         if ($#{$difftree} > 10) {
1670                 print(($#{$difftree} + 1) . " files changed:\n");
1671         }
1672         print "</div>\n";
1673
1674         print "<table class=\"diff_tree\">\n";
1675         my $alternate = 0;
1676         my $patchno = 0;
1677         foreach my $line (@{$difftree}) {
1678                 my %diff = parse_difftree_raw_line($line);
1679
1680                 if ($alternate) {
1681                         print "<tr class=\"dark\">\n";
1682                 } else {
1683                         print "<tr class=\"light\">\n";
1684                 }
1685                 $alternate ^= 1;
1686
1687                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1688                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1689                 if ($diff{'to_mode'} ne ('0' x 6)) {
1690                         $to_mode_oct = oct $diff{'to_mode'};
1691                         if (S_ISREG($to_mode_oct)) { # only for regular file
1692                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1693                         }
1694                         $to_file_type = file_type($diff{'to_mode'});
1695                 }
1696                 if ($diff{'from_mode'} ne ('0' x 6)) {
1697                         $from_mode_oct = oct $diff{'from_mode'};
1698                         if (S_ISREG($to_mode_oct)) { # only for regular file
1699                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1700                         }
1701                         $from_file_type = file_type($diff{'from_mode'});
1702                 }
1703
1704                 if ($diff{'status'} eq "A") { # created
1705                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1706                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1707                         $mode_chng   .= "]</span>";
1708                         print "<td>" .
1709                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1710                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1711                                       -class => "list"}, esc_html($diff{'file'})) .
1712                               "</td>\n" .
1713                               "<td>$mode_chng</td>\n" .
1714                               "<td class=\"link\">" .
1715                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1716                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1717                                       "blob");
1718                         if ($action eq 'commitdiff') {
1719                                 # link to patch
1720                                 $patchno++;
1721                                 print " | " .
1722                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1723                         }
1724                         print "</td>\n";
1725
1726                 } elsif ($diff{'status'} eq "D") { # deleted
1727                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1728                         print "<td>" .
1729                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1730                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1731                                        -class => "list"}, esc_html($diff{'file'})) .
1732                               "</td>\n" .
1733                               "<td>$mode_chng</td>\n" .
1734                               "<td class=\"link\">" .
1735                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1736                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1737                                       "blob") .
1738                               " | ";
1739                         if ($action eq 'commitdiff') {
1740                                 # link to patch
1741                                 $patchno++;
1742                                 print " | " .
1743                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1744                         }
1745                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1746                                                      file_name=>$diff{'file'})},
1747                                       "history") .
1748                               "</td>\n";
1749
1750                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1751                         my $mode_chnge = "";
1752                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1753                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1754                                 if ($from_file_type != $to_file_type) {
1755                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1756                                 }
1757                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1758                                         if ($from_mode_str && $to_mode_str) {
1759                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1760                                         } elsif ($to_mode_str) {
1761                                                 $mode_chnge .= " mode: $to_mode_str";
1762                                         }
1763                                 }
1764                                 $mode_chnge .= "]</span>\n";
1765                         }
1766                         print "<td>";
1767                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1768                                 print $cgi->a({-href => href(action=>"blobdiff",
1769                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1770                                                              hash_base=>$hash, hash_parent_base=>$parent,
1771                                                              file_name=>$diff{'file'}),
1772                                               -class => "list"}, esc_html($diff{'file'}));
1773                         } else { # only mode changed
1774                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1775                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1776                                               -class => "list"}, esc_html($diff{'file'}));
1777                         }
1778                         print "</td>\n" .
1779                               "<td>$mode_chnge</td>\n" .
1780                               "<td class=\"link\">" .
1781                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1782                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1783                                       "blob");
1784                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1785                                 if ($action eq 'commitdiff') {
1786                                         # link to patch
1787                                         $patchno++;
1788                                         print " | " .
1789                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1790                                 } else {
1791                                         print " | " .
1792                                                 $cgi->a({-href => href(action=>"blobdiff",
1793                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1794                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1795                                                                        file_name=>$diff{'file'})},
1796                                                         "diff");
1797                                 }
1798                         }
1799                         print " | " .
1800                                 $cgi->a({-href => href(action=>"history",
1801                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1802                                         "history");
1803                         print "</td>\n";
1804
1805                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1806                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1807                         my $nstatus = $status_name{$diff{'status'}};
1808                         my $mode_chng = "";
1809                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1810                                 # mode also for directories, so we cannot use $to_mode_str
1811                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1812                         }
1813                         print "<td>" .
1814                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1815                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1816                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1817                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1818                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1819                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1820                                       -class => "list"}, esc_html($diff{'from_file'})) .
1821                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1822                               "<td class=\"link\">" .
1823                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1824                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1825                                       "blob");
1826                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1827                                 if ($action eq 'commitdiff') {
1828                                         # link to patch
1829                                         $patchno++;
1830                                         print " | " .
1831                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1832                                 } else {
1833                                         print " | " .
1834                                                 $cgi->a({-href => href(action=>"blobdiff",
1835                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1836                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1837                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1838                                                         "diff");
1839                                 }
1840                         }
1841                         print "</td>\n";
1842
1843                 } # we should not encounter Unmerged (U) or Unknown (X) status
1844                 print "</tr>\n";
1845         }
1846         print "</table>\n";
1847 }
1848
1849 sub git_patchset_body {
1850         my ($fd, $difftree, $hash, $hash_parent) = @_;
1851
1852         my $patch_idx = 0;
1853         my $in_header = 0;
1854         my $patch_found = 0;
1855         my $diffinfo;
1856
1857         print "<div class=\"patchset\">\n";
1858
1859         LINE:
1860         while (my $patch_line = <$fd>) {
1861                 chomp $patch_line;
1862
1863                 if ($patch_line =~ m/^diff /) { # "git diff" header
1864                         # beginning of patch (in patchset)
1865                         if ($patch_found) {
1866                                 # close previous patch
1867                                 print "</div>\n"; # class="patch"
1868                         } else {
1869                                 # first patch in patchset
1870                                 $patch_found = 1;
1871                         }
1872                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1873
1874                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1875                                 $diffinfo = $difftree->[$patch_idx];
1876                         } else {
1877                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1878                         }
1879                         $patch_idx++;
1880
1881                         # for now, no extended header, hence we skip empty patches
1882                         # companion to  next LINE if $in_header;
1883                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1884                                 $in_header = 1;
1885                                 next LINE;
1886                         }
1887
1888                         if ($diffinfo->{'status'} eq "A") { # added
1889                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1890                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1891                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1892                                               $diffinfo->{'to_id'}) . "(new)" .
1893                                       "</div>\n"; # class="diff_info"
1894
1895                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1896                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1897                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1898                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1899                                               $diffinfo->{'from_id'}) . "(deleted)" .
1900                                       "</div>\n"; # class="diff_info"
1901
1902                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1903                                  $diffinfo->{'status'} eq "C" || # copied
1904                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1905                                 print "<div class=\"diff_info\">" .
1906                                       file_type($diffinfo->{'from_mode'}) . ":" .
1907                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1908                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1909                                               $diffinfo->{'from_id'}) .
1910                                       " -> " .
1911                                       file_type($diffinfo->{'to_mode'}) . ":" .
1912                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1913                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1914                                               $diffinfo->{'to_id'});
1915                                 print "</div>\n"; # class="diff_info"
1916
1917                         } else { # modified, mode changed, ...
1918                                 print "<div class=\"diff_info\">" .
1919                                       file_type($diffinfo->{'from_mode'}) . ":" .
1920                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1921                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1922                                               $diffinfo->{'from_id'}) .
1923                                       " -> " .
1924                                       file_type($diffinfo->{'to_mode'}) . ":" .
1925                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1926                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1927                                               $diffinfo->{'to_id'});
1928                                 print "</div>\n"; # class="diff_info"
1929                         }
1930
1931                         #print "<div class=\"diff extended_header\">\n";
1932                         $in_header = 1;
1933                         next LINE;
1934                 } # start of patch in patchset
1935
1936
1937                 if ($in_header && $patch_line =~ m/^---/) {
1938                         #print "</div>\n"; # class="diff extended_header"
1939                         $in_header = 0;
1940
1941                         my $file = $diffinfo->{'from_file'};
1942                         $file  ||= $diffinfo->{'file'};
1943                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1944                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1945                                         -class => "list"}, esc_html($file));
1946                         $patch_line =~ s|a/.*$|a/$file|g;
1947                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1948
1949                         $patch_line = <$fd>;
1950                         chomp $patch_line;
1951
1952                         #$patch_line =~ m/^+++/;
1953                         $file    = $diffinfo->{'to_file'};
1954                         $file  ||= $diffinfo->{'file'};
1955                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1956                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1957                                         -class => "list"}, esc_html($file));
1958                         $patch_line =~ s|b/.*|b/$file|g;
1959                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1960
1961                         next LINE;
1962                 }
1963                 next LINE if $in_header;
1964
1965                 print format_diff_line($patch_line);
1966         }
1967         print "</div>\n" if $patch_found; # class="patch"
1968
1969         print "</div>\n"; # class="patchset"
1970 }
1971
1972 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1973
1974 sub git_shortlog_body {
1975         # uses global variable $project
1976         my ($revlist, $from, $to, $refs, $extra) = @_;
1977
1978         $from = 0 unless defined $from;
1979         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1980
1981         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1982         my $alternate = 0;
1983         for (my $i = $from; $i <= $to; $i++) {
1984                 my $commit = $revlist->[$i];
1985                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1986                 my $ref = format_ref_marker($refs, $commit);
1987                 my %co = parse_commit($commit);
1988                 if ($alternate) {
1989                         print "<tr class=\"dark\">\n";
1990                 } else {
1991                         print "<tr class=\"light\">\n";
1992                 }
1993                 $alternate ^= 1;
1994                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1995                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1996                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1997                       "<td>";
1998                 print format_subject_html($co{'title'}, $co{'title_short'},
1999                                           href(action=>"commit", hash=>$commit), $ref);
2000                 print "</td>\n" .
2001                       "<td class=\"link\">" .
2002                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2003                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2004                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2005                 print "</td>\n" .
2006                       "</tr>\n";
2007         }
2008         if (defined $extra) {
2009                 print "<tr>\n" .
2010                       "<td colspan=\"4\">$extra</td>\n" .
2011                       "</tr>\n";
2012         }
2013         print "</table>\n";
2014 }
2015
2016 sub git_history_body {
2017         # Warning: assumes constant type (blob or tree) during history
2018         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2019
2020         $from = 0 unless defined $from;
2021         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2022
2023         print "<table class=\"history\" cellspacing=\"0\">\n";
2024         my $alternate = 0;
2025         for (my $i = $from; $i <= $to; $i++) {
2026                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2027                         next;
2028                 }
2029
2030                 my $commit = $1;
2031                 my %co = parse_commit($commit);
2032                 if (!%co) {
2033                         next;
2034                 }
2035
2036                 my $ref = format_ref_marker($refs, $commit);
2037
2038                 if ($alternate) {
2039                         print "<tr class=\"dark\">\n";
2040                 } else {
2041                         print "<tr class=\"light\">\n";
2042                 }
2043                 $alternate ^= 1;
2044                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2045                       # shortlog uses      chop_str($co{'author_name'}, 10)
2046                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2047                       "<td>";
2048                 # originally git_history used chop_str($co{'title'}, 50)
2049                 print format_subject_html($co{'title'}, $co{'title_short'},
2050                                           href(action=>"commit", hash=>$commit), $ref);
2051                 print "</td>\n" .
2052                       "<td class=\"link\">" .
2053                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2054                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2055                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
2056
2057                 if ($ftype eq 'blob') {
2058                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2059                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2060                         if (defined $blob_current && defined $blob_parent &&
2061                                         $blob_current ne $blob_parent) {
2062                                 print " | " .
2063                                         $cgi->a({-href => href(action=>"blobdiff",
2064                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2065                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2066                                                                file_name=>$file_name)},
2067                                                 "diff to current");
2068                         }
2069                 }
2070                 print "</td>\n" .
2071                       "</tr>\n";
2072         }
2073         if (defined $extra) {
2074                 print "<tr>\n" .
2075                       "<td colspan=\"4\">$extra</td>\n" .
2076                       "</tr>\n";
2077         }
2078         print "</table>\n";
2079 }
2080
2081 sub git_tags_body {
2082         # uses global variable $project
2083         my ($taglist, $from, $to, $extra) = @_;
2084         $from = 0 unless defined $from;
2085         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2086
2087         print "<table class=\"tags\" cellspacing=\"0\">\n";
2088         my $alternate = 0;
2089         for (my $i = $from; $i <= $to; $i++) {
2090                 my $entry = $taglist->[$i];
2091                 my %tag = %$entry;
2092                 my $comment_lines = $tag{'comment'};
2093                 my $comment = shift @$comment_lines;
2094                 my $comment_short;
2095                 if (defined $comment) {
2096                         $comment_short = chop_str($comment, 30, 5);
2097                 }
2098                 if ($alternate) {
2099                         print "<tr class=\"dark\">\n";
2100                 } else {
2101                         print "<tr class=\"light\">\n";
2102                 }
2103                 $alternate ^= 1;
2104                 print "<td><i>$tag{'age'}</i></td>\n" .
2105                       "<td>" .
2106                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2107                                -class => "list name"}, esc_html($tag{'name'})) .
2108                       "</td>\n" .
2109                       "<td>";
2110                 if (defined $comment) {
2111                         print format_subject_html($comment, $comment_short,
2112                                                   href(action=>"tag", hash=>$tag{'id'}));
2113                 }
2114                 print "</td>\n" .
2115                       "<td class=\"selflink\">";
2116                 if ($tag{'type'} eq "tag") {
2117                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2118                 } else {
2119                         print "&nbsp;";
2120                 }
2121                 print "</td>\n" .
2122                       "<td class=\"link\">" . " | " .
2123                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2124                 if ($tag{'reftype'} eq "commit") {
2125                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2126                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2127                 } elsif ($tag{'reftype'} eq "blob") {
2128                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2129                 }
2130                 print "</td>\n" .
2131                       "</tr>";
2132         }
2133         if (defined $extra) {
2134                 print "<tr>\n" .
2135                       "<td colspan=\"5\">$extra</td>\n" .
2136                       "</tr>\n";
2137         }
2138         print "</table>\n";
2139 }
2140
2141 sub git_heads_body {
2142         # uses global variable $project
2143         my ($headlist, $head, $from, $to, $extra) = @_;
2144         $from = 0 unless defined $from;
2145         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2146
2147         print "<table class=\"heads\" cellspacing=\"0\">\n";
2148         my $alternate = 0;
2149         for (my $i = $from; $i <= $to; $i++) {
2150                 my $entry = $headlist->[$i];
2151                 my %tag = %$entry;
2152                 my $curr = $tag{'id'} eq $head;
2153                 if ($alternate) {
2154                         print "<tr class=\"dark\">\n";
2155                 } else {
2156                         print "<tr class=\"light\">\n";
2157                 }
2158                 $alternate ^= 1;
2159                 print "<td><i>$tag{'age'}</i></td>\n" .
2160                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2161                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2162                                -class => "list name"},esc_html($tag{'name'})) .
2163                       "</td>\n" .
2164                       "<td class=\"link\">" .
2165                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2166                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2167                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2168                       "</td>\n" .
2169                       "</tr>";
2170         }
2171         if (defined $extra) {
2172                 print "<tr>\n" .
2173                       "<td colspan=\"3\">$extra</td>\n" .
2174                       "</tr>\n";
2175         }
2176         print "</table>\n";
2177 }
2178
2179 ## ======================================================================
2180 ## ======================================================================
2181 ## actions
2182
2183 sub git_project_list {
2184         my $order = $cgi->param('o');
2185         if (defined $order && $order !~ m/project|descr|owner|age/) {
2186                 die_error(undef, "Unknown order parameter");
2187         }
2188
2189         my @list = git_get_projects_list();
2190         my @projects;
2191         if (!@list) {
2192                 die_error(undef, "No projects found");
2193         }
2194         foreach my $pr (@list) {
2195                 my $head = git_get_head_hash($pr->{'path'});
2196                 if (!defined $head) {
2197                         next;
2198                 }
2199                 $git_dir = "$projectroot/$pr->{'path'}";
2200                 my %co = parse_commit($head);
2201                 if (!%co) {
2202                         next;
2203                 }
2204                 $pr->{'commit'} = \%co;
2205                 if (!defined $pr->{'descr'}) {
2206                         my $descr = git_get_project_description($pr->{'path'}) || "";
2207                         $pr->{'descr'} = chop_str($descr, 25, 5);
2208                 }
2209                 if (!defined $pr->{'owner'}) {
2210                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2211                 }
2212                 push @projects, $pr;
2213         }
2214
2215         git_header_html();
2216         if (-f $home_text) {
2217                 print "<div class=\"index_include\">\n";
2218                 open (my $fd, $home_text);
2219                 print <$fd>;
2220                 close $fd;
2221                 print "</div>\n";
2222         }
2223         print "<table class=\"project_list\">\n" .
2224               "<tr>\n";
2225         $order ||= "project";
2226         if ($order eq "project") {
2227                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2228                 print "<th>Project</th>\n";
2229         } else {
2230                 print "<th>" .
2231                       $cgi->a({-href => href(project=>undef, order=>'project'),
2232                                -class => "header"}, "Project") .
2233                       "</th>\n";
2234         }
2235         if ($order eq "descr") {
2236                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2237                 print "<th>Description</th>\n";
2238         } else {
2239                 print "<th>" .
2240                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2241                                -class => "header"}, "Description") .
2242                       "</th>\n";
2243         }
2244         if ($order eq "owner") {
2245                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2246                 print "<th>Owner</th>\n";
2247         } else {
2248                 print "<th>" .
2249                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2250                                -class => "header"}, "Owner") .
2251                       "</th>\n";
2252         }
2253         if ($order eq "age") {
2254                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2255                 print "<th>Last Change</th>\n";
2256         } else {
2257                 print "<th>" .
2258                       $cgi->a({-href => href(project=>undef, order=>'age'),
2259                                -class => "header"}, "Last Change") .
2260                       "</th>\n";
2261         }
2262         print "<th></th>\n" .
2263               "</tr>\n";
2264         my $alternate = 0;
2265         foreach my $pr (@projects) {
2266                 if ($alternate) {
2267                         print "<tr class=\"dark\">\n";
2268                 } else {
2269                         print "<tr class=\"light\">\n";
2270                 }
2271                 $alternate ^= 1;
2272                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2273                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2274                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2275                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2276                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2277                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2278                       "<td class=\"link\">" .
2279                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2280                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2281                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2282                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2283                       "</td>\n" .
2284                       "</tr>\n";
2285         }
2286         print "</table>\n";
2287         git_footer_html();
2288 }
2289
2290 sub git_project_index {
2291         my @projects = git_get_projects_list();
2292
2293         print $cgi->header(
2294                 -type => 'text/plain',
2295                 -charset => 'utf-8',
2296                 -content_disposition => qq(inline; filename="index.aux"));
2297
2298         foreach my $pr (@projects) {
2299                 if (!exists $pr->{'owner'}) {
2300                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2301                 }
2302
2303                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2304                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2305                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2306                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2307                 $path  =~ s/ /\+/g;
2308                 $owner =~ s/ /\+/g;
2309
2310                 print "$path $owner\n";
2311         }
2312 }
2313
2314 sub git_summary {
2315         my $descr = git_get_project_description($project) || "none";
2316         my $head = git_get_head_hash($project);
2317         my %co = parse_commit($head);
2318         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2319
2320         my $owner = git_get_project_owner($project);
2321
2322         my ($reflist, $refs) = git_get_refs_list();
2323
2324         my @taglist;
2325         my @headlist;
2326         foreach my $ref (@$reflist) {
2327                 if ($ref->{'name'} =~ s!^heads/!!) {
2328                         push @headlist, $ref;
2329                 } else {
2330                         $ref->{'name'} =~ s!^tags/!!;
2331                         push @taglist, $ref;
2332                 }
2333         }
2334
2335         git_header_html();
2336         git_print_page_nav('summary','', $head);
2337
2338         print "<div class=\"title\">&nbsp;</div>\n";
2339         print "<table cellspacing=\"0\">\n" .
2340               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2341               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2342               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2343         # use per project git URL list in $projectroot/$project/cloneurl
2344         # or make project git URL from git base URL and project name
2345         my $url_tag = "URL";
2346         my @url_list = git_get_project_url_list($project);
2347         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2348         foreach my $git_url (@url_list) {
2349                 next unless $git_url;
2350                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2351                 $url_tag = "";
2352         }
2353         print "</table>\n";
2354
2355         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2356                 git_get_head_hash($project)
2357                 or die_error(undef, "Open git-rev-list failed");
2358         my @revlist = map { chomp; $_ } <$fd>;
2359         close $fd;
2360         git_print_header_div('shortlog');
2361         git_shortlog_body(\@revlist, 0, 15, $refs,
2362                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2363
2364         if (@taglist) {
2365                 git_print_header_div('tags');
2366                 git_tags_body(\@taglist, 0, 15,
2367                               $cgi->a({-href => href(action=>"tags")}, "..."));
2368         }
2369
2370         if (@headlist) {
2371                 git_print_header_div('heads');
2372                 git_heads_body(\@headlist, $head, 0, 15,
2373                                $cgi->a({-href => href(action=>"heads")}, "..."));
2374         }
2375
2376         git_footer_html();
2377 }
2378
2379 sub git_tag {
2380         my $head = git_get_head_hash($project);
2381         git_header_html();
2382         git_print_page_nav('','', $head,undef,$head);
2383         my %tag = parse_tag($hash);
2384         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2385         print "<div class=\"title_text\">\n" .
2386               "<table cellspacing=\"0\">\n" .
2387               "<tr>\n" .
2388               "<td>object</td>\n" .
2389               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2390                                $tag{'object'}) . "</td>\n" .
2391               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2392                                               $tag{'type'}) . "</td>\n" .
2393               "</tr>\n";
2394         if (defined($tag{'author'})) {
2395                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2396                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2397                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2398                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2399                         "</td></tr>\n";
2400         }
2401         print "</table>\n\n" .
2402               "</div>\n";
2403         print "<div class=\"page_body\">";
2404         my $comment = $tag{'comment'};
2405         foreach my $line (@$comment) {
2406                 print esc_html($line) . "<br/>\n";
2407         }
2408         print "</div>\n";
2409         git_footer_html();
2410 }
2411
2412 sub git_blame2 {
2413         my $fd;
2414         my $ftype;
2415
2416         my ($have_blame) = gitweb_check_feature('blame');
2417         if (!$have_blame) {
2418                 die_error('403 Permission denied', "Permission denied");
2419         }
2420         die_error('404 Not Found', "File name not defined") if (!$file_name);
2421         $hash_base ||= git_get_head_hash($project);
2422         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2423         my %co = parse_commit($hash_base)
2424                 or die_error(undef, "Reading commit failed");
2425         if (!defined $hash) {
2426                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2427                         or die_error(undef, "Error looking up file");
2428         }
2429         $ftype = git_get_type($hash);
2430         if ($ftype !~ "blob") {
2431                 die_error("400 Bad Request", "Object is not a blob");
2432         }
2433         open ($fd, "-|", git_cmd(), "blame", '-l', $file_name, $hash_base)
2434                 or die_error(undef, "Open git-blame failed");
2435         git_header_html();
2436         my $formats_nav =
2437                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2438                         "blob") .
2439                 " | " .
2440                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2441                         "history") .
2442                 " | " .
2443                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2444                         "HEAD");
2445         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2446         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2447         git_print_page_path($file_name, $ftype, $hash_base);
2448         my @rev_color = (qw(light2 dark2));
2449         my $num_colors = scalar(@rev_color);
2450         my $current_color = 0;
2451         my $last_rev;
2452         print <<HTML;
2453 <div class="page_body">
2454 <table class="blame">
2455 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2456 HTML
2457         while (<$fd>) {
2458                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2459                 my $full_rev = $1;
2460                 my $rev = substr($full_rev, 0, 8);
2461                 my $lineno = $2;
2462                 my $data = $3;
2463
2464                 if (!defined $last_rev) {
2465                         $last_rev = $full_rev;
2466                 } elsif ($last_rev ne $full_rev) {
2467                         $last_rev = $full_rev;
2468                         $current_color = ++$current_color % $num_colors;
2469                 }
2470                 print "<tr class=\"$rev_color[$current_color]\">\n";
2471                 print "<td class=\"sha1\">" .
2472                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2473                                 esc_html($rev)) . "</td>\n";
2474                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2475                       esc_html($lineno) . "</a></td>\n";
2476                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2477                 print "</tr>\n";
2478         }
2479         print "</table>\n";
2480         print "</div>";
2481         close $fd
2482                 or print "Reading blob failed\n";
2483         git_footer_html();
2484 }
2485
2486 sub git_blame {
2487         my $fd;
2488
2489         my ($have_blame) = gitweb_check_feature('blame');
2490         if (!$have_blame) {
2491                 die_error('403 Permission denied', "Permission denied");
2492         }
2493         die_error('404 Not Found', "File name not defined") if (!$file_name);
2494         $hash_base ||= git_get_head_hash($project);
2495         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2496         my %co = parse_commit($hash_base)
2497                 or die_error(undef, "Reading commit failed");
2498         if (!defined $hash) {
2499                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2500                         or die_error(undef, "Error lookup file");
2501         }
2502         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2503                 or die_error(undef, "Open git-annotate failed");
2504         git_header_html();
2505         my $formats_nav =
2506                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2507                         "blob") .
2508                 " | " .
2509                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2510                         "history") .
2511                 " | " .
2512                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2513                         "HEAD");
2514         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2515         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2516         git_print_page_path($file_name, 'blob', $hash_base);
2517         print "<div class=\"page_body\">\n";
2518         print <<HTML;
2519 <table class="blame">
2520   <tr>
2521     <th>Commit</th>
2522     <th>Age</th>
2523     <th>Author</th>
2524     <th>Line</th>
2525     <th>Data</th>
2526   </tr>
2527 HTML
2528         my @line_class = (qw(light dark));
2529         my $line_class_len = scalar (@line_class);
2530         my $line_class_num = $#line_class;
2531         while (my $line = <$fd>) {
2532                 my $long_rev;
2533                 my $short_rev;
2534                 my $author;
2535                 my $time;
2536                 my $lineno;
2537                 my $data;
2538                 my $age;
2539                 my $age_str;
2540                 my $age_class;
2541
2542                 chomp $line;
2543                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2544
2545                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2546                         $long_rev = $1;
2547                         $author   = $2;
2548                         $time     = $3;
2549                         $lineno   = $4;
2550                         $data     = $5;
2551                 } else {
2552                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2553                         next;
2554                 }
2555                 $short_rev  = substr ($long_rev, 0, 8);
2556                 $age        = time () - $time;
2557                 $age_str    = age_string ($age);
2558                 $age_str    =~ s/ /&nbsp;/g;
2559                 $age_class  = age_class($age);
2560                 $author     = esc_html ($author);
2561                 $author     =~ s/ /&nbsp;/g;
2562
2563                 $data = untabify($data);
2564                 $data = esc_html ($data);
2565
2566                 print <<HTML;
2567   <tr class="$line_class[$line_class_num]">
2568     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2569     <td class="$age_class">$age_str</td>
2570     <td>$author</td>
2571     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2572     <td class="pre">$data</td>
2573   </tr>
2574 HTML
2575         } # while (my $line = <$fd>)
2576         print "</table>\n\n";
2577         close $fd
2578                 or print "Reading blob failed.\n";
2579         print "</div>";
2580         git_footer_html();
2581 }
2582
2583 sub git_tags {
2584         my $head = git_get_head_hash($project);
2585         git_header_html();
2586         git_print_page_nav('','', $head,undef,$head);
2587         git_print_header_div('summary', $project);
2588
2589         my ($taglist) = git_get_refs_list("tags");
2590         if (@$taglist) {
2591                 git_tags_body($taglist);
2592         }
2593         git_footer_html();
2594 }
2595
2596 sub git_heads {
2597         my $head = git_get_head_hash($project);
2598         git_header_html();
2599         git_print_page_nav('','', $head,undef,$head);
2600         git_print_header_div('summary', $project);
2601
2602         my ($headlist) = git_get_refs_list("heads");
2603         if (@$headlist) {
2604                 git_heads_body($headlist, $head);
2605         }
2606         git_footer_html();
2607 }
2608
2609 sub git_blob_plain {
2610         my $expires;
2611
2612         if (!defined $hash) {
2613                 if (defined $file_name) {
2614                         my $base = $hash_base || git_get_head_hash($project);
2615                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2616                                 or die_error(undef, "Error lookup file");
2617                 } else {
2618                         die_error(undef, "No file name defined");
2619                 }
2620         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2621                 # blobs defined by non-textual hash id's can be cached
2622                 $expires = "+1d";
2623         }
2624
2625         my $type = shift;
2626         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2627                 or die_error(undef, "Couldn't cat $file_name, $hash");
2628
2629         $type ||= blob_mimetype($fd, $file_name);
2630
2631         # save as filename, even when no $file_name is given
2632         my $save_as = "$hash";
2633         if (defined $file_name) {
2634                 $save_as = $file_name;
2635         } elsif ($type =~ m/^text\//) {
2636                 $save_as .= '.txt';
2637         }
2638
2639         print $cgi->header(
2640                 -type => "$type",
2641                 -expires=>$expires,
2642                 -content_disposition => "inline; filename=\"$save_as\"");
2643         undef $/;
2644         binmode STDOUT, ':raw';
2645         print <$fd>;
2646         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2647         $/ = "\n";
2648         close $fd;
2649 }
2650
2651 sub git_blob {
2652         my $expires;
2653
2654         if (!defined $hash) {
2655                 if (defined $file_name) {
2656                         my $base = $hash_base || git_get_head_hash($project);
2657                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2658                                 or die_error(undef, "Error lookup file");
2659                 } else {
2660                         die_error(undef, "No file name defined");
2661                 }
2662         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2663                 # blobs defined by non-textual hash id's can be cached
2664                 $expires = "+1d";
2665         }
2666
2667         my ($have_blame) = gitweb_check_feature('blame');
2668         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2669                 or die_error(undef, "Couldn't cat $file_name, $hash");
2670         my $mimetype = blob_mimetype($fd, $file_name);
2671         if ($mimetype !~ m/^text\//) {
2672                 close $fd;
2673                 return git_blob_plain($mimetype);
2674         }
2675         git_header_html(undef, $expires);
2676         my $formats_nav = '';
2677         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2678                 if (defined $file_name) {
2679                         if ($have_blame) {
2680                                 $formats_nav .=
2681                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2682                                                                hash=>$hash, file_name=>$file_name)},
2683                                                 "blame") .
2684                                         " | ";
2685                         }
2686                         $formats_nav .=
2687                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2688                                                        hash=>$hash, file_name=>$file_name)},
2689                                         "history") .
2690                                 " | " .
2691                                 $cgi->a({-href => href(action=>"blob_plain",
2692                                                        hash=>$hash, file_name=>$file_name)},
2693                                         "raw") .
2694                                 " | " .
2695                                 $cgi->a({-href => href(action=>"blob",
2696                                                        hash_base=>"HEAD", file_name=>$file_name)},
2697                                         "HEAD");
2698                 } else {
2699                         $formats_nav .=
2700                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2701                 }
2702                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2703                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2704         } else {
2705                 print "<div class=\"page_nav\">\n" .
2706                       "<br/><br/></div>\n" .
2707                       "<div class=\"title\">$hash</div>\n";
2708         }
2709         git_print_page_path($file_name, "blob", $hash_base);
2710         print "<div class=\"page_body\">\n";
2711         my $nr;
2712         while (my $line = <$fd>) {
2713                 chomp $line;
2714                 $nr++;
2715                 $line = untabify($line);
2716                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2717                        $nr, $nr, $nr, esc_html($line);
2718         }
2719         close $fd
2720                 or print "Reading blob failed.\n";
2721         print "</div>";
2722         git_footer_html();
2723 }
2724
2725 sub git_tree {
2726         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2727         my $have_snapshot = (defined $ctype && defined $suffix);
2728
2729         if (!defined $hash) {
2730                 $hash = git_get_head_hash($project);
2731                 if (defined $file_name) {
2732                         my $base = $hash_base || $hash;
2733                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2734                 }
2735                 if (!defined $hash_base) {
2736                         $hash_base = $hash;
2737                 }
2738         }
2739         $/ = "\0";
2740         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2741                 or die_error(undef, "Open git-ls-tree failed");
2742         my @entries = map { chomp; $_ } <$fd>;
2743         close $fd or die_error(undef, "Reading tree failed");
2744         $/ = "\n";
2745
2746         my $refs = git_get_references();
2747         my $ref = format_ref_marker($refs, $hash_base);
2748         git_header_html();
2749         my $base = "";
2750         my ($have_blame) = gitweb_check_feature('blame');
2751         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2752                 my @views_nav = ();
2753                 if (defined $file_name) {
2754                         push @views_nav,
2755                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2756                                                        hash=>$hash, file_name=>$file_name)},
2757                                         "history"),
2758                                 $cgi->a({-href => href(action=>"tree",
2759                                                        hash_base=>"HEAD", file_name=>$file_name)},
2760                                         "HEAD"),
2761                 }
2762                 if ($have_snapshot) {
2763                         # FIXME: Should be available when we have no hash base as well.
2764                         push @views_nav,
2765                                 $cgi->a({-href => href(action=>"snapshot")},
2766                                         "snapshot");
2767                 }
2768                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2769                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2770         } else {
2771                 undef $hash_base;
2772                 print "<div class=\"page_nav\">\n";
2773                 print "<br/><br/></div>\n";
2774                 print "<div class=\"title\">$hash</div>\n";
2775         }
2776         if (defined $file_name) {
2777                 $base = esc_html("$file_name/");
2778         }
2779         git_print_page_path($file_name, 'tree', $hash_base);
2780         print "<div class=\"page_body\">\n";
2781         print "<table cellspacing=\"0\">\n";
2782         my $alternate = 0;
2783         foreach my $line (@entries) {
2784                 my %t = parse_ls_tree_line($line, -z => 1);
2785
2786                 if ($alternate) {
2787                         print "<tr class=\"dark\">\n";
2788                 } else {
2789                         print "<tr class=\"light\">\n";
2790                 }
2791                 $alternate ^= 1;
2792
2793                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2794
2795                 print "</tr>\n";
2796         }
2797         print "</table>\n" .
2798               "</div>";
2799         git_footer_html();
2800 }
2801
2802 sub git_snapshot {
2803
2804         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2805         my $have_snapshot = (defined $ctype && defined $suffix);
2806         if (!$have_snapshot) {
2807                 die_error('403 Permission denied', "Permission denied");
2808         }
2809
2810         if (!defined $hash) {
2811                 $hash = git_get_head_hash($project);
2812         }
2813
2814         my $filename = basename($project) . "-$hash.tar.$suffix";
2815
2816         print $cgi->header(-type => 'application/x-tar',
2817                            -content_encoding => $ctype,
2818                            -content_disposition => "inline; filename=\"$filename\"",
2819                            -status => '200 OK');
2820
2821         my $git_command = git_cmd_str();
2822         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2823                 die_error(undef, "Execute git-tar-tree failed.");
2824         binmode STDOUT, ':raw';
2825         print <$fd>;
2826         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2827         close $fd;
2828
2829 }
2830
2831 sub git_log {
2832         my $head = git_get_head_hash($project);
2833         if (!defined $hash) {
2834                 $hash = $head;
2835         }
2836         if (!defined $page) {
2837                 $page = 0;
2838         }
2839         my $refs = git_get_references();
2840
2841         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2842         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2843                 or die_error(undef, "Open git-rev-list failed");
2844         my @revlist = map { chomp; $_ } <$fd>;
2845         close $fd;
2846
2847         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2848
2849         git_header_html();
2850         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2851
2852         if (!@revlist) {
2853                 my %co = parse_commit($hash);
2854
2855                 git_print_header_div('summary', $project);
2856                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2857         }
2858         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2859                 my $commit = $revlist[$i];
2860                 my $ref = format_ref_marker($refs, $commit);
2861                 my %co = parse_commit($commit);
2862                 next if !%co;
2863                 my %ad = parse_date($co{'author_epoch'});
2864                 git_print_header_div('commit',
2865                                "<span class=\"age\">$co{'age_string'}</span>" .
2866                                esc_html($co{'title'}) . $ref,
2867                                $commit);
2868                 print "<div class=\"title_text\">\n" .
2869                       "<div class=\"log_link\">\n" .
2870                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2871                       " | " .
2872                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2873                       " | " .
2874                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2875                       "<br/>\n" .
2876                       "</div>\n" .
2877                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2878                       "</div>\n";
2879
2880                 print "<div class=\"log_body\">\n";
2881                 git_print_simplified_log($co{'comment'});
2882                 print "</div>\n";
2883         }
2884         git_footer_html();
2885 }
2886
2887 sub git_commit {
2888         my %co = parse_commit($hash);
2889         if (!%co) {
2890                 die_error(undef, "Unknown commit object");
2891         }
2892         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2893         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2894
2895         my $parent = $co{'parent'};
2896         if (!defined $parent) {
2897                 $parent = "--root";
2898         }
2899         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2900                 or die_error(undef, "Open git-diff-tree failed");
2901         my @difftree = map { chomp; $_ } <$fd>;
2902         close $fd or die_error(undef, "Reading git-diff-tree failed");
2903
2904         # non-textual hash id's can be cached
2905         my $expires;
2906         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2907                 $expires = "+1d";
2908         }
2909         my $refs = git_get_references();
2910         my $ref = format_ref_marker($refs, $co{'id'});
2911
2912         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2913         my $have_snapshot = (defined $ctype && defined $suffix);
2914
2915         my @views_nav = ();
2916         if (defined $file_name && defined $co{'parent'}) {
2917                 my $parent = $co{'parent'};
2918                 push @views_nav,
2919                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2920                                 "blame");
2921         }
2922         if (defined $co{'parent'}) {
2923                 push @views_nav,
2924                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash)}, "shortlog"),
2925                         $cgi->a({-href => href(action=>"log", hash=>$hash)}, "log");
2926         }
2927         git_header_html(undef, $expires);
2928         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2929                            $hash, $co{'tree'}, $hash,
2930                            join (' | ', @views_nav));
2931
2932         if (defined $co{'parent'}) {
2933                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2934         } else {
2935                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2936         }
2937         print "<div class=\"title_text\">\n" .
2938               "<table cellspacing=\"0\">\n";
2939         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2940               "<tr>" .
2941               "<td></td><td> $ad{'rfc2822'}";
2942         if ($ad{'hour_local'} < 6) {
2943                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2944                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2945         } else {
2946                 printf(" (%02d:%02d %s)",
2947                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2948         }
2949         print "</td>" .
2950               "</tr>\n";
2951         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2952         print "<tr><td></td><td> $cd{'rfc2822'}" .
2953               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2954               "</td></tr>\n";
2955         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2956         print "<tr>" .
2957               "<td>tree</td>" .
2958               "<td class=\"sha1\">" .
2959               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2960                        class => "list"}, $co{'tree'}) .
2961               "</td>" .
2962               "<td class=\"link\">" .
2963               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2964                       "tree");
2965         if ($have_snapshot) {
2966                 print " | " .
2967                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2968         }
2969         print "</td>" .
2970               "</tr>\n";
2971         my $parents = $co{'parents'};
2972         foreach my $par (@$parents) {
2973                 print "<tr>" .
2974                       "<td>parent</td>" .
2975                       "<td class=\"sha1\">" .
2976                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2977                                class => "list"}, $par) .
2978                       "</td>" .
2979                       "<td class=\"link\">" .
2980                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2981                       " | " .
2982                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2983                       "</td>" .
2984                       "</tr>\n";
2985         }
2986         print "</table>".
2987               "</div>\n";
2988
2989         print "<div class=\"page_body\">\n";
2990         git_print_log($co{'comment'});
2991         print "</div>\n";
2992
2993         git_difftree_body(\@difftree, $hash, $parent);
2994
2995         git_footer_html();
2996 }
2997
2998 sub git_blobdiff {
2999         my $format = shift || 'html';
3000
3001         my $fd;
3002         my @difftree;
3003         my %diffinfo;
3004         my $expires;
3005
3006         # preparing $fd and %diffinfo for git_patchset_body
3007         # new style URI
3008         if (defined $hash_base && defined $hash_parent_base) {
3009                 if (defined $file_name) {
3010                         # read raw output
3011                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3012                                 "--", $file_name
3013                                 or die_error(undef, "Open git-diff-tree failed");
3014                         @difftree = map { chomp; $_ } <$fd>;
3015                         close $fd
3016                                 or die_error(undef, "Reading git-diff-tree failed");
3017                         @difftree
3018                                 or die_error('404 Not Found', "Blob diff not found");
3019
3020                 } elsif (defined $hash &&
3021                          $hash =~ /[0-9a-fA-F]{40}/) {
3022                         # try to find filename from $hash
3023
3024                         # read filtered raw output
3025                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3026                                 or die_error(undef, "Open git-diff-tree failed");
3027                         @difftree =
3028                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3029                                 # $hash == to_id
3030                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3031                                 map { chomp; $_ } <$fd>;
3032                         close $fd
3033                                 or die_error(undef, "Reading git-diff-tree failed");
3034                         @difftree
3035                                 or die_error('404 Not Found', "Blob diff not found");
3036
3037                 } else {
3038                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3039                 }
3040
3041                 if (@difftree > 1) {
3042                         die_error('404 Not Found', "Ambiguous blob diff specification");
3043                 }
3044
3045                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3046                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3047                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3048
3049                 $hash_parent ||= $diffinfo{'from_id'};
3050                 $hash        ||= $diffinfo{'to_id'};
3051
3052                 # non-textual hash id's can be cached
3053                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3054                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3055                         $expires = '+1d';
3056                 }
3057
3058                 # open patch output
3059                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3060                         '-p', $hash_parent_base, $hash_base,
3061                         "--", $file_name
3062                         or die_error(undef, "Open git-diff-tree failed");
3063         }
3064
3065         # old/legacy style URI
3066         if (!%diffinfo && # if new style URI failed
3067             defined $hash && defined $hash_parent) {
3068                 # fake git-diff-tree raw output
3069                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3070                 $diffinfo{'from_id'} = $hash_parent;
3071                 $diffinfo{'to_id'}   = $hash;
3072                 if (defined $file_name) {
3073                         if (defined $file_parent) {
3074                                 $diffinfo{'status'} = '2';
3075                                 $diffinfo{'from_file'} = $file_parent;
3076                                 $diffinfo{'to_file'}   = $file_name;
3077                         } else { # assume not renamed
3078                                 $diffinfo{'status'} = '1';
3079                                 $diffinfo{'from_file'} = $file_name;
3080                                 $diffinfo{'to_file'}   = $file_name;
3081                         }
3082                 } else { # no filename given
3083                         $diffinfo{'status'} = '2';
3084                         $diffinfo{'from_file'} = $hash_parent;
3085                         $diffinfo{'to_file'}   = $hash;
3086                 }
3087
3088                 # non-textual hash id's can be cached
3089                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3090                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3091                         $expires = '+1d';
3092                 }
3093
3094                 # open patch output
3095                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3096                         or die_error(undef, "Open git-diff failed");
3097         } else  {
3098                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3099                         unless %diffinfo;
3100         }
3101
3102         # header
3103         if ($format eq 'html') {
3104                 my $formats_nav =
3105                         $cgi->a({-href => href(action=>"blobdiff_plain",
3106                                                hash=>$hash, hash_parent=>$hash_parent,
3107                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3108                                                file_name=>$file_name, file_parent=>$file_parent)},
3109                                 "raw");
3110                 git_header_html(undef, $expires);
3111                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3112                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3113                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3114                 } else {
3115                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3116                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3117                 }
3118                 if (defined $file_name) {
3119                         git_print_page_path($file_name, "blob", $hash_base);
3120                 } else {
3121                         print "<div class=\"page_path\"></div>\n";
3122                 }
3123
3124         } elsif ($format eq 'plain') {
3125                 print $cgi->header(
3126                         -type => 'text/plain',
3127                         -charset => 'utf-8',
3128                         -expires => $expires,
3129                         -content_disposition => qq(inline; filename="${file_name}.patch"));
3130
3131                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3132
3133         } else {
3134                 die_error(undef, "Unknown blobdiff format");
3135         }
3136
3137         # patch
3138         if ($format eq 'html') {
3139                 print "<div class=\"page_body\">\n";
3140
3141                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3142                 close $fd;
3143
3144                 print "</div>\n"; # class="page_body"
3145                 git_footer_html();
3146
3147         } else {
3148                 while (my $line = <$fd>) {
3149                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
3150                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
3151
3152                         print $line;
3153
3154                         last if $line =~ m!^\+\+\+!;
3155                 }
3156                 local $/ = undef;
3157                 print <$fd>;
3158                 close $fd;
3159         }
3160 }
3161
3162 sub git_blobdiff_plain {
3163         git_blobdiff('plain');
3164 }
3165
3166 sub git_commitdiff {
3167         my $format = shift || 'html';
3168         my %co = parse_commit($hash);
3169         if (!%co) {
3170                 die_error(undef, "Unknown commit object");
3171         }
3172         if (!defined $hash_parent) {
3173                 $hash_parent = $co{'parent'} || '--root';
3174         }
3175
3176         # read commitdiff
3177         my $fd;
3178         my @difftree;
3179         if ($format eq 'html') {
3180                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3181                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3182                         or die_error(undef, "Open git-diff-tree failed");
3183
3184                 while (chomp(my $line = <$fd>)) {
3185                         # empty line ends raw part of diff-tree output
3186                         last unless $line;
3187                         push @difftree, $line;
3188                 }
3189
3190         } elsif ($format eq 'plain') {
3191                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3192                         '-p', $hash_parent, $hash
3193                         or die_error(undef, "Open git-diff-tree failed");
3194
3195         } else {
3196                 die_error(undef, "Unknown commitdiff format");
3197         }
3198
3199         # non-textual hash id's can be cached
3200         my $expires;
3201         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3202                 $expires = "+1d";
3203         }
3204
3205         # write commit message
3206         if ($format eq 'html') {
3207                 my $refs = git_get_references();
3208                 my $ref = format_ref_marker($refs, $co{'id'});
3209                 my $formats_nav =
3210                         $cgi->a({-href => href(action=>"commitdiff_plain",
3211                                                hash=>$hash, hash_parent=>$hash_parent)},
3212                                 "raw");
3213
3214                 git_header_html(undef, $expires);
3215                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3216                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3217                 git_print_authorship(\%co);
3218                 print "<div class=\"page_body\">\n";
3219                 print "<div class=\"log\">\n";
3220                 git_print_simplified_log($co{'comment'}, 1); # skip title
3221                 print "</div>\n"; # class="log"
3222
3223         } elsif ($format eq 'plain') {
3224                 my $refs = git_get_references("tags");
3225                 my $tagname = git_get_rev_name_tags($hash);
3226                 my $filename = basename($project) . "-$hash.patch";
3227
3228                 print $cgi->header(
3229                         -type => 'text/plain',
3230                         -charset => 'utf-8',
3231                         -expires => $expires,
3232                         -content_disposition => qq(inline; filename="$filename"));
3233                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3234                 print <<TEXT;
3235 From: $co{'author'}
3236 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3237 Subject: $co{'title'}
3238 TEXT
3239                 print "X-Git-Tag: $tagname\n" if $tagname;
3240                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3241
3242                 foreach my $line (@{$co{'comment'}}) {
3243                         print "$line\n";
3244                 }
3245                 print "---\n\n";
3246         }
3247
3248         # write patch
3249         if ($format eq 'html') {
3250                 git_difftree_body(\@difftree, $hash, $hash_parent);
3251                 print "<br/>\n";
3252
3253                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3254                 close $fd;
3255                 print "</div>\n"; # class="page_body"
3256                 git_footer_html();
3257
3258         } elsif ($format eq 'plain') {
3259                 local $/ = undef;
3260                 print <$fd>;
3261                 close $fd
3262                         or print "Reading git-diff-tree failed\n";
3263         }
3264 }
3265
3266 sub git_commitdiff_plain {
3267         git_commitdiff('plain');
3268 }
3269
3270 sub git_history {
3271         if (!defined $hash_base) {
3272                 $hash_base = git_get_head_hash($project);
3273         }
3274         if (!defined $page) {
3275                 $page = 0;
3276         }
3277         my $ftype;
3278         my %co = parse_commit($hash_base);
3279         if (!%co) {
3280                 die_error(undef, "Unknown commit object");
3281         }
3282
3283         my $refs = git_get_references();
3284         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3285
3286         if (!defined $hash && defined $file_name) {
3287                 $hash = git_get_hash_by_path($hash_base, $file_name);
3288         }
3289         if (defined $hash) {
3290                 $ftype = git_get_type($hash);
3291         }
3292
3293         open my $fd, "-|",
3294                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3295                         or die_error(undef, "Open git-rev-list-failed");
3296         my @revlist = map { chomp; $_ } <$fd>;
3297         close $fd
3298                 or die_error(undef, "Reading git-rev-list failed");
3299
3300         my $paging_nav = '';
3301         if ($page > 0) {
3302                 $paging_nav .=
3303                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3304                                                file_name=>$file_name)},
3305                                 "first");
3306                 $paging_nav .= " &sdot; " .
3307                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3308                                                file_name=>$file_name, page=>$page-1),
3309                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3310         } else {
3311                 $paging_nav .= "first";
3312                 $paging_nav .= " &sdot; prev";
3313         }
3314         if ($#revlist >= (100 * ($page+1)-1)) {
3315                 $paging_nav .= " &sdot; " .
3316                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3317                                                file_name=>$file_name, page=>$page+1),
3318                                  -accesskey => "n", -title => "Alt-n"}, "next");
3319         } else {
3320                 $paging_nav .= " &sdot; next";
3321         }
3322         my $next_link = '';
3323         if ($#revlist >= (100 * ($page+1)-1)) {
3324                 $next_link =
3325                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3326                                                file_name=>$file_name, page=>$page+1),
3327                                  -title => "Alt-n"}, "next");
3328         }
3329
3330         git_header_html();
3331         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3332         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3333         git_print_page_path($file_name, $ftype, $hash_base);
3334
3335         git_history_body(\@revlist, ($page * 100), $#revlist,
3336                          $refs, $hash_base, $ftype, $next_link);
3337
3338         git_footer_html();
3339 }
3340
3341 sub git_search {
3342         if (!defined $searchtext) {
3343                 die_error(undef, "Text field empty");
3344         }
3345         if (!defined $hash) {
3346                 $hash = git_get_head_hash($project);
3347         }
3348         my %co = parse_commit($hash);
3349         if (!%co) {
3350                 die_error(undef, "Unknown commit object");
3351         }
3352
3353         my $commit_search = 1;
3354         my $author_search = 0;
3355         my $committer_search = 0;
3356         my $pickaxe_search = 0;
3357         if ($searchtext =~ s/^author\\://i) {
3358                 $author_search = 1;
3359         } elsif ($searchtext =~ s/^committer\\://i) {
3360                 $committer_search = 1;
3361         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3362                 $commit_search = 0;
3363                 $pickaxe_search = 1;
3364
3365                 # pickaxe may take all resources of your box and run for several minutes
3366                 # with every query - so decide by yourself how public you make this feature
3367                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3368                 if (!$have_pickaxe) {
3369                         die_error('403 Permission denied', "Permission denied");
3370                 }
3371         }
3372         git_header_html();
3373         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3374         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3375
3376         print "<table cellspacing=\"0\">\n";
3377         my $alternate = 0;
3378         if ($commit_search) {
3379                 $/ = "\0";
3380                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3381                 while (my $commit_text = <$fd>) {
3382                         if (!grep m/$searchtext/i, $commit_text) {
3383                                 next;
3384                         }
3385                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3386                                 next;
3387                         }
3388                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3389                                 next;
3390                         }
3391                         my @commit_lines = split "\n", $commit_text;
3392                         my %co = parse_commit(undef, \@commit_lines);
3393                         if (!%co) {
3394                                 next;
3395                         }
3396                         if ($alternate) {
3397                                 print "<tr class=\"dark\">\n";
3398                         } else {
3399                                 print "<tr class=\"light\">\n";
3400                         }
3401                         $alternate ^= 1;
3402                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3403                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3404                               "<td>" .
3405                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3406                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3407                         my $comment = $co{'comment'};
3408                         foreach my $line (@$comment) {
3409                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3410                                         my $lead = esc_html($1) || "";
3411                                         $lead = chop_str($lead, 30, 10);
3412                                         my $match = esc_html($2) || "";
3413                                         my $trail = esc_html($3) || "";
3414                                         $trail = chop_str($trail, 30, 10);
3415                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3416                                         print chop_str($text, 80, 5) . "<br/>\n";
3417                                 }
3418                         }
3419                         print "</td>\n" .
3420                               "<td class=\"link\">" .
3421                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3422                               " | " .
3423                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3424                         print "</td>\n" .
3425                               "</tr>\n";
3426                 }
3427                 close $fd;
3428         }
3429
3430         if ($pickaxe_search) {
3431                 $/ = "\n";
3432                 my $git_command = git_cmd_str();
3433                 open my $fd, "-|", "$git_command rev-list $hash | " .
3434                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3435                 undef %co;
3436                 my @files;
3437                 while (my $line = <$fd>) {
3438                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3439                                 my %set;
3440                                 $set{'file'} = $6;
3441                                 $set{'from_id'} = $3;
3442                                 $set{'to_id'} = $4;
3443                                 $set{'id'} = $set{'to_id'};
3444                                 if ($set{'id'} =~ m/0{40}/) {
3445                                         $set{'id'} = $set{'from_id'};
3446                                 }
3447                                 if ($set{'id'} =~ m/0{40}/) {
3448                                         next;
3449                                 }
3450                                 push @files, \%set;
3451                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3452                                 if (%co) {
3453                                         if ($alternate) {
3454                                                 print "<tr class=\"dark\">\n";
3455                                         } else {
3456                                                 print "<tr class=\"light\">\n";
3457                                         }
3458                                         $alternate ^= 1;
3459                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3460                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3461                                               "<td>" .
3462                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3463                                                       -class => "list subject"},
3464                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3465                                         while (my $setref = shift @files) {
3466                                                 my %set = %$setref;
3467                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3468                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3469                                                               -class => "list"},
3470                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3471                                                       "<br/>\n";
3472                                         }
3473                                         print "</td>\n" .
3474                                               "<td class=\"link\">" .
3475                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3476                                               " | " .
3477                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3478                                         print "</td>\n" .
3479                                               "</tr>\n";
3480                                 }
3481                                 %co = parse_commit($1);
3482                         }
3483                 }
3484                 close $fd;
3485         }
3486         print "</table>\n";
3487         git_footer_html();
3488 }
3489
3490 sub git_shortlog {
3491         my $head = git_get_head_hash($project);
3492         if (!defined $hash) {
3493                 $hash = $head;
3494         }
3495         if (!defined $page) {
3496                 $page = 0;
3497         }
3498         my $refs = git_get_references();
3499
3500         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3501         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3502                 or die_error(undef, "Open git-rev-list failed");
3503         my @revlist = map { chomp; $_ } <$fd>;
3504         close $fd;
3505
3506         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3507         my $next_link = '';
3508         if ($#revlist >= (100 * ($page+1)-1)) {
3509                 $next_link =
3510                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3511                                  -title => "Alt-n"}, "next");
3512         }
3513
3514
3515         git_header_html();
3516         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3517         git_print_header_div('summary', $project);
3518
3519         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3520
3521         git_footer_html();
3522 }
3523
3524 ## ......................................................................
3525 ## feeds (RSS, OPML)
3526
3527 sub git_rss {
3528         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3529         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3530                 or die_error(undef, "Open git-rev-list failed");
3531         my @revlist = map { chomp; $_ } <$fd>;
3532         close $fd or die_error(undef, "Reading git-rev-list failed");
3533         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3534         print <<XML;
3535 <?xml version="1.0" encoding="utf-8"?>
3536 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3537 <channel>
3538 <title>$project $my_uri $my_url</title>
3539 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3540 <description>$project log</description>
3541 <language>en</language>
3542 XML
3543
3544         for (my $i = 0; $i <= $#revlist; $i++) {
3545                 my $commit = $revlist[$i];
3546                 my %co = parse_commit($commit);
3547                 # we read 150, we always show 30 and the ones more recent than 48 hours
3548                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3549                         last;
3550                 }
3551                 my %cd = parse_date($co{'committer_epoch'});
3552                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3553                         $co{'parent'}, $co{'id'}
3554                         or next;
3555                 my @difftree = map { chomp; $_ } <$fd>;
3556                 close $fd
3557                         or next;
3558                 print "<item>\n" .
3559                       "<title>" .
3560                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3561                       "</title>\n" .
3562                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3563                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3564                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3565                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3566                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3567                       "<content:encoded>" .
3568                       "<![CDATA[\n";
3569                 my $comment = $co{'comment'};
3570                 foreach my $line (@$comment) {
3571                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3572                         print "$line<br/>\n";
3573                 }
3574                 print "<br/>\n";
3575                 foreach my $line (@difftree) {
3576                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3577                                 next;
3578                         }
3579                         my $file = validate_input(unquote($7));
3580                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3581                         print "$file<br/>\n";
3582                 }
3583                 print "]]>\n" .
3584                       "</content:encoded>\n" .
3585                       "</item>\n";
3586         }
3587         print "</channel></rss>";
3588 }
3589
3590 sub git_opml {
3591         my @list = git_get_projects_list();
3592
3593         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3594         print <<XML;
3595 <?xml version="1.0" encoding="utf-8"?>
3596 <opml version="1.0">
3597 <head>
3598   <title>$site_name Git OPML Export</title>
3599 </head>
3600 <body>
3601 <outline text="git RSS feeds">
3602 XML
3603
3604         foreach my $pr (@list) {
3605                 my %proj = %$pr;
3606                 my $head = git_get_head_hash($proj{'path'});
3607                 if (!defined $head) {
3608                         next;
3609                 }
3610                 $git_dir = "$projectroot/$proj{'path'}";
3611                 my %co = parse_commit($head);
3612                 if (!%co) {
3613                         next;
3614                 }
3615
3616                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3617                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3618                 my $html = "$my_url?p=$proj{'path'};a=summary";
3619                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3620         }
3621         print <<XML;
3622 </outline>
3623 </body>
3624 </opml>
3625 XML
3626 }