Lady’s Gitweb - Gitweb/blob - 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 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # default order of projects list
  76 # valid values are none, project, descr, owner, and age
  77 our $default_projects_order = "project";
  78
  79 # show repository only if this file exists
  80 # (only effective if this variable evaluates to true)
  81 our $export_ok = "++GITWEB_EXPORT_OK++";
  82
  83 # only allow viewing of repositories also shown on the overview page
  84 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  85
  86 # list of git base URLs used for URL to where fetch project from,
  87 # i.e. full URL is "$git_base_url/$project"
  88 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  89
  90 # default blob_plain mimetype and default charset for text/plain blob
  91 our $default_blob_plain_mimetype = 'text/plain';
  92 our $default_text_plain_charset  = undef;
  93
  94 # file to use for guessing MIME types before trying /etc/mime.types
  95 # (relative to the current git repository)
  96 our $mimetypes_file = undef;
  97
  98 # You define site-wide feature defaults here; override them with
  99 # $GITWEB_CONFIG as necessary.
 100 our %feature = (
 101         # feature => {
 102         #       'sub' => feature-sub (subroutine),
 103         #       'override' => allow-override (boolean),
 104         #       'default' => [ default options...] (array reference)}
 105         #
 106         # if feature is overridable (it means that allow-override has true value,
 107         # then feature-sub will be called with default options as parameters;
 108         # return value of feature-sub indicates if to enable specified feature
 109         #
 110         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 111
 112         # Enable the 'blame' blob view, showing the last commit that modified
 113         # each line in the file. This can be very CPU-intensive.
 114
 115         # To enable system wide have in $GITWEB_CONFIG
 116         # $feature{'blame'}{'default'} = [1];
 117         # To have project specific config enable override in $GITWEB_CONFIG
 118         # $feature{'blame'}{'override'} = 1;
 119         # and in project config gitweb.blame = 0|1;
 120         'blame' => {
 121                 'sub' => \&feature_blame,
 122                 'override' => 0,
 123                 'default' => [0]},
 124
 125         # Enable the 'snapshot' link, providing a compressed tarball of any
 126         # tree. This can potentially generate high traffic if you have large
 127         # project.
 128
 129         # To disable system wide have in $GITWEB_CONFIG
 130         # $feature{'snapshot'}{'default'} = [undef];
 131         # To have project specific config enable override in $GITWEB_CONFIG
 132         # $feature{'snapshot'}{'override'} = 1;
 133         # and in project config gitweb.snapshot = none|gzip|bzip2;
 134         'snapshot' => {
 135                 'sub' => \&feature_snapshot,
 136                 'override' => 0,
 137                 #         => [content-encoding, suffix, program]
 138                 'default' => ['x-gzip', 'gz', 'gzip']},
 139
 140         # Enable text search, which will list the commits which match author,
 141         # committer or commit text to a given string.  Enabled by default.
 142         'search' => {
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Enable the pickaxe search, which will list the commits that modified
 147         # a given string in a file. This can be practical and quite faster
 148         # alternative to 'blame', but still potentially CPU-intensive.
 149
 150         # To enable system wide have in $GITWEB_CONFIG
 151         # $feature{'pickaxe'}{'default'} = [1];
 152         # To have project specific config enable override in $GITWEB_CONFIG
 153         # $feature{'pickaxe'}{'override'} = 1;
 154         # and in project config gitweb.pickaxe = 0|1;
 155         'pickaxe' => {
 156                 'sub' => \&feature_pickaxe,
 157                 'override' => 0,
 158                 'default' => [1]},
 159
 160         # Make gitweb use an alternative format of the URLs which can be
 161         # more readable and natural-looking: project name is embedded
 162         # directly in the path and the query string contains other
 163         # auxiliary information. All gitweb installations recognize
 164         # URL in either format; this configures in which formats gitweb
 165         # generates links.
 166
 167         # To enable system wide have in $GITWEB_CONFIG
 168         # $feature{'pathinfo'}{'default'} = [1];
 169         # Project specific override is not supported.
 170
 171         # Note that you will need to change the default location of CSS,
 172         # favicon, logo and possibly other files to an absolute URL. Also,
 173         # if gitweb.cgi serves as your indexfile, you will need to force
 174         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 175         'pathinfo' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178
 179         # Make gitweb consider projects in project root subdirectories
 180         # to be forks of existing projects. Given project $projname.git,
 181         # projects matching $projname/*.git will not be shown in the main
 182         # projects list, instead a '+' mark will be added to $projname
 183         # there and a 'forks' view will be enabled for the project, listing
 184         # all the forks. If project list is taken from a file, forks have
 185         # to be listed after the main project.
 186
 187         # To enable system wide have in $GITWEB_CONFIG
 188         # $feature{'forks'}{'default'} = [1];
 189         # Project specific override is not supported.
 190         'forks' => {
 191                 'override' => 0,
 192                 'default' => [0]},
 193 );
 194
 195 sub gitweb_check_feature {
 196         my ($name) = @_;
 197         return unless exists $feature{$name};
 198         my ($sub, $override, @defaults) = (
 199                 $feature{$name}{'sub'},
 200                 $feature{$name}{'override'},
 201                 @{$feature{$name}{'default'}});
 202         if (!$override) { return @defaults; }
 203         if (!defined $sub) {
 204                 warn "feature $name is not overrideable";
 205                 return @defaults;
 206         }
 207         return $sub->(@defaults);
 208 }
 209
 210 sub feature_blame {
 211         my ($val) = git_get_project_config('blame', '--bool');
 212
 213         if ($val eq 'true') {
 214                 return 1;
 215         } elsif ($val eq 'false') {
 216                 return 0;
 217         }
 218
 219         return $_[0];
 220 }
 221
 222 sub feature_snapshot {
 223         my ($ctype, $suffix, $command) = @_;
 224
 225         my ($val) = git_get_project_config('snapshot');
 226
 227         if ($val eq 'gzip') {
 228                 return ('x-gzip', 'gz', 'gzip');
 229         } elsif ($val eq 'bzip2') {
 230                 return ('x-bzip2', 'bz2', 'bzip2');
 231         } elsif ($val eq 'none') {
 232                 return ();
 233         }
 234
 235         return ($ctype, $suffix, $command);
 236 }
 237
 238 sub gitweb_have_snapshot {
 239         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 240         my $have_snapshot = (defined $ctype && defined $suffix);
 241
 242         return $have_snapshot;
 243 }
 244
 245 sub feature_pickaxe {
 246         my ($val) = git_get_project_config('pickaxe', '--bool');
 247
 248         if ($val eq 'true') {
 249                 return (1);
 250         } elsif ($val eq 'false') {
 251                 return (0);
 252         }
 253
 254         return ($_[0]);
 255 }
 256
 257 # checking HEAD file with -e is fragile if the repository was
 258 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 259 # and then pruned.
 260 sub check_head_link {
 261         my ($dir) = @_;
 262         my $headfile = "$dir/HEAD";
 263         return ((-e $headfile) ||
 264                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 265 }
 266
 267 sub check_export_ok {
 268         my ($dir) = @_;
 269         return (check_head_link($dir) &&
 270                 (!$export_ok || -e "$dir/$export_ok"));
 271 }
 272
 273 # rename detection options for git-diff and git-diff-tree
 274 # - default is '-M', with the cost proportional to
 275 #   (number of removed files) * (number of new files).
 276 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 277 #   (number of changed files + number of removed files) * (number of new files)
 278 # - even more costly is '-C', '--find-copies-harder' with cost
 279 #   (number of files in the original tree) * (number of new files)
 280 # - one might want to include '-B' option, e.g. '-B', '-M'
 281 our @diff_opts = ('-M'); # taken from git_commit
 282
 283 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 284 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 285
 286 # version of the core git binary
 287 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 288
 289 $projects_list ||= $projectroot;
 290
 291 # ======================================================================
 292 # input validation and dispatch
 293 our $action = $cgi->param('a');
 294 if (defined $action) {
 295         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 296                 die_error(undef, "Invalid action parameter");
 297         }
 298 }
 299
 300 # parameters which are pathnames
 301 our $project = $cgi->param('p');
 302 if (defined $project) {
 303         if (!validate_pathname($project) ||
 304             !(-d "$projectroot/$project") ||
 305             !check_head_link("$projectroot/$project") ||
 306             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 307             ($strict_export && !project_in_list($project))) {
 308                 undef $project;
 309                 die_error(undef, "No such project");
 310         }
 311 }
 312
 313 our $file_name = $cgi->param('f');
 314 if (defined $file_name) {
 315         if (!validate_pathname($file_name)) {
 316                 die_error(undef, "Invalid file parameter");
 317         }
 318 }
 319
 320 our $file_parent = $cgi->param('fp');
 321 if (defined $file_parent) {
 322         if (!validate_pathname($file_parent)) {
 323                 die_error(undef, "Invalid file parent parameter");
 324         }
 325 }
 326
 327 # parameters which are refnames
 328 our $hash = $cgi->param('h');
 329 if (defined $hash) {
 330         if (!validate_refname($hash)) {
 331                 die_error(undef, "Invalid hash parameter");
 332         }
 333 }
 334
 335 our $hash_parent = $cgi->param('hp');
 336 if (defined $hash_parent) {
 337         if (!validate_refname($hash_parent)) {
 338                 die_error(undef, "Invalid hash parent parameter");
 339         }
 340 }
 341
 342 our $hash_base = $cgi->param('hb');
 343 if (defined $hash_base) {
 344         if (!validate_refname($hash_base)) {
 345                 die_error(undef, "Invalid hash base parameter");
 346         }
 347 }
 348
 349 our $hash_parent_base = $cgi->param('hpb');
 350 if (defined $hash_parent_base) {
 351         if (!validate_refname($hash_parent_base)) {
 352                 die_error(undef, "Invalid hash parent base parameter");
 353         }
 354 }
 355
 356 # other parameters
 357 our $page = $cgi->param('pg');
 358 if (defined $page) {
 359         if ($page =~ m/[^0-9]/) {
 360                 die_error(undef, "Invalid page parameter");
 361         }
 362 }
 363
 364 our $searchtext = $cgi->param('s');
 365 if (defined $searchtext) {
 366         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 367                 die_error(undef, "Invalid search parameter");
 368         }
 369         if (length($searchtext) < 2) {
 370                 die_error(undef, "At least two characters are required for search parameter");
 371         }
 372         $searchtext = quotemeta $searchtext;
 373 }
 374
 375 our $searchtype = $cgi->param('st');
 376 if (defined $searchtype) {
 377         if ($searchtype =~ m/[^a-z]/) {
 378                 die_error(undef, "Invalid searchtype parameter");
 379         }
 380 }
 381
 382 # now read PATH_INFO and use it as alternative to parameters
 383 sub evaluate_path_info {
 384         return if defined $project;
 385         my $path_info = $ENV{"PATH_INFO"};
 386         return if !$path_info;
 387         $path_info =~ s,^/+,,;
 388         return if !$path_info;
 389         # find which part of PATH_INFO is project
 390         $project = $path_info;
 391         $project =~ s,/+$,,;
 392         while ($project && !check_head_link("$projectroot/$project")) {
 393                 $project =~ s,/*[^/]*$,,;
 394         }
 395         # validate project
 396         $project = validate_pathname($project);
 397         if (!$project ||
 398             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 399             ($strict_export && !project_in_list($project))) {
 400                 undef $project;
 401                 return;
 402         }
 403         # do not change any parameters if an action is given using the query string
 404         return if $action;
 405         $path_info =~ s,^$project/*,,;
 406         my ($refname, $pathname) = split(/:/, $path_info, 2);
 407         if (defined $pathname) {
 408                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 409                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 410                 $pathname =~ s,^/+,,;
 411                 if (!$pathname || substr($pathname, -1) eq "/") {
 412                         $action  ||= "tree";
 413                         $pathname =~ s,/$,,;
 414                 } else {
 415                         $action  ||= "blob_plain";
 416                 }
 417                 $hash_base ||= validate_refname($refname);
 418                 $file_name ||= validate_pathname($pathname);
 419         } elsif (defined $refname) {
 420                 # we got "project.git/branch"
 421                 $action ||= "shortlog";
 422                 $hash   ||= validate_refname($refname);
 423         }
 424 }
 425 evaluate_path_info();
 426
 427 # path to the current git repository
 428 our $git_dir;
 429 $git_dir = "$projectroot/$project" if $project;
 430
 431 # dispatch
 432 my %actions = (
 433         "blame" => \&git_blame2,
 434         "blobdiff" => \&git_blobdiff,
 435         "blobdiff_plain" => \&git_blobdiff_plain,
 436         "blob" => \&git_blob,
 437         "blob_plain" => \&git_blob_plain,
 438         "commitdiff" => \&git_commitdiff,
 439         "commitdiff_plain" => \&git_commitdiff_plain,
 440         "commit" => \&git_commit,
 441         "forks" => \&git_forks,
 442         "heads" => \&git_heads,
 443         "history" => \&git_history,
 444         "log" => \&git_log,
 445         "rss" => \&git_rss,
 446         "atom" => \&git_atom,
 447         "search" => \&git_search,
 448         "search_help" => \&git_search_help,
 449         "shortlog" => \&git_shortlog,
 450         "summary" => \&git_summary,
 451         "tag" => \&git_tag,
 452         "tags" => \&git_tags,
 453         "tree" => \&git_tree,
 454         "snapshot" => \&git_snapshot,
 455         "object" => \&git_object,
 456         # those below don't need $project
 457         "opml" => \&git_opml,
 458         "project_list" => \&git_project_list,
 459         "project_index" => \&git_project_index,
 460 );
 461
 462 if (defined $project) {
 463         $action ||= 'summary';
 464 } else {
 465         $action ||= 'project_list';
 466 }
 467 if (!defined($actions{$action})) {
 468         die_error(undef, "Unknown action");
 469 }
 470 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 471     !$project) {
 472         die_error(undef, "Project needed");
 473 }
 474 $actions{$action}->();
 475 exit;
 476
 477 ## ======================================================================
 478 ## action links
 479
 480 sub href(%) {
 481         my %params = @_;
 482         # default is to use -absolute url() i.e. $my_uri
 483         my $href = $params{-full} ? $my_url : $my_uri;
 484
 485         # XXX: Warning: If you touch this, check the search form for updating,
 486         # too.
 487
 488         my @mapping = (
 489                 project => "p",
 490                 action => "a",
 491                 file_name => "f",
 492                 file_parent => "fp",
 493                 hash => "h",
 494                 hash_parent => "hp",
 495                 hash_base => "hb",
 496                 hash_parent_base => "hpb",
 497                 page => "pg",
 498                 order => "o",
 499                 searchtext => "s",
 500                 searchtype => "st",
 501         );
 502         my %mapping = @mapping;
 503
 504         $params{'project'} = $project unless exists $params{'project'};
 505
 506         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 507         if ($use_pathinfo) {
 508                 # use PATH_INFO for project name
 509                 $href .= "/$params{'project'}" if defined $params{'project'};
 510                 delete $params{'project'};
 511
 512                 # Summary just uses the project path URL
 513                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 514                         delete $params{'action'};
 515                 }
 516         }
 517
 518         # now encode the parameters explicitly
 519         my @result = ();
 520         for (my $i = 0; $i < @mapping; $i += 2) {
 521                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 522                 if (defined $params{$name}) {
 523                         push @result, $symbol . "=" . esc_param($params{$name});
 524                 }
 525         }
 526         $href .= "?" . join(';', @result) if scalar @result;
 527
 528         return $href;
 529 }
 530
 531
 532 ## ======================================================================
 533 ## validation, quoting/unquoting and escaping
 534
 535 sub validate_pathname {
 536         my $input = shift || return undef;
 537
 538         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 539         # at the beginning, at the end, and between slashes.
 540         # also this catches doubled slashes
 541         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 542                 return undef;
 543         }
 544         # no null characters
 545         if ($input =~ m!\0!) {
 546                 return undef;
 547         }
 548         return $input;
 549 }
 550
 551 sub validate_refname {
 552         my $input = shift || return undef;
 553
 554         # textual hashes are O.K.
 555         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 556                 return $input;
 557         }
 558         # it must be correct pathname
 559         $input = validate_pathname($input)
 560                 or return undef;
 561         # restrictions on ref name according to git-check-ref-format
 562         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 563                 return undef;
 564         }
 565         return $input;
 566 }
 567
 568 # quote unsafe chars, but keep the slash, even when it's not
 569 # correct, but quoted slashes look too horrible in bookmarks
 570 sub esc_param {
 571         my $str = shift;
 572         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 573         $str =~ s/\+/%2B/g;
 574         $str =~ s/ /\+/g;
 575         return $str;
 576 }
 577
 578 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 579 sub esc_url {
 580         my $str = shift;
 581         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 582         $str =~ s/\+/%2B/g;
 583         $str =~ s/ /\+/g;
 584         return $str;
 585 }
 586
 587 # replace invalid utf8 character with SUBSTITUTION sequence
 588 sub esc_html ($;%) {
 589         my $str = shift;
 590         my %opts = @_;
 591
 592         $str = decode_utf8($str);
 593         $str = $cgi->escapeHTML($str);
 594         if ($opts{'-nbsp'}) {
 595                 $str =~ s/ /&nbsp;/g;
 596         }
 597         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 598         return $str;
 599 }
 600
 601 # quote control characters and escape filename to HTML
 602 sub esc_path {
 603         my $str = shift;
 604         my %opts = @_;
 605
 606         $str = decode_utf8($str);
 607         $str = $cgi->escapeHTML($str);
 608         if ($opts{'-nbsp'}) {
 609                 $str =~ s/ /&nbsp;/g;
 610         }
 611         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 612         return $str;
 613 }
 614
 615 # Make control characters "printable", using character escape codes (CEC)
 616 sub quot_cec {
 617         my $cntrl = shift;
 618         my %es = ( # character escape codes, aka escape sequences
 619                    "\t" => '\t',   # tab            (HT)
 620                    "\n" => '\n',   # line feed      (LF)
 621                    "\r" => '\r',   # carrige return (CR)
 622                    "\f" => '\f',   # form feed      (FF)
 623                    "\b" => '\b',   # backspace      (BS)
 624                    "\a" => '\a',   # alarm (bell)   (BEL)
 625                    "\e" => '\e',   # escape         (ESC)
 626                    "\013" => '\v', # vertical tab   (VT)
 627                    "\000" => '\0', # nul character  (NUL)
 628                    );
 629         my $chr = ( (exists $es{$cntrl})
 630                     ? $es{$cntrl}
 631                     : sprintf('\%03o', ord($cntrl)) );
 632         return "<span class=\"cntrl\">$chr</span>";
 633 }
 634
 635 # Alternatively use unicode control pictures codepoints,
 636 # Unicode "printable representation" (PR)
 637 sub quot_upr {
 638         my $cntrl = shift;
 639         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 640         return "<span class=\"cntrl\">$chr</span>";
 641 }
 642
 643 # git may return quoted and escaped filenames
 644 sub unquote {
 645         my $str = shift;
 646
 647         sub unq {
 648                 my $seq = shift;
 649                 my %es = ( # character escape codes, aka escape sequences
 650                         't' => "\t",   # tab            (HT, TAB)
 651                         'n' => "\n",   # newline        (NL)
 652                         'r' => "\r",   # return         (CR)
 653                         'f' => "\f",   # form feed      (FF)
 654                         'b' => "\b",   # backspace      (BS)
 655                         'a' => "\a",   # alarm (bell)   (BEL)
 656                         'e' => "\e",   # escape         (ESC)
 657                         'v' => "\013", # vertical tab   (VT)
 658                 );
 659
 660                 if ($seq =~ m/^[0-7]{1,3}$/) {
 661                         # octal char sequence
 662                         return chr(oct($seq));
 663                 } elsif (exists $es{$seq}) {
 664                         # C escape sequence, aka character escape code
 665                         return $es{$seq}
 666                 }
 667                 # quoted ordinary character
 668                 return $seq;
 669         }
 670
 671         if ($str =~ m/^"(.*)"$/) {
 672                 # needs unquoting
 673                 $str = $1;
 674                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 675         }
 676         return $str;
 677 }
 678
 679 # escape tabs (convert tabs to spaces)
 680 sub untabify {
 681         my $line = shift;
 682
 683         while ((my $pos = index($line, "\t")) != -1) {
 684                 if (my $count = (8 - ($pos % 8))) {
 685                         my $spaces = ' ' x $count;
 686                         $line =~ s/\t/$spaces/;
 687                 }
 688         }
 689
 690         return $line;
 691 }
 692
 693 sub project_in_list {
 694         my $project = shift;
 695         my @list = git_get_projects_list();
 696         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 697 }
 698
 699 ## ----------------------------------------------------------------------
 700 ## HTML aware string manipulation
 701
 702 sub chop_str {
 703         my $str = shift;
 704         my $len = shift;
 705         my $add_len = shift || 10;
 706
 707         # allow only $len chars, but don't cut a word if it would fit in $add_len
 708         # if it doesn't fit, cut it if it's still longer than the dots we would add
 709         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 710         my $body = $1;
 711         my $tail = $2;
 712         if (length($tail) > 4) {
 713                 $tail = " ...";
 714                 $body =~ s/&[^;]*$//; # remove chopped character entities
 715         }
 716         return "$body$tail";
 717 }
 718
 719 ## ----------------------------------------------------------------------
 720 ## functions returning short strings
 721
 722 # CSS class for given age value (in seconds)
 723 sub age_class {
 724         my $age = shift;
 725
 726         if ($age < 60*60*2) {
 727                 return "age0";
 728         } elsif ($age < 60*60*24*2) {
 729                 return "age1";
 730         } else {
 731                 return "age2";
 732         }
 733 }
 734
 735 # convert age in seconds to "nn units ago" string
 736 sub age_string {
 737         my $age = shift;
 738         my $age_str;
 739
 740         if ($age > 60*60*24*365*2) {
 741                 $age_str = (int $age/60/60/24/365);
 742                 $age_str .= " years ago";
 743         } elsif ($age > 60*60*24*(365/12)*2) {
 744                 $age_str = int $age/60/60/24/(365/12);
 745                 $age_str .= " months ago";
 746         } elsif ($age > 60*60*24*7*2) {
 747                 $age_str = int $age/60/60/24/7;
 748                 $age_str .= " weeks ago";
 749         } elsif ($age > 60*60*24*2) {
 750                 $age_str = int $age/60/60/24;
 751                 $age_str .= " days ago";
 752         } elsif ($age > 60*60*2) {
 753                 $age_str = int $age/60/60;
 754                 $age_str .= " hours ago";
 755         } elsif ($age > 60*2) {
 756                 $age_str = int $age/60;
 757                 $age_str .= " min ago";
 758         } elsif ($age > 2) {
 759                 $age_str = int $age;
 760                 $age_str .= " sec ago";
 761         } else {
 762                 $age_str .= " right now";
 763         }
 764         return $age_str;
 765 }
 766
 767 # convert file mode in octal to symbolic file mode string
 768 sub mode_str {
 769         my $mode = oct shift;
 770
 771         if (S_ISDIR($mode & S_IFMT)) {
 772                 return 'drwxr-xr-x';
 773         } elsif (S_ISLNK($mode)) {
 774                 return 'lrwxrwxrwx';
 775         } elsif (S_ISREG($mode)) {
 776                 # git cares only about the executable bit
 777                 if ($mode & S_IXUSR) {
 778                         return '-rwxr-xr-x';
 779                 } else {
 780                         return '-rw-r--r--';
 781                 };
 782         } else {
 783                 return '----------';
 784         }
 785 }
 786
 787 # convert file mode in octal to file type string
 788 sub file_type {
 789         my $mode = shift;
 790
 791         if ($mode !~ m/^[0-7]+$/) {
 792                 return $mode;
 793         } else {
 794                 $mode = oct $mode;
 795         }
 796
 797         if (S_ISDIR($mode & S_IFMT)) {
 798                 return "directory";
 799         } elsif (S_ISLNK($mode)) {
 800                 return "symlink";
 801         } elsif (S_ISREG($mode)) {
 802                 return "file";
 803         } else {
 804                 return "unknown";
 805         }
 806 }
 807
 808 # convert file mode in octal to file type description string
 809 sub file_type_long {
 810         my $mode = shift;
 811
 812         if ($mode !~ m/^[0-7]+$/) {
 813                 return $mode;
 814         } else {
 815                 $mode = oct $mode;
 816         }
 817
 818         if (S_ISDIR($mode & S_IFMT)) {
 819                 return "directory";
 820         } elsif (S_ISLNK($mode)) {
 821                 return "symlink";
 822         } elsif (S_ISREG($mode)) {
 823                 if ($mode & S_IXUSR) {
 824                         return "executable";
 825                 } else {
 826                         return "file";
 827                 };
 828         } else {
 829                 return "unknown";
 830         }
 831 }
 832
 833
 834 ## ----------------------------------------------------------------------
 835 ## functions returning short HTML fragments, or transforming HTML fragments
 836 ## which don't belong to other sections
 837
 838 # format line of commit message.
 839 sub format_log_line_html {
 840         my $line = shift;
 841
 842         $line = esc_html($line, -nbsp=>1);
 843         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 844                 my $hash_text = $1;
 845                 my $link =
 846                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 847                                 -class => "text"}, $hash_text);
 848                 $line =~ s/$hash_text/$link/;
 849         }
 850         return $line;
 851 }
 852
 853 # format marker of refs pointing to given object
 854 sub format_ref_marker {
 855         my ($refs, $id) = @_;
 856         my $markers = '';
 857
 858         if (defined $refs->{$id}) {
 859                 foreach my $ref (@{$refs->{$id}}) {
 860                         my ($type, $name) = qw();
 861                         # e.g. tags/v2.6.11 or heads/next
 862                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 863                                 $type = $1;
 864                                 $name = $2;
 865                         } else {
 866                                 $type = "ref";
 867                                 $name = $ref;
 868                         }
 869
 870                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 871                                     esc_html($name) . "</span>";
 872                 }
 873         }
 874
 875         if ($markers) {
 876                 return ' <span class="refs">'. $markers . '</span>';
 877         } else {
 878                 return "";
 879         }
 880 }
 881
 882 # format, perhaps shortened and with markers, title line
 883 sub format_subject_html {
 884         my ($long, $short, $href, $extra) = @_;
 885         $extra = '' unless defined($extra);
 886
 887         if (length($short) < length($long)) {
 888                 return $cgi->a({-href => $href, -class => "list subject",
 889                                 -title => decode_utf8($long)},
 890                        esc_html($short) . $extra);
 891         } else {
 892                 return $cgi->a({-href => $href, -class => "list subject"},
 893                        esc_html($long)  . $extra);
 894         }
 895 }
 896
 897 # format patch (diff) line (rather not to be used for diff headers)
 898 sub format_diff_line {
 899         my $line = shift;
 900         my ($from, $to) = @_;
 901         my $char = substr($line, 0, 1);
 902         my $diff_class = "";
 903
 904         chomp $line;
 905
 906         if ($char eq '+') {
 907                 $diff_class = " add";
 908         } elsif ($char eq "-") {
 909                 $diff_class = " rem";
 910         } elsif ($char eq "@") {
 911                 $diff_class = " chunk_header";
 912         } elsif ($char eq "\\") {
 913                 $diff_class = " incomplete";
 914         }
 915         $line = untabify($line);
 916         if ($from && $to && $line =~ m/^\@{2} /) {
 917                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 918                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 919
 920                 $from_lines = 0 unless defined $from_lines;
 921                 $to_lines   = 0 unless defined $to_lines;
 922
 923                 if ($from->{'href'}) {
 924                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 925                                              -class=>"list"}, $from_text);
 926                 }
 927                 if ($to->{'href'}) {
 928                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 929                                              -class=>"list"}, $to_text);
 930                 }
 931                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 932                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 933                 return "<div class=\"diff$diff_class\">$line</div>\n";
 934         }
 935         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 936 }
 937
 938 ## ----------------------------------------------------------------------
 939 ## git utility subroutines, invoking git commands
 940
 941 # returns path to the core git executable and the --git-dir parameter as list
 942 sub git_cmd {
 943         return $GIT, '--git-dir='.$git_dir;
 944 }
 945
 946 # returns path to the core git executable and the --git-dir parameter as string
 947 sub git_cmd_str {
 948         return join(' ', git_cmd());
 949 }
 950
 951 # get HEAD ref of given project as hash
 952 sub git_get_head_hash {
 953         my $project = shift;
 954         my $o_git_dir = $git_dir;
 955         my $retval = undef;
 956         $git_dir = "$projectroot/$project";
 957         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 958                 my $head = <$fd>;
 959                 close $fd;
 960                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 961                         $retval = $1;
 962                 }
 963         }
 964         if (defined $o_git_dir) {
 965                 $git_dir = $o_git_dir;
 966         }
 967         return $retval;
 968 }
 969
 970 # get type of given object
 971 sub git_get_type {
 972         my $hash = shift;
 973
 974         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 975         my $type = <$fd>;
 976         close $fd or return;
 977         chomp $type;
 978         return $type;
 979 }
 980
 981 sub git_get_project_config {
 982         my ($key, $type) = @_;
 983
 984         return unless ($key);
 985         $key =~ s/^gitweb\.//;
 986         return if ($key =~ m/\W/);
 987
 988         my @x = (git_cmd(), 'config');
 989         if (defined $type) { push @x, $type; }
 990         push @x, "--get";
 991         push @x, "gitweb.$key";
 992         my $val = qx(@x);
 993         chomp $val;
 994         return ($val);
 995 }
 996
 997 # get hash of given path at given ref
 998 sub git_get_hash_by_path {
 999         my $base = shift;
1000         my $path = shift || return undef;
1001         my $type = shift;
1002
1003         $path =~ s,/+$,,;
1004
1005         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1006                 or die_error(undef, "Open git-ls-tree failed");
1007         my $line = <$fd>;
1008         close $fd or return undef;
1009
1010         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1011         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1012         if (defined $type && $type ne $2) {
1013                 # type doesn't match
1014                 return undef;
1015         }
1016         return $3;
1017 }
1018
1019 # get path of entry with given hash at given tree-ish (ref)
1020 # used to get 'from' filename for combined diff (merge commit) for renames
1021 sub git_get_path_by_hash {
1022         my $base = shift || return;
1023         my $hash = shift || return;
1024
1025         local $/ = "\0";
1026
1027         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1028                 or return undef;
1029         while (my $line = <$fd>) {
1030                 chomp $line;
1031
1032                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1033                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1034                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1035                         close $fd;
1036                         return $1;
1037                 }
1038         }
1039         close $fd;
1040         return undef;
1041 }
1042
1043 ## ......................................................................
1044 ## git utility functions, directly accessing git repository
1045
1046 sub git_get_project_description {
1047         my $path = shift;
1048
1049         open my $fd, "$projectroot/$path/description" or return undef;
1050         my $descr = <$fd>;
1051         close $fd;
1052         chomp $descr;
1053         return $descr;
1054 }
1055
1056 sub git_get_project_url_list {
1057         my $path = shift;
1058
1059         open my $fd, "$projectroot/$path/cloneurl" or return;
1060         my @git_project_url_list = map { chomp; $_ } <$fd>;
1061         close $fd;
1062
1063         return wantarray ? @git_project_url_list : \@git_project_url_list;
1064 }
1065
1066 sub git_get_projects_list {
1067         my ($filter) = @_;
1068         my @list;
1069
1070         $filter ||= '';
1071         $filter =~ s/\.git$//;
1072
1073         my ($check_forks) = gitweb_check_feature('forks');
1074
1075         if (-d $projects_list) {
1076                 # search in directory
1077                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1078                 # remove the trailing "/"
1079                 $dir =~ s!/+$!!;
1080                 my $pfxlen = length("$dir");
1081
1082                 File::Find::find({
1083                         follow_fast => 1, # follow symbolic links
1084                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1085                         wanted => sub {
1086                                 # skip project-list toplevel, if we get it.
1087                                 return if (m!^[/.]$!);
1088                                 # only directories can be git repositories
1089                                 return unless (-d $_);
1090
1091                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1092                                 # we check related file in $projectroot
1093                                 if ($check_forks and $subdir =~ m#/.#) {
1094                                         $File::Find::prune = 1;
1095                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1096                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1097                                         $File::Find::prune = 1;
1098                                 }
1099                         },
1100                 }, "$dir");
1101
1102         } elsif (-f $projects_list) {
1103                 # read from file(url-encoded):
1104                 # 'git%2Fgit.git Linus+Torvalds'
1105                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1106                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1107                 my %paths;
1108                 open my ($fd), $projects_list or return;
1109         PROJECT:
1110                 while (my $line = <$fd>) {
1111                         chomp $line;
1112                         my ($path, $owner) = split ' ', $line;
1113                         $path = unescape($path);
1114                         $owner = unescape($owner);
1115                         if (!defined $path) {
1116                                 next;
1117                         }
1118                         if ($filter ne '') {
1119                                 # looking for forks;
1120                                 my $pfx = substr($path, 0, length($filter));
1121                                 if ($pfx ne $filter) {
1122                                         next PROJECT;
1123                                 }
1124                                 my $sfx = substr($path, length($filter));
1125                                 if ($sfx !~ /^\/.*\.git$/) {
1126                                         next PROJECT;
1127                                 }
1128                         } elsif ($check_forks) {
1129                         PATH:
1130                                 foreach my $filter (keys %paths) {
1131                                         # looking for forks;
1132                                         my $pfx = substr($path, 0, length($filter));
1133                                         if ($pfx ne $filter) {
1134                                                 next PATH;
1135                                         }
1136                                         my $sfx = substr($path, length($filter));
1137                                         if ($sfx !~ /^\/.*\.git$/) {
1138                                                 next PATH;
1139                                         }
1140                                         # is a fork, don't include it in
1141                                         # the list
1142                                         next PROJECT;
1143                                 }
1144                         }
1145                         if (check_export_ok("$projectroot/$path")) {
1146                                 my $pr = {
1147                                         path => $path,
1148                                         owner => decode_utf8($owner),
1149                                 };
1150                                 push @list, $pr;
1151                                 (my $forks_path = $path) =~ s/\.git$//;
1152                                 $paths{$forks_path}++;
1153                         }
1154                 }
1155                 close $fd;
1156         }
1157         return @list;
1158 }
1159
1160 sub git_get_project_owner {
1161         my $project = shift;
1162         my $owner;
1163
1164         return undef unless $project;
1165
1166         # read from file (url-encoded):
1167         # 'git%2Fgit.git Linus+Torvalds'
1168         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1169         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1170         if (-f $projects_list) {
1171                 open (my $fd , $projects_list);
1172                 while (my $line = <$fd>) {
1173                         chomp $line;
1174                         my ($pr, $ow) = split ' ', $line;
1175                         $pr = unescape($pr);
1176                         $ow = unescape($ow);
1177                         if ($pr eq $project) {
1178                                 $owner = decode_utf8($ow);
1179                                 last;
1180                         }
1181                 }
1182                 close $fd;
1183         }
1184         if (!defined $owner) {
1185                 $owner = get_file_owner("$projectroot/$project");
1186         }
1187
1188         return $owner;
1189 }
1190
1191 sub git_get_last_activity {
1192         my ($path) = @_;
1193         my $fd;
1194
1195         $git_dir = "$projectroot/$path";
1196         open($fd, "-|", git_cmd(), 'for-each-ref',
1197              '--format=%(committer)',
1198              '--sort=-committerdate',
1199              '--count=1',
1200              'refs/heads') or return;
1201         my $most_recent = <$fd>;
1202         close $fd or return;
1203         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1204                 my $timestamp = $1;
1205                 my $age = time - $timestamp;
1206                 return ($age, age_string($age));
1207         }
1208 }
1209
1210 sub git_get_references {
1211         my $type = shift || "";
1212         my %refs;
1213         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1214         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1215         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1216                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1217                 or return;
1218
1219         while (my $line = <$fd>) {
1220                 chomp $line;
1221                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1222                         if (defined $refs{$1}) {
1223                                 push @{$refs{$1}}, $2;
1224                         } else {
1225                                 $refs{$1} = [ $2 ];
1226                         }
1227                 }
1228         }
1229         close $fd or return;
1230         return \%refs;
1231 }
1232
1233 sub git_get_rev_name_tags {
1234         my $hash = shift || return undef;
1235
1236         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1237                 or return;
1238         my $name_rev = <$fd>;
1239         close $fd;
1240
1241         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1242                 return $1;
1243         } else {
1244                 # catches also '$hash undefined' output
1245                 return undef;
1246         }
1247 }
1248
1249 ## ----------------------------------------------------------------------
1250 ## parse to hash functions
1251
1252 sub parse_date {
1253         my $epoch = shift;
1254         my $tz = shift || "-0000";
1255
1256         my %date;
1257         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1258         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1259         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1260         $date{'hour'} = $hour;
1261         $date{'minute'} = $min;
1262         $date{'mday'} = $mday;
1263         $date{'day'} = $days[$wday];
1264         $date{'month'} = $months[$mon];
1265         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1266                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1267         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1268                              $mday, $months[$mon], $hour ,$min;
1269         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1270                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1271
1272         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1273         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1274         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1275         $date{'hour_local'} = $hour;
1276         $date{'minute_local'} = $min;
1277         $date{'tz_local'} = $tz;
1278         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1279                                   1900+$year, $mon+1, $mday,
1280                                   $hour, $min, $sec, $tz);
1281         return %date;
1282 }
1283
1284 sub parse_tag {
1285         my $tag_id = shift;
1286         my %tag;
1287         my @comment;
1288
1289         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1290         $tag{'id'} = $tag_id;
1291         while (my $line = <$fd>) {
1292                 chomp $line;
1293                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1294                         $tag{'object'} = $1;
1295                 } elsif ($line =~ m/^type (.+)$/) {
1296                         $tag{'type'} = $1;
1297                 } elsif ($line =~ m/^tag (.+)$/) {
1298                         $tag{'name'} = $1;
1299                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1300                         $tag{'author'} = $1;
1301                         $tag{'epoch'} = $2;
1302                         $tag{'tz'} = $3;
1303                 } elsif ($line =~ m/--BEGIN/) {
1304                         push @comment, $line;
1305                         last;
1306                 } elsif ($line eq "") {
1307                         last;
1308                 }
1309         }
1310         push @comment, <$fd>;
1311         $tag{'comment'} = \@comment;
1312         close $fd or return;
1313         if (!defined $tag{'name'}) {
1314                 return
1315         };
1316         return %tag
1317 }
1318
1319 sub parse_commit_text {
1320         my ($commit_text, $withparents) = @_;
1321         my @commit_lines = split '\n', $commit_text;
1322         my %co;
1323
1324         pop @commit_lines; # Remove '\0'
1325
1326         my $header = shift @commit_lines;
1327         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1328                 return;
1329         }
1330         ($co{'id'}, my @parents) = split ' ', $header;
1331         while (my $line = shift @commit_lines) {
1332                 last if $line eq "\n";
1333                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1334                         $co{'tree'} = $1;
1335                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1336                         push @parents, $1;
1337                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1338                         $co{'author'} = $1;
1339                         $co{'author_epoch'} = $2;
1340                         $co{'author_tz'} = $3;
1341                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1342                                 $co{'author_name'}  = $1;
1343                                 $co{'author_email'} = $2;
1344                         } else {
1345                                 $co{'author_name'} = $co{'author'};
1346                         }
1347                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1348                         $co{'committer'} = $1;
1349                         $co{'committer_epoch'} = $2;
1350                         $co{'committer_tz'} = $3;
1351                         $co{'committer_name'} = $co{'committer'};
1352                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1353                                 $co{'committer_name'}  = $1;
1354                                 $co{'committer_email'} = $2;
1355                         } else {
1356                                 $co{'committer_name'} = $co{'committer'};
1357                         }
1358                 }
1359         }
1360         if (!defined $co{'tree'}) {
1361                 return;
1362         };
1363         $co{'parents'} = \@parents;
1364         $co{'parent'} = $parents[0];
1365
1366         foreach my $title (@commit_lines) {
1367                 $title =~ s/^    //;
1368                 if ($title ne "") {
1369                         $co{'title'} = chop_str($title, 80, 5);
1370                         # remove leading stuff of merges to make the interesting part visible
1371                         if (length($title) > 50) {
1372                                 $title =~ s/^Automatic //;
1373                                 $title =~ s/^merge (of|with) /Merge ... /i;
1374                                 if (length($title) > 50) {
1375                                         $title =~ s/(http|rsync):\/\///;
1376                                 }
1377                                 if (length($title) > 50) {
1378                                         $title =~ s/(master|www|rsync)\.//;
1379                                 }
1380                                 if (length($title) > 50) {
1381                                         $title =~ s/kernel.org:?//;
1382                                 }
1383                                 if (length($title) > 50) {
1384                                         $title =~ s/\/pub\/scm//;
1385                                 }
1386                         }
1387                         $co{'title_short'} = chop_str($title, 50, 5);
1388                         last;
1389                 }
1390         }
1391         if ($co{'title'} eq "") {
1392                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1393         }
1394         # remove added spaces
1395         foreach my $line (@commit_lines) {
1396                 $line =~ s/^    //;
1397         }
1398         $co{'comment'} = \@commit_lines;
1399
1400         my $age = time - $co{'committer_epoch'};
1401         $co{'age'} = $age;
1402         $co{'age_string'} = age_string($age);
1403         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1404         if ($age > 60*60*24*7*2) {
1405                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1406                 $co{'age_string_age'} = $co{'age_string'};
1407         } else {
1408                 $co{'age_string_date'} = $co{'age_string'};
1409                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1410         }
1411         return %co;
1412 }
1413
1414 sub parse_commit {
1415         my ($commit_id) = @_;
1416         my %co;
1417
1418         local $/ = "\0";
1419
1420         open my $fd, "-|", git_cmd(), "rev-list",
1421                 "--parents",
1422                 "--header",
1423                 "--max-count=1",
1424                 $commit_id,
1425                 "--",
1426                 or die_error(undef, "Open git-rev-list failed");
1427         %co = parse_commit_text(<$fd>, 1);
1428         close $fd;
1429
1430         return %co;
1431 }
1432
1433 sub parse_commits {
1434         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1435         my @cos;
1436
1437         $maxcount ||= 1;
1438         $skip ||= 0;
1439
1440         local $/ = "\0";
1441
1442         open my $fd, "-|", git_cmd(), "rev-list",
1443                 "--header",
1444                 ($arg ? ($arg) : ()),
1445                 ("--max-count=" . $maxcount),
1446                 ("--skip=" . $skip),
1447                 $commit_id,
1448                 "--",
1449                 ($filename ? ($filename) : ())
1450                 or die_error(undef, "Open git-rev-list failed");
1451         while (my $line = <$fd>) {
1452                 my %co = parse_commit_text($line);
1453                 push @cos, \%co;
1454         }
1455         close $fd;
1456
1457         return wantarray ? @cos : \@cos;
1458 }
1459
1460 # parse ref from ref_file, given by ref_id, with given type
1461 sub parse_ref {
1462         my $ref_file = shift;
1463         my $ref_id = shift;
1464         my $type = shift || git_get_type($ref_id);
1465         my %ref_item;
1466
1467         $ref_item{'type'} = $type;
1468         $ref_item{'id'} = $ref_id;
1469         $ref_item{'epoch'} = 0;
1470         $ref_item{'age'} = "unknown";
1471         if ($type eq "tag") {
1472                 my %tag = parse_tag($ref_id);
1473                 $ref_item{'comment'} = $tag{'comment'};
1474                 if ($tag{'type'} eq "commit") {
1475                         my %co = parse_commit($tag{'object'});
1476                         $ref_item{'epoch'} = $co{'committer_epoch'};
1477                         $ref_item{'age'} = $co{'age_string'};
1478                 } elsif (defined($tag{'epoch'})) {
1479                         my $age = time - $tag{'epoch'};
1480                         $ref_item{'epoch'} = $tag{'epoch'};
1481                         $ref_item{'age'} = age_string($age);
1482                 }
1483                 $ref_item{'reftype'} = $tag{'type'};
1484                 $ref_item{'name'} = $tag{'name'};
1485                 $ref_item{'refid'} = $tag{'object'};
1486         } elsif ($type eq "commit"){
1487                 my %co = parse_commit($ref_id);
1488                 $ref_item{'reftype'} = "commit";
1489                 $ref_item{'name'} = $ref_file;
1490                 $ref_item{'title'} = $co{'title'};
1491                 $ref_item{'refid'} = $ref_id;
1492                 $ref_item{'epoch'} = $co{'committer_epoch'};
1493                 $ref_item{'age'} = $co{'age_string'};
1494         } else {
1495                 $ref_item{'reftype'} = $type;
1496                 $ref_item{'name'} = $ref_file;
1497                 $ref_item{'refid'} = $ref_id;
1498         }
1499
1500         return %ref_item;
1501 }
1502
1503 # parse line of git-diff-tree "raw" output
1504 sub parse_difftree_raw_line {
1505         my $line = shift;
1506         my %res;
1507
1508         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1509         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1510         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1511                 $res{'from_mode'} = $1;
1512                 $res{'to_mode'} = $2;
1513                 $res{'from_id'} = $3;
1514                 $res{'to_id'} = $4;
1515                 $res{'status'} = $5;
1516                 $res{'similarity'} = $6;
1517                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1518                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1519                 } else {
1520                         $res{'file'} = unquote($7);
1521                 }
1522         }
1523         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1524         # combined diff (for merge commit)
1525         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1526                 $res{'nparents'}  = length($1);
1527                 $res{'from_mode'} = [ split(' ', $2) ];
1528                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1529                 $res{'from_id'} = [ split(' ', $3) ];
1530                 $res{'to_id'} = pop @{$res{'from_id'}};
1531                 $res{'status'} = [ split('', $4) ];
1532                 $res{'to_file'} = unquote($5);
1533         }
1534         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1535         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1536                 $res{'commit'} = $1;
1537         }
1538
1539         return wantarray ? %res : \%res;
1540 }
1541
1542 # parse line of git-ls-tree output
1543 sub parse_ls_tree_line ($;%) {
1544         my $line = shift;
1545         my %opts = @_;
1546         my %res;
1547
1548         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1549         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1550
1551         $res{'mode'} = $1;
1552         $res{'type'} = $2;
1553         $res{'hash'} = $3;
1554         if ($opts{'-z'}) {
1555                 $res{'name'} = $4;
1556         } else {
1557                 $res{'name'} = unquote($4);
1558         }
1559
1560         return wantarray ? %res : \%res;
1561 }
1562
1563 ## ......................................................................
1564 ## parse to array of hashes functions
1565
1566 sub git_get_heads_list {
1567         my $limit = shift;
1568         my @headslist;
1569
1570         open my $fd, '-|', git_cmd(), 'for-each-ref',
1571                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1572                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1573                 'refs/heads'
1574                 or return;
1575         while (my $line = <$fd>) {
1576                 my %ref_item;
1577
1578                 chomp $line;
1579                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1580                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1581                 my ($committer, $epoch, $tz) =
1582                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1583                 $name =~ s!^refs/heads/!!;
1584
1585                 $ref_item{'name'}  = $name;
1586                 $ref_item{'id'}    = $hash;
1587                 $ref_item{'title'} = $title || '(no commit message)';
1588                 $ref_item{'epoch'} = $epoch;
1589                 if ($epoch) {
1590                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1591                 } else {
1592                         $ref_item{'age'} = "unknown";
1593                 }
1594
1595                 push @headslist, \%ref_item;
1596         }
1597         close $fd;
1598
1599         return wantarray ? @headslist : \@headslist;
1600 }
1601
1602 sub git_get_tags_list {
1603         my $limit = shift;
1604         my @tagslist;
1605
1606         open my $fd, '-|', git_cmd(), 'for-each-ref',
1607                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1608                 '--format=%(objectname) %(objecttype) %(refname) '.
1609                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1610                 'refs/tags'
1611                 or return;
1612         while (my $line = <$fd>) {
1613                 my %ref_item;
1614
1615                 chomp $line;
1616                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1617                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1618                 my ($creator, $epoch, $tz) =
1619                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1620                 $name =~ s!^refs/tags/!!;
1621
1622                 $ref_item{'type'} = $type;
1623                 $ref_item{'id'} = $id;
1624                 $ref_item{'name'} = $name;
1625                 if ($type eq "tag") {
1626                         $ref_item{'subject'} = $title;
1627                         $ref_item{'reftype'} = $reftype;
1628                         $ref_item{'refid'}   = $refid;
1629                 } else {
1630                         $ref_item{'reftype'} = $type;
1631                         $ref_item{'refid'}   = $id;
1632                 }
1633
1634                 if ($type eq "tag" || $type eq "commit") {
1635                         $ref_item{'epoch'} = $epoch;
1636                         if ($epoch) {
1637                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1638                         } else {
1639                                 $ref_item{'age'} = "unknown";
1640                         }
1641                 }
1642
1643                 push @tagslist, \%ref_item;
1644         }
1645         close $fd;
1646
1647         return wantarray ? @tagslist : \@tagslist;
1648 }
1649
1650 ## ----------------------------------------------------------------------
1651 ## filesystem-related functions
1652
1653 sub get_file_owner {
1654         my $path = shift;
1655
1656         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1657         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1658         if (!defined $gcos) {
1659                 return undef;
1660         }
1661         my $owner = $gcos;
1662         $owner =~ s/[,;].*$//;
1663         return decode_utf8($owner);
1664 }
1665
1666 ## ......................................................................
1667 ## mimetype related functions
1668
1669 sub mimetype_guess_file {
1670         my $filename = shift;
1671         my $mimemap = shift;
1672         -r $mimemap or return undef;
1673
1674         my %mimemap;
1675         open(MIME, $mimemap) or return undef;
1676         while (<MIME>) {
1677                 next if m/^#/; # skip comments
1678                 my ($mime, $exts) = split(/\t+/);
1679                 if (defined $exts) {
1680                         my @exts = split(/\s+/, $exts);
1681                         foreach my $ext (@exts) {
1682                                 $mimemap{$ext} = $mime;
1683                         }
1684                 }
1685         }
1686         close(MIME);
1687
1688         $filename =~ /\.([^.]*)$/;
1689         return $mimemap{$1};
1690 }
1691
1692 sub mimetype_guess {
1693         my $filename = shift;
1694         my $mime;
1695         $filename =~ /\./ or return undef;
1696
1697         if ($mimetypes_file) {
1698                 my $file = $mimetypes_file;
1699                 if ($file !~ m!^/!) { # if it is relative path
1700                         # it is relative to project
1701                         $file = "$projectroot/$project/$file";
1702                 }
1703                 $mime = mimetype_guess_file($filename, $file);
1704         }
1705         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1706         return $mime;
1707 }
1708
1709 sub blob_mimetype {
1710         my $fd = shift;
1711         my $filename = shift;
1712
1713         if ($filename) {
1714                 my $mime = mimetype_guess($filename);
1715                 $mime and return $mime;
1716         }
1717
1718         # just in case
1719         return $default_blob_plain_mimetype unless $fd;
1720
1721         if (-T $fd) {
1722                 return 'text/plain' .
1723                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1724         } elsif (! $filename) {
1725                 return 'application/octet-stream';
1726         } elsif ($filename =~ m/\.png$/i) {
1727                 return 'image/png';
1728         } elsif ($filename =~ m/\.gif$/i) {
1729                 return 'image/gif';
1730         } elsif ($filename =~ m/\.jpe?g$/i) {
1731                 return 'image/jpeg';
1732         } else {
1733                 return 'application/octet-stream';
1734         }
1735 }
1736
1737 ## ======================================================================
1738 ## functions printing HTML: header, footer, error page
1739
1740 sub git_header_html {
1741         my $status = shift || "200 OK";
1742         my $expires = shift;
1743
1744         my $title = "$site_name";
1745         if (defined $project) {
1746                 $title .= " - " . decode_utf8($project);
1747                 if (defined $action) {
1748                         $title .= "/$action";
1749                         if (defined $file_name) {
1750                                 $title .= " - " . esc_path($file_name);
1751                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1752                                         $title .= "/";
1753                                 }
1754                         }
1755                 }
1756         }
1757         my $content_type;
1758         # require explicit support from the UA if we are to send the page as
1759         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1760         # we have to do this because MSIE sometimes globs '*/*', pretending to
1761         # support xhtml+xml but choking when it gets what it asked for.
1762         if (defined $cgi->http('HTTP_ACCEPT') &&
1763             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1764             $cgi->Accept('application/xhtml+xml') != 0) {
1765                 $content_type = 'application/xhtml+xml';
1766         } else {
1767                 $content_type = 'text/html';
1768         }
1769         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1770                            -status=> $status, -expires => $expires);
1771         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1772         print <<EOF;
1773 <?xml version="1.0" encoding="utf-8"?>
1774 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1775 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1776 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1777 <!-- git core binaries version $git_version -->
1778 <head>
1779 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1780 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1781 <meta name="robots" content="index, nofollow"/>
1782 <title>$title</title>
1783 EOF
1784 # print out each stylesheet that exist
1785         if (defined $stylesheet) {
1786 #provides backwards capability for those people who define style sheet in a config file
1787                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1788         } else {
1789                 foreach my $stylesheet (@stylesheets) {
1790                         next unless $stylesheet;
1791                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1792                 }
1793         }
1794         if (defined $project) {
1795                 printf('<link rel="alternate" title="%s log RSS feed" '.
1796                        'href="%s" type="application/rss+xml" />'."\n",
1797                        esc_param($project), href(action=>"rss"));
1798                 printf('<link rel="alternate" title="%s log Atom feed" '.
1799                        'href="%s" type="application/atom+xml" />'."\n",
1800                        esc_param($project), href(action=>"atom"));
1801         } else {
1802                 printf('<link rel="alternate" title="%s projects list" '.
1803                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1804                        $site_name, href(project=>undef, action=>"project_index"));
1805                 printf('<link rel="alternate" title="%s projects feeds" '.
1806                        'href="%s" type="text/x-opml"/>'."\n",
1807                        $site_name, href(project=>undef, action=>"opml"));
1808         }
1809         if (defined $favicon) {
1810                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1811         }
1812
1813         print "</head>\n" .
1814               "<body>\n";
1815
1816         if (-f $site_header) {
1817                 open (my $fd, $site_header);
1818                 print <$fd>;
1819                 close $fd;
1820         }
1821
1822         print "<div class=\"page_header\">\n" .
1823               $cgi->a({-href => esc_url($logo_url),
1824                        -title => $logo_label},
1825                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1826         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1827         if (defined $project) {
1828                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1829                 if (defined $action) {
1830                         print " / $action";
1831                 }
1832                 print "\n";
1833         }
1834         my ($have_search) = gitweb_check_feature('search');
1835         if ((defined $project) && ($have_search)) {
1836                 if (!defined $searchtext) {
1837                         $searchtext = "";
1838                 }
1839                 my $search_hash;
1840                 if (defined $hash_base) {
1841                         $search_hash = $hash_base;
1842                 } elsif (defined $hash) {
1843                         $search_hash = $hash;
1844                 } else {
1845                         $search_hash = "HEAD";
1846                 }
1847                 $cgi->param("a", "search");
1848                 $cgi->param("h", $search_hash);
1849                 $cgi->param("p", $project);
1850                 print $cgi->startform(-method => "get", -action => $my_uri) .
1851                       "<div class=\"search\">\n" .
1852                       $cgi->hidden(-name => "p") . "\n" .
1853                       $cgi->hidden(-name => "a") . "\n" .
1854                       $cgi->hidden(-name => "h") . "\n" .
1855                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1856                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1857                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1858                       " search:\n",
1859                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1860                       "</div>" .
1861                       $cgi->end_form() . "\n";
1862         }
1863         print "</div>\n";
1864 }
1865
1866 sub git_footer_html {
1867         print "<div class=\"page_footer\">\n";
1868         if (defined $project) {
1869                 my $descr = git_get_project_description($project);
1870                 if (defined $descr) {
1871                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1872                 }
1873                 print $cgi->a({-href => href(action=>"rss"),
1874                               -class => "rss_logo"}, "RSS") . " ";
1875                 print $cgi->a({-href => href(action=>"atom"),
1876                               -class => "rss_logo"}, "Atom") . "\n";
1877         } else {
1878                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1879                               -class => "rss_logo"}, "OPML") . " ";
1880                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1881                               -class => "rss_logo"}, "TXT") . "\n";
1882         }
1883         print "</div>\n" ;
1884
1885         if (-f $site_footer) {
1886                 open (my $fd, $site_footer);
1887                 print <$fd>;
1888                 close $fd;
1889         }
1890
1891         print "</body>\n" .
1892               "</html>";
1893 }
1894
1895 sub die_error {
1896         my $status = shift || "403 Forbidden";
1897         my $error = shift || "Malformed query, file missing or permission denied";
1898
1899         git_header_html($status);
1900         print <<EOF;
1901 <div class="page_body">
1902 <br /><br />
1903 $status - $error
1904 <br />
1905 </div>
1906 EOF
1907         git_footer_html();
1908         exit;
1909 }
1910
1911 ## ----------------------------------------------------------------------
1912 ## functions printing or outputting HTML: navigation
1913
1914 sub git_print_page_nav {
1915         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1916         $extra = '' if !defined $extra; # pager or formats
1917
1918         my @navs = qw(summary shortlog log commit commitdiff tree);
1919         if ($suppress) {
1920                 @navs = grep { $_ ne $suppress } @navs;
1921         }
1922
1923         my %arg = map { $_ => {action=>$_} } @navs;
1924         if (defined $head) {
1925                 for (qw(commit commitdiff)) {
1926                         $arg{$_}{'hash'} = $head;
1927                 }
1928                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1929                         for (qw(shortlog log)) {
1930                                 $arg{$_}{'hash'} = $head;
1931                         }
1932                 }
1933         }
1934         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1935         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1936
1937         print "<div class=\"page_nav\">\n" .
1938                 (join " | ",
1939                  map { $_ eq $current ?
1940                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1941                  } @navs);
1942         print "<br/>\n$extra<br/>\n" .
1943               "</div>\n";
1944 }
1945
1946 sub format_paging_nav {
1947         my ($action, $hash, $head, $page, $nrevs) = @_;
1948         my $paging_nav;
1949
1950
1951         if ($hash ne $head || $page) {
1952                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1953         } else {
1954                 $paging_nav .= "HEAD";
1955         }
1956
1957         if ($page > 0) {
1958                 $paging_nav .= " &sdot; " .
1959                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1960                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1961         } else {
1962                 $paging_nav .= " &sdot; prev";
1963         }
1964
1965         if ($nrevs >= (100 * ($page+1)-1)) {
1966                 $paging_nav .= " &sdot; " .
1967                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1968                                  -accesskey => "n", -title => "Alt-n"}, "next");
1969         } else {
1970                 $paging_nav .= " &sdot; next";
1971         }
1972
1973         return $paging_nav;
1974 }
1975
1976 ## ......................................................................
1977 ## functions printing or outputting HTML: div
1978
1979 sub git_print_header_div {
1980         my ($action, $title, $hash, $hash_base) = @_;
1981         my %args = ();
1982
1983         $args{'action'} = $action;
1984         $args{'hash'} = $hash if $hash;
1985         $args{'hash_base'} = $hash_base if $hash_base;
1986
1987         print "<div class=\"header\">\n" .
1988               $cgi->a({-href => href(%args), -class => "title"},
1989               $title ? $title : $action) .
1990               "\n</div>\n";
1991 }
1992
1993 #sub git_print_authorship (\%) {
1994 sub git_print_authorship {
1995         my $co = shift;
1996
1997         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1998         print "<div class=\"author_date\">" .
1999               esc_html($co->{'author_name'}) .
2000               " [$ad{'rfc2822'}";
2001         if ($ad{'hour_local'} < 6) {
2002                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2003                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2004         } else {
2005                 printf(" (%02d:%02d %s)",
2006                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2007         }
2008         print "]</div>\n";
2009 }
2010
2011 sub git_print_page_path {
2012         my $name = shift;
2013         my $type = shift;
2014         my $hb = shift;
2015
2016
2017         print "<div class=\"page_path\">";
2018         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2019                       -title => 'tree root'}, decode_utf8("[$project]"));
2020         print " / ";
2021         if (defined $name) {
2022                 my @dirname = split '/', $name;
2023                 my $basename = pop @dirname;
2024                 my $fullname = '';
2025
2026                 foreach my $dir (@dirname) {
2027                         $fullname .= ($fullname ? '/' : '') . $dir;
2028                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2029                                                      hash_base=>$hb),
2030                                       -title => $fullname}, esc_path($dir));
2031                         print " / ";
2032                 }
2033                 if (defined $type && $type eq 'blob') {
2034                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2035                                                      hash_base=>$hb),
2036                                       -title => $name}, esc_path($basename));
2037                 } elsif (defined $type && $type eq 'tree') {
2038                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2039                                                      hash_base=>$hb),
2040                                       -title => $name}, esc_path($basename));
2041                         print " / ";
2042                 } else {
2043                         print esc_path($basename);
2044                 }
2045         }
2046         print "<br/></div>\n";
2047 }
2048
2049 # sub git_print_log (\@;%) {
2050 sub git_print_log ($;%) {
2051         my $log = shift;
2052         my %opts = @_;
2053
2054         if ($opts{'-remove_title'}) {
2055                 # remove title, i.e. first line of log
2056                 shift @$log;
2057         }
2058         # remove leading empty lines
2059         while (defined $log->[0] && $log->[0] eq "") {
2060                 shift @$log;
2061         }
2062
2063         # print log
2064         my $signoff = 0;
2065         my $empty = 0;
2066         foreach my $line (@$log) {
2067                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2068                         $signoff = 1;
2069                         $empty = 0;
2070                         if (! $opts{'-remove_signoff'}) {
2071                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2072                                 next;
2073                         } else {
2074                                 # remove signoff lines
2075                                 next;
2076                         }
2077                 } else {
2078                         $signoff = 0;
2079                 }
2080
2081                 # print only one empty line
2082                 # do not print empty line after signoff
2083                 if ($line eq "") {
2084                         next if ($empty || $signoff);
2085                         $empty = 1;
2086                 } else {
2087                         $empty = 0;
2088                 }
2089
2090                 print format_log_line_html($line) . "<br/>\n";
2091         }
2092
2093         if ($opts{'-final_empty_line'}) {
2094                 # end with single empty line
2095                 print "<br/>\n" unless $empty;
2096         }
2097 }
2098
2099 # return link target (what link points to)
2100 sub git_get_link_target {
2101         my $hash = shift;
2102         my $link_target;
2103
2104         # read link
2105         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2106                 or return;
2107         {
2108                 local $/;
2109                 $link_target = <$fd>;
2110         }
2111         close $fd
2112                 or return;
2113
2114         return $link_target;
2115 }
2116
2117 # given link target, and the directory (basedir) the link is in,
2118 # return target of link relative to top directory (top tree);
2119 # return undef if it is not possible (including absolute links).
2120 sub normalize_link_target {
2121         my ($link_target, $basedir, $hash_base) = @_;
2122
2123         # we can normalize symlink target only if $hash_base is provided
2124         return unless $hash_base;
2125
2126         # absolute symlinks (beginning with '/') cannot be normalized
2127         return if (substr($link_target, 0, 1) eq '/');
2128
2129         # normalize link target to path from top (root) tree (dir)
2130         my $path;
2131         if ($basedir) {
2132                 $path = $basedir . '/' . $link_target;
2133         } else {
2134                 # we are in top (root) tree (dir)
2135                 $path = $link_target;
2136         }
2137
2138         # remove //, /./, and /../
2139         my @path_parts;
2140         foreach my $part (split('/', $path)) {
2141                 # discard '.' and ''
2142                 next if (!$part || $part eq '.');
2143                 # handle '..'
2144                 if ($part eq '..') {
2145                         if (@path_parts) {
2146                                 pop @path_parts;
2147                         } else {
2148                                 # link leads outside repository (outside top dir)
2149                                 return;
2150                         }
2151                 } else {
2152                         push @path_parts, $part;
2153                 }
2154         }
2155         $path = join('/', @path_parts);
2156
2157         return $path;
2158 }
2159
2160 # print tree entry (row of git_tree), but without encompassing <tr> element
2161 sub git_print_tree_entry {
2162         my ($t, $basedir, $hash_base, $have_blame) = @_;
2163
2164         my %base_key = ();
2165         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2166
2167         # The format of a table row is: mode list link.  Where mode is
2168         # the mode of the entry, list is the name of the entry, an href,
2169         # and link is the action links of the entry.
2170
2171         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2172         if ($t->{'type'} eq "blob") {
2173                 print "<td class=\"list\">" .
2174                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2175                                                file_name=>"$basedir$t->{'name'}", %base_key),
2176                                 -class => "list"}, esc_path($t->{'name'}));
2177                 if (S_ISLNK(oct $t->{'mode'})) {
2178                         my $link_target = git_get_link_target($t->{'hash'});
2179                         if ($link_target) {
2180                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2181                                 if (defined $norm_target) {
2182                                         print " -> " .
2183                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2184                                                                      file_name=>$norm_target),
2185                                                        -title => $norm_target}, esc_path($link_target));
2186                                 } else {
2187                                         print " -> " . esc_path($link_target);
2188                                 }
2189                         }
2190                 }
2191                 print "</td>\n";
2192                 print "<td class=\"link\">";
2193                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2194                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2195                               "blob");
2196                 if ($have_blame) {
2197                         print " | " .
2198                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2199                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2200                                       "blame");
2201                 }
2202                 if (defined $hash_base) {
2203                         print " | " .
2204                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2205                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2206                                       "history");
2207                 }
2208                 print " | " .
2209                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2210                                                file_name=>"$basedir$t->{'name'}")},
2211                                 "raw");
2212                 print "</td>\n";
2213
2214         } elsif ($t->{'type'} eq "tree") {
2215                 print "<td class=\"list\">";
2216                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2217                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2218                               esc_path($t->{'name'}));
2219                 print "</td>\n";
2220                 print "<td class=\"link\">";
2221                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2222                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2223                               "tree");
2224                 if (defined $hash_base) {
2225                         print " | " .
2226                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2227                                                      file_name=>"$basedir$t->{'name'}")},
2228                                       "history");
2229                 }
2230                 print "</td>\n";
2231         }
2232 }
2233
2234 ## ......................................................................
2235 ## functions printing large fragments of HTML
2236
2237 sub git_difftree_body {
2238         my ($difftree, $hash, @parents) = @_;
2239         my ($parent) = $parents[0];
2240         my ($have_blame) = gitweb_check_feature('blame');
2241         print "<div class=\"list_head\">\n";
2242         if ($#{$difftree} > 10) {
2243                 print(($#{$difftree} + 1) . " files changed:\n");
2244         }
2245         print "</div>\n";
2246
2247         print "<table class=\"" .
2248               (@parents > 1 ? "combined " : "") .
2249               "diff_tree\">\n";
2250         my $alternate = 1;
2251         my $patchno = 0;
2252         foreach my $line (@{$difftree}) {
2253                 my %diff = parse_difftree_raw_line($line);
2254
2255                 if ($alternate) {
2256                         print "<tr class=\"dark\">\n";
2257                 } else {
2258                         print "<tr class=\"light\">\n";
2259                 }
2260                 $alternate ^= 1;
2261
2262                 if (exists $diff{'nparents'}) { # combined diff
2263
2264                         if ($diff{'to_id'} ne ('0' x 40)) {
2265                                 # file exists in the result (child) commit
2266                                 print "<td>" .
2267                                       $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2268                                                              file_name=>$diff{'to_file'},
2269                                                              hash_base=>$hash),
2270                                               -class => "list"}, esc_path($diff{'to_file'})) .
2271                                       "</td>\n";
2272                         } else {
2273                                 print "<td>" .
2274                                       esc_path($diff{'to_file'}) .
2275                                       "</td>\n";
2276                         }
2277
2278                         if ($action eq 'commitdiff') {
2279                                 # link to patch
2280                                 $patchno++;
2281                                 print "<td class=\"link\">" .
2282                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2283                                       " | " .
2284                                       "</td>\n";
2285                         }
2286
2287                         my $has_history = 0;
2288                         my $not_deleted = 0;
2289                         for (my $i = 0; $i < $diff{'nparents'}; $i++) {
2290                                 my $hash_parent = $parents[$i];
2291                                 my $from_hash = $diff{'from_id'}[$i];
2292                                 my $from_path = undef;
2293                                 my $status = $diff{'status'}[$i];
2294
2295                                 $has_history ||= ($status ne 'A');
2296                                 $not_deleted ||= ($status ne 'D');
2297
2298                                 if ($status eq 'R' || $status eq 'C') {
2299                                         $from_path = git_get_path_by_hash($hash_parent, $from_hash);
2300                                 }
2301
2302                                 if ($status eq 'A') {
2303                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2304                                 } elsif ($status eq 'D') {
2305                                         print "<td class=\"link\">" .
2306                                               $cgi->a({-href => href(action=>"blob",
2307                                                                      hash_base=>$hash,
2308                                                                      hash=>$from_hash,
2309                                                                      file_name=>$from_path)},
2310                                                       "blob" . ($i+1)) .
2311                                               " | </td>\n";
2312                                 } else {
2313                                         if ($diff{'to_id'} eq $from_hash) {
2314                                                 print "<td class=\"link nochange\">";
2315                                         } else {
2316                                                 print "<td class=\"link\">";
2317                                         }
2318                                         print $cgi->a({-href => href(action=>"blobdiff",
2319                                                                      hash=>$diff{'to_id'},
2320                                                                      hash_parent=>$from_hash,
2321                                                                      hash_base=>$hash,
2322                                                                      hash_parent_base=>$hash_parent,
2323                                                                      file_name=>$diff{'to_file'},
2324                                                                      file_parent=>$from_path)},
2325                                                       "diff" . ($i+1)) .
2326                                               " | </td>\n";
2327                                 }
2328                         }
2329
2330                         print "<td class=\"link\">";
2331                         if ($not_deleted) {
2332                                 print $cgi->a({-href => href(action=>"blob",
2333                                                              hash=>$diff{'to_id'},
2334                                                              file_name=>$diff{'to_file'},
2335                                                              hash_base=>$hash)},
2336                                               "blob");
2337                                 print " | " if ($has_history);
2338                         }
2339                         if ($has_history) {
2340                                 print $cgi->a({-href => href(action=>"history",
2341                                                              file_name=>$diff{'to_file'},
2342                                                              hash_base=>$hash)},
2343                                               "history");
2344                         }
2345                         print "</td>\n";
2346
2347                         print "</tr>\n";
2348                         next; # instead of 'else' clause, to avoid extra indent
2349                 }
2350                 # else ordinary diff
2351
2352                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2353                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2354                 if ($diff{'to_mode'} ne ('0' x 6)) {
2355                         $to_mode_oct = oct $diff{'to_mode'};
2356                         if (S_ISREG($to_mode_oct)) { # only for regular file
2357                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2358                         }
2359                         $to_file_type = file_type($diff{'to_mode'});
2360                 }
2361                 if ($diff{'from_mode'} ne ('0' x 6)) {
2362                         $from_mode_oct = oct $diff{'from_mode'};
2363                         if (S_ISREG($to_mode_oct)) { # only for regular file
2364                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2365                         }
2366                         $from_file_type = file_type($diff{'from_mode'});
2367                 }
2368
2369                 if ($diff{'status'} eq "A") { # created
2370                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2371                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2372                         $mode_chng   .= "]</span>";
2373                         print "<td>";
2374                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2375                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2376                                       -class => "list"}, esc_path($diff{'file'}));
2377                         print "</td>\n";
2378                         print "<td>$mode_chng</td>\n";
2379                         print "<td class=\"link\">";
2380                         if ($action eq 'commitdiff') {
2381                                 # link to patch
2382                                 $patchno++;
2383                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2384                                 print " | ";
2385                         }
2386                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2387                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2388                                       "blob");
2389                         print "</td>\n";
2390
2391                 } elsif ($diff{'status'} eq "D") { # deleted
2392                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2393                         print "<td>";
2394                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2395                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2396                                        -class => "list"}, esc_path($diff{'file'}));
2397                         print "</td>\n";
2398                         print "<td>$mode_chng</td>\n";
2399                         print "<td class=\"link\">";
2400                         if ($action eq 'commitdiff') {
2401                                 # link to patch
2402                                 $patchno++;
2403                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2404                                 print " | ";
2405                         }
2406                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2407                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2408                                       "blob") . " | ";
2409                         if ($have_blame) {
2410                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2411                                                              file_name=>$diff{'file'})},
2412                                               "blame") . " | ";
2413                         }
2414                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2415                                                      file_name=>$diff{'file'})},
2416                                       "history");
2417                         print "</td>\n";
2418
2419                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2420                         my $mode_chnge = "";
2421                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2422                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2423                                 if ($from_file_type ne $to_file_type) {
2424                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2425                                 }
2426                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2427                                         if ($from_mode_str && $to_mode_str) {
2428                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2429                                         } elsif ($to_mode_str) {
2430                                                 $mode_chnge .= " mode: $to_mode_str";
2431                                         }
2432                                 }
2433                                 $mode_chnge .= "]</span>\n";
2434                         }
2435                         print "<td>";
2436                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2437                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2438                                       -class => "list"}, esc_path($diff{'file'}));
2439                         print "</td>\n";
2440                         print "<td>$mode_chnge</td>\n";
2441                         print "<td class=\"link\">";
2442                         if ($action eq 'commitdiff') {
2443                                 # link to patch
2444                                 $patchno++;
2445                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2446                                       " | ";
2447                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2448                                 # "commit" view and modified file (not onlu mode changed)
2449                                 print $cgi->a({-href => href(action=>"blobdiff",
2450                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2451                                                              hash_base=>$hash, hash_parent_base=>$parent,
2452                                                              file_name=>$diff{'file'})},
2453                                               "diff") .
2454                                       " | ";
2455                         }
2456                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2457                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2458                                        "blob") . " | ";
2459                         if ($have_blame) {
2460                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2461                                                              file_name=>$diff{'file'})},
2462                                               "blame") . " | ";
2463                         }
2464                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2465                                                      file_name=>$diff{'file'})},
2466                                       "history");
2467                         print "</td>\n";
2468
2469                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2470                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2471                         my $nstatus = $status_name{$diff{'status'}};
2472                         my $mode_chng = "";
2473                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2474                                 # mode also for directories, so we cannot use $to_mode_str
2475                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2476                         }
2477                         print "<td>" .
2478                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2479                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2480                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2481                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2482                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2483                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2484                                       -class => "list"}, esc_path($diff{'from_file'})) .
2485                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2486                               "<td class=\"link\">";
2487                         if ($action eq 'commitdiff') {
2488                                 # link to patch
2489                                 $patchno++;
2490                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2491                                       " | ";
2492                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2493                                 # "commit" view and modified file (not only pure rename or copy)
2494                                 print $cgi->a({-href => href(action=>"blobdiff",
2495                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2496                                                              hash_base=>$hash, hash_parent_base=>$parent,
2497                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2498                                               "diff") .
2499                                       " | ";
2500                         }
2501                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2502                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2503                                       "blob") . " | ";
2504                         if ($have_blame) {
2505                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2506                                                              file_name=>$diff{'to_file'})},
2507                                               "blame") . " | ";
2508                         }
2509                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2510                                                     file_name=>$diff{'to_file'})},
2511                                       "history");
2512                         print "</td>\n";
2513
2514                 } # we should not encounter Unmerged (U) or Unknown (X) status
2515                 print "</tr>\n";
2516         }
2517         print "</table>\n";
2518 }
2519
2520 sub git_patchset_body {
2521         my ($fd, $difftree, $hash, $hash_parent) = @_;
2522
2523         my $patch_idx = 0;
2524         my $patch_number = 0;
2525         my $patch_line;
2526         my $diffinfo;
2527         my (%from, %to);
2528
2529         print "<div class=\"patchset\">\n";
2530
2531         # skip to first patch
2532         while ($patch_line = <$fd>) {
2533                 chomp $patch_line;
2534
2535                 last if ($patch_line =~ m/^diff /);
2536         }
2537
2538  PATCH:
2539         while ($patch_line) {
2540                 my @diff_header;
2541                 my ($from_id, $to_id);
2542
2543                 # git diff header
2544                 #assert($patch_line =~ m/^diff /) if DEBUG;
2545                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2546                 $patch_number++;
2547                 push @diff_header, $patch_line;
2548
2549                 # extended diff header
2550         EXTENDED_HEADER:
2551                 while ($patch_line = <$fd>) {
2552                         chomp $patch_line;
2553
2554                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2555
2556                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2557                                 $from_id = $1;
2558                                 $to_id   = $2;
2559                         }
2560
2561                         push @diff_header, $patch_line;
2562                 }
2563                 my $last_patch_line = $patch_line;
2564
2565                 # check if current patch belong to current raw line
2566                 # and parse raw git-diff line if needed
2567                 if (defined $diffinfo &&
2568                     $diffinfo->{'from_id'} eq $from_id &&
2569                     $diffinfo->{'to_id'}   eq $to_id) {
2570                         # this is split patch
2571                         print "<div class=\"patch cont\">\n";
2572                 } else {
2573                         # advance raw git-diff output if needed
2574                         $patch_idx++ if defined $diffinfo;
2575
2576                         # read and prepare patch information
2577                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2578                                 # pre-parsed (or generated by hand)
2579                                 $diffinfo = $difftree->[$patch_idx];
2580                         } else {
2581                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2582                         }
2583                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2584                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2585                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2586                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2587                                                      hash=>$diffinfo->{'from_id'},
2588                                                      file_name=>$from{'file'});
2589                         } else {
2590                                 delete $from{'href'};
2591                         }
2592                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2593                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2594                                                    hash=>$diffinfo->{'to_id'},
2595                                                    file_name=>$to{'file'});
2596                         } else {
2597                                 delete $to{'href'};
2598                         }
2599                         # this is first patch for raw difftree line with $patch_idx index
2600                         # we index @$difftree array from 0, but number patches from 1
2601                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2602                 }
2603
2604                 # print "git diff" header
2605                 $patch_line = shift @diff_header;
2606                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2607                 if ($from{'href'}) {
2608                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2609                                                'a/' . esc_path($from{'file'}));
2610                 } else { # file was added
2611                         $patch_line .= 'a/' . esc_path($from{'file'});
2612                 }
2613                 $patch_line .= ' ';
2614                 if ($to{'href'}) {
2615                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2616                                                'b/' . esc_path($to{'file'}));
2617                 } else { # file was deleted
2618                         $patch_line .= 'b/' . esc_path($to{'file'});
2619                 }
2620                 print "<div class=\"diff header\">$patch_line</div>\n";
2621
2622                 # print extended diff header
2623                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2624         EXTENDED_HEADER:
2625                 foreach $patch_line (@diff_header) {
2626                         # match <path>
2627                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2628                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2629                                                        esc_path($from{'file'}));
2630                         }
2631                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2632                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2633                                                        esc_path($to{'file'}));
2634                         }
2635                         # match <mode>
2636                         if ($patch_line =~ m/\s(\d{6})$/) {
2637                                 $patch_line .= '<span class="info"> (' .
2638                                                file_type_long($1) .
2639                                                ')</span>';
2640                         }
2641                         # match <hash>
2642                         if ($patch_line =~ m/^index/) {
2643                                 my ($from_link, $to_link);
2644                                 if ($from{'href'}) {
2645                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2646                                                              substr($diffinfo->{'from_id'},0,7));
2647                                 } else {
2648                                         $from_link = '0' x 7;
2649                                 }
2650                                 if ($to{'href'}) {
2651                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2652                                                            substr($diffinfo->{'to_id'},0,7));
2653                                 } else {
2654                                         $to_link = '0' x 7;
2655                                 }
2656                                 #affirm {
2657                                 #       my ($from_hash, $to_hash) =
2658                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2659                                 #       my ($from_id, $to_id) =
2660                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2661                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2662                                 #} if DEBUG;
2663                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2664                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2665                         }
2666                         print $patch_line . "<br/>\n";
2667                 }
2668                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2669
2670                 # from-file/to-file diff header
2671                 $patch_line = $last_patch_line;
2672                 if (! $patch_line) {
2673                         print "</div>\n"; # class="patch"
2674                         last PATCH;
2675                 }
2676                 next PATCH if ($patch_line =~ m/^diff /);
2677                 #assert($patch_line =~ m/^---/) if DEBUG;
2678                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2679                         $patch_line = '--- a/' .
2680                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2681                                               esc_path($from{'file'}));
2682                 }
2683                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2684
2685                 $patch_line = <$fd>;
2686                 chomp $patch_line;
2687
2688                 #assert($patch_line =~ m/^+++/) if DEBUG;
2689                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2690                         $patch_line = '+++ b/' .
2691                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2692                                               esc_path($to{'file'}));
2693                 }
2694                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2695
2696                 # the patch itself
2697         LINE:
2698                 while ($patch_line = <$fd>) {
2699                         chomp $patch_line;
2700
2701                         next PATCH if ($patch_line =~ m/^diff /);
2702
2703                         print format_diff_line($patch_line, \%from, \%to);
2704                 }
2705
2706         } continue {
2707                 print "</div>\n"; # class="patch"
2708         }
2709         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2710
2711         print "</div>\n"; # class="patchset"
2712 }
2713
2714 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2715
2716 sub git_project_list_body {
2717         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2718
2719         my ($check_forks) = gitweb_check_feature('forks');
2720
2721         my @projects;
2722         foreach my $pr (@$projlist) {
2723                 my (@aa) = git_get_last_activity($pr->{'path'});
2724                 unless (@aa) {
2725                         next;
2726                 }
2727                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2728                 if (!defined $pr->{'descr'}) {
2729                         my $descr = git_get_project_description($pr->{'path'}) || "";
2730                         $pr->{'descr_long'} = decode_utf8($descr);
2731                         $pr->{'descr'} = chop_str($descr, 25, 5);
2732                 }
2733                 if (!defined $pr->{'owner'}) {
2734                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2735                 }
2736                 if ($check_forks) {
2737                         my $pname = $pr->{'path'};
2738                         if (($pname =~ s/\.git$//) &&
2739                             ($pname !~ /\/$/) &&
2740                             (-d "$projectroot/$pname")) {
2741                                 $pr->{'forks'} = "-d $projectroot/$pname";
2742                         }
2743                         else {
2744                                 $pr->{'forks'} = 0;
2745                         }
2746                 }
2747                 push @projects, $pr;
2748         }
2749
2750         $order ||= $default_projects_order;
2751         $from = 0 unless defined $from;
2752         $to = $#projects if (!defined $to || $#projects < $to);
2753
2754         print "<table class=\"project_list\">\n";
2755         unless ($no_header) {
2756                 print "<tr>\n";
2757                 if ($check_forks) {
2758                         print "<th></th>\n";
2759                 }
2760                 if ($order eq "project") {
2761                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2762                         print "<th>Project</th>\n";
2763                 } else {
2764                         print "<th>" .
2765                               $cgi->a({-href => href(project=>undef, order=>'project'),
2766                                        -class => "header"}, "Project") .
2767                               "</th>\n";
2768                 }
2769                 if ($order eq "descr") {
2770                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2771                         print "<th>Description</th>\n";
2772                 } else {
2773                         print "<th>" .
2774                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2775                                        -class => "header"}, "Description") .
2776                               "</th>\n";
2777                 }
2778                 if ($order eq "owner") {
2779                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2780                         print "<th>Owner</th>\n";
2781                 } else {
2782                         print "<th>" .
2783                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2784                                        -class => "header"}, "Owner") .
2785                               "</th>\n";
2786                 }
2787                 if ($order eq "age") {
2788                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2789                         print "<th>Last Change</th>\n";
2790                 } else {
2791                         print "<th>" .
2792                               $cgi->a({-href => href(project=>undef, order=>'age'),
2793                                        -class => "header"}, "Last Change") .
2794                               "</th>\n";
2795                 }
2796                 print "<th></th>\n" .
2797                       "</tr>\n";
2798         }
2799         my $alternate = 1;
2800         for (my $i = $from; $i <= $to; $i++) {
2801                 my $pr = $projects[$i];
2802                 if ($alternate) {
2803                         print "<tr class=\"dark\">\n";
2804                 } else {
2805                         print "<tr class=\"light\">\n";
2806                 }
2807                 $alternate ^= 1;
2808                 if ($check_forks) {
2809                         print "<td>";
2810                         if ($pr->{'forks'}) {
2811                                 print "<!-- $pr->{'forks'} -->\n";
2812                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2813                         }
2814                         print "</td>\n";
2815                 }
2816                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2817                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2818                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2819                                         -class => "list", -title => $pr->{'descr_long'}},
2820                                         esc_html($pr->{'descr'})) . "</td>\n" .
2821                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2822                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2823                       $pr->{'age_string'} . "</td>\n" .
2824                       "<td class=\"link\">" .
2825                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2826                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2827                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2828                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2829                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2830                       "</td>\n" .
2831                       "</tr>\n";
2832         }
2833         if (defined $extra) {
2834                 print "<tr>\n";
2835                 if ($check_forks) {
2836                         print "<td></td>\n";
2837                 }
2838                 print "<td colspan=\"5\">$extra</td>\n" .
2839                       "</tr>\n";
2840         }
2841         print "</table>\n";
2842 }
2843
2844 sub git_shortlog_body {
2845         # uses global variable $project
2846         my ($commitlist, $from, $to, $refs, $extra) = @_;
2847
2848         my $have_snapshot = gitweb_have_snapshot();
2849
2850         $from = 0 unless defined $from;
2851         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2852
2853         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2854         my $alternate = 1;
2855         for (my $i = $from; $i <= $to; $i++) {
2856                 my %co = %{$commitlist->[$i]};
2857                 my $commit = $co{'id'};
2858                 my $ref = format_ref_marker($refs, $commit);
2859                 if ($alternate) {
2860                         print "<tr class=\"dark\">\n";
2861                 } else {
2862                         print "<tr class=\"light\">\n";
2863                 }
2864                 $alternate ^= 1;
2865                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2866                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2867                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2868                       "<td>";
2869                 print format_subject_html($co{'title'}, $co{'title_short'},
2870                                           href(action=>"commit", hash=>$commit), $ref);
2871                 print "</td>\n" .
2872                       "<td class=\"link\">" .
2873                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2874                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2875                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2876                 if ($have_snapshot) {
2877                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2878                 }
2879                 print "</td>\n" .
2880                       "</tr>\n";
2881         }
2882         if (defined $extra) {
2883                 print "<tr>\n" .
2884                       "<td colspan=\"4\">$extra</td>\n" .
2885                       "</tr>\n";
2886         }
2887         print "</table>\n";
2888 }
2889
2890 sub git_history_body {
2891         # Warning: assumes constant type (blob or tree) during history
2892         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2893
2894         $from = 0 unless defined $from;
2895         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2896
2897         print "<table class=\"history\" cellspacing=\"0\">\n";
2898         my $alternate = 1;
2899         for (my $i = $from; $i <= $to; $i++) {
2900                 my %co = %{$commitlist->[$i]};
2901                 if (!%co) {
2902                         next;
2903                 }
2904                 my $commit = $co{'id'};
2905
2906                 my $ref = format_ref_marker($refs, $commit);
2907
2908                 if ($alternate) {
2909                         print "<tr class=\"dark\">\n";
2910                 } else {
2911                         print "<tr class=\"light\">\n";
2912                 }
2913                 $alternate ^= 1;
2914                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2915                       # shortlog uses      chop_str($co{'author_name'}, 10)
2916                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2917                       "<td>";
2918                 # originally git_history used chop_str($co{'title'}, 50)
2919                 print format_subject_html($co{'title'}, $co{'title_short'},
2920                                           href(action=>"commit", hash=>$commit), $ref);
2921                 print "</td>\n" .
2922                       "<td class=\"link\">" .
2923                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2924                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2925
2926                 if ($ftype eq 'blob') {
2927                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2928                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2929                         if (defined $blob_current && defined $blob_parent &&
2930                                         $blob_current ne $blob_parent) {
2931                                 print " | " .
2932                                         $cgi->a({-href => href(action=>"blobdiff",
2933                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2934                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2935                                                                file_name=>$file_name)},
2936                                                 "diff to current");
2937                         }
2938                 }
2939                 print "</td>\n" .
2940                       "</tr>\n";
2941         }
2942         if (defined $extra) {
2943                 print "<tr>\n" .
2944                       "<td colspan=\"4\">$extra</td>\n" .
2945                       "</tr>\n";
2946         }
2947         print "</table>\n";
2948 }
2949
2950 sub git_tags_body {
2951         # uses global variable $project
2952         my ($taglist, $from, $to, $extra) = @_;
2953         $from = 0 unless defined $from;
2954         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2955
2956         print "<table class=\"tags\" cellspacing=\"0\">\n";
2957         my $alternate = 1;
2958         for (my $i = $from; $i <= $to; $i++) {
2959                 my $entry = $taglist->[$i];
2960                 my %tag = %$entry;
2961                 my $comment = $tag{'subject'};
2962                 my $comment_short;
2963                 if (defined $comment) {
2964                         $comment_short = chop_str($comment, 30, 5);
2965                 }
2966                 if ($alternate) {
2967                         print "<tr class=\"dark\">\n";
2968                 } else {
2969                         print "<tr class=\"light\">\n";
2970                 }
2971                 $alternate ^= 1;
2972                 if (defined $tag{'age'}) {
2973                         print "<td><i>$tag{'age'}</i></td>\n";
2974                 } else {
2975                         print "<td></td>\n";
2976                 }
2977                 print "<td>" .
2978                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2979                                -class => "list name"}, esc_html($tag{'name'})) .
2980                       "</td>\n" .
2981                       "<td>";
2982                 if (defined $comment) {
2983                         print format_subject_html($comment, $comment_short,
2984                                                   href(action=>"tag", hash=>$tag{'id'}));
2985                 }
2986                 print "</td>\n" .
2987                       "<td class=\"selflink\">";
2988                 if ($tag{'type'} eq "tag") {
2989                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2990                 } else {
2991                         print "&nbsp;";
2992                 }
2993                 print "</td>\n" .
2994                       "<td class=\"link\">" . " | " .
2995                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2996                 if ($tag{'reftype'} eq "commit") {
2997                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2998                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2999                 } elsif ($tag{'reftype'} eq "blob") {
3000                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3001                 }
3002                 print "</td>\n" .
3003                       "</tr>";
3004         }
3005         if (defined $extra) {
3006                 print "<tr>\n" .
3007                       "<td colspan=\"5\">$extra</td>\n" .
3008                       "</tr>\n";
3009         }
3010         print "</table>\n";
3011 }
3012
3013 sub git_heads_body {
3014         # uses global variable $project
3015         my ($headlist, $head, $from, $to, $extra) = @_;
3016         $from = 0 unless defined $from;
3017         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3018
3019         print "<table class=\"heads\" cellspacing=\"0\">\n";
3020         my $alternate = 1;
3021         for (my $i = $from; $i <= $to; $i++) {
3022                 my $entry = $headlist->[$i];
3023                 my %ref = %$entry;
3024                 my $curr = $ref{'id'} eq $head;
3025                 if ($alternate) {
3026                         print "<tr class=\"dark\">\n";
3027                 } else {
3028                         print "<tr class=\"light\">\n";
3029                 }
3030                 $alternate ^= 1;
3031                 print "<td><i>$ref{'age'}</i></td>\n" .
3032                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3033                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3034                                -class => "list name"},esc_html($ref{'name'})) .
3035                       "</td>\n" .
3036                       "<td class=\"link\">" .
3037                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3038                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3039                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3040                       "</td>\n" .
3041                       "</tr>";
3042         }
3043         if (defined $extra) {
3044                 print "<tr>\n" .
3045                       "<td colspan=\"3\">$extra</td>\n" .
3046                       "</tr>\n";
3047         }
3048         print "</table>\n";
3049 }
3050
3051 sub git_search_grep_body {
3052         my ($commitlist, $from, $to, $extra) = @_;
3053         $from = 0 unless defined $from;
3054         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3055
3056         print "<table class=\"grep\" cellspacing=\"0\">\n";
3057         my $alternate = 1;
3058         for (my $i = $from; $i <= $to; $i++) {
3059                 my %co = %{$commitlist->[$i]};
3060                 if (!%co) {
3061                         next;
3062                 }
3063                 my $commit = $co{'id'};
3064                 if ($alternate) {
3065                         print "<tr class=\"dark\">\n";
3066                 } else {
3067                         print "<tr class=\"light\">\n";
3068                 }
3069                 $alternate ^= 1;
3070                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3071                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3072                       "<td>" .
3073                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3074                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3075                 my $comment = $co{'comment'};
3076                 foreach my $line (@$comment) {
3077                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3078                                 my $lead = esc_html($1) || "";
3079                                 $lead = chop_str($lead, 30, 10);
3080                                 my $match = esc_html($2) || "";
3081                                 my $trail = esc_html($3) || "";
3082                                 $trail = chop_str($trail, 30, 10);
3083                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3084                                 print chop_str($text, 80, 5) . "<br/>\n";
3085                         }
3086                 }
3087                 print "</td>\n" .
3088                       "<td class=\"link\">" .
3089                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3090                       " | " .
3091                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3092                 print "</td>\n" .
3093                       "</tr>\n";
3094         }
3095         if (defined $extra) {
3096                 print "<tr>\n" .
3097                       "<td colspan=\"3\">$extra</td>\n" .
3098                       "</tr>\n";
3099         }
3100         print "</table>\n";
3101 }
3102
3103 ## ======================================================================
3104 ## ======================================================================
3105 ## actions
3106
3107 sub git_project_list {
3108         my $order = $cgi->param('o');
3109         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3110                 die_error(undef, "Unknown order parameter");
3111         }
3112
3113         my @list = git_get_projects_list();
3114         if (!@list) {
3115                 die_error(undef, "No projects found");
3116         }
3117
3118         git_header_html();
3119         if (-f $home_text) {
3120                 print "<div class=\"index_include\">\n";
3121                 open (my $fd, $home_text);
3122                 print <$fd>;
3123                 close $fd;
3124                 print "</div>\n";
3125         }
3126         git_project_list_body(\@list, $order);
3127         git_footer_html();
3128 }
3129
3130 sub git_forks {
3131         my $order = $cgi->param('o');
3132         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3133                 die_error(undef, "Unknown order parameter");
3134         }
3135
3136         my @list = git_get_projects_list($project);
3137         if (!@list) {
3138                 die_error(undef, "No forks found");
3139         }
3140
3141         git_header_html();
3142         git_print_page_nav('','');
3143         git_print_header_div('summary', "$project forks");
3144         git_project_list_body(\@list, $order);
3145         git_footer_html();
3146 }
3147
3148 sub git_project_index {
3149         my @projects = git_get_projects_list($project);
3150
3151         print $cgi->header(
3152                 -type => 'text/plain',
3153                 -charset => 'utf-8',
3154                 -content_disposition => 'inline; filename="index.aux"');
3155
3156         foreach my $pr (@projects) {
3157                 if (!exists $pr->{'owner'}) {
3158                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3159                 }
3160
3161                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3162                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3163                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3164                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3165                 $path  =~ s/ /\+/g;
3166                 $owner =~ s/ /\+/g;
3167
3168                 print "$path $owner\n";
3169         }
3170 }
3171
3172 sub git_summary {
3173         my $descr = git_get_project_description($project) || "none";
3174         my %co = parse_commit("HEAD");
3175         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3176         my $head = $co{'id'};
3177
3178         my $owner = git_get_project_owner($project);
3179
3180         my $refs = git_get_references();
3181         # These get_*_list functions return one more to allow us to see if
3182         # there are more ...
3183         my @taglist  = git_get_tags_list(16);
3184         my @headlist = git_get_heads_list(16);
3185         my @forklist;
3186         my ($check_forks) = gitweb_check_feature('forks');
3187
3188         if ($check_forks) {
3189                 @forklist = git_get_projects_list($project);
3190         }
3191
3192         git_header_html();
3193         git_print_page_nav('summary','', $head);
3194
3195         print "<div class=\"title\">&nbsp;</div>\n";
3196         print "<table cellspacing=\"0\">\n" .
3197               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3198               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3199               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3200         # use per project git URL list in $projectroot/$project/cloneurl
3201         # or make project git URL from git base URL and project name
3202         my $url_tag = "URL";
3203         my @url_list = git_get_project_url_list($project);
3204         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3205         foreach my $git_url (@url_list) {
3206                 next unless $git_url;
3207                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3208                 $url_tag = "";
3209         }
3210         print "</table>\n";
3211
3212         if (-s "$projectroot/$project/README.html") {
3213                 if (open my $fd, "$projectroot/$project/README.html") {
3214                         print "<div class=\"title\">readme</div>\n";
3215                         print $_ while (<$fd>);
3216                         close $fd;
3217                 }
3218         }
3219
3220         # we need to request one more than 16 (0..15) to check if
3221         # those 16 are all
3222         my @commitlist = parse_commits($head, 17);
3223         git_print_header_div('shortlog');
3224         git_shortlog_body(\@commitlist, 0, 15, $refs,
3225                           $#commitlist <=  15 ? undef :
3226                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3227
3228         if (@taglist) {
3229                 git_print_header_div('tags');
3230                 git_tags_body(\@taglist, 0, 15,
3231                               $#taglist <=  15 ? undef :
3232                               $cgi->a({-href => href(action=>"tags")}, "..."));
3233         }
3234
3235         if (@headlist) {
3236                 git_print_header_div('heads');
3237                 git_heads_body(\@headlist, $head, 0, 15,
3238                                $#headlist <= 15 ? undef :
3239                                $cgi->a({-href => href(action=>"heads")}, "..."));
3240         }
3241
3242         if (@forklist) {
3243                 git_print_header_div('forks');
3244                 git_project_list_body(\@forklist, undef, 0, 15,
3245                                       $#forklist <= 15 ? undef :
3246                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3247                                       'noheader');
3248         }
3249
3250         git_footer_html();
3251 }
3252
3253 sub git_tag {
3254         my $head = git_get_head_hash($project);
3255         git_header_html();
3256         git_print_page_nav('','', $head,undef,$head);
3257         my %tag = parse_tag($hash);
3258         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3259         print "<div class=\"title_text\">\n" .
3260               "<table cellspacing=\"0\">\n" .
3261               "<tr>\n" .
3262               "<td>object</td>\n" .
3263               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3264                                $tag{'object'}) . "</td>\n" .
3265               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3266                                               $tag{'type'}) . "</td>\n" .
3267               "</tr>\n";
3268         if (defined($tag{'author'})) {
3269                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3270                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3271                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3272                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3273                         "</td></tr>\n";
3274         }
3275         print "</table>\n\n" .
3276               "</div>\n";
3277         print "<div class=\"page_body\">";
3278         my $comment = $tag{'comment'};
3279         foreach my $line (@$comment) {
3280                 chomp $line;
3281                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3282         }
3283         print "</div>\n";
3284         git_footer_html();
3285 }
3286
3287 sub git_blame2 {
3288         my $fd;
3289         my $ftype;
3290
3291         my ($have_blame) = gitweb_check_feature('blame');
3292         if (!$have_blame) {
3293                 die_error('403 Permission denied', "Permission denied");
3294         }
3295         die_error('404 Not Found', "File name not defined") if (!$file_name);
3296         $hash_base ||= git_get_head_hash($project);
3297         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3298         my %co = parse_commit($hash_base)
3299                 or die_error(undef, "Reading commit failed");
3300         if (!defined $hash) {
3301                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3302                         or die_error(undef, "Error looking up file");
3303         }
3304         $ftype = git_get_type($hash);
3305         if ($ftype !~ "blob") {
3306                 die_error('400 Bad Request', "Object is not a blob");
3307         }
3308         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3309               $file_name, $hash_base)
3310                 or die_error(undef, "Open git-blame failed");
3311         git_header_html();
3312         my $formats_nav =
3313                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3314                         "blob") .
3315                 " | " .
3316                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3317                         "history") .
3318                 " | " .
3319                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3320                         "HEAD");
3321         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3322         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3323         git_print_page_path($file_name, $ftype, $hash_base);
3324         my @rev_color = (qw(light2 dark2));
3325         my $num_colors = scalar(@rev_color);
3326         my $current_color = 0;
3327         my $last_rev;
3328         print <<HTML;
3329 <div class="page_body">
3330 <table class="blame">
3331 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3332 HTML
3333         my %metainfo = ();
3334         while (1) {
3335                 $_ = <$fd>;
3336                 last unless defined $_;
3337                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3338                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3339                 if (!exists $metainfo{$full_rev}) {
3340                         $metainfo{$full_rev} = {};
3341                 }
3342                 my $meta = $metainfo{$full_rev};
3343                 while (<$fd>) {
3344                         last if (s/^\t//);
3345                         if (/^(\S+) (.*)$/) {
3346                                 $meta->{$1} = $2;
3347                         }
3348                 }
3349                 my $data = $_;
3350                 chomp $data;
3351                 my $rev = substr($full_rev, 0, 8);
3352                 my $author = $meta->{'author'};
3353                 my %date = parse_date($meta->{'author-time'},
3354                                       $meta->{'author-tz'});
3355                 my $date = $date{'iso-tz'};
3356                 if ($group_size) {
3357                         $current_color = ++$current_color % $num_colors;
3358                 }
3359                 print "<tr class=\"$rev_color[$current_color]\">\n";
3360                 if ($group_size) {
3361                         print "<td class=\"sha1\"";
3362                         print " title=\"". esc_html($author) . ", $date\"";
3363                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3364                         print ">";
3365                         print $cgi->a({-href => href(action=>"commit",
3366                                                      hash=>$full_rev,
3367                                                      file_name=>$file_name)},
3368                                       esc_html($rev));
3369                         print "</td>\n";
3370                 }
3371                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3372                         or die_error(undef, "Open git-rev-parse failed");
3373                 my $parent_commit = <$dd>;
3374                 close $dd;
3375                 chomp($parent_commit);
3376                 my $blamed = href(action => 'blame',
3377                                   file_name => $meta->{'filename'},
3378                                   hash_base => $parent_commit);
3379                 print "<td class=\"linenr\">";
3380                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3381                                 -id => "l$lineno",
3382                                 -class => "linenr" },
3383                               esc_html($lineno));
3384                 print "</td>";
3385                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3386                 print "</tr>\n";
3387         }
3388         print "</table>\n";
3389         print "</div>";
3390         close $fd
3391                 or print "Reading blob failed\n";
3392         git_footer_html();
3393 }
3394
3395 sub git_blame {
3396         my $fd;
3397
3398         my ($have_blame) = gitweb_check_feature('blame');
3399         if (!$have_blame) {
3400                 die_error('403 Permission denied', "Permission denied");
3401         }
3402         die_error('404 Not Found', "File name not defined") if (!$file_name);
3403         $hash_base ||= git_get_head_hash($project);
3404         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3405         my %co = parse_commit($hash_base)
3406                 or die_error(undef, "Reading commit failed");
3407         if (!defined $hash) {
3408                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3409                         or die_error(undef, "Error lookup file");
3410         }
3411         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3412                 or die_error(undef, "Open git-annotate failed");
3413         git_header_html();
3414         my $formats_nav =
3415                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3416                         "blob") .
3417                 " | " .
3418                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3419                         "history") .
3420                 " | " .
3421                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3422                         "HEAD");
3423         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3424         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3425         git_print_page_path($file_name, 'blob', $hash_base);
3426         print "<div class=\"page_body\">\n";
3427         print <<HTML;
3428 <table class="blame">
3429   <tr>
3430     <th>Commit</th>
3431     <th>Age</th>
3432     <th>Author</th>
3433     <th>Line</th>
3434     <th>Data</th>
3435   </tr>
3436 HTML
3437         my @line_class = (qw(light dark));
3438         my $line_class_len = scalar (@line_class);
3439         my $line_class_num = $#line_class;
3440         while (my $line = <$fd>) {
3441                 my $long_rev;
3442                 my $short_rev;
3443                 my $author;
3444                 my $time;
3445                 my $lineno;
3446                 my $data;
3447                 my $age;
3448                 my $age_str;
3449                 my $age_class;
3450
3451                 chomp $line;
3452                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3453
3454                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3455                         $long_rev = $1;
3456                         $author   = $2;
3457                         $time     = $3;
3458                         $lineno   = $4;
3459                         $data     = $5;
3460                 } else {
3461                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3462                         next;
3463                 }
3464                 $short_rev  = substr ($long_rev, 0, 8);
3465                 $age        = time () - $time;
3466                 $age_str    = age_string ($age);
3467                 $age_str    =~ s/ /&nbsp;/g;
3468                 $age_class  = age_class($age);
3469                 $author     = esc_html ($author);
3470                 $author     =~ s/ /&nbsp;/g;
3471
3472                 $data = untabify($data);
3473                 $data = esc_html ($data);
3474
3475                 print <<HTML;
3476   <tr class="$line_class[$line_class_num]">
3477     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3478     <td class="$age_class">$age_str</td>
3479     <td>$author</td>
3480     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3481     <td class="pre">$data</td>
3482   </tr>
3483 HTML
3484         } # while (my $line = <$fd>)
3485         print "</table>\n\n";
3486         close $fd
3487                 or print "Reading blob failed.\n";
3488         print "</div>";
3489         git_footer_html();
3490 }
3491
3492 sub git_tags {
3493         my $head = git_get_head_hash($project);
3494         git_header_html();
3495         git_print_page_nav('','', $head,undef,$head);
3496         git_print_header_div('summary', $project);
3497
3498         my @tagslist = git_get_tags_list();
3499         if (@tagslist) {
3500                 git_tags_body(\@tagslist);
3501         }
3502         git_footer_html();
3503 }
3504
3505 sub git_heads {
3506         my $head = git_get_head_hash($project);
3507         git_header_html();
3508         git_print_page_nav('','', $head,undef,$head);
3509         git_print_header_div('summary', $project);
3510
3511         my @headslist = git_get_heads_list();
3512         if (@headslist) {
3513                 git_heads_body(\@headslist, $head);
3514         }
3515         git_footer_html();
3516 }
3517
3518 sub git_blob_plain {
3519         my $expires;
3520
3521         if (!defined $hash) {
3522                 if (defined $file_name) {
3523                         my $base = $hash_base || git_get_head_hash($project);
3524                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3525                                 or die_error(undef, "Error lookup file");
3526                 } else {
3527                         die_error(undef, "No file name defined");
3528                 }
3529         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3530                 # blobs defined by non-textual hash id's can be cached
3531                 $expires = "+1d";
3532         }
3533
3534         my $type = shift;
3535         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3536                 or die_error(undef, "Couldn't cat $file_name, $hash");
3537
3538         $type ||= blob_mimetype($fd, $file_name);
3539
3540         # save as filename, even when no $file_name is given
3541         my $save_as = "$hash";
3542         if (defined $file_name) {
3543                 $save_as = $file_name;
3544         } elsif ($type =~ m/^text\//) {
3545                 $save_as .= '.txt';
3546         }
3547
3548         print $cgi->header(
3549                 -type => "$type",
3550                 -expires=>$expires,
3551                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3552         undef $/;
3553         binmode STDOUT, ':raw';
3554         print <$fd>;
3555         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3556         $/ = "\n";
3557         close $fd;
3558 }
3559
3560 sub git_blob {
3561         my $expires;
3562
3563         if (!defined $hash) {
3564                 if (defined $file_name) {
3565                         my $base = $hash_base || git_get_head_hash($project);
3566                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3567                                 or die_error(undef, "Error lookup file");
3568                 } else {
3569                         die_error(undef, "No file name defined");
3570                 }
3571         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3572                 # blobs defined by non-textual hash id's can be cached
3573                 $expires = "+1d";
3574         }
3575
3576         my ($have_blame) = gitweb_check_feature('blame');
3577         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3578                 or die_error(undef, "Couldn't cat $file_name, $hash");
3579         my $mimetype = blob_mimetype($fd, $file_name);
3580         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3581                 close $fd;
3582                 return git_blob_plain($mimetype);
3583         }
3584         # we can have blame only for text/* mimetype
3585         $have_blame &&= ($mimetype =~ m!^text/!);
3586
3587         git_header_html(undef, $expires);
3588         my $formats_nav = '';
3589         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3590                 if (defined $file_name) {
3591                         if ($have_blame) {
3592                                 $formats_nav .=
3593                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3594                                                                hash=>$hash, file_name=>$file_name)},
3595                                                 "blame") .
3596                                         " | ";
3597                         }
3598                         $formats_nav .=
3599                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3600                                                        hash=>$hash, file_name=>$file_name)},
3601                                         "history") .
3602                                 " | " .
3603                                 $cgi->a({-href => href(action=>"blob_plain",
3604                                                        hash=>$hash, file_name=>$file_name)},
3605                                         "raw") .
3606                                 " | " .
3607                                 $cgi->a({-href => href(action=>"blob",
3608                                                        hash_base=>"HEAD", file_name=>$file_name)},
3609                                         "HEAD");
3610                 } else {
3611                         $formats_nav .=
3612                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3613                 }
3614                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3615                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3616         } else {
3617                 print "<div class=\"page_nav\">\n" .
3618                       "<br/><br/></div>\n" .
3619                       "<div class=\"title\">$hash</div>\n";
3620         }
3621         git_print_page_path($file_name, "blob", $hash_base);
3622         print "<div class=\"page_body\">\n";
3623         if ($mimetype =~ m!^text/!) {
3624                 my $nr;
3625                 while (my $line = <$fd>) {
3626                         chomp $line;
3627                         $nr++;
3628                         $line = untabify($line);
3629                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3630                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3631                 }
3632         } elsif ($mimetype =~ m!^image/!) {
3633                 print qq!<img type="$mimetype"!;
3634                 if ($file_name) {
3635                         print qq! alt="$file_name" title="$file_name"!;
3636                 }
3637                 print qq! src="! .
3638                       href(action=>"blob_plain", hash=>$hash,
3639                            hash_base=>$hash_base, file_name=>$file_name) .
3640                       qq!" />\n!;
3641         }
3642         close $fd
3643                 or print "Reading blob failed.\n";
3644         print "</div>";
3645         git_footer_html();
3646 }
3647
3648 sub git_tree {
3649         my $have_snapshot = gitweb_have_snapshot();
3650
3651         if (!defined $hash_base) {
3652                 $hash_base = "HEAD";
3653         }
3654         if (!defined $hash) {
3655                 if (defined $file_name) {
3656                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3657                 } else {
3658                         $hash = $hash_base;
3659                 }
3660         }
3661         $/ = "\0";
3662         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3663                 or die_error(undef, "Open git-ls-tree failed");
3664         my @entries = map { chomp; $_ } <$fd>;
3665         close $fd or die_error(undef, "Reading tree failed");
3666         $/ = "\n";
3667
3668         my $refs = git_get_references();
3669         my $ref = format_ref_marker($refs, $hash_base);
3670         git_header_html();
3671         my $basedir = '';
3672         my ($have_blame) = gitweb_check_feature('blame');
3673         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3674                 my @views_nav = ();
3675                 if (defined $file_name) {
3676                         push @views_nav,
3677                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3678                                                        hash=>$hash, file_name=>$file_name)},
3679                                         "history"),
3680                                 $cgi->a({-href => href(action=>"tree",
3681                                                        hash_base=>"HEAD", file_name=>$file_name)},
3682                                         "HEAD"),
3683                 }
3684                 if ($have_snapshot) {
3685                         # FIXME: Should be available when we have no hash base as well.
3686                         push @views_nav,
3687                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3688                                         "snapshot");
3689                 }
3690                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3691                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3692         } else {
3693                 undef $hash_base;
3694                 print "<div class=\"page_nav\">\n";
3695                 print "<br/><br/></div>\n";
3696                 print "<div class=\"title\">$hash</div>\n";
3697         }
3698         if (defined $file_name) {
3699                 $basedir = $file_name;
3700                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3701                         $basedir .= '/';
3702                 }
3703         }
3704         git_print_page_path($file_name, 'tree', $hash_base);
3705         print "<div class=\"page_body\">\n";
3706         print "<table cellspacing=\"0\">\n";
3707         my $alternate = 1;
3708         # '..' (top directory) link if possible
3709         if (defined $hash_base &&
3710             defined $file_name && $file_name =~ m![^/]+$!) {
3711                 if ($alternate) {
3712                         print "<tr class=\"dark\">\n";
3713                 } else {
3714                         print "<tr class=\"light\">\n";
3715                 }
3716                 $alternate ^= 1;
3717
3718                 my $up = $file_name;
3719                 $up =~ s!/?[^/]+$!!;
3720                 undef $up unless $up;
3721                 # based on git_print_tree_entry
3722                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3723                 print '<td class="list">';
3724                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3725                                              file_name=>$up)},
3726                               "..");
3727                 print "</td>\n";
3728                 print "<td class=\"link\"></td>\n";
3729
3730                 print "</tr>\n";
3731         }
3732         foreach my $line (@entries) {
3733                 my %t = parse_ls_tree_line($line, -z => 1);
3734
3735                 if ($alternate) {
3736                         print "<tr class=\"dark\">\n";
3737                 } else {
3738                         print "<tr class=\"light\">\n";
3739                 }
3740                 $alternate ^= 1;
3741
3742                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3743
3744                 print "</tr>\n";
3745         }
3746         print "</table>\n" .
3747               "</div>";
3748         git_footer_html();
3749 }
3750
3751 sub git_snapshot {
3752         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3753         my $have_snapshot = (defined $ctype && defined $suffix);
3754         if (!$have_snapshot) {
3755                 die_error('403 Permission denied', "Permission denied");
3756         }
3757
3758         if (!defined $hash) {
3759                 $hash = git_get_head_hash($project);
3760         }
3761
3762         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3763
3764         print $cgi->header(
3765                 -type => "application/$ctype",
3766                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3767                 -status => '200 OK');
3768
3769         my $git = git_cmd_str();
3770         my $name = $project;
3771         $name =~ s/\047/\047\\\047\047/g;
3772         open my $fd, "-|",
3773                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3774                 or die_error(undef, "Execute git-tar-tree failed");
3775         binmode STDOUT, ':raw';
3776         print <$fd>;
3777         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3778         close $fd;
3779
3780 }
3781
3782 sub git_log {
3783         my $head = git_get_head_hash($project);
3784         if (!defined $hash) {
3785                 $hash = $head;
3786         }
3787         if (!defined $page) {
3788                 $page = 0;
3789         }
3790         my $refs = git_get_references();
3791
3792         my @commitlist = parse_commits($hash, 101, (100 * $page));
3793
3794         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3795
3796         git_header_html();
3797         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3798
3799         if (!@commitlist) {
3800                 my %co = parse_commit($hash);
3801
3802                 git_print_header_div('summary', $project);
3803                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3804         }
3805         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3806         for (my $i = 0; $i <= $to; $i++) {
3807                 my %co = %{$commitlist[$i]};
3808                 next if !%co;
3809                 my $commit = $co{'id'};
3810                 my $ref = format_ref_marker($refs, $commit);
3811                 my %ad = parse_date($co{'author_epoch'});
3812                 git_print_header_div('commit',
3813                                "<span class=\"age\">$co{'age_string'}</span>" .
3814                                esc_html($co{'title'}) . $ref,
3815                                $commit);
3816                 print "<div class=\"title_text\">\n" .
3817                       "<div class=\"log_link\">\n" .
3818                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3819                       " | " .
3820                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3821                       " | " .
3822                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3823                       "<br/>\n" .
3824                       "</div>\n" .
3825                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3826                       "</div>\n";
3827
3828                 print "<div class=\"log_body\">\n";
3829                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3830                 print "</div>\n";
3831         }
3832         if ($#commitlist >= 100) {
3833                 print "<div class=\"page_nav\">\n";
3834                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3835                                -accesskey => "n", -title => "Alt-n"}, "next");
3836                 print "</div>\n";
3837         }
3838         git_footer_html();
3839 }
3840
3841 sub git_commit {
3842         $hash ||= $hash_base || "HEAD";
3843         my %co = parse_commit($hash);
3844         if (!%co) {
3845                 die_error(undef, "Unknown commit object");
3846         }
3847         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3848         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3849
3850         my $parent  = $co{'parent'};
3851         my $parents = $co{'parents'}; # listref
3852
3853         # we need to prepare $formats_nav before any parameter munging
3854         my $formats_nav;
3855         if (!defined $parent) {
3856                 # --root commitdiff
3857                 $formats_nav .= '(initial)';
3858         } elsif (@$parents == 1) {
3859                 # single parent commit
3860                 $formats_nav .=
3861                         '(parent: ' .
3862                         $cgi->a({-href => href(action=>"commit",
3863                                                hash=>$parent)},
3864                                 esc_html(substr($parent, 0, 7))) .
3865                         ')';
3866         } else {
3867                 # merge commit
3868                 $formats_nav .=
3869                         '(merge: ' .
3870                         join(' ', map {
3871                                 $cgi->a({-href => href(action=>"commit",
3872                                                        hash=>$_)},
3873                                         esc_html(substr($_, 0, 7)));
3874                         } @$parents ) .
3875                         ')';
3876         }
3877
3878         if (!defined $parent) {
3879                 $parent = "--root";
3880         }
3881         my @difftree;
3882         if (@$parents <= 1) {
3883                 # difftree output is not printed for merges
3884                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3885                         @diff_opts, $parent, $hash, "--"
3886                         or die_error(undef, "Open git-diff-tree failed");
3887                 @difftree = map { chomp; $_ } <$fd>;
3888                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3889         }
3890
3891         # non-textual hash id's can be cached
3892         my $expires;
3893         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3894                 $expires = "+1d";
3895         }
3896         my $refs = git_get_references();
3897         my $ref = format_ref_marker($refs, $co{'id'});
3898
3899         my $have_snapshot = gitweb_have_snapshot();
3900
3901         git_header_html(undef, $expires);
3902         git_print_page_nav('commit', '',
3903                            $hash, $co{'tree'}, $hash,
3904                            $formats_nav);
3905
3906         if (defined $co{'parent'}) {
3907                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3908         } else {
3909                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3910         }
3911         print "<div class=\"title_text\">\n" .
3912               "<table cellspacing=\"0\">\n";
3913         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3914               "<tr>" .
3915               "<td></td><td> $ad{'rfc2822'}";
3916         if ($ad{'hour_local'} < 6) {
3917                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3918                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3919         } else {
3920                 printf(" (%02d:%02d %s)",
3921                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3922         }
3923         print "</td>" .
3924               "</tr>\n";
3925         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3926         print "<tr><td></td><td> $cd{'rfc2822'}" .
3927               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3928               "</td></tr>\n";
3929         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3930         print "<tr>" .
3931               "<td>tree</td>" .
3932               "<td class=\"sha1\">" .
3933               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3934                        class => "list"}, $co{'tree'}) .
3935               "</td>" .
3936               "<td class=\"link\">" .
3937               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3938                       "tree");
3939         if ($have_snapshot) {
3940                 print " | " .
3941                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3942         }
3943         print "</td>" .
3944               "</tr>\n";
3945
3946         foreach my $par (@$parents) {
3947                 print "<tr>" .
3948                       "<td>parent</td>" .
3949                       "<td class=\"sha1\">" .
3950                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3951                                class => "list"}, $par) .
3952                       "</td>" .
3953                       "<td class=\"link\">" .
3954                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3955                       " | " .
3956                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3957                       "</td>" .
3958                       "</tr>\n";
3959         }
3960         print "</table>".
3961               "</div>\n";
3962
3963         print "<div class=\"page_body\">\n";
3964         git_print_log($co{'comment'});
3965         print "</div>\n";
3966
3967         if (@$parents <= 1) {
3968                 # do not output difftree/whatchanged for merges
3969                 git_difftree_body(\@difftree, $hash, $parent);
3970         }
3971
3972         git_footer_html();
3973 }
3974
3975 sub git_object {
3976         # object is defined by:
3977         # - hash or hash_base alone
3978         # - hash_base and file_name
3979         my $type;
3980
3981         # - hash or hash_base alone
3982         if ($hash || ($hash_base && !defined $file_name)) {
3983                 my $object_id = $hash || $hash_base;
3984
3985                 my $git_command = git_cmd_str();
3986                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3987                         or die_error('404 Not Found', "Object does not exist");
3988                 $type = <$fd>;
3989                 chomp $type;
3990                 close $fd
3991                         or die_error('404 Not Found', "Object does not exist");
3992
3993         # - hash_base and file_name
3994         } elsif ($hash_base && defined $file_name) {
3995                 $file_name =~ s,/+$,,;
3996
3997                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3998                         or die_error('404 Not Found', "Base object does not exist");
3999
4000                 # here errors should not hapen
4001                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4002                         or die_error(undef, "Open git-ls-tree failed");
4003                 my $line = <$fd>;
4004                 close $fd;
4005
4006                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4007                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4008                         die_error('404 Not Found', "File or directory for given base does not exist");
4009                 }
4010                 $type = $2;
4011                 $hash = $3;
4012         } else {
4013                 die_error('404 Not Found', "Not enough information to find object");
4014         }
4015
4016         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4017                                           hash=>$hash, hash_base=>$hash_base,
4018                                           file_name=>$file_name),
4019                              -status => '302 Found');
4020 }
4021
4022 sub git_blobdiff {
4023         my $format = shift || 'html';
4024
4025         my $fd;
4026         my @difftree;
4027         my %diffinfo;
4028         my $expires;
4029
4030         # preparing $fd and %diffinfo for git_patchset_body
4031         # new style URI
4032         if (defined $hash_base && defined $hash_parent_base) {
4033                 if (defined $file_name) {
4034                         # read raw output
4035                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4036                                 $hash_parent_base, $hash_base,
4037                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4038                                 or die_error(undef, "Open git-diff-tree failed");
4039                         @difftree = map { chomp; $_ } <$fd>;
4040                         close $fd
4041                                 or die_error(undef, "Reading git-diff-tree failed");
4042                         @difftree
4043                                 or die_error('404 Not Found', "Blob diff not found");
4044
4045                 } elsif (defined $hash &&
4046                          $hash =~ /[0-9a-fA-F]{40}/) {
4047                         # try to find filename from $hash
4048
4049                         # read filtered raw output
4050                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4051                                 $hash_parent_base, $hash_base, "--"
4052                                 or die_error(undef, "Open git-diff-tree failed");
4053                         @difftree =
4054                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4055                                 # $hash == to_id
4056                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4057                                 map { chomp; $_ } <$fd>;
4058                         close $fd
4059                                 or die_error(undef, "Reading git-diff-tree failed");
4060                         @difftree
4061                                 or die_error('404 Not Found', "Blob diff not found");
4062
4063                 } else {
4064                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4065                 }
4066
4067                 if (@difftree > 1) {
4068                         die_error('404 Not Found', "Ambiguous blob diff specification");
4069                 }
4070
4071                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4072                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4073                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4074
4075                 $hash_parent ||= $diffinfo{'from_id'};
4076                 $hash        ||= $diffinfo{'to_id'};
4077
4078                 # non-textual hash id's can be cached
4079                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4080                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4081                         $expires = '+1d';
4082                 }
4083
4084                 # open patch output
4085                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4086                         '-p', ($format eq 'html' ? "--full-index" : ()),
4087                         $hash_parent_base, $hash_base,
4088                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4089                         or die_error(undef, "Open git-diff-tree failed");
4090         }
4091
4092         # old/legacy style URI
4093         if (!%diffinfo && # if new style URI failed
4094             defined $hash && defined $hash_parent) {
4095                 # fake git-diff-tree raw output
4096                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4097                 $diffinfo{'from_id'} = $hash_parent;
4098                 $diffinfo{'to_id'}   = $hash;
4099                 if (defined $file_name) {
4100                         if (defined $file_parent) {
4101                                 $diffinfo{'status'} = '2';
4102                                 $diffinfo{'from_file'} = $file_parent;
4103                                 $diffinfo{'to_file'}   = $file_name;
4104                         } else { # assume not renamed
4105                                 $diffinfo{'status'} = '1';
4106                                 $diffinfo{'from_file'} = $file_name;
4107                                 $diffinfo{'to_file'}   = $file_name;
4108                         }
4109                 } else { # no filename given
4110                         $diffinfo{'status'} = '2';
4111                         $diffinfo{'from_file'} = $hash_parent;
4112                         $diffinfo{'to_file'}   = $hash;
4113                 }
4114
4115                 # non-textual hash id's can be cached
4116                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4117                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4118                         $expires = '+1d';
4119                 }
4120
4121                 # open patch output
4122                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4123                         '-p', ($format eq 'html' ? "--full-index" : ()),
4124                         $hash_parent, $hash, "--"
4125                         or die_error(undef, "Open git-diff failed");
4126         } else  {
4127                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4128                         unless %diffinfo;
4129         }
4130
4131         # header
4132         if ($format eq 'html') {
4133                 my $formats_nav =
4134                         $cgi->a({-href => href(action=>"blobdiff_plain",
4135                                                hash=>$hash, hash_parent=>$hash_parent,
4136                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4137                                                file_name=>$file_name, file_parent=>$file_parent)},
4138                                 "raw");
4139                 git_header_html(undef, $expires);
4140                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4141                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4142                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4143                 } else {
4144                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4145                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4146                 }
4147                 if (defined $file_name) {
4148                         git_print_page_path($file_name, "blob", $hash_base);
4149                 } else {
4150                         print "<div class=\"page_path\"></div>\n";
4151                 }
4152
4153         } elsif ($format eq 'plain') {
4154                 print $cgi->header(
4155                         -type => 'text/plain',
4156                         -charset => 'utf-8',
4157                         -expires => $expires,
4158                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4159
4160                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4161
4162         } else {
4163                 die_error(undef, "Unknown blobdiff format");
4164         }
4165
4166         # patch
4167         if ($format eq 'html') {
4168                 print "<div class=\"page_body\">\n";
4169
4170                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4171                 close $fd;
4172
4173                 print "</div>\n"; # class="page_body"
4174                 git_footer_html();
4175
4176         } else {
4177                 while (my $line = <$fd>) {
4178                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4179                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4180
4181                         print $line;
4182
4183                         last if $line =~ m!^\+\+\+!;
4184                 }
4185                 local $/ = undef;
4186                 print <$fd>;
4187                 close $fd;
4188         }
4189 }
4190
4191 sub git_blobdiff_plain {
4192         git_blobdiff('plain');
4193 }
4194
4195 sub git_commitdiff {
4196         my $format = shift || 'html';
4197         $hash ||= $hash_base || "HEAD";
4198         my %co = parse_commit($hash);
4199         if (!%co) {
4200                 die_error(undef, "Unknown commit object");
4201         }
4202
4203         # we need to prepare $formats_nav before any parameter munging
4204         my $formats_nav;
4205         if ($format eq 'html') {
4206                 $formats_nav =
4207                         $cgi->a({-href => href(action=>"commitdiff_plain",
4208                                                hash=>$hash, hash_parent=>$hash_parent)},
4209                                 "raw");
4210
4211                 if (defined $hash_parent) {
4212                         # commitdiff with two commits given
4213                         my $hash_parent_short = $hash_parent;
4214                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4215                                 $hash_parent_short = substr($hash_parent, 0, 7);
4216                         }
4217                         $formats_nav .=
4218                                 ' (from: ' .
4219                                 $cgi->a({-href => href(action=>"commitdiff",
4220                                                        hash=>$hash_parent)},
4221                                         esc_html($hash_parent_short)) .
4222                                 ')';
4223                 } elsif (!$co{'parent'}) {
4224                         # --root commitdiff
4225                         $formats_nav .= ' (initial)';
4226                 } elsif (scalar @{$co{'parents'}} == 1) {
4227                         # single parent commit
4228                         $formats_nav .=
4229                                 ' (parent: ' .
4230                                 $cgi->a({-href => href(action=>"commitdiff",
4231                                                        hash=>$co{'parent'})},
4232                                         esc_html(substr($co{'parent'}, 0, 7))) .
4233                                 ')';
4234                 } else {
4235                         # merge commit
4236                         $formats_nav .=
4237                                 ' (merge: ' .
4238                                 join(' ', map {
4239                                         $cgi->a({-href => href(action=>"commitdiff",
4240                                                                hash=>$_)},
4241                                                 esc_html(substr($_, 0, 7)));
4242                                 } @{$co{'parents'}} ) .
4243                                 ')';
4244                 }
4245         }
4246
4247         if (!defined $hash_parent) {
4248                 $hash_parent = $co{'parent'} || '--root';
4249         }
4250
4251         # read commitdiff
4252         my $fd;
4253         my @difftree;
4254         if ($format eq 'html') {
4255                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4256                         "--no-commit-id", "--patch-with-raw", "--full-index",
4257                         $hash_parent, $hash, "--"
4258                         or die_error(undef, "Open git-diff-tree failed");
4259
4260                 while (my $line = <$fd>) {
4261                         chomp $line;
4262                         # empty line ends raw part of diff-tree output
4263                         last unless $line;
4264                         push @difftree, $line;
4265                 }
4266
4267         } elsif ($format eq 'plain') {
4268                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4269                         '-p', $hash_parent, $hash, "--"
4270                         or die_error(undef, "Open git-diff-tree failed");
4271
4272         } else {
4273                 die_error(undef, "Unknown commitdiff format");
4274         }
4275
4276         # non-textual hash id's can be cached
4277         my $expires;
4278         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4279                 $expires = "+1d";
4280         }
4281
4282         # write commit message
4283         if ($format eq 'html') {
4284                 my $refs = git_get_references();
4285                 my $ref = format_ref_marker($refs, $co{'id'});
4286
4287                 git_header_html(undef, $expires);
4288                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4289                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4290                 git_print_authorship(\%co);
4291                 print "<div class=\"page_body\">\n";
4292                 if (@{$co{'comment'}} > 1) {
4293                         print "<div class=\"log\">\n";
4294                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4295                         print "</div>\n"; # class="log"
4296                 }
4297
4298         } elsif ($format eq 'plain') {
4299                 my $refs = git_get_references("tags");
4300                 my $tagname = git_get_rev_name_tags($hash);
4301                 my $filename = basename($project) . "-$hash.patch";
4302
4303                 print $cgi->header(
4304                         -type => 'text/plain',
4305                         -charset => 'utf-8',
4306                         -expires => $expires,
4307                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4308                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4309                 print <<TEXT;
4310 From: $co{'author'}
4311 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4312 Subject: $co{'title'}
4313 TEXT
4314                 print "X-Git-Tag: $tagname\n" if $tagname;
4315                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4316
4317                 foreach my $line (@{$co{'comment'}}) {
4318                         print "$line\n";
4319                 }
4320                 print "---\n\n";
4321         }
4322
4323         # write patch
4324         if ($format eq 'html') {
4325                 git_difftree_body(\@difftree, $hash, $hash_parent);
4326                 print "<br/>\n";
4327
4328                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4329                 close $fd;
4330                 print "</div>\n"; # class="page_body"
4331                 git_footer_html();
4332
4333         } elsif ($format eq 'plain') {
4334                 local $/ = undef;
4335                 print <$fd>;
4336                 close $fd
4337                         or print "Reading git-diff-tree failed\n";
4338         }
4339 }
4340
4341 sub git_commitdiff_plain {
4342         git_commitdiff('plain');
4343 }
4344
4345 sub git_history {
4346         if (!defined $hash_base) {
4347                 $hash_base = git_get_head_hash($project);
4348         }
4349         if (!defined $page) {
4350                 $page = 0;
4351         }
4352         my $ftype;
4353         my %co = parse_commit($hash_base);
4354         if (!%co) {
4355                 die_error(undef, "Unknown commit object");
4356         }
4357
4358         my $refs = git_get_references();
4359         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4360
4361         if (!defined $hash && defined $file_name) {
4362                 $hash = git_get_hash_by_path($hash_base, $file_name);
4363         }
4364         if (defined $hash) {
4365                 $ftype = git_get_type($hash);
4366         }
4367
4368         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4369
4370         my $paging_nav = '';
4371         if ($page > 0) {
4372                 $paging_nav .=
4373                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4374                                                file_name=>$file_name)},
4375                                 "first");
4376                 $paging_nav .= " &sdot; " .
4377                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4378                                                file_name=>$file_name, page=>$page-1),
4379                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4380         } else {
4381                 $paging_nav .= "first";
4382                 $paging_nav .= " &sdot; prev";
4383         }
4384         if ($#commitlist >= 100) {
4385                 $paging_nav .= " &sdot; " .
4386                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4387                                                file_name=>$file_name, page=>$page+1),
4388                                  -accesskey => "n", -title => "Alt-n"}, "next");
4389         } else {
4390                 $paging_nav .= " &sdot; next";
4391         }
4392         my $next_link = '';
4393         if ($#commitlist >= 100) {
4394                 $next_link =
4395                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4396                                                file_name=>$file_name, page=>$page+1),
4397                                  -accesskey => "n", -title => "Alt-n"}, "next");
4398         }
4399
4400         git_header_html();
4401         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4402         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4403         git_print_page_path($file_name, $ftype, $hash_base);
4404
4405         git_history_body(\@commitlist, 0, 99,
4406                          $refs, $hash_base, $ftype, $next_link);
4407
4408         git_footer_html();
4409 }
4410
4411 sub git_search {
4412         my ($have_search) = gitweb_check_feature('search');
4413         if (!$have_search) {
4414                 die_error('403 Permission denied', "Permission denied");
4415         }
4416         if (!defined $searchtext) {
4417                 die_error(undef, "Text field empty");
4418         }
4419         if (!defined $hash) {
4420                 $hash = git_get_head_hash($project);
4421         }
4422         my %co = parse_commit($hash);
4423         if (!%co) {
4424                 die_error(undef, "Unknown commit object");
4425         }
4426         if (!defined $page) {
4427                 $page = 0;
4428         }
4429
4430         $searchtype ||= 'commit';
4431         if ($searchtype eq 'pickaxe') {
4432                 # pickaxe may take all resources of your box and run for several minutes
4433                 # with every query - so decide by yourself how public you make this feature
4434                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4435                 if (!$have_pickaxe) {
4436                         die_error('403 Permission denied', "Permission denied");
4437                 }
4438         }
4439
4440         git_header_html();
4441
4442         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4443                 my $greptype;
4444                 if ($searchtype eq 'commit') {
4445                         $greptype = "--grep=";
4446                 } elsif ($searchtype eq 'author') {
4447                         $greptype = "--author=";
4448                 } elsif ($searchtype eq 'committer') {
4449                         $greptype = "--committer=";
4450                 }
4451                 $greptype .= $searchtext;
4452                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4453
4454                 my $paging_nav = '';
4455                 if ($page > 0) {
4456                         $paging_nav .=
4457                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4458                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4459                                         "first");
4460                         $paging_nav .= " &sdot; " .
4461                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4462                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4463                                                        page=>$page-1),
4464                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4465                 } else {
4466                         $paging_nav .= "first";
4467                         $paging_nav .= " &sdot; prev";
4468                 }
4469                 if ($#commitlist >= 100) {
4470                         $paging_nav .= " &sdot; " .
4471                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4472                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4473                                                        page=>$page+1),
4474                                          -accesskey => "n", -title => "Alt-n"}, "next");
4475                 } else {
4476                         $paging_nav .= " &sdot; next";
4477                 }
4478                 my $next_link = '';
4479                 if ($#commitlist >= 100) {
4480                         $next_link =
4481                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4482                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4483                                                        page=>$page+1),
4484                                          -accesskey => "n", -title => "Alt-n"}, "next");
4485                 }
4486
4487                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4488                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4489                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4490         }
4491
4492         if ($searchtype eq 'pickaxe') {
4493                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4494                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4495
4496                 print "<table cellspacing=\"0\">\n";
4497                 my $alternate = 1;
4498                 $/ = "\n";
4499                 my $git_command = git_cmd_str();
4500                 open my $fd, "-|", "$git_command rev-list $hash | " .
4501                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4502                 undef %co;
4503                 my @files;
4504                 while (my $line = <$fd>) {
4505                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4506                                 my %set;
4507                                 $set{'file'} = $6;
4508                                 $set{'from_id'} = $3;
4509                                 $set{'to_id'} = $4;
4510                                 $set{'id'} = $set{'to_id'};
4511                                 if ($set{'id'} =~ m/0{40}/) {
4512                                         $set{'id'} = $set{'from_id'};
4513                                 }
4514                                 if ($set{'id'} =~ m/0{40}/) {
4515                                         next;
4516                                 }
4517                                 push @files, \%set;
4518                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4519                                 if (%co) {
4520                                         if ($alternate) {
4521                                                 print "<tr class=\"dark\">\n";
4522                                         } else {
4523                                                 print "<tr class=\"light\">\n";
4524                                         }
4525                                         $alternate ^= 1;
4526                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4527                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4528                                               "<td>" .
4529                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4530                                                       -class => "list subject"},
4531                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4532                                         while (my $setref = shift @files) {
4533                                                 my %set = %$setref;
4534                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4535                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4536                                                               -class => "list"},
4537                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4538                                                       "<br/>\n";
4539                                         }
4540                                         print "</td>\n" .
4541                                               "<td class=\"link\">" .
4542                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4543                                               " | " .
4544                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4545                                         print "</td>\n" .
4546                                               "</tr>\n";
4547                                 }
4548                                 %co = parse_commit($1);
4549                         }
4550                 }
4551                 close $fd;
4552
4553                 print "</table>\n";
4554         }
4555         git_footer_html();
4556 }
4557
4558 sub git_search_help {
4559         git_header_html();
4560         git_print_page_nav('','', $hash,$hash,$hash);
4561         print <<EOT;
4562 <dl>
4563 <dt><b>commit</b></dt>
4564 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4565 <dt><b>author</b></dt>
4566 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4567 <dt><b>committer</b></dt>
4568 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4569 EOT
4570         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4571         if ($have_pickaxe) {
4572                 print <<EOT;
4573 <dt><b>pickaxe</b></dt>
4574 <dd>All commits that caused the string to appear or disappear from any file (changes that
4575 added, removed or "modified" the string) will be listed. This search can take a while and
4576 takes a lot of strain on the server, so please use it wisely.</dd>
4577 EOT
4578         }
4579         print "</dl>\n";
4580         git_footer_html();
4581 }
4582
4583 sub git_shortlog {
4584         my $head = git_get_head_hash($project);
4585         if (!defined $hash) {
4586                 $hash = $head;
4587         }
4588         if (!defined $page) {
4589                 $page = 0;
4590         }
4591         my $refs = git_get_references();
4592
4593         my @commitlist = parse_commits($hash, 101, (100 * $page));
4594
4595         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4596         my $next_link = '';
4597         if ($#commitlist >= 100) {
4598                 $next_link =
4599                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4600                                  -accesskey => "n", -title => "Alt-n"}, "next");
4601         }
4602
4603         git_header_html();
4604         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4605         git_print_header_div('summary', $project);
4606
4607         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4608
4609         git_footer_html();
4610 }
4611
4612 ## ......................................................................
4613 ## feeds (RSS, Atom; OPML)
4614
4615 sub git_feed {
4616         my $format = shift || 'atom';
4617         my ($have_blame) = gitweb_check_feature('blame');
4618
4619         # Atom: http://www.atomenabled.org/developers/syndication/
4620         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4621         if ($format ne 'rss' && $format ne 'atom') {
4622                 die_error(undef, "Unknown web feed format");
4623         }
4624
4625         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4626         my $head = $hash || 'HEAD';
4627         my @commitlist = parse_commits($head, 150);
4628
4629         my %latest_commit;
4630         my %latest_date;
4631         my $content_type = "application/$format+xml";
4632         if (defined $cgi->http('HTTP_ACCEPT') &&
4633                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4634                 # browser (feed reader) prefers text/xml
4635                 $content_type = 'text/xml';
4636         }
4637         if (defined($commitlist[0])) {
4638                 %latest_commit = %{$commitlist[0]};
4639                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4640                 print $cgi->header(
4641                         -type => $content_type,
4642                         -charset => 'utf-8',
4643                         -last_modified => $latest_date{'rfc2822'});
4644         } else {
4645                 print $cgi->header(
4646                         -type => $content_type,
4647                         -charset => 'utf-8');
4648         }
4649
4650         # Optimization: skip generating the body if client asks only
4651         # for Last-Modified date.
4652         return if ($cgi->request_method() eq 'HEAD');
4653
4654         # header variables
4655         my $title = "$site_name - $project/$action";
4656         my $feed_type = 'log';
4657         if (defined $hash) {
4658                 $title .= " - '$hash'";
4659                 $feed_type = 'branch log';
4660                 if (defined $file_name) {
4661                         $title .= " :: $file_name";
4662                         $feed_type = 'history';
4663                 }
4664         } elsif (defined $file_name) {
4665                 $title .= " - $file_name";
4666                 $feed_type = 'history';
4667         }
4668         $title .= " $feed_type";
4669         my $descr = git_get_project_description($project);
4670         if (defined $descr) {
4671                 $descr = esc_html($descr);
4672         } else {
4673                 $descr = "$project " .
4674                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4675                          " feed";
4676         }
4677         my $owner = git_get_project_owner($project);
4678         $owner = esc_html($owner);
4679
4680         #header
4681         my $alt_url;
4682         if (defined $file_name) {
4683                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4684         } elsif (defined $hash) {
4685                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4686         } else {
4687                 $alt_url = href(-full=>1, action=>"summary");
4688         }
4689         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4690         if ($format eq 'rss') {
4691                 print <<XML;
4692 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4693 <channel>
4694 XML
4695                 print "<title>$title</title>\n" .
4696                       "<link>$alt_url</link>\n" .
4697                       "<description>$descr</description>\n" .
4698                       "<language>en</language>\n";
4699         } elsif ($format eq 'atom') {
4700                 print <<XML;
4701 <feed xmlns="http://www.w3.org/2005/Atom">
4702 XML
4703                 print "<title>$title</title>\n" .
4704                       "<subtitle>$descr</subtitle>\n" .
4705                       '<link rel="alternate" type="text/html" href="' .
4706                       $alt_url . '" />' . "\n" .
4707                       '<link rel="self" type="' . $content_type . '" href="' .
4708                       $cgi->self_url() . '" />' . "\n" .
4709                       "<id>" . href(-full=>1) . "</id>\n" .
4710                       # use project owner for feed author
4711                       "<author><name>$owner</name></author>\n";
4712                 if (defined $favicon) {
4713                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4714                 }
4715                 if (defined $logo_url) {
4716                         # not twice as wide as tall: 72 x 27 pixels
4717                         print "<logo>" . esc_url($logo) . "</logo>\n";
4718                 }
4719                 if (! %latest_date) {
4720                         # dummy date to keep the feed valid until commits trickle in:
4721                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4722                 } else {
4723                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4724                 }
4725         }
4726
4727         # contents
4728         for (my $i = 0; $i <= $#commitlist; $i++) {
4729                 my %co = %{$commitlist[$i]};
4730                 my $commit = $co{'id'};
4731                 # we read 150, we always show 30 and the ones more recent than 48 hours
4732                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4733                         last;
4734                 }
4735                 my %cd = parse_date($co{'author_epoch'});
4736
4737                 # get list of changed files
4738                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4739                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4740                         or next;
4741                 my @difftree = map { chomp; $_ } <$fd>;
4742                 close $fd
4743                         or next;
4744
4745                 # print element (entry, item)
4746                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4747                 if ($format eq 'rss') {
4748                         print "<item>\n" .
4749                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4750                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4751                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4752                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4753                               "<link>$co_url</link>\n" .
4754                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4755                               "<content:encoded>" .
4756                               "<![CDATA[\n";
4757                 } elsif ($format eq 'atom') {
4758                         print "<entry>\n" .
4759                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4760                               "<updated>$cd{'iso-8601'}</updated>\n" .
4761                               "<author>\n" .
4762                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4763                         if ($co{'author_email'}) {
4764                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4765                         }
4766                         print "</author>\n" .
4767                               # use committer for contributor
4768                               "<contributor>\n" .
4769                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4770                         if ($co{'committer_email'}) {
4771                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4772                         }
4773                         print "</contributor>\n" .
4774                               "<published>$cd{'iso-8601'}</published>\n" .
4775                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4776                               "<id>$co_url</id>\n" .
4777                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4778                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4779                 }
4780                 my $comment = $co{'comment'};
4781                 print "<pre>\n";
4782                 foreach my $line (@$comment) {
4783                         $line = esc_html($line);
4784                         print "$line\n";
4785                 }
4786                 print "</pre><ul>\n";
4787                 foreach my $difftree_line (@difftree) {
4788                         my %difftree = parse_difftree_raw_line($difftree_line);
4789                         next if !$difftree{'from_id'};
4790
4791                         my $file = $difftree{'file'} || $difftree{'to_file'};
4792
4793                         print "<li>" .
4794                               "[" .
4795                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4796                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4797                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4798                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4799                                       -title => "diff"}, 'D');
4800                         if ($have_blame) {
4801                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4802                                                              file_name=>$file, hash_base=>$commit),
4803                                               -title => "blame"}, 'B');
4804                         }
4805                         # if this is not a feed of a file history
4806                         if (!defined $file_name || $file_name ne $file) {
4807                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4808                                                              file_name=>$file, hash=>$commit),
4809                                               -title => "history"}, 'H');
4810                         }
4811                         $file = esc_path($file);
4812                         print "] ".
4813                               "$file</li>\n";
4814                 }
4815                 if ($format eq 'rss') {
4816                         print "</ul>]]>\n" .
4817                               "</content:encoded>\n" .
4818                               "</item>\n";
4819                 } elsif ($format eq 'atom') {
4820                         print "</ul>\n</div>\n" .
4821                               "</content>\n" .
4822                               "</entry>\n";
4823                 }
4824         }
4825
4826         # end of feed
4827         if ($format eq 'rss') {
4828                 print "</channel>\n</rss>\n";
4829         }       elsif ($format eq 'atom') {
4830                 print "</feed>\n";
4831         }
4832 }
4833
4834 sub git_rss {
4835         git_feed('rss');
4836 }
4837
4838 sub git_atom {
4839         git_feed('atom');
4840 }
4841
4842 sub git_opml {
4843         my @list = git_get_projects_list();
4844
4845         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4846         print <<XML;
4847 <?xml version="1.0" encoding="utf-8"?>
4848 <opml version="1.0">
4849 <head>
4850   <title>$site_name OPML Export</title>
4851 </head>
4852 <body>
4853 <outline text="git RSS feeds">
4854 XML
4855
4856         foreach my $pr (@list) {
4857                 my %proj = %$pr;
4858                 my $head = git_get_head_hash($proj{'path'});
4859                 if (!defined $head) {
4860                         next;
4861                 }
4862                 $git_dir = "$projectroot/$proj{'path'}";
4863                 my %co = parse_commit($head);
4864                 if (!%co) {
4865                         next;
4866                 }
4867
4868                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4869                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4870                 my $html = "$my_url?p=$proj{'path'};a=summary";
4871                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4872         }
4873         print <<XML;
4874 </outline>
4875 </body>
4876 </opml>
4877 XML
4878 }