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 $diff_class = "";
 902
 903         chomp $line;
 904
 905         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 906                 # combined diff
 907                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 908                 if ($line =~ m/^\@{3}/) {
 909                         $diff_class = " chunk_header";
 910                 } elsif ($line =~ m/^\\/) {
 911                         $diff_class = " incomplete";
 912                 } elsif ($prefix =~ tr/+/+/) {
 913                         $diff_class = " add";
 914                 } elsif ($prefix =~ tr/-/-/) {
 915                         $diff_class = " rem";
 916                 }
 917         } else {
 918                 # assume ordinary diff
 919                 my $char = substr($line, 0, 1);
 920                 if ($char eq '+') {
 921                         $diff_class = " add";
 922                 } elsif ($char eq '-') {
 923                         $diff_class = " rem";
 924                 } elsif ($char eq '@') {
 925                         $diff_class = " chunk_header";
 926                 } elsif ($char eq "\\") {
 927                         $diff_class = " incomplete";
 928                 }
 929         }
 930         $line = untabify($line);
 931         if ($from && $to && $line =~ m/^\@{2} /) {
 932                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 933                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 934
 935                 $from_lines = 0 unless defined $from_lines;
 936                 $to_lines   = 0 unless defined $to_lines;
 937
 938                 if ($from->{'href'}) {
 939                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 940                                              -class=>"list"}, $from_text);
 941                 }
 942                 if ($to->{'href'}) {
 943                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 944                                              -class=>"list"}, $to_text);
 945                 }
 946                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 947                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 948                 return "<div class=\"diff$diff_class\">$line</div>\n";
 949         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 950                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 951                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 952
 953                 @from_text = split(' ', $ranges);
 954                 for (my $i = 0; $i < @from_text; ++$i) {
 955                         ($from_start[$i], $from_nlines[$i]) =
 956                                 (split(',', substr($from_text[$i], 1)), 0);
 957                 }
 958
 959                 $to_text   = pop @from_text;
 960                 $to_start  = pop @from_start;
 961                 $to_nlines = pop @from_nlines;
 962
 963                 $line = "<span class=\"chunk_info\">$prefix ";
 964                 for (my $i = 0; $i < @from_text; ++$i) {
 965                         if ($from->{'href'}[$i]) {
 966                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 967                                                   -class=>"list"}, $from_text[$i]);
 968                         } else {
 969                                 $line .= $from_text[$i];
 970                         }
 971                         $line .= " ";
 972                 }
 973                 if ($to->{'href'}) {
 974                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 975                                           -class=>"list"}, $to_text);
 976                 } else {
 977                         $line .= $to_text;
 978                 }
 979                 $line .= " $prefix</span>" .
 980                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 981                 return "<div class=\"diff$diff_class\">$line</div>\n";
 982         }
 983         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 984 }
 985
 986 ## ----------------------------------------------------------------------
 987 ## git utility subroutines, invoking git commands
 988
 989 # returns path to the core git executable and the --git-dir parameter as list
 990 sub git_cmd {
 991         return $GIT, '--git-dir='.$git_dir;
 992 }
 993
 994 # returns path to the core git executable and the --git-dir parameter as string
 995 sub git_cmd_str {
 996         return join(' ', git_cmd());
 997 }
 998
 999 # get HEAD ref of given project as hash
1000 sub git_get_head_hash {
1001         my $project = shift;
1002         my $o_git_dir = $git_dir;
1003         my $retval = undef;
1004         $git_dir = "$projectroot/$project";
1005         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1006                 my $head = <$fd>;
1007                 close $fd;
1008                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1009                         $retval = $1;
1010                 }
1011         }
1012         if (defined $o_git_dir) {
1013                 $git_dir = $o_git_dir;
1014         }
1015         return $retval;
1016 }
1017
1018 # get type of given object
1019 sub git_get_type {
1020         my $hash = shift;
1021
1022         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1023         my $type = <$fd>;
1024         close $fd or return;
1025         chomp $type;
1026         return $type;
1027 }
1028
1029 sub git_get_project_config {
1030         my ($key, $type) = @_;
1031
1032         return unless ($key);
1033         $key =~ s/^gitweb\.//;
1034         return if ($key =~ m/\W/);
1035
1036         my @x = (git_cmd(), 'config');
1037         if (defined $type) { push @x, $type; }
1038         push @x, "--get";
1039         push @x, "gitweb.$key";
1040         my $val = qx(@x);
1041         chomp $val;
1042         return ($val);
1043 }
1044
1045 # get hash of given path at given ref
1046 sub git_get_hash_by_path {
1047         my $base = shift;
1048         my $path = shift || return undef;
1049         my $type = shift;
1050
1051         $path =~ s,/+$,,;
1052
1053         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1054                 or die_error(undef, "Open git-ls-tree failed");
1055         my $line = <$fd>;
1056         close $fd or return undef;
1057
1058         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1059         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1060         if (defined $type && $type ne $2) {
1061                 # type doesn't match
1062                 return undef;
1063         }
1064         return $3;
1065 }
1066
1067 # get path of entry with given hash at given tree-ish (ref)
1068 # used to get 'from' filename for combined diff (merge commit) for renames
1069 sub git_get_path_by_hash {
1070         my $base = shift || return;
1071         my $hash = shift || return;
1072
1073         local $/ = "\0";
1074
1075         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1076                 or return undef;
1077         while (my $line = <$fd>) {
1078                 chomp $line;
1079
1080                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1081                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1082                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1083                         close $fd;
1084                         return $1;
1085                 }
1086         }
1087         close $fd;
1088         return undef;
1089 }
1090
1091 ## ......................................................................
1092 ## git utility functions, directly accessing git repository
1093
1094 sub git_get_project_description {
1095         my $path = shift;
1096
1097         open my $fd, "$projectroot/$path/description" or return undef;
1098         my $descr = <$fd>;
1099         close $fd;
1100         chomp $descr;
1101         return $descr;
1102 }
1103
1104 sub git_get_project_url_list {
1105         my $path = shift;
1106
1107         open my $fd, "$projectroot/$path/cloneurl" or return;
1108         my @git_project_url_list = map { chomp; $_ } <$fd>;
1109         close $fd;
1110
1111         return wantarray ? @git_project_url_list : \@git_project_url_list;
1112 }
1113
1114 sub git_get_projects_list {
1115         my ($filter) = @_;
1116         my @list;
1117
1118         $filter ||= '';
1119         $filter =~ s/\.git$//;
1120
1121         my ($check_forks) = gitweb_check_feature('forks');
1122
1123         if (-d $projects_list) {
1124                 # search in directory
1125                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1126                 # remove the trailing "/"
1127                 $dir =~ s!/+$!!;
1128                 my $pfxlen = length("$dir");
1129
1130                 File::Find::find({
1131                         follow_fast => 1, # follow symbolic links
1132                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1133                         wanted => sub {
1134                                 # skip project-list toplevel, if we get it.
1135                                 return if (m!^[/.]$!);
1136                                 # only directories can be git repositories
1137                                 return unless (-d $_);
1138
1139                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1140                                 # we check related file in $projectroot
1141                                 if ($check_forks and $subdir =~ m#/.#) {
1142                                         $File::Find::prune = 1;
1143                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1144                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1145                                         $File::Find::prune = 1;
1146                                 }
1147                         },
1148                 }, "$dir");
1149
1150         } elsif (-f $projects_list) {
1151                 # read from file(url-encoded):
1152                 # 'git%2Fgit.git Linus+Torvalds'
1153                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1154                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1155                 my %paths;
1156                 open my ($fd), $projects_list or return;
1157         PROJECT:
1158                 while (my $line = <$fd>) {
1159                         chomp $line;
1160                         my ($path, $owner) = split ' ', $line;
1161                         $path = unescape($path);
1162                         $owner = unescape($owner);
1163                         if (!defined $path) {
1164                                 next;
1165                         }
1166                         if ($filter ne '') {
1167                                 # looking for forks;
1168                                 my $pfx = substr($path, 0, length($filter));
1169                                 if ($pfx ne $filter) {
1170                                         next PROJECT;
1171                                 }
1172                                 my $sfx = substr($path, length($filter));
1173                                 if ($sfx !~ /^\/.*\.git$/) {
1174                                         next PROJECT;
1175                                 }
1176                         } elsif ($check_forks) {
1177                         PATH:
1178                                 foreach my $filter (keys %paths) {
1179                                         # looking for forks;
1180                                         my $pfx = substr($path, 0, length($filter));
1181                                         if ($pfx ne $filter) {
1182                                                 next PATH;
1183                                         }
1184                                         my $sfx = substr($path, length($filter));
1185                                         if ($sfx !~ /^\/.*\.git$/) {
1186                                                 next PATH;
1187                                         }
1188                                         # is a fork, don't include it in
1189                                         # the list
1190                                         next PROJECT;
1191                                 }
1192                         }
1193                         if (check_export_ok("$projectroot/$path")) {
1194                                 my $pr = {
1195                                         path => $path,
1196                                         owner => decode_utf8($owner),
1197                                 };
1198                                 push @list, $pr;
1199                                 (my $forks_path = $path) =~ s/\.git$//;
1200                                 $paths{$forks_path}++;
1201                         }
1202                 }
1203                 close $fd;
1204         }
1205         return @list;
1206 }
1207
1208 sub git_get_project_owner {
1209         my $project = shift;
1210         my $owner;
1211
1212         return undef unless $project;
1213
1214         # read from file (url-encoded):
1215         # 'git%2Fgit.git Linus+Torvalds'
1216         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1217         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1218         if (-f $projects_list) {
1219                 open (my $fd , $projects_list);
1220                 while (my $line = <$fd>) {
1221                         chomp $line;
1222                         my ($pr, $ow) = split ' ', $line;
1223                         $pr = unescape($pr);
1224                         $ow = unescape($ow);
1225                         if ($pr eq $project) {
1226                                 $owner = decode_utf8($ow);
1227                                 last;
1228                         }
1229                 }
1230                 close $fd;
1231         }
1232         if (!defined $owner) {
1233                 $owner = get_file_owner("$projectroot/$project");
1234         }
1235
1236         return $owner;
1237 }
1238
1239 sub git_get_last_activity {
1240         my ($path) = @_;
1241         my $fd;
1242
1243         $git_dir = "$projectroot/$path";
1244         open($fd, "-|", git_cmd(), 'for-each-ref',
1245              '--format=%(committer)',
1246              '--sort=-committerdate',
1247              '--count=1',
1248              'refs/heads') or return;
1249         my $most_recent = <$fd>;
1250         close $fd or return;
1251         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1252                 my $timestamp = $1;
1253                 my $age = time - $timestamp;
1254                 return ($age, age_string($age));
1255         }
1256 }
1257
1258 sub git_get_references {
1259         my $type = shift || "";
1260         my %refs;
1261         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1262         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1263         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1264                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1265                 or return;
1266
1267         while (my $line = <$fd>) {
1268                 chomp $line;
1269                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1270                         if (defined $refs{$1}) {
1271                                 push @{$refs{$1}}, $2;
1272                         } else {
1273                                 $refs{$1} = [ $2 ];
1274                         }
1275                 }
1276         }
1277         close $fd or return;
1278         return \%refs;
1279 }
1280
1281 sub git_get_rev_name_tags {
1282         my $hash = shift || return undef;
1283
1284         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1285                 or return;
1286         my $name_rev = <$fd>;
1287         close $fd;
1288
1289         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1290                 return $1;
1291         } else {
1292                 # catches also '$hash undefined' output
1293                 return undef;
1294         }
1295 }
1296
1297 ## ----------------------------------------------------------------------
1298 ## parse to hash functions
1299
1300 sub parse_date {
1301         my $epoch = shift;
1302         my $tz = shift || "-0000";
1303
1304         my %date;
1305         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1306         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1307         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1308         $date{'hour'} = $hour;
1309         $date{'minute'} = $min;
1310         $date{'mday'} = $mday;
1311         $date{'day'} = $days[$wday];
1312         $date{'month'} = $months[$mon];
1313         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1314                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1315         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1316                              $mday, $months[$mon], $hour ,$min;
1317         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1318                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1319
1320         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1321         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1322         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1323         $date{'hour_local'} = $hour;
1324         $date{'minute_local'} = $min;
1325         $date{'tz_local'} = $tz;
1326         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1327                                   1900+$year, $mon+1, $mday,
1328                                   $hour, $min, $sec, $tz);
1329         return %date;
1330 }
1331
1332 sub parse_tag {
1333         my $tag_id = shift;
1334         my %tag;
1335         my @comment;
1336
1337         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1338         $tag{'id'} = $tag_id;
1339         while (my $line = <$fd>) {
1340                 chomp $line;
1341                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1342                         $tag{'object'} = $1;
1343                 } elsif ($line =~ m/^type (.+)$/) {
1344                         $tag{'type'} = $1;
1345                 } elsif ($line =~ m/^tag (.+)$/) {
1346                         $tag{'name'} = $1;
1347                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1348                         $tag{'author'} = $1;
1349                         $tag{'epoch'} = $2;
1350                         $tag{'tz'} = $3;
1351                 } elsif ($line =~ m/--BEGIN/) {
1352                         push @comment, $line;
1353                         last;
1354                 } elsif ($line eq "") {
1355                         last;
1356                 }
1357         }
1358         push @comment, <$fd>;
1359         $tag{'comment'} = \@comment;
1360         close $fd or return;
1361         if (!defined $tag{'name'}) {
1362                 return
1363         };
1364         return %tag
1365 }
1366
1367 sub parse_commit_text {
1368         my ($commit_text, $withparents) = @_;
1369         my @commit_lines = split '\n', $commit_text;
1370         my %co;
1371
1372         pop @commit_lines; # Remove '\0'
1373
1374         my $header = shift @commit_lines;
1375         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1376                 return;
1377         }
1378         ($co{'id'}, my @parents) = split ' ', $header;
1379         while (my $line = shift @commit_lines) {
1380                 last if $line eq "\n";
1381                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1382                         $co{'tree'} = $1;
1383                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1384                         push @parents, $1;
1385                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1386                         $co{'author'} = $1;
1387                         $co{'author_epoch'} = $2;
1388                         $co{'author_tz'} = $3;
1389                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1390                                 $co{'author_name'}  = $1;
1391                                 $co{'author_email'} = $2;
1392                         } else {
1393                                 $co{'author_name'} = $co{'author'};
1394                         }
1395                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1396                         $co{'committer'} = $1;
1397                         $co{'committer_epoch'} = $2;
1398                         $co{'committer_tz'} = $3;
1399                         $co{'committer_name'} = $co{'committer'};
1400                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1401                                 $co{'committer_name'}  = $1;
1402                                 $co{'committer_email'} = $2;
1403                         } else {
1404                                 $co{'committer_name'} = $co{'committer'};
1405                         }
1406                 }
1407         }
1408         if (!defined $co{'tree'}) {
1409                 return;
1410         };
1411         $co{'parents'} = \@parents;
1412         $co{'parent'} = $parents[0];
1413
1414         foreach my $title (@commit_lines) {
1415                 $title =~ s/^    //;
1416                 if ($title ne "") {
1417                         $co{'title'} = chop_str($title, 80, 5);
1418                         # remove leading stuff of merges to make the interesting part visible
1419                         if (length($title) > 50) {
1420                                 $title =~ s/^Automatic //;
1421                                 $title =~ s/^merge (of|with) /Merge ... /i;
1422                                 if (length($title) > 50) {
1423                                         $title =~ s/(http|rsync):\/\///;
1424                                 }
1425                                 if (length($title) > 50) {
1426                                         $title =~ s/(master|www|rsync)\.//;
1427                                 }
1428                                 if (length($title) > 50) {
1429                                         $title =~ s/kernel.org:?//;
1430                                 }
1431                                 if (length($title) > 50) {
1432                                         $title =~ s/\/pub\/scm//;
1433                                 }
1434                         }
1435                         $co{'title_short'} = chop_str($title, 50, 5);
1436                         last;
1437                 }
1438         }
1439         if ($co{'title'} eq "") {
1440                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1441         }
1442         # remove added spaces
1443         foreach my $line (@commit_lines) {
1444                 $line =~ s/^    //;
1445         }
1446         $co{'comment'} = \@commit_lines;
1447
1448         my $age = time - $co{'committer_epoch'};
1449         $co{'age'} = $age;
1450         $co{'age_string'} = age_string($age);
1451         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1452         if ($age > 60*60*24*7*2) {
1453                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1454                 $co{'age_string_age'} = $co{'age_string'};
1455         } else {
1456                 $co{'age_string_date'} = $co{'age_string'};
1457                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1458         }
1459         return %co;
1460 }
1461
1462 sub parse_commit {
1463         my ($commit_id) = @_;
1464         my %co;
1465
1466         local $/ = "\0";
1467
1468         open my $fd, "-|", git_cmd(), "rev-list",
1469                 "--parents",
1470                 "--header",
1471                 "--max-count=1",
1472                 $commit_id,
1473                 "--",
1474                 or die_error(undef, "Open git-rev-list failed");
1475         %co = parse_commit_text(<$fd>, 1);
1476         close $fd;
1477
1478         return %co;
1479 }
1480
1481 sub parse_commits {
1482         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1483         my @cos;
1484
1485         $maxcount ||= 1;
1486         $skip ||= 0;
1487
1488         local $/ = "\0";
1489
1490         open my $fd, "-|", git_cmd(), "rev-list",
1491                 "--header",
1492                 ($arg ? ($arg) : ()),
1493                 ("--max-count=" . $maxcount),
1494                 ("--skip=" . $skip),
1495                 $commit_id,
1496                 "--",
1497                 ($filename ? ($filename) : ())
1498                 or die_error(undef, "Open git-rev-list failed");
1499         while (my $line = <$fd>) {
1500                 my %co = parse_commit_text($line);
1501                 push @cos, \%co;
1502         }
1503         close $fd;
1504
1505         return wantarray ? @cos : \@cos;
1506 }
1507
1508 # parse ref from ref_file, given by ref_id, with given type
1509 sub parse_ref {
1510         my $ref_file = shift;
1511         my $ref_id = shift;
1512         my $type = shift || git_get_type($ref_id);
1513         my %ref_item;
1514
1515         $ref_item{'type'} = $type;
1516         $ref_item{'id'} = $ref_id;
1517         $ref_item{'epoch'} = 0;
1518         $ref_item{'age'} = "unknown";
1519         if ($type eq "tag") {
1520                 my %tag = parse_tag($ref_id);
1521                 $ref_item{'comment'} = $tag{'comment'};
1522                 if ($tag{'type'} eq "commit") {
1523                         my %co = parse_commit($tag{'object'});
1524                         $ref_item{'epoch'} = $co{'committer_epoch'};
1525                         $ref_item{'age'} = $co{'age_string'};
1526                 } elsif (defined($tag{'epoch'})) {
1527                         my $age = time - $tag{'epoch'};
1528                         $ref_item{'epoch'} = $tag{'epoch'};
1529                         $ref_item{'age'} = age_string($age);
1530                 }
1531                 $ref_item{'reftype'} = $tag{'type'};
1532                 $ref_item{'name'} = $tag{'name'};
1533                 $ref_item{'refid'} = $tag{'object'};
1534         } elsif ($type eq "commit"){
1535                 my %co = parse_commit($ref_id);
1536                 $ref_item{'reftype'} = "commit";
1537                 $ref_item{'name'} = $ref_file;
1538                 $ref_item{'title'} = $co{'title'};
1539                 $ref_item{'refid'} = $ref_id;
1540                 $ref_item{'epoch'} = $co{'committer_epoch'};
1541                 $ref_item{'age'} = $co{'age_string'};
1542         } else {
1543                 $ref_item{'reftype'} = $type;
1544                 $ref_item{'name'} = $ref_file;
1545                 $ref_item{'refid'} = $ref_id;
1546         }
1547
1548         return %ref_item;
1549 }
1550
1551 # parse line of git-diff-tree "raw" output
1552 sub parse_difftree_raw_line {
1553         my $line = shift;
1554         my %res;
1555
1556         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1557         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1558         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1559                 $res{'from_mode'} = $1;
1560                 $res{'to_mode'} = $2;
1561                 $res{'from_id'} = $3;
1562                 $res{'to_id'} = $4;
1563                 $res{'status'} = $5;
1564                 $res{'similarity'} = $6;
1565                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1566                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1567                 } else {
1568                         $res{'file'} = unquote($7);
1569                 }
1570         }
1571         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1572         # combined diff (for merge commit)
1573         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1574                 $res{'nparents'}  = length($1);
1575                 $res{'from_mode'} = [ split(' ', $2) ];
1576                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1577                 $res{'from_id'} = [ split(' ', $3) ];
1578                 $res{'to_id'} = pop @{$res{'from_id'}};
1579                 $res{'status'} = [ split('', $4) ];
1580                 $res{'to_file'} = unquote($5);
1581         }
1582         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1583         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1584                 $res{'commit'} = $1;
1585         }
1586
1587         return wantarray ? %res : \%res;
1588 }
1589
1590 # parse line of git-ls-tree output
1591 sub parse_ls_tree_line ($;%) {
1592         my $line = shift;
1593         my %opts = @_;
1594         my %res;
1595
1596         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1597         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1598
1599         $res{'mode'} = $1;
1600         $res{'type'} = $2;
1601         $res{'hash'} = $3;
1602         if ($opts{'-z'}) {
1603                 $res{'name'} = $4;
1604         } else {
1605                 $res{'name'} = unquote($4);
1606         }
1607
1608         return wantarray ? %res : \%res;
1609 }
1610
1611 ## ......................................................................
1612 ## parse to array of hashes functions
1613
1614 sub git_get_heads_list {
1615         my $limit = shift;
1616         my @headslist;
1617
1618         open my $fd, '-|', git_cmd(), 'for-each-ref',
1619                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1620                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1621                 'refs/heads'
1622                 or return;
1623         while (my $line = <$fd>) {
1624                 my %ref_item;
1625
1626                 chomp $line;
1627                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1628                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1629                 my ($committer, $epoch, $tz) =
1630                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1631                 $name =~ s!^refs/heads/!!;
1632
1633                 $ref_item{'name'}  = $name;
1634                 $ref_item{'id'}    = $hash;
1635                 $ref_item{'title'} = $title || '(no commit message)';
1636                 $ref_item{'epoch'} = $epoch;
1637                 if ($epoch) {
1638                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1639                 } else {
1640                         $ref_item{'age'} = "unknown";
1641                 }
1642
1643                 push @headslist, \%ref_item;
1644         }
1645         close $fd;
1646
1647         return wantarray ? @headslist : \@headslist;
1648 }
1649
1650 sub git_get_tags_list {
1651         my $limit = shift;
1652         my @tagslist;
1653
1654         open my $fd, '-|', git_cmd(), 'for-each-ref',
1655                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1656                 '--format=%(objectname) %(objecttype) %(refname) '.
1657                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1658                 'refs/tags'
1659                 or return;
1660         while (my $line = <$fd>) {
1661                 my %ref_item;
1662
1663                 chomp $line;
1664                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1665                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1666                 my ($creator, $epoch, $tz) =
1667                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1668                 $name =~ s!^refs/tags/!!;
1669
1670                 $ref_item{'type'} = $type;
1671                 $ref_item{'id'} = $id;
1672                 $ref_item{'name'} = $name;
1673                 if ($type eq "tag") {
1674                         $ref_item{'subject'} = $title;
1675                         $ref_item{'reftype'} = $reftype;
1676                         $ref_item{'refid'}   = $refid;
1677                 } else {
1678                         $ref_item{'reftype'} = $type;
1679                         $ref_item{'refid'}   = $id;
1680                 }
1681
1682                 if ($type eq "tag" || $type eq "commit") {
1683                         $ref_item{'epoch'} = $epoch;
1684                         if ($epoch) {
1685                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1686                         } else {
1687                                 $ref_item{'age'} = "unknown";
1688                         }
1689                 }
1690
1691                 push @tagslist, \%ref_item;
1692         }
1693         close $fd;
1694
1695         return wantarray ? @tagslist : \@tagslist;
1696 }
1697
1698 ## ----------------------------------------------------------------------
1699 ## filesystem-related functions
1700
1701 sub get_file_owner {
1702         my $path = shift;
1703
1704         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1705         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1706         if (!defined $gcos) {
1707                 return undef;
1708         }
1709         my $owner = $gcos;
1710         $owner =~ s/[,;].*$//;
1711         return decode_utf8($owner);
1712 }
1713
1714 ## ......................................................................
1715 ## mimetype related functions
1716
1717 sub mimetype_guess_file {
1718         my $filename = shift;
1719         my $mimemap = shift;
1720         -r $mimemap or return undef;
1721
1722         my %mimemap;
1723         open(MIME, $mimemap) or return undef;
1724         while (<MIME>) {
1725                 next if m/^#/; # skip comments
1726                 my ($mime, $exts) = split(/\t+/);
1727                 if (defined $exts) {
1728                         my @exts = split(/\s+/, $exts);
1729                         foreach my $ext (@exts) {
1730                                 $mimemap{$ext} = $mime;
1731                         }
1732                 }
1733         }
1734         close(MIME);
1735
1736         $filename =~ /\.([^.]*)$/;
1737         return $mimemap{$1};
1738 }
1739
1740 sub mimetype_guess {
1741         my $filename = shift;
1742         my $mime;
1743         $filename =~ /\./ or return undef;
1744
1745         if ($mimetypes_file) {
1746                 my $file = $mimetypes_file;
1747                 if ($file !~ m!^/!) { # if it is relative path
1748                         # it is relative to project
1749                         $file = "$projectroot/$project/$file";
1750                 }
1751                 $mime = mimetype_guess_file($filename, $file);
1752         }
1753         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1754         return $mime;
1755 }
1756
1757 sub blob_mimetype {
1758         my $fd = shift;
1759         my $filename = shift;
1760
1761         if ($filename) {
1762                 my $mime = mimetype_guess($filename);
1763                 $mime and return $mime;
1764         }
1765
1766         # just in case
1767         return $default_blob_plain_mimetype unless $fd;
1768
1769         if (-T $fd) {
1770                 return 'text/plain' .
1771                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1772         } elsif (! $filename) {
1773                 return 'application/octet-stream';
1774         } elsif ($filename =~ m/\.png$/i) {
1775                 return 'image/png';
1776         } elsif ($filename =~ m/\.gif$/i) {
1777                 return 'image/gif';
1778         } elsif ($filename =~ m/\.jpe?g$/i) {
1779                 return 'image/jpeg';
1780         } else {
1781                 return 'application/octet-stream';
1782         }
1783 }
1784
1785 ## ======================================================================
1786 ## functions printing HTML: header, footer, error page
1787
1788 sub git_header_html {
1789         my $status = shift || "200 OK";
1790         my $expires = shift;
1791
1792         my $title = "$site_name";
1793         if (defined $project) {
1794                 $title .= " - " . decode_utf8($project);
1795                 if (defined $action) {
1796                         $title .= "/$action";
1797                         if (defined $file_name) {
1798                                 $title .= " - " . esc_path($file_name);
1799                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1800                                         $title .= "/";
1801                                 }
1802                         }
1803                 }
1804         }
1805         my $content_type;
1806         # require explicit support from the UA if we are to send the page as
1807         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1808         # we have to do this because MSIE sometimes globs '*/*', pretending to
1809         # support xhtml+xml but choking when it gets what it asked for.
1810         if (defined $cgi->http('HTTP_ACCEPT') &&
1811             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1812             $cgi->Accept('application/xhtml+xml') != 0) {
1813                 $content_type = 'application/xhtml+xml';
1814         } else {
1815                 $content_type = 'text/html';
1816         }
1817         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1818                            -status=> $status, -expires => $expires);
1819         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1820         print <<EOF;
1821 <?xml version="1.0" encoding="utf-8"?>
1822 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1823 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1824 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1825 <!-- git core binaries version $git_version -->
1826 <head>
1827 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1828 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1829 <meta name="robots" content="index, nofollow"/>
1830 <title>$title</title>
1831 EOF
1832 # print out each stylesheet that exist
1833         if (defined $stylesheet) {
1834 #provides backwards capability for those people who define style sheet in a config file
1835                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1836         } else {
1837                 foreach my $stylesheet (@stylesheets) {
1838                         next unless $stylesheet;
1839                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1840                 }
1841         }
1842         if (defined $project) {
1843                 printf('<link rel="alternate" title="%s log RSS feed" '.
1844                        'href="%s" type="application/rss+xml" />'."\n",
1845                        esc_param($project), href(action=>"rss"));
1846                 printf('<link rel="alternate" title="%s log Atom feed" '.
1847                        'href="%s" type="application/atom+xml" />'."\n",
1848                        esc_param($project), href(action=>"atom"));
1849         } else {
1850                 printf('<link rel="alternate" title="%s projects list" '.
1851                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1852                        $site_name, href(project=>undef, action=>"project_index"));
1853                 printf('<link rel="alternate" title="%s projects feeds" '.
1854                        'href="%s" type="text/x-opml"/>'."\n",
1855                        $site_name, href(project=>undef, action=>"opml"));
1856         }
1857         if (defined $favicon) {
1858                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1859         }
1860
1861         print "</head>\n" .
1862               "<body>\n";
1863
1864         if (-f $site_header) {
1865                 open (my $fd, $site_header);
1866                 print <$fd>;
1867                 close $fd;
1868         }
1869
1870         print "<div class=\"page_header\">\n" .
1871               $cgi->a({-href => esc_url($logo_url),
1872                        -title => $logo_label},
1873                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1874         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1875         if (defined $project) {
1876                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1877                 if (defined $action) {
1878                         print " / $action";
1879                 }
1880                 print "\n";
1881         }
1882         my ($have_search) = gitweb_check_feature('search');
1883         if ((defined $project) && ($have_search)) {
1884                 if (!defined $searchtext) {
1885                         $searchtext = "";
1886                 }
1887                 my $search_hash;
1888                 if (defined $hash_base) {
1889                         $search_hash = $hash_base;
1890                 } elsif (defined $hash) {
1891                         $search_hash = $hash;
1892                 } else {
1893                         $search_hash = "HEAD";
1894                 }
1895                 $cgi->param("a", "search");
1896                 $cgi->param("h", $search_hash);
1897                 $cgi->param("p", $project);
1898                 print $cgi->startform(-method => "get", -action => $my_uri) .
1899                       "<div class=\"search\">\n" .
1900                       $cgi->hidden(-name => "p") . "\n" .
1901                       $cgi->hidden(-name => "a") . "\n" .
1902                       $cgi->hidden(-name => "h") . "\n" .
1903                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1904                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1905                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1906                       " search:\n",
1907                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1908                       "</div>" .
1909                       $cgi->end_form() . "\n";
1910         }
1911         print "</div>\n";
1912 }
1913
1914 sub git_footer_html {
1915         print "<div class=\"page_footer\">\n";
1916         if (defined $project) {
1917                 my $descr = git_get_project_description($project);
1918                 if (defined $descr) {
1919                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1920                 }
1921                 print $cgi->a({-href => href(action=>"rss"),
1922                               -class => "rss_logo"}, "RSS") . " ";
1923                 print $cgi->a({-href => href(action=>"atom"),
1924                               -class => "rss_logo"}, "Atom") . "\n";
1925         } else {
1926                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1927                               -class => "rss_logo"}, "OPML") . " ";
1928                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1929                               -class => "rss_logo"}, "TXT") . "\n";
1930         }
1931         print "</div>\n" ;
1932
1933         if (-f $site_footer) {
1934                 open (my $fd, $site_footer);
1935                 print <$fd>;
1936                 close $fd;
1937         }
1938
1939         print "</body>\n" .
1940               "</html>";
1941 }
1942
1943 sub die_error {
1944         my $status = shift || "403 Forbidden";
1945         my $error = shift || "Malformed query, file missing or permission denied";
1946
1947         git_header_html($status);
1948         print <<EOF;
1949 <div class="page_body">
1950 <br /><br />
1951 $status - $error
1952 <br />
1953 </div>
1954 EOF
1955         git_footer_html();
1956         exit;
1957 }
1958
1959 ## ----------------------------------------------------------------------
1960 ## functions printing or outputting HTML: navigation
1961
1962 sub git_print_page_nav {
1963         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1964         $extra = '' if !defined $extra; # pager or formats
1965
1966         my @navs = qw(summary shortlog log commit commitdiff tree);
1967         if ($suppress) {
1968                 @navs = grep { $_ ne $suppress } @navs;
1969         }
1970
1971         my %arg = map { $_ => {action=>$_} } @navs;
1972         if (defined $head) {
1973                 for (qw(commit commitdiff)) {
1974                         $arg{$_}{'hash'} = $head;
1975                 }
1976                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1977                         for (qw(shortlog log)) {
1978                                 $arg{$_}{'hash'} = $head;
1979                         }
1980                 }
1981         }
1982         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1983         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1984
1985         print "<div class=\"page_nav\">\n" .
1986                 (join " | ",
1987                  map { $_ eq $current ?
1988                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1989                  } @navs);
1990         print "<br/>\n$extra<br/>\n" .
1991               "</div>\n";
1992 }
1993
1994 sub format_paging_nav {
1995         my ($action, $hash, $head, $page, $nrevs) = @_;
1996         my $paging_nav;
1997
1998
1999         if ($hash ne $head || $page) {
2000                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2001         } else {
2002                 $paging_nav .= "HEAD";
2003         }
2004
2005         if ($page > 0) {
2006                 $paging_nav .= " &sdot; " .
2007                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2008                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2009         } else {
2010                 $paging_nav .= " &sdot; prev";
2011         }
2012
2013         if ($nrevs >= (100 * ($page+1)-1)) {
2014                 $paging_nav .= " &sdot; " .
2015                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2016                                  -accesskey => "n", -title => "Alt-n"}, "next");
2017         } else {
2018                 $paging_nav .= " &sdot; next";
2019         }
2020
2021         return $paging_nav;
2022 }
2023
2024 ## ......................................................................
2025 ## functions printing or outputting HTML: div
2026
2027 sub git_print_header_div {
2028         my ($action, $title, $hash, $hash_base) = @_;
2029         my %args = ();
2030
2031         $args{'action'} = $action;
2032         $args{'hash'} = $hash if $hash;
2033         $args{'hash_base'} = $hash_base if $hash_base;
2034
2035         print "<div class=\"header\">\n" .
2036               $cgi->a({-href => href(%args), -class => "title"},
2037               $title ? $title : $action) .
2038               "\n</div>\n";
2039 }
2040
2041 #sub git_print_authorship (\%) {
2042 sub git_print_authorship {
2043         my $co = shift;
2044
2045         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2046         print "<div class=\"author_date\">" .
2047               esc_html($co->{'author_name'}) .
2048               " [$ad{'rfc2822'}";
2049         if ($ad{'hour_local'} < 6) {
2050                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2051                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2052         } else {
2053                 printf(" (%02d:%02d %s)",
2054                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2055         }
2056         print "]</div>\n";
2057 }
2058
2059 sub git_print_page_path {
2060         my $name = shift;
2061         my $type = shift;
2062         my $hb = shift;
2063
2064
2065         print "<div class=\"page_path\">";
2066         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2067                       -title => 'tree root'}, decode_utf8("[$project]"));
2068         print " / ";
2069         if (defined $name) {
2070                 my @dirname = split '/', $name;
2071                 my $basename = pop @dirname;
2072                 my $fullname = '';
2073
2074                 foreach my $dir (@dirname) {
2075                         $fullname .= ($fullname ? '/' : '') . $dir;
2076                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2077                                                      hash_base=>$hb),
2078                                       -title => $fullname}, esc_path($dir));
2079                         print " / ";
2080                 }
2081                 if (defined $type && $type eq 'blob') {
2082                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2083                                                      hash_base=>$hb),
2084                                       -title => $name}, esc_path($basename));
2085                 } elsif (defined $type && $type eq 'tree') {
2086                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2087                                                      hash_base=>$hb),
2088                                       -title => $name}, esc_path($basename));
2089                         print " / ";
2090                 } else {
2091                         print esc_path($basename);
2092                 }
2093         }
2094         print "<br/></div>\n";
2095 }
2096
2097 # sub git_print_log (\@;%) {
2098 sub git_print_log ($;%) {
2099         my $log = shift;
2100         my %opts = @_;
2101
2102         if ($opts{'-remove_title'}) {
2103                 # remove title, i.e. first line of log
2104                 shift @$log;
2105         }
2106         # remove leading empty lines
2107         while (defined $log->[0] && $log->[0] eq "") {
2108                 shift @$log;
2109         }
2110
2111         # print log
2112         my $signoff = 0;
2113         my $empty = 0;
2114         foreach my $line (@$log) {
2115                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2116                         $signoff = 1;
2117                         $empty = 0;
2118                         if (! $opts{'-remove_signoff'}) {
2119                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2120                                 next;
2121                         } else {
2122                                 # remove signoff lines
2123                                 next;
2124                         }
2125                 } else {
2126                         $signoff = 0;
2127                 }
2128
2129                 # print only one empty line
2130                 # do not print empty line after signoff
2131                 if ($line eq "") {
2132                         next if ($empty || $signoff);
2133                         $empty = 1;
2134                 } else {
2135                         $empty = 0;
2136                 }
2137
2138                 print format_log_line_html($line) . "<br/>\n";
2139         }
2140
2141         if ($opts{'-final_empty_line'}) {
2142                 # end with single empty line
2143                 print "<br/>\n" unless $empty;
2144         }
2145 }
2146
2147 # return link target (what link points to)
2148 sub git_get_link_target {
2149         my $hash = shift;
2150         my $link_target;
2151
2152         # read link
2153         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2154                 or return;
2155         {
2156                 local $/;
2157                 $link_target = <$fd>;
2158         }
2159         close $fd
2160                 or return;
2161
2162         return $link_target;
2163 }
2164
2165 # given link target, and the directory (basedir) the link is in,
2166 # return target of link relative to top directory (top tree);
2167 # return undef if it is not possible (including absolute links).
2168 sub normalize_link_target {
2169         my ($link_target, $basedir, $hash_base) = @_;
2170
2171         # we can normalize symlink target only if $hash_base is provided
2172         return unless $hash_base;
2173
2174         # absolute symlinks (beginning with '/') cannot be normalized
2175         return if (substr($link_target, 0, 1) eq '/');
2176
2177         # normalize link target to path from top (root) tree (dir)
2178         my $path;
2179         if ($basedir) {
2180                 $path = $basedir . '/' . $link_target;
2181         } else {
2182                 # we are in top (root) tree (dir)
2183                 $path = $link_target;
2184         }
2185
2186         # remove //, /./, and /../
2187         my @path_parts;
2188         foreach my $part (split('/', $path)) {
2189                 # discard '.' and ''
2190                 next if (!$part || $part eq '.');
2191                 # handle '..'
2192                 if ($part eq '..') {
2193                         if (@path_parts) {
2194                                 pop @path_parts;
2195                         } else {
2196                                 # link leads outside repository (outside top dir)
2197                                 return;
2198                         }
2199                 } else {
2200                         push @path_parts, $part;
2201                 }
2202         }
2203         $path = join('/', @path_parts);
2204
2205         return $path;
2206 }
2207
2208 # print tree entry (row of git_tree), but without encompassing <tr> element
2209 sub git_print_tree_entry {
2210         my ($t, $basedir, $hash_base, $have_blame) = @_;
2211
2212         my %base_key = ();
2213         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2214
2215         # The format of a table row is: mode list link.  Where mode is
2216         # the mode of the entry, list is the name of the entry, an href,
2217         # and link is the action links of the entry.
2218
2219         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2220         if ($t->{'type'} eq "blob") {
2221                 print "<td class=\"list\">" .
2222                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2223                                                file_name=>"$basedir$t->{'name'}", %base_key),
2224                                 -class => "list"}, esc_path($t->{'name'}));
2225                 if (S_ISLNK(oct $t->{'mode'})) {
2226                         my $link_target = git_get_link_target($t->{'hash'});
2227                         if ($link_target) {
2228                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2229                                 if (defined $norm_target) {
2230                                         print " -> " .
2231                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2232                                                                      file_name=>$norm_target),
2233                                                        -title => $norm_target}, esc_path($link_target));
2234                                 } else {
2235                                         print " -> " . esc_path($link_target);
2236                                 }
2237                         }
2238                 }
2239                 print "</td>\n";
2240                 print "<td class=\"link\">";
2241                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2242                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2243                               "blob");
2244                 if ($have_blame) {
2245                         print " | " .
2246                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2247                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2248                                       "blame");
2249                 }
2250                 if (defined $hash_base) {
2251                         print " | " .
2252                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2253                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2254                                       "history");
2255                 }
2256                 print " | " .
2257                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2258                                                file_name=>"$basedir$t->{'name'}")},
2259                                 "raw");
2260                 print "</td>\n";
2261
2262         } elsif ($t->{'type'} eq "tree") {
2263                 print "<td class=\"list\">";
2264                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2265                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2266                               esc_path($t->{'name'}));
2267                 print "</td>\n";
2268                 print "<td class=\"link\">";
2269                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2270                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2271                               "tree");
2272                 if (defined $hash_base) {
2273                         print " | " .
2274                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2275                                                      file_name=>"$basedir$t->{'name'}")},
2276                                       "history");
2277                 }
2278                 print "</td>\n";
2279         }
2280 }
2281
2282 ## ......................................................................
2283 ## functions printing large fragments of HTML
2284
2285 sub fill_from_file_info {
2286         my ($diff, @parents) = @_;
2287
2288         $diff->{'from_file'} = [ ];
2289         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2290         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2291                 if ($diff->{'status'}[$i] eq 'R' ||
2292                     $diff->{'status'}[$i] eq 'C') {
2293                         $diff->{'from_file'}[$i] =
2294                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2295                 }
2296         }
2297
2298         return $diff;
2299 }
2300
2301 # parameters can be strings, or references to arrays of strings
2302 sub from_ids_eq {
2303         my ($a, $b) = @_;
2304
2305         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2306                 for (my $i = 0; $i < @$a; ++$i) {
2307                         return 0 unless ($a->[$i] eq $b->[$i]);
2308                 }
2309                 return 1;
2310         } elsif (!ref($a) && !ref($b)) {
2311                 return $a eq $b;
2312         } else {
2313                 return 0;
2314         }
2315 }
2316
2317
2318 sub git_difftree_body {
2319         my ($difftree, $hash, @parents) = @_;
2320         my ($parent) = $parents[0];
2321         my ($have_blame) = gitweb_check_feature('blame');
2322         print "<div class=\"list_head\">\n";
2323         if ($#{$difftree} > 10) {
2324                 print(($#{$difftree} + 1) . " files changed:\n");
2325         }
2326         print "</div>\n";
2327
2328         print "<table class=\"" .
2329               (@parents > 1 ? "combined " : "") .
2330               "diff_tree\">\n";
2331         my $alternate = 1;
2332         my $patchno = 0;
2333         foreach my $line (@{$difftree}) {
2334                 my $diff;
2335                 if (ref($line) eq "HASH") {
2336                         # pre-parsed (or generated by hand)
2337                         $diff = $line;
2338                 } else {
2339                         $diff = parse_difftree_raw_line($line);
2340                 }
2341
2342                 if ($alternate) {
2343                         print "<tr class=\"dark\">\n";
2344                 } else {
2345                         print "<tr class=\"light\">\n";
2346                 }
2347                 $alternate ^= 1;
2348
2349                 if (exists $diff->{'nparents'}) { # combined diff
2350
2351                         fill_from_file_info($diff, @parents)
2352                                 unless exists $diff->{'from_file'};
2353
2354                         if ($diff->{'to_id'} ne ('0' x 40)) {
2355                                 # file exists in the result (child) commit
2356                                 print "<td>" .
2357                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2358                                                              file_name=>$diff->{'to_file'},
2359                                                              hash_base=>$hash),
2360                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2361                                       "</td>\n";
2362                         } else {
2363                                 print "<td>" .
2364                                       esc_path($diff->{'to_file'}) .
2365                                       "</td>\n";
2366                         }
2367
2368                         if ($action eq 'commitdiff') {
2369                                 # link to patch
2370                                 $patchno++;
2371                                 print "<td class=\"link\">" .
2372                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2373                                       " | " .
2374                                       "</td>\n";
2375                         }
2376
2377                         my $has_history = 0;
2378                         my $not_deleted = 0;
2379                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2380                                 my $hash_parent = $parents[$i];
2381                                 my $from_hash = $diff->{'from_id'}[$i];
2382                                 my $from_path = $diff->{'from_file'}[$i];
2383                                 my $status = $diff->{'status'}[$i];
2384
2385                                 $has_history ||= ($status ne 'A');
2386                                 $not_deleted ||= ($status ne 'D');
2387
2388                                 if ($status eq 'A') {
2389                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2390                                 } elsif ($status eq 'D') {
2391                                         print "<td class=\"link\">" .
2392                                               $cgi->a({-href => href(action=>"blob",
2393                                                                      hash_base=>$hash,
2394                                                                      hash=>$from_hash,
2395                                                                      file_name=>$from_path)},
2396                                                       "blob" . ($i+1)) .
2397                                               " | </td>\n";
2398                                 } else {
2399                                         if ($diff->{'to_id'} eq $from_hash) {
2400                                                 print "<td class=\"link nochange\">";
2401                                         } else {
2402                                                 print "<td class=\"link\">";
2403                                         }
2404                                         print $cgi->a({-href => href(action=>"blobdiff",
2405                                                                      hash=>$diff->{'to_id'},
2406                                                                      hash_parent=>$from_hash,
2407                                                                      hash_base=>$hash,
2408                                                                      hash_parent_base=>$hash_parent,
2409                                                                      file_name=>$diff->{'to_file'},
2410                                                                      file_parent=>$from_path)},
2411                                                       "diff" . ($i+1)) .
2412                                               " | </td>\n";
2413                                 }
2414                         }
2415
2416                         print "<td class=\"link\">";
2417                         if ($not_deleted) {
2418                                 print $cgi->a({-href => href(action=>"blob",
2419                                                              hash=>$diff->{'to_id'},
2420                                                              file_name=>$diff->{'to_file'},
2421                                                              hash_base=>$hash)},
2422                                               "blob");
2423                                 print " | " if ($has_history);
2424                         }
2425                         if ($has_history) {
2426                                 print $cgi->a({-href => href(action=>"history",
2427                                                              file_name=>$diff->{'to_file'},
2428                                                              hash_base=>$hash)},
2429                                               "history");
2430                         }
2431                         print "</td>\n";
2432
2433                         print "</tr>\n";
2434                         next; # instead of 'else' clause, to avoid extra indent
2435                 }
2436                 # else ordinary diff
2437
2438                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2439                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2440                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2441                         $to_mode_oct = oct $diff->{'to_mode'};
2442                         if (S_ISREG($to_mode_oct)) { # only for regular file
2443                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2444                         }
2445                         $to_file_type = file_type($diff->{'to_mode'});
2446                 }
2447                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2448                         $from_mode_oct = oct $diff->{'from_mode'};
2449                         if (S_ISREG($to_mode_oct)) { # only for regular file
2450                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2451                         }
2452                         $from_file_type = file_type($diff->{'from_mode'});
2453                 }
2454
2455                 if ($diff->{'status'} eq "A") { # created
2456                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2457                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2458                         $mode_chng   .= "]</span>";
2459                         print "<td>";
2460                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2461                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2462                                       -class => "list"}, esc_path($diff->{'file'}));
2463                         print "</td>\n";
2464                         print "<td>$mode_chng</td>\n";
2465                         print "<td class=\"link\">";
2466                         if ($action eq 'commitdiff') {
2467                                 # link to patch
2468                                 $patchno++;
2469                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2470                                 print " | ";
2471                         }
2472                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2473                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2474                                       "blob");
2475                         print "</td>\n";
2476
2477                 } elsif ($diff->{'status'} eq "D") { # deleted
2478                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2479                         print "<td>";
2480                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2481                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2482                                        -class => "list"}, esc_path($diff->{'file'}));
2483                         print "</td>\n";
2484                         print "<td>$mode_chng</td>\n";
2485                         print "<td class=\"link\">";
2486                         if ($action eq 'commitdiff') {
2487                                 # link to patch
2488                                 $patchno++;
2489                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2490                                 print " | ";
2491                         }
2492                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2493                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2494                                       "blob") . " | ";
2495                         if ($have_blame) {
2496                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2497                                                              file_name=>$diff->{'file'})},
2498                                               "blame") . " | ";
2499                         }
2500                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2501                                                      file_name=>$diff->{'file'})},
2502                                       "history");
2503                         print "</td>\n";
2504
2505                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2506                         my $mode_chnge = "";
2507                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2508                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2509                                 if ($from_file_type ne $to_file_type) {
2510                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2511                                 }
2512                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2513                                         if ($from_mode_str && $to_mode_str) {
2514                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2515                                         } elsif ($to_mode_str) {
2516                                                 $mode_chnge .= " mode: $to_mode_str";
2517                                         }
2518                                 }
2519                                 $mode_chnge .= "]</span>\n";
2520                         }
2521                         print "<td>";
2522                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2523                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2524                                       -class => "list"}, esc_path($diff->{'file'}));
2525                         print "</td>\n";
2526                         print "<td>$mode_chnge</td>\n";
2527                         print "<td class=\"link\">";
2528                         if ($action eq 'commitdiff') {
2529                                 # link to patch
2530                                 $patchno++;
2531                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2532                                       " | ";
2533                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2534                                 # "commit" view and modified file (not onlu mode changed)
2535                                 print $cgi->a({-href => href(action=>"blobdiff",
2536                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2537                                                              hash_base=>$hash, hash_parent_base=>$parent,
2538                                                              file_name=>$diff->{'file'})},
2539                                               "diff") .
2540                                       " | ";
2541                         }
2542                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2543                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2544                                        "blob") . " | ";
2545                         if ($have_blame) {
2546                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2547                                                              file_name=>$diff->{'file'})},
2548                                               "blame") . " | ";
2549                         }
2550                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2551                                                      file_name=>$diff->{'file'})},
2552                                       "history");
2553                         print "</td>\n";
2554
2555                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2556                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2557                         my $nstatus = $status_name{$diff->{'status'}};
2558                         my $mode_chng = "";
2559                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2560                                 # mode also for directories, so we cannot use $to_mode_str
2561                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2562                         }
2563                         print "<td>" .
2564                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2565                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2566                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2567                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2568                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2569                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2570                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2571                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2572                               "<td class=\"link\">";
2573                         if ($action eq 'commitdiff') {
2574                                 # link to patch
2575                                 $patchno++;
2576                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2577                                       " | ";
2578                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2579                                 # "commit" view and modified file (not only pure rename or copy)
2580                                 print $cgi->a({-href => href(action=>"blobdiff",
2581                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2582                                                              hash_base=>$hash, hash_parent_base=>$parent,
2583                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2584                                               "diff") .
2585                                       " | ";
2586                         }
2587                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2588                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2589                                       "blob") . " | ";
2590                         if ($have_blame) {
2591                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2592                                                              file_name=>$diff->{'to_file'})},
2593                                               "blame") . " | ";
2594                         }
2595                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2596                                                     file_name=>$diff->{'to_file'})},
2597                                       "history");
2598                         print "</td>\n";
2599
2600                 } # we should not encounter Unmerged (U) or Unknown (X) status
2601                 print "</tr>\n";
2602         }
2603         print "</table>\n";
2604 }
2605
2606 sub git_patchset_body {
2607         my ($fd, $difftree, $hash, @hash_parents) = @_;
2608         my ($hash_parent) = $hash_parents[0];
2609
2610         my $patch_idx = 0;
2611         my $patch_number = 0;
2612         my $patch_line;
2613         my $diffinfo;
2614         my (%from, %to);
2615
2616         print "<div class=\"patchset\">\n";
2617
2618         # skip to first patch
2619         while ($patch_line = <$fd>) {
2620                 chomp $patch_line;
2621
2622                 last if ($patch_line =~ m/^diff /);
2623         }
2624
2625  PATCH:
2626         while ($patch_line) {
2627                 my @diff_header;
2628                 my ($from_id, $to_id);
2629
2630                 # git diff header
2631                 #assert($patch_line =~ m/^diff /) if DEBUG;
2632                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2633                 $patch_number++;
2634                 push @diff_header, $patch_line;
2635
2636                 # extended diff header
2637         EXTENDED_HEADER:
2638                 while ($patch_line = <$fd>) {
2639                         chomp $patch_line;
2640
2641                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2642
2643                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2644                                 $from_id = $1;
2645                                 $to_id   = $2;
2646                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2647                                 $from_id = [ split(',', $1) ];
2648                                 $to_id   = $2;
2649                         }
2650
2651                         push @diff_header, $patch_line;
2652                 }
2653                 my $last_patch_line = $patch_line;
2654
2655                 # check if current patch belong to current raw line
2656                 # and parse raw git-diff line if needed
2657                 if (defined $diffinfo &&
2658                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2659                     $diffinfo->{'to_id'} eq $to_id) {
2660                         # this is split patch
2661                         print "<div class=\"patch cont\">\n";
2662                 } else {
2663                         # advance raw git-diff output if needed
2664                         $patch_idx++ if defined $diffinfo;
2665
2666                         # read and prepare patch information
2667                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2668                                 # pre-parsed (or generated by hand)
2669                                 $diffinfo = $difftree->[$patch_idx];
2670                         } else {
2671                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2672                         }
2673                         if ($diffinfo->{'nparents'}) {
2674                                 # combined diff
2675                                 $from{'file'} = [];
2676                                 $from{'href'} = [];
2677                                 fill_from_file_info($diffinfo, @hash_parents)
2678                                         unless exists $diffinfo->{'from_file'};
2679                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2680                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2681                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2682                                                 $from{'href'}[$i] = href(action=>"blob",
2683                                                                          hash_base=>$hash_parents[$i],
2684                                                                          hash=>$diffinfo->{'from_id'}[$i],
2685                                                                          file_name=>$from{'file'}[$i]);
2686                                         } else {
2687                                                 $from{'href'}[$i] = undef;
2688                                         }
2689                                 }
2690                         } else {
2691                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2692                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2693                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2694                                                              hash=>$diffinfo->{'from_id'},
2695                                                              file_name=>$from{'file'});
2696                                 } else {
2697                                         delete $from{'href'};
2698                                 }
2699                         }
2700                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2701                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2702                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2703                                                    hash=>$diffinfo->{'to_id'},
2704                                                    file_name=>$to{'file'});
2705                         } else {
2706                                 delete $to{'href'};
2707                         }
2708                         # this is first patch for raw difftree line with $patch_idx index
2709                         # we index @$difftree array from 0, but number patches from 1
2710                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2711                 }
2712
2713                 # print "git diff" header
2714                 $patch_line = shift @diff_header;
2715                 if ($diffinfo->{'nparents'}) {
2716
2717                         # combined diff
2718                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2719                         if ($to{'href'}) {
2720                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2721                                                        esc_path($to{'file'}));
2722                         } else { # file was deleted
2723                                 $patch_line .= esc_path($to{'file'});
2724                         }
2725
2726                 } else {
2727
2728                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2729                         if ($from{'href'}) {
2730                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2731                                                        'a/' . esc_path($from{'file'}));
2732                         } else { # file was added
2733                                 $patch_line .= 'a/' . esc_path($from{'file'});
2734                         }
2735                         $patch_line .= ' ';
2736                         if ($to{'href'}) {
2737                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2738                                                        'b/' . esc_path($to{'file'}));
2739                         } else { # file was deleted
2740                                 $patch_line .= 'b/' . esc_path($to{'file'});
2741                         }
2742
2743                 }
2744                 print "<div class=\"diff header\">$patch_line</div>\n";
2745
2746                 # print extended diff header
2747                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2748         EXTENDED_HEADER:
2749                 foreach $patch_line (@diff_header) {
2750                         # match <path>
2751                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2752                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2753                                                        esc_path($from{'file'}));
2754                         }
2755                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2756                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2757                                                        esc_path($to{'file'}));
2758                         }
2759                         # match single <mode>
2760                         if ($patch_line =~ m/\s(\d{6})$/) {
2761                                 $patch_line .= '<span class="info"> (' .
2762                                                file_type_long($1) .
2763                                                ')</span>';
2764                         }
2765                         # match <hash>
2766                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2767                                 # can match only for combined diff
2768                                 $patch_line = 'index ';
2769                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2770                                         if ($from{'href'}[$i]) {
2771                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2772                                                                         -class=>"hash"},
2773                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2774                                         } else {
2775                                                 $patch_line .= '0' x 7;
2776                                         }
2777                                         # separator
2778                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2779                                 }
2780                                 $patch_line .= '..';
2781                                 if ($to{'href'}) {
2782                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2783                                                                substr($diffinfo->{'to_id'},0,7));
2784                                 } else {
2785                                         $patch_line .= '0' x 7;
2786                                 }
2787
2788                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2789                                 # can match only for ordinary diff
2790                                 my ($from_link, $to_link);
2791                                 if ($from{'href'}) {
2792                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2793                                                              substr($diffinfo->{'from_id'},0,7));
2794                                 } else {
2795                                         $from_link = '0' x 7;
2796                                 }
2797                                 if ($to{'href'}) {
2798                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2799                                                            substr($diffinfo->{'to_id'},0,7));
2800                                 } else {
2801                                         $to_link = '0' x 7;
2802                                 }
2803                                 #affirm {
2804                                 #       my ($from_hash, $to_hash) =
2805                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2806                                 #       my ($from_id, $to_id) =
2807                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2808                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2809                                 #} if DEBUG;
2810                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2811                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2812                         }
2813                         print $patch_line . "<br/>\n";
2814                 }
2815                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2816
2817                 # from-file/to-file diff header
2818                 $patch_line = $last_patch_line;
2819                 if (! $patch_line) {
2820                         print "</div>\n"; # class="patch"
2821                         last PATCH;
2822                 }
2823                 next PATCH if ($patch_line =~ m/^diff /);
2824                 #assert($patch_line =~ m/^---/) if DEBUG;
2825                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2826                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2827                         $patch_line = '--- a/' .
2828                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2829                                               esc_path($from{'file'}));
2830                 }
2831                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2832
2833                 $patch_line = <$fd>;
2834                 chomp $patch_line;
2835
2836                 #assert($patch_line =~ m/^+++/) if DEBUG;
2837                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2838                         $patch_line = '+++ b/' .
2839                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2840                                               esc_path($to{'file'}));
2841                 }
2842                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2843
2844                 # the patch itself
2845         LINE:
2846                 while ($patch_line = <$fd>) {
2847                         chomp $patch_line;
2848
2849                         next PATCH if ($patch_line =~ m/^diff /);
2850
2851                         print format_diff_line($patch_line, \%from, \%to);
2852                 }
2853
2854         } continue {
2855                 print "</div>\n"; # class="patch"
2856         }
2857         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2858
2859         print "</div>\n"; # class="patchset"
2860 }
2861
2862 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2863
2864 sub git_project_list_body {
2865         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2866
2867         my ($check_forks) = gitweb_check_feature('forks');
2868
2869         my @projects;
2870         foreach my $pr (@$projlist) {
2871                 my (@aa) = git_get_last_activity($pr->{'path'});
2872                 unless (@aa) {
2873                         next;
2874                 }
2875                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2876                 if (!defined $pr->{'descr'}) {
2877                         my $descr = git_get_project_description($pr->{'path'}) || "";
2878                         $pr->{'descr_long'} = decode_utf8($descr);
2879                         $pr->{'descr'} = chop_str($descr, 25, 5);
2880                 }
2881                 if (!defined $pr->{'owner'}) {
2882                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2883                 }
2884                 if ($check_forks) {
2885                         my $pname = $pr->{'path'};
2886                         if (($pname =~ s/\.git$//) &&
2887                             ($pname !~ /\/$/) &&
2888                             (-d "$projectroot/$pname")) {
2889                                 $pr->{'forks'} = "-d $projectroot/$pname";
2890                         }
2891                         else {
2892                                 $pr->{'forks'} = 0;
2893                         }
2894                 }
2895                 push @projects, $pr;
2896         }
2897
2898         $order ||= $default_projects_order;
2899         $from = 0 unless defined $from;
2900         $to = $#projects if (!defined $to || $#projects < $to);
2901
2902         print "<table class=\"project_list\">\n";
2903         unless ($no_header) {
2904                 print "<tr>\n";
2905                 if ($check_forks) {
2906                         print "<th></th>\n";
2907                 }
2908                 if ($order eq "project") {
2909                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2910                         print "<th>Project</th>\n";
2911                 } else {
2912                         print "<th>" .
2913                               $cgi->a({-href => href(project=>undef, order=>'project'),
2914                                        -class => "header"}, "Project") .
2915                               "</th>\n";
2916                 }
2917                 if ($order eq "descr") {
2918                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2919                         print "<th>Description</th>\n";
2920                 } else {
2921                         print "<th>" .
2922                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2923                                        -class => "header"}, "Description") .
2924                               "</th>\n";
2925                 }
2926                 if ($order eq "owner") {
2927                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2928                         print "<th>Owner</th>\n";
2929                 } else {
2930                         print "<th>" .
2931                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2932                                        -class => "header"}, "Owner") .
2933                               "</th>\n";
2934                 }
2935                 if ($order eq "age") {
2936                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2937                         print "<th>Last Change</th>\n";
2938                 } else {
2939                         print "<th>" .
2940                               $cgi->a({-href => href(project=>undef, order=>'age'),
2941                                        -class => "header"}, "Last Change") .
2942                               "</th>\n";
2943                 }
2944                 print "<th></th>\n" .
2945                       "</tr>\n";
2946         }
2947         my $alternate = 1;
2948         for (my $i = $from; $i <= $to; $i++) {
2949                 my $pr = $projects[$i];
2950                 if ($alternate) {
2951                         print "<tr class=\"dark\">\n";
2952                 } else {
2953                         print "<tr class=\"light\">\n";
2954                 }
2955                 $alternate ^= 1;
2956                 if ($check_forks) {
2957                         print "<td>";
2958                         if ($pr->{'forks'}) {
2959                                 print "<!-- $pr->{'forks'} -->\n";
2960                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2961                         }
2962                         print "</td>\n";
2963                 }
2964                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2965                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2966                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2967                                         -class => "list", -title => $pr->{'descr_long'}},
2968                                         esc_html($pr->{'descr'})) . "</td>\n" .
2969                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2970                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2971                       $pr->{'age_string'} . "</td>\n" .
2972                       "<td class=\"link\">" .
2973                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2974                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2975                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2976                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2977                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2978                       "</td>\n" .
2979                       "</tr>\n";
2980         }
2981         if (defined $extra) {
2982                 print "<tr>\n";
2983                 if ($check_forks) {
2984                         print "<td></td>\n";
2985                 }
2986                 print "<td colspan=\"5\">$extra</td>\n" .
2987                       "</tr>\n";
2988         }
2989         print "</table>\n";
2990 }
2991
2992 sub git_shortlog_body {
2993         # uses global variable $project
2994         my ($commitlist, $from, $to, $refs, $extra) = @_;
2995
2996         my $have_snapshot = gitweb_have_snapshot();
2997
2998         $from = 0 unless defined $from;
2999         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3000
3001         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3002         my $alternate = 1;
3003         for (my $i = $from; $i <= $to; $i++) {
3004                 my %co = %{$commitlist->[$i]};
3005                 my $commit = $co{'id'};
3006                 my $ref = format_ref_marker($refs, $commit);
3007                 if ($alternate) {
3008                         print "<tr class=\"dark\">\n";
3009                 } else {
3010                         print "<tr class=\"light\">\n";
3011                 }
3012                 $alternate ^= 1;
3013                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3014                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3015                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3016                       "<td>";
3017                 print format_subject_html($co{'title'}, $co{'title_short'},
3018                                           href(action=>"commit", hash=>$commit), $ref);
3019                 print "</td>\n" .
3020                       "<td class=\"link\">" .
3021                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3022                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3023                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3024                 if ($have_snapshot) {
3025                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3026                 }
3027                 print "</td>\n" .
3028                       "</tr>\n";
3029         }
3030         if (defined $extra) {
3031                 print "<tr>\n" .
3032                       "<td colspan=\"4\">$extra</td>\n" .
3033                       "</tr>\n";
3034         }
3035         print "</table>\n";
3036 }
3037
3038 sub git_history_body {
3039         # Warning: assumes constant type (blob or tree) during history
3040         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3041
3042         $from = 0 unless defined $from;
3043         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3044
3045         print "<table class=\"history\" cellspacing=\"0\">\n";
3046         my $alternate = 1;
3047         for (my $i = $from; $i <= $to; $i++) {
3048                 my %co = %{$commitlist->[$i]};
3049                 if (!%co) {
3050                         next;
3051                 }
3052                 my $commit = $co{'id'};
3053
3054                 my $ref = format_ref_marker($refs, $commit);
3055
3056                 if ($alternate) {
3057                         print "<tr class=\"dark\">\n";
3058                 } else {
3059                         print "<tr class=\"light\">\n";
3060                 }
3061                 $alternate ^= 1;
3062                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3063                       # shortlog uses      chop_str($co{'author_name'}, 10)
3064                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3065                       "<td>";
3066                 # originally git_history used chop_str($co{'title'}, 50)
3067                 print format_subject_html($co{'title'}, $co{'title_short'},
3068                                           href(action=>"commit", hash=>$commit), $ref);
3069                 print "</td>\n" .
3070                       "<td class=\"link\">" .
3071                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3072                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3073
3074                 if ($ftype eq 'blob') {
3075                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3076                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3077                         if (defined $blob_current && defined $blob_parent &&
3078                                         $blob_current ne $blob_parent) {
3079                                 print " | " .
3080                                         $cgi->a({-href => href(action=>"blobdiff",
3081                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3082                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3083                                                                file_name=>$file_name)},
3084                                                 "diff to current");
3085                         }
3086                 }
3087                 print "</td>\n" .
3088                       "</tr>\n";
3089         }
3090         if (defined $extra) {
3091                 print "<tr>\n" .
3092                       "<td colspan=\"4\">$extra</td>\n" .
3093                       "</tr>\n";
3094         }
3095         print "</table>\n";
3096 }
3097
3098 sub git_tags_body {
3099         # uses global variable $project
3100         my ($taglist, $from, $to, $extra) = @_;
3101         $from = 0 unless defined $from;
3102         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3103
3104         print "<table class=\"tags\" cellspacing=\"0\">\n";
3105         my $alternate = 1;
3106         for (my $i = $from; $i <= $to; $i++) {
3107                 my $entry = $taglist->[$i];
3108                 my %tag = %$entry;
3109                 my $comment = $tag{'subject'};
3110                 my $comment_short;
3111                 if (defined $comment) {
3112                         $comment_short = chop_str($comment, 30, 5);
3113                 }
3114                 if ($alternate) {
3115                         print "<tr class=\"dark\">\n";
3116                 } else {
3117                         print "<tr class=\"light\">\n";
3118                 }
3119                 $alternate ^= 1;
3120                 if (defined $tag{'age'}) {
3121                         print "<td><i>$tag{'age'}</i></td>\n";
3122                 } else {
3123                         print "<td></td>\n";
3124                 }
3125                 print "<td>" .
3126                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3127                                -class => "list name"}, esc_html($tag{'name'})) .
3128                       "</td>\n" .
3129                       "<td>";
3130                 if (defined $comment) {
3131                         print format_subject_html($comment, $comment_short,
3132                                                   href(action=>"tag", hash=>$tag{'id'}));
3133                 }
3134                 print "</td>\n" .
3135                       "<td class=\"selflink\">";
3136                 if ($tag{'type'} eq "tag") {
3137                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3138                 } else {
3139                         print "&nbsp;";
3140                 }
3141                 print "</td>\n" .
3142                       "<td class=\"link\">" . " | " .
3143                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3144                 if ($tag{'reftype'} eq "commit") {
3145                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3146                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3147                 } elsif ($tag{'reftype'} eq "blob") {
3148                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3149                 }
3150                 print "</td>\n" .
3151                       "</tr>";
3152         }
3153         if (defined $extra) {
3154                 print "<tr>\n" .
3155                       "<td colspan=\"5\">$extra</td>\n" .
3156                       "</tr>\n";
3157         }
3158         print "</table>\n";
3159 }
3160
3161 sub git_heads_body {
3162         # uses global variable $project
3163         my ($headlist, $head, $from, $to, $extra) = @_;
3164         $from = 0 unless defined $from;
3165         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3166
3167         print "<table class=\"heads\" cellspacing=\"0\">\n";
3168         my $alternate = 1;
3169         for (my $i = $from; $i <= $to; $i++) {
3170                 my $entry = $headlist->[$i];
3171                 my %ref = %$entry;
3172                 my $curr = $ref{'id'} eq $head;
3173                 if ($alternate) {
3174                         print "<tr class=\"dark\">\n";
3175                 } else {
3176                         print "<tr class=\"light\">\n";
3177                 }
3178                 $alternate ^= 1;
3179                 print "<td><i>$ref{'age'}</i></td>\n" .
3180                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3181                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3182                                -class => "list name"},esc_html($ref{'name'})) .
3183                       "</td>\n" .
3184                       "<td class=\"link\">" .
3185                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3186                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3187                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3188                       "</td>\n" .
3189                       "</tr>";
3190         }
3191         if (defined $extra) {
3192                 print "<tr>\n" .
3193                       "<td colspan=\"3\">$extra</td>\n" .
3194                       "</tr>\n";
3195         }
3196         print "</table>\n";
3197 }
3198
3199 sub git_search_grep_body {
3200         my ($commitlist, $from, $to, $extra) = @_;
3201         $from = 0 unless defined $from;
3202         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3203
3204         print "<table class=\"grep\" cellspacing=\"0\">\n";
3205         my $alternate = 1;
3206         for (my $i = $from; $i <= $to; $i++) {
3207                 my %co = %{$commitlist->[$i]};
3208                 if (!%co) {
3209                         next;
3210                 }
3211                 my $commit = $co{'id'};
3212                 if ($alternate) {
3213                         print "<tr class=\"dark\">\n";
3214                 } else {
3215                         print "<tr class=\"light\">\n";
3216                 }
3217                 $alternate ^= 1;
3218                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3219                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3220                       "<td>" .
3221                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3222                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3223                 my $comment = $co{'comment'};
3224                 foreach my $line (@$comment) {
3225                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3226                                 my $lead = esc_html($1) || "";
3227                                 $lead = chop_str($lead, 30, 10);
3228                                 my $match = esc_html($2) || "";
3229                                 my $trail = esc_html($3) || "";
3230                                 $trail = chop_str($trail, 30, 10);
3231                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3232                                 print chop_str($text, 80, 5) . "<br/>\n";
3233                         }
3234                 }
3235                 print "</td>\n" .
3236                       "<td class=\"link\">" .
3237                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3238                       " | " .
3239                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3240                 print "</td>\n" .
3241                       "</tr>\n";
3242         }
3243         if (defined $extra) {
3244                 print "<tr>\n" .
3245                       "<td colspan=\"3\">$extra</td>\n" .
3246                       "</tr>\n";
3247         }
3248         print "</table>\n";
3249 }
3250
3251 ## ======================================================================
3252 ## ======================================================================
3253 ## actions
3254
3255 sub git_project_list {
3256         my $order = $cgi->param('o');
3257         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3258                 die_error(undef, "Unknown order parameter");
3259         }
3260
3261         my @list = git_get_projects_list();
3262         if (!@list) {
3263                 die_error(undef, "No projects found");
3264         }
3265
3266         git_header_html();
3267         if (-f $home_text) {
3268                 print "<div class=\"index_include\">\n";
3269                 open (my $fd, $home_text);
3270                 print <$fd>;
3271                 close $fd;
3272                 print "</div>\n";
3273         }
3274         git_project_list_body(\@list, $order);
3275         git_footer_html();
3276 }
3277
3278 sub git_forks {
3279         my $order = $cgi->param('o');
3280         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3281                 die_error(undef, "Unknown order parameter");
3282         }
3283
3284         my @list = git_get_projects_list($project);
3285         if (!@list) {
3286                 die_error(undef, "No forks found");
3287         }
3288
3289         git_header_html();
3290         git_print_page_nav('','');
3291         git_print_header_div('summary', "$project forks");
3292         git_project_list_body(\@list, $order);
3293         git_footer_html();
3294 }
3295
3296 sub git_project_index {
3297         my @projects = git_get_projects_list($project);
3298
3299         print $cgi->header(
3300                 -type => 'text/plain',
3301                 -charset => 'utf-8',
3302                 -content_disposition => 'inline; filename="index.aux"');
3303
3304         foreach my $pr (@projects) {
3305                 if (!exists $pr->{'owner'}) {
3306                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3307                 }
3308
3309                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3310                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3311                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3312                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3313                 $path  =~ s/ /\+/g;
3314                 $owner =~ s/ /\+/g;
3315
3316                 print "$path $owner\n";
3317         }
3318 }
3319
3320 sub git_summary {
3321         my $descr = git_get_project_description($project) || "none";
3322         my %co = parse_commit("HEAD");
3323         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3324         my $head = $co{'id'};
3325
3326         my $owner = git_get_project_owner($project);
3327
3328         my $refs = git_get_references();
3329         # These get_*_list functions return one more to allow us to see if
3330         # there are more ...
3331         my @taglist  = git_get_tags_list(16);
3332         my @headlist = git_get_heads_list(16);
3333         my @forklist;
3334         my ($check_forks) = gitweb_check_feature('forks');
3335
3336         if ($check_forks) {
3337                 @forklist = git_get_projects_list($project);
3338         }
3339
3340         git_header_html();
3341         git_print_page_nav('summary','', $head);
3342
3343         print "<div class=\"title\">&nbsp;</div>\n";
3344         print "<table cellspacing=\"0\">\n" .
3345               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3346               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3347               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3348         # use per project git URL list in $projectroot/$project/cloneurl
3349         # or make project git URL from git base URL and project name
3350         my $url_tag = "URL";
3351         my @url_list = git_get_project_url_list($project);
3352         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3353         foreach my $git_url (@url_list) {
3354                 next unless $git_url;
3355                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3356                 $url_tag = "";
3357         }
3358         print "</table>\n";
3359
3360         if (-s "$projectroot/$project/README.html") {
3361                 if (open my $fd, "$projectroot/$project/README.html") {
3362                         print "<div class=\"title\">readme</div>\n";
3363                         print $_ while (<$fd>);
3364                         close $fd;
3365                 }
3366         }
3367
3368         # we need to request one more than 16 (0..15) to check if
3369         # those 16 are all
3370         my @commitlist = parse_commits($head, 17);
3371         git_print_header_div('shortlog');
3372         git_shortlog_body(\@commitlist, 0, 15, $refs,
3373                           $#commitlist <=  15 ? undef :
3374                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3375
3376         if (@taglist) {
3377                 git_print_header_div('tags');
3378                 git_tags_body(\@taglist, 0, 15,
3379                               $#taglist <=  15 ? undef :
3380                               $cgi->a({-href => href(action=>"tags")}, "..."));
3381         }
3382
3383         if (@headlist) {
3384                 git_print_header_div('heads');
3385                 git_heads_body(\@headlist, $head, 0, 15,
3386                                $#headlist <= 15 ? undef :
3387                                $cgi->a({-href => href(action=>"heads")}, "..."));
3388         }
3389
3390         if (@forklist) {
3391                 git_print_header_div('forks');
3392                 git_project_list_body(\@forklist, undef, 0, 15,
3393                                       $#forklist <= 15 ? undef :
3394                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3395                                       'noheader');
3396         }
3397
3398         git_footer_html();
3399 }
3400
3401 sub git_tag {
3402         my $head = git_get_head_hash($project);
3403         git_header_html();
3404         git_print_page_nav('','', $head,undef,$head);
3405         my %tag = parse_tag($hash);
3406         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3407         print "<div class=\"title_text\">\n" .
3408               "<table cellspacing=\"0\">\n" .
3409               "<tr>\n" .
3410               "<td>object</td>\n" .
3411               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3412                                $tag{'object'}) . "</td>\n" .
3413               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3414                                               $tag{'type'}) . "</td>\n" .
3415               "</tr>\n";
3416         if (defined($tag{'author'})) {
3417                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3418                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3419                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3420                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3421                         "</td></tr>\n";
3422         }
3423         print "</table>\n\n" .
3424               "</div>\n";
3425         print "<div class=\"page_body\">";
3426         my $comment = $tag{'comment'};
3427         foreach my $line (@$comment) {
3428                 chomp $line;
3429                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3430         }
3431         print "</div>\n";
3432         git_footer_html();
3433 }
3434
3435 sub git_blame2 {
3436         my $fd;
3437         my $ftype;
3438
3439         my ($have_blame) = gitweb_check_feature('blame');
3440         if (!$have_blame) {
3441                 die_error('403 Permission denied', "Permission denied");
3442         }
3443         die_error('404 Not Found', "File name not defined") if (!$file_name);
3444         $hash_base ||= git_get_head_hash($project);
3445         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3446         my %co = parse_commit($hash_base)
3447                 or die_error(undef, "Reading commit failed");
3448         if (!defined $hash) {
3449                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3450                         or die_error(undef, "Error looking up file");
3451         }
3452         $ftype = git_get_type($hash);
3453         if ($ftype !~ "blob") {
3454                 die_error('400 Bad Request', "Object is not a blob");
3455         }
3456         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3457               $file_name, $hash_base)
3458                 or die_error(undef, "Open git-blame failed");
3459         git_header_html();
3460         my $formats_nav =
3461                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3462                         "blob") .
3463                 " | " .
3464                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3465                         "history") .
3466                 " | " .
3467                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3468                         "HEAD");
3469         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3470         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3471         git_print_page_path($file_name, $ftype, $hash_base);
3472         my @rev_color = (qw(light2 dark2));
3473         my $num_colors = scalar(@rev_color);
3474         my $current_color = 0;
3475         my $last_rev;
3476         print <<HTML;
3477 <div class="page_body">
3478 <table class="blame">
3479 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3480 HTML
3481         my %metainfo = ();
3482         while (1) {
3483                 $_ = <$fd>;
3484                 last unless defined $_;
3485                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3486                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3487                 if (!exists $metainfo{$full_rev}) {
3488                         $metainfo{$full_rev} = {};
3489                 }
3490                 my $meta = $metainfo{$full_rev};
3491                 while (<$fd>) {
3492                         last if (s/^\t//);
3493                         if (/^(\S+) (.*)$/) {
3494                                 $meta->{$1} = $2;
3495                         }
3496                 }
3497                 my $data = $_;
3498                 chomp $data;
3499                 my $rev = substr($full_rev, 0, 8);
3500                 my $author = $meta->{'author'};
3501                 my %date = parse_date($meta->{'author-time'},
3502                                       $meta->{'author-tz'});
3503                 my $date = $date{'iso-tz'};
3504                 if ($group_size) {
3505                         $current_color = ++$current_color % $num_colors;
3506                 }
3507                 print "<tr class=\"$rev_color[$current_color]\">\n";
3508                 if ($group_size) {
3509                         print "<td class=\"sha1\"";
3510                         print " title=\"". esc_html($author) . ", $date\"";
3511                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3512                         print ">";
3513                         print $cgi->a({-href => href(action=>"commit",
3514                                                      hash=>$full_rev,
3515                                                      file_name=>$file_name)},
3516                                       esc_html($rev));
3517                         print "</td>\n";
3518                 }
3519                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3520                         or die_error(undef, "Open git-rev-parse failed");
3521                 my $parent_commit = <$dd>;
3522                 close $dd;
3523                 chomp($parent_commit);
3524                 my $blamed = href(action => 'blame',
3525                                   file_name => $meta->{'filename'},
3526                                   hash_base => $parent_commit);
3527                 print "<td class=\"linenr\">";
3528                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3529                                 -id => "l$lineno",
3530                                 -class => "linenr" },
3531                               esc_html($lineno));
3532                 print "</td>";
3533                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3534                 print "</tr>\n";
3535         }
3536         print "</table>\n";
3537         print "</div>";
3538         close $fd
3539                 or print "Reading blob failed\n";
3540         git_footer_html();
3541 }
3542
3543 sub git_blame {
3544         my $fd;
3545
3546         my ($have_blame) = gitweb_check_feature('blame');
3547         if (!$have_blame) {
3548                 die_error('403 Permission denied', "Permission denied");
3549         }
3550         die_error('404 Not Found', "File name not defined") if (!$file_name);
3551         $hash_base ||= git_get_head_hash($project);
3552         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3553         my %co = parse_commit($hash_base)
3554                 or die_error(undef, "Reading commit failed");
3555         if (!defined $hash) {
3556                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3557                         or die_error(undef, "Error lookup file");
3558         }
3559         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3560                 or die_error(undef, "Open git-annotate failed");
3561         git_header_html();
3562         my $formats_nav =
3563                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3564                         "blob") .
3565                 " | " .
3566                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3567                         "history") .
3568                 " | " .
3569                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3570                         "HEAD");
3571         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3572         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3573         git_print_page_path($file_name, 'blob', $hash_base);
3574         print "<div class=\"page_body\">\n";
3575         print <<HTML;
3576 <table class="blame">
3577   <tr>
3578     <th>Commit</th>
3579     <th>Age</th>
3580     <th>Author</th>
3581     <th>Line</th>
3582     <th>Data</th>
3583   </tr>
3584 HTML
3585         my @line_class = (qw(light dark));
3586         my $line_class_len = scalar (@line_class);
3587         my $line_class_num = $#line_class;
3588         while (my $line = <$fd>) {
3589                 my $long_rev;
3590                 my $short_rev;
3591                 my $author;
3592                 my $time;
3593                 my $lineno;
3594                 my $data;
3595                 my $age;
3596                 my $age_str;
3597                 my $age_class;
3598
3599                 chomp $line;
3600                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3601
3602                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3603                         $long_rev = $1;
3604                         $author   = $2;
3605                         $time     = $3;
3606                         $lineno   = $4;
3607                         $data     = $5;
3608                 } else {
3609                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3610                         next;
3611                 }
3612                 $short_rev  = substr ($long_rev, 0, 8);
3613                 $age        = time () - $time;
3614                 $age_str    = age_string ($age);
3615                 $age_str    =~ s/ /&nbsp;/g;
3616                 $age_class  = age_class($age);
3617                 $author     = esc_html ($author);
3618                 $author     =~ s/ /&nbsp;/g;
3619
3620                 $data = untabify($data);
3621                 $data = esc_html ($data);
3622
3623                 print <<HTML;
3624   <tr class="$line_class[$line_class_num]">
3625     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3626     <td class="$age_class">$age_str</td>
3627     <td>$author</td>
3628     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3629     <td class="pre">$data</td>
3630   </tr>
3631 HTML
3632         } # while (my $line = <$fd>)
3633         print "</table>\n\n";
3634         close $fd
3635                 or print "Reading blob failed.\n";
3636         print "</div>";
3637         git_footer_html();
3638 }
3639
3640 sub git_tags {
3641         my $head = git_get_head_hash($project);
3642         git_header_html();
3643         git_print_page_nav('','', $head,undef,$head);
3644         git_print_header_div('summary', $project);
3645
3646         my @tagslist = git_get_tags_list();
3647         if (@tagslist) {
3648                 git_tags_body(\@tagslist);
3649         }
3650         git_footer_html();
3651 }
3652
3653 sub git_heads {
3654         my $head = git_get_head_hash($project);
3655         git_header_html();
3656         git_print_page_nav('','', $head,undef,$head);
3657         git_print_header_div('summary', $project);
3658
3659         my @headslist = git_get_heads_list();
3660         if (@headslist) {
3661                 git_heads_body(\@headslist, $head);
3662         }
3663         git_footer_html();
3664 }
3665
3666 sub git_blob_plain {
3667         my $expires;
3668
3669         if (!defined $hash) {
3670                 if (defined $file_name) {
3671                         my $base = $hash_base || git_get_head_hash($project);
3672                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3673                                 or die_error(undef, "Error lookup file");
3674                 } else {
3675                         die_error(undef, "No file name defined");
3676                 }
3677         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3678                 # blobs defined by non-textual hash id's can be cached
3679                 $expires = "+1d";
3680         }
3681
3682         my $type = shift;
3683         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3684                 or die_error(undef, "Couldn't cat $file_name, $hash");
3685
3686         $type ||= blob_mimetype($fd, $file_name);
3687
3688         # save as filename, even when no $file_name is given
3689         my $save_as = "$hash";
3690         if (defined $file_name) {
3691                 $save_as = $file_name;
3692         } elsif ($type =~ m/^text\//) {
3693                 $save_as .= '.txt';
3694         }
3695
3696         print $cgi->header(
3697                 -type => "$type",
3698                 -expires=>$expires,
3699                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3700         undef $/;
3701         binmode STDOUT, ':raw';
3702         print <$fd>;
3703         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3704         $/ = "\n";
3705         close $fd;
3706 }
3707
3708 sub git_blob {
3709         my $expires;
3710
3711         if (!defined $hash) {
3712                 if (defined $file_name) {
3713                         my $base = $hash_base || git_get_head_hash($project);
3714                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3715                                 or die_error(undef, "Error lookup file");
3716                 } else {
3717                         die_error(undef, "No file name defined");
3718                 }
3719         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3720                 # blobs defined by non-textual hash id's can be cached
3721                 $expires = "+1d";
3722         }
3723
3724         my ($have_blame) = gitweb_check_feature('blame');
3725         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3726                 or die_error(undef, "Couldn't cat $file_name, $hash");
3727         my $mimetype = blob_mimetype($fd, $file_name);
3728         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3729                 close $fd;
3730                 return git_blob_plain($mimetype);
3731         }
3732         # we can have blame only for text/* mimetype
3733         $have_blame &&= ($mimetype =~ m!^text/!);
3734
3735         git_header_html(undef, $expires);
3736         my $formats_nav = '';
3737         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3738                 if (defined $file_name) {
3739                         if ($have_blame) {
3740                                 $formats_nav .=
3741                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3742                                                                hash=>$hash, file_name=>$file_name)},
3743                                                 "blame") .
3744                                         " | ";
3745                         }
3746                         $formats_nav .=
3747                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3748                                                        hash=>$hash, file_name=>$file_name)},
3749                                         "history") .
3750                                 " | " .
3751                                 $cgi->a({-href => href(action=>"blob_plain",
3752                                                        hash=>$hash, file_name=>$file_name)},
3753                                         "raw") .
3754                                 " | " .
3755                                 $cgi->a({-href => href(action=>"blob",
3756                                                        hash_base=>"HEAD", file_name=>$file_name)},
3757                                         "HEAD");
3758                 } else {
3759                         $formats_nav .=
3760                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3761                 }
3762                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3763                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3764         } else {
3765                 print "<div class=\"page_nav\">\n" .
3766                       "<br/><br/></div>\n" .
3767                       "<div class=\"title\">$hash</div>\n";
3768         }
3769         git_print_page_path($file_name, "blob", $hash_base);
3770         print "<div class=\"page_body\">\n";
3771         if ($mimetype =~ m!^text/!) {
3772                 my $nr;
3773                 while (my $line = <$fd>) {
3774                         chomp $line;
3775                         $nr++;
3776                         $line = untabify($line);
3777                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3778                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3779                 }
3780         } elsif ($mimetype =~ m!^image/!) {
3781                 print qq!<img type="$mimetype"!;
3782                 if ($file_name) {
3783                         print qq! alt="$file_name" title="$file_name"!;
3784                 }
3785                 print qq! src="! .
3786                       href(action=>"blob_plain", hash=>$hash,
3787                            hash_base=>$hash_base, file_name=>$file_name) .
3788                       qq!" />\n!;
3789         }
3790         close $fd
3791                 or print "Reading blob failed.\n";
3792         print "</div>";
3793         git_footer_html();
3794 }
3795
3796 sub git_tree {
3797         my $have_snapshot = gitweb_have_snapshot();
3798
3799         if (!defined $hash_base) {
3800                 $hash_base = "HEAD";
3801         }
3802         if (!defined $hash) {
3803                 if (defined $file_name) {
3804                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3805                 } else {
3806                         $hash = $hash_base;
3807                 }
3808         }
3809         $/ = "\0";
3810         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3811                 or die_error(undef, "Open git-ls-tree failed");
3812         my @entries = map { chomp; $_ } <$fd>;
3813         close $fd or die_error(undef, "Reading tree failed");
3814         $/ = "\n";
3815
3816         my $refs = git_get_references();
3817         my $ref = format_ref_marker($refs, $hash_base);
3818         git_header_html();
3819         my $basedir = '';
3820         my ($have_blame) = gitweb_check_feature('blame');
3821         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3822                 my @views_nav = ();
3823                 if (defined $file_name) {
3824                         push @views_nav,
3825                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3826                                                        hash=>$hash, file_name=>$file_name)},
3827                                         "history"),
3828                                 $cgi->a({-href => href(action=>"tree",
3829                                                        hash_base=>"HEAD", file_name=>$file_name)},
3830                                         "HEAD"),
3831                 }
3832                 if ($have_snapshot) {
3833                         # FIXME: Should be available when we have no hash base as well.
3834                         push @views_nav,
3835                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3836                                         "snapshot");
3837                 }
3838                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3839                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3840         } else {
3841                 undef $hash_base;
3842                 print "<div class=\"page_nav\">\n";
3843                 print "<br/><br/></div>\n";
3844                 print "<div class=\"title\">$hash</div>\n";
3845         }
3846         if (defined $file_name) {
3847                 $basedir = $file_name;
3848                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3849                         $basedir .= '/';
3850                 }
3851         }
3852         git_print_page_path($file_name, 'tree', $hash_base);
3853         print "<div class=\"page_body\">\n";
3854         print "<table cellspacing=\"0\">\n";
3855         my $alternate = 1;
3856         # '..' (top directory) link if possible
3857         if (defined $hash_base &&
3858             defined $file_name && $file_name =~ m![^/]+$!) {
3859                 if ($alternate) {
3860                         print "<tr class=\"dark\">\n";
3861                 } else {
3862                         print "<tr class=\"light\">\n";
3863                 }
3864                 $alternate ^= 1;
3865
3866                 my $up = $file_name;
3867                 $up =~ s!/?[^/]+$!!;
3868                 undef $up unless $up;
3869                 # based on git_print_tree_entry
3870                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3871                 print '<td class="list">';
3872                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3873                                              file_name=>$up)},
3874                               "..");
3875                 print "</td>\n";
3876                 print "<td class=\"link\"></td>\n";
3877
3878                 print "</tr>\n";
3879         }
3880         foreach my $line (@entries) {
3881                 my %t = parse_ls_tree_line($line, -z => 1);
3882
3883                 if ($alternate) {
3884                         print "<tr class=\"dark\">\n";
3885                 } else {
3886                         print "<tr class=\"light\">\n";
3887                 }
3888                 $alternate ^= 1;
3889
3890                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3891
3892                 print "</tr>\n";
3893         }
3894         print "</table>\n" .
3895               "</div>";
3896         git_footer_html();
3897 }
3898
3899 sub git_snapshot {
3900         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3901         my $have_snapshot = (defined $ctype && defined $suffix);
3902         if (!$have_snapshot) {
3903                 die_error('403 Permission denied', "Permission denied");
3904         }
3905
3906         if (!defined $hash) {
3907                 $hash = git_get_head_hash($project);
3908         }
3909
3910         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3911
3912         print $cgi->header(
3913                 -type => "application/$ctype",
3914                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3915                 -status => '200 OK');
3916
3917         my $git = git_cmd_str();
3918         my $name = $project;
3919         $name =~ s/\047/\047\\\047\047/g;
3920         open my $fd, "-|",
3921                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3922                 or die_error(undef, "Execute git-tar-tree failed");
3923         binmode STDOUT, ':raw';
3924         print <$fd>;
3925         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3926         close $fd;
3927
3928 }
3929
3930 sub git_log {
3931         my $head = git_get_head_hash($project);
3932         if (!defined $hash) {
3933                 $hash = $head;
3934         }
3935         if (!defined $page) {
3936                 $page = 0;
3937         }
3938         my $refs = git_get_references();
3939
3940         my @commitlist = parse_commits($hash, 101, (100 * $page));
3941
3942         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3943
3944         git_header_html();
3945         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3946
3947         if (!@commitlist) {
3948                 my %co = parse_commit($hash);
3949
3950                 git_print_header_div('summary', $project);
3951                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3952         }
3953         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3954         for (my $i = 0; $i <= $to; $i++) {
3955                 my %co = %{$commitlist[$i]};
3956                 next if !%co;
3957                 my $commit = $co{'id'};
3958                 my $ref = format_ref_marker($refs, $commit);
3959                 my %ad = parse_date($co{'author_epoch'});
3960                 git_print_header_div('commit',
3961                                "<span class=\"age\">$co{'age_string'}</span>" .
3962                                esc_html($co{'title'}) . $ref,
3963                                $commit);
3964                 print "<div class=\"title_text\">\n" .
3965                       "<div class=\"log_link\">\n" .
3966                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3967                       " | " .
3968                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3969                       " | " .
3970                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3971                       "<br/>\n" .
3972                       "</div>\n" .
3973                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3974                       "</div>\n";
3975
3976                 print "<div class=\"log_body\">\n";
3977                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3978                 print "</div>\n";
3979         }
3980         if ($#commitlist >= 100) {
3981                 print "<div class=\"page_nav\">\n";
3982                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3983                                -accesskey => "n", -title => "Alt-n"}, "next");
3984                 print "</div>\n";
3985         }
3986         git_footer_html();
3987 }
3988
3989 sub git_commit {
3990         $hash ||= $hash_base || "HEAD";
3991         my %co = parse_commit($hash);
3992         if (!%co) {
3993                 die_error(undef, "Unknown commit object");
3994         }
3995         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3996         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3997
3998         my $parent  = $co{'parent'};
3999         my $parents = $co{'parents'}; # listref
4000
4001         # we need to prepare $formats_nav before any parameter munging
4002         my $formats_nav;
4003         if (!defined $parent) {
4004                 # --root commitdiff
4005                 $formats_nav .= '(initial)';
4006         } elsif (@$parents == 1) {
4007                 # single parent commit
4008                 $formats_nav .=
4009                         '(parent: ' .
4010                         $cgi->a({-href => href(action=>"commit",
4011                                                hash=>$parent)},
4012                                 esc_html(substr($parent, 0, 7))) .
4013                         ')';
4014         } else {
4015                 # merge commit
4016                 $formats_nav .=
4017                         '(merge: ' .
4018                         join(' ', map {
4019                                 $cgi->a({-href => href(action=>"commit",
4020                                                        hash=>$_)},
4021                                         esc_html(substr($_, 0, 7)));
4022                         } @$parents ) .
4023                         ')';
4024         }
4025
4026         if (!defined $parent) {
4027                 $parent = "--root";
4028         }
4029         my @difftree;
4030         if (@$parents <= 1) {
4031                 # difftree output is not printed for merges
4032                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4033                         @diff_opts, $parent, $hash, "--"
4034                         or die_error(undef, "Open git-diff-tree failed");
4035                 @difftree = map { chomp; $_ } <$fd>;
4036                 close $fd or die_error(undef, "Reading git-diff-tree failed");
4037         }
4038
4039         # non-textual hash id's can be cached
4040         my $expires;
4041         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4042                 $expires = "+1d";
4043         }
4044         my $refs = git_get_references();
4045         my $ref = format_ref_marker($refs, $co{'id'});
4046
4047         my $have_snapshot = gitweb_have_snapshot();
4048
4049         git_header_html(undef, $expires);
4050         git_print_page_nav('commit', '',
4051                            $hash, $co{'tree'}, $hash,
4052                            $formats_nav);
4053
4054         if (defined $co{'parent'}) {
4055                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4056         } else {
4057                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4058         }
4059         print "<div class=\"title_text\">\n" .
4060               "<table cellspacing=\"0\">\n";
4061         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4062               "<tr>" .
4063               "<td></td><td> $ad{'rfc2822'}";
4064         if ($ad{'hour_local'} < 6) {
4065                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4066                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4067         } else {
4068                 printf(" (%02d:%02d %s)",
4069                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4070         }
4071         print "</td>" .
4072               "</tr>\n";
4073         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4074         print "<tr><td></td><td> $cd{'rfc2822'}" .
4075               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4076               "</td></tr>\n";
4077         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4078         print "<tr>" .
4079               "<td>tree</td>" .
4080               "<td class=\"sha1\">" .
4081               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4082                        class => "list"}, $co{'tree'}) .
4083               "</td>" .
4084               "<td class=\"link\">" .
4085               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4086                       "tree");
4087         if ($have_snapshot) {
4088                 print " | " .
4089                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4090         }
4091         print "</td>" .
4092               "</tr>\n";
4093
4094         foreach my $par (@$parents) {
4095                 print "<tr>" .
4096                       "<td>parent</td>" .
4097                       "<td class=\"sha1\">" .
4098                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4099                                class => "list"}, $par) .
4100                       "</td>" .
4101                       "<td class=\"link\">" .
4102                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4103                       " | " .
4104                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4105                       "</td>" .
4106                       "</tr>\n";
4107         }
4108         print "</table>".
4109               "</div>\n";
4110
4111         print "<div class=\"page_body\">\n";
4112         git_print_log($co{'comment'});
4113         print "</div>\n";
4114
4115         if (@$parents <= 1) {
4116                 # do not output difftree/whatchanged for merges
4117                 git_difftree_body(\@difftree, $hash, $parent);
4118         }
4119
4120         git_footer_html();
4121 }
4122
4123 sub git_object {
4124         # object is defined by:
4125         # - hash or hash_base alone
4126         # - hash_base and file_name
4127         my $type;
4128
4129         # - hash or hash_base alone
4130         if ($hash || ($hash_base && !defined $file_name)) {
4131                 my $object_id = $hash || $hash_base;
4132
4133                 my $git_command = git_cmd_str();
4134                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4135                         or die_error('404 Not Found', "Object does not exist");
4136                 $type = <$fd>;
4137                 chomp $type;
4138                 close $fd
4139                         or die_error('404 Not Found', "Object does not exist");
4140
4141         # - hash_base and file_name
4142         } elsif ($hash_base && defined $file_name) {
4143                 $file_name =~ s,/+$,,;
4144
4145                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4146                         or die_error('404 Not Found', "Base object does not exist");
4147
4148                 # here errors should not hapen
4149                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4150                         or die_error(undef, "Open git-ls-tree failed");
4151                 my $line = <$fd>;
4152                 close $fd;
4153
4154                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4155                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4156                         die_error('404 Not Found', "File or directory for given base does not exist");
4157                 }
4158                 $type = $2;
4159                 $hash = $3;
4160         } else {
4161                 die_error('404 Not Found', "Not enough information to find object");
4162         }
4163
4164         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4165                                           hash=>$hash, hash_base=>$hash_base,
4166                                           file_name=>$file_name),
4167                              -status => '302 Found');
4168 }
4169
4170 sub git_blobdiff {
4171         my $format = shift || 'html';
4172
4173         my $fd;
4174         my @difftree;
4175         my %diffinfo;
4176         my $expires;
4177
4178         # preparing $fd and %diffinfo for git_patchset_body
4179         # new style URI
4180         if (defined $hash_base && defined $hash_parent_base) {
4181                 if (defined $file_name) {
4182                         # read raw output
4183                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4184                                 $hash_parent_base, $hash_base,
4185                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4186                                 or die_error(undef, "Open git-diff-tree failed");
4187                         @difftree = map { chomp; $_ } <$fd>;
4188                         close $fd
4189                                 or die_error(undef, "Reading git-diff-tree failed");
4190                         @difftree
4191                                 or die_error('404 Not Found', "Blob diff not found");
4192
4193                 } elsif (defined $hash &&
4194                          $hash =~ /[0-9a-fA-F]{40}/) {
4195                         # try to find filename from $hash
4196
4197                         # read filtered raw output
4198                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4199                                 $hash_parent_base, $hash_base, "--"
4200                                 or die_error(undef, "Open git-diff-tree failed");
4201                         @difftree =
4202                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4203                                 # $hash == to_id
4204                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4205                                 map { chomp; $_ } <$fd>;
4206                         close $fd
4207                                 or die_error(undef, "Reading git-diff-tree failed");
4208                         @difftree
4209                                 or die_error('404 Not Found', "Blob diff not found");
4210
4211                 } else {
4212                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4213                 }
4214
4215                 if (@difftree > 1) {
4216                         die_error('404 Not Found', "Ambiguous blob diff specification");
4217                 }
4218
4219                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4220                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4221                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4222
4223                 $hash_parent ||= $diffinfo{'from_id'};
4224                 $hash        ||= $diffinfo{'to_id'};
4225
4226                 # non-textual hash id's can be cached
4227                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4228                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4229                         $expires = '+1d';
4230                 }
4231
4232                 # open patch output
4233                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4234                         '-p', ($format eq 'html' ? "--full-index" : ()),
4235                         $hash_parent_base, $hash_base,
4236                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4237                         or die_error(undef, "Open git-diff-tree failed");
4238         }
4239
4240         # old/legacy style URI
4241         if (!%diffinfo && # if new style URI failed
4242             defined $hash && defined $hash_parent) {
4243                 # fake git-diff-tree raw output
4244                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4245                 $diffinfo{'from_id'} = $hash_parent;
4246                 $diffinfo{'to_id'}   = $hash;
4247                 if (defined $file_name) {
4248                         if (defined $file_parent) {
4249                                 $diffinfo{'status'} = '2';
4250                                 $diffinfo{'from_file'} = $file_parent;
4251                                 $diffinfo{'to_file'}   = $file_name;
4252                         } else { # assume not renamed
4253                                 $diffinfo{'status'} = '1';
4254                                 $diffinfo{'from_file'} = $file_name;
4255                                 $diffinfo{'to_file'}   = $file_name;
4256                         }
4257                 } else { # no filename given
4258                         $diffinfo{'status'} = '2';
4259                         $diffinfo{'from_file'} = $hash_parent;
4260                         $diffinfo{'to_file'}   = $hash;
4261                 }
4262
4263                 # non-textual hash id's can be cached
4264                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4265                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4266                         $expires = '+1d';
4267                 }
4268
4269                 # open patch output
4270                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4271                         '-p', ($format eq 'html' ? "--full-index" : ()),
4272                         $hash_parent, $hash, "--"
4273                         or die_error(undef, "Open git-diff failed");
4274         } else  {
4275                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4276                         unless %diffinfo;
4277         }
4278
4279         # header
4280         if ($format eq 'html') {
4281                 my $formats_nav =
4282                         $cgi->a({-href => href(action=>"blobdiff_plain",
4283                                                hash=>$hash, hash_parent=>$hash_parent,
4284                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4285                                                file_name=>$file_name, file_parent=>$file_parent)},
4286                                 "raw");
4287                 git_header_html(undef, $expires);
4288                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4289                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4290                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4291                 } else {
4292                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4293                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4294                 }
4295                 if (defined $file_name) {
4296                         git_print_page_path($file_name, "blob", $hash_base);
4297                 } else {
4298                         print "<div class=\"page_path\"></div>\n";
4299                 }
4300
4301         } elsif ($format eq 'plain') {
4302                 print $cgi->header(
4303                         -type => 'text/plain',
4304                         -charset => 'utf-8',
4305                         -expires => $expires,
4306                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4307
4308                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4309
4310         } else {
4311                 die_error(undef, "Unknown blobdiff format");
4312         }
4313
4314         # patch
4315         if ($format eq 'html') {
4316                 print "<div class=\"page_body\">\n";
4317
4318                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4319                 close $fd;
4320
4321                 print "</div>\n"; # class="page_body"
4322                 git_footer_html();
4323
4324         } else {
4325                 while (my $line = <$fd>) {
4326                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4327                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4328
4329                         print $line;
4330
4331                         last if $line =~ m!^\+\+\+!;
4332                 }
4333                 local $/ = undef;
4334                 print <$fd>;
4335                 close $fd;
4336         }
4337 }
4338
4339 sub git_blobdiff_plain {
4340         git_blobdiff('plain');
4341 }
4342
4343 sub git_commitdiff {
4344         my $format = shift || 'html';
4345         $hash ||= $hash_base || "HEAD";
4346         my %co = parse_commit($hash);
4347         if (!%co) {
4348                 die_error(undef, "Unknown commit object");
4349         }
4350
4351         # we need to prepare $formats_nav before any parameter munging
4352         my $formats_nav;
4353         if ($format eq 'html') {
4354                 $formats_nav =
4355                         $cgi->a({-href => href(action=>"commitdiff_plain",
4356                                                hash=>$hash, hash_parent=>$hash_parent)},
4357                                 "raw");
4358
4359                 if (defined $hash_parent) {
4360                         # commitdiff with two commits given
4361                         my $hash_parent_short = $hash_parent;
4362                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4363                                 $hash_parent_short = substr($hash_parent, 0, 7);
4364                         }
4365                         $formats_nav .=
4366                                 ' (from: ' .
4367                                 $cgi->a({-href => href(action=>"commitdiff",
4368                                                        hash=>$hash_parent)},
4369                                         esc_html($hash_parent_short)) .
4370                                 ')';
4371                 } elsif (!$co{'parent'}) {
4372                         # --root commitdiff
4373                         $formats_nav .= ' (initial)';
4374                 } elsif (scalar @{$co{'parents'}} == 1) {
4375                         # single parent commit
4376                         $formats_nav .=
4377                                 ' (parent: ' .
4378                                 $cgi->a({-href => href(action=>"commitdiff",
4379                                                        hash=>$co{'parent'})},
4380                                         esc_html(substr($co{'parent'}, 0, 7))) .
4381                                 ')';
4382                 } else {
4383                         # merge commit
4384                         $formats_nav .=
4385                                 ' (merge: ' .
4386                                 join(' ', map {
4387                                         $cgi->a({-href => href(action=>"commitdiff",
4388                                                                hash=>$_)},
4389                                                 esc_html(substr($_, 0, 7)));
4390                                 } @{$co{'parents'}} ) .
4391                                 ')';
4392                 }
4393         }
4394
4395         if (!defined $hash_parent) {
4396                 $hash_parent = $co{'parent'} || '--root';
4397         }
4398
4399         # read commitdiff
4400         my $fd;
4401         my @difftree;
4402         if ($format eq 'html') {
4403                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4404                         "--no-commit-id", "--patch-with-raw", "--full-index",
4405                         $hash_parent, $hash, "--"
4406                         or die_error(undef, "Open git-diff-tree failed");
4407
4408                 while (my $line = <$fd>) {
4409                         chomp $line;
4410                         # empty line ends raw part of diff-tree output
4411                         last unless $line;
4412                         push @difftree, scalar parse_difftree_raw_line($line);
4413                 }
4414
4415         } elsif ($format eq 'plain') {
4416                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4417                         '-p', $hash_parent, $hash, "--"
4418                         or die_error(undef, "Open git-diff-tree failed");
4419
4420         } else {
4421                 die_error(undef, "Unknown commitdiff format");
4422         }
4423
4424         # non-textual hash id's can be cached
4425         my $expires;
4426         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4427                 $expires = "+1d";
4428         }
4429
4430         # write commit message
4431         if ($format eq 'html') {
4432                 my $refs = git_get_references();
4433                 my $ref = format_ref_marker($refs, $co{'id'});
4434
4435                 git_header_html(undef, $expires);
4436                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4437                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4438                 git_print_authorship(\%co);
4439                 print "<div class=\"page_body\">\n";
4440                 if (@{$co{'comment'}} > 1) {
4441                         print "<div class=\"log\">\n";
4442                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4443                         print "</div>\n"; # class="log"
4444                 }
4445
4446         } elsif ($format eq 'plain') {
4447                 my $refs = git_get_references("tags");
4448                 my $tagname = git_get_rev_name_tags($hash);
4449                 my $filename = basename($project) . "-$hash.patch";
4450
4451                 print $cgi->header(
4452                         -type => 'text/plain',
4453                         -charset => 'utf-8',
4454                         -expires => $expires,
4455                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4456                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4457                 print <<TEXT;
4458 From: $co{'author'}
4459 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4460 Subject: $co{'title'}
4461 TEXT
4462                 print "X-Git-Tag: $tagname\n" if $tagname;
4463                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4464
4465                 foreach my $line (@{$co{'comment'}}) {
4466                         print "$line\n";
4467                 }
4468                 print "---\n\n";
4469         }
4470
4471         # write patch
4472         if ($format eq 'html') {
4473                 git_difftree_body(\@difftree, $hash, $hash_parent);
4474                 print "<br/>\n";
4475
4476                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4477                 close $fd;
4478                 print "</div>\n"; # class="page_body"
4479                 git_footer_html();
4480
4481         } elsif ($format eq 'plain') {
4482                 local $/ = undef;
4483                 print <$fd>;
4484                 close $fd
4485                         or print "Reading git-diff-tree failed\n";
4486         }
4487 }
4488
4489 sub git_commitdiff_plain {
4490         git_commitdiff('plain');
4491 }
4492
4493 sub git_history {
4494         if (!defined $hash_base) {
4495                 $hash_base = git_get_head_hash($project);
4496         }
4497         if (!defined $page) {
4498                 $page = 0;
4499         }
4500         my $ftype;
4501         my %co = parse_commit($hash_base);
4502         if (!%co) {
4503                 die_error(undef, "Unknown commit object");
4504         }
4505
4506         my $refs = git_get_references();
4507         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4508
4509         if (!defined $hash && defined $file_name) {
4510                 $hash = git_get_hash_by_path($hash_base, $file_name);
4511         }
4512         if (defined $hash) {
4513                 $ftype = git_get_type($hash);
4514         }
4515
4516         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4517
4518         my $paging_nav = '';
4519         if ($page > 0) {
4520                 $paging_nav .=
4521                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4522                                                file_name=>$file_name)},
4523                                 "first");
4524                 $paging_nav .= " &sdot; " .
4525                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4526                                                file_name=>$file_name, page=>$page-1),
4527                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4528         } else {
4529                 $paging_nav .= "first";
4530                 $paging_nav .= " &sdot; prev";
4531         }
4532         if ($#commitlist >= 100) {
4533                 $paging_nav .= " &sdot; " .
4534                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4535                                                file_name=>$file_name, page=>$page+1),
4536                                  -accesskey => "n", -title => "Alt-n"}, "next");
4537         } else {
4538                 $paging_nav .= " &sdot; next";
4539         }
4540         my $next_link = '';
4541         if ($#commitlist >= 100) {
4542                 $next_link =
4543                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4544                                                file_name=>$file_name, page=>$page+1),
4545                                  -accesskey => "n", -title => "Alt-n"}, "next");
4546         }
4547
4548         git_header_html();
4549         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4550         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4551         git_print_page_path($file_name, $ftype, $hash_base);
4552
4553         git_history_body(\@commitlist, 0, 99,
4554                          $refs, $hash_base, $ftype, $next_link);
4555
4556         git_footer_html();
4557 }
4558
4559 sub git_search {
4560         my ($have_search) = gitweb_check_feature('search');
4561         if (!$have_search) {
4562                 die_error('403 Permission denied', "Permission denied");
4563         }
4564         if (!defined $searchtext) {
4565                 die_error(undef, "Text field empty");
4566         }
4567         if (!defined $hash) {
4568                 $hash = git_get_head_hash($project);
4569         }
4570         my %co = parse_commit($hash);
4571         if (!%co) {
4572                 die_error(undef, "Unknown commit object");
4573         }
4574         if (!defined $page) {
4575                 $page = 0;
4576         }
4577
4578         $searchtype ||= 'commit';
4579         if ($searchtype eq 'pickaxe') {
4580                 # pickaxe may take all resources of your box and run for several minutes
4581                 # with every query - so decide by yourself how public you make this feature
4582                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4583                 if (!$have_pickaxe) {
4584                         die_error('403 Permission denied', "Permission denied");
4585                 }
4586         }
4587
4588         git_header_html();
4589
4590         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4591                 my $greptype;
4592                 if ($searchtype eq 'commit') {
4593                         $greptype = "--grep=";
4594                 } elsif ($searchtype eq 'author') {
4595                         $greptype = "--author=";
4596                 } elsif ($searchtype eq 'committer') {
4597                         $greptype = "--committer=";
4598                 }
4599                 $greptype .= $searchtext;
4600                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4601
4602                 my $paging_nav = '';
4603                 if ($page > 0) {
4604                         $paging_nav .=
4605                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4606                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4607                                         "first");
4608                         $paging_nav .= " &sdot; " .
4609                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4610                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4611                                                        page=>$page-1),
4612                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4613                 } else {
4614                         $paging_nav .= "first";
4615                         $paging_nav .= " &sdot; prev";
4616                 }
4617                 if ($#commitlist >= 100) {
4618                         $paging_nav .= " &sdot; " .
4619                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4620                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4621                                                        page=>$page+1),
4622                                          -accesskey => "n", -title => "Alt-n"}, "next");
4623                 } else {
4624                         $paging_nav .= " &sdot; next";
4625                 }
4626                 my $next_link = '';
4627                 if ($#commitlist >= 100) {
4628                         $next_link =
4629                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4630                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4631                                                        page=>$page+1),
4632                                          -accesskey => "n", -title => "Alt-n"}, "next");
4633                 }
4634
4635                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4636                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4637                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4638         }
4639
4640         if ($searchtype eq 'pickaxe') {
4641                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4642                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4643
4644                 print "<table cellspacing=\"0\">\n";
4645                 my $alternate = 1;
4646                 $/ = "\n";
4647                 my $git_command = git_cmd_str();
4648                 open my $fd, "-|", "$git_command rev-list $hash | " .
4649                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4650                 undef %co;
4651                 my @files;
4652                 while (my $line = <$fd>) {
4653                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4654                                 my %set;
4655                                 $set{'file'} = $6;
4656                                 $set{'from_id'} = $3;
4657                                 $set{'to_id'} = $4;
4658                                 $set{'id'} = $set{'to_id'};
4659                                 if ($set{'id'} =~ m/0{40}/) {
4660                                         $set{'id'} = $set{'from_id'};
4661                                 }
4662                                 if ($set{'id'} =~ m/0{40}/) {
4663                                         next;
4664                                 }
4665                                 push @files, \%set;
4666                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4667                                 if (%co) {
4668                                         if ($alternate) {
4669                                                 print "<tr class=\"dark\">\n";
4670                                         } else {
4671                                                 print "<tr class=\"light\">\n";
4672                                         }
4673                                         $alternate ^= 1;
4674                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4675                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4676                                               "<td>" .
4677                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4678                                                       -class => "list subject"},
4679                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4680                                         while (my $setref = shift @files) {
4681                                                 my %set = %$setref;
4682                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4683                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4684                                                               -class => "list"},
4685                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4686                                                       "<br/>\n";
4687                                         }
4688                                         print "</td>\n" .
4689                                               "<td class=\"link\">" .
4690                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4691                                               " | " .
4692                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4693                                         print "</td>\n" .
4694                                               "</tr>\n";
4695                                 }
4696                                 %co = parse_commit($1);
4697                         }
4698                 }
4699                 close $fd;
4700
4701                 print "</table>\n";
4702         }
4703         git_footer_html();
4704 }
4705
4706 sub git_search_help {
4707         git_header_html();
4708         git_print_page_nav('','', $hash,$hash,$hash);
4709         print <<EOT;
4710 <dl>
4711 <dt><b>commit</b></dt>
4712 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4713 <dt><b>author</b></dt>
4714 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4715 <dt><b>committer</b></dt>
4716 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4717 EOT
4718         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4719         if ($have_pickaxe) {
4720                 print <<EOT;
4721 <dt><b>pickaxe</b></dt>
4722 <dd>All commits that caused the string to appear or disappear from any file (changes that
4723 added, removed or "modified" the string) will be listed. This search can take a while and
4724 takes a lot of strain on the server, so please use it wisely.</dd>
4725 EOT
4726         }
4727         print "</dl>\n";
4728         git_footer_html();
4729 }
4730
4731 sub git_shortlog {
4732         my $head = git_get_head_hash($project);
4733         if (!defined $hash) {
4734                 $hash = $head;
4735         }
4736         if (!defined $page) {
4737                 $page = 0;
4738         }
4739         my $refs = git_get_references();
4740
4741         my @commitlist = parse_commits($hash, 101, (100 * $page));
4742
4743         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4744         my $next_link = '';
4745         if ($#commitlist >= 100) {
4746                 $next_link =
4747                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4748                                  -accesskey => "n", -title => "Alt-n"}, "next");
4749         }
4750
4751         git_header_html();
4752         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4753         git_print_header_div('summary', $project);
4754
4755         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4756
4757         git_footer_html();
4758 }
4759
4760 ## ......................................................................
4761 ## feeds (RSS, Atom; OPML)
4762
4763 sub git_feed {
4764         my $format = shift || 'atom';
4765         my ($have_blame) = gitweb_check_feature('blame');
4766
4767         # Atom: http://www.atomenabled.org/developers/syndication/
4768         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4769         if ($format ne 'rss' && $format ne 'atom') {
4770                 die_error(undef, "Unknown web feed format");
4771         }
4772
4773         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4774         my $head = $hash || 'HEAD';
4775         my @commitlist = parse_commits($head, 150);
4776
4777         my %latest_commit;
4778         my %latest_date;
4779         my $content_type = "application/$format+xml";
4780         if (defined $cgi->http('HTTP_ACCEPT') &&
4781                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4782                 # browser (feed reader) prefers text/xml
4783                 $content_type = 'text/xml';
4784         }
4785         if (defined($commitlist[0])) {
4786                 %latest_commit = %{$commitlist[0]};
4787                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4788                 print $cgi->header(
4789                         -type => $content_type,
4790                         -charset => 'utf-8',
4791                         -last_modified => $latest_date{'rfc2822'});
4792         } else {
4793                 print $cgi->header(
4794                         -type => $content_type,
4795                         -charset => 'utf-8');
4796         }
4797
4798         # Optimization: skip generating the body if client asks only
4799         # for Last-Modified date.
4800         return if ($cgi->request_method() eq 'HEAD');
4801
4802         # header variables
4803         my $title = "$site_name - $project/$action";
4804         my $feed_type = 'log';
4805         if (defined $hash) {
4806                 $title .= " - '$hash'";
4807                 $feed_type = 'branch log';
4808                 if (defined $file_name) {
4809                         $title .= " :: $file_name";
4810                         $feed_type = 'history';
4811                 }
4812         } elsif (defined $file_name) {
4813                 $title .= " - $file_name";
4814                 $feed_type = 'history';
4815         }
4816         $title .= " $feed_type";
4817         my $descr = git_get_project_description($project);
4818         if (defined $descr) {
4819                 $descr = esc_html($descr);
4820         } else {
4821                 $descr = "$project " .
4822                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4823                          " feed";
4824         }
4825         my $owner = git_get_project_owner($project);
4826         $owner = esc_html($owner);
4827
4828         #header
4829         my $alt_url;
4830         if (defined $file_name) {
4831                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4832         } elsif (defined $hash) {
4833                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4834         } else {
4835                 $alt_url = href(-full=>1, action=>"summary");
4836         }
4837         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4838         if ($format eq 'rss') {
4839                 print <<XML;
4840 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4841 <channel>
4842 XML
4843                 print "<title>$title</title>\n" .
4844                       "<link>$alt_url</link>\n" .
4845                       "<description>$descr</description>\n" .
4846                       "<language>en</language>\n";
4847         } elsif ($format eq 'atom') {
4848                 print <<XML;
4849 <feed xmlns="http://www.w3.org/2005/Atom">
4850 XML
4851                 print "<title>$title</title>\n" .
4852                       "<subtitle>$descr</subtitle>\n" .
4853                       '<link rel="alternate" type="text/html" href="' .
4854                       $alt_url . '" />' . "\n" .
4855                       '<link rel="self" type="' . $content_type . '" href="' .
4856                       $cgi->self_url() . '" />' . "\n" .
4857                       "<id>" . href(-full=>1) . "</id>\n" .
4858                       # use project owner for feed author
4859                       "<author><name>$owner</name></author>\n";
4860                 if (defined $favicon) {
4861                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4862                 }
4863                 if (defined $logo_url) {
4864                         # not twice as wide as tall: 72 x 27 pixels
4865                         print "<logo>" . esc_url($logo) . "</logo>\n";
4866                 }
4867                 if (! %latest_date) {
4868                         # dummy date to keep the feed valid until commits trickle in:
4869                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4870                 } else {
4871                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4872                 }
4873         }
4874
4875         # contents
4876         for (my $i = 0; $i <= $#commitlist; $i++) {
4877                 my %co = %{$commitlist[$i]};
4878                 my $commit = $co{'id'};
4879                 # we read 150, we always show 30 and the ones more recent than 48 hours
4880                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4881                         last;
4882                 }
4883                 my %cd = parse_date($co{'author_epoch'});
4884
4885                 # get list of changed files
4886                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4887                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4888                         or next;
4889                 my @difftree = map { chomp; $_ } <$fd>;
4890                 close $fd
4891                         or next;
4892
4893                 # print element (entry, item)
4894                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4895                 if ($format eq 'rss') {
4896                         print "<item>\n" .
4897                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4898                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4899                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4900                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4901                               "<link>$co_url</link>\n" .
4902                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4903                               "<content:encoded>" .
4904                               "<![CDATA[\n";
4905                 } elsif ($format eq 'atom') {
4906                         print "<entry>\n" .
4907                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4908                               "<updated>$cd{'iso-8601'}</updated>\n" .
4909                               "<author>\n" .
4910                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4911                         if ($co{'author_email'}) {
4912                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4913                         }
4914                         print "</author>\n" .
4915                               # use committer for contributor
4916                               "<contributor>\n" .
4917                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4918                         if ($co{'committer_email'}) {
4919                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4920                         }
4921                         print "</contributor>\n" .
4922                               "<published>$cd{'iso-8601'}</published>\n" .
4923                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4924                               "<id>$co_url</id>\n" .
4925                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4926                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4927                 }
4928                 my $comment = $co{'comment'};
4929                 print "<pre>\n";
4930                 foreach my $line (@$comment) {
4931                         $line = esc_html($line);
4932                         print "$line\n";
4933                 }
4934                 print "</pre><ul>\n";
4935                 foreach my $difftree_line (@difftree) {
4936                         my %difftree = parse_difftree_raw_line($difftree_line);
4937                         next if !$difftree{'from_id'};
4938
4939                         my $file = $difftree{'file'} || $difftree{'to_file'};
4940
4941                         print "<li>" .
4942                               "[" .
4943                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4944                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4945                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4946                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4947                                       -title => "diff"}, 'D');
4948                         if ($have_blame) {
4949                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4950                                                              file_name=>$file, hash_base=>$commit),
4951                                               -title => "blame"}, 'B');
4952                         }
4953                         # if this is not a feed of a file history
4954                         if (!defined $file_name || $file_name ne $file) {
4955                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4956                                                              file_name=>$file, hash=>$commit),
4957                                               -title => "history"}, 'H');
4958                         }
4959                         $file = esc_path($file);
4960                         print "] ".
4961                               "$file</li>\n";
4962                 }
4963                 if ($format eq 'rss') {
4964                         print "</ul>]]>\n" .
4965                               "</content:encoded>\n" .
4966                               "</item>\n";
4967                 } elsif ($format eq 'atom') {
4968                         print "</ul>\n</div>\n" .
4969                               "</content>\n" .
4970                               "</entry>\n";
4971                 }
4972         }
4973
4974         # end of feed
4975         if ($format eq 'rss') {
4976                 print "</channel>\n</rss>\n";
4977         }       elsif ($format eq 'atom') {
4978                 print "</feed>\n";
4979         }
4980 }
4981
4982 sub git_rss {
4983         git_feed('rss');
4984 }
4985
4986 sub git_atom {
4987         git_feed('atom');
4988 }
4989
4990 sub git_opml {
4991         my @list = git_get_projects_list();
4992
4993         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4994         print <<XML;
4995 <?xml version="1.0" encoding="utf-8"?>
4996 <opml version="1.0">
4997 <head>
4998   <title>$site_name OPML Export</title>
4999 </head>
5000 <body>
5001 <outline text="git RSS feeds">
5002 XML
5003
5004         foreach my $pr (@list) {
5005                 my %proj = %$pr;
5006                 my $head = git_get_head_hash($proj{'path'});
5007                 if (!defined $head) {
5008                         next;
5009                 }
5010                 $git_dir = "$projectroot/$proj{'path'}";
5011                 my %co = parse_commit($head);
5012                 if (!%co) {
5013                         next;
5014                 }
5015
5016                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5017                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5018                 my $html = "$my_url?p=$proj{'path'};a=summary";
5019                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5020         }
5021         print <<XML;
5022 </outline>
5023 </body>
5024 </opml>
5025 XML
5026 }