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         # if there is no 'sub' key (no feature-sub), then feature cannot be
 111         # overriden
 112         #
 113         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 114
 115         # Enable the 'blame' blob view, showing the last commit that modified
 116         # each line in the file. This can be very CPU-intensive.
 117
 118         # To enable system wide have in $GITWEB_CONFIG
 119         # $feature{'blame'}{'default'} = [1];
 120         # To have project specific config enable override in $GITWEB_CONFIG
 121         # $feature{'blame'}{'override'} = 1;
 122         # and in project config gitweb.blame = 0|1;
 123         'blame' => {
 124                 'sub' => \&feature_blame,
 125                 'override' => 0,
 126                 'default' => [0]},
 127
 128         # Enable the 'snapshot' link, providing a compressed tarball of any
 129         # tree. This can potentially generate high traffic if you have large
 130         # project.
 131
 132         # To disable system wide have in $GITWEB_CONFIG
 133         # $feature{'snapshot'}{'default'} = [undef];
 134         # To have project specific config enable override in $GITWEB_CONFIG
 135         # $feature{'snapshot'}{'override'} = 1;
 136         # and in project config gitweb.snapshot = none|gzip|bzip2;
 137         'snapshot' => {
 138                 'sub' => \&feature_snapshot,
 139                 'override' => 0,
 140                 #         => [content-encoding, suffix, program]
 141                 'default' => ['x-gzip', 'gz', 'gzip']},
 142
 143         # Enable text search, which will list the commits which match author,
 144         # committer or commit text to a given string.  Enabled by default.
 145         # Project specific override is not supported.
 146         'search' => {
 147                 'override' => 0,
 148                 'default' => [1]},
 149
 150         # Enable the pickaxe search, which will list the commits that modified
 151         # a given string in a file. This can be practical and quite faster
 152         # alternative to 'blame', but still potentially CPU-intensive.
 153
 154         # To enable system wide have in $GITWEB_CONFIG
 155         # $feature{'pickaxe'}{'default'} = [1];
 156         # To have project specific config enable override in $GITWEB_CONFIG
 157         # $feature{'pickaxe'}{'override'} = 1;
 158         # and in project config gitweb.pickaxe = 0|1;
 159         'pickaxe' => {
 160                 'sub' => \&feature_pickaxe,
 161                 'override' => 0,
 162                 'default' => [1]},
 163
 164         # Make gitweb use an alternative format of the URLs which can be
 165         # more readable and natural-looking: project name is embedded
 166         # directly in the path and the query string contains other
 167         # auxiliary information. All gitweb installations recognize
 168         # URL in either format; this configures in which formats gitweb
 169         # generates links.
 170
 171         # To enable system wide have in $GITWEB_CONFIG
 172         # $feature{'pathinfo'}{'default'} = [1];
 173         # Project specific override is not supported.
 174
 175         # Note that you will need to change the default location of CSS,
 176         # favicon, logo and possibly other files to an absolute URL. Also,
 177         # if gitweb.cgi serves as your indexfile, you will need to force
 178         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 179         'pathinfo' => {
 180                 'override' => 0,
 181                 'default' => [0]},
 182
 183         # Make gitweb consider projects in project root subdirectories
 184         # to be forks of existing projects. Given project $projname.git,
 185         # projects matching $projname/*.git will not be shown in the main
 186         # projects list, instead a '+' mark will be added to $projname
 187         # there and a 'forks' view will be enabled for the project, listing
 188         # all the forks. If project list is taken from a file, forks have
 189         # to be listed after the main project.
 190
 191         # To enable system wide have in $GITWEB_CONFIG
 192         # $feature{'forks'}{'default'} = [1];
 193         # Project specific override is not supported.
 194         'forks' => {
 195                 'override' => 0,
 196                 'default' => [0]},
 197 );
 198
 199 sub gitweb_check_feature {
 200         my ($name) = @_;
 201         return unless exists $feature{$name};
 202         my ($sub, $override, @defaults) = (
 203                 $feature{$name}{'sub'},
 204                 $feature{$name}{'override'},
 205                 @{$feature{$name}{'default'}});
 206         if (!$override) { return @defaults; }
 207         if (!defined $sub) {
 208                 warn "feature $name is not overrideable";
 209                 return @defaults;
 210         }
 211         return $sub->(@defaults);
 212 }
 213
 214 sub feature_blame {
 215         my ($val) = git_get_project_config('blame', '--bool');
 216
 217         if ($val eq 'true') {
 218                 return 1;
 219         } elsif ($val eq 'false') {
 220                 return 0;
 221         }
 222
 223         return $_[0];
 224 }
 225
 226 sub feature_snapshot {
 227         my ($ctype, $suffix, $command) = @_;
 228
 229         my ($val) = git_get_project_config('snapshot');
 230
 231         if ($val eq 'gzip') {
 232                 return ('x-gzip', 'gz', 'gzip');
 233         } elsif ($val eq 'bzip2') {
 234                 return ('x-bzip2', 'bz2', 'bzip2');
 235         } elsif ($val eq 'none') {
 236                 return ();
 237         }
 238
 239         return ($ctype, $suffix, $command);
 240 }
 241
 242 sub gitweb_have_snapshot {
 243         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 244         my $have_snapshot = (defined $ctype && defined $suffix);
 245
 246         return $have_snapshot;
 247 }
 248
 249 sub feature_pickaxe {
 250         my ($val) = git_get_project_config('pickaxe', '--bool');
 251
 252         if ($val eq 'true') {
 253                 return (1);
 254         } elsif ($val eq 'false') {
 255                 return (0);
 256         }
 257
 258         return ($_[0]);
 259 }
 260
 261 # checking HEAD file with -e is fragile if the repository was
 262 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 263 # and then pruned.
 264 sub check_head_link {
 265         my ($dir) = @_;
 266         my $headfile = "$dir/HEAD";
 267         return ((-e $headfile) ||
 268                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 269 }
 270
 271 sub check_export_ok {
 272         my ($dir) = @_;
 273         return (check_head_link($dir) &&
 274                 (!$export_ok || -e "$dir/$export_ok"));
 275 }
 276
 277 # rename detection options for git-diff and git-diff-tree
 278 # - default is '-M', with the cost proportional to
 279 #   (number of removed files) * (number of new files).
 280 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 281 #   (number of changed files + number of removed files) * (number of new files)
 282 # - even more costly is '-C', '--find-copies-harder' with cost
 283 #   (number of files in the original tree) * (number of new files)
 284 # - one might want to include '-B' option, e.g. '-B', '-M'
 285 our @diff_opts = ('-M'); # taken from git_commit
 286
 287 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 288 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 289
 290 # version of the core git binary
 291 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 292
 293 $projects_list ||= $projectroot;
 294
 295 # ======================================================================
 296 # input validation and dispatch
 297 our $action = $cgi->param('a');
 298 if (defined $action) {
 299         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 300                 die_error(undef, "Invalid action parameter");
 301         }
 302 }
 303
 304 # parameters which are pathnames
 305 our $project = $cgi->param('p');
 306 if (defined $project) {
 307         if (!validate_pathname($project) ||
 308             !(-d "$projectroot/$project") ||
 309             !check_head_link("$projectroot/$project") ||
 310             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 311             ($strict_export && !project_in_list($project))) {
 312                 undef $project;
 313                 die_error(undef, "No such project");
 314         }
 315 }
 316
 317 our $file_name = $cgi->param('f');
 318 if (defined $file_name) {
 319         if (!validate_pathname($file_name)) {
 320                 die_error(undef, "Invalid file parameter");
 321         }
 322 }
 323
 324 our $file_parent = $cgi->param('fp');
 325 if (defined $file_parent) {
 326         if (!validate_pathname($file_parent)) {
 327                 die_error(undef, "Invalid file parent parameter");
 328         }
 329 }
 330
 331 # parameters which are refnames
 332 our $hash = $cgi->param('h');
 333 if (defined $hash) {
 334         if (!validate_refname($hash)) {
 335                 die_error(undef, "Invalid hash parameter");
 336         }
 337 }
 338
 339 our $hash_parent = $cgi->param('hp');
 340 if (defined $hash_parent) {
 341         if (!validate_refname($hash_parent)) {
 342                 die_error(undef, "Invalid hash parent parameter");
 343         }
 344 }
 345
 346 our $hash_base = $cgi->param('hb');
 347 if (defined $hash_base) {
 348         if (!validate_refname($hash_base)) {
 349                 die_error(undef, "Invalid hash base parameter");
 350         }
 351 }
 352
 353 our $hash_parent_base = $cgi->param('hpb');
 354 if (defined $hash_parent_base) {
 355         if (!validate_refname($hash_parent_base)) {
 356                 die_error(undef, "Invalid hash parent base parameter");
 357         }
 358 }
 359
 360 # other parameters
 361 our $page = $cgi->param('pg');
 362 if (defined $page) {
 363         if ($page =~ m/[^0-9]/) {
 364                 die_error(undef, "Invalid page parameter");
 365         }
 366 }
 367
 368 our $searchtext = $cgi->param('s');
 369 our $search_regexp;
 370 if (defined $searchtext) {
 371         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 372                 die_error(undef, "Invalid search parameter");
 373         }
 374         if (length($searchtext) < 2) {
 375                 die_error(undef, "At least two characters are required for search parameter");
 376         }
 377         $search_regexp = quotemeta $searchtext;
 378 }
 379
 380 our $searchtype = $cgi->param('st');
 381 if (defined $searchtype) {
 382         if ($searchtype =~ m/[^a-z]/) {
 383                 die_error(undef, "Invalid searchtype parameter");
 384         }
 385 }
 386
 387 # now read PATH_INFO and use it as alternative to parameters
 388 sub evaluate_path_info {
 389         return if defined $project;
 390         my $path_info = $ENV{"PATH_INFO"};
 391         return if !$path_info;
 392         $path_info =~ s,^/+,,;
 393         return if !$path_info;
 394         # find which part of PATH_INFO is project
 395         $project = $path_info;
 396         $project =~ s,/+$,,;
 397         while ($project && !check_head_link("$projectroot/$project")) {
 398                 $project =~ s,/*[^/]*$,,;
 399         }
 400         # validate project
 401         $project = validate_pathname($project);
 402         if (!$project ||
 403             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 404             ($strict_export && !project_in_list($project))) {
 405                 undef $project;
 406                 return;
 407         }
 408         # do not change any parameters if an action is given using the query string
 409         return if $action;
 410         $path_info =~ s,^$project/*,,;
 411         my ($refname, $pathname) = split(/:/, $path_info, 2);
 412         if (defined $pathname) {
 413                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 414                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 415                 $pathname =~ s,^/+,,;
 416                 if (!$pathname || substr($pathname, -1) eq "/") {
 417                         $action  ||= "tree";
 418                         $pathname =~ s,/$,,;
 419                 } else {
 420                         $action  ||= "blob_plain";
 421                 }
 422                 $hash_base ||= validate_refname($refname);
 423                 $file_name ||= validate_pathname($pathname);
 424         } elsif (defined $refname) {
 425                 # we got "project.git/branch"
 426                 $action ||= "shortlog";
 427                 $hash   ||= validate_refname($refname);
 428         }
 429 }
 430 evaluate_path_info();
 431
 432 # path to the current git repository
 433 our $git_dir;
 434 $git_dir = "$projectroot/$project" if $project;
 435
 436 # dispatch
 437 my %actions = (
 438         "blame" => \&git_blame2,
 439         "blobdiff" => \&git_blobdiff,
 440         "blobdiff_plain" => \&git_blobdiff_plain,
 441         "blob" => \&git_blob,
 442         "blob_plain" => \&git_blob_plain,
 443         "commitdiff" => \&git_commitdiff,
 444         "commitdiff_plain" => \&git_commitdiff_plain,
 445         "commit" => \&git_commit,
 446         "forks" => \&git_forks,
 447         "heads" => \&git_heads,
 448         "history" => \&git_history,
 449         "log" => \&git_log,
 450         "rss" => \&git_rss,
 451         "atom" => \&git_atom,
 452         "search" => \&git_search,
 453         "search_help" => \&git_search_help,
 454         "shortlog" => \&git_shortlog,
 455         "summary" => \&git_summary,
 456         "tag" => \&git_tag,
 457         "tags" => \&git_tags,
 458         "tree" => \&git_tree,
 459         "snapshot" => \&git_snapshot,
 460         "object" => \&git_object,
 461         # those below don't need $project
 462         "opml" => \&git_opml,
 463         "project_list" => \&git_project_list,
 464         "project_index" => \&git_project_index,
 465 );
 466
 467 if (!defined $action) {
 468         if (defined $hash) {
 469                 $action = git_get_type($hash);
 470         } elsif (defined $hash_base && defined $file_name) {
 471                 $action = git_get_type("$hash_base:$file_name");
 472         } elsif (defined $project) {
 473                 $action = 'summary';
 474         } else {
 475                 $action = 'project_list';
 476         }
 477 }
 478 if (!defined($actions{$action})) {
 479         die_error(undef, "Unknown action");
 480 }
 481 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 482     !$project) {
 483         die_error(undef, "Project needed");
 484 }
 485 $actions{$action}->();
 486 exit;
 487
 488 ## ======================================================================
 489 ## action links
 490
 491 sub href(%) {
 492         my %params = @_;
 493         # default is to use -absolute url() i.e. $my_uri
 494         my $href = $params{-full} ? $my_url : $my_uri;
 495
 496         # XXX: Warning: If you touch this, check the search form for updating,
 497         # too.
 498
 499         my @mapping = (
 500                 project => "p",
 501                 action => "a",
 502                 file_name => "f",
 503                 file_parent => "fp",
 504                 hash => "h",
 505                 hash_parent => "hp",
 506                 hash_base => "hb",
 507                 hash_parent_base => "hpb",
 508                 page => "pg",
 509                 order => "o",
 510                 searchtext => "s",
 511                 searchtype => "st",
 512         );
 513         my %mapping = @mapping;
 514
 515         $params{'project'} = $project unless exists $params{'project'};
 516
 517         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 518         if ($use_pathinfo) {
 519                 # use PATH_INFO for project name
 520                 $href .= "/$params{'project'}" if defined $params{'project'};
 521                 delete $params{'project'};
 522
 523                 # Summary just uses the project path URL
 524                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 525                         delete $params{'action'};
 526                 }
 527         }
 528
 529         # now encode the parameters explicitly
 530         my @result = ();
 531         for (my $i = 0; $i < @mapping; $i += 2) {
 532                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 533                 if (defined $params{$name}) {
 534                         push @result, $symbol . "=" . esc_param($params{$name});
 535                 }
 536         }
 537         $href .= "?" . join(';', @result) if scalar @result;
 538
 539         return $href;
 540 }
 541
 542
 543 ## ======================================================================
 544 ## validation, quoting/unquoting and escaping
 545
 546 sub validate_pathname {
 547         my $input = shift || return undef;
 548
 549         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 550         # at the beginning, at the end, and between slashes.
 551         # also this catches doubled slashes
 552         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 553                 return undef;
 554         }
 555         # no null characters
 556         if ($input =~ m!\0!) {
 557                 return undef;
 558         }
 559         return $input;
 560 }
 561
 562 sub validate_refname {
 563         my $input = shift || return undef;
 564
 565         # textual hashes are O.K.
 566         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 567                 return $input;
 568         }
 569         # it must be correct pathname
 570         $input = validate_pathname($input)
 571                 or return undef;
 572         # restrictions on ref name according to git-check-ref-format
 573         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 574                 return undef;
 575         }
 576         return $input;
 577 }
 578
 579 # quote unsafe chars, but keep the slash, even when it's not
 580 # correct, but quoted slashes look too horrible in bookmarks
 581 sub esc_param {
 582         my $str = shift;
 583         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 584         $str =~ s/\+/%2B/g;
 585         $str =~ s/ /\+/g;
 586         return $str;
 587 }
 588
 589 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 590 sub esc_url {
 591         my $str = shift;
 592         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 593         $str =~ s/\+/%2B/g;
 594         $str =~ s/ /\+/g;
 595         return $str;
 596 }
 597
 598 # replace invalid utf8 character with SUBSTITUTION sequence
 599 sub esc_html ($;%) {
 600         my $str = shift;
 601         my %opts = @_;
 602
 603         $str = decode_utf8($str);
 604         $str = $cgi->escapeHTML($str);
 605         if ($opts{'-nbsp'}) {
 606                 $str =~ s/ /&nbsp;/g;
 607         }
 608         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 609         return $str;
 610 }
 611
 612 # quote control characters and escape filename to HTML
 613 sub esc_path {
 614         my $str = shift;
 615         my %opts = @_;
 616
 617         $str = decode_utf8($str);
 618         $str = $cgi->escapeHTML($str);
 619         if ($opts{'-nbsp'}) {
 620                 $str =~ s/ /&nbsp;/g;
 621         }
 622         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 623         return $str;
 624 }
 625
 626 # Make control characters "printable", using character escape codes (CEC)
 627 sub quot_cec {
 628         my $cntrl = shift;
 629         my %es = ( # character escape codes, aka escape sequences
 630                    "\t" => '\t',   # tab            (HT)
 631                    "\n" => '\n',   # line feed      (LF)
 632                    "\r" => '\r',   # carrige return (CR)
 633                    "\f" => '\f',   # form feed      (FF)
 634                    "\b" => '\b',   # backspace      (BS)
 635                    "\a" => '\a',   # alarm (bell)   (BEL)
 636                    "\e" => '\e',   # escape         (ESC)
 637                    "\013" => '\v', # vertical tab   (VT)
 638                    "\000" => '\0', # nul character  (NUL)
 639                    );
 640         my $chr = ( (exists $es{$cntrl})
 641                     ? $es{$cntrl}
 642                     : sprintf('\%03o', ord($cntrl)) );
 643         return "<span class=\"cntrl\">$chr</span>";
 644 }
 645
 646 # Alternatively use unicode control pictures codepoints,
 647 # Unicode "printable representation" (PR)
 648 sub quot_upr {
 649         my $cntrl = shift;
 650         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 651         return "<span class=\"cntrl\">$chr</span>";
 652 }
 653
 654 # git may return quoted and escaped filenames
 655 sub unquote {
 656         my $str = shift;
 657
 658         sub unq {
 659                 my $seq = shift;
 660                 my %es = ( # character escape codes, aka escape sequences
 661                         't' => "\t",   # tab            (HT, TAB)
 662                         'n' => "\n",   # newline        (NL)
 663                         'r' => "\r",   # return         (CR)
 664                         'f' => "\f",   # form feed      (FF)
 665                         'b' => "\b",   # backspace      (BS)
 666                         'a' => "\a",   # alarm (bell)   (BEL)
 667                         'e' => "\e",   # escape         (ESC)
 668                         'v' => "\013", # vertical tab   (VT)
 669                 );
 670
 671                 if ($seq =~ m/^[0-7]{1,3}$/) {
 672                         # octal char sequence
 673                         return chr(oct($seq));
 674                 } elsif (exists $es{$seq}) {
 675                         # C escape sequence, aka character escape code
 676                         return $es{$seq}
 677                 }
 678                 # quoted ordinary character
 679                 return $seq;
 680         }
 681
 682         if ($str =~ m/^"(.*)"$/) {
 683                 # needs unquoting
 684                 $str = $1;
 685                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 686         }
 687         return $str;
 688 }
 689
 690 # escape tabs (convert tabs to spaces)
 691 sub untabify {
 692         my $line = shift;
 693
 694         while ((my $pos = index($line, "\t")) != -1) {
 695                 if (my $count = (8 - ($pos % 8))) {
 696                         my $spaces = ' ' x $count;
 697                         $line =~ s/\t/$spaces/;
 698                 }
 699         }
 700
 701         return $line;
 702 }
 703
 704 sub project_in_list {
 705         my $project = shift;
 706         my @list = git_get_projects_list();
 707         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 708 }
 709
 710 ## ----------------------------------------------------------------------
 711 ## HTML aware string manipulation
 712
 713 sub chop_str {
 714         my $str = shift;
 715         my $len = shift;
 716         my $add_len = shift || 10;
 717
 718         # allow only $len chars, but don't cut a word if it would fit in $add_len
 719         # if it doesn't fit, cut it if it's still longer than the dots we would add
 720         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 721         my $body = $1;
 722         my $tail = $2;
 723         if (length($tail) > 4) {
 724                 $tail = " ...";
 725                 $body =~ s/&[^;]*$//; # remove chopped character entities
 726         }
 727         return "$body$tail";
 728 }
 729
 730 ## ----------------------------------------------------------------------
 731 ## functions returning short strings
 732
 733 # CSS class for given age value (in seconds)
 734 sub age_class {
 735         my $age = shift;
 736
 737         if (!defined $age) {
 738                 return "noage";
 739         } elsif ($age < 60*60*2) {
 740                 return "age0";
 741         } elsif ($age < 60*60*24*2) {
 742                 return "age1";
 743         } else {
 744                 return "age2";
 745         }
 746 }
 747
 748 # convert age in seconds to "nn units ago" string
 749 sub age_string {
 750         my $age = shift;
 751         my $age_str;
 752
 753         if ($age > 60*60*24*365*2) {
 754                 $age_str = (int $age/60/60/24/365);
 755                 $age_str .= " years ago";
 756         } elsif ($age > 60*60*24*(365/12)*2) {
 757                 $age_str = int $age/60/60/24/(365/12);
 758                 $age_str .= " months ago";
 759         } elsif ($age > 60*60*24*7*2) {
 760                 $age_str = int $age/60/60/24/7;
 761                 $age_str .= " weeks ago";
 762         } elsif ($age > 60*60*24*2) {
 763                 $age_str = int $age/60/60/24;
 764                 $age_str .= " days ago";
 765         } elsif ($age > 60*60*2) {
 766                 $age_str = int $age/60/60;
 767                 $age_str .= " hours ago";
 768         } elsif ($age > 60*2) {
 769                 $age_str = int $age/60;
 770                 $age_str .= " min ago";
 771         } elsif ($age > 2) {
 772                 $age_str = int $age;
 773                 $age_str .= " sec ago";
 774         } else {
 775                 $age_str .= " right now";
 776         }
 777         return $age_str;
 778 }
 779
 780 # convert file mode in octal to symbolic file mode string
 781 sub mode_str {
 782         my $mode = oct shift;
 783
 784         if (S_ISDIR($mode & S_IFMT)) {
 785                 return 'drwxr-xr-x';
 786         } elsif (S_ISLNK($mode)) {
 787                 return 'lrwxrwxrwx';
 788         } elsif (S_ISREG($mode)) {
 789                 # git cares only about the executable bit
 790                 if ($mode & S_IXUSR) {
 791                         return '-rwxr-xr-x';
 792                 } else {
 793                         return '-rw-r--r--';
 794                 };
 795         } else {
 796                 return '----------';
 797         }
 798 }
 799
 800 # convert file mode in octal to file type string
 801 sub file_type {
 802         my $mode = shift;
 803
 804         if ($mode !~ m/^[0-7]+$/) {
 805                 return $mode;
 806         } else {
 807                 $mode = oct $mode;
 808         }
 809
 810         if (S_ISDIR($mode & S_IFMT)) {
 811                 return "directory";
 812         } elsif (S_ISLNK($mode)) {
 813                 return "symlink";
 814         } elsif (S_ISREG($mode)) {
 815                 return "file";
 816         } else {
 817                 return "unknown";
 818         }
 819 }
 820
 821 # convert file mode in octal to file type description string
 822 sub file_type_long {
 823         my $mode = shift;
 824
 825         if ($mode !~ m/^[0-7]+$/) {
 826                 return $mode;
 827         } else {
 828                 $mode = oct $mode;
 829         }
 830
 831         if (S_ISDIR($mode & S_IFMT)) {
 832                 return "directory";
 833         } elsif (S_ISLNK($mode)) {
 834                 return "symlink";
 835         } elsif (S_ISREG($mode)) {
 836                 if ($mode & S_IXUSR) {
 837                         return "executable";
 838                 } else {
 839                         return "file";
 840                 };
 841         } else {
 842                 return "unknown";
 843         }
 844 }
 845
 846
 847 ## ----------------------------------------------------------------------
 848 ## functions returning short HTML fragments, or transforming HTML fragments
 849 ## which don't belong to other sections
 850
 851 # format line of commit message.
 852 sub format_log_line_html {
 853         my $line = shift;
 854
 855         $line = esc_html($line, -nbsp=>1);
 856         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 857                 my $hash_text = $1;
 858                 my $link =
 859                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 860                                 -class => "text"}, $hash_text);
 861                 $line =~ s/$hash_text/$link/;
 862         }
 863         return $line;
 864 }
 865
 866 # format marker of refs pointing to given object
 867 sub format_ref_marker {
 868         my ($refs, $id) = @_;
 869         my $markers = '';
 870
 871         if (defined $refs->{$id}) {
 872                 foreach my $ref (@{$refs->{$id}}) {
 873                         my ($type, $name) = qw();
 874                         # e.g. tags/v2.6.11 or heads/next
 875                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 876                                 $type = $1;
 877                                 $name = $2;
 878                         } else {
 879                                 $type = "ref";
 880                                 $name = $ref;
 881                         }
 882
 883                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 884                                     esc_html($name) . "</span>";
 885                 }
 886         }
 887
 888         if ($markers) {
 889                 return ' <span class="refs">'. $markers . '</span>';
 890         } else {
 891                 return "";
 892         }
 893 }
 894
 895 # format, perhaps shortened and with markers, title line
 896 sub format_subject_html {
 897         my ($long, $short, $href, $extra) = @_;
 898         $extra = '' unless defined($extra);
 899
 900         if (length($short) < length($long)) {
 901                 return $cgi->a({-href => $href, -class => "list subject",
 902                                 -title => decode_utf8($long)},
 903                        esc_html($short) . $extra);
 904         } else {
 905                 return $cgi->a({-href => $href, -class => "list subject"},
 906                        esc_html($long)  . $extra);
 907         }
 908 }
 909
 910 # format patch (diff) line (rather not to be used for diff headers)
 911 sub format_diff_line {
 912         my $line = shift;
 913         my ($from, $to) = @_;
 914         my $diff_class = "";
 915
 916         chomp $line;
 917
 918         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 919                 # combined diff
 920                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 921                 if ($line =~ m/^\@{3}/) {
 922                         $diff_class = " chunk_header";
 923                 } elsif ($line =~ m/^\\/) {
 924                         $diff_class = " incomplete";
 925                 } elsif ($prefix =~ tr/+/+/) {
 926                         $diff_class = " add";
 927                 } elsif ($prefix =~ tr/-/-/) {
 928                         $diff_class = " rem";
 929                 }
 930         } else {
 931                 # assume ordinary diff
 932                 my $char = substr($line, 0, 1);
 933                 if ($char eq '+') {
 934                         $diff_class = " add";
 935                 } elsif ($char eq '-') {
 936                         $diff_class = " rem";
 937                 } elsif ($char eq '@') {
 938                         $diff_class = " chunk_header";
 939                 } elsif ($char eq "\\") {
 940                         $diff_class = " incomplete";
 941                 }
 942         }
 943         $line = untabify($line);
 944         if ($from && $to && $line =~ m/^\@{2} /) {
 945                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 946                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 947
 948                 $from_lines = 0 unless defined $from_lines;
 949                 $to_lines   = 0 unless defined $to_lines;
 950
 951                 if ($from->{'href'}) {
 952                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 953                                              -class=>"list"}, $from_text);
 954                 }
 955                 if ($to->{'href'}) {
 956                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 957                                              -class=>"list"}, $to_text);
 958                 }
 959                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 960                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 961                 return "<div class=\"diff$diff_class\">$line</div>\n";
 962         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 963                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 964                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 965
 966                 @from_text = split(' ', $ranges);
 967                 for (my $i = 0; $i < @from_text; ++$i) {
 968                         ($from_start[$i], $from_nlines[$i]) =
 969                                 (split(',', substr($from_text[$i], 1)), 0);
 970                 }
 971
 972                 $to_text   = pop @from_text;
 973                 $to_start  = pop @from_start;
 974                 $to_nlines = pop @from_nlines;
 975
 976                 $line = "<span class=\"chunk_info\">$prefix ";
 977                 for (my $i = 0; $i < @from_text; ++$i) {
 978                         if ($from->{'href'}[$i]) {
 979                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 980                                                   -class=>"list"}, $from_text[$i]);
 981                         } else {
 982                                 $line .= $from_text[$i];
 983                         }
 984                         $line .= " ";
 985                 }
 986                 if ($to->{'href'}) {
 987                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 988                                           -class=>"list"}, $to_text);
 989                 } else {
 990                         $line .= $to_text;
 991                 }
 992                 $line .= " $prefix</span>" .
 993                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 994                 return "<div class=\"diff$diff_class\">$line</div>\n";
 995         }
 996         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 997 }
 998
 999 ## ----------------------------------------------------------------------
1000 ## git utility subroutines, invoking git commands
1001
1002 # returns path to the core git executable and the --git-dir parameter as list
1003 sub git_cmd {
1004         return $GIT, '--git-dir='.$git_dir;
1005 }
1006
1007 # returns path to the core git executable and the --git-dir parameter as string
1008 sub git_cmd_str {
1009         return join(' ', git_cmd());
1010 }
1011
1012 # get HEAD ref of given project as hash
1013 sub git_get_head_hash {
1014         my $project = shift;
1015         my $o_git_dir = $git_dir;
1016         my $retval = undef;
1017         $git_dir = "$projectroot/$project";
1018         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1019                 my $head = <$fd>;
1020                 close $fd;
1021                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1022                         $retval = $1;
1023                 }
1024         }
1025         if (defined $o_git_dir) {
1026                 $git_dir = $o_git_dir;
1027         }
1028         return $retval;
1029 }
1030
1031 # get type of given object
1032 sub git_get_type {
1033         my $hash = shift;
1034
1035         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1036         my $type = <$fd>;
1037         close $fd or return;
1038         chomp $type;
1039         return $type;
1040 }
1041
1042 sub git_get_project_config {
1043         my ($key, $type) = @_;
1044
1045         return unless ($key);
1046         $key =~ s/^gitweb\.//;
1047         return if ($key =~ m/\W/);
1048
1049         my @x = (git_cmd(), 'config');
1050         if (defined $type) { push @x, $type; }
1051         push @x, "--get";
1052         push @x, "gitweb.$key";
1053         my $val = qx(@x);
1054         chomp $val;
1055         return ($val);
1056 }
1057
1058 # get hash of given path at given ref
1059 sub git_get_hash_by_path {
1060         my $base = shift;
1061         my $path = shift || return undef;
1062         my $type = shift;
1063
1064         $path =~ s,/+$,,;
1065
1066         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1067                 or die_error(undef, "Open git-ls-tree failed");
1068         my $line = <$fd>;
1069         close $fd or return undef;
1070
1071         if (!defined $line) {
1072                 # there is no tree or hash given by $path at $base
1073                 return undef;
1074         }
1075
1076         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1077         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1078         if (defined $type && $type ne $2) {
1079                 # type doesn't match
1080                 return undef;
1081         }
1082         return $3;
1083 }
1084
1085 # get path of entry with given hash at given tree-ish (ref)
1086 # used to get 'from' filename for combined diff (merge commit) for renames
1087 sub git_get_path_by_hash {
1088         my $base = shift || return;
1089         my $hash = shift || return;
1090
1091         local $/ = "\0";
1092
1093         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1094                 or return undef;
1095         while (my $line = <$fd>) {
1096                 chomp $line;
1097
1098                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1099                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1100                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1101                         close $fd;
1102                         return $1;
1103                 }
1104         }
1105         close $fd;
1106         return undef;
1107 }
1108
1109 ## ......................................................................
1110 ## git utility functions, directly accessing git repository
1111
1112 sub git_get_project_description {
1113         my $path = shift;
1114
1115         open my $fd, "$projectroot/$path/description" or return undef;
1116         my $descr = <$fd>;
1117         close $fd;
1118         chomp $descr;
1119         return $descr;
1120 }
1121
1122 sub git_get_project_url_list {
1123         my $path = shift;
1124
1125         open my $fd, "$projectroot/$path/cloneurl" or return;
1126         my @git_project_url_list = map { chomp; $_ } <$fd>;
1127         close $fd;
1128
1129         return wantarray ? @git_project_url_list : \@git_project_url_list;
1130 }
1131
1132 sub git_get_projects_list {
1133         my ($filter) = @_;
1134         my @list;
1135
1136         $filter ||= '';
1137         $filter =~ s/\.git$//;
1138
1139         my ($check_forks) = gitweb_check_feature('forks');
1140
1141         if (-d $projects_list) {
1142                 # search in directory
1143                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1144                 # remove the trailing "/"
1145                 $dir =~ s!/+$!!;
1146                 my $pfxlen = length("$dir");
1147
1148                 File::Find::find({
1149                         follow_fast => 1, # follow symbolic links
1150                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1151                         wanted => sub {
1152                                 # skip project-list toplevel, if we get it.
1153                                 return if (m!^[/.]$!);
1154                                 # only directories can be git repositories
1155                                 return unless (-d $_);
1156
1157                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1158                                 # we check related file in $projectroot
1159                                 if ($check_forks and $subdir =~ m#/.#) {
1160                                         $File::Find::prune = 1;
1161                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1162                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1163                                         $File::Find::prune = 1;
1164                                 }
1165                         },
1166                 }, "$dir");
1167
1168         } elsif (-f $projects_list) {
1169                 # read from file(url-encoded):
1170                 # 'git%2Fgit.git Linus+Torvalds'
1171                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1172                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1173                 my %paths;
1174                 open my ($fd), $projects_list or return;
1175         PROJECT:
1176                 while (my $line = <$fd>) {
1177                         chomp $line;
1178                         my ($path, $owner) = split ' ', $line;
1179                         $path = unescape($path);
1180                         $owner = unescape($owner);
1181                         if (!defined $path) {
1182                                 next;
1183                         }
1184                         if ($filter ne '') {
1185                                 # looking for forks;
1186                                 my $pfx = substr($path, 0, length($filter));
1187                                 if ($pfx ne $filter) {
1188                                         next PROJECT;
1189                                 }
1190                                 my $sfx = substr($path, length($filter));
1191                                 if ($sfx !~ /^\/.*\.git$/) {
1192                                         next PROJECT;
1193                                 }
1194                         } elsif ($check_forks) {
1195                         PATH:
1196                                 foreach my $filter (keys %paths) {
1197                                         # looking for forks;
1198                                         my $pfx = substr($path, 0, length($filter));
1199                                         if ($pfx ne $filter) {
1200                                                 next PATH;
1201                                         }
1202                                         my $sfx = substr($path, length($filter));
1203                                         if ($sfx !~ /^\/.*\.git$/) {
1204                                                 next PATH;
1205                                         }
1206                                         # is a fork, don't include it in
1207                                         # the list
1208                                         next PROJECT;
1209                                 }
1210                         }
1211                         if (check_export_ok("$projectroot/$path")) {
1212                                 my $pr = {
1213                                         path => $path,
1214                                         owner => decode_utf8($owner),
1215                                 };
1216                                 push @list, $pr;
1217                                 (my $forks_path = $path) =~ s/\.git$//;
1218                                 $paths{$forks_path}++;
1219                         }
1220                 }
1221                 close $fd;
1222         }
1223         return @list;
1224 }
1225
1226 sub git_get_project_owner {
1227         my $project = shift;
1228         my $owner;
1229
1230         return undef unless $project;
1231
1232         # read from file (url-encoded):
1233         # 'git%2Fgit.git Linus+Torvalds'
1234         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1235         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1236         if (-f $projects_list) {
1237                 open (my $fd , $projects_list);
1238                 while (my $line = <$fd>) {
1239                         chomp $line;
1240                         my ($pr, $ow) = split ' ', $line;
1241                         $pr = unescape($pr);
1242                         $ow = unescape($ow);
1243                         if ($pr eq $project) {
1244                                 $owner = decode_utf8($ow);
1245                                 last;
1246                         }
1247                 }
1248                 close $fd;
1249         }
1250         if (!defined $owner) {
1251                 $owner = get_file_owner("$projectroot/$project");
1252         }
1253
1254         return $owner;
1255 }
1256
1257 sub git_get_last_activity {
1258         my ($path) = @_;
1259         my $fd;
1260
1261         $git_dir = "$projectroot/$path";
1262         open($fd, "-|", git_cmd(), 'for-each-ref',
1263              '--format=%(committer)',
1264              '--sort=-committerdate',
1265              '--count=1',
1266              'refs/heads') or return;
1267         my $most_recent = <$fd>;
1268         close $fd or return;
1269         if (defined $most_recent &&
1270             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1271                 my $timestamp = $1;
1272                 my $age = time - $timestamp;
1273                 return ($age, age_string($age));
1274         }
1275 }
1276
1277 sub git_get_references {
1278         my $type = shift || "";
1279         my %refs;
1280         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1281         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1282         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1283                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1284                 or return;
1285
1286         while (my $line = <$fd>) {
1287                 chomp $line;
1288                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1289                         if (defined $refs{$1}) {
1290                                 push @{$refs{$1}}, $2;
1291                         } else {
1292                                 $refs{$1} = [ $2 ];
1293                         }
1294                 }
1295         }
1296         close $fd or return;
1297         return \%refs;
1298 }
1299
1300 sub git_get_rev_name_tags {
1301         my $hash = shift || return undef;
1302
1303         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1304                 or return;
1305         my $name_rev = <$fd>;
1306         close $fd;
1307
1308         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1309                 return $1;
1310         } else {
1311                 # catches also '$hash undefined' output
1312                 return undef;
1313         }
1314 }
1315
1316 ## ----------------------------------------------------------------------
1317 ## parse to hash functions
1318
1319 sub parse_date {
1320         my $epoch = shift;
1321         my $tz = shift || "-0000";
1322
1323         my %date;
1324         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1325         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1326         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1327         $date{'hour'} = $hour;
1328         $date{'minute'} = $min;
1329         $date{'mday'} = $mday;
1330         $date{'day'} = $days[$wday];
1331         $date{'month'} = $months[$mon];
1332         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1333                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1334         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1335                              $mday, $months[$mon], $hour ,$min;
1336         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1337                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1338
1339         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1340         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1341         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1342         $date{'hour_local'} = $hour;
1343         $date{'minute_local'} = $min;
1344         $date{'tz_local'} = $tz;
1345         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1346                                   1900+$year, $mon+1, $mday,
1347                                   $hour, $min, $sec, $tz);
1348         return %date;
1349 }
1350
1351 sub parse_tag {
1352         my $tag_id = shift;
1353         my %tag;
1354         my @comment;
1355
1356         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1357         $tag{'id'} = $tag_id;
1358         while (my $line = <$fd>) {
1359                 chomp $line;
1360                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1361                         $tag{'object'} = $1;
1362                 } elsif ($line =~ m/^type (.+)$/) {
1363                         $tag{'type'} = $1;
1364                 } elsif ($line =~ m/^tag (.+)$/) {
1365                         $tag{'name'} = $1;
1366                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1367                         $tag{'author'} = $1;
1368                         $tag{'epoch'} = $2;
1369                         $tag{'tz'} = $3;
1370                 } elsif ($line =~ m/--BEGIN/) {
1371                         push @comment, $line;
1372                         last;
1373                 } elsif ($line eq "") {
1374                         last;
1375                 }
1376         }
1377         push @comment, <$fd>;
1378         $tag{'comment'} = \@comment;
1379         close $fd or return;
1380         if (!defined $tag{'name'}) {
1381                 return
1382         };
1383         return %tag
1384 }
1385
1386 sub parse_commit_text {
1387         my ($commit_text, $withparents) = @_;
1388         my @commit_lines = split '\n', $commit_text;
1389         my %co;
1390
1391         pop @commit_lines; # Remove '\0'
1392
1393         if (! @commit_lines) {
1394                 return;
1395         }
1396
1397         my $header = shift @commit_lines;
1398         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1399                 return;
1400         }
1401         ($co{'id'}, my @parents) = split ' ', $header;
1402         while (my $line = shift @commit_lines) {
1403                 last if $line eq "\n";
1404                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1405                         $co{'tree'} = $1;
1406                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1407                         push @parents, $1;
1408                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1409                         $co{'author'} = $1;
1410                         $co{'author_epoch'} = $2;
1411                         $co{'author_tz'} = $3;
1412                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1413                                 $co{'author_name'}  = $1;
1414                                 $co{'author_email'} = $2;
1415                         } else {
1416                                 $co{'author_name'} = $co{'author'};
1417                         }
1418                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1419                         $co{'committer'} = $1;
1420                         $co{'committer_epoch'} = $2;
1421                         $co{'committer_tz'} = $3;
1422                         $co{'committer_name'} = $co{'committer'};
1423                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1424                                 $co{'committer_name'}  = $1;
1425                                 $co{'committer_email'} = $2;
1426                         } else {
1427                                 $co{'committer_name'} = $co{'committer'};
1428                         }
1429                 }
1430         }
1431         if (!defined $co{'tree'}) {
1432                 return;
1433         };
1434         $co{'parents'} = \@parents;
1435         $co{'parent'} = $parents[0];
1436
1437         foreach my $title (@commit_lines) {
1438                 $title =~ s/^    //;
1439                 if ($title ne "") {
1440                         $co{'title'} = chop_str($title, 80, 5);
1441                         # remove leading stuff of merges to make the interesting part visible
1442                         if (length($title) > 50) {
1443                                 $title =~ s/^Automatic //;
1444                                 $title =~ s/^merge (of|with) /Merge ... /i;
1445                                 if (length($title) > 50) {
1446                                         $title =~ s/(http|rsync):\/\///;
1447                                 }
1448                                 if (length($title) > 50) {
1449                                         $title =~ s/(master|www|rsync)\.//;
1450                                 }
1451                                 if (length($title) > 50) {
1452                                         $title =~ s/kernel.org:?//;
1453                                 }
1454                                 if (length($title) > 50) {
1455                                         $title =~ s/\/pub\/scm//;
1456                                 }
1457                         }
1458                         $co{'title_short'} = chop_str($title, 50, 5);
1459                         last;
1460                 }
1461         }
1462         if ($co{'title'} eq "") {
1463                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1464         }
1465         # remove added spaces
1466         foreach my $line (@commit_lines) {
1467                 $line =~ s/^    //;
1468         }
1469         $co{'comment'} = \@commit_lines;
1470
1471         my $age = time - $co{'committer_epoch'};
1472         $co{'age'} = $age;
1473         $co{'age_string'} = age_string($age);
1474         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1475         if ($age > 60*60*24*7*2) {
1476                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1477                 $co{'age_string_age'} = $co{'age_string'};
1478         } else {
1479                 $co{'age_string_date'} = $co{'age_string'};
1480                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1481         }
1482         return %co;
1483 }
1484
1485 sub parse_commit {
1486         my ($commit_id) = @_;
1487         my %co;
1488
1489         local $/ = "\0";
1490
1491         open my $fd, "-|", git_cmd(), "rev-list",
1492                 "--parents",
1493                 "--header",
1494                 "--max-count=1",
1495                 $commit_id,
1496                 "--",
1497                 or die_error(undef, "Open git-rev-list failed");
1498         %co = parse_commit_text(<$fd>, 1);
1499         close $fd;
1500
1501         return %co;
1502 }
1503
1504 sub parse_commits {
1505         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1506         my @cos;
1507
1508         $maxcount ||= 1;
1509         $skip ||= 0;
1510
1511         local $/ = "\0";
1512
1513         open my $fd, "-|", git_cmd(), "rev-list",
1514                 "--header",
1515                 ($arg ? ($arg) : ()),
1516                 ("--max-count=" . $maxcount),
1517                 ("--skip=" . $skip),
1518                 $commit_id,
1519                 "--",
1520                 ($filename ? ($filename) : ())
1521                 or die_error(undef, "Open git-rev-list failed");
1522         while (my $line = <$fd>) {
1523                 my %co = parse_commit_text($line);
1524                 push @cos, \%co;
1525         }
1526         close $fd;
1527
1528         return wantarray ? @cos : \@cos;
1529 }
1530
1531 # parse ref from ref_file, given by ref_id, with given type
1532 sub parse_ref {
1533         my $ref_file = shift;
1534         my $ref_id = shift;
1535         my $type = shift || git_get_type($ref_id);
1536         my %ref_item;
1537
1538         $ref_item{'type'} = $type;
1539         $ref_item{'id'} = $ref_id;
1540         $ref_item{'epoch'} = 0;
1541         $ref_item{'age'} = "unknown";
1542         if ($type eq "tag") {
1543                 my %tag = parse_tag($ref_id);
1544                 $ref_item{'comment'} = $tag{'comment'};
1545                 if ($tag{'type'} eq "commit") {
1546                         my %co = parse_commit($tag{'object'});
1547                         $ref_item{'epoch'} = $co{'committer_epoch'};
1548                         $ref_item{'age'} = $co{'age_string'};
1549                 } elsif (defined($tag{'epoch'})) {
1550                         my $age = time - $tag{'epoch'};
1551                         $ref_item{'epoch'} = $tag{'epoch'};
1552                         $ref_item{'age'} = age_string($age);
1553                 }
1554                 $ref_item{'reftype'} = $tag{'type'};
1555                 $ref_item{'name'} = $tag{'name'};
1556                 $ref_item{'refid'} = $tag{'object'};
1557         } elsif ($type eq "commit"){
1558                 my %co = parse_commit($ref_id);
1559                 $ref_item{'reftype'} = "commit";
1560                 $ref_item{'name'} = $ref_file;
1561                 $ref_item{'title'} = $co{'title'};
1562                 $ref_item{'refid'} = $ref_id;
1563                 $ref_item{'epoch'} = $co{'committer_epoch'};
1564                 $ref_item{'age'} = $co{'age_string'};
1565         } else {
1566                 $ref_item{'reftype'} = $type;
1567                 $ref_item{'name'} = $ref_file;
1568                 $ref_item{'refid'} = $ref_id;
1569         }
1570
1571         return %ref_item;
1572 }
1573
1574 # parse line of git-diff-tree "raw" output
1575 sub parse_difftree_raw_line {
1576         my $line = shift;
1577         my %res;
1578
1579         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1580         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1581         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1582                 $res{'from_mode'} = $1;
1583                 $res{'to_mode'} = $2;
1584                 $res{'from_id'} = $3;
1585                 $res{'to_id'} = $4;
1586                 $res{'status'} = $5;
1587                 $res{'similarity'} = $6;
1588                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1589                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1590                 } else {
1591                         $res{'file'} = unquote($7);
1592                 }
1593         }
1594         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1595         # combined diff (for merge commit)
1596         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1597                 $res{'nparents'}  = length($1);
1598                 $res{'from_mode'} = [ split(' ', $2) ];
1599                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1600                 $res{'from_id'} = [ split(' ', $3) ];
1601                 $res{'to_id'} = pop @{$res{'from_id'}};
1602                 $res{'status'} = [ split('', $4) ];
1603                 $res{'to_file'} = unquote($5);
1604         }
1605         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1606         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1607                 $res{'commit'} = $1;
1608         }
1609
1610         return wantarray ? %res : \%res;
1611 }
1612
1613 # parse line of git-ls-tree output
1614 sub parse_ls_tree_line ($;%) {
1615         my $line = shift;
1616         my %opts = @_;
1617         my %res;
1618
1619         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1620         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1621
1622         $res{'mode'} = $1;
1623         $res{'type'} = $2;
1624         $res{'hash'} = $3;
1625         if ($opts{'-z'}) {
1626                 $res{'name'} = $4;
1627         } else {
1628                 $res{'name'} = unquote($4);
1629         }
1630
1631         return wantarray ? %res : \%res;
1632 }
1633
1634 ## ......................................................................
1635 ## parse to array of hashes functions
1636
1637 sub git_get_heads_list {
1638         my $limit = shift;
1639         my @headslist;
1640
1641         open my $fd, '-|', git_cmd(), 'for-each-ref',
1642                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1643                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1644                 'refs/heads'
1645                 or return;
1646         while (my $line = <$fd>) {
1647                 my %ref_item;
1648
1649                 chomp $line;
1650                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1651                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1652                 my ($committer, $epoch, $tz) =
1653                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1654                 $name =~ s!^refs/heads/!!;
1655
1656                 $ref_item{'name'}  = $name;
1657                 $ref_item{'id'}    = $hash;
1658                 $ref_item{'title'} = $title || '(no commit message)';
1659                 $ref_item{'epoch'} = $epoch;
1660                 if ($epoch) {
1661                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1662                 } else {
1663                         $ref_item{'age'} = "unknown";
1664                 }
1665
1666                 push @headslist, \%ref_item;
1667         }
1668         close $fd;
1669
1670         return wantarray ? @headslist : \@headslist;
1671 }
1672
1673 sub git_get_tags_list {
1674         my $limit = shift;
1675         my @tagslist;
1676
1677         open my $fd, '-|', git_cmd(), 'for-each-ref',
1678                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1679                 '--format=%(objectname) %(objecttype) %(refname) '.
1680                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1681                 'refs/tags'
1682                 or return;
1683         while (my $line = <$fd>) {
1684                 my %ref_item;
1685
1686                 chomp $line;
1687                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1688                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1689                 my ($creator, $epoch, $tz) =
1690                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1691                 $name =~ s!^refs/tags/!!;
1692
1693                 $ref_item{'type'} = $type;
1694                 $ref_item{'id'} = $id;
1695                 $ref_item{'name'} = $name;
1696                 if ($type eq "tag") {
1697                         $ref_item{'subject'} = $title;
1698                         $ref_item{'reftype'} = $reftype;
1699                         $ref_item{'refid'}   = $refid;
1700                 } else {
1701                         $ref_item{'reftype'} = $type;
1702                         $ref_item{'refid'}   = $id;
1703                 }
1704
1705                 if ($type eq "tag" || $type eq "commit") {
1706                         $ref_item{'epoch'} = $epoch;
1707                         if ($epoch) {
1708                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1709                         } else {
1710                                 $ref_item{'age'} = "unknown";
1711                         }
1712                 }
1713
1714                 push @tagslist, \%ref_item;
1715         }
1716         close $fd;
1717
1718         return wantarray ? @tagslist : \@tagslist;
1719 }
1720
1721 ## ----------------------------------------------------------------------
1722 ## filesystem-related functions
1723
1724 sub get_file_owner {
1725         my $path = shift;
1726
1727         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1728         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1729         if (!defined $gcos) {
1730                 return undef;
1731         }
1732         my $owner = $gcos;
1733         $owner =~ s/[,;].*$//;
1734         return decode_utf8($owner);
1735 }
1736
1737 ## ......................................................................
1738 ## mimetype related functions
1739
1740 sub mimetype_guess_file {
1741         my $filename = shift;
1742         my $mimemap = shift;
1743         -r $mimemap or return undef;
1744
1745         my %mimemap;
1746         open(MIME, $mimemap) or return undef;
1747         while (<MIME>) {
1748                 next if m/^#/; # skip comments
1749                 my ($mime, $exts) = split(/\t+/);
1750                 if (defined $exts) {
1751                         my @exts = split(/\s+/, $exts);
1752                         foreach my $ext (@exts) {
1753                                 $mimemap{$ext} = $mime;
1754                         }
1755                 }
1756         }
1757         close(MIME);
1758
1759         $filename =~ /\.([^.]*)$/;
1760         return $mimemap{$1};
1761 }
1762
1763 sub mimetype_guess {
1764         my $filename = shift;
1765         my $mime;
1766         $filename =~ /\./ or return undef;
1767
1768         if ($mimetypes_file) {
1769                 my $file = $mimetypes_file;
1770                 if ($file !~ m!^/!) { # if it is relative path
1771                         # it is relative to project
1772                         $file = "$projectroot/$project/$file";
1773                 }
1774                 $mime = mimetype_guess_file($filename, $file);
1775         }
1776         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1777         return $mime;
1778 }
1779
1780 sub blob_mimetype {
1781         my $fd = shift;
1782         my $filename = shift;
1783
1784         if ($filename) {
1785                 my $mime = mimetype_guess($filename);
1786                 $mime and return $mime;
1787         }
1788
1789         # just in case
1790         return $default_blob_plain_mimetype unless $fd;
1791
1792         if (-T $fd) {
1793                 return 'text/plain' .
1794                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1795         } elsif (! $filename) {
1796                 return 'application/octet-stream';
1797         } elsif ($filename =~ m/\.png$/i) {
1798                 return 'image/png';
1799         } elsif ($filename =~ m/\.gif$/i) {
1800                 return 'image/gif';
1801         } elsif ($filename =~ m/\.jpe?g$/i) {
1802                 return 'image/jpeg';
1803         } else {
1804                 return 'application/octet-stream';
1805         }
1806 }
1807
1808 ## ======================================================================
1809 ## functions printing HTML: header, footer, error page
1810
1811 sub git_header_html {
1812         my $status = shift || "200 OK";
1813         my $expires = shift;
1814
1815         my $title = "$site_name";
1816         if (defined $project) {
1817                 $title .= " - " . decode_utf8($project);
1818                 if (defined $action) {
1819                         $title .= "/$action";
1820                         if (defined $file_name) {
1821                                 $title .= " - " . esc_path($file_name);
1822                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1823                                         $title .= "/";
1824                                 }
1825                         }
1826                 }
1827         }
1828         my $content_type;
1829         # require explicit support from the UA if we are to send the page as
1830         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1831         # we have to do this because MSIE sometimes globs '*/*', pretending to
1832         # support xhtml+xml but choking when it gets what it asked for.
1833         if (defined $cgi->http('HTTP_ACCEPT') &&
1834             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1835             $cgi->Accept('application/xhtml+xml') != 0) {
1836                 $content_type = 'application/xhtml+xml';
1837         } else {
1838                 $content_type = 'text/html';
1839         }
1840         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1841                            -status=> $status, -expires => $expires);
1842         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1843         print <<EOF;
1844 <?xml version="1.0" encoding="utf-8"?>
1845 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1846 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1847 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1848 <!-- git core binaries version $git_version -->
1849 <head>
1850 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1851 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1852 <meta name="robots" content="index, nofollow"/>
1853 <title>$title</title>
1854 EOF
1855 # print out each stylesheet that exist
1856         if (defined $stylesheet) {
1857 #provides backwards capability for those people who define style sheet in a config file
1858                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1859         } else {
1860                 foreach my $stylesheet (@stylesheets) {
1861                         next unless $stylesheet;
1862                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1863                 }
1864         }
1865         if (defined $project) {
1866                 printf('<link rel="alternate" title="%s log RSS feed" '.
1867                        'href="%s" type="application/rss+xml" />'."\n",
1868                        esc_param($project), href(action=>"rss"));
1869                 printf('<link rel="alternate" title="%s log Atom feed" '.
1870                        'href="%s" type="application/atom+xml" />'."\n",
1871                        esc_param($project), href(action=>"atom"));
1872         } else {
1873                 printf('<link rel="alternate" title="%s projects list" '.
1874                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1875                        $site_name, href(project=>undef, action=>"project_index"));
1876                 printf('<link rel="alternate" title="%s projects feeds" '.
1877                        'href="%s" type="text/x-opml"/>'."\n",
1878                        $site_name, href(project=>undef, action=>"opml"));
1879         }
1880         if (defined $favicon) {
1881                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1882         }
1883
1884         print "</head>\n" .
1885               "<body>\n";
1886
1887         if (-f $site_header) {
1888                 open (my $fd, $site_header);
1889                 print <$fd>;
1890                 close $fd;
1891         }
1892
1893         print "<div class=\"page_header\">\n" .
1894               $cgi->a({-href => esc_url($logo_url),
1895                        -title => $logo_label},
1896                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1897         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1898         if (defined $project) {
1899                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1900                 if (defined $action) {
1901                         print " / $action";
1902                 }
1903                 print "\n";
1904         }
1905         my ($have_search) = gitweb_check_feature('search');
1906         if ((defined $project) && ($have_search)) {
1907                 if (!defined $searchtext) {
1908                         $searchtext = "";
1909                 }
1910                 my $search_hash;
1911                 if (defined $hash_base) {
1912                         $search_hash = $hash_base;
1913                 } elsif (defined $hash) {
1914                         $search_hash = $hash;
1915                 } else {
1916                         $search_hash = "HEAD";
1917                 }
1918                 $cgi->param("a", "search");
1919                 $cgi->param("h", $search_hash);
1920                 $cgi->param("p", $project);
1921                 print $cgi->startform(-method => "get", -action => $my_uri) .
1922                       "<div class=\"search\">\n" .
1923                       $cgi->hidden(-name => "p") . "\n" .
1924                       $cgi->hidden(-name => "a") . "\n" .
1925                       $cgi->hidden(-name => "h") . "\n" .
1926                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1927                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1928                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1929                       " search:\n",
1930                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1931                       "</div>" .
1932                       $cgi->end_form() . "\n";
1933         }
1934         print "</div>\n";
1935 }
1936
1937 sub git_footer_html {
1938         print "<div class=\"page_footer\">\n";
1939         if (defined $project) {
1940                 my $descr = git_get_project_description($project);
1941                 if (defined $descr) {
1942                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1943                 }
1944                 print $cgi->a({-href => href(action=>"rss"),
1945                               -class => "rss_logo"}, "RSS") . " ";
1946                 print $cgi->a({-href => href(action=>"atom"),
1947                               -class => "rss_logo"}, "Atom") . "\n";
1948         } else {
1949                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1950                               -class => "rss_logo"}, "OPML") . " ";
1951                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1952                               -class => "rss_logo"}, "TXT") . "\n";
1953         }
1954         print "</div>\n" ;
1955
1956         if (-f $site_footer) {
1957                 open (my $fd, $site_footer);
1958                 print <$fd>;
1959                 close $fd;
1960         }
1961
1962         print "</body>\n" .
1963               "</html>";
1964 }
1965
1966 sub die_error {
1967         my $status = shift || "403 Forbidden";
1968         my $error = shift || "Malformed query, file missing or permission denied";
1969
1970         git_header_html($status);
1971         print <<EOF;
1972 <div class="page_body">
1973 <br /><br />
1974 $status - $error
1975 <br />
1976 </div>
1977 EOF
1978         git_footer_html();
1979         exit;
1980 }
1981
1982 ## ----------------------------------------------------------------------
1983 ## functions printing or outputting HTML: navigation
1984
1985 sub git_print_page_nav {
1986         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1987         $extra = '' if !defined $extra; # pager or formats
1988
1989         my @navs = qw(summary shortlog log commit commitdiff tree);
1990         if ($suppress) {
1991                 @navs = grep { $_ ne $suppress } @navs;
1992         }
1993
1994         my %arg = map { $_ => {action=>$_} } @navs;
1995         if (defined $head) {
1996                 for (qw(commit commitdiff)) {
1997                         $arg{$_}{'hash'} = $head;
1998                 }
1999                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2000                         for (qw(shortlog log)) {
2001                                 $arg{$_}{'hash'} = $head;
2002                         }
2003                 }
2004         }
2005         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2006         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2007
2008         print "<div class=\"page_nav\">\n" .
2009                 (join " | ",
2010                  map { $_ eq $current ?
2011                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2012                  } @navs);
2013         print "<br/>\n$extra<br/>\n" .
2014               "</div>\n";
2015 }
2016
2017 sub format_paging_nav {
2018         my ($action, $hash, $head, $page, $nrevs) = @_;
2019         my $paging_nav;
2020
2021
2022         if ($hash ne $head || $page) {
2023                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2024         } else {
2025                 $paging_nav .= "HEAD";
2026         }
2027
2028         if ($page > 0) {
2029                 $paging_nav .= " &sdot; " .
2030                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2031                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2032         } else {
2033                 $paging_nav .= " &sdot; prev";
2034         }
2035
2036         if ($nrevs >= (100 * ($page+1)-1)) {
2037                 $paging_nav .= " &sdot; " .
2038                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2039                                  -accesskey => "n", -title => "Alt-n"}, "next");
2040         } else {
2041                 $paging_nav .= " &sdot; next";
2042         }
2043
2044         return $paging_nav;
2045 }
2046
2047 ## ......................................................................
2048 ## functions printing or outputting HTML: div
2049
2050 sub git_print_header_div {
2051         my ($action, $title, $hash, $hash_base) = @_;
2052         my %args = ();
2053
2054         $args{'action'} = $action;
2055         $args{'hash'} = $hash if $hash;
2056         $args{'hash_base'} = $hash_base if $hash_base;
2057
2058         print "<div class=\"header\">\n" .
2059               $cgi->a({-href => href(%args), -class => "title"},
2060               $title ? $title : $action) .
2061               "\n</div>\n";
2062 }
2063
2064 #sub git_print_authorship (\%) {
2065 sub git_print_authorship {
2066         my $co = shift;
2067
2068         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2069         print "<div class=\"author_date\">" .
2070               esc_html($co->{'author_name'}) .
2071               " [$ad{'rfc2822'}";
2072         if ($ad{'hour_local'} < 6) {
2073                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2074                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2075         } else {
2076                 printf(" (%02d:%02d %s)",
2077                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2078         }
2079         print "]</div>\n";
2080 }
2081
2082 sub git_print_page_path {
2083         my $name = shift;
2084         my $type = shift;
2085         my $hb = shift;
2086
2087
2088         print "<div class=\"page_path\">";
2089         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2090                       -title => 'tree root'}, decode_utf8("[$project]"));
2091         print " / ";
2092         if (defined $name) {
2093                 my @dirname = split '/', $name;
2094                 my $basename = pop @dirname;
2095                 my $fullname = '';
2096
2097                 foreach my $dir (@dirname) {
2098                         $fullname .= ($fullname ? '/' : '') . $dir;
2099                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2100                                                      hash_base=>$hb),
2101                                       -title => $fullname}, esc_path($dir));
2102                         print " / ";
2103                 }
2104                 if (defined $type && $type eq 'blob') {
2105                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2106                                                      hash_base=>$hb),
2107                                       -title => $name}, esc_path($basename));
2108                 } elsif (defined $type && $type eq 'tree') {
2109                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2110                                                      hash_base=>$hb),
2111                                       -title => $name}, esc_path($basename));
2112                         print " / ";
2113                 } else {
2114                         print esc_path($basename);
2115                 }
2116         }
2117         print "<br/></div>\n";
2118 }
2119
2120 # sub git_print_log (\@;%) {
2121 sub git_print_log ($;%) {
2122         my $log = shift;
2123         my %opts = @_;
2124
2125         if ($opts{'-remove_title'}) {
2126                 # remove title, i.e. first line of log
2127                 shift @$log;
2128         }
2129         # remove leading empty lines
2130         while (defined $log->[0] && $log->[0] eq "") {
2131                 shift @$log;
2132         }
2133
2134         # print log
2135         my $signoff = 0;
2136         my $empty = 0;
2137         foreach my $line (@$log) {
2138                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2139                         $signoff = 1;
2140                         $empty = 0;
2141                         if (! $opts{'-remove_signoff'}) {
2142                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2143                                 next;
2144                         } else {
2145                                 # remove signoff lines
2146                                 next;
2147                         }
2148                 } else {
2149                         $signoff = 0;
2150                 }
2151
2152                 # print only one empty line
2153                 # do not print empty line after signoff
2154                 if ($line eq "") {
2155                         next if ($empty || $signoff);
2156                         $empty = 1;
2157                 } else {
2158                         $empty = 0;
2159                 }
2160
2161                 print format_log_line_html($line) . "<br/>\n";
2162         }
2163
2164         if ($opts{'-final_empty_line'}) {
2165                 # end with single empty line
2166                 print "<br/>\n" unless $empty;
2167         }
2168 }
2169
2170 # return link target (what link points to)
2171 sub git_get_link_target {
2172         my $hash = shift;
2173         my $link_target;
2174
2175         # read link
2176         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2177                 or return;
2178         {
2179                 local $/;
2180                 $link_target = <$fd>;
2181         }
2182         close $fd
2183                 or return;
2184
2185         return $link_target;
2186 }
2187
2188 # given link target, and the directory (basedir) the link is in,
2189 # return target of link relative to top directory (top tree);
2190 # return undef if it is not possible (including absolute links).
2191 sub normalize_link_target {
2192         my ($link_target, $basedir, $hash_base) = @_;
2193
2194         # we can normalize symlink target only if $hash_base is provided
2195         return unless $hash_base;
2196
2197         # absolute symlinks (beginning with '/') cannot be normalized
2198         return if (substr($link_target, 0, 1) eq '/');
2199
2200         # normalize link target to path from top (root) tree (dir)
2201         my $path;
2202         if ($basedir) {
2203                 $path = $basedir . '/' . $link_target;
2204         } else {
2205                 # we are in top (root) tree (dir)
2206                 $path = $link_target;
2207         }
2208
2209         # remove //, /./, and /../
2210         my @path_parts;
2211         foreach my $part (split('/', $path)) {
2212                 # discard '.' and ''
2213                 next if (!$part || $part eq '.');
2214                 # handle '..'
2215                 if ($part eq '..') {
2216                         if (@path_parts) {
2217                                 pop @path_parts;
2218                         } else {
2219                                 # link leads outside repository (outside top dir)
2220                                 return;
2221                         }
2222                 } else {
2223                         push @path_parts, $part;
2224                 }
2225         }
2226         $path = join('/', @path_parts);
2227
2228         return $path;
2229 }
2230
2231 # print tree entry (row of git_tree), but without encompassing <tr> element
2232 sub git_print_tree_entry {
2233         my ($t, $basedir, $hash_base, $have_blame) = @_;
2234
2235         my %base_key = ();
2236         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2237
2238         # The format of a table row is: mode list link.  Where mode is
2239         # the mode of the entry, list is the name of the entry, an href,
2240         # and link is the action links of the entry.
2241
2242         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2243         if ($t->{'type'} eq "blob") {
2244                 print "<td class=\"list\">" .
2245                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2246                                                file_name=>"$basedir$t->{'name'}", %base_key),
2247                                 -class => "list"}, esc_path($t->{'name'}));
2248                 if (S_ISLNK(oct $t->{'mode'})) {
2249                         my $link_target = git_get_link_target($t->{'hash'});
2250                         if ($link_target) {
2251                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2252                                 if (defined $norm_target) {
2253                                         print " -> " .
2254                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2255                                                                      file_name=>$norm_target),
2256                                                        -title => $norm_target}, esc_path($link_target));
2257                                 } else {
2258                                         print " -> " . esc_path($link_target);
2259                                 }
2260                         }
2261                 }
2262                 print "</td>\n";
2263                 print "<td class=\"link\">";
2264                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2265                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2266                               "blob");
2267                 if ($have_blame) {
2268                         print " | " .
2269                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2270                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2271                                       "blame");
2272                 }
2273                 if (defined $hash_base) {
2274                         print " | " .
2275                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2276                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2277                                       "history");
2278                 }
2279                 print " | " .
2280                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2281                                                file_name=>"$basedir$t->{'name'}")},
2282                                 "raw");
2283                 print "</td>\n";
2284
2285         } elsif ($t->{'type'} eq "tree") {
2286                 print "<td class=\"list\">";
2287                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2288                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2289                               esc_path($t->{'name'}));
2290                 print "</td>\n";
2291                 print "<td class=\"link\">";
2292                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2293                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2294                               "tree");
2295                 if (defined $hash_base) {
2296                         print " | " .
2297                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2298                                                      file_name=>"$basedir$t->{'name'}")},
2299                                       "history");
2300                 }
2301                 print "</td>\n";
2302         }
2303 }
2304
2305 ## ......................................................................
2306 ## functions printing large fragments of HTML
2307
2308 sub fill_from_file_info {
2309         my ($diff, @parents) = @_;
2310
2311         $diff->{'from_file'} = [ ];
2312         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2313         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2314                 if ($diff->{'status'}[$i] eq 'R' ||
2315                     $diff->{'status'}[$i] eq 'C') {
2316                         $diff->{'from_file'}[$i] =
2317                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2318                 }
2319         }
2320
2321         return $diff;
2322 }
2323
2324 # parameters can be strings, or references to arrays of strings
2325 sub from_ids_eq {
2326         my ($a, $b) = @_;
2327
2328         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2329                 for (my $i = 0; $i < @$a; ++$i) {
2330                         return 0 unless ($a->[$i] eq $b->[$i]);
2331                 }
2332                 return 1;
2333         } elsif (!ref($a) && !ref($b)) {
2334                 return $a eq $b;
2335         } else {
2336                 return 0;
2337         }
2338 }
2339
2340
2341 sub git_difftree_body {
2342         my ($difftree, $hash, @parents) = @_;
2343         my ($parent) = $parents[0];
2344         my ($have_blame) = gitweb_check_feature('blame');
2345         print "<div class=\"list_head\">\n";
2346         if ($#{$difftree} > 10) {
2347                 print(($#{$difftree} + 1) . " files changed:\n");
2348         }
2349         print "</div>\n";
2350
2351         print "<table class=\"" .
2352               (@parents > 1 ? "combined " : "") .
2353               "diff_tree\">\n";
2354         my $alternate = 1;
2355         my $patchno = 0;
2356         foreach my $line (@{$difftree}) {
2357                 my $diff;
2358                 if (ref($line) eq "HASH") {
2359                         # pre-parsed (or generated by hand)
2360                         $diff = $line;
2361                 } else {
2362                         $diff = parse_difftree_raw_line($line);
2363                 }
2364
2365                 if ($alternate) {
2366                         print "<tr class=\"dark\">\n";
2367                 } else {
2368                         print "<tr class=\"light\">\n";
2369                 }
2370                 $alternate ^= 1;
2371
2372                 if (exists $diff->{'nparents'}) { # combined diff
2373
2374                         fill_from_file_info($diff, @parents)
2375                                 unless exists $diff->{'from_file'};
2376
2377                         if ($diff->{'to_id'} ne ('0' x 40)) {
2378                                 # file exists in the result (child) commit
2379                                 print "<td>" .
2380                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2381                                                              file_name=>$diff->{'to_file'},
2382                                                              hash_base=>$hash),
2383                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2384                                       "</td>\n";
2385                         } else {
2386                                 print "<td>" .
2387                                       esc_path($diff->{'to_file'}) .
2388                                       "</td>\n";
2389                         }
2390
2391                         if ($action eq 'commitdiff') {
2392                                 # link to patch
2393                                 $patchno++;
2394                                 print "<td class=\"link\">" .
2395                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2396                                       " | " .
2397                                       "</td>\n";
2398                         }
2399
2400                         my $has_history = 0;
2401                         my $not_deleted = 0;
2402                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2403                                 my $hash_parent = $parents[$i];
2404                                 my $from_hash = $diff->{'from_id'}[$i];
2405                                 my $from_path = $diff->{'from_file'}[$i];
2406                                 my $status = $diff->{'status'}[$i];
2407
2408                                 $has_history ||= ($status ne 'A');
2409                                 $not_deleted ||= ($status ne 'D');
2410
2411                                 if ($status eq 'A') {
2412                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2413                                 } elsif ($status eq 'D') {
2414                                         print "<td class=\"link\">" .
2415                                               $cgi->a({-href => href(action=>"blob",
2416                                                                      hash_base=>$hash,
2417                                                                      hash=>$from_hash,
2418                                                                      file_name=>$from_path)},
2419                                                       "blob" . ($i+1)) .
2420                                               " | </td>\n";
2421                                 } else {
2422                                         if ($diff->{'to_id'} eq $from_hash) {
2423                                                 print "<td class=\"link nochange\">";
2424                                         } else {
2425                                                 print "<td class=\"link\">";
2426                                         }
2427                                         print $cgi->a({-href => href(action=>"blobdiff",
2428                                                                      hash=>$diff->{'to_id'},
2429                                                                      hash_parent=>$from_hash,
2430                                                                      hash_base=>$hash,
2431                                                                      hash_parent_base=>$hash_parent,
2432                                                                      file_name=>$diff->{'to_file'},
2433                                                                      file_parent=>$from_path)},
2434                                                       "diff" . ($i+1)) .
2435                                               " | </td>\n";
2436                                 }
2437                         }
2438
2439                         print "<td class=\"link\">";
2440                         if ($not_deleted) {
2441                                 print $cgi->a({-href => href(action=>"blob",
2442                                                              hash=>$diff->{'to_id'},
2443                                                              file_name=>$diff->{'to_file'},
2444                                                              hash_base=>$hash)},
2445                                               "blob");
2446                                 print " | " if ($has_history);
2447                         }
2448                         if ($has_history) {
2449                                 print $cgi->a({-href => href(action=>"history",
2450                                                              file_name=>$diff->{'to_file'},
2451                                                              hash_base=>$hash)},
2452                                               "history");
2453                         }
2454                         print "</td>\n";
2455
2456                         print "</tr>\n";
2457                         next; # instead of 'else' clause, to avoid extra indent
2458                 }
2459                 # else ordinary diff
2460
2461                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2462                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2463                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2464                         $to_mode_oct = oct $diff->{'to_mode'};
2465                         if (S_ISREG($to_mode_oct)) { # only for regular file
2466                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2467                         }
2468                         $to_file_type = file_type($diff->{'to_mode'});
2469                 }
2470                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2471                         $from_mode_oct = oct $diff->{'from_mode'};
2472                         if (S_ISREG($to_mode_oct)) { # only for regular file
2473                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2474                         }
2475                         $from_file_type = file_type($diff->{'from_mode'});
2476                 }
2477
2478                 if ($diff->{'status'} eq "A") { # created
2479                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2480                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2481                         $mode_chng   .= "]</span>";
2482                         print "<td>";
2483                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2484                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2485                                       -class => "list"}, esc_path($diff->{'file'}));
2486                         print "</td>\n";
2487                         print "<td>$mode_chng</td>\n";
2488                         print "<td class=\"link\">";
2489                         if ($action eq 'commitdiff') {
2490                                 # link to patch
2491                                 $patchno++;
2492                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2493                                 print " | ";
2494                         }
2495                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2496                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2497                                       "blob");
2498                         print "</td>\n";
2499
2500                 } elsif ($diff->{'status'} eq "D") { # deleted
2501                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2502                         print "<td>";
2503                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2504                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2505                                        -class => "list"}, esc_path($diff->{'file'}));
2506                         print "</td>\n";
2507                         print "<td>$mode_chng</td>\n";
2508                         print "<td class=\"link\">";
2509                         if ($action eq 'commitdiff') {
2510                                 # link to patch
2511                                 $patchno++;
2512                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2513                                 print " | ";
2514                         }
2515                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2516                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2517                                       "blob") . " | ";
2518                         if ($have_blame) {
2519                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2520                                                              file_name=>$diff->{'file'})},
2521                                               "blame") . " | ";
2522                         }
2523                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2524                                                      file_name=>$diff->{'file'})},
2525                                       "history");
2526                         print "</td>\n";
2527
2528                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2529                         my $mode_chnge = "";
2530                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2531                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2532                                 if ($from_file_type ne $to_file_type) {
2533                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2534                                 }
2535                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2536                                         if ($from_mode_str && $to_mode_str) {
2537                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2538                                         } elsif ($to_mode_str) {
2539                                                 $mode_chnge .= " mode: $to_mode_str";
2540                                         }
2541                                 }
2542                                 $mode_chnge .= "]</span>\n";
2543                         }
2544                         print "<td>";
2545                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2546                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2547                                       -class => "list"}, esc_path($diff->{'file'}));
2548                         print "</td>\n";
2549                         print "<td>$mode_chnge</td>\n";
2550                         print "<td class=\"link\">";
2551                         if ($action eq 'commitdiff') {
2552                                 # link to patch
2553                                 $patchno++;
2554                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2555                                       " | ";
2556                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2557                                 # "commit" view and modified file (not onlu mode changed)
2558                                 print $cgi->a({-href => href(action=>"blobdiff",
2559                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2560                                                              hash_base=>$hash, hash_parent_base=>$parent,
2561                                                              file_name=>$diff->{'file'})},
2562                                               "diff") .
2563                                       " | ";
2564                         }
2565                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2566                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2567                                        "blob") . " | ";
2568                         if ($have_blame) {
2569                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2570                                                              file_name=>$diff->{'file'})},
2571                                               "blame") . " | ";
2572                         }
2573                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2574                                                      file_name=>$diff->{'file'})},
2575                                       "history");
2576                         print "</td>\n";
2577
2578                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2579                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2580                         my $nstatus = $status_name{$diff->{'status'}};
2581                         my $mode_chng = "";
2582                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2583                                 # mode also for directories, so we cannot use $to_mode_str
2584                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2585                         }
2586                         print "<td>" .
2587                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2588                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2589                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2590                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2591                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2592                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2593                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2594                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2595                               "<td class=\"link\">";
2596                         if ($action eq 'commitdiff') {
2597                                 # link to patch
2598                                 $patchno++;
2599                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2600                                       " | ";
2601                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2602                                 # "commit" view and modified file (not only pure rename or copy)
2603                                 print $cgi->a({-href => href(action=>"blobdiff",
2604                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2605                                                              hash_base=>$hash, hash_parent_base=>$parent,
2606                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2607                                               "diff") .
2608                                       " | ";
2609                         }
2610                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2611                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2612                                       "blob") . " | ";
2613                         if ($have_blame) {
2614                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2615                                                              file_name=>$diff->{'to_file'})},
2616                                               "blame") . " | ";
2617                         }
2618                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2619                                                     file_name=>$diff->{'to_file'})},
2620                                       "history");
2621                         print "</td>\n";
2622
2623                 } # we should not encounter Unmerged (U) or Unknown (X) status
2624                 print "</tr>\n";
2625         }
2626         print "</table>\n";
2627 }
2628
2629 sub git_patchset_body {
2630         my ($fd, $difftree, $hash, @hash_parents) = @_;
2631         my ($hash_parent) = $hash_parents[0];
2632
2633         my $patch_idx = 0;
2634         my $patch_number = 0;
2635         my $patch_line;
2636         my $diffinfo;
2637         my (%from, %to);
2638
2639         print "<div class=\"patchset\">\n";
2640
2641         # skip to first patch
2642         while ($patch_line = <$fd>) {
2643                 chomp $patch_line;
2644
2645                 last if ($patch_line =~ m/^diff /);
2646         }
2647
2648  PATCH:
2649         while ($patch_line) {
2650                 my @diff_header;
2651                 my ($from_id, $to_id);
2652
2653                 # git diff header
2654                 #assert($patch_line =~ m/^diff /) if DEBUG;
2655                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2656                 $patch_number++;
2657                 push @diff_header, $patch_line;
2658
2659                 # extended diff header
2660         EXTENDED_HEADER:
2661                 while ($patch_line = <$fd>) {
2662                         chomp $patch_line;
2663
2664                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2665
2666                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2667                                 $from_id = $1;
2668                                 $to_id   = $2;
2669                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2670                                 $from_id = [ split(',', $1) ];
2671                                 $to_id   = $2;
2672                         }
2673
2674                         push @diff_header, $patch_line;
2675                 }
2676                 my $last_patch_line = $patch_line;
2677
2678                 # check if current patch belong to current raw line
2679                 # and parse raw git-diff line if needed
2680                 if (defined $diffinfo &&
2681                     defined $from_id && defined $to_id &&
2682                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2683                     $diffinfo->{'to_id'} eq $to_id) {
2684                         # this is continuation of a split patch
2685                         print "<div class=\"patch cont\">\n";
2686                 } else {
2687                         # advance raw git-diff output if needed
2688                         $patch_idx++ if defined $diffinfo;
2689
2690                         # read and prepare patch information
2691                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2692                                 # pre-parsed (or generated by hand)
2693                                 $diffinfo = $difftree->[$patch_idx];
2694                         } else {
2695                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2696                         }
2697                         if ($diffinfo->{'nparents'}) {
2698                                 # combined diff
2699                                 $from{'file'} = [];
2700                                 $from{'href'} = [];
2701                                 fill_from_file_info($diffinfo, @hash_parents)
2702                                         unless exists $diffinfo->{'from_file'};
2703                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2704                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2705                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2706                                                 $from{'href'}[$i] = href(action=>"blob",
2707                                                                          hash_base=>$hash_parents[$i],
2708                                                                          hash=>$diffinfo->{'from_id'}[$i],
2709                                                                          file_name=>$from{'file'}[$i]);
2710                                         } else {
2711                                                 $from{'href'}[$i] = undef;
2712                                         }
2713                                 }
2714                         } else {
2715                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2716                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2717                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2718                                                              hash=>$diffinfo->{'from_id'},
2719                                                              file_name=>$from{'file'});
2720                                 } else {
2721                                         delete $from{'href'};
2722                                 }
2723                         }
2724                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2725                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2726                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2727                                                    hash=>$diffinfo->{'to_id'},
2728                                                    file_name=>$to{'file'});
2729                         } else {
2730                                 delete $to{'href'};
2731                         }
2732                         # this is first patch for raw difftree line with $patch_idx index
2733                         # we index @$difftree array from 0, but number patches from 1
2734                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2735                 }
2736
2737                 # print "git diff" header
2738                 $patch_line = shift @diff_header;
2739                 if ($diffinfo->{'nparents'}) {
2740
2741                         # combined diff
2742                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2743                         if ($to{'href'}) {
2744                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2745                                                        esc_path($to{'file'}));
2746                         } else { # file was deleted
2747                                 $patch_line .= esc_path($to{'file'});
2748                         }
2749
2750                 } else {
2751
2752                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2753                         if ($from{'href'}) {
2754                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2755                                                        'a/' . esc_path($from{'file'}));
2756                         } else { # file was added
2757                                 $patch_line .= 'a/' . esc_path($from{'file'});
2758                         }
2759                         $patch_line .= ' ';
2760                         if ($to{'href'}) {
2761                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2762                                                        'b/' . esc_path($to{'file'}));
2763                         } else { # file was deleted
2764                                 $patch_line .= 'b/' . esc_path($to{'file'});
2765                         }
2766
2767                 }
2768                 print "<div class=\"diff header\">$patch_line</div>\n";
2769
2770                 # print extended diff header
2771                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2772         EXTENDED_HEADER:
2773                 foreach $patch_line (@diff_header) {
2774                         # match <path>
2775                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2776                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2777                                                        esc_path($from{'file'}));
2778                         }
2779                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2780                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2781                                                        esc_path($to{'file'}));
2782                         }
2783                         # match single <mode>
2784                         if ($patch_line =~ m/\s(\d{6})$/) {
2785                                 $patch_line .= '<span class="info"> (' .
2786                                                file_type_long($1) .
2787                                                ')</span>';
2788                         }
2789                         # match <hash>
2790                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2791                                 # can match only for combined diff
2792                                 $patch_line = 'index ';
2793                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2794                                         if ($from{'href'}[$i]) {
2795                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2796                                                                         -class=>"hash"},
2797                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2798                                         } else {
2799                                                 $patch_line .= '0' x 7;
2800                                         }
2801                                         # separator
2802                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2803                                 }
2804                                 $patch_line .= '..';
2805                                 if ($to{'href'}) {
2806                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2807                                                                substr($diffinfo->{'to_id'},0,7));
2808                                 } else {
2809                                         $patch_line .= '0' x 7;
2810                                 }
2811
2812                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2813                                 # can match only for ordinary diff
2814                                 my ($from_link, $to_link);
2815                                 if ($from{'href'}) {
2816                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2817                                                              substr($diffinfo->{'from_id'},0,7));
2818                                 } else {
2819                                         $from_link = '0' x 7;
2820                                 }
2821                                 if ($to{'href'}) {
2822                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2823                                                            substr($diffinfo->{'to_id'},0,7));
2824                                 } else {
2825                                         $to_link = '0' x 7;
2826                                 }
2827                                 #affirm {
2828                                 #       my ($from_hash, $to_hash) =
2829                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2830                                 #       my ($from_id, $to_id) =
2831                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2832                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2833                                 #} if DEBUG;
2834                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2835                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2836                         }
2837                         print $patch_line . "<br/>\n";
2838                 }
2839                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2840
2841                 # from-file/to-file diff header
2842                 $patch_line = $last_patch_line;
2843                 if (! $patch_line) {
2844                         print "</div>\n"; # class="patch"
2845                         last PATCH;
2846                 }
2847                 next PATCH if ($patch_line =~ m/^diff /);
2848                 #assert($patch_line =~ m/^---/) if DEBUG;
2849                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2850                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2851                         $patch_line = '--- a/' .
2852                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2853                                               esc_path($from{'file'}));
2854                 }
2855                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2856
2857                 $patch_line = <$fd>;
2858                 chomp $patch_line;
2859
2860                 #assert($patch_line =~ m/^+++/) if DEBUG;
2861                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2862                         $patch_line = '+++ b/' .
2863                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2864                                               esc_path($to{'file'}));
2865                 }
2866                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2867
2868                 # the patch itself
2869         LINE:
2870                 while ($patch_line = <$fd>) {
2871                         chomp $patch_line;
2872
2873                         next PATCH if ($patch_line =~ m/^diff /);
2874
2875                         print format_diff_line($patch_line, \%from, \%to);
2876                 }
2877
2878         } continue {
2879                 print "</div>\n"; # class="patch"
2880         }
2881
2882         if ($patch_number == 0) {
2883                 if (@hash_parents > 1) {
2884                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
2885                 } else {
2886                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
2887                 }
2888         }
2889
2890         print "</div>\n"; # class="patchset"
2891 }
2892
2893 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2894
2895 sub git_project_list_body {
2896         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2897
2898         my ($check_forks) = gitweb_check_feature('forks');
2899
2900         my @projects;
2901         foreach my $pr (@$projlist) {
2902                 my (@aa) = git_get_last_activity($pr->{'path'});
2903                 unless (@aa) {
2904                         next;
2905                 }
2906                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2907                 if (!defined $pr->{'descr'}) {
2908                         my $descr = git_get_project_description($pr->{'path'}) || "";
2909                         $pr->{'descr_long'} = decode_utf8($descr);
2910                         $pr->{'descr'} = chop_str($descr, 25, 5);
2911                 }
2912                 if (!defined $pr->{'owner'}) {
2913                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2914                 }
2915                 if ($check_forks) {
2916                         my $pname = $pr->{'path'};
2917                         if (($pname =~ s/\.git$//) &&
2918                             ($pname !~ /\/$/) &&
2919                             (-d "$projectroot/$pname")) {
2920                                 $pr->{'forks'} = "-d $projectroot/$pname";
2921                         }
2922                         else {
2923                                 $pr->{'forks'} = 0;
2924                         }
2925                 }
2926                 push @projects, $pr;
2927         }
2928
2929         $order ||= $default_projects_order;
2930         $from = 0 unless defined $from;
2931         $to = $#projects if (!defined $to || $#projects < $to);
2932
2933         print "<table class=\"project_list\">\n";
2934         unless ($no_header) {
2935                 print "<tr>\n";
2936                 if ($check_forks) {
2937                         print "<th></th>\n";
2938                 }
2939                 if ($order eq "project") {
2940                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2941                         print "<th>Project</th>\n";
2942                 } else {
2943                         print "<th>" .
2944                               $cgi->a({-href => href(project=>undef, order=>'project'),
2945                                        -class => "header"}, "Project") .
2946                               "</th>\n";
2947                 }
2948                 if ($order eq "descr") {
2949                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2950                         print "<th>Description</th>\n";
2951                 } else {
2952                         print "<th>" .
2953                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2954                                        -class => "header"}, "Description") .
2955                               "</th>\n";
2956                 }
2957                 if ($order eq "owner") {
2958                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2959                         print "<th>Owner</th>\n";
2960                 } else {
2961                         print "<th>" .
2962                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2963                                        -class => "header"}, "Owner") .
2964                               "</th>\n";
2965                 }
2966                 if ($order eq "age") {
2967                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2968                         print "<th>Last Change</th>\n";
2969                 } else {
2970                         print "<th>" .
2971                               $cgi->a({-href => href(project=>undef, order=>'age'),
2972                                        -class => "header"}, "Last Change") .
2973                               "</th>\n";
2974                 }
2975                 print "<th></th>\n" .
2976                       "</tr>\n";
2977         }
2978         my $alternate = 1;
2979         for (my $i = $from; $i <= $to; $i++) {
2980                 my $pr = $projects[$i];
2981                 if ($alternate) {
2982                         print "<tr class=\"dark\">\n";
2983                 } else {
2984                         print "<tr class=\"light\">\n";
2985                 }
2986                 $alternate ^= 1;
2987                 if ($check_forks) {
2988                         print "<td>";
2989                         if ($pr->{'forks'}) {
2990                                 print "<!-- $pr->{'forks'} -->\n";
2991                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2992                         }
2993                         print "</td>\n";
2994                 }
2995                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2996                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2997                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2998                                         -class => "list", -title => $pr->{'descr_long'}},
2999                                         esc_html($pr->{'descr'})) . "</td>\n" .
3000                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3001                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3002                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3003                       "<td class=\"link\">" .
3004                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3005                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3006                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3007                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3008                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3009                       "</td>\n" .
3010                       "</tr>\n";
3011         }
3012         if (defined $extra) {
3013                 print "<tr>\n";
3014                 if ($check_forks) {
3015                         print "<td></td>\n";
3016                 }
3017                 print "<td colspan=\"5\">$extra</td>\n" .
3018                       "</tr>\n";
3019         }
3020         print "</table>\n";
3021 }
3022
3023 sub git_shortlog_body {
3024         # uses global variable $project
3025         my ($commitlist, $from, $to, $refs, $extra) = @_;
3026
3027         my $have_snapshot = gitweb_have_snapshot();
3028
3029         $from = 0 unless defined $from;
3030         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3031
3032         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3033         my $alternate = 1;
3034         for (my $i = $from; $i <= $to; $i++) {
3035                 my %co = %{$commitlist->[$i]};
3036                 my $commit = $co{'id'};
3037                 my $ref = format_ref_marker($refs, $commit);
3038                 if ($alternate) {
3039                         print "<tr class=\"dark\">\n";
3040                 } else {
3041                         print "<tr class=\"light\">\n";
3042                 }
3043                 $alternate ^= 1;
3044                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3045                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3046                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3047                       "<td>";
3048                 print format_subject_html($co{'title'}, $co{'title_short'},
3049                                           href(action=>"commit", hash=>$commit), $ref);
3050                 print "</td>\n" .
3051                       "<td class=\"link\">" .
3052                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3053                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3054                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3055                 if ($have_snapshot) {
3056                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3057                 }
3058                 print "</td>\n" .
3059                       "</tr>\n";
3060         }
3061         if (defined $extra) {
3062                 print "<tr>\n" .
3063                       "<td colspan=\"4\">$extra</td>\n" .
3064                       "</tr>\n";
3065         }
3066         print "</table>\n";
3067 }
3068
3069 sub git_history_body {
3070         # Warning: assumes constant type (blob or tree) during history
3071         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3072
3073         $from = 0 unless defined $from;
3074         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3075
3076         print "<table class=\"history\" cellspacing=\"0\">\n";
3077         my $alternate = 1;
3078         for (my $i = $from; $i <= $to; $i++) {
3079                 my %co = %{$commitlist->[$i]};
3080                 if (!%co) {
3081                         next;
3082                 }
3083                 my $commit = $co{'id'};
3084
3085                 my $ref = format_ref_marker($refs, $commit);
3086
3087                 if ($alternate) {
3088                         print "<tr class=\"dark\">\n";
3089                 } else {
3090                         print "<tr class=\"light\">\n";
3091                 }
3092                 $alternate ^= 1;
3093                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3094                       # shortlog uses      chop_str($co{'author_name'}, 10)
3095                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3096                       "<td>";
3097                 # originally git_history used chop_str($co{'title'}, 50)
3098                 print format_subject_html($co{'title'}, $co{'title_short'},
3099                                           href(action=>"commit", hash=>$commit), $ref);
3100                 print "</td>\n" .
3101                       "<td class=\"link\">" .
3102                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3103                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3104
3105                 if ($ftype eq 'blob') {
3106                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3107                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3108                         if (defined $blob_current && defined $blob_parent &&
3109                                         $blob_current ne $blob_parent) {
3110                                 print " | " .
3111                                         $cgi->a({-href => href(action=>"blobdiff",
3112                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3113                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3114                                                                file_name=>$file_name)},
3115                                                 "diff to current");
3116                         }
3117                 }
3118                 print "</td>\n" .
3119                       "</tr>\n";
3120         }
3121         if (defined $extra) {
3122                 print "<tr>\n" .
3123                       "<td colspan=\"4\">$extra</td>\n" .
3124                       "</tr>\n";
3125         }
3126         print "</table>\n";
3127 }
3128
3129 sub git_tags_body {
3130         # uses global variable $project
3131         my ($taglist, $from, $to, $extra) = @_;
3132         $from = 0 unless defined $from;
3133         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3134
3135         print "<table class=\"tags\" cellspacing=\"0\">\n";
3136         my $alternate = 1;
3137         for (my $i = $from; $i <= $to; $i++) {
3138                 my $entry = $taglist->[$i];
3139                 my %tag = %$entry;
3140                 my $comment = $tag{'subject'};
3141                 my $comment_short;
3142                 if (defined $comment) {
3143                         $comment_short = chop_str($comment, 30, 5);
3144                 }
3145                 if ($alternate) {
3146                         print "<tr class=\"dark\">\n";
3147                 } else {
3148                         print "<tr class=\"light\">\n";
3149                 }
3150                 $alternate ^= 1;
3151                 if (defined $tag{'age'}) {
3152                         print "<td><i>$tag{'age'}</i></td>\n";
3153                 } else {
3154                         print "<td></td>\n";
3155                 }
3156                 print "<td>" .
3157                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3158                                -class => "list name"}, esc_html($tag{'name'})) .
3159                       "</td>\n" .
3160                       "<td>";
3161                 if (defined $comment) {
3162                         print format_subject_html($comment, $comment_short,
3163                                                   href(action=>"tag", hash=>$tag{'id'}));
3164                 }
3165                 print "</td>\n" .
3166                       "<td class=\"selflink\">";
3167                 if ($tag{'type'} eq "tag") {
3168                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3169                 } else {
3170                         print "&nbsp;";
3171                 }
3172                 print "</td>\n" .
3173                       "<td class=\"link\">" . " | " .
3174                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3175                 if ($tag{'reftype'} eq "commit") {
3176                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3177                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3178                 } elsif ($tag{'reftype'} eq "blob") {
3179                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3180                 }
3181                 print "</td>\n" .
3182                       "</tr>";
3183         }
3184         if (defined $extra) {
3185                 print "<tr>\n" .
3186                       "<td colspan=\"5\">$extra</td>\n" .
3187                       "</tr>\n";
3188         }
3189         print "</table>\n";
3190 }
3191
3192 sub git_heads_body {
3193         # uses global variable $project
3194         my ($headlist, $head, $from, $to, $extra) = @_;
3195         $from = 0 unless defined $from;
3196         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3197
3198         print "<table class=\"heads\" cellspacing=\"0\">\n";
3199         my $alternate = 1;
3200         for (my $i = $from; $i <= $to; $i++) {
3201                 my $entry = $headlist->[$i];
3202                 my %ref = %$entry;
3203                 my $curr = $ref{'id'} eq $head;
3204                 if ($alternate) {
3205                         print "<tr class=\"dark\">\n";
3206                 } else {
3207                         print "<tr class=\"light\">\n";
3208                 }
3209                 $alternate ^= 1;
3210                 print "<td><i>$ref{'age'}</i></td>\n" .
3211                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3212                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3213                                -class => "list name"},esc_html($ref{'name'})) .
3214                       "</td>\n" .
3215                       "<td class=\"link\">" .
3216                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3217                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3218                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3219                       "</td>\n" .
3220                       "</tr>";
3221         }
3222         if (defined $extra) {
3223                 print "<tr>\n" .
3224                       "<td colspan=\"3\">$extra</td>\n" .
3225                       "</tr>\n";
3226         }
3227         print "</table>\n";
3228 }
3229
3230 sub git_search_grep_body {
3231         my ($commitlist, $from, $to, $extra) = @_;
3232         $from = 0 unless defined $from;
3233         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3234
3235         print "<table class=\"grep\" cellspacing=\"0\">\n";
3236         my $alternate = 1;
3237         for (my $i = $from; $i <= $to; $i++) {
3238                 my %co = %{$commitlist->[$i]};
3239                 if (!%co) {
3240                         next;
3241                 }
3242                 my $commit = $co{'id'};
3243                 if ($alternate) {
3244                         print "<tr class=\"dark\">\n";
3245                 } else {
3246                         print "<tr class=\"light\">\n";
3247                 }
3248                 $alternate ^= 1;
3249                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3250                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3251                       "<td>" .
3252                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3253                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3254                 my $comment = $co{'comment'};
3255                 foreach my $line (@$comment) {
3256                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3257                                 my $lead = esc_html($1) || "";
3258                                 $lead = chop_str($lead, 30, 10);
3259                                 my $match = esc_html($2) || "";
3260                                 my $trail = esc_html($3) || "";
3261                                 $trail = chop_str($trail, 30, 10);
3262                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3263                                 print chop_str($text, 80, 5) . "<br/>\n";
3264                         }
3265                 }
3266                 print "</td>\n" .
3267                       "<td class=\"link\">" .
3268                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3269                       " | " .
3270                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3271                 print "</td>\n" .
3272                       "</tr>\n";
3273         }
3274         if (defined $extra) {
3275                 print "<tr>\n" .
3276                       "<td colspan=\"3\">$extra</td>\n" .
3277                       "</tr>\n";
3278         }
3279         print "</table>\n";
3280 }
3281
3282 ## ======================================================================
3283 ## ======================================================================
3284 ## actions
3285
3286 sub git_project_list {
3287         my $order = $cgi->param('o');
3288         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3289                 die_error(undef, "Unknown order parameter");
3290         }
3291
3292         my @list = git_get_projects_list();
3293         if (!@list) {
3294                 die_error(undef, "No projects found");
3295         }
3296
3297         git_header_html();
3298         if (-f $home_text) {
3299                 print "<div class=\"index_include\">\n";
3300                 open (my $fd, $home_text);
3301                 print <$fd>;
3302                 close $fd;
3303                 print "</div>\n";
3304         }
3305         git_project_list_body(\@list, $order);
3306         git_footer_html();
3307 }
3308
3309 sub git_forks {
3310         my $order = $cgi->param('o');
3311         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3312                 die_error(undef, "Unknown order parameter");
3313         }
3314
3315         my @list = git_get_projects_list($project);
3316         if (!@list) {
3317                 die_error(undef, "No forks found");
3318         }
3319
3320         git_header_html();
3321         git_print_page_nav('','');
3322         git_print_header_div('summary', "$project forks");
3323         git_project_list_body(\@list, $order);
3324         git_footer_html();
3325 }
3326
3327 sub git_project_index {
3328         my @projects = git_get_projects_list($project);
3329
3330         print $cgi->header(
3331                 -type => 'text/plain',
3332                 -charset => 'utf-8',
3333                 -content_disposition => 'inline; filename="index.aux"');
3334
3335         foreach my $pr (@projects) {
3336                 if (!exists $pr->{'owner'}) {
3337                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3338                 }
3339
3340                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3341                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3342                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3343                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3344                 $path  =~ s/ /\+/g;
3345                 $owner =~ s/ /\+/g;
3346
3347                 print "$path $owner\n";
3348         }
3349 }
3350
3351 sub git_summary {
3352         my $descr = git_get_project_description($project) || "none";
3353         my %co = parse_commit("HEAD");
3354         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3355         my $head = $co{'id'};
3356
3357         my $owner = git_get_project_owner($project);
3358
3359         my $refs = git_get_references();
3360         # These get_*_list functions return one more to allow us to see if
3361         # there are more ...
3362         my @taglist  = git_get_tags_list(16);
3363         my @headlist = git_get_heads_list(16);
3364         my @forklist;
3365         my ($check_forks) = gitweb_check_feature('forks');
3366
3367         if ($check_forks) {
3368                 @forklist = git_get_projects_list($project);
3369         }
3370
3371         git_header_html();
3372         git_print_page_nav('summary','', $head);
3373
3374         print "<div class=\"title\">&nbsp;</div>\n";
3375         print "<table cellspacing=\"0\">\n" .
3376               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3377               "<tr><td>owner</td><td>$owner</td></tr>\n";
3378         if (defined $cd{'rfc2822'}) {
3379                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3380         }
3381
3382         # use per project git URL list in $projectroot/$project/cloneurl
3383         # or make project git URL from git base URL and project name
3384         my $url_tag = "URL";
3385         my @url_list = git_get_project_url_list($project);
3386         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3387         foreach my $git_url (@url_list) {
3388                 next unless $git_url;
3389                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3390                 $url_tag = "";
3391         }
3392         print "</table>\n";
3393
3394         if (-s "$projectroot/$project/README.html") {
3395                 if (open my $fd, "$projectroot/$project/README.html") {
3396                         print "<div class=\"title\">readme</div>\n";
3397                         print $_ while (<$fd>);
3398                         close $fd;
3399                 }
3400         }
3401
3402         # we need to request one more than 16 (0..15) to check if
3403         # those 16 are all
3404         my @commitlist = $head ? parse_commits($head, 17) : ();
3405         if (@commitlist) {
3406                 git_print_header_div('shortlog');
3407                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3408                                   $#commitlist <=  15 ? undef :
3409                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3410         }
3411
3412         if (@taglist) {
3413                 git_print_header_div('tags');
3414                 git_tags_body(\@taglist, 0, 15,
3415                               $#taglist <=  15 ? undef :
3416                               $cgi->a({-href => href(action=>"tags")}, "..."));
3417         }
3418
3419         if (@headlist) {
3420                 git_print_header_div('heads');
3421                 git_heads_body(\@headlist, $head, 0, 15,
3422                                $#headlist <= 15 ? undef :
3423                                $cgi->a({-href => href(action=>"heads")}, "..."));
3424         }
3425
3426         if (@forklist) {
3427                 git_print_header_div('forks');
3428                 git_project_list_body(\@forklist, undef, 0, 15,
3429                                       $#forklist <= 15 ? undef :
3430                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3431                                       'noheader');
3432         }
3433
3434         git_footer_html();
3435 }
3436
3437 sub git_tag {
3438         my $head = git_get_head_hash($project);
3439         git_header_html();
3440         git_print_page_nav('','', $head,undef,$head);
3441         my %tag = parse_tag($hash);
3442
3443         if (! %tag) {
3444                 die_error(undef, "Unknown tag object");
3445         }
3446
3447         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3448         print "<div class=\"title_text\">\n" .
3449               "<table cellspacing=\"0\">\n" .
3450               "<tr>\n" .
3451               "<td>object</td>\n" .
3452               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3453                                $tag{'object'}) . "</td>\n" .
3454               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3455                                               $tag{'type'}) . "</td>\n" .
3456               "</tr>\n";
3457         if (defined($tag{'author'})) {
3458                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3459                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3460                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3461                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3462                         "</td></tr>\n";
3463         }
3464         print "</table>\n\n" .
3465               "</div>\n";
3466         print "<div class=\"page_body\">";
3467         my $comment = $tag{'comment'};
3468         foreach my $line (@$comment) {
3469                 chomp $line;
3470                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3471         }
3472         print "</div>\n";
3473         git_footer_html();
3474 }
3475
3476 sub git_blame2 {
3477         my $fd;
3478         my $ftype;
3479
3480         my ($have_blame) = gitweb_check_feature('blame');
3481         if (!$have_blame) {
3482                 die_error('403 Permission denied', "Permission denied");
3483         }
3484         die_error('404 Not Found', "File name not defined") if (!$file_name);
3485         $hash_base ||= git_get_head_hash($project);
3486         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3487         my %co = parse_commit($hash_base)
3488                 or die_error(undef, "Reading commit failed");
3489         if (!defined $hash) {
3490                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3491                         or die_error(undef, "Error looking up file");
3492         }
3493         $ftype = git_get_type($hash);
3494         if ($ftype !~ "blob") {
3495                 die_error('400 Bad Request', "Object is not a blob");
3496         }
3497         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3498               $file_name, $hash_base)
3499                 or die_error(undef, "Open git-blame failed");
3500         git_header_html();
3501         my $formats_nav =
3502                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3503                         "blob") .
3504                 " | " .
3505                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3506                         "history") .
3507                 " | " .
3508                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3509                         "HEAD");
3510         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3511         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3512         git_print_page_path($file_name, $ftype, $hash_base);
3513         my @rev_color = (qw(light2 dark2));
3514         my $num_colors = scalar(@rev_color);
3515         my $current_color = 0;
3516         my $last_rev;
3517         print <<HTML;
3518 <div class="page_body">
3519 <table class="blame">
3520 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3521 HTML
3522         my %metainfo = ();
3523         while (1) {
3524                 $_ = <$fd>;
3525                 last unless defined $_;
3526                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3527                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3528                 if (!exists $metainfo{$full_rev}) {
3529                         $metainfo{$full_rev} = {};
3530                 }
3531                 my $meta = $metainfo{$full_rev};
3532                 while (<$fd>) {
3533                         last if (s/^\t//);
3534                         if (/^(\S+) (.*)$/) {
3535                                 $meta->{$1} = $2;
3536                         }
3537                 }
3538                 my $data = $_;
3539                 chomp $data;
3540                 my $rev = substr($full_rev, 0, 8);
3541                 my $author = $meta->{'author'};
3542                 my %date = parse_date($meta->{'author-time'},
3543                                       $meta->{'author-tz'});
3544                 my $date = $date{'iso-tz'};
3545                 if ($group_size) {
3546                         $current_color = ++$current_color % $num_colors;
3547                 }
3548                 print "<tr class=\"$rev_color[$current_color]\">\n";
3549                 if ($group_size) {
3550                         print "<td class=\"sha1\"";
3551                         print " title=\"". esc_html($author) . ", $date\"";
3552                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3553                         print ">";
3554                         print $cgi->a({-href => href(action=>"commit",
3555                                                      hash=>$full_rev,
3556                                                      file_name=>$file_name)},
3557                                       esc_html($rev));
3558                         print "</td>\n";
3559                 }
3560                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3561                         or die_error(undef, "Open git-rev-parse failed");
3562                 my $parent_commit = <$dd>;
3563                 close $dd;
3564                 chomp($parent_commit);
3565                 my $blamed = href(action => 'blame',
3566                                   file_name => $meta->{'filename'},
3567                                   hash_base => $parent_commit);
3568                 print "<td class=\"linenr\">";
3569                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3570                                 -id => "l$lineno",
3571                                 -class => "linenr" },
3572                               esc_html($lineno));
3573                 print "</td>";
3574                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3575                 print "</tr>\n";
3576         }
3577         print "</table>\n";
3578         print "</div>";
3579         close $fd
3580                 or print "Reading blob failed\n";
3581         git_footer_html();
3582 }
3583
3584 sub git_blame {
3585         my $fd;
3586
3587         my ($have_blame) = gitweb_check_feature('blame');
3588         if (!$have_blame) {
3589                 die_error('403 Permission denied', "Permission denied");
3590         }
3591         die_error('404 Not Found', "File name not defined") if (!$file_name);
3592         $hash_base ||= git_get_head_hash($project);
3593         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3594         my %co = parse_commit($hash_base)
3595                 or die_error(undef, "Reading commit failed");
3596         if (!defined $hash) {
3597                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3598                         or die_error(undef, "Error lookup file");
3599         }
3600         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3601                 or die_error(undef, "Open git-annotate failed");
3602         git_header_html();
3603         my $formats_nav =
3604                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3605                         "blob") .
3606                 " | " .
3607                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3608                         "history") .
3609                 " | " .
3610                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3611                         "HEAD");
3612         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3613         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3614         git_print_page_path($file_name, 'blob', $hash_base);
3615         print "<div class=\"page_body\">\n";
3616         print <<HTML;
3617 <table class="blame">
3618   <tr>
3619     <th>Commit</th>
3620     <th>Age</th>
3621     <th>Author</th>
3622     <th>Line</th>
3623     <th>Data</th>
3624   </tr>
3625 HTML
3626         my @line_class = (qw(light dark));
3627         my $line_class_len = scalar (@line_class);
3628         my $line_class_num = $#line_class;
3629         while (my $line = <$fd>) {
3630                 my $long_rev;
3631                 my $short_rev;
3632                 my $author;
3633                 my $time;
3634                 my $lineno;
3635                 my $data;
3636                 my $age;
3637                 my $age_str;
3638                 my $age_class;
3639
3640                 chomp $line;
3641                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3642
3643                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3644                         $long_rev = $1;
3645                         $author   = $2;
3646                         $time     = $3;
3647                         $lineno   = $4;
3648                         $data     = $5;
3649                 } else {
3650                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3651                         next;
3652                 }
3653                 $short_rev  = substr ($long_rev, 0, 8);
3654                 $age        = time () - $time;
3655                 $age_str    = age_string ($age);
3656                 $age_str    =~ s/ /&nbsp;/g;
3657                 $age_class  = age_class($age);
3658                 $author     = esc_html ($author);
3659                 $author     =~ s/ /&nbsp;/g;
3660
3661                 $data = untabify($data);
3662                 $data = esc_html ($data);
3663
3664                 print <<HTML;
3665   <tr class="$line_class[$line_class_num]">
3666     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3667     <td class="$age_class">$age_str</td>
3668     <td>$author</td>
3669     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3670     <td class="pre">$data</td>
3671   </tr>
3672 HTML
3673         } # while (my $line = <$fd>)
3674         print "</table>\n\n";
3675         close $fd
3676                 or print "Reading blob failed.\n";
3677         print "</div>";
3678         git_footer_html();
3679 }
3680
3681 sub git_tags {
3682         my $head = git_get_head_hash($project);
3683         git_header_html();
3684         git_print_page_nav('','', $head,undef,$head);
3685         git_print_header_div('summary', $project);
3686
3687         my @tagslist = git_get_tags_list();
3688         if (@tagslist) {
3689                 git_tags_body(\@tagslist);
3690         }
3691         git_footer_html();
3692 }
3693
3694 sub git_heads {
3695         my $head = git_get_head_hash($project);
3696         git_header_html();
3697         git_print_page_nav('','', $head,undef,$head);
3698         git_print_header_div('summary', $project);
3699
3700         my @headslist = git_get_heads_list();
3701         if (@headslist) {
3702                 git_heads_body(\@headslist, $head);
3703         }
3704         git_footer_html();
3705 }
3706
3707 sub git_blob_plain {
3708         my $expires;
3709
3710         if (!defined $hash) {
3711                 if (defined $file_name) {
3712                         my $base = $hash_base || git_get_head_hash($project);
3713                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3714                                 or die_error(undef, "Error lookup file");
3715                 } else {
3716                         die_error(undef, "No file name defined");
3717                 }
3718         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3719                 # blobs defined by non-textual hash id's can be cached
3720                 $expires = "+1d";
3721         }
3722
3723         my $type = shift;
3724         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3725                 or die_error(undef, "Couldn't cat $file_name, $hash");
3726
3727         $type ||= blob_mimetype($fd, $file_name);
3728
3729         # save as filename, even when no $file_name is given
3730         my $save_as = "$hash";
3731         if (defined $file_name) {
3732                 $save_as = $file_name;
3733         } elsif ($type =~ m/^text\//) {
3734                 $save_as .= '.txt';
3735         }
3736
3737         print $cgi->header(
3738                 -type => "$type",
3739                 -expires=>$expires,
3740                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3741         undef $/;
3742         binmode STDOUT, ':raw';
3743         print <$fd>;
3744         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3745         $/ = "\n";
3746         close $fd;
3747 }
3748
3749 sub git_blob {
3750         my $expires;
3751
3752         if (!defined $hash) {
3753                 if (defined $file_name) {
3754                         my $base = $hash_base || git_get_head_hash($project);
3755                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3756                                 or die_error(undef, "Error lookup file");
3757                 } else {
3758                         die_error(undef, "No file name defined");
3759                 }
3760         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3761                 # blobs defined by non-textual hash id's can be cached
3762                 $expires = "+1d";
3763         }
3764
3765         my ($have_blame) = gitweb_check_feature('blame');
3766         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3767                 or die_error(undef, "Couldn't cat $file_name, $hash");
3768         my $mimetype = blob_mimetype($fd, $file_name);
3769         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3770                 close $fd;
3771                 return git_blob_plain($mimetype);
3772         }
3773         # we can have blame only for text/* mimetype
3774         $have_blame &&= ($mimetype =~ m!^text/!);
3775
3776         git_header_html(undef, $expires);
3777         my $formats_nav = '';
3778         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3779                 if (defined $file_name) {
3780                         if ($have_blame) {
3781                                 $formats_nav .=
3782                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3783                                                                hash=>$hash, file_name=>$file_name)},
3784                                                 "blame") .
3785                                         " | ";
3786                         }
3787                         $formats_nav .=
3788                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3789                                                        hash=>$hash, file_name=>$file_name)},
3790                                         "history") .
3791                                 " | " .
3792                                 $cgi->a({-href => href(action=>"blob_plain",
3793                                                        hash=>$hash, file_name=>$file_name)},
3794                                         "raw") .
3795                                 " | " .
3796                                 $cgi->a({-href => href(action=>"blob",
3797                                                        hash_base=>"HEAD", file_name=>$file_name)},
3798                                         "HEAD");
3799                 } else {
3800                         $formats_nav .=
3801                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3802                 }
3803                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3804                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3805         } else {
3806                 print "<div class=\"page_nav\">\n" .
3807                       "<br/><br/></div>\n" .
3808                       "<div class=\"title\">$hash</div>\n";
3809         }
3810         git_print_page_path($file_name, "blob", $hash_base);
3811         print "<div class=\"page_body\">\n";
3812         if ($mimetype =~ m!^text/!) {
3813                 my $nr;
3814                 while (my $line = <$fd>) {
3815                         chomp $line;
3816                         $nr++;
3817                         $line = untabify($line);
3818                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3819                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3820                 }
3821         } elsif ($mimetype =~ m!^image/!) {
3822                 print qq!<img type="$mimetype"!;
3823                 if ($file_name) {
3824                         print qq! alt="$file_name" title="$file_name"!;
3825                 }
3826                 print qq! src="! .
3827                       href(action=>"blob_plain", hash=>$hash,
3828                            hash_base=>$hash_base, file_name=>$file_name) .
3829                       qq!" />\n!;
3830         }
3831         close $fd
3832                 or print "Reading blob failed.\n";
3833         print "</div>";
3834         git_footer_html();
3835 }
3836
3837 sub git_tree {
3838         my $have_snapshot = gitweb_have_snapshot();
3839
3840         if (!defined $hash_base) {
3841                 $hash_base = "HEAD";
3842         }
3843         if (!defined $hash) {
3844                 if (defined $file_name) {
3845                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3846                 } else {
3847                         $hash = $hash_base;
3848                 }
3849         }
3850         $/ = "\0";
3851         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3852                 or die_error(undef, "Open git-ls-tree failed");
3853         my @entries = map { chomp; $_ } <$fd>;
3854         close $fd or die_error(undef, "Reading tree failed");
3855         $/ = "\n";
3856
3857         my $refs = git_get_references();
3858         my $ref = format_ref_marker($refs, $hash_base);
3859         git_header_html();
3860         my $basedir = '';
3861         my ($have_blame) = gitweb_check_feature('blame');
3862         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3863                 my @views_nav = ();
3864                 if (defined $file_name) {
3865                         push @views_nav,
3866                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3867                                                        hash=>$hash, file_name=>$file_name)},
3868                                         "history"),
3869                                 $cgi->a({-href => href(action=>"tree",
3870                                                        hash_base=>"HEAD", file_name=>$file_name)},
3871                                         "HEAD"),
3872                 }
3873                 if ($have_snapshot) {
3874                         # FIXME: Should be available when we have no hash base as well.
3875                         push @views_nav,
3876                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3877                                         "snapshot");
3878                 }
3879                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3880                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3881         } else {
3882                 undef $hash_base;
3883                 print "<div class=\"page_nav\">\n";
3884                 print "<br/><br/></div>\n";
3885                 print "<div class=\"title\">$hash</div>\n";
3886         }
3887         if (defined $file_name) {
3888                 $basedir = $file_name;
3889                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3890                         $basedir .= '/';
3891                 }
3892         }
3893         git_print_page_path($file_name, 'tree', $hash_base);
3894         print "<div class=\"page_body\">\n";
3895         print "<table cellspacing=\"0\">\n";
3896         my $alternate = 1;
3897         # '..' (top directory) link if possible
3898         if (defined $hash_base &&
3899             defined $file_name && $file_name =~ m![^/]+$!) {
3900                 if ($alternate) {
3901                         print "<tr class=\"dark\">\n";
3902                 } else {
3903                         print "<tr class=\"light\">\n";
3904                 }
3905                 $alternate ^= 1;
3906
3907                 my $up = $file_name;
3908                 $up =~ s!/?[^/]+$!!;
3909                 undef $up unless $up;
3910                 # based on git_print_tree_entry
3911                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3912                 print '<td class="list">';
3913                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3914                                              file_name=>$up)},
3915                               "..");
3916                 print "</td>\n";
3917                 print "<td class=\"link\"></td>\n";
3918
3919                 print "</tr>\n";
3920         }
3921         foreach my $line (@entries) {
3922                 my %t = parse_ls_tree_line($line, -z => 1);
3923
3924                 if ($alternate) {
3925                         print "<tr class=\"dark\">\n";
3926                 } else {
3927                         print "<tr class=\"light\">\n";
3928                 }
3929                 $alternate ^= 1;
3930
3931                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3932
3933                 print "</tr>\n";
3934         }
3935         print "</table>\n" .
3936               "</div>";
3937         git_footer_html();
3938 }
3939
3940 sub git_snapshot {
3941         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3942         my $have_snapshot = (defined $ctype && defined $suffix);
3943         if (!$have_snapshot) {
3944                 die_error('403 Permission denied', "Permission denied");
3945         }
3946
3947         if (!defined $hash) {
3948                 $hash = git_get_head_hash($project);
3949         }
3950
3951         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3952
3953         print $cgi->header(
3954                 -type => "application/$ctype",
3955                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3956                 -status => '200 OK');
3957
3958         my $git = git_cmd_str();
3959         my $name = $project;
3960         $name =~ s/\047/\047\\\047\047/g;
3961         open my $fd, "-|",
3962                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3963                 or die_error(undef, "Execute git-tar-tree failed");
3964         binmode STDOUT, ':raw';
3965         print <$fd>;
3966         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3967         close $fd;
3968
3969 }
3970
3971 sub git_log {
3972         my $head = git_get_head_hash($project);
3973         if (!defined $hash) {
3974                 $hash = $head;
3975         }
3976         if (!defined $page) {
3977                 $page = 0;
3978         }
3979         my $refs = git_get_references();
3980
3981         my @commitlist = parse_commits($hash, 101, (100 * $page));
3982
3983         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3984
3985         git_header_html();
3986         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3987
3988         if (!@commitlist) {
3989                 my %co = parse_commit($hash);
3990
3991                 git_print_header_div('summary', $project);
3992                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3993         }
3994         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3995         for (my $i = 0; $i <= $to; $i++) {
3996                 my %co = %{$commitlist[$i]};
3997                 next if !%co;
3998                 my $commit = $co{'id'};
3999                 my $ref = format_ref_marker($refs, $commit);
4000                 my %ad = parse_date($co{'author_epoch'});
4001                 git_print_header_div('commit',
4002                                "<span class=\"age\">$co{'age_string'}</span>" .
4003                                esc_html($co{'title'}) . $ref,
4004                                $commit);
4005                 print "<div class=\"title_text\">\n" .
4006                       "<div class=\"log_link\">\n" .
4007                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4008                       " | " .
4009                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4010                       " | " .
4011                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4012                       "<br/>\n" .
4013                       "</div>\n" .
4014                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4015                       "</div>\n";
4016
4017                 print "<div class=\"log_body\">\n";
4018                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4019                 print "</div>\n";
4020         }
4021         if ($#commitlist >= 100) {
4022                 print "<div class=\"page_nav\">\n";
4023                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4024                                -accesskey => "n", -title => "Alt-n"}, "next");
4025                 print "</div>\n";
4026         }
4027         git_footer_html();
4028 }
4029
4030 sub git_commit {
4031         $hash ||= $hash_base || "HEAD";
4032         my %co = parse_commit($hash);
4033         if (!%co) {
4034                 die_error(undef, "Unknown commit object");
4035         }
4036         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4037         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4038
4039         my $parent  = $co{'parent'};
4040         my $parents = $co{'parents'}; # listref
4041
4042         # we need to prepare $formats_nav before any parameter munging
4043         my $formats_nav;
4044         if (!defined $parent) {
4045                 # --root commitdiff
4046                 $formats_nav .= '(initial)';
4047         } elsif (@$parents == 1) {
4048                 # single parent commit
4049                 $formats_nav .=
4050                         '(parent: ' .
4051                         $cgi->a({-href => href(action=>"commit",
4052                                                hash=>$parent)},
4053                                 esc_html(substr($parent, 0, 7))) .
4054                         ')';
4055         } else {
4056                 # merge commit
4057                 $formats_nav .=
4058                         '(merge: ' .
4059                         join(' ', map {
4060                                 $cgi->a({-href => href(action=>"commit",
4061                                                        hash=>$_)},
4062                                         esc_html(substr($_, 0, 7)));
4063                         } @$parents ) .
4064                         ')';
4065         }
4066
4067         if (!defined $parent) {
4068                 $parent = "--root";
4069         }
4070         my @difftree;
4071         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4072                 @diff_opts,
4073                 (@$parents <= 1 ? $parent : '-c'),
4074                 $hash, "--"
4075                 or die_error(undef, "Open git-diff-tree failed");
4076         @difftree = map { chomp; $_ } <$fd>;
4077         close $fd or die_error(undef, "Reading git-diff-tree failed");
4078
4079         # non-textual hash id's can be cached
4080         my $expires;
4081         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4082                 $expires = "+1d";
4083         }
4084         my $refs = git_get_references();
4085         my $ref = format_ref_marker($refs, $co{'id'});
4086
4087         my $have_snapshot = gitweb_have_snapshot();
4088
4089         git_header_html(undef, $expires);
4090         git_print_page_nav('commit', '',
4091                            $hash, $co{'tree'}, $hash,
4092                            $formats_nav);
4093
4094         if (defined $co{'parent'}) {
4095                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4096         } else {
4097                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4098         }
4099         print "<div class=\"title_text\">\n" .
4100               "<table cellspacing=\"0\">\n";
4101         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4102               "<tr>" .
4103               "<td></td><td> $ad{'rfc2822'}";
4104         if ($ad{'hour_local'} < 6) {
4105                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4106                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4107         } else {
4108                 printf(" (%02d:%02d %s)",
4109                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4110         }
4111         print "</td>" .
4112               "</tr>\n";
4113         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4114         print "<tr><td></td><td> $cd{'rfc2822'}" .
4115               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4116               "</td></tr>\n";
4117         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4118         print "<tr>" .
4119               "<td>tree</td>" .
4120               "<td class=\"sha1\">" .
4121               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4122                        class => "list"}, $co{'tree'}) .
4123               "</td>" .
4124               "<td class=\"link\">" .
4125               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4126                       "tree");
4127         if ($have_snapshot) {
4128                 print " | " .
4129                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4130         }
4131         print "</td>" .
4132               "</tr>\n";
4133
4134         foreach my $par (@$parents) {
4135                 print "<tr>" .
4136                       "<td>parent</td>" .
4137                       "<td class=\"sha1\">" .
4138                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4139                                class => "list"}, $par) .
4140                       "</td>" .
4141                       "<td class=\"link\">" .
4142                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4143                       " | " .
4144                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4145                       "</td>" .
4146                       "</tr>\n";
4147         }
4148         print "</table>".
4149               "</div>\n";
4150
4151         print "<div class=\"page_body\">\n";
4152         git_print_log($co{'comment'});
4153         print "</div>\n";
4154
4155         git_difftree_body(\@difftree, $hash, @$parents);
4156
4157         git_footer_html();
4158 }
4159
4160 sub git_object {
4161         # object is defined by:
4162         # - hash or hash_base alone
4163         # - hash_base and file_name
4164         my $type;
4165
4166         # - hash or hash_base alone
4167         if ($hash || ($hash_base && !defined $file_name)) {
4168                 my $object_id = $hash || $hash_base;
4169
4170                 my $git_command = git_cmd_str();
4171                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4172                         or die_error('404 Not Found', "Object does not exist");
4173                 $type = <$fd>;
4174                 chomp $type;
4175                 close $fd
4176                         or die_error('404 Not Found', "Object does not exist");
4177
4178         # - hash_base and file_name
4179         } elsif ($hash_base && defined $file_name) {
4180                 $file_name =~ s,/+$,,;
4181
4182                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4183                         or die_error('404 Not Found', "Base object does not exist");
4184
4185                 # here errors should not hapen
4186                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4187                         or die_error(undef, "Open git-ls-tree failed");
4188                 my $line = <$fd>;
4189                 close $fd;
4190
4191                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4192                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4193                         die_error('404 Not Found', "File or directory for given base does not exist");
4194                 }
4195                 $type = $2;
4196                 $hash = $3;
4197         } else {
4198                 die_error('404 Not Found', "Not enough information to find object");
4199         }
4200
4201         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4202                                           hash=>$hash, hash_base=>$hash_base,
4203                                           file_name=>$file_name),
4204                              -status => '302 Found');
4205 }
4206
4207 sub git_blobdiff {
4208         my $format = shift || 'html';
4209
4210         my $fd;
4211         my @difftree;
4212         my %diffinfo;
4213         my $expires;
4214
4215         # preparing $fd and %diffinfo for git_patchset_body
4216         # new style URI
4217         if (defined $hash_base && defined $hash_parent_base) {
4218                 if (defined $file_name) {
4219                         # read raw output
4220                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4221                                 $hash_parent_base, $hash_base,
4222                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4223                                 or die_error(undef, "Open git-diff-tree failed");
4224                         @difftree = map { chomp; $_ } <$fd>;
4225                         close $fd
4226                                 or die_error(undef, "Reading git-diff-tree failed");
4227                         @difftree
4228                                 or die_error('404 Not Found', "Blob diff not found");
4229
4230                 } elsif (defined $hash &&
4231                          $hash =~ /[0-9a-fA-F]{40}/) {
4232                         # try to find filename from $hash
4233
4234                         # read filtered raw output
4235                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4236                                 $hash_parent_base, $hash_base, "--"
4237                                 or die_error(undef, "Open git-diff-tree failed");
4238                         @difftree =
4239                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4240                                 # $hash == to_id
4241                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4242                                 map { chomp; $_ } <$fd>;
4243                         close $fd
4244                                 or die_error(undef, "Reading git-diff-tree failed");
4245                         @difftree
4246                                 or die_error('404 Not Found', "Blob diff not found");
4247
4248                 } else {
4249                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4250                 }
4251
4252                 if (@difftree > 1) {
4253                         die_error('404 Not Found', "Ambiguous blob diff specification");
4254                 }
4255
4256                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4257                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4258                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4259
4260                 $hash_parent ||= $diffinfo{'from_id'};
4261                 $hash        ||= $diffinfo{'to_id'};
4262
4263                 # non-textual hash id's can be cached
4264                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4265                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4266                         $expires = '+1d';
4267                 }
4268
4269                 # open patch output
4270                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4271                         '-p', ($format eq 'html' ? "--full-index" : ()),
4272                         $hash_parent_base, $hash_base,
4273                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4274                         or die_error(undef, "Open git-diff-tree failed");
4275         }
4276
4277         # old/legacy style URI
4278         if (!%diffinfo && # if new style URI failed
4279             defined $hash && defined $hash_parent) {
4280                 # fake git-diff-tree raw output
4281                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4282                 $diffinfo{'from_id'} = $hash_parent;
4283                 $diffinfo{'to_id'}   = $hash;
4284                 if (defined $file_name) {
4285                         if (defined $file_parent) {
4286                                 $diffinfo{'status'} = '2';
4287                                 $diffinfo{'from_file'} = $file_parent;
4288                                 $diffinfo{'to_file'}   = $file_name;
4289                         } else { # assume not renamed
4290                                 $diffinfo{'status'} = '1';
4291                                 $diffinfo{'from_file'} = $file_name;
4292                                 $diffinfo{'to_file'}   = $file_name;
4293                         }
4294                 } else { # no filename given
4295                         $diffinfo{'status'} = '2';
4296                         $diffinfo{'from_file'} = $hash_parent;
4297                         $diffinfo{'to_file'}   = $hash;
4298                 }
4299
4300                 # non-textual hash id's can be cached
4301                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4302                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4303                         $expires = '+1d';
4304                 }
4305
4306                 # open patch output
4307                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4308                         '-p', ($format eq 'html' ? "--full-index" : ()),
4309                         $hash_parent, $hash, "--"
4310                         or die_error(undef, "Open git-diff failed");
4311         } else  {
4312                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4313                         unless %diffinfo;
4314         }
4315
4316         # header
4317         if ($format eq 'html') {
4318                 my $formats_nav =
4319                         $cgi->a({-href => href(action=>"blobdiff_plain",
4320                                                hash=>$hash, hash_parent=>$hash_parent,
4321                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4322                                                file_name=>$file_name, file_parent=>$file_parent)},
4323                                 "raw");
4324                 git_header_html(undef, $expires);
4325                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4326                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4327                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4328                 } else {
4329                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4330                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4331                 }
4332                 if (defined $file_name) {
4333                         git_print_page_path($file_name, "blob", $hash_base);
4334                 } else {
4335                         print "<div class=\"page_path\"></div>\n";
4336                 }
4337
4338         } elsif ($format eq 'plain') {
4339                 print $cgi->header(
4340                         -type => 'text/plain',
4341                         -charset => 'utf-8',
4342                         -expires => $expires,
4343                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4344
4345                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4346
4347         } else {
4348                 die_error(undef, "Unknown blobdiff format");
4349         }
4350
4351         # patch
4352         if ($format eq 'html') {
4353                 print "<div class=\"page_body\">\n";
4354
4355                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4356                 close $fd;
4357
4358                 print "</div>\n"; # class="page_body"
4359                 git_footer_html();
4360
4361         } else {
4362                 while (my $line = <$fd>) {
4363                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4364                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4365
4366                         print $line;
4367
4368                         last if $line =~ m!^\+\+\+!;
4369                 }
4370                 local $/ = undef;
4371                 print <$fd>;
4372                 close $fd;
4373         }
4374 }
4375
4376 sub git_blobdiff_plain {
4377         git_blobdiff('plain');
4378 }
4379
4380 sub git_commitdiff {
4381         my $format = shift || 'html';
4382         $hash ||= $hash_base || "HEAD";
4383         my %co = parse_commit($hash);
4384         if (!%co) {
4385                 die_error(undef, "Unknown commit object");
4386         }
4387
4388         # we need to prepare $formats_nav before any parameter munging
4389         my $formats_nav;
4390         if ($format eq 'html') {
4391                 $formats_nav =
4392                         $cgi->a({-href => href(action=>"commitdiff_plain",
4393                                                hash=>$hash, hash_parent=>$hash_parent)},
4394                                 "raw");
4395
4396                 if (defined $hash_parent) {
4397                         # commitdiff with two commits given
4398                         my $hash_parent_short = $hash_parent;
4399                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4400                                 $hash_parent_short = substr($hash_parent, 0, 7);
4401                         }
4402                         $formats_nav .=
4403                                 ' (from: ' .
4404                                 $cgi->a({-href => href(action=>"commitdiff",
4405                                                        hash=>$hash_parent)},
4406                                         esc_html($hash_parent_short)) .
4407                                 ')';
4408                 } elsif (!$co{'parent'}) {
4409                         # --root commitdiff
4410                         $formats_nav .= ' (initial)';
4411                 } elsif (scalar @{$co{'parents'}} == 1) {
4412                         # single parent commit
4413                         $formats_nav .=
4414                                 ' (parent: ' .
4415                                 $cgi->a({-href => href(action=>"commitdiff",
4416                                                        hash=>$co{'parent'})},
4417                                         esc_html(substr($co{'parent'}, 0, 7))) .
4418                                 ')';
4419                 } else {
4420                         # merge commit
4421                         $formats_nav .=
4422                                 ' (merge: ' .
4423                                 join(' ', map {
4424                                         $cgi->a({-href => href(action=>"commitdiff",
4425                                                                hash=>$_)},
4426                                                 esc_html(substr($_, 0, 7)));
4427                                 } @{$co{'parents'}} ) .
4428                                 ')';
4429                 }
4430         }
4431
4432         my $hash_parent_param = $hash_parent;
4433         if (!defined $hash_parent) {
4434                 $hash_parent_param =
4435                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4436         }
4437
4438         # read commitdiff
4439         my $fd;
4440         my @difftree;
4441         if ($format eq 'html') {
4442                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4443                         "--no-commit-id", "--patch-with-raw", "--full-index",
4444                         $hash_parent_param, $hash, "--"
4445                         or die_error(undef, "Open git-diff-tree failed");
4446
4447                 while (my $line = <$fd>) {
4448                         chomp $line;
4449                         # empty line ends raw part of diff-tree output
4450                         last unless $line;
4451                         push @difftree, scalar parse_difftree_raw_line($line);
4452                 }
4453
4454         } elsif ($format eq 'plain') {
4455                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4456                         '-p', $hash_parent_param, $hash, "--"
4457                         or die_error(undef, "Open git-diff-tree failed");
4458
4459         } else {
4460                 die_error(undef, "Unknown commitdiff format");
4461         }
4462
4463         # non-textual hash id's can be cached
4464         my $expires;
4465         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4466                 $expires = "+1d";
4467         }
4468
4469         # write commit message
4470         if ($format eq 'html') {
4471                 my $refs = git_get_references();
4472                 my $ref = format_ref_marker($refs, $co{'id'});
4473
4474                 git_header_html(undef, $expires);
4475                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4476                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4477                 git_print_authorship(\%co);
4478                 print "<div class=\"page_body\">\n";
4479                 if (@{$co{'comment'}} > 1) {
4480                         print "<div class=\"log\">\n";
4481                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4482                         print "</div>\n"; # class="log"
4483                 }
4484
4485         } elsif ($format eq 'plain') {
4486                 my $refs = git_get_references("tags");
4487                 my $tagname = git_get_rev_name_tags($hash);
4488                 my $filename = basename($project) . "-$hash.patch";
4489
4490                 print $cgi->header(
4491                         -type => 'text/plain',
4492                         -charset => 'utf-8',
4493                         -expires => $expires,
4494                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4495                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4496                 print <<TEXT;
4497 From: $co{'author'}
4498 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4499 Subject: $co{'title'}
4500 TEXT
4501                 print "X-Git-Tag: $tagname\n" if $tagname;
4502                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4503
4504                 foreach my $line (@{$co{'comment'}}) {
4505                         print "$line\n";
4506                 }
4507                 print "---\n\n";
4508         }
4509
4510         # write patch
4511         if ($format eq 'html') {
4512                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4513                 print "<br/>\n";
4514
4515                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4516                 close $fd;
4517                 print "</div>\n"; # class="page_body"
4518                 git_footer_html();
4519
4520         } elsif ($format eq 'plain') {
4521                 local $/ = undef;
4522                 print <$fd>;
4523                 close $fd
4524                         or print "Reading git-diff-tree failed\n";
4525         }
4526 }
4527
4528 sub git_commitdiff_plain {
4529         git_commitdiff('plain');
4530 }
4531
4532 sub git_history {
4533         if (!defined $hash_base) {
4534                 $hash_base = git_get_head_hash($project);
4535         }
4536         if (!defined $page) {
4537                 $page = 0;
4538         }
4539         my $ftype;
4540         my %co = parse_commit($hash_base);
4541         if (!%co) {
4542                 die_error(undef, "Unknown commit object");
4543         }
4544
4545         my $refs = git_get_references();
4546         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4547
4548         if (!defined $hash && defined $file_name) {
4549                 $hash = git_get_hash_by_path($hash_base, $file_name);
4550         }
4551         if (defined $hash) {
4552                 $ftype = git_get_type($hash);
4553         }
4554
4555         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4556
4557         my $paging_nav = '';
4558         if ($page > 0) {
4559                 $paging_nav .=
4560                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4561                                                file_name=>$file_name)},
4562                                 "first");
4563                 $paging_nav .= " &sdot; " .
4564                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4565                                                file_name=>$file_name, page=>$page-1),
4566                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4567         } else {
4568                 $paging_nav .= "first";
4569                 $paging_nav .= " &sdot; prev";
4570         }
4571         if ($#commitlist >= 100) {
4572                 $paging_nav .= " &sdot; " .
4573                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4574                                                file_name=>$file_name, page=>$page+1),
4575                                  -accesskey => "n", -title => "Alt-n"}, "next");
4576         } else {
4577                 $paging_nav .= " &sdot; next";
4578         }
4579         my $next_link = '';
4580         if ($#commitlist >= 100) {
4581                 $next_link =
4582                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4583                                                file_name=>$file_name, page=>$page+1),
4584                                  -accesskey => "n", -title => "Alt-n"}, "next");
4585         }
4586
4587         git_header_html();
4588         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4589         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4590         git_print_page_path($file_name, $ftype, $hash_base);
4591
4592         git_history_body(\@commitlist, 0, 99,
4593                          $refs, $hash_base, $ftype, $next_link);
4594
4595         git_footer_html();
4596 }
4597
4598 sub git_search {
4599         my ($have_search) = gitweb_check_feature('search');
4600         if (!$have_search) {
4601                 die_error('403 Permission denied', "Permission denied");
4602         }
4603         if (!defined $searchtext) {
4604                 die_error(undef, "Text field empty");
4605         }
4606         if (!defined $hash) {
4607                 $hash = git_get_head_hash($project);
4608         }
4609         my %co = parse_commit($hash);
4610         if (!%co) {
4611                 die_error(undef, "Unknown commit object");
4612         }
4613         if (!defined $page) {
4614                 $page = 0;
4615         }
4616
4617         $searchtype ||= 'commit';
4618         if ($searchtype eq 'pickaxe') {
4619                 # pickaxe may take all resources of your box and run for several minutes
4620                 # with every query - so decide by yourself how public you make this feature
4621                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4622                 if (!$have_pickaxe) {
4623                         die_error('403 Permission denied', "Permission denied");
4624                 }
4625         }
4626
4627         git_header_html();
4628
4629         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4630                 my $greptype;
4631                 if ($searchtype eq 'commit') {
4632                         $greptype = "--grep=";
4633                 } elsif ($searchtype eq 'author') {
4634                         $greptype = "--author=";
4635                 } elsif ($searchtype eq 'committer') {
4636                         $greptype = "--committer=";
4637                 }
4638                 $greptype .= $search_regexp;
4639                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4640
4641                 my $paging_nav = '';
4642                 if ($page > 0) {
4643                         $paging_nav .=
4644                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4645                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4646                                         "first");
4647                         $paging_nav .= " &sdot; " .
4648                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4649                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4650                                                        page=>$page-1),
4651                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4652                 } else {
4653                         $paging_nav .= "first";
4654                         $paging_nav .= " &sdot; prev";
4655                 }
4656                 if ($#commitlist >= 100) {
4657                         $paging_nav .= " &sdot; " .
4658                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4659                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4660                                                        page=>$page+1),
4661                                          -accesskey => "n", -title => "Alt-n"}, "next");
4662                 } else {
4663                         $paging_nav .= " &sdot; next";
4664                 }
4665                 my $next_link = '';
4666                 if ($#commitlist >= 100) {
4667                         $next_link =
4668                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4669                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4670                                                        page=>$page+1),
4671                                          -accesskey => "n", -title => "Alt-n"}, "next");
4672                 }
4673
4674                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4675                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4676                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4677         }
4678
4679         if ($searchtype eq 'pickaxe') {
4680                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4681                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4682
4683                 print "<table cellspacing=\"0\">\n";
4684                 my $alternate = 1;
4685                 $/ = "\n";
4686                 my $git_command = git_cmd_str();
4687                 open my $fd, "-|", "$git_command rev-list $hash | " .
4688                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4689                 undef %co;
4690                 my @files;
4691                 while (my $line = <$fd>) {
4692                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4693                                 my %set;
4694                                 $set{'file'} = $6;
4695                                 $set{'from_id'} = $3;
4696                                 $set{'to_id'} = $4;
4697                                 $set{'id'} = $set{'to_id'};
4698                                 if ($set{'id'} =~ m/0{40}/) {
4699                                         $set{'id'} = $set{'from_id'};
4700                                 }
4701                                 if ($set{'id'} =~ m/0{40}/) {
4702                                         next;
4703                                 }
4704                                 push @files, \%set;
4705                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4706                                 if (%co) {
4707                                         if ($alternate) {
4708                                                 print "<tr class=\"dark\">\n";
4709                                         } else {
4710                                                 print "<tr class=\"light\">\n";
4711                                         }
4712                                         $alternate ^= 1;
4713                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4714                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4715                                               "<td>" .
4716                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4717                                                       -class => "list subject"},
4718                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4719                                         while (my $setref = shift @files) {
4720                                                 my %set = %$setref;
4721                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4722                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4723                                                               -class => "list"},
4724                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4725                                                       "<br/>\n";
4726                                         }
4727                                         print "</td>\n" .
4728                                               "<td class=\"link\">" .
4729                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4730                                               " | " .
4731                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4732                                         print "</td>\n" .
4733                                               "</tr>\n";
4734                                 }
4735                                 %co = parse_commit($1);
4736                         }
4737                 }
4738                 close $fd;
4739
4740                 print "</table>\n";
4741         }
4742         git_footer_html();
4743 }
4744
4745 sub git_search_help {
4746         git_header_html();
4747         git_print_page_nav('','', $hash,$hash,$hash);
4748         print <<EOT;
4749 <dl>
4750 <dt><b>commit</b></dt>
4751 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4752 <dt><b>author</b></dt>
4753 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4754 <dt><b>committer</b></dt>
4755 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4756 EOT
4757         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4758         if ($have_pickaxe) {
4759                 print <<EOT;
4760 <dt><b>pickaxe</b></dt>
4761 <dd>All commits that caused the string to appear or disappear from any file (changes that
4762 added, removed or "modified" the string) will be listed. This search can take a while and
4763 takes a lot of strain on the server, so please use it wisely.</dd>
4764 EOT
4765         }
4766         print "</dl>\n";
4767         git_footer_html();
4768 }
4769
4770 sub git_shortlog {
4771         my $head = git_get_head_hash($project);
4772         if (!defined $hash) {
4773                 $hash = $head;
4774         }
4775         if (!defined $page) {
4776                 $page = 0;
4777         }
4778         my $refs = git_get_references();
4779
4780         my @commitlist = parse_commits($hash, 101, (100 * $page));
4781
4782         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4783         my $next_link = '';
4784         if ($#commitlist >= 100) {
4785                 $next_link =
4786                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4787                                  -accesskey => "n", -title => "Alt-n"}, "next");
4788         }
4789
4790         git_header_html();
4791         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4792         git_print_header_div('summary', $project);
4793
4794         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4795
4796         git_footer_html();
4797 }
4798
4799 ## ......................................................................
4800 ## feeds (RSS, Atom; OPML)
4801
4802 sub git_feed {
4803         my $format = shift || 'atom';
4804         my ($have_blame) = gitweb_check_feature('blame');
4805
4806         # Atom: http://www.atomenabled.org/developers/syndication/
4807         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4808         if ($format ne 'rss' && $format ne 'atom') {
4809                 die_error(undef, "Unknown web feed format");
4810         }
4811
4812         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4813         my $head = $hash || 'HEAD';
4814         my @commitlist = parse_commits($head, 150);
4815
4816         my %latest_commit;
4817         my %latest_date;
4818         my $content_type = "application/$format+xml";
4819         if (defined $cgi->http('HTTP_ACCEPT') &&
4820                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4821                 # browser (feed reader) prefers text/xml
4822                 $content_type = 'text/xml';
4823         }
4824         if (defined($commitlist[0])) {
4825                 %latest_commit = %{$commitlist[0]};
4826                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4827                 print $cgi->header(
4828                         -type => $content_type,
4829                         -charset => 'utf-8',
4830                         -last_modified => $latest_date{'rfc2822'});
4831         } else {
4832                 print $cgi->header(
4833                         -type => $content_type,
4834                         -charset => 'utf-8');
4835         }
4836
4837         # Optimization: skip generating the body if client asks only
4838         # for Last-Modified date.
4839         return if ($cgi->request_method() eq 'HEAD');
4840
4841         # header variables
4842         my $title = "$site_name - $project/$action";
4843         my $feed_type = 'log';
4844         if (defined $hash) {
4845                 $title .= " - '$hash'";
4846                 $feed_type = 'branch log';
4847                 if (defined $file_name) {
4848                         $title .= " :: $file_name";
4849                         $feed_type = 'history';
4850                 }
4851         } elsif (defined $file_name) {
4852                 $title .= " - $file_name";
4853                 $feed_type = 'history';
4854         }
4855         $title .= " $feed_type";
4856         my $descr = git_get_project_description($project);
4857         if (defined $descr) {
4858                 $descr = esc_html($descr);
4859         } else {
4860                 $descr = "$project " .
4861                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4862                          " feed";
4863         }
4864         my $owner = git_get_project_owner($project);
4865         $owner = esc_html($owner);
4866
4867         #header
4868         my $alt_url;
4869         if (defined $file_name) {
4870                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4871         } elsif (defined $hash) {
4872                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4873         } else {
4874                 $alt_url = href(-full=>1, action=>"summary");
4875         }
4876         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4877         if ($format eq 'rss') {
4878                 print <<XML;
4879 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4880 <channel>
4881 XML
4882                 print "<title>$title</title>\n" .
4883                       "<link>$alt_url</link>\n" .
4884                       "<description>$descr</description>\n" .
4885                       "<language>en</language>\n";
4886         } elsif ($format eq 'atom') {
4887                 print <<XML;
4888 <feed xmlns="http://www.w3.org/2005/Atom">
4889 XML
4890                 print "<title>$title</title>\n" .
4891                       "<subtitle>$descr</subtitle>\n" .
4892                       '<link rel="alternate" type="text/html" href="' .
4893                       $alt_url . '" />' . "\n" .
4894                       '<link rel="self" type="' . $content_type . '" href="' .
4895                       $cgi->self_url() . '" />' . "\n" .
4896                       "<id>" . href(-full=>1) . "</id>\n" .
4897                       # use project owner for feed author
4898                       "<author><name>$owner</name></author>\n";
4899                 if (defined $favicon) {
4900                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4901                 }
4902                 if (defined $logo_url) {
4903                         # not twice as wide as tall: 72 x 27 pixels
4904                         print "<logo>" . esc_url($logo) . "</logo>\n";
4905                 }
4906                 if (! %latest_date) {
4907                         # dummy date to keep the feed valid until commits trickle in:
4908                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4909                 } else {
4910                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4911                 }
4912         }
4913
4914         # contents
4915         for (my $i = 0; $i <= $#commitlist; $i++) {
4916                 my %co = %{$commitlist[$i]};
4917                 my $commit = $co{'id'};
4918                 # we read 150, we always show 30 and the ones more recent than 48 hours
4919                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4920                         last;
4921                 }
4922                 my %cd = parse_date($co{'author_epoch'});
4923
4924                 # get list of changed files
4925                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4926                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4927                         or next;
4928                 my @difftree = map { chomp; $_ } <$fd>;
4929                 close $fd
4930                         or next;
4931
4932                 # print element (entry, item)
4933                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4934                 if ($format eq 'rss') {
4935                         print "<item>\n" .
4936                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4937                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4938                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4939                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4940                               "<link>$co_url</link>\n" .
4941                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4942                               "<content:encoded>" .
4943                               "<![CDATA[\n";
4944                 } elsif ($format eq 'atom') {
4945                         print "<entry>\n" .
4946                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4947                               "<updated>$cd{'iso-8601'}</updated>\n" .
4948                               "<author>\n" .
4949                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4950                         if ($co{'author_email'}) {
4951                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4952                         }
4953                         print "</author>\n" .
4954                               # use committer for contributor
4955                               "<contributor>\n" .
4956                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4957                         if ($co{'committer_email'}) {
4958                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4959                         }
4960                         print "</contributor>\n" .
4961                               "<published>$cd{'iso-8601'}</published>\n" .
4962                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4963                               "<id>$co_url</id>\n" .
4964                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4965                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4966                 }
4967                 my $comment = $co{'comment'};
4968                 print "<pre>\n";
4969                 foreach my $line (@$comment) {
4970                         $line = esc_html($line);
4971                         print "$line\n";
4972                 }
4973                 print "</pre><ul>\n";
4974                 foreach my $difftree_line (@difftree) {
4975                         my %difftree = parse_difftree_raw_line($difftree_line);
4976                         next if !$difftree{'from_id'};
4977
4978                         my $file = $difftree{'file'} || $difftree{'to_file'};
4979
4980                         print "<li>" .
4981                               "[" .
4982                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4983                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4984                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4985                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4986                                       -title => "diff"}, 'D');
4987                         if ($have_blame) {
4988                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4989                                                              file_name=>$file, hash_base=>$commit),
4990                                               -title => "blame"}, 'B');
4991                         }
4992                         # if this is not a feed of a file history
4993                         if (!defined $file_name || $file_name ne $file) {
4994                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4995                                                              file_name=>$file, hash=>$commit),
4996                                               -title => "history"}, 'H');
4997                         }
4998                         $file = esc_path($file);
4999                         print "] ".
5000                               "$file</li>\n";
5001                 }
5002                 if ($format eq 'rss') {
5003                         print "</ul>]]>\n" .
5004                               "</content:encoded>\n" .
5005                               "</item>\n";
5006                 } elsif ($format eq 'atom') {
5007                         print "</ul>\n</div>\n" .
5008                               "</content>\n" .
5009                               "</entry>\n";
5010                 }
5011         }
5012
5013         # end of feed
5014         if ($format eq 'rss') {
5015                 print "</channel>\n</rss>\n";
5016         }       elsif ($format eq 'atom') {
5017                 print "</feed>\n";
5018         }
5019 }
5020
5021 sub git_rss {
5022         git_feed('rss');
5023 }
5024
5025 sub git_atom {
5026         git_feed('atom');
5027 }
5028
5029 sub git_opml {
5030         my @list = git_get_projects_list();
5031
5032         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5033         print <<XML;
5034 <?xml version="1.0" encoding="utf-8"?>
5035 <opml version="1.0">
5036 <head>
5037   <title>$site_name OPML Export</title>
5038 </head>
5039 <body>
5040 <outline text="git RSS feeds">
5041 XML
5042
5043         foreach my $pr (@list) {
5044                 my %proj = %$pr;
5045                 my $head = git_get_head_hash($proj{'path'});
5046                 if (!defined $head) {
5047                         next;
5048                 }
5049                 $git_dir = "$projectroot/$proj{'path'}";
5050                 my %co = parse_commit($head);
5051                 if (!%co) {
5052                         next;
5053                 }
5054
5055                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5056                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5057                 my $html = "$my_url?p=$proj{'path'};a=summary";
5058                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5059         }
5060         print <<XML;
5061 </outline>
5062 </body>
5063 </opml>
5064 XML
5065 }