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 # fs traversing limit for getting project list
  39 # the number is relative to the projectroot
  40 our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri || "/";
  44
  45 # string of the home link on top of all pages
  46 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48 # name of your site or organization to appear in page titles
  49 # replace this with something more descriptive for clearer bookmarks
  50 our $site_name = "++GITWEB_SITENAME++"
  51                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53 # filename of html text to include at top of each page
  54 our $site_header = "++GITWEB_SITE_HEADER++";
  55 # html text to include at home page
  56 our $home_text = "++GITWEB_HOMETEXT++";
  57 # filename of html text to include at bottom of each page
  58 our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60 # URI of stylesheets
  61 our @stylesheets = ("++GITWEB_CSS++");
  62 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63 our $stylesheet = undef;
  64
  65 # URI of GIT logo (72x27 size)
  66 our $logo = "++GITWEB_LOGO++";
  67 # URI of GIT favicon, assumed to be image/png type
  68 our $favicon = "++GITWEB_FAVICON++";
  69
  70 # URI and label (title) of GIT logo link
  71 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  72 #our $logo_label = "git documentation";
  73 our $logo_url = "http://git.or.cz/";
  74 our $logo_label = "git homepage";
  75
  76 # source of projects list
  77 our $projects_list = "++GITWEB_LIST++";
  78
  79 # the width (in characters) of the projects list "Description" column
  80 our $projects_list_description_width = 25;
  81
  82 # default order of projects list
  83 # valid values are none, project, descr, owner, and age
  84 our $default_projects_order = "project";
  85
  86 # show repository only if this file exists
  87 # (only effective if this variable evaluates to true)
  88 our $export_ok = "++GITWEB_EXPORT_OK++";
  89
  90 # only allow viewing of repositories also shown on the overview page
  91 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  92
  93 # list of git base URLs used for URL to where fetch project from,
  94 # i.e. full URL is "$git_base_url/$project"
  95 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  96
  97 # default blob_plain mimetype and default charset for text/plain blob
  98 our $default_blob_plain_mimetype = 'text/plain';
  99 our $default_text_plain_charset  = undef;
 100
 101 # file to use for guessing MIME types before trying /etc/mime.types
 102 # (relative to the current git repository)
 103 our $mimetypes_file = undef;
 104
 105 # assume this charset if line contains non-UTF-8 characters;
 106 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 107 # for which encoding all byte sequences are valid, for example
 108 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 109 # could be even 'utf-8' for the old behavior)
 110 our $fallback_encoding = 'latin1';
 111
 112 # rename detection options for git-diff and git-diff-tree
 113 # - default is '-M', with the cost proportional to
 114 #   (number of removed files) * (number of new files).
 115 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 116 #   (number of changed files + number of removed files) * (number of new files)
 117 # - even more costly is '-C', '--find-copies-harder' with cost
 118 #   (number of files in the original tree) * (number of new files)
 119 # - one might want to include '-B' option, e.g. '-B', '-M'
 120 our @diff_opts = ('-M'); # taken from git_commit
 121
 122 # information about snapshot formats that gitweb is capable of serving
 123 our %known_snapshot_formats = (
 124         # name => {
 125         #       'display' => display name,
 126         #       'type' => mime type,
 127         #       'suffix' => filename suffix,
 128         #       'format' => --format for git-archive,
 129         #       'compressor' => [compressor command and arguments]
 130         #                       (array reference, optional)}
 131         #
 132         'tgz' => {
 133                 'display' => 'tar.gz',
 134                 'type' => 'application/x-gzip',
 135                 'suffix' => '.tar.gz',
 136                 'format' => 'tar',
 137                 'compressor' => ['gzip']},
 138
 139         'tbz2' => {
 140                 'display' => 'tar.bz2',
 141                 'type' => 'application/x-bzip2',
 142                 'suffix' => '.tar.bz2',
 143                 'format' => 'tar',
 144                 'compressor' => ['bzip2']},
 145
 146         'zip' => {
 147                 'display' => 'zip',
 148                 'type' => 'application/x-zip',
 149                 'suffix' => '.zip',
 150                 'format' => 'zip'},
 151 );
 152
 153 # Aliases so we understand old gitweb.snapshot values in repository
 154 # configuration.
 155 our %known_snapshot_format_aliases = (
 156         'gzip'  => 'tgz',
 157         'bzip2' => 'tbz2',
 158
 159         # backward compatibility: legacy gitweb config support
 160         'x-gzip' => undef, 'gz' => undef,
 161         'x-bzip2' => undef, 'bz2' => undef,
 162         'x-zip' => undef, '' => undef,
 163 );
 164
 165 # You define site-wide feature defaults here; override them with
 166 # $GITWEB_CONFIG as necessary.
 167 our %feature = (
 168         # feature => {
 169         #       'sub' => feature-sub (subroutine),
 170         #       'override' => allow-override (boolean),
 171         #       'default' => [ default options...] (array reference)}
 172         #
 173         # if feature is overridable (it means that allow-override has true value),
 174         # then feature-sub will be called with default options as parameters;
 175         # return value of feature-sub indicates if to enable specified feature
 176         #
 177         # if there is no 'sub' key (no feature-sub), then feature cannot be
 178         # overriden
 179         #
 180         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 181
 182         # Enable the 'blame' blob view, showing the last commit that modified
 183         # each line in the file. This can be very CPU-intensive.
 184
 185         # To enable system wide have in $GITWEB_CONFIG
 186         # $feature{'blame'}{'default'} = [1];
 187         # To have project specific config enable override in $GITWEB_CONFIG
 188         # $feature{'blame'}{'override'} = 1;
 189         # and in project config gitweb.blame = 0|1;
 190         'blame' => {
 191                 'sub' => \&feature_blame,
 192                 'override' => 0,
 193                 'default' => [0]},
 194
 195         # Enable the 'snapshot' link, providing a compressed archive of any
 196         # tree. This can potentially generate high traffic if you have large
 197         # project.
 198
 199         # Value is a list of formats defined in %known_snapshot_formats that
 200         # you wish to offer.
 201         # To disable system wide have in $GITWEB_CONFIG
 202         # $feature{'snapshot'}{'default'} = [];
 203         # To have project specific config enable override in $GITWEB_CONFIG
 204         # $feature{'snapshot'}{'override'} = 1;
 205         # and in project config, a comma-separated list of formats or "none"
 206         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 207         'snapshot' => {
 208                 'sub' => \&feature_snapshot,
 209                 'override' => 0,
 210                 'default' => ['tgz']},
 211
 212         # Enable text search, which will list the commits which match author,
 213         # committer or commit text to a given string.  Enabled by default.
 214         # Project specific override is not supported.
 215         'search' => {
 216                 'override' => 0,
 217                 'default' => [1]},
 218
 219         # Enable grep search, which will list the files in currently selected
 220         # tree containing the given string. Enabled by default. This can be
 221         # potentially CPU-intensive, of course.
 222
 223         # To enable system wide have in $GITWEB_CONFIG
 224         # $feature{'grep'}{'default'} = [1];
 225         # To have project specific config enable override in $GITWEB_CONFIG
 226         # $feature{'grep'}{'override'} = 1;
 227         # and in project config gitweb.grep = 0|1;
 228         'grep' => {
 229                 'override' => 0,
 230                 'default' => [1]},
 231
 232         # Enable the pickaxe search, which will list the commits that modified
 233         # a given string in a file. This can be practical and quite faster
 234         # alternative to 'blame', but still potentially CPU-intensive.
 235
 236         # To enable system wide have in $GITWEB_CONFIG
 237         # $feature{'pickaxe'}{'default'} = [1];
 238         # To have project specific config enable override in $GITWEB_CONFIG
 239         # $feature{'pickaxe'}{'override'} = 1;
 240         # and in project config gitweb.pickaxe = 0|1;
 241         'pickaxe' => {
 242                 'sub' => \&feature_pickaxe,
 243                 'override' => 0,
 244                 'default' => [1]},
 245
 246         # Make gitweb use an alternative format of the URLs which can be
 247         # more readable and natural-looking: project name is embedded
 248         # directly in the path and the query string contains other
 249         # auxiliary information. All gitweb installations recognize
 250         # URL in either format; this configures in which formats gitweb
 251         # generates links.
 252
 253         # To enable system wide have in $GITWEB_CONFIG
 254         # $feature{'pathinfo'}{'default'} = [1];
 255         # Project specific override is not supported.
 256
 257         # Note that you will need to change the default location of CSS,
 258         # favicon, logo and possibly other files to an absolute URL. Also,
 259         # if gitweb.cgi serves as your indexfile, you will need to force
 260         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 261         'pathinfo' => {
 262                 'override' => 0,
 263                 'default' => [0]},
 264
 265         # Make gitweb consider projects in project root subdirectories
 266         # to be forks of existing projects. Given project $projname.git,
 267         # projects matching $projname/*.git will not be shown in the main
 268         # projects list, instead a '+' mark will be added to $projname
 269         # there and a 'forks' view will be enabled for the project, listing
 270         # all the forks. If project list is taken from a file, forks have
 271         # to be listed after the main project.
 272
 273         # To enable system wide have in $GITWEB_CONFIG
 274         # $feature{'forks'}{'default'} = [1];
 275         # Project specific override is not supported.
 276         'forks' => {
 277                 'override' => 0,
 278                 'default' => [0]},
 279 );
 280
 281 sub gitweb_check_feature {
 282         my ($name) = @_;
 283         return unless exists $feature{$name};
 284         my ($sub, $override, @defaults) = (
 285                 $feature{$name}{'sub'},
 286                 $feature{$name}{'override'},
 287                 @{$feature{$name}{'default'}});
 288         if (!$override) { return @defaults; }
 289         if (!defined $sub) {
 290                 warn "feature $name is not overrideable";
 291                 return @defaults;
 292         }
 293         return $sub->(@defaults);
 294 }
 295
 296 sub feature_blame {
 297         my ($val) = git_get_project_config('blame', '--bool');
 298
 299         if ($val eq 'true') {
 300                 return 1;
 301         } elsif ($val eq 'false') {
 302                 return 0;
 303         }
 304
 305         return $_[0];
 306 }
 307
 308 sub feature_snapshot {
 309         my (@fmts) = @_;
 310
 311         my ($val) = git_get_project_config('snapshot');
 312
 313         if ($val) {
 314                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 315         }
 316
 317         return @fmts;
 318 }
 319
 320 sub feature_grep {
 321         my ($val) = git_get_project_config('grep', '--bool');
 322
 323         if ($val eq 'true') {
 324                 return (1);
 325         } elsif ($val eq 'false') {
 326                 return (0);
 327         }
 328
 329         return ($_[0]);
 330 }
 331
 332 sub feature_pickaxe {
 333         my ($val) = git_get_project_config('pickaxe', '--bool');
 334
 335         if ($val eq 'true') {
 336                 return (1);
 337         } elsif ($val eq 'false') {
 338                 return (0);
 339         }
 340
 341         return ($_[0]);
 342 }
 343
 344 # checking HEAD file with -e is fragile if the repository was
 345 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 346 # and then pruned.
 347 sub check_head_link {
 348         my ($dir) = @_;
 349         my $headfile = "$dir/HEAD";
 350         return ((-e $headfile) ||
 351                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 352 }
 353
 354 sub check_export_ok {
 355         my ($dir) = @_;
 356         return (check_head_link($dir) &&
 357                 (!$export_ok || -e "$dir/$export_ok"));
 358 }
 359
 360 # process alternate names for backward compatibility
 361 # filter out unsupported (unknown) snapshot formats
 362 sub filter_snapshot_fmts {
 363         my @fmts = @_;
 364
 365         @fmts = map {
 366                 exists $known_snapshot_format_aliases{$_} ?
 367                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 368         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 369
 370 }
 371
 372 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 373 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 374
 375 # version of the core git binary
 376 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 377
 378 $projects_list ||= $projectroot;
 379
 380 # ======================================================================
 381 # input validation and dispatch
 382 our $action = $cgi->param('a');
 383 if (defined $action) {
 384         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 385                 die_error(undef, "Invalid action parameter");
 386         }
 387 }
 388
 389 # parameters which are pathnames
 390 our $project = $cgi->param('p');
 391 if (defined $project) {
 392         if (!validate_pathname($project) ||
 393             !(-d "$projectroot/$project") ||
 394             !check_head_link("$projectroot/$project") ||
 395             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 396             ($strict_export && !project_in_list($project))) {
 397                 undef $project;
 398                 die_error(undef, "No such project");
 399         }
 400 }
 401
 402 our $file_name = $cgi->param('f');
 403 if (defined $file_name) {
 404         if (!validate_pathname($file_name)) {
 405                 die_error(undef, "Invalid file parameter");
 406         }
 407 }
 408
 409 our $file_parent = $cgi->param('fp');
 410 if (defined $file_parent) {
 411         if (!validate_pathname($file_parent)) {
 412                 die_error(undef, "Invalid file parent parameter");
 413         }
 414 }
 415
 416 # parameters which are refnames
 417 our $hash = $cgi->param('h');
 418 if (defined $hash) {
 419         if (!validate_refname($hash)) {
 420                 die_error(undef, "Invalid hash parameter");
 421         }
 422 }
 423
 424 our $hash_parent = $cgi->param('hp');
 425 if (defined $hash_parent) {
 426         if (!validate_refname($hash_parent)) {
 427                 die_error(undef, "Invalid hash parent parameter");
 428         }
 429 }
 430
 431 our $hash_base = $cgi->param('hb');
 432 if (defined $hash_base) {
 433         if (!validate_refname($hash_base)) {
 434                 die_error(undef, "Invalid hash base parameter");
 435         }
 436 }
 437
 438 my %allowed_options = (
 439         "--no-merges" => [ qw(rss atom log shortlog history) ],
 440 );
 441
 442 our @extra_options = $cgi->param('opt');
 443 if (defined @extra_options) {
 444         foreach my $opt (@extra_options) {
 445                 if (not exists $allowed_options{$opt}) {
 446                         die_error(undef, "Invalid option parameter");
 447                 }
 448                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 449                         die_error(undef, "Invalid option parameter for this action");
 450                 }
 451         }
 452 }
 453
 454 our $hash_parent_base = $cgi->param('hpb');
 455 if (defined $hash_parent_base) {
 456         if (!validate_refname($hash_parent_base)) {
 457                 die_error(undef, "Invalid hash parent base parameter");
 458         }
 459 }
 460
 461 # other parameters
 462 our $page = $cgi->param('pg');
 463 if (defined $page) {
 464         if ($page =~ m/[^0-9]/) {
 465                 die_error(undef, "Invalid page parameter");
 466         }
 467 }
 468
 469 our $searchtype = $cgi->param('st');
 470 if (defined $searchtype) {
 471         if ($searchtype =~ m/[^a-z]/) {
 472                 die_error(undef, "Invalid searchtype parameter");
 473         }
 474 }
 475
 476 our $searchtext = $cgi->param('s');
 477 our $search_regexp;
 478 if (defined $searchtext) {
 479         if (length($searchtext) < 2) {
 480                 die_error(undef, "At least two characters are required for search parameter");
 481         }
 482         $search_regexp = quotemeta $searchtext;
 483 }
 484
 485 # now read PATH_INFO and use it as alternative to parameters
 486 sub evaluate_path_info {
 487         return if defined $project;
 488         my $path_info = $ENV{"PATH_INFO"};
 489         return if !$path_info;
 490         $path_info =~ s,^/+,,;
 491         return if !$path_info;
 492         # find which part of PATH_INFO is project
 493         $project = $path_info;
 494         $project =~ s,/+$,,;
 495         while ($project && !check_head_link("$projectroot/$project")) {
 496                 $project =~ s,/*[^/]*$,,;
 497         }
 498         # validate project
 499         $project = validate_pathname($project);
 500         if (!$project ||
 501             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 502             ($strict_export && !project_in_list($project))) {
 503                 undef $project;
 504                 return;
 505         }
 506         # do not change any parameters if an action is given using the query string
 507         return if $action;
 508         $path_info =~ s,^$project/*,,;
 509         my ($refname, $pathname) = split(/:/, $path_info, 2);
 510         if (defined $pathname) {
 511                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 512                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 513                 $pathname =~ s,^/+,,;
 514                 if (!$pathname || substr($pathname, -1) eq "/") {
 515                         $action  ||= "tree";
 516                         $pathname =~ s,/$,,;
 517                 } else {
 518                         $action  ||= "blob_plain";
 519                 }
 520                 $hash_base ||= validate_refname($refname);
 521                 $file_name ||= validate_pathname($pathname);
 522         } elsif (defined $refname) {
 523                 # we got "project.git/branch"
 524                 $action ||= "shortlog";
 525                 $hash   ||= validate_refname($refname);
 526         }
 527 }
 528 evaluate_path_info();
 529
 530 # path to the current git repository
 531 our $git_dir;
 532 $git_dir = "$projectroot/$project" if $project;
 533
 534 # dispatch
 535 my %actions = (
 536         "blame" => \&git_blame2,
 537         "blobdiff" => \&git_blobdiff,
 538         "blobdiff_plain" => \&git_blobdiff_plain,
 539         "blob" => \&git_blob,
 540         "blob_plain" => \&git_blob_plain,
 541         "commitdiff" => \&git_commitdiff,
 542         "commitdiff_plain" => \&git_commitdiff_plain,
 543         "commit" => \&git_commit,
 544         "forks" => \&git_forks,
 545         "heads" => \&git_heads,
 546         "history" => \&git_history,
 547         "log" => \&git_log,
 548         "rss" => \&git_rss,
 549         "atom" => \&git_atom,
 550         "search" => \&git_search,
 551         "search_help" => \&git_search_help,
 552         "shortlog" => \&git_shortlog,
 553         "summary" => \&git_summary,
 554         "tag" => \&git_tag,
 555         "tags" => \&git_tags,
 556         "tree" => \&git_tree,
 557         "snapshot" => \&git_snapshot,
 558         "object" => \&git_object,
 559         # those below don't need $project
 560         "opml" => \&git_opml,
 561         "project_list" => \&git_project_list,
 562         "project_index" => \&git_project_index,
 563 );
 564
 565 if (!defined $action) {
 566         if (defined $hash) {
 567                 $action = git_get_type($hash);
 568         } elsif (defined $hash_base && defined $file_name) {
 569                 $action = git_get_type("$hash_base:$file_name");
 570         } elsif (defined $project) {
 571                 $action = 'summary';
 572         } else {
 573                 $action = 'project_list';
 574         }
 575 }
 576 if (!defined($actions{$action})) {
 577         die_error(undef, "Unknown action");
 578 }
 579 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 580     !$project) {
 581         die_error(undef, "Project needed");
 582 }
 583 $actions{$action}->();
 584 exit;
 585
 586 ## ======================================================================
 587 ## action links
 588
 589 sub href(%) {
 590         my %params = @_;
 591         # default is to use -absolute url() i.e. $my_uri
 592         my $href = $params{-full} ? $my_url : $my_uri;
 593
 594         # XXX: Warning: If you touch this, check the search form for updating,
 595         # too.
 596
 597         my @mapping = (
 598                 project => "p",
 599                 action => "a",
 600                 file_name => "f",
 601                 file_parent => "fp",
 602                 hash => "h",
 603                 hash_parent => "hp",
 604                 hash_base => "hb",
 605                 hash_parent_base => "hpb",
 606                 page => "pg",
 607                 order => "o",
 608                 searchtext => "s",
 609                 searchtype => "st",
 610                 snapshot_format => "sf",
 611                 extra_options => "opt",
 612         );
 613         my %mapping = @mapping;
 614
 615         $params{'project'} = $project unless exists $params{'project'};
 616
 617         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 618         if ($use_pathinfo) {
 619                 # use PATH_INFO for project name
 620                 $href .= "/$params{'project'}" if defined $params{'project'};
 621                 delete $params{'project'};
 622
 623                 # Summary just uses the project path URL
 624                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 625                         delete $params{'action'};
 626                 }
 627         }
 628
 629         # now encode the parameters explicitly
 630         my @result = ();
 631         for (my $i = 0; $i < @mapping; $i += 2) {
 632                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 633                 if (defined $params{$name}) {
 634                         if (ref($params{$name}) eq "ARRAY") {
 635                                 foreach my $par (@{$params{$name}}) {
 636                                         push @result, $symbol . "=" . esc_param($par);
 637                                 }
 638                         } else {
 639                                 push @result, $symbol . "=" . esc_param($params{$name});
 640                         }
 641                 }
 642         }
 643         $href .= "?" . join(';', @result) if scalar @result;
 644
 645         return $href;
 646 }
 647
 648
 649 ## ======================================================================
 650 ## validation, quoting/unquoting and escaping
 651
 652 sub validate_pathname {
 653         my $input = shift || return undef;
 654
 655         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 656         # at the beginning, at the end, and between slashes.
 657         # also this catches doubled slashes
 658         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 659                 return undef;
 660         }
 661         # no null characters
 662         if ($input =~ m!\0!) {
 663                 return undef;
 664         }
 665         return $input;
 666 }
 667
 668 sub validate_refname {
 669         my $input = shift || return undef;
 670
 671         # textual hashes are O.K.
 672         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 673                 return $input;
 674         }
 675         # it must be correct pathname
 676         $input = validate_pathname($input)
 677                 or return undef;
 678         # restrictions on ref name according to git-check-ref-format
 679         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 680                 return undef;
 681         }
 682         return $input;
 683 }
 684
 685 # decode sequences of octets in utf8 into Perl's internal form,
 686 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 687 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 688 sub to_utf8 {
 689         my $str = shift;
 690         my $res;
 691         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 692         if (defined $res) {
 693                 return $res;
 694         } else {
 695                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 696         }
 697 }
 698
 699 # quote unsafe chars, but keep the slash, even when it's not
 700 # correct, but quoted slashes look too horrible in bookmarks
 701 sub esc_param {
 702         my $str = shift;
 703         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 704         $str =~ s/\+/%2B/g;
 705         $str =~ s/ /\+/g;
 706         return $str;
 707 }
 708
 709 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 710 sub esc_url {
 711         my $str = shift;
 712         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 713         $str =~ s/\+/%2B/g;
 714         $str =~ s/ /\+/g;
 715         return $str;
 716 }
 717
 718 # replace invalid utf8 character with SUBSTITUTION sequence
 719 sub esc_html ($;%) {
 720         my $str = shift;
 721         my %opts = @_;
 722
 723         $str = to_utf8($str);
 724         $str = $cgi->escapeHTML($str);
 725         if ($opts{'-nbsp'}) {
 726                 $str =~ s/ /&nbsp;/g;
 727         }
 728         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 729         return $str;
 730 }
 731
 732 # quote control characters and escape filename to HTML
 733 sub esc_path {
 734         my $str = shift;
 735         my %opts = @_;
 736
 737         $str = to_utf8($str);
 738         $str = $cgi->escapeHTML($str);
 739         if ($opts{'-nbsp'}) {
 740                 $str =~ s/ /&nbsp;/g;
 741         }
 742         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 743         return $str;
 744 }
 745
 746 # Make control characters "printable", using character escape codes (CEC)
 747 sub quot_cec {
 748         my $cntrl = shift;
 749         my %es = ( # character escape codes, aka escape sequences
 750                    "\t" => '\t',   # tab            (HT)
 751                    "\n" => '\n',   # line feed      (LF)
 752                    "\r" => '\r',   # carrige return (CR)
 753                    "\f" => '\f',   # form feed      (FF)
 754                    "\b" => '\b',   # backspace      (BS)
 755                    "\a" => '\a',   # alarm (bell)   (BEL)
 756                    "\e" => '\e',   # escape         (ESC)
 757                    "\013" => '\v', # vertical tab   (VT)
 758                    "\000" => '\0', # nul character  (NUL)
 759                    );
 760         my $chr = ( (exists $es{$cntrl})
 761                     ? $es{$cntrl}
 762                     : sprintf('\%03o', ord($cntrl)) );
 763         return "<span class=\"cntrl\">$chr</span>";
 764 }
 765
 766 # Alternatively use unicode control pictures codepoints,
 767 # Unicode "printable representation" (PR)
 768 sub quot_upr {
 769         my $cntrl = shift;
 770         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 771         return "<span class=\"cntrl\">$chr</span>";
 772 }
 773
 774 # git may return quoted and escaped filenames
 775 sub unquote {
 776         my $str = shift;
 777
 778         sub unq {
 779                 my $seq = shift;
 780                 my %es = ( # character escape codes, aka escape sequences
 781                         't' => "\t",   # tab            (HT, TAB)
 782                         'n' => "\n",   # newline        (NL)
 783                         'r' => "\r",   # return         (CR)
 784                         'f' => "\f",   # form feed      (FF)
 785                         'b' => "\b",   # backspace      (BS)
 786                         'a' => "\a",   # alarm (bell)   (BEL)
 787                         'e' => "\e",   # escape         (ESC)
 788                         'v' => "\013", # vertical tab   (VT)
 789                 );
 790
 791                 if ($seq =~ m/^[0-7]{1,3}$/) {
 792                         # octal char sequence
 793                         return chr(oct($seq));
 794                 } elsif (exists $es{$seq}) {
 795                         # C escape sequence, aka character escape code
 796                         return $es{$seq}
 797                 }
 798                 # quoted ordinary character
 799                 return $seq;
 800         }
 801
 802         if ($str =~ m/^"(.*)"$/) {
 803                 # needs unquoting
 804                 $str = $1;
 805                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 806         }
 807         return $str;
 808 }
 809
 810 # escape tabs (convert tabs to spaces)
 811 sub untabify {
 812         my $line = shift;
 813
 814         while ((my $pos = index($line, "\t")) != -1) {
 815                 if (my $count = (8 - ($pos % 8))) {
 816                         my $spaces = ' ' x $count;
 817                         $line =~ s/\t/$spaces/;
 818                 }
 819         }
 820
 821         return $line;
 822 }
 823
 824 sub project_in_list {
 825         my $project = shift;
 826         my @list = git_get_projects_list();
 827         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 828 }
 829
 830 ## ----------------------------------------------------------------------
 831 ## HTML aware string manipulation
 832
 833 sub chop_str {
 834         my $str = shift;
 835         my $len = shift;
 836         my $add_len = shift || 10;
 837
 838         # allow only $len chars, but don't cut a word if it would fit in $add_len
 839         # if it doesn't fit, cut it if it's still longer than the dots we would add
 840         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 841         my $body = $1;
 842         my $tail = $2;
 843         if (length($tail) > 4) {
 844                 $tail = " ...";
 845                 $body =~ s/&[^;]*$//; # remove chopped character entities
 846         }
 847         return "$body$tail";
 848 }
 849
 850 # takes the same arguments as chop_str, but also wraps a <span> around the
 851 # result with a title attribute if it does get chopped. Additionally, the
 852 # string is HTML-escaped.
 853 sub chop_and_escape_str {
 854         my $str = shift;
 855         my $len = shift;
 856         my $add_len = shift || 10;
 857
 858         my $chopped = chop_str($str, $len, $add_len);
 859         if ($chopped eq $str) {
 860                 return esc_html($chopped);
 861         } else {
 862                 return qq{<span title="} . esc_html($str) . qq{">} .
 863                         esc_html($chopped) . qq{</span>};
 864         }
 865 }
 866
 867 ## ----------------------------------------------------------------------
 868 ## functions returning short strings
 869
 870 # CSS class for given age value (in seconds)
 871 sub age_class {
 872         my $age = shift;
 873
 874         if (!defined $age) {
 875                 return "noage";
 876         } elsif ($age < 60*60*2) {
 877                 return "age0";
 878         } elsif ($age < 60*60*24*2) {
 879                 return "age1";
 880         } else {
 881                 return "age2";
 882         }
 883 }
 884
 885 # convert age in seconds to "nn units ago" string
 886 sub age_string {
 887         my $age = shift;
 888         my $age_str;
 889
 890         if ($age > 60*60*24*365*2) {
 891                 $age_str = (int $age/60/60/24/365);
 892                 $age_str .= " years ago";
 893         } elsif ($age > 60*60*24*(365/12)*2) {
 894                 $age_str = int $age/60/60/24/(365/12);
 895                 $age_str .= " months ago";
 896         } elsif ($age > 60*60*24*7*2) {
 897                 $age_str = int $age/60/60/24/7;
 898                 $age_str .= " weeks ago";
 899         } elsif ($age > 60*60*24*2) {
 900                 $age_str = int $age/60/60/24;
 901                 $age_str .= " days ago";
 902         } elsif ($age > 60*60*2) {
 903                 $age_str = int $age/60/60;
 904                 $age_str .= " hours ago";
 905         } elsif ($age > 60*2) {
 906                 $age_str = int $age/60;
 907                 $age_str .= " min ago";
 908         } elsif ($age > 2) {
 909                 $age_str = int $age;
 910                 $age_str .= " sec ago";
 911         } else {
 912                 $age_str .= " right now";
 913         }
 914         return $age_str;
 915 }
 916
 917 use constant {
 918         S_IFINVALID => 0030000,
 919         S_IFGITLINK => 0160000,
 920 };
 921
 922 # submodule/subproject, a commit object reference
 923 sub S_ISGITLINK($) {
 924         my $mode = shift;
 925
 926         return (($mode & S_IFMT) == S_IFGITLINK)
 927 }
 928
 929 # convert file mode in octal to symbolic file mode string
 930 sub mode_str {
 931         my $mode = oct shift;
 932
 933         if (S_ISGITLINK($mode)) {
 934                 return 'm---------';
 935         } elsif (S_ISDIR($mode & S_IFMT)) {
 936                 return 'drwxr-xr-x';
 937         } elsif (S_ISLNK($mode)) {
 938                 return 'lrwxrwxrwx';
 939         } elsif (S_ISREG($mode)) {
 940                 # git cares only about the executable bit
 941                 if ($mode & S_IXUSR) {
 942                         return '-rwxr-xr-x';
 943                 } else {
 944                         return '-rw-r--r--';
 945                 };
 946         } else {
 947                 return '----------';
 948         }
 949 }
 950
 951 # convert file mode in octal to file type string
 952 sub file_type {
 953         my $mode = shift;
 954
 955         if ($mode !~ m/^[0-7]+$/) {
 956                 return $mode;
 957         } else {
 958                 $mode = oct $mode;
 959         }
 960
 961         if (S_ISGITLINK($mode)) {
 962                 return "submodule";
 963         } elsif (S_ISDIR($mode & S_IFMT)) {
 964                 return "directory";
 965         } elsif (S_ISLNK($mode)) {
 966                 return "symlink";
 967         } elsif (S_ISREG($mode)) {
 968                 return "file";
 969         } else {
 970                 return "unknown";
 971         }
 972 }
 973
 974 # convert file mode in octal to file type description string
 975 sub file_type_long {
 976         my $mode = shift;
 977
 978         if ($mode !~ m/^[0-7]+$/) {
 979                 return $mode;
 980         } else {
 981                 $mode = oct $mode;
 982         }
 983
 984         if (S_ISGITLINK($mode)) {
 985                 return "submodule";
 986         } elsif (S_ISDIR($mode & S_IFMT)) {
 987                 return "directory";
 988         } elsif (S_ISLNK($mode)) {
 989                 return "symlink";
 990         } elsif (S_ISREG($mode)) {
 991                 if ($mode & S_IXUSR) {
 992                         return "executable";
 993                 } else {
 994                         return "file";
 995                 };
 996         } else {
 997                 return "unknown";
 998         }
 999 }
1000
1001
1002 ## ----------------------------------------------------------------------
1003 ## functions returning short HTML fragments, or transforming HTML fragments
1004 ## which don't belong to other sections
1005
1006 # format line of commit message.
1007 sub format_log_line_html {
1008         my $line = shift;
1009
1010         $line = esc_html($line, -nbsp=>1);
1011         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1012                 my $hash_text = $1;
1013                 my $link =
1014                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1015                                 -class => "text"}, $hash_text);
1016                 $line =~ s/$hash_text/$link/;
1017         }
1018         return $line;
1019 }
1020
1021 # format marker of refs pointing to given object
1022 sub format_ref_marker {
1023         my ($refs, $id) = @_;
1024         my $markers = '';
1025
1026         if (defined $refs->{$id}) {
1027                 foreach my $ref (@{$refs->{$id}}) {
1028                         my ($type, $name) = qw();
1029                         # e.g. tags/v2.6.11 or heads/next
1030                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1031                                 $type = $1;
1032                                 $name = $2;
1033                         } else {
1034                                 $type = "ref";
1035                                 $name = $ref;
1036                         }
1037
1038                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
1039                                     esc_html($name) . "</span>";
1040                 }
1041         }
1042
1043         if ($markers) {
1044                 return ' <span class="refs">'. $markers . '</span>';
1045         } else {
1046                 return "";
1047         }
1048 }
1049
1050 # format, perhaps shortened and with markers, title line
1051 sub format_subject_html {
1052         my ($long, $short, $href, $extra) = @_;
1053         $extra = '' unless defined($extra);
1054
1055         if (length($short) < length($long)) {
1056                 return $cgi->a({-href => $href, -class => "list subject",
1057                                 -title => to_utf8($long)},
1058                        esc_html($short) . $extra);
1059         } else {
1060                 return $cgi->a({-href => $href, -class => "list subject"},
1061                        esc_html($long)  . $extra);
1062         }
1063 }
1064
1065 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1066 sub format_git_diff_header_line {
1067         my $line = shift;
1068         my $diffinfo = shift;
1069         my ($from, $to) = @_;
1070
1071         if ($diffinfo->{'nparents'}) {
1072                 # combined diff
1073                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1074                 if ($to->{'href'}) {
1075                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1076                                          esc_path($to->{'file'}));
1077                 } else { # file was deleted (no href)
1078                         $line .= esc_path($to->{'file'});
1079                 }
1080         } else {
1081                 # "ordinary" diff
1082                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1083                 if ($from->{'href'}) {
1084                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1085                                          'a/' . esc_path($from->{'file'}));
1086                 } else { # file was added (no href)
1087                         $line .= 'a/' . esc_path($from->{'file'});
1088                 }
1089                 $line .= ' ';
1090                 if ($to->{'href'}) {
1091                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1092                                          'b/' . esc_path($to->{'file'}));
1093                 } else { # file was deleted
1094                         $line .= 'b/' . esc_path($to->{'file'});
1095                 }
1096         }
1097
1098         return "<div class=\"diff header\">$line</div>\n";
1099 }
1100
1101 # format extended diff header line, before patch itself
1102 sub format_extended_diff_header_line {
1103         my $line = shift;
1104         my $diffinfo = shift;
1105         my ($from, $to) = @_;
1106
1107         # match <path>
1108         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1109                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1110                                        esc_path($from->{'file'}));
1111         }
1112         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1113                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1114                                  esc_path($to->{'file'}));
1115         }
1116         # match single <mode>
1117         if ($line =~ m/\s(\d{6})$/) {
1118                 $line .= '<span class="info"> (' .
1119                          file_type_long($1) .
1120                          ')</span>';
1121         }
1122         # match <hash>
1123         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1124                 # can match only for combined diff
1125                 $line = 'index ';
1126                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1127                         if ($from->{'href'}[$i]) {
1128                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1129                                                   -class=>"hash"},
1130                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1131                         } else {
1132                                 $line .= '0' x 7;
1133                         }
1134                         # separator
1135                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1136                 }
1137                 $line .= '..';
1138                 if ($to->{'href'}) {
1139                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1140                                          substr($diffinfo->{'to_id'},0,7));
1141                 } else {
1142                         $line .= '0' x 7;
1143                 }
1144
1145         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1146                 # can match only for ordinary diff
1147                 my ($from_link, $to_link);
1148                 if ($from->{'href'}) {
1149                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1150                                              substr($diffinfo->{'from_id'},0,7));
1151                 } else {
1152                         $from_link = '0' x 7;
1153                 }
1154                 if ($to->{'href'}) {
1155                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1156                                            substr($diffinfo->{'to_id'},0,7));
1157                 } else {
1158                         $to_link = '0' x 7;
1159                 }
1160                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1161                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1162         }
1163
1164         return $line . "<br/>\n";
1165 }
1166
1167 # format from-file/to-file diff header
1168 sub format_diff_from_to_header {
1169         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1170         my $line;
1171         my $result = '';
1172
1173         $line = $from_line;
1174         #assert($line =~ m/^---/) if DEBUG;
1175         # no extra formatting for "^--- /dev/null"
1176         if (! $diffinfo->{'nparents'}) {
1177                 # ordinary (single parent) diff
1178                 if ($line =~ m!^--- "?a/!) {
1179                         if ($from->{'href'}) {
1180                                 $line = '--- a/' .
1181                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1182                                                 esc_path($from->{'file'}));
1183                         } else {
1184                                 $line = '--- a/' .
1185                                         esc_path($from->{'file'});
1186                         }
1187                 }
1188                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1189
1190         } else {
1191                 # combined diff (merge commit)
1192                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1193                         if ($from->{'href'}[$i]) {
1194                                 $line = '--- ' .
1195                                         $cgi->a({-href=>href(action=>"blobdiff",
1196                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1197                                                              hash_parent_base=>$parents[$i],
1198                                                              file_parent=>$from->{'file'}[$i],
1199                                                              hash=>$diffinfo->{'to_id'},
1200                                                              hash_base=>$hash,
1201                                                              file_name=>$to->{'file'}),
1202                                                  -class=>"path",
1203                                                  -title=>"diff" . ($i+1)},
1204                                                 $i+1) .
1205                                         '/' .
1206                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1207                                                 esc_path($from->{'file'}[$i]));
1208                         } else {
1209                                 $line = '--- /dev/null';
1210                         }
1211                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1212                 }
1213         }
1214
1215         $line = $to_line;
1216         #assert($line =~ m/^\+\+\+/) if DEBUG;
1217         # no extra formatting for "^+++ /dev/null"
1218         if ($line =~ m!^\+\+\+ "?b/!) {
1219                 if ($to->{'href'}) {
1220                         $line = '+++ b/' .
1221                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1222                                         esc_path($to->{'file'}));
1223                 } else {
1224                         $line = '+++ b/' .
1225                                 esc_path($to->{'file'});
1226                 }
1227         }
1228         $result .= qq!<div class="diff to_file">$line</div>\n!;
1229
1230         return $result;
1231 }
1232
1233 # create note for patch simplified by combined diff
1234 sub format_diff_cc_simplified {
1235         my ($diffinfo, @parents) = @_;
1236         my $result = '';
1237
1238         $result .= "<div class=\"diff header\">" .
1239                    "diff --cc ";
1240         if (!is_deleted($diffinfo)) {
1241                 $result .= $cgi->a({-href => href(action=>"blob",
1242                                                   hash_base=>$hash,
1243                                                   hash=>$diffinfo->{'to_id'},
1244                                                   file_name=>$diffinfo->{'to_file'}),
1245                                     -class => "path"},
1246                                    esc_path($diffinfo->{'to_file'}));
1247         } else {
1248                 $result .= esc_path($diffinfo->{'to_file'});
1249         }
1250         $result .= "</div>\n" . # class="diff header"
1251                    "<div class=\"diff nodifferences\">" .
1252                    "Simple merge" .
1253                    "</div>\n"; # class="diff nodifferences"
1254
1255         return $result;
1256 }
1257
1258 # format patch (diff) line (not to be used for diff headers)
1259 sub format_diff_line {
1260         my $line = shift;
1261         my ($from, $to) = @_;
1262         my $diff_class = "";
1263
1264         chomp $line;
1265
1266         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1267                 # combined diff
1268                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1269                 if ($line =~ m/^\@{3}/) {
1270                         $diff_class = " chunk_header";
1271                 } elsif ($line =~ m/^\\/) {
1272                         $diff_class = " incomplete";
1273                 } elsif ($prefix =~ tr/+/+/) {
1274                         $diff_class = " add";
1275                 } elsif ($prefix =~ tr/-/-/) {
1276                         $diff_class = " rem";
1277                 }
1278         } else {
1279                 # assume ordinary diff
1280                 my $char = substr($line, 0, 1);
1281                 if ($char eq '+') {
1282                         $diff_class = " add";
1283                 } elsif ($char eq '-') {
1284                         $diff_class = " rem";
1285                 } elsif ($char eq '@') {
1286                         $diff_class = " chunk_header";
1287                 } elsif ($char eq "\\") {
1288                         $diff_class = " incomplete";
1289                 }
1290         }
1291         $line = untabify($line);
1292         if ($from && $to && $line =~ m/^\@{2} /) {
1293                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1294                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1295
1296                 $from_lines = 0 unless defined $from_lines;
1297                 $to_lines   = 0 unless defined $to_lines;
1298
1299                 if ($from->{'href'}) {
1300                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1301                                              -class=>"list"}, $from_text);
1302                 }
1303                 if ($to->{'href'}) {
1304                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1305                                              -class=>"list"}, $to_text);
1306                 }
1307                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1308                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1309                 return "<div class=\"diff$diff_class\">$line</div>\n";
1310         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1311                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1312                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1313
1314                 @from_text = split(' ', $ranges);
1315                 for (my $i = 0; $i < @from_text; ++$i) {
1316                         ($from_start[$i], $from_nlines[$i]) =
1317                                 (split(',', substr($from_text[$i], 1)), 0);
1318                 }
1319
1320                 $to_text   = pop @from_text;
1321                 $to_start  = pop @from_start;
1322                 $to_nlines = pop @from_nlines;
1323
1324                 $line = "<span class=\"chunk_info\">$prefix ";
1325                 for (my $i = 0; $i < @from_text; ++$i) {
1326                         if ($from->{'href'}[$i]) {
1327                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1328                                                   -class=>"list"}, $from_text[$i]);
1329                         } else {
1330                                 $line .= $from_text[$i];
1331                         }
1332                         $line .= " ";
1333                 }
1334                 if ($to->{'href'}) {
1335                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1336                                           -class=>"list"}, $to_text);
1337                 } else {
1338                         $line .= $to_text;
1339                 }
1340                 $line .= " $prefix</span>" .
1341                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1342                 return "<div class=\"diff$diff_class\">$line</div>\n";
1343         }
1344         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1345 }
1346
1347 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1348 # linked.  Pass the hash of the tree/commit to snapshot.
1349 sub format_snapshot_links {
1350         my ($hash) = @_;
1351         my @snapshot_fmts = gitweb_check_feature('snapshot');
1352         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1353         my $num_fmts = @snapshot_fmts;
1354         if ($num_fmts > 1) {
1355                 # A parenthesized list of links bearing format names.
1356                 # e.g. "snapshot (_tar.gz_ _zip_)"
1357                 return "snapshot (" . join(' ', map
1358                         $cgi->a({
1359                                 -href => href(
1360                                         action=>"snapshot",
1361                                         hash=>$hash,
1362                                         snapshot_format=>$_
1363                                 )
1364                         }, $known_snapshot_formats{$_}{'display'})
1365                 , @snapshot_fmts) . ")";
1366         } elsif ($num_fmts == 1) {
1367                 # A single "snapshot" link whose tooltip bears the format name.
1368                 # i.e. "_snapshot_"
1369                 my ($fmt) = @snapshot_fmts;
1370                 return
1371                         $cgi->a({
1372                                 -href => href(
1373                                         action=>"snapshot",
1374                                         hash=>$hash,
1375                                         snapshot_format=>$fmt
1376                                 ),
1377                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1378                         }, "snapshot");
1379         } else { # $num_fmts == 0
1380                 return undef;
1381         }
1382 }
1383
1384 ## ----------------------------------------------------------------------
1385 ## git utility subroutines, invoking git commands
1386
1387 # returns path to the core git executable and the --git-dir parameter as list
1388 sub git_cmd {
1389         return $GIT, '--git-dir='.$git_dir;
1390 }
1391
1392 # returns path to the core git executable and the --git-dir parameter as string
1393 sub git_cmd_str {
1394         return join(' ', git_cmd());
1395 }
1396
1397 # get HEAD ref of given project as hash
1398 sub git_get_head_hash {
1399         my $project = shift;
1400         my $o_git_dir = $git_dir;
1401         my $retval = undef;
1402         $git_dir = "$projectroot/$project";
1403         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1404                 my $head = <$fd>;
1405                 close $fd;
1406                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1407                         $retval = $1;
1408                 }
1409         }
1410         if (defined $o_git_dir) {
1411                 $git_dir = $o_git_dir;
1412         }
1413         return $retval;
1414 }
1415
1416 # get type of given object
1417 sub git_get_type {
1418         my $hash = shift;
1419
1420         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1421         my $type = <$fd>;
1422         close $fd or return;
1423         chomp $type;
1424         return $type;
1425 }
1426
1427 sub git_get_project_config {
1428         my ($key, $type) = @_;
1429
1430         return unless ($key);
1431         $key =~ s/^gitweb\.//;
1432         return if ($key =~ m/\W/);
1433
1434         my @x = (git_cmd(), 'config');
1435         if (defined $type) { push @x, $type; }
1436         push @x, "--get";
1437         push @x, "gitweb.$key";
1438         my $val = qx(@x);
1439         chomp $val;
1440         return ($val);
1441 }
1442
1443 # get hash of given path at given ref
1444 sub git_get_hash_by_path {
1445         my $base = shift;
1446         my $path = shift || return undef;
1447         my $type = shift;
1448
1449         $path =~ s,/+$,,;
1450
1451         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1452                 or die_error(undef, "Open git-ls-tree failed");
1453         my $line = <$fd>;
1454         close $fd or return undef;
1455
1456         if (!defined $line) {
1457                 # there is no tree or hash given by $path at $base
1458                 return undef;
1459         }
1460
1461         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1462         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1463         if (defined $type && $type ne $2) {
1464                 # type doesn't match
1465                 return undef;
1466         }
1467         return $3;
1468 }
1469
1470 # get path of entry with given hash at given tree-ish (ref)
1471 # used to get 'from' filename for combined diff (merge commit) for renames
1472 sub git_get_path_by_hash {
1473         my $base = shift || return;
1474         my $hash = shift || return;
1475
1476         local $/ = "\0";
1477
1478         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1479                 or return undef;
1480         while (my $line = <$fd>) {
1481                 chomp $line;
1482
1483                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1484                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1485                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1486                         close $fd;
1487                         return $1;
1488                 }
1489         }
1490         close $fd;
1491         return undef;
1492 }
1493
1494 ## ......................................................................
1495 ## git utility functions, directly accessing git repository
1496
1497 sub git_get_project_description {
1498         my $path = shift;
1499
1500         open my $fd, "$projectroot/$path/description" or return undef;
1501         my $descr = <$fd>;
1502         close $fd;
1503         if (defined $descr) {
1504                 chomp $descr;
1505         }
1506         return $descr;
1507 }
1508
1509 sub git_get_project_url_list {
1510         my $path = shift;
1511
1512         open my $fd, "$projectroot/$path/cloneurl" or return;
1513         my @git_project_url_list = map { chomp; $_ } <$fd>;
1514         close $fd;
1515
1516         return wantarray ? @git_project_url_list : \@git_project_url_list;
1517 }
1518
1519 sub git_get_projects_list {
1520         my ($filter) = @_;
1521         my @list;
1522
1523         $filter ||= '';
1524         $filter =~ s/\.git$//;
1525
1526         my ($check_forks) = gitweb_check_feature('forks');
1527
1528         if (-d $projects_list) {
1529                 # search in directory
1530                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1531                 # remove the trailing "/"
1532                 $dir =~ s!/+$!!;
1533                 my $pfxlen = length("$dir");
1534                 my $pfxdepth = ($dir =~ tr!/!!);
1535
1536                 File::Find::find({
1537                         follow_fast => 1, # follow symbolic links
1538                         follow_skip => 2, # ignore duplicates
1539                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1540                         wanted => sub {
1541                                 # skip project-list toplevel, if we get it.
1542                                 return if (m!^[/.]$!);
1543                                 # only directories can be git repositories
1544                                 return unless (-d $_);
1545                                 # don't traverse too deep (Find is super slow on os x)
1546                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1547                                         $File::Find::prune = 1;
1548                                         return;
1549                                 }
1550
1551                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1552                                 # we check related file in $projectroot
1553                                 if ($check_forks and $subdir =~ m#/.#) {
1554                                         $File::Find::prune = 1;
1555                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1556                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1557                                         $File::Find::prune = 1;
1558                                 }
1559                         },
1560                 }, "$dir");
1561
1562         } elsif (-f $projects_list) {
1563                 # read from file(url-encoded):
1564                 # 'git%2Fgit.git Linus+Torvalds'
1565                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1566                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1567                 my %paths;
1568                 open my ($fd), $projects_list or return;
1569         PROJECT:
1570                 while (my $line = <$fd>) {
1571                         chomp $line;
1572                         my ($path, $owner) = split ' ', $line;
1573                         $path = unescape($path);
1574                         $owner = unescape($owner);
1575                         if (!defined $path) {
1576                                 next;
1577                         }
1578                         if ($filter ne '') {
1579                                 # looking for forks;
1580                                 my $pfx = substr($path, 0, length($filter));
1581                                 if ($pfx ne $filter) {
1582                                         next PROJECT;
1583                                 }
1584                                 my $sfx = substr($path, length($filter));
1585                                 if ($sfx !~ /^\/.*\.git$/) {
1586                                         next PROJECT;
1587                                 }
1588                         } elsif ($check_forks) {
1589                         PATH:
1590                                 foreach my $filter (keys %paths) {
1591                                         # looking for forks;
1592                                         my $pfx = substr($path, 0, length($filter));
1593                                         if ($pfx ne $filter) {
1594                                                 next PATH;
1595                                         }
1596                                         my $sfx = substr($path, length($filter));
1597                                         if ($sfx !~ /^\/.*\.git$/) {
1598                                                 next PATH;
1599                                         }
1600                                         # is a fork, don't include it in
1601                                         # the list
1602                                         next PROJECT;
1603                                 }
1604                         }
1605                         if (check_export_ok("$projectroot/$path")) {
1606                                 my $pr = {
1607                                         path => $path,
1608                                         owner => to_utf8($owner),
1609                                 };
1610                                 push @list, $pr;
1611                                 (my $forks_path = $path) =~ s/\.git$//;
1612                                 $paths{$forks_path}++;
1613                         }
1614                 }
1615                 close $fd;
1616         }
1617         return @list;
1618 }
1619
1620 our $gitweb_project_owner = undef;
1621 sub git_get_project_list_from_file {
1622
1623         return if (defined $gitweb_project_owner);
1624
1625         $gitweb_project_owner = {};
1626         # read from file (url-encoded):
1627         # 'git%2Fgit.git Linus+Torvalds'
1628         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1629         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1630         if (-f $projects_list) {
1631                 open (my $fd , $projects_list);
1632                 while (my $line = <$fd>) {
1633                         chomp $line;
1634                         my ($pr, $ow) = split ' ', $line;
1635                         $pr = unescape($pr);
1636                         $ow = unescape($ow);
1637                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1638                 }
1639                 close $fd;
1640         }
1641 }
1642
1643 sub git_get_project_owner {
1644         my $project = shift;
1645         my $owner;
1646
1647         return undef unless $project;
1648
1649         if (!defined $gitweb_project_owner) {
1650                 git_get_project_list_from_file();
1651         }
1652
1653         if (exists $gitweb_project_owner->{$project}) {
1654                 $owner = $gitweb_project_owner->{$project};
1655         }
1656         if (!defined $owner) {
1657                 $owner = get_file_owner("$projectroot/$project");
1658         }
1659
1660         return $owner;
1661 }
1662
1663 sub git_get_last_activity {
1664         my ($path) = @_;
1665         my $fd;
1666
1667         $git_dir = "$projectroot/$path";
1668         open($fd, "-|", git_cmd(), 'for-each-ref',
1669              '--format=%(committer)',
1670              '--sort=-committerdate',
1671              '--count=1',
1672              'refs/heads') or return;
1673         my $most_recent = <$fd>;
1674         close $fd or return;
1675         if (defined $most_recent &&
1676             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1677                 my $timestamp = $1;
1678                 my $age = time - $timestamp;
1679                 return ($age, age_string($age));
1680         }
1681         return (undef, undef);
1682 }
1683
1684 sub git_get_references {
1685         my $type = shift || "";
1686         my %refs;
1687         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1688         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1689         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1690                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1691                 or return;
1692
1693         while (my $line = <$fd>) {
1694                 chomp $line;
1695                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1696                         if (defined $refs{$1}) {
1697                                 push @{$refs{$1}}, $2;
1698                         } else {
1699                                 $refs{$1} = [ $2 ];
1700                         }
1701                 }
1702         }
1703         close $fd or return;
1704         return \%refs;
1705 }
1706
1707 sub git_get_rev_name_tags {
1708         my $hash = shift || return undef;
1709
1710         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1711                 or return;
1712         my $name_rev = <$fd>;
1713         close $fd;
1714
1715         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1716                 return $1;
1717         } else {
1718                 # catches also '$hash undefined' output
1719                 return undef;
1720         }
1721 }
1722
1723 ## ----------------------------------------------------------------------
1724 ## parse to hash functions
1725
1726 sub parse_date {
1727         my $epoch = shift;
1728         my $tz = shift || "-0000";
1729
1730         my %date;
1731         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1732         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1733         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1734         $date{'hour'} = $hour;
1735         $date{'minute'} = $min;
1736         $date{'mday'} = $mday;
1737         $date{'day'} = $days[$wday];
1738         $date{'month'} = $months[$mon];
1739         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1740                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1741         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1742                              $mday, $months[$mon], $hour ,$min;
1743         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1744                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1745
1746         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1747         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1748         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1749         $date{'hour_local'} = $hour;
1750         $date{'minute_local'} = $min;
1751         $date{'tz_local'} = $tz;
1752         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1753                                   1900+$year, $mon+1, $mday,
1754                                   $hour, $min, $sec, $tz);
1755         return %date;
1756 }
1757
1758 sub parse_tag {
1759         my $tag_id = shift;
1760         my %tag;
1761         my @comment;
1762
1763         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1764         $tag{'id'} = $tag_id;
1765         while (my $line = <$fd>) {
1766                 chomp $line;
1767                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1768                         $tag{'object'} = $1;
1769                 } elsif ($line =~ m/^type (.+)$/) {
1770                         $tag{'type'} = $1;
1771                 } elsif ($line =~ m/^tag (.+)$/) {
1772                         $tag{'name'} = $1;
1773                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1774                         $tag{'author'} = $1;
1775                         $tag{'epoch'} = $2;
1776                         $tag{'tz'} = $3;
1777                 } elsif ($line =~ m/--BEGIN/) {
1778                         push @comment, $line;
1779                         last;
1780                 } elsif ($line eq "") {
1781                         last;
1782                 }
1783         }
1784         push @comment, <$fd>;
1785         $tag{'comment'} = \@comment;
1786         close $fd or return;
1787         if (!defined $tag{'name'}) {
1788                 return
1789         };
1790         return %tag
1791 }
1792
1793 sub parse_commit_text {
1794         my ($commit_text, $withparents) = @_;
1795         my @commit_lines = split '\n', $commit_text;
1796         my %co;
1797
1798         pop @commit_lines; # Remove '\0'
1799
1800         if (! @commit_lines) {
1801                 return;
1802         }
1803
1804         my $header = shift @commit_lines;
1805         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1806                 return;
1807         }
1808         ($co{'id'}, my @parents) = split ' ', $header;
1809         while (my $line = shift @commit_lines) {
1810                 last if $line eq "\n";
1811                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1812                         $co{'tree'} = $1;
1813                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1814                         push @parents, $1;
1815                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1816                         $co{'author'} = $1;
1817                         $co{'author_epoch'} = $2;
1818                         $co{'author_tz'} = $3;
1819                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1820                                 $co{'author_name'}  = $1;
1821                                 $co{'author_email'} = $2;
1822                         } else {
1823                                 $co{'author_name'} = $co{'author'};
1824                         }
1825                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1826                         $co{'committer'} = $1;
1827                         $co{'committer_epoch'} = $2;
1828                         $co{'committer_tz'} = $3;
1829                         $co{'committer_name'} = $co{'committer'};
1830                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1831                                 $co{'committer_name'}  = $1;
1832                                 $co{'committer_email'} = $2;
1833                         } else {
1834                                 $co{'committer_name'} = $co{'committer'};
1835                         }
1836                 }
1837         }
1838         if (!defined $co{'tree'}) {
1839                 return;
1840         };
1841         $co{'parents'} = \@parents;
1842         $co{'parent'} = $parents[0];
1843
1844         foreach my $title (@commit_lines) {
1845                 $title =~ s/^    //;
1846                 if ($title ne "") {
1847                         $co{'title'} = chop_str($title, 80, 5);
1848                         # remove leading stuff of merges to make the interesting part visible
1849                         if (length($title) > 50) {
1850                                 $title =~ s/^Automatic //;
1851                                 $title =~ s/^merge (of|with) /Merge ... /i;
1852                                 if (length($title) > 50) {
1853                                         $title =~ s/(http|rsync):\/\///;
1854                                 }
1855                                 if (length($title) > 50) {
1856                                         $title =~ s/(master|www|rsync)\.//;
1857                                 }
1858                                 if (length($title) > 50) {
1859                                         $title =~ s/kernel.org:?//;
1860                                 }
1861                                 if (length($title) > 50) {
1862                                         $title =~ s/\/pub\/scm//;
1863                                 }
1864                         }
1865                         $co{'title_short'} = chop_str($title, 50, 5);
1866                         last;
1867                 }
1868         }
1869         if ($co{'title'} eq "") {
1870                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1871         }
1872         # remove added spaces
1873         foreach my $line (@commit_lines) {
1874                 $line =~ s/^    //;
1875         }
1876         $co{'comment'} = \@commit_lines;
1877
1878         my $age = time - $co{'committer_epoch'};
1879         $co{'age'} = $age;
1880         $co{'age_string'} = age_string($age);
1881         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1882         if ($age > 60*60*24*7*2) {
1883                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1884                 $co{'age_string_age'} = $co{'age_string'};
1885         } else {
1886                 $co{'age_string_date'} = $co{'age_string'};
1887                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1888         }
1889         return %co;
1890 }
1891
1892 sub parse_commit {
1893         my ($commit_id) = @_;
1894         my %co;
1895
1896         local $/ = "\0";
1897
1898         open my $fd, "-|", git_cmd(), "rev-list",
1899                 "--parents",
1900                 "--header",
1901                 "--max-count=1",
1902                 $commit_id,
1903                 "--",
1904                 or die_error(undef, "Open git-rev-list failed");
1905         %co = parse_commit_text(<$fd>, 1);
1906         close $fd;
1907
1908         return %co;
1909 }
1910
1911 sub parse_commits {
1912         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1913         my @cos;
1914
1915         $maxcount ||= 1;
1916         $skip ||= 0;
1917
1918         local $/ = "\0";
1919
1920         open my $fd, "-|", git_cmd(), "rev-list",
1921                 "--header",
1922                 ($arg ? ($arg) : ()),
1923                 ("--max-count=" . $maxcount),
1924                 ("--skip=" . $skip),
1925                 @extra_options,
1926                 $commit_id,
1927                 "--",
1928                 ($filename ? ($filename) : ())
1929                 or die_error(undef, "Open git-rev-list failed");
1930         while (my $line = <$fd>) {
1931                 my %co = parse_commit_text($line);
1932                 push @cos, \%co;
1933         }
1934         close $fd;
1935
1936         return wantarray ? @cos : \@cos;
1937 }
1938
1939 # parse ref from ref_file, given by ref_id, with given type
1940 sub parse_ref {
1941         my $ref_file = shift;
1942         my $ref_id = shift;
1943         my $type = shift || git_get_type($ref_id);
1944         my %ref_item;
1945
1946         $ref_item{'type'} = $type;
1947         $ref_item{'id'} = $ref_id;
1948         $ref_item{'epoch'} = 0;
1949         $ref_item{'age'} = "unknown";
1950         if ($type eq "tag") {
1951                 my %tag = parse_tag($ref_id);
1952                 $ref_item{'comment'} = $tag{'comment'};
1953                 if ($tag{'type'} eq "commit") {
1954                         my %co = parse_commit($tag{'object'});
1955                         $ref_item{'epoch'} = $co{'committer_epoch'};
1956                         $ref_item{'age'} = $co{'age_string'};
1957                 } elsif (defined($tag{'epoch'})) {
1958                         my $age = time - $tag{'epoch'};
1959                         $ref_item{'epoch'} = $tag{'epoch'};
1960                         $ref_item{'age'} = age_string($age);
1961                 }
1962                 $ref_item{'reftype'} = $tag{'type'};
1963                 $ref_item{'name'} = $tag{'name'};
1964                 $ref_item{'refid'} = $tag{'object'};
1965         } elsif ($type eq "commit"){
1966                 my %co = parse_commit($ref_id);
1967                 $ref_item{'reftype'} = "commit";
1968                 $ref_item{'name'} = $ref_file;
1969                 $ref_item{'title'} = $co{'title'};
1970                 $ref_item{'refid'} = $ref_id;
1971                 $ref_item{'epoch'} = $co{'committer_epoch'};
1972                 $ref_item{'age'} = $co{'age_string'};
1973         } else {
1974                 $ref_item{'reftype'} = $type;
1975                 $ref_item{'name'} = $ref_file;
1976                 $ref_item{'refid'} = $ref_id;
1977         }
1978
1979         return %ref_item;
1980 }
1981
1982 # parse line of git-diff-tree "raw" output
1983 sub parse_difftree_raw_line {
1984         my $line = shift;
1985         my %res;
1986
1987         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1988         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1989         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1990                 $res{'from_mode'} = $1;
1991                 $res{'to_mode'} = $2;
1992                 $res{'from_id'} = $3;
1993                 $res{'to_id'} = $4;
1994                 $res{'status'} = $res{'status_str'} = $5;
1995                 $res{'similarity'} = $6;
1996                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1997                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1998                 } else {
1999                         $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2000                 }
2001         }
2002         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2003         # combined diff (for merge commit)
2004         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2005                 $res{'nparents'}  = length($1);
2006                 $res{'from_mode'} = [ split(' ', $2) ];
2007                 $res{'to_mode'} = pop @{$res{'from_mode'}};
2008                 $res{'from_id'} = [ split(' ', $3) ];
2009                 $res{'to_id'} = pop @{$res{'from_id'}};
2010                 $res{'status_str'} = $4;
2011                 $res{'status'} = [ split('', $4) ];
2012                 $res{'to_file'} = unquote($5);
2013         }
2014         # 'c512b523472485aef4fff9e57b229d9d243c967f'
2015         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2016                 $res{'commit'} = $1;
2017         }
2018
2019         return wantarray ? %res : \%res;
2020 }
2021
2022 # wrapper: return parsed line of git-diff-tree "raw" output
2023 # (the argument might be raw line, or parsed info)
2024 sub parsed_difftree_line {
2025         my $line_or_ref = shift;
2026
2027         if (ref($line_or_ref) eq "HASH") {
2028                 # pre-parsed (or generated by hand)
2029                 return $line_or_ref;
2030         } else {
2031                 return parse_difftree_raw_line($line_or_ref);
2032         }
2033 }
2034
2035 # parse line of git-ls-tree output
2036 sub parse_ls_tree_line ($;%) {
2037         my $line = shift;
2038         my %opts = @_;
2039         my %res;
2040
2041         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2042         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2043
2044         $res{'mode'} = $1;
2045         $res{'type'} = $2;
2046         $res{'hash'} = $3;
2047         if ($opts{'-z'}) {
2048                 $res{'name'} = $4;
2049         } else {
2050                 $res{'name'} = unquote($4);
2051         }
2052
2053         return wantarray ? %res : \%res;
2054 }
2055
2056 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2057 sub parse_from_to_diffinfo {
2058         my ($diffinfo, $from, $to, @parents) = @_;
2059
2060         if ($diffinfo->{'nparents'}) {
2061                 # combined diff
2062                 $from->{'file'} = [];
2063                 $from->{'href'} = [];
2064                 fill_from_file_info($diffinfo, @parents)
2065                         unless exists $diffinfo->{'from_file'};
2066                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2067                         $from->{'file'}[$i] =
2068                                 defined $diffinfo->{'from_file'}[$i] ?
2069                                         $diffinfo->{'from_file'}[$i] :
2070                                         $diffinfo->{'to_file'};
2071                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2072                                 $from->{'href'}[$i] = href(action=>"blob",
2073                                                            hash_base=>$parents[$i],
2074                                                            hash=>$diffinfo->{'from_id'}[$i],
2075                                                            file_name=>$from->{'file'}[$i]);
2076                         } else {
2077                                 $from->{'href'}[$i] = undef;
2078                         }
2079                 }
2080         } else {
2081                 # ordinary (not combined) diff
2082                 $from->{'file'} = $diffinfo->{'from_file'};
2083                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2084                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2085                                                hash=>$diffinfo->{'from_id'},
2086                                                file_name=>$from->{'file'});
2087                 } else {
2088                         delete $from->{'href'};
2089                 }
2090         }
2091
2092         $to->{'file'} = $diffinfo->{'to_file'};
2093         if (!is_deleted($diffinfo)) { # file exists in result
2094                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2095                                      hash=>$diffinfo->{'to_id'},
2096                                      file_name=>$to->{'file'});
2097         } else {
2098                 delete $to->{'href'};
2099         }
2100 }
2101
2102 ## ......................................................................
2103 ## parse to array of hashes functions
2104
2105 sub git_get_heads_list {
2106         my $limit = shift;
2107         my @headslist;
2108
2109         open my $fd, '-|', git_cmd(), 'for-each-ref',
2110                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2111                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2112                 'refs/heads'
2113                 or return;
2114         while (my $line = <$fd>) {
2115                 my %ref_item;
2116
2117                 chomp $line;
2118                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2119                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2120                 my ($committer, $epoch, $tz) =
2121                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2122                 $name =~ s!^refs/heads/!!;
2123
2124                 $ref_item{'name'}  = $name;
2125                 $ref_item{'id'}    = $hash;
2126                 $ref_item{'title'} = $title || '(no commit message)';
2127                 $ref_item{'epoch'} = $epoch;
2128                 if ($epoch) {
2129                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2130                 } else {
2131                         $ref_item{'age'} = "unknown";
2132                 }
2133
2134                 push @headslist, \%ref_item;
2135         }
2136         close $fd;
2137
2138         return wantarray ? @headslist : \@headslist;
2139 }
2140
2141 sub git_get_tags_list {
2142         my $limit = shift;
2143         my @tagslist;
2144
2145         open my $fd, '-|', git_cmd(), 'for-each-ref',
2146                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2147                 '--format=%(objectname) %(objecttype) %(refname) '.
2148                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2149                 'refs/tags'
2150                 or return;
2151         while (my $line = <$fd>) {
2152                 my %ref_item;
2153
2154                 chomp $line;
2155                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2156                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2157                 my ($creator, $epoch, $tz) =
2158                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2159                 $name =~ s!^refs/tags/!!;
2160
2161                 $ref_item{'type'} = $type;
2162                 $ref_item{'id'} = $id;
2163                 $ref_item{'name'} = $name;
2164                 if ($type eq "tag") {
2165                         $ref_item{'subject'} = $title;
2166                         $ref_item{'reftype'} = $reftype;
2167                         $ref_item{'refid'}   = $refid;
2168                 } else {
2169                         $ref_item{'reftype'} = $type;
2170                         $ref_item{'refid'}   = $id;
2171                 }
2172
2173                 if ($type eq "tag" || $type eq "commit") {
2174                         $ref_item{'epoch'} = $epoch;
2175                         if ($epoch) {
2176                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2177                         } else {
2178                                 $ref_item{'age'} = "unknown";
2179                         }
2180                 }
2181
2182                 push @tagslist, \%ref_item;
2183         }
2184         close $fd;
2185
2186         return wantarray ? @tagslist : \@tagslist;
2187 }
2188
2189 ## ----------------------------------------------------------------------
2190 ## filesystem-related functions
2191
2192 sub get_file_owner {
2193         my $path = shift;
2194
2195         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2196         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2197         if (!defined $gcos) {
2198                 return undef;
2199         }
2200         my $owner = $gcos;
2201         $owner =~ s/[,;].*$//;
2202         return to_utf8($owner);
2203 }
2204
2205 ## ......................................................................
2206 ## mimetype related functions
2207
2208 sub mimetype_guess_file {
2209         my $filename = shift;
2210         my $mimemap = shift;
2211         -r $mimemap or return undef;
2212
2213         my %mimemap;
2214         open(MIME, $mimemap) or return undef;
2215         while (<MIME>) {
2216                 next if m/^#/; # skip comments
2217                 my ($mime, $exts) = split(/\t+/);
2218                 if (defined $exts) {
2219                         my @exts = split(/\s+/, $exts);
2220                         foreach my $ext (@exts) {
2221                                 $mimemap{$ext} = $mime;
2222                         }
2223                 }
2224         }
2225         close(MIME);
2226
2227         $filename =~ /\.([^.]*)$/;
2228         return $mimemap{$1};
2229 }
2230
2231 sub mimetype_guess {
2232         my $filename = shift;
2233         my $mime;
2234         $filename =~ /\./ or return undef;
2235
2236         if ($mimetypes_file) {
2237                 my $file = $mimetypes_file;
2238                 if ($file !~ m!^/!) { # if it is relative path
2239                         # it is relative to project
2240                         $file = "$projectroot/$project/$file";
2241                 }
2242                 $mime = mimetype_guess_file($filename, $file);
2243         }
2244         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2245         return $mime;
2246 }
2247
2248 sub blob_mimetype {
2249         my $fd = shift;
2250         my $filename = shift;
2251
2252         if ($filename) {
2253                 my $mime = mimetype_guess($filename);
2254                 $mime and return $mime;
2255         }
2256
2257         # just in case
2258         return $default_blob_plain_mimetype unless $fd;
2259
2260         if (-T $fd) {
2261                 return 'text/plain' .
2262                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2263         } elsif (! $filename) {
2264                 return 'application/octet-stream';
2265         } elsif ($filename =~ m/\.png$/i) {
2266                 return 'image/png';
2267         } elsif ($filename =~ m/\.gif$/i) {
2268                 return 'image/gif';
2269         } elsif ($filename =~ m/\.jpe?g$/i) {
2270                 return 'image/jpeg';
2271         } else {
2272                 return 'application/octet-stream';
2273         }
2274 }
2275
2276 ## ======================================================================
2277 ## functions printing HTML: header, footer, error page
2278
2279 sub git_header_html {
2280         my $status = shift || "200 OK";
2281         my $expires = shift;
2282
2283         my $title = "$site_name";
2284         if (defined $project) {
2285                 $title .= " - " . to_utf8($project);
2286                 if (defined $action) {
2287                         $title .= "/$action";
2288                         if (defined $file_name) {
2289                                 $title .= " - " . esc_path($file_name);
2290                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2291                                         $title .= "/";
2292                                 }
2293                         }
2294                 }
2295         }
2296         my $content_type;
2297         # require explicit support from the UA if we are to send the page as
2298         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2299         # we have to do this because MSIE sometimes globs '*/*', pretending to
2300         # support xhtml+xml but choking when it gets what it asked for.
2301         if (defined $cgi->http('HTTP_ACCEPT') &&
2302             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2303             $cgi->Accept('application/xhtml+xml') != 0) {
2304                 $content_type = 'application/xhtml+xml';
2305         } else {
2306                 $content_type = 'text/html';
2307         }
2308         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2309                            -status=> $status, -expires => $expires);
2310         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2311         print <<EOF;
2312 <?xml version="1.0" encoding="utf-8"?>
2313 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2314 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2315 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2316 <!-- git core binaries version $git_version -->
2317 <head>
2318 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2319 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2320 <meta name="robots" content="index, nofollow"/>
2321 <title>$title</title>
2322 EOF
2323 # print out each stylesheet that exist
2324         if (defined $stylesheet) {
2325 #provides backwards capability for those people who define style sheet in a config file
2326                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2327         } else {
2328                 foreach my $stylesheet (@stylesheets) {
2329                         next unless $stylesheet;
2330                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2331                 }
2332         }
2333         if (defined $project) {
2334                 printf('<link rel="alternate" title="%s log RSS feed" '.
2335                        'href="%s" type="application/rss+xml" />'."\n",
2336                        esc_param($project), href(action=>"rss"));
2337                 printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2338                        'href="%s" type="application/rss+xml" />'."\n",
2339                        esc_param($project), href(action=>"rss",
2340                                                  extra_options=>"--no-merges"));
2341                 printf('<link rel="alternate" title="%s log Atom feed" '.
2342                        'href="%s" type="application/atom+xml" />'."\n",
2343                        esc_param($project), href(action=>"atom"));
2344                 printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2345                        'href="%s" type="application/atom+xml" />'."\n",
2346                        esc_param($project), href(action=>"atom",
2347                                                  extra_options=>"--no-merges"));
2348         } else {
2349                 printf('<link rel="alternate" title="%s projects list" '.
2350                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2351                        $site_name, href(project=>undef, action=>"project_index"));
2352                 printf('<link rel="alternate" title="%s projects feeds" '.
2353                        'href="%s" type="text/x-opml"/>'."\n",
2354                        $site_name, href(project=>undef, action=>"opml"));
2355         }
2356         if (defined $favicon) {
2357                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2358         }
2359
2360         print "</head>\n" .
2361               "<body>\n";
2362
2363         if (-f $site_header) {
2364                 open (my $fd, $site_header);
2365                 print <$fd>;
2366                 close $fd;
2367         }
2368
2369         print "<div class=\"page_header\">\n" .
2370               $cgi->a({-href => esc_url($logo_url),
2371                        -title => $logo_label},
2372                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2373         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2374         if (defined $project) {
2375                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2376                 if (defined $action) {
2377                         print " / $action";
2378                 }
2379                 print "\n";
2380         }
2381         print "</div>\n";
2382
2383         my ($have_search) = gitweb_check_feature('search');
2384         if ((defined $project) && ($have_search)) {
2385                 if (!defined $searchtext) {
2386                         $searchtext = "";
2387                 }
2388                 my $search_hash;
2389                 if (defined $hash_base) {
2390                         $search_hash = $hash_base;
2391                 } elsif (defined $hash) {
2392                         $search_hash = $hash;
2393                 } else {
2394                         $search_hash = "HEAD";
2395                 }
2396                 my $action = $my_uri;
2397                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2398                 if ($use_pathinfo) {
2399                         $action .= "/$project";
2400                 } else {
2401                         $cgi->param("p", $project);
2402                 }
2403                 $cgi->param("a", "search");
2404                 $cgi->param("h", $search_hash);
2405                 print $cgi->startform(-method => "get", -action => $action) .
2406                       "<div class=\"search\">\n" .
2407                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2408                       $cgi->hidden(-name => "a") . "\n" .
2409                       $cgi->hidden(-name => "h") . "\n" .
2410                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2411                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2412                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2413                       " search:\n",
2414                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2415                       "</div>" .
2416                       $cgi->end_form() . "\n";
2417         }
2418 }
2419
2420 sub git_footer_html {
2421         print "<div class=\"page_footer\">\n";
2422         if (defined $project) {
2423                 my $descr = git_get_project_description($project);
2424                 if (defined $descr) {
2425                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2426                 }
2427                 print $cgi->a({-href => href(action=>"rss"),
2428                               -class => "rss_logo"}, "RSS") . " ";
2429                 print $cgi->a({-href => href(action=>"atom"),
2430                               -class => "rss_logo"}, "Atom") . "\n";
2431         } else {
2432                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2433                               -class => "rss_logo"}, "OPML") . " ";
2434                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2435                               -class => "rss_logo"}, "TXT") . "\n";
2436         }
2437         print "</div>\n" ;
2438
2439         if (-f $site_footer) {
2440                 open (my $fd, $site_footer);
2441                 print <$fd>;
2442                 close $fd;
2443         }
2444
2445         print "</body>\n" .
2446               "</html>";
2447 }
2448
2449 sub die_error {
2450         my $status = shift || "403 Forbidden";
2451         my $error = shift || "Malformed query, file missing or permission denied";
2452
2453         git_header_html($status);
2454         print <<EOF;
2455 <div class="page_body">
2456 <br /><br />
2457 $status - $error
2458 <br />
2459 </div>
2460 EOF
2461         git_footer_html();
2462         exit;
2463 }
2464
2465 ## ----------------------------------------------------------------------
2466 ## functions printing or outputting HTML: navigation
2467
2468 sub git_print_page_nav {
2469         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2470         $extra = '' if !defined $extra; # pager or formats
2471
2472         my @navs = qw(summary shortlog log commit commitdiff tree);
2473         if ($suppress) {
2474                 @navs = grep { $_ ne $suppress } @navs;
2475         }
2476
2477         my %arg = map { $_ => {action=>$_} } @navs;
2478         if (defined $head) {
2479                 for (qw(commit commitdiff)) {
2480                         $arg{$_}{'hash'} = $head;
2481                 }
2482                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2483                         for (qw(shortlog log)) {
2484                                 $arg{$_}{'hash'} = $head;
2485                         }
2486                 }
2487         }
2488         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2489         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2490
2491         print "<div class=\"page_nav\">\n" .
2492                 (join " | ",
2493                  map { $_ eq $current ?
2494                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2495                  } @navs);
2496         print "<br/>\n$extra<br/>\n" .
2497               "</div>\n";
2498 }
2499
2500 sub format_paging_nav {
2501         my ($action, $hash, $head, $page, $nrevs) = @_;
2502         my $paging_nav;
2503
2504
2505         if ($hash ne $head || $page) {
2506                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2507         } else {
2508                 $paging_nav .= "HEAD";
2509         }
2510
2511         if ($page > 0) {
2512                 $paging_nav .= " &sdot; " .
2513                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2514                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2515         } else {
2516                 $paging_nav .= " &sdot; prev";
2517         }
2518
2519         if ($nrevs >= (100 * ($page+1)-1)) {
2520                 $paging_nav .= " &sdot; " .
2521                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2522                                  -accesskey => "n", -title => "Alt-n"}, "next");
2523         } else {
2524                 $paging_nav .= " &sdot; next";
2525         }
2526
2527         return $paging_nav;
2528 }
2529
2530 ## ......................................................................
2531 ## functions printing or outputting HTML: div
2532
2533 sub git_print_header_div {
2534         my ($action, $title, $hash, $hash_base) = @_;
2535         my %args = ();
2536
2537         $args{'action'} = $action;
2538         $args{'hash'} = $hash if $hash;
2539         $args{'hash_base'} = $hash_base if $hash_base;
2540
2541         print "<div class=\"header\">\n" .
2542               $cgi->a({-href => href(%args), -class => "title"},
2543               $title ? $title : $action) .
2544               "\n</div>\n";
2545 }
2546
2547 #sub git_print_authorship (\%) {
2548 sub git_print_authorship {
2549         my $co = shift;
2550
2551         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2552         print "<div class=\"author_date\">" .
2553               esc_html($co->{'author_name'}) .
2554               " [$ad{'rfc2822'}";
2555         if ($ad{'hour_local'} < 6) {
2556                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2557                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2558         } else {
2559                 printf(" (%02d:%02d %s)",
2560                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2561         }
2562         print "]</div>\n";
2563 }
2564
2565 sub git_print_page_path {
2566         my $name = shift;
2567         my $type = shift;
2568         my $hb = shift;
2569
2570
2571         print "<div class=\"page_path\">";
2572         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2573                       -title => 'tree root'}, to_utf8("[$project]"));
2574         print " / ";
2575         if (defined $name) {
2576                 my @dirname = split '/', $name;
2577                 my $basename = pop @dirname;
2578                 my $fullname = '';
2579
2580                 foreach my $dir (@dirname) {
2581                         $fullname .= ($fullname ? '/' : '') . $dir;
2582                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2583                                                      hash_base=>$hb),
2584                                       -title => $fullname}, esc_path($dir));
2585                         print " / ";
2586                 }
2587                 if (defined $type && $type eq 'blob') {
2588                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2589                                                      hash_base=>$hb),
2590                                       -title => $name}, esc_path($basename));
2591                 } elsif (defined $type && $type eq 'tree') {
2592                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2593                                                      hash_base=>$hb),
2594                                       -title => $name}, esc_path($basename));
2595                         print " / ";
2596                 } else {
2597                         print esc_path($basename);
2598                 }
2599         }
2600         print "<br/></div>\n";
2601 }
2602
2603 # sub git_print_log (\@;%) {
2604 sub git_print_log ($;%) {
2605         my $log = shift;
2606         my %opts = @_;
2607
2608         if ($opts{'-remove_title'}) {
2609                 # remove title, i.e. first line of log
2610                 shift @$log;
2611         }
2612         # remove leading empty lines
2613         while (defined $log->[0] && $log->[0] eq "") {
2614                 shift @$log;
2615         }
2616
2617         # print log
2618         my $signoff = 0;
2619         my $empty = 0;
2620         foreach my $line (@$log) {
2621                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2622                         $signoff = 1;
2623                         $empty = 0;
2624                         if (! $opts{'-remove_signoff'}) {
2625                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2626                                 next;
2627                         } else {
2628                                 # remove signoff lines
2629                                 next;
2630                         }
2631                 } else {
2632                         $signoff = 0;
2633                 }
2634
2635                 # print only one empty line
2636                 # do not print empty line after signoff
2637                 if ($line eq "") {
2638                         next if ($empty || $signoff);
2639                         $empty = 1;
2640                 } else {
2641                         $empty = 0;
2642                 }
2643
2644                 print format_log_line_html($line) . "<br/>\n";
2645         }
2646
2647         if ($opts{'-final_empty_line'}) {
2648                 # end with single empty line
2649                 print "<br/>\n" unless $empty;
2650         }
2651 }
2652
2653 # return link target (what link points to)
2654 sub git_get_link_target {
2655         my $hash = shift;
2656         my $link_target;
2657
2658         # read link
2659         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2660                 or return;
2661         {
2662                 local $/;
2663                 $link_target = <$fd>;
2664         }
2665         close $fd
2666                 or return;
2667
2668         return $link_target;
2669 }
2670
2671 # given link target, and the directory (basedir) the link is in,
2672 # return target of link relative to top directory (top tree);
2673 # return undef if it is not possible (including absolute links).
2674 sub normalize_link_target {
2675         my ($link_target, $basedir, $hash_base) = @_;
2676
2677         # we can normalize symlink target only if $hash_base is provided
2678         return unless $hash_base;
2679
2680         # absolute symlinks (beginning with '/') cannot be normalized
2681         return if (substr($link_target, 0, 1) eq '/');
2682
2683         # normalize link target to path from top (root) tree (dir)
2684         my $path;
2685         if ($basedir) {
2686                 $path = $basedir . '/' . $link_target;
2687         } else {
2688                 # we are in top (root) tree (dir)
2689                 $path = $link_target;
2690         }
2691
2692         # remove //, /./, and /../
2693         my @path_parts;
2694         foreach my $part (split('/', $path)) {
2695                 # discard '.' and ''
2696                 next if (!$part || $part eq '.');
2697                 # handle '..'
2698                 if ($part eq '..') {
2699                         if (@path_parts) {
2700                                 pop @path_parts;
2701                         } else {
2702                                 # link leads outside repository (outside top dir)
2703                                 return;
2704                         }
2705                 } else {
2706                         push @path_parts, $part;
2707                 }
2708         }
2709         $path = join('/', @path_parts);
2710
2711         return $path;
2712 }
2713
2714 # print tree entry (row of git_tree), but without encompassing <tr> element
2715 sub git_print_tree_entry {
2716         my ($t, $basedir, $hash_base, $have_blame) = @_;
2717
2718         my %base_key = ();
2719         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2720
2721         # The format of a table row is: mode list link.  Where mode is
2722         # the mode of the entry, list is the name of the entry, an href,
2723         # and link is the action links of the entry.
2724
2725         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2726         if ($t->{'type'} eq "blob") {
2727                 print "<td class=\"list\">" .
2728                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2729                                                file_name=>"$basedir$t->{'name'}", %base_key),
2730                                 -class => "list"}, esc_path($t->{'name'}));
2731                 if (S_ISLNK(oct $t->{'mode'})) {
2732                         my $link_target = git_get_link_target($t->{'hash'});
2733                         if ($link_target) {
2734                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2735                                 if (defined $norm_target) {
2736                                         print " -> " .
2737                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2738                                                                      file_name=>$norm_target),
2739                                                        -title => $norm_target}, esc_path($link_target));
2740                                 } else {
2741                                         print " -> " . esc_path($link_target);
2742                                 }
2743                         }
2744                 }
2745                 print "</td>\n";
2746                 print "<td class=\"link\">";
2747                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2748                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2749                               "blob");
2750                 if ($have_blame) {
2751                         print " | " .
2752                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2753                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2754                                       "blame");
2755                 }
2756                 if (defined $hash_base) {
2757                         print " | " .
2758                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2759                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2760                                       "history");
2761                 }
2762                 print " | " .
2763                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2764                                                file_name=>"$basedir$t->{'name'}")},
2765                                 "raw");
2766                 print "</td>\n";
2767
2768         } elsif ($t->{'type'} eq "tree") {
2769                 print "<td class=\"list\">";
2770                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2771                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2772                               esc_path($t->{'name'}));
2773                 print "</td>\n";
2774                 print "<td class=\"link\">";
2775                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2776                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2777                               "tree");
2778                 if (defined $hash_base) {
2779                         print " | " .
2780                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2781                                                      file_name=>"$basedir$t->{'name'}")},
2782                                       "history");
2783                 }
2784                 print "</td>\n";
2785         } else {
2786                 # unknown object: we can only present history for it
2787                 # (this includes 'commit' object, i.e. submodule support)
2788                 print "<td class=\"list\">" .
2789                       esc_path($t->{'name'}) .
2790                       "</td>\n";
2791                 print "<td class=\"link\">";
2792                 if (defined $hash_base) {
2793                         print $cgi->a({-href => href(action=>"history",
2794                                                      hash_base=>$hash_base,
2795                                                      file_name=>"$basedir$t->{'name'}")},
2796                                       "history");
2797                 }
2798                 print "</td>\n";
2799         }
2800 }
2801
2802 ## ......................................................................
2803 ## functions printing large fragments of HTML
2804
2805 # get pre-image filenames for merge (combined) diff
2806 sub fill_from_file_info {
2807         my ($diff, @parents) = @_;
2808
2809         $diff->{'from_file'} = [ ];
2810         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2811         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2812                 if ($diff->{'status'}[$i] eq 'R' ||
2813                     $diff->{'status'}[$i] eq 'C') {
2814                         $diff->{'from_file'}[$i] =
2815                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2816                 }
2817         }
2818
2819         return $diff;
2820 }
2821
2822 # is current raw difftree line of file deletion
2823 sub is_deleted {
2824         my $diffinfo = shift;
2825
2826         return $diffinfo->{'status_str'} =~ /D/;
2827 }
2828
2829 # does patch correspond to [previous] difftree raw line
2830 # $diffinfo  - hashref of parsed raw diff format
2831 # $patchinfo - hashref of parsed patch diff format
2832 #              (the same keys as in $diffinfo)
2833 sub is_patch_split {
2834         my ($diffinfo, $patchinfo) = @_;
2835
2836         return defined $diffinfo && defined $patchinfo
2837                 && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
2838 }
2839
2840
2841 sub git_difftree_body {
2842         my ($difftree, $hash, @parents) = @_;
2843         my ($parent) = $parents[0];
2844         my ($have_blame) = gitweb_check_feature('blame');
2845         print "<div class=\"list_head\">\n";
2846         if ($#{$difftree} > 10) {
2847                 print(($#{$difftree} + 1) . " files changed:\n");
2848         }
2849         print "</div>\n";
2850
2851         print "<table class=\"" .
2852               (@parents > 1 ? "combined " : "") .
2853               "diff_tree\">\n";
2854
2855         # header only for combined diff in 'commitdiff' view
2856         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2857         if ($has_header) {
2858                 # table header
2859                 print "<thead><tr>\n" .
2860                        "<th></th><th></th>\n"; # filename, patchN link
2861                 for (my $i = 0; $i < @parents; $i++) {
2862                         my $par = $parents[$i];
2863                         print "<th>" .
2864                               $cgi->a({-href => href(action=>"commitdiff",
2865                                                      hash=>$hash, hash_parent=>$par),
2866                                        -title => 'commitdiff to parent number ' .
2867                                                   ($i+1) . ': ' . substr($par,0,7)},
2868                                       $i+1) .
2869                               "&nbsp;</th>\n";
2870                 }
2871                 print "</tr></thead>\n<tbody>\n";
2872         }
2873
2874         my $alternate = 1;
2875         my $patchno = 0;
2876         foreach my $line (@{$difftree}) {
2877                 my $diff = parsed_difftree_line($line);
2878
2879                 if ($alternate) {
2880                         print "<tr class=\"dark\">\n";
2881                 } else {
2882                         print "<tr class=\"light\">\n";
2883                 }
2884                 $alternate ^= 1;
2885
2886                 if (exists $diff->{'nparents'}) { # combined diff
2887
2888                         fill_from_file_info($diff, @parents)
2889                                 unless exists $diff->{'from_file'};
2890
2891                         if (!is_deleted($diff)) {
2892                                 # file exists in the result (child) commit
2893                                 print "<td>" .
2894                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2895                                                              file_name=>$diff->{'to_file'},
2896                                                              hash_base=>$hash),
2897                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2898                                       "</td>\n";
2899                         } else {
2900                                 print "<td>" .
2901                                       esc_path($diff->{'to_file'}) .
2902                                       "</td>\n";
2903                         }
2904
2905                         if ($action eq 'commitdiff') {
2906                                 # link to patch
2907                                 $patchno++;
2908                                 print "<td class=\"link\">" .
2909                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2910                                       " | " .
2911                                       "</td>\n";
2912                         }
2913
2914                         my $has_history = 0;
2915                         my $not_deleted = 0;
2916                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2917                                 my $hash_parent = $parents[$i];
2918                                 my $from_hash = $diff->{'from_id'}[$i];
2919                                 my $from_path = $diff->{'from_file'}[$i];
2920                                 my $status = $diff->{'status'}[$i];
2921
2922                                 $has_history ||= ($status ne 'A');
2923                                 $not_deleted ||= ($status ne 'D');
2924
2925                                 if ($status eq 'A') {
2926                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2927                                 } elsif ($status eq 'D') {
2928                                         print "<td class=\"link\">" .
2929                                               $cgi->a({-href => href(action=>"blob",
2930                                                                      hash_base=>$hash,
2931                                                                      hash=>$from_hash,
2932                                                                      file_name=>$from_path)},
2933                                                       "blob" . ($i+1)) .
2934                                               " | </td>\n";
2935                                 } else {
2936                                         if ($diff->{'to_id'} eq $from_hash) {
2937                                                 print "<td class=\"link nochange\">";
2938                                         } else {
2939                                                 print "<td class=\"link\">";
2940                                         }
2941                                         print $cgi->a({-href => href(action=>"blobdiff",
2942                                                                      hash=>$diff->{'to_id'},
2943                                                                      hash_parent=>$from_hash,
2944                                                                      hash_base=>$hash,
2945                                                                      hash_parent_base=>$hash_parent,
2946                                                                      file_name=>$diff->{'to_file'},
2947                                                                      file_parent=>$from_path)},
2948                                                       "diff" . ($i+1)) .
2949                                               " | </td>\n";
2950                                 }
2951                         }
2952
2953                         print "<td class=\"link\">";
2954                         if ($not_deleted) {
2955                                 print $cgi->a({-href => href(action=>"blob",
2956                                                              hash=>$diff->{'to_id'},
2957                                                              file_name=>$diff->{'to_file'},
2958                                                              hash_base=>$hash)},
2959                                               "blob");
2960                                 print " | " if ($has_history);
2961                         }
2962                         if ($has_history) {
2963                                 print $cgi->a({-href => href(action=>"history",
2964                                                              file_name=>$diff->{'to_file'},
2965                                                              hash_base=>$hash)},
2966                                               "history");
2967                         }
2968                         print "</td>\n";
2969
2970                         print "</tr>\n";
2971                         next; # instead of 'else' clause, to avoid extra indent
2972                 }
2973                 # else ordinary diff
2974
2975                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2976                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2977                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2978                         $to_mode_oct = oct $diff->{'to_mode'};
2979                         if (S_ISREG($to_mode_oct)) { # only for regular file
2980                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2981                         }
2982                         $to_file_type = file_type($diff->{'to_mode'});
2983                 }
2984                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2985                         $from_mode_oct = oct $diff->{'from_mode'};
2986                         if (S_ISREG($to_mode_oct)) { # only for regular file
2987                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2988                         }
2989                         $from_file_type = file_type($diff->{'from_mode'});
2990                 }
2991
2992                 if ($diff->{'status'} eq "A") { # created
2993                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2994                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2995                         $mode_chng   .= "]</span>";
2996                         print "<td>";
2997                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2998                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2999                                       -class => "list"}, esc_path($diff->{'file'}));
3000                         print "</td>\n";
3001                         print "<td>$mode_chng</td>\n";
3002                         print "<td class=\"link\">";
3003                         if ($action eq 'commitdiff') {
3004                                 # link to patch
3005                                 $patchno++;
3006                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3007                                 print " | ";
3008                         }
3009                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3010                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3011                                       "blob");
3012                         print "</td>\n";
3013
3014                 } elsif ($diff->{'status'} eq "D") { # deleted
3015                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3016                         print "<td>";
3017                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3018                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
3019                                        -class => "list"}, esc_path($diff->{'file'}));
3020                         print "</td>\n";
3021                         print "<td>$mode_chng</td>\n";
3022                         print "<td class=\"link\">";
3023                         if ($action eq 'commitdiff') {
3024                                 # link to patch
3025                                 $patchno++;
3026                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3027                                 print " | ";
3028                         }
3029                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3030                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3031                                       "blob") . " | ";
3032                         if ($have_blame) {
3033                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3034                                                              file_name=>$diff->{'file'})},
3035                                               "blame") . " | ";
3036                         }
3037                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3038                                                      file_name=>$diff->{'file'})},
3039                                       "history");
3040                         print "</td>\n";
3041
3042                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3043                         my $mode_chnge = "";
3044                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3045                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3046                                 if ($from_file_type ne $to_file_type) {
3047                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3048                                 }
3049                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3050                                         if ($from_mode_str && $to_mode_str) {
3051                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3052                                         } elsif ($to_mode_str) {
3053                                                 $mode_chnge .= " mode: $to_mode_str";
3054                                         }
3055                                 }
3056                                 $mode_chnge .= "]</span>\n";
3057                         }
3058                         print "<td>";
3059                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3060                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3061                                       -class => "list"}, esc_path($diff->{'file'}));
3062                         print "</td>\n";
3063                         print "<td>$mode_chnge</td>\n";
3064                         print "<td class=\"link\">";
3065                         if ($action eq 'commitdiff') {
3066                                 # link to patch
3067                                 $patchno++;
3068                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3069                                       " | ";
3070                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3071                                 # "commit" view and modified file (not onlu mode changed)
3072                                 print $cgi->a({-href => href(action=>"blobdiff",
3073                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3074                                                              hash_base=>$hash, hash_parent_base=>$parent,
3075                                                              file_name=>$diff->{'file'})},
3076                                               "diff") .
3077                                       " | ";
3078                         }
3079                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3080                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3081                                        "blob") . " | ";
3082                         if ($have_blame) {
3083                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3084                                                              file_name=>$diff->{'file'})},
3085                                               "blame") . " | ";
3086                         }
3087                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3088                                                      file_name=>$diff->{'file'})},
3089                                       "history");
3090                         print "</td>\n";
3091
3092                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3093                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3094                         my $nstatus = $status_name{$diff->{'status'}};
3095                         my $mode_chng = "";
3096                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3097                                 # mode also for directories, so we cannot use $to_mode_str
3098                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3099                         }
3100                         print "<td>" .
3101                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3102                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3103                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3104                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3105                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3106                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3107                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3108                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3109                               "<td class=\"link\">";
3110                         if ($action eq 'commitdiff') {
3111                                 # link to patch
3112                                 $patchno++;
3113                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3114                                       " | ";
3115                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3116                                 # "commit" view and modified file (not only pure rename or copy)
3117                                 print $cgi->a({-href => href(action=>"blobdiff",
3118                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3119                                                              hash_base=>$hash, hash_parent_base=>$parent,
3120                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3121                                               "diff") .
3122                                       " | ";
3123                         }
3124                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3125                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3126                                       "blob") . " | ";
3127                         if ($have_blame) {
3128                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3129                                                              file_name=>$diff->{'to_file'})},
3130                                               "blame") . " | ";
3131                         }
3132                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3133                                                     file_name=>$diff->{'to_file'})},
3134                                       "history");
3135                         print "</td>\n";
3136
3137                 } # we should not encounter Unmerged (U) or Unknown (X) status
3138                 print "</tr>\n";
3139         }
3140         print "</tbody>" if $has_header;
3141         print "</table>\n";
3142 }
3143
3144 sub git_patchset_body {
3145         my ($fd, $difftree, $hash, @hash_parents) = @_;
3146         my ($hash_parent) = $hash_parents[0];
3147
3148         my $is_combined = (@hash_parents > 1);
3149         my $patch_idx = 0;
3150         my $patch_number = 0;
3151         my $patch_line;
3152         my $diffinfo;
3153         my $to_name;
3154         my (%from, %to);
3155
3156         print "<div class=\"patchset\">\n";
3157
3158         # skip to first patch
3159         while ($patch_line = <$fd>) {
3160                 chomp $patch_line;
3161
3162                 last if ($patch_line =~ m/^diff /);
3163         }
3164
3165  PATCH:
3166         while ($patch_line) {
3167
3168                 # parse "git diff" header line
3169                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3170                         # $1 is from_name, which we do not use
3171                         $to_name = unquote($2);
3172                         $to_name =~ s!^b/!!;
3173                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3174                         # $1 is 'cc' or 'combined', which we do not use
3175                         $to_name = unquote($2);
3176                 } else {
3177                         $to_name = undef;
3178                 }
3179
3180                 # check if current patch belong to current raw line
3181                 # and parse raw git-diff line if needed
3182                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3183                         # this is continuation of a split patch
3184                         print "<div class=\"patch cont\">\n";
3185                 } else {
3186                         # advance raw git-diff output if needed
3187                         $patch_idx++ if defined $diffinfo;
3188
3189                         # read and prepare patch information
3190                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3191
3192                         # compact combined diff output can have some patches skipped
3193                         # find which patch (using pathname of result) we are at now;
3194                         if ($is_combined) {
3195                                 while ($to_name ne $diffinfo->{'to_file'}) {
3196                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3197                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3198                                               "</div>\n";  # class="patch"
3199
3200                                         $patch_idx++;
3201                                         $patch_number++;
3202
3203                                         last if $patch_idx > $#$difftree;
3204                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3205                                 }
3206                         }
3207
3208                         # modifies %from, %to hashes
3209                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3210
3211                         # this is first patch for raw difftree line with $patch_idx index
3212                         # we index @$difftree array from 0, but number patches from 1
3213                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3214                 }
3215
3216                 # git diff header
3217                 #assert($patch_line =~ m/^diff /) if DEBUG;
3218                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3219                 $patch_number++;
3220                 # print "git diff" header
3221                 print format_git_diff_header_line($patch_line, $diffinfo,
3222                                                   \%from, \%to);
3223
3224                 # print extended diff header
3225                 print "<div class=\"diff extended_header\">\n";
3226         EXTENDED_HEADER:
3227                 while ($patch_line = <$fd>) {
3228                         chomp $patch_line;
3229
3230                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3231
3232                         print format_extended_diff_header_line($patch_line, $diffinfo,
3233                                                                \%from, \%to);
3234                 }
3235                 print "</div>\n"; # class="diff extended_header"
3236
3237                 # from-file/to-file diff header
3238                 if (! $patch_line) {
3239                         print "</div>\n"; # class="patch"
3240                         last PATCH;
3241                 }
3242                 next PATCH if ($patch_line =~ m/^diff /);
3243                 #assert($patch_line =~ m/^---/) if DEBUG;
3244
3245                 my $last_patch_line = $patch_line;
3246                 $patch_line = <$fd>;
3247                 chomp $patch_line;
3248                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3249
3250                 print format_diff_from_to_header($last_patch_line, $patch_line,
3251                                                  $diffinfo, \%from, \%to,
3252                                                  @hash_parents);
3253
3254                 # the patch itself
3255         LINE:
3256                 while ($patch_line = <$fd>) {
3257                         chomp $patch_line;
3258
3259                         next PATCH if ($patch_line =~ m/^diff /);
3260
3261                         print format_diff_line($patch_line, \%from, \%to);
3262                 }
3263
3264         } continue {
3265                 print "</div>\n"; # class="patch"
3266         }
3267
3268         # for compact combined (--cc) format, with chunk and patch simpliciaction
3269         # patchset might be empty, but there might be unprocessed raw lines
3270         for (++$patch_idx if $patch_number > 0;
3271              $patch_idx < @$difftree;
3272              ++$patch_idx) {
3273                 # read and prepare patch information
3274                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3275
3276                 # generate anchor for "patch" links in difftree / whatchanged part
3277                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3278                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3279                       "</div>\n";  # class="patch"
3280
3281                 $patch_number++;
3282         }
3283
3284         if ($patch_number == 0) {
3285                 if (@hash_parents > 1) {
3286                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3287                 } else {
3288                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3289                 }
3290         }
3291
3292         print "</div>\n"; # class="patchset"
3293 }
3294
3295 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3296
3297 sub git_project_list_body {
3298         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3299
3300         my ($check_forks) = gitweb_check_feature('forks');
3301
3302         my @projects;
3303         foreach my $pr (@$projlist) {
3304                 my (@aa) = git_get_last_activity($pr->{'path'});
3305                 unless (@aa) {
3306                         next;
3307                 }
3308                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3309                 if (!defined $pr->{'descr'}) {
3310                         my $descr = git_get_project_description($pr->{'path'}) || "";
3311                         $pr->{'descr_long'} = to_utf8($descr);
3312                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3313                 }
3314                 if (!defined $pr->{'owner'}) {
3315                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3316                 }
3317                 if ($check_forks) {
3318                         my $pname = $pr->{'path'};
3319                         if (($pname =~ s/\.git$//) &&
3320                             ($pname !~ /\/$/) &&
3321                             (-d "$projectroot/$pname")) {
3322                                 $pr->{'forks'} = "-d $projectroot/$pname";
3323                         }
3324                         else {
3325                                 $pr->{'forks'} = 0;
3326                         }
3327                 }
3328                 push @projects, $pr;
3329         }
3330
3331         $order ||= $default_projects_order;
3332         $from = 0 unless defined $from;
3333         $to = $#projects if (!defined $to || $#projects < $to);
3334
3335         print "<table class=\"project_list\">\n";
3336         unless ($no_header) {
3337                 print "<tr>\n";
3338                 if ($check_forks) {
3339                         print "<th></th>\n";
3340                 }
3341                 if ($order eq "project") {
3342                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3343                         print "<th>Project</th>\n";
3344                 } else {
3345                         print "<th>" .
3346                               $cgi->a({-href => href(project=>undef, order=>'project'),
3347                                        -class => "header"}, "Project") .
3348                               "</th>\n";
3349                 }
3350                 if ($order eq "descr") {
3351                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3352                         print "<th>Description</th>\n";
3353                 } else {
3354                         print "<th>" .
3355                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3356                                        -class => "header"}, "Description") .
3357                               "</th>\n";
3358                 }
3359                 if ($order eq "owner") {
3360                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3361                         print "<th>Owner</th>\n";
3362                 } else {
3363                         print "<th>" .
3364                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3365                                        -class => "header"}, "Owner") .
3366                               "</th>\n";
3367                 }
3368                 if ($order eq "age") {
3369                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3370                         print "<th>Last Change</th>\n";
3371                 } else {
3372                         print "<th>" .
3373                               $cgi->a({-href => href(project=>undef, order=>'age'),
3374                                        -class => "header"}, "Last Change") .
3375                               "</th>\n";
3376                 }
3377                 print "<th></th>\n" .
3378                       "</tr>\n";
3379         }
3380         my $alternate = 1;
3381         for (my $i = $from; $i <= $to; $i++) {
3382                 my $pr = $projects[$i];
3383                 if ($alternate) {
3384                         print "<tr class=\"dark\">\n";
3385                 } else {
3386                         print "<tr class=\"light\">\n";
3387                 }
3388                 $alternate ^= 1;
3389                 if ($check_forks) {
3390                         print "<td>";
3391                         if ($pr->{'forks'}) {
3392                                 print "<!-- $pr->{'forks'} -->\n";
3393                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3394                         }
3395                         print "</td>\n";
3396                 }
3397                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3398                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3399                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3400                                         -class => "list", -title => $pr->{'descr_long'}},
3401                                         esc_html($pr->{'descr'})) . "</td>\n" .
3402                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3403                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3404                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3405                       "<td class=\"link\">" .
3406                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3407                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3408                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3409                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3410                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3411                       "</td>\n" .
3412                       "</tr>\n";
3413         }
3414         if (defined $extra) {
3415                 print "<tr>\n";
3416                 if ($check_forks) {
3417                         print "<td></td>\n";
3418                 }
3419                 print "<td colspan=\"5\">$extra</td>\n" .
3420                       "</tr>\n";
3421         }
3422         print "</table>\n";
3423 }
3424
3425 sub git_shortlog_body {
3426         # uses global variable $project
3427         my ($commitlist, $from, $to, $refs, $extra) = @_;
3428
3429         $from = 0 unless defined $from;
3430         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3431
3432         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3433         my $alternate = 1;
3434         for (my $i = $from; $i <= $to; $i++) {
3435                 my %co = %{$commitlist->[$i]};
3436                 my $commit = $co{'id'};
3437                 my $ref = format_ref_marker($refs, $commit);
3438                 if ($alternate) {
3439                         print "<tr class=\"dark\">\n";
3440                 } else {
3441                         print "<tr class=\"light\">\n";
3442                 }
3443                 $alternate ^= 1;
3444                 my $author = chop_and_escape_str($co{'author_name'}, 10);
3445                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3446                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3447                       "<td><i>" . $author . "</i></td>\n" .
3448                       "<td>";
3449                 print format_subject_html($co{'title'}, $co{'title_short'},
3450                                           href(action=>"commit", hash=>$commit), $ref);
3451                 print "</td>\n" .
3452                       "<td class=\"link\">" .
3453                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3454                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3455                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3456                 my $snapshot_links = format_snapshot_links($commit);
3457                 if (defined $snapshot_links) {
3458                         print " | " . $snapshot_links;
3459                 }
3460                 print "</td>\n" .
3461                       "</tr>\n";
3462         }
3463         if (defined $extra) {
3464                 print "<tr>\n" .
3465                       "<td colspan=\"4\">$extra</td>\n" .
3466                       "</tr>\n";
3467         }
3468         print "</table>\n";
3469 }
3470
3471 sub git_history_body {
3472         # Warning: assumes constant type (blob or tree) during history
3473         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3474
3475         $from = 0 unless defined $from;
3476         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3477
3478         print "<table class=\"history\" cellspacing=\"0\">\n";
3479         my $alternate = 1;
3480         for (my $i = $from; $i <= $to; $i++) {
3481                 my %co = %{$commitlist->[$i]};
3482                 if (!%co) {
3483                         next;
3484                 }
3485                 my $commit = $co{'id'};
3486
3487                 my $ref = format_ref_marker($refs, $commit);
3488
3489                 if ($alternate) {
3490                         print "<tr class=\"dark\">\n";
3491                 } else {
3492                         print "<tr class=\"light\">\n";
3493                 }
3494                 $alternate ^= 1;
3495         # shortlog uses      chop_str($co{'author_name'}, 10)
3496                 my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3497                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3498                       "<td><i>" . $author . "</i></td>\n" .
3499                       "<td>";
3500                 # originally git_history used chop_str($co{'title'}, 50)
3501                 print format_subject_html($co{'title'}, $co{'title_short'},
3502                                           href(action=>"commit", hash=>$commit), $ref);
3503                 print "</td>\n" .
3504                       "<td class=\"link\">" .
3505                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3506                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3507
3508                 if ($ftype eq 'blob') {
3509                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3510                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3511                         if (defined $blob_current && defined $blob_parent &&
3512                                         $blob_current ne $blob_parent) {
3513                                 print " | " .
3514                                         $cgi->a({-href => href(action=>"blobdiff",
3515                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3516                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3517                                                                file_name=>$file_name)},
3518                                                 "diff to current");
3519                         }
3520                 }
3521                 print "</td>\n" .
3522                       "</tr>\n";
3523         }
3524         if (defined $extra) {
3525                 print "<tr>\n" .
3526                       "<td colspan=\"4\">$extra</td>\n" .
3527                       "</tr>\n";
3528         }
3529         print "</table>\n";
3530 }
3531
3532 sub git_tags_body {
3533         # uses global variable $project
3534         my ($taglist, $from, $to, $extra) = @_;
3535         $from = 0 unless defined $from;
3536         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3537
3538         print "<table class=\"tags\" cellspacing=\"0\">\n";
3539         my $alternate = 1;
3540         for (my $i = $from; $i <= $to; $i++) {
3541                 my $entry = $taglist->[$i];
3542                 my %tag = %$entry;
3543                 my $comment = $tag{'subject'};
3544                 my $comment_short;
3545                 if (defined $comment) {
3546                         $comment_short = chop_str($comment, 30, 5);
3547                 }
3548                 if ($alternate) {
3549                         print "<tr class=\"dark\">\n";
3550                 } else {
3551                         print "<tr class=\"light\">\n";
3552                 }
3553                 $alternate ^= 1;
3554                 if (defined $tag{'age'}) {
3555                         print "<td><i>$tag{'age'}</i></td>\n";
3556                 } else {
3557                         print "<td></td>\n";
3558                 }
3559                 print "<td>" .
3560                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3561                                -class => "list name"}, esc_html($tag{'name'})) .
3562                       "</td>\n" .
3563                       "<td>";
3564                 if (defined $comment) {
3565                         print format_subject_html($comment, $comment_short,
3566                                                   href(action=>"tag", hash=>$tag{'id'}));
3567                 }
3568                 print "</td>\n" .
3569                       "<td class=\"selflink\">";
3570                 if ($tag{'type'} eq "tag") {
3571                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3572                 } else {
3573                         print "&nbsp;";
3574                 }
3575                 print "</td>\n" .
3576                       "<td class=\"link\">" . " | " .
3577                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3578                 if ($tag{'reftype'} eq "commit") {
3579                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3580                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3581                 } elsif ($tag{'reftype'} eq "blob") {
3582                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3583                 }
3584                 print "</td>\n" .
3585                       "</tr>";
3586         }
3587         if (defined $extra) {
3588                 print "<tr>\n" .
3589                       "<td colspan=\"5\">$extra</td>\n" .
3590                       "</tr>\n";
3591         }
3592         print "</table>\n";
3593 }
3594
3595 sub git_heads_body {
3596         # uses global variable $project
3597         my ($headlist, $head, $from, $to, $extra) = @_;
3598         $from = 0 unless defined $from;
3599         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3600
3601         print "<table class=\"heads\" cellspacing=\"0\">\n";
3602         my $alternate = 1;
3603         for (my $i = $from; $i <= $to; $i++) {
3604                 my $entry = $headlist->[$i];
3605                 my %ref = %$entry;
3606                 my $curr = $ref{'id'} eq $head;
3607                 if ($alternate) {
3608                         print "<tr class=\"dark\">\n";
3609                 } else {
3610                         print "<tr class=\"light\">\n";
3611                 }
3612                 $alternate ^= 1;
3613                 print "<td><i>$ref{'age'}</i></td>\n" .
3614                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3615                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3616                                -class => "list name"},esc_html($ref{'name'})) .
3617                       "</td>\n" .
3618                       "<td class=\"link\">" .
3619                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3620                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3621                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3622                       "</td>\n" .
3623                       "</tr>";
3624         }
3625         if (defined $extra) {
3626                 print "<tr>\n" .
3627                       "<td colspan=\"3\">$extra</td>\n" .
3628                       "</tr>\n";
3629         }
3630         print "</table>\n";
3631 }
3632
3633 sub git_search_grep_body {
3634         my ($commitlist, $from, $to, $extra) = @_;
3635         $from = 0 unless defined $from;
3636         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3637
3638         print "<table class=\"grep\" cellspacing=\"0\">\n";
3639         my $alternate = 1;
3640         for (my $i = $from; $i <= $to; $i++) {
3641                 my %co = %{$commitlist->[$i]};
3642                 if (!%co) {
3643                         next;
3644                 }
3645                 my $commit = $co{'id'};
3646                 if ($alternate) {
3647                         print "<tr class=\"dark\">\n";
3648                 } else {
3649                         print "<tr class=\"light\">\n";
3650                 }
3651                 $alternate ^= 1;
3652                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3653                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3654                       "<td><i>" . $author . "</i></td>\n" .
3655                       "<td>" .
3656                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3657                                chop_and_escape_str($co{'title'}, 50) . "<br/>");
3658                 my $comment = $co{'comment'};
3659                 foreach my $line (@$comment) {
3660                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3661                                 my $lead = esc_html($1) || "";
3662                                 $lead = chop_str($lead, 30, 10);
3663                                 my $match = esc_html($2) || "";
3664                                 my $trail = esc_html($3) || "";
3665                                 $trail = chop_str($trail, 30, 10);
3666                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3667                                 print chop_str($text, 80, 5) . "<br/>\n";
3668                         }
3669                 }
3670                 print "</td>\n" .
3671                       "<td class=\"link\">" .
3672                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3673                       " | " .
3674                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3675                 print "</td>\n" .
3676                       "</tr>\n";
3677         }
3678         if (defined $extra) {
3679                 print "<tr>\n" .
3680                       "<td colspan=\"3\">$extra</td>\n" .
3681                       "</tr>\n";
3682         }
3683         print "</table>\n";
3684 }
3685
3686 ## ======================================================================
3687 ## ======================================================================
3688 ## actions
3689
3690 sub git_project_list {
3691         my $order = $cgi->param('o');
3692         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3693                 die_error(undef, "Unknown order parameter");
3694         }
3695
3696         my @list = git_get_projects_list();
3697         if (!@list) {
3698                 die_error(undef, "No projects found");
3699         }
3700
3701         git_header_html();
3702         if (-f $home_text) {
3703                 print "<div class=\"index_include\">\n";
3704                 open (my $fd, $home_text);
3705                 print <$fd>;
3706                 close $fd;
3707                 print "</div>\n";
3708         }
3709         git_project_list_body(\@list, $order);
3710         git_footer_html();
3711 }
3712
3713 sub git_forks {
3714         my $order = $cgi->param('o');
3715         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3716                 die_error(undef, "Unknown order parameter");
3717         }
3718
3719         my @list = git_get_projects_list($project);
3720         if (!@list) {
3721                 die_error(undef, "No forks found");
3722         }
3723
3724         git_header_html();
3725         git_print_page_nav('','');
3726         git_print_header_div('summary', "$project forks");
3727         git_project_list_body(\@list, $order);
3728         git_footer_html();
3729 }
3730
3731 sub git_project_index {
3732         my @projects = git_get_projects_list($project);
3733
3734         print $cgi->header(
3735                 -type => 'text/plain',
3736                 -charset => 'utf-8',
3737                 -content_disposition => 'inline; filename="index.aux"');
3738
3739         foreach my $pr (@projects) {
3740                 if (!exists $pr->{'owner'}) {
3741                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3742                 }
3743
3744                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3745                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3746                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3747                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3748                 $path  =~ s/ /\+/g;
3749                 $owner =~ s/ /\+/g;
3750
3751                 print "$path $owner\n";
3752         }
3753 }
3754
3755 sub git_summary {
3756         my $descr = git_get_project_description($project) || "none";
3757         my %co = parse_commit("HEAD");
3758         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3759         my $head = $co{'id'};
3760
3761         my $owner = git_get_project_owner($project);
3762
3763         my $refs = git_get_references();
3764         # These get_*_list functions return one more to allow us to see if
3765         # there are more ...
3766         my @taglist  = git_get_tags_list(16);
3767         my @headlist = git_get_heads_list(16);
3768         my @forklist;
3769         my ($check_forks) = gitweb_check_feature('forks');
3770
3771         if ($check_forks) {
3772                 @forklist = git_get_projects_list($project);
3773         }
3774
3775         git_header_html();
3776         git_print_page_nav('summary','', $head);
3777
3778         print "<div class=\"title\">&nbsp;</div>\n";
3779         print "<table cellspacing=\"0\">\n" .
3780               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3781               "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3782         if (defined $cd{'rfc2822'}) {
3783                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3784         }
3785
3786         # use per project git URL list in $projectroot/$project/cloneurl
3787         # or make project git URL from git base URL and project name
3788         my $url_tag = "URL";
3789         my @url_list = git_get_project_url_list($project);
3790         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3791         foreach my $git_url (@url_list) {
3792                 next unless $git_url;
3793                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3794                 $url_tag = "";
3795         }
3796         print "</table>\n";
3797
3798         if (-s "$projectroot/$project/README.html") {
3799                 if (open my $fd, "$projectroot/$project/README.html") {
3800                         print "<div class=\"title\">readme</div>\n";
3801                         print $_ while (<$fd>);
3802                         close $fd;
3803                 }
3804         }
3805
3806         # we need to request one more than 16 (0..15) to check if
3807         # those 16 are all
3808         my @commitlist = $head ? parse_commits($head, 17) : ();
3809         if (@commitlist) {
3810                 git_print_header_div('shortlog');
3811                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3812                                   $#commitlist <=  15 ? undef :
3813                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3814         }
3815
3816         if (@taglist) {
3817                 git_print_header_div('tags');
3818                 git_tags_body(\@taglist, 0, 15,
3819                               $#taglist <=  15 ? undef :
3820                               $cgi->a({-href => href(action=>"tags")}, "..."));
3821         }
3822
3823         if (@headlist) {
3824                 git_print_header_div('heads');
3825                 git_heads_body(\@headlist, $head, 0, 15,
3826                                $#headlist <= 15 ? undef :
3827                                $cgi->a({-href => href(action=>"heads")}, "..."));
3828         }
3829
3830         if (@forklist) {
3831                 git_print_header_div('forks');
3832                 git_project_list_body(\@forklist, undef, 0, 15,
3833                                       $#forklist <= 15 ? undef :
3834                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3835                                       'noheader');
3836         }
3837
3838         git_footer_html();
3839 }
3840
3841 sub git_tag {
3842         my $head = git_get_head_hash($project);
3843         git_header_html();
3844         git_print_page_nav('','', $head,undef,$head);
3845         my %tag = parse_tag($hash);
3846
3847         if (! %tag) {
3848                 die_error(undef, "Unknown tag object");
3849         }
3850
3851         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3852         print "<div class=\"title_text\">\n" .
3853               "<table cellspacing=\"0\">\n" .
3854               "<tr>\n" .
3855               "<td>object</td>\n" .
3856               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3857                                $tag{'object'}) . "</td>\n" .
3858               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3859                                               $tag{'type'}) . "</td>\n" .
3860               "</tr>\n";
3861         if (defined($tag{'author'})) {
3862                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3863                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3864                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3865                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3866                         "</td></tr>\n";
3867         }
3868         print "</table>\n\n" .
3869               "</div>\n";
3870         print "<div class=\"page_body\">";
3871         my $comment = $tag{'comment'};
3872         foreach my $line (@$comment) {
3873                 chomp $line;
3874                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3875         }
3876         print "</div>\n";
3877         git_footer_html();
3878 }
3879
3880 sub git_blame2 {
3881         my $fd;
3882         my $ftype;
3883
3884         my ($have_blame) = gitweb_check_feature('blame');
3885         if (!$have_blame) {
3886                 die_error('403 Permission denied', "Permission denied");
3887         }
3888         die_error('404 Not Found', "File name not defined") if (!$file_name);
3889         $hash_base ||= git_get_head_hash($project);
3890         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3891         my %co = parse_commit($hash_base)
3892                 or die_error(undef, "Reading commit failed");
3893         if (!defined $hash) {
3894                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3895                         or die_error(undef, "Error looking up file");
3896         }
3897         $ftype = git_get_type($hash);
3898         if ($ftype !~ "blob") {
3899                 die_error('400 Bad Request', "Object is not a blob");
3900         }
3901         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3902               $file_name, $hash_base)
3903                 or die_error(undef, "Open git-blame failed");
3904         git_header_html();
3905         my $formats_nav =
3906                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3907                         "blob") .
3908                 " | " .
3909                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3910                         "history") .
3911                 " | " .
3912                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3913                         "HEAD");
3914         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3915         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3916         git_print_page_path($file_name, $ftype, $hash_base);
3917         my @rev_color = (qw(light2 dark2));
3918         my $num_colors = scalar(@rev_color);
3919         my $current_color = 0;
3920         my $last_rev;
3921         print <<HTML;
3922 <div class="page_body">
3923 <table class="blame">
3924 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3925 HTML
3926         my %metainfo = ();
3927         while (1) {
3928                 $_ = <$fd>;
3929                 last unless defined $_;
3930                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3931                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3932                 if (!exists $metainfo{$full_rev}) {
3933                         $metainfo{$full_rev} = {};
3934                 }
3935                 my $meta = $metainfo{$full_rev};
3936                 while (<$fd>) {
3937                         last if (s/^\t//);
3938                         if (/^(\S+) (.*)$/) {
3939                                 $meta->{$1} = $2;
3940                         }
3941                 }
3942                 my $data = $_;
3943                 chomp $data;
3944                 my $rev = substr($full_rev, 0, 8);
3945                 my $author = $meta->{'author'};
3946                 my %date = parse_date($meta->{'author-time'},
3947                                       $meta->{'author-tz'});
3948                 my $date = $date{'iso-tz'};
3949                 if ($group_size) {
3950                         $current_color = ++$current_color % $num_colors;
3951                 }
3952                 print "<tr class=\"$rev_color[$current_color]\">\n";
3953                 if ($group_size) {
3954                         print "<td class=\"sha1\"";
3955                         print " title=\"". esc_html($author) . ", $date\"";
3956                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3957                         print ">";
3958                         print $cgi->a({-href => href(action=>"commit",
3959                                                      hash=>$full_rev,
3960                                                      file_name=>$file_name)},
3961                                       esc_html($rev));
3962                         print "</td>\n";
3963                 }
3964                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3965                         or die_error(undef, "Open git-rev-parse failed");
3966                 my $parent_commit = <$dd>;
3967                 close $dd;
3968                 chomp($parent_commit);
3969                 my $blamed = href(action => 'blame',
3970                                   file_name => $meta->{'filename'},
3971                                   hash_base => $parent_commit);
3972                 print "<td class=\"linenr\">";
3973                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3974                                 -id => "l$lineno",
3975                                 -class => "linenr" },
3976                               esc_html($lineno));
3977                 print "</td>";
3978                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3979                 print "</tr>\n";
3980         }
3981         print "</table>\n";
3982         print "</div>";
3983         close $fd
3984                 or print "Reading blob failed\n";
3985         git_footer_html();
3986 }
3987
3988 sub git_blame {
3989         my $fd;
3990
3991         my ($have_blame) = gitweb_check_feature('blame');
3992         if (!$have_blame) {
3993                 die_error('403 Permission denied', "Permission denied");
3994         }
3995         die_error('404 Not Found', "File name not defined") if (!$file_name);
3996         $hash_base ||= git_get_head_hash($project);
3997         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3998         my %co = parse_commit($hash_base)
3999                 or die_error(undef, "Reading commit failed");
4000         if (!defined $hash) {
4001                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4002                         or die_error(undef, "Error lookup file");
4003         }
4004         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4005                 or die_error(undef, "Open git-annotate failed");
4006         git_header_html();
4007         my $formats_nav =
4008                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4009                         "blob") .
4010                 " | " .
4011                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4012                         "history") .
4013                 " | " .
4014                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4015                         "HEAD");
4016         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4017         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4018         git_print_page_path($file_name, 'blob', $hash_base);
4019         print "<div class=\"page_body\">\n";
4020         print <<HTML;
4021 <table class="blame">
4022   <tr>
4023     <th>Commit</th>
4024     <th>Age</th>
4025     <th>Author</th>
4026     <th>Line</th>
4027     <th>Data</th>
4028   </tr>
4029 HTML
4030         my @line_class = (qw(light dark));
4031         my $line_class_len = scalar (@line_class);
4032         my $line_class_num = $#line_class;
4033         while (my $line = <$fd>) {
4034                 my $long_rev;
4035                 my $short_rev;
4036                 my $author;
4037                 my $time;
4038                 my $lineno;
4039                 my $data;
4040                 my $age;
4041                 my $age_str;
4042                 my $age_class;
4043
4044                 chomp $line;
4045                 $line_class_num = ($line_class_num + 1) % $line_class_len;
4046
4047                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4048                         $long_rev = $1;
4049                         $author   = $2;
4050                         $time     = $3;
4051                         $lineno   = $4;
4052                         $data     = $5;
4053                 } else {
4054                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4055                         next;
4056                 }
4057                 $short_rev  = substr ($long_rev, 0, 8);
4058                 $age        = time () - $time;
4059                 $age_str    = age_string ($age);
4060                 $age_str    =~ s/ /&nbsp;/g;
4061                 $age_class  = age_class($age);
4062                 $author     = esc_html ($author);
4063                 $author     =~ s/ /&nbsp;/g;
4064
4065                 $data = untabify($data);
4066                 $data = esc_html ($data);
4067
4068                 print <<HTML;
4069   <tr class="$line_class[$line_class_num]">
4070     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4071     <td class="$age_class">$age_str</td>
4072     <td>$author</td>
4073     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4074     <td class="pre">$data</td>
4075   </tr>
4076 HTML
4077         } # while (my $line = <$fd>)
4078         print "</table>\n\n";
4079         close $fd
4080                 or print "Reading blob failed.\n";
4081         print "</div>";
4082         git_footer_html();
4083 }
4084
4085 sub git_tags {
4086         my $head = git_get_head_hash($project);
4087         git_header_html();
4088         git_print_page_nav('','', $head,undef,$head);
4089         git_print_header_div('summary', $project);
4090
4091         my @tagslist = git_get_tags_list();
4092         if (@tagslist) {
4093                 git_tags_body(\@tagslist);
4094         }
4095         git_footer_html();
4096 }
4097
4098 sub git_heads {
4099         my $head = git_get_head_hash($project);
4100         git_header_html();
4101         git_print_page_nav('','', $head,undef,$head);
4102         git_print_header_div('summary', $project);
4103
4104         my @headslist = git_get_heads_list();
4105         if (@headslist) {
4106                 git_heads_body(\@headslist, $head);
4107         }
4108         git_footer_html();
4109 }
4110
4111 sub git_blob_plain {
4112         my $expires;
4113
4114         if (!defined $hash) {
4115                 if (defined $file_name) {
4116                         my $base = $hash_base || git_get_head_hash($project);
4117                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4118                                 or die_error(undef, "Error lookup file");
4119                 } else {
4120                         die_error(undef, "No file name defined");
4121                 }
4122         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4123                 # blobs defined by non-textual hash id's can be cached
4124                 $expires = "+1d";
4125         }
4126
4127         my $type = shift;
4128         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4129                 or die_error(undef, "Couldn't cat $file_name, $hash");
4130
4131         $type ||= blob_mimetype($fd, $file_name);
4132
4133         # save as filename, even when no $file_name is given
4134         my $save_as = "$hash";
4135         if (defined $file_name) {
4136                 $save_as = $file_name;
4137         } elsif ($type =~ m/^text\//) {
4138                 $save_as .= '.txt';
4139         }
4140
4141         print $cgi->header(
4142                 -type => "$type",
4143                 -expires=>$expires,
4144                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4145         undef $/;
4146         binmode STDOUT, ':raw';
4147         print <$fd>;
4148         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4149         $/ = "\n";
4150         close $fd;
4151 }
4152
4153 sub git_blob {
4154         my $expires;
4155
4156         if (!defined $hash) {
4157                 if (defined $file_name) {
4158                         my $base = $hash_base || git_get_head_hash($project);
4159                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4160                                 or die_error(undef, "Error lookup file");
4161                 } else {
4162                         die_error(undef, "No file name defined");
4163                 }
4164         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4165                 # blobs defined by non-textual hash id's can be cached
4166                 $expires = "+1d";
4167         }
4168
4169         my ($have_blame) = gitweb_check_feature('blame');
4170         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4171                 or die_error(undef, "Couldn't cat $file_name, $hash");
4172         my $mimetype = blob_mimetype($fd, $file_name);
4173         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4174                 close $fd;
4175                 return git_blob_plain($mimetype);
4176         }
4177         # we can have blame only for text/* mimetype
4178         $have_blame &&= ($mimetype =~ m!^text/!);
4179
4180         git_header_html(undef, $expires);
4181         my $formats_nav = '';
4182         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4183                 if (defined $file_name) {
4184                         if ($have_blame) {
4185                                 $formats_nav .=
4186                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4187                                                                hash=>$hash, file_name=>$file_name)},
4188                                                 "blame") .
4189                                         " | ";
4190                         }
4191                         $formats_nav .=
4192                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4193                                                        hash=>$hash, file_name=>$file_name)},
4194                                         "history") .
4195                                 " | " .
4196                                 $cgi->a({-href => href(action=>"blob_plain",
4197                                                        hash=>$hash, file_name=>$file_name)},
4198                                         "raw") .
4199                                 " | " .
4200                                 $cgi->a({-href => href(action=>"blob",
4201                                                        hash_base=>"HEAD", file_name=>$file_name)},
4202                                         "HEAD");
4203                 } else {
4204                         $formats_nav .=
4205                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4206                 }
4207                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4208                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4209         } else {
4210                 print "<div class=\"page_nav\">\n" .
4211                       "<br/><br/></div>\n" .
4212                       "<div class=\"title\">$hash</div>\n";
4213         }
4214         git_print_page_path($file_name, "blob", $hash_base);
4215         print "<div class=\"page_body\">\n";
4216         if ($mimetype =~ m!^text/!) {
4217                 my $nr;
4218                 while (my $line = <$fd>) {
4219                         chomp $line;
4220                         $nr++;
4221                         $line = untabify($line);
4222                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4223                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4224                 }
4225         } elsif ($mimetype =~ m!^image/!) {
4226                 print qq!<img type="$mimetype"!;
4227                 if ($file_name) {
4228                         print qq! alt="$file_name" title="$file_name"!;
4229                 }
4230                 print qq! src="! .
4231                       href(action=>"blob_plain", hash=>$hash,
4232                            hash_base=>$hash_base, file_name=>$file_name) .
4233                       qq!" />\n!;
4234         }
4235         close $fd
4236                 or print "Reading blob failed.\n";
4237         print "</div>";
4238         git_footer_html();
4239 }
4240
4241 sub git_tree {
4242         if (!defined $hash_base) {
4243                 $hash_base = "HEAD";
4244         }
4245         if (!defined $hash) {
4246                 if (defined $file_name) {
4247                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4248                 } else {
4249                         $hash = $hash_base;
4250                 }
4251         }
4252         $/ = "\0";
4253         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4254                 or die_error(undef, "Open git-ls-tree failed");
4255         my @entries = map { chomp; $_ } <$fd>;
4256         close $fd or die_error(undef, "Reading tree failed");
4257         $/ = "\n";
4258
4259         my $refs = git_get_references();
4260         my $ref = format_ref_marker($refs, $hash_base);
4261         git_header_html();
4262         my $basedir = '';
4263         my ($have_blame) = gitweb_check_feature('blame');
4264         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4265                 my @views_nav = ();
4266                 if (defined $file_name) {
4267                         push @views_nav,
4268                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4269                                                        hash=>$hash, file_name=>$file_name)},
4270                                         "history"),
4271                                 $cgi->a({-href => href(action=>"tree",
4272                                                        hash_base=>"HEAD", file_name=>$file_name)},
4273                                         "HEAD"),
4274                 }
4275                 my $snapshot_links = format_snapshot_links($hash);
4276                 if (defined $snapshot_links) {
4277                         # FIXME: Should be available when we have no hash base as well.
4278                         push @views_nav, $snapshot_links;
4279                 }
4280                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4281                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4282         } else {
4283                 undef $hash_base;
4284                 print "<div class=\"page_nav\">\n";
4285                 print "<br/><br/></div>\n";
4286                 print "<div class=\"title\">$hash</div>\n";
4287         }
4288         if (defined $file_name) {
4289                 $basedir = $file_name;
4290                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4291                         $basedir .= '/';
4292                 }
4293         }
4294         git_print_page_path($file_name, 'tree', $hash_base);
4295         print "<div class=\"page_body\">\n";
4296         print "<table cellspacing=\"0\">\n";
4297         my $alternate = 1;
4298         # '..' (top directory) link if possible
4299         if (defined $hash_base &&
4300             defined $file_name && $file_name =~ m![^/]+$!) {
4301                 if ($alternate) {
4302                         print "<tr class=\"dark\">\n";
4303                 } else {
4304                         print "<tr class=\"light\">\n";
4305                 }
4306                 $alternate ^= 1;
4307
4308                 my $up = $file_name;
4309                 $up =~ s!/?[^/]+$!!;
4310                 undef $up unless $up;
4311                 # based on git_print_tree_entry
4312                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4313                 print '<td class="list">';
4314                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4315                                              file_name=>$up)},
4316                               "..");
4317                 print "</td>\n";
4318                 print "<td class=\"link\"></td>\n";
4319
4320                 print "</tr>\n";
4321         }
4322         foreach my $line (@entries) {
4323                 my %t = parse_ls_tree_line($line, -z => 1);
4324
4325                 if ($alternate) {
4326                         print "<tr class=\"dark\">\n";
4327                 } else {
4328                         print "<tr class=\"light\">\n";
4329                 }
4330                 $alternate ^= 1;
4331
4332                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4333
4334                 print "</tr>\n";
4335         }
4336         print "</table>\n" .
4337               "</div>";
4338         git_footer_html();
4339 }
4340
4341 sub git_snapshot {
4342         my @supported_fmts = gitweb_check_feature('snapshot');
4343         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4344
4345         my $format = $cgi->param('sf');
4346         if (!@supported_fmts) {
4347                 die_error('403 Permission denied', "Permission denied");
4348         }
4349         # default to first supported snapshot format
4350         $format ||= $supported_fmts[0];
4351         if ($format !~ m/^[a-z0-9]+$/) {
4352                 die_error(undef, "Invalid snapshot format parameter");
4353         } elsif (!exists($known_snapshot_formats{$format})) {
4354                 die_error(undef, "Unknown snapshot format");
4355         } elsif (!grep($_ eq $format, @supported_fmts)) {
4356                 die_error(undef, "Unsupported snapshot format");
4357         }
4358
4359         if (!defined $hash) {
4360                 $hash = git_get_head_hash($project);
4361         }
4362
4363         my $git_command = git_cmd_str();
4364         my $name = $project;
4365         $name =~ s,([^/])/*\.git$,$1,;
4366         $name = basename($name);
4367         my $filename = to_utf8($name);
4368         $name =~ s/\047/\047\\\047\047/g;
4369         my $cmd;
4370         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4371         $cmd = "$git_command archive " .
4372                 "--format=$known_snapshot_formats{$format}{'format'} " .
4373                 "--prefix=\'$name\'/ $hash";
4374         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4375                 $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4376         }
4377
4378         print $cgi->header(
4379                 -type => $known_snapshot_formats{$format}{'type'},
4380                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4381                 -status => '200 OK');
4382
4383         open my $fd, "-|", $cmd
4384                 or die_error(undef, "Execute git-archive failed");
4385         binmode STDOUT, ':raw';
4386         print <$fd>;
4387         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4388         close $fd;
4389 }
4390
4391 sub git_log {
4392         my $head = git_get_head_hash($project);
4393         if (!defined $hash) {
4394                 $hash = $head;
4395         }
4396         if (!defined $page) {
4397                 $page = 0;
4398         }
4399         my $refs = git_get_references();
4400
4401         my @commitlist = parse_commits($hash, 101, (100 * $page));
4402
4403         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4404
4405         git_header_html();
4406         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4407
4408         if (!@commitlist) {
4409                 my %co = parse_commit($hash);
4410
4411                 git_print_header_div('summary', $project);
4412                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4413         }
4414         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4415         for (my $i = 0; $i <= $to; $i++) {
4416                 my %co = %{$commitlist[$i]};
4417                 next if !%co;
4418                 my $commit = $co{'id'};
4419                 my $ref = format_ref_marker($refs, $commit);
4420                 my %ad = parse_date($co{'author_epoch'});
4421                 git_print_header_div('commit',
4422                                "<span class=\"age\">$co{'age_string'}</span>" .
4423                                esc_html($co{'title'}) . $ref,
4424                                $commit);
4425                 print "<div class=\"title_text\">\n" .
4426                       "<div class=\"log_link\">\n" .
4427                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4428                       " | " .
4429                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4430                       " | " .
4431                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4432                       "<br/>\n" .
4433                       "</div>\n" .
4434                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4435                       "</div>\n";
4436
4437                 print "<div class=\"log_body\">\n";
4438                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4439                 print "</div>\n";
4440         }
4441         if ($#commitlist >= 100) {
4442                 print "<div class=\"page_nav\">\n";
4443                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4444                                -accesskey => "n", -title => "Alt-n"}, "next");
4445                 print "</div>\n";
4446         }
4447         git_footer_html();
4448 }
4449
4450 sub git_commit {
4451         $hash ||= $hash_base || "HEAD";
4452         my %co = parse_commit($hash);
4453         if (!%co) {
4454                 die_error(undef, "Unknown commit object");
4455         }
4456         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4457         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4458
4459         my $parent  = $co{'parent'};
4460         my $parents = $co{'parents'}; # listref
4461
4462         # we need to prepare $formats_nav before any parameter munging
4463         my $formats_nav;
4464         if (!defined $parent) {
4465                 # --root commitdiff
4466                 $formats_nav .= '(initial)';
4467         } elsif (@$parents == 1) {
4468                 # single parent commit
4469                 $formats_nav .=
4470                         '(parent: ' .
4471                         $cgi->a({-href => href(action=>"commit",
4472                                                hash=>$parent)},
4473                                 esc_html(substr($parent, 0, 7))) .
4474                         ')';
4475         } else {
4476                 # merge commit
4477                 $formats_nav .=
4478                         '(merge: ' .
4479                         join(' ', map {
4480                                 $cgi->a({-href => href(action=>"commit",
4481                                                        hash=>$_)},
4482                                         esc_html(substr($_, 0, 7)));
4483                         } @$parents ) .
4484                         ')';
4485         }
4486
4487         if (!defined $parent) {
4488                 $parent = "--root";
4489         }
4490         my @difftree;
4491         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4492                 @diff_opts,
4493                 (@$parents <= 1 ? $parent : '-c'),
4494                 $hash, "--"
4495                 or die_error(undef, "Open git-diff-tree failed");
4496         @difftree = map { chomp; $_ } <$fd>;
4497         close $fd or die_error(undef, "Reading git-diff-tree failed");
4498
4499         # non-textual hash id's can be cached
4500         my $expires;
4501         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4502                 $expires = "+1d";
4503         }
4504         my $refs = git_get_references();
4505         my $ref = format_ref_marker($refs, $co{'id'});
4506
4507         git_header_html(undef, $expires);
4508         git_print_page_nav('commit', '',
4509                            $hash, $co{'tree'}, $hash,
4510                            $formats_nav);
4511
4512         if (defined $co{'parent'}) {
4513                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4514         } else {
4515                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4516         }
4517         print "<div class=\"title_text\">\n" .
4518               "<table cellspacing=\"0\">\n";
4519         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4520               "<tr>" .
4521               "<td></td><td> $ad{'rfc2822'}";
4522         if ($ad{'hour_local'} < 6) {
4523                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4524                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4525         } else {
4526                 printf(" (%02d:%02d %s)",
4527                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4528         }
4529         print "</td>" .
4530               "</tr>\n";
4531         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4532         print "<tr><td></td><td> $cd{'rfc2822'}" .
4533               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4534               "</td></tr>\n";
4535         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4536         print "<tr>" .
4537               "<td>tree</td>" .
4538               "<td class=\"sha1\">" .
4539               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4540                        class => "list"}, $co{'tree'}) .
4541               "</td>" .
4542               "<td class=\"link\">" .
4543               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4544                       "tree");
4545         my $snapshot_links = format_snapshot_links($hash);
4546         if (defined $snapshot_links) {
4547                 print " | " . $snapshot_links;
4548         }
4549         print "</td>" .
4550               "</tr>\n";
4551
4552         foreach my $par (@$parents) {
4553                 print "<tr>" .
4554                       "<td>parent</td>" .
4555                       "<td class=\"sha1\">" .
4556                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4557                                class => "list"}, $par) .
4558                       "</td>" .
4559                       "<td class=\"link\">" .
4560                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4561                       " | " .
4562                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4563                       "</td>" .
4564                       "</tr>\n";
4565         }
4566         print "</table>".
4567               "</div>\n";
4568
4569         print "<div class=\"page_body\">\n";
4570         git_print_log($co{'comment'});
4571         print "</div>\n";
4572
4573         git_difftree_body(\@difftree, $hash, @$parents);
4574
4575         git_footer_html();
4576 }
4577
4578 sub git_object {
4579         # object is defined by:
4580         # - hash or hash_base alone
4581         # - hash_base and file_name
4582         my $type;
4583
4584         # - hash or hash_base alone
4585         if ($hash || ($hash_base && !defined $file_name)) {
4586                 my $object_id = $hash || $hash_base;
4587
4588                 my $git_command = git_cmd_str();
4589                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4590                         or die_error('404 Not Found', "Object does not exist");
4591                 $type = <$fd>;
4592                 chomp $type;
4593                 close $fd
4594                         or die_error('404 Not Found', "Object does not exist");
4595
4596         # - hash_base and file_name
4597         } elsif ($hash_base && defined $file_name) {
4598                 $file_name =~ s,/+$,,;
4599
4600                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4601                         or die_error('404 Not Found', "Base object does not exist");
4602
4603                 # here errors should not hapen
4604                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4605                         or die_error(undef, "Open git-ls-tree failed");
4606                 my $line = <$fd>;
4607                 close $fd;
4608
4609                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4610                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4611                         die_error('404 Not Found', "File or directory for given base does not exist");
4612                 }
4613                 $type = $2;
4614                 $hash = $3;
4615         } else {
4616                 die_error('404 Not Found', "Not enough information to find object");
4617         }
4618
4619         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4620                                           hash=>$hash, hash_base=>$hash_base,
4621                                           file_name=>$file_name),
4622                              -status => '302 Found');
4623 }
4624
4625 sub git_blobdiff {
4626         my $format = shift || 'html';
4627
4628         my $fd;
4629         my @difftree;
4630         my %diffinfo;
4631         my $expires;
4632
4633         # preparing $fd and %diffinfo for git_patchset_body
4634         # new style URI
4635         if (defined $hash_base && defined $hash_parent_base) {
4636                 if (defined $file_name) {
4637                         # read raw output
4638                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4639                                 $hash_parent_base, $hash_base,
4640                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4641                                 or die_error(undef, "Open git-diff-tree failed");
4642                         @difftree = map { chomp; $_ } <$fd>;
4643                         close $fd
4644                                 or die_error(undef, "Reading git-diff-tree failed");
4645                         @difftree
4646                                 or die_error('404 Not Found', "Blob diff not found");
4647
4648                 } elsif (defined $hash &&
4649                          $hash =~ /[0-9a-fA-F]{40}/) {
4650                         # try to find filename from $hash
4651
4652                         # read filtered raw output
4653                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4654                                 $hash_parent_base, $hash_base, "--"
4655                                 or die_error(undef, "Open git-diff-tree failed");
4656                         @difftree =
4657                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4658                                 # $hash == to_id
4659                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4660                                 map { chomp; $_ } <$fd>;
4661                         close $fd
4662                                 or die_error(undef, "Reading git-diff-tree failed");
4663                         @difftree
4664                                 or die_error('404 Not Found', "Blob diff not found");
4665
4666                 } else {
4667                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4668                 }
4669
4670                 if (@difftree > 1) {
4671                         die_error('404 Not Found', "Ambiguous blob diff specification");
4672                 }
4673
4674                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4675                 $file_parent ||= $diffinfo{'from_file'} || $file_name;
4676                 $file_name   ||= $diffinfo{'to_file'};
4677
4678                 $hash_parent ||= $diffinfo{'from_id'};
4679                 $hash        ||= $diffinfo{'to_id'};
4680
4681                 # non-textual hash id's can be cached
4682                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4683                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4684                         $expires = '+1d';
4685                 }
4686
4687                 # open patch output
4688                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4689                         '-p', ($format eq 'html' ? "--full-index" : ()),
4690                         $hash_parent_base, $hash_base,
4691                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4692                         or die_error(undef, "Open git-diff-tree failed");
4693         }
4694
4695         # old/legacy style URI
4696         if (!%diffinfo && # if new style URI failed
4697             defined $hash && defined $hash_parent) {
4698                 # fake git-diff-tree raw output
4699                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4700                 $diffinfo{'from_id'} = $hash_parent;
4701                 $diffinfo{'to_id'}   = $hash;
4702                 if (defined $file_name) {
4703                         if (defined $file_parent) {
4704                                 $diffinfo{'status'} = '2';
4705                                 $diffinfo{'from_file'} = $file_parent;
4706                                 $diffinfo{'to_file'}   = $file_name;
4707                         } else { # assume not renamed
4708                                 $diffinfo{'status'} = '1';
4709                                 $diffinfo{'from_file'} = $file_name;
4710                                 $diffinfo{'to_file'}   = $file_name;
4711                         }
4712                 } else { # no filename given
4713                         $diffinfo{'status'} = '2';
4714                         $diffinfo{'from_file'} = $hash_parent;
4715                         $diffinfo{'to_file'}   = $hash;
4716                 }
4717
4718                 # non-textual hash id's can be cached
4719                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4720                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4721                         $expires = '+1d';
4722                 }
4723
4724                 # open patch output
4725                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4726                         '-p', ($format eq 'html' ? "--full-index" : ()),
4727                         $hash_parent, $hash, "--"
4728                         or die_error(undef, "Open git-diff failed");
4729         } else  {
4730                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4731                         unless %diffinfo;
4732         }
4733
4734         # header
4735         if ($format eq 'html') {
4736                 my $formats_nav =
4737                         $cgi->a({-href => href(action=>"blobdiff_plain",
4738                                                hash=>$hash, hash_parent=>$hash_parent,
4739                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4740                                                file_name=>$file_name, file_parent=>$file_parent)},
4741                                 "raw");
4742                 git_header_html(undef, $expires);
4743                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4744                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4745                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4746                 } else {
4747                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4748                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4749                 }
4750                 if (defined $file_name) {
4751                         git_print_page_path($file_name, "blob", $hash_base);
4752                 } else {
4753                         print "<div class=\"page_path\"></div>\n";
4754                 }
4755
4756         } elsif ($format eq 'plain') {
4757                 print $cgi->header(
4758                         -type => 'text/plain',
4759                         -charset => 'utf-8',
4760                         -expires => $expires,
4761                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4762
4763                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4764
4765         } else {
4766                 die_error(undef, "Unknown blobdiff format");
4767         }
4768
4769         # patch
4770         if ($format eq 'html') {
4771                 print "<div class=\"page_body\">\n";
4772
4773                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4774                 close $fd;
4775
4776                 print "</div>\n"; # class="page_body"
4777                 git_footer_html();
4778
4779         } else {
4780                 while (my $line = <$fd>) {
4781                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4782                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4783
4784                         print $line;
4785
4786                         last if $line =~ m!^\+\+\+!;
4787                 }
4788                 local $/ = undef;
4789                 print <$fd>;
4790                 close $fd;
4791         }
4792 }
4793
4794 sub git_blobdiff_plain {
4795         git_blobdiff('plain');
4796 }
4797
4798 sub git_commitdiff {
4799         my $format = shift || 'html';
4800         $hash ||= $hash_base || "HEAD";
4801         my %co = parse_commit($hash);
4802         if (!%co) {
4803                 die_error(undef, "Unknown commit object");
4804         }
4805
4806         # choose format for commitdiff for merge
4807         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4808                 $hash_parent = '--cc';
4809         }
4810         # we need to prepare $formats_nav before almost any parameter munging
4811         my $formats_nav;
4812         if ($format eq 'html') {
4813                 $formats_nav =
4814                         $cgi->a({-href => href(action=>"commitdiff_plain",
4815                                                hash=>$hash, hash_parent=>$hash_parent)},
4816                                 "raw");
4817
4818                 if (defined $hash_parent &&
4819                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4820                         # commitdiff with two commits given
4821                         my $hash_parent_short = $hash_parent;
4822                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4823                                 $hash_parent_short = substr($hash_parent, 0, 7);
4824                         }
4825                         $formats_nav .=
4826                                 ' (from';
4827                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4828                                 if ($co{'parents'}[$i] eq $hash_parent) {
4829                                         $formats_nav .= ' parent ' . ($i+1);
4830                                         last;
4831                                 }
4832                         }
4833                         $formats_nav .= ': ' .
4834                                 $cgi->a({-href => href(action=>"commitdiff",
4835                                                        hash=>$hash_parent)},
4836                                         esc_html($hash_parent_short)) .
4837                                 ')';
4838                 } elsif (!$co{'parent'}) {
4839                         # --root commitdiff
4840                         $formats_nav .= ' (initial)';
4841                 } elsif (scalar @{$co{'parents'}} == 1) {
4842                         # single parent commit
4843                         $formats_nav .=
4844                                 ' (parent: ' .
4845                                 $cgi->a({-href => href(action=>"commitdiff",
4846                                                        hash=>$co{'parent'})},
4847                                         esc_html(substr($co{'parent'}, 0, 7))) .
4848                                 ')';
4849                 } else {
4850                         # merge commit
4851                         if ($hash_parent eq '--cc') {
4852                                 $formats_nav .= ' | ' .
4853                                         $cgi->a({-href => href(action=>"commitdiff",
4854                                                                hash=>$hash, hash_parent=>'-c')},
4855                                                 'combined');
4856                         } else { # $hash_parent eq '-c'
4857                                 $formats_nav .= ' | ' .
4858                                         $cgi->a({-href => href(action=>"commitdiff",
4859                                                                hash=>$hash, hash_parent=>'--cc')},
4860                                                 'compact');
4861                         }
4862                         $formats_nav .=
4863                                 ' (merge: ' .
4864                                 join(' ', map {
4865                                         $cgi->a({-href => href(action=>"commitdiff",
4866                                                                hash=>$_)},
4867                                                 esc_html(substr($_, 0, 7)));
4868                                 } @{$co{'parents'}} ) .
4869                                 ')';
4870                 }
4871         }
4872
4873         my $hash_parent_param = $hash_parent;
4874         if (!defined $hash_parent_param) {
4875                 # --cc for multiple parents, --root for parentless
4876                 $hash_parent_param =
4877                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4878         }
4879
4880         # read commitdiff
4881         my $fd;
4882         my @difftree;
4883         if ($format eq 'html') {
4884                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4885                         "--no-commit-id", "--patch-with-raw", "--full-index",
4886                         $hash_parent_param, $hash, "--"
4887                         or die_error(undef, "Open git-diff-tree failed");
4888
4889                 while (my $line = <$fd>) {
4890                         chomp $line;
4891                         # empty line ends raw part of diff-tree output
4892                         last unless $line;
4893                         push @difftree, scalar parse_difftree_raw_line($line);
4894                 }
4895
4896         } elsif ($format eq 'plain') {
4897                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4898                         '-p', $hash_parent_param, $hash, "--"
4899                         or die_error(undef, "Open git-diff-tree failed");
4900
4901         } else {
4902                 die_error(undef, "Unknown commitdiff format");
4903         }
4904
4905         # non-textual hash id's can be cached
4906         my $expires;
4907         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4908                 $expires = "+1d";
4909         }
4910
4911         # write commit message
4912         if ($format eq 'html') {
4913                 my $refs = git_get_references();
4914                 my $ref = format_ref_marker($refs, $co{'id'});
4915
4916                 git_header_html(undef, $expires);
4917                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4918                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4919                 git_print_authorship(\%co);
4920                 print "<div class=\"page_body\">\n";
4921                 if (@{$co{'comment'}} > 1) {
4922                         print "<div class=\"log\">\n";
4923                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4924                         print "</div>\n"; # class="log"
4925                 }
4926
4927         } elsif ($format eq 'plain') {
4928                 my $refs = git_get_references("tags");
4929                 my $tagname = git_get_rev_name_tags($hash);
4930                 my $filename = basename($project) . "-$hash.patch";
4931
4932                 print $cgi->header(
4933                         -type => 'text/plain',
4934                         -charset => 'utf-8',
4935                         -expires => $expires,
4936                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4937                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4938                 print <<TEXT;
4939 From: $co{'author'}
4940 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4941 Subject: $co{'title'}
4942 TEXT
4943                 print "X-Git-Tag: $tagname\n" if $tagname;
4944                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4945
4946                 foreach my $line (@{$co{'comment'}}) {
4947                         print "$line\n";
4948                 }
4949                 print "---\n\n";
4950         }
4951
4952         # write patch
4953         if ($format eq 'html') {
4954                 my $use_parents = !defined $hash_parent ||
4955                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4956                 git_difftree_body(\@difftree, $hash,
4957                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4958                 print "<br/>\n";
4959
4960                 git_patchset_body($fd, \@difftree, $hash,
4961                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4962                 close $fd;
4963                 print "</div>\n"; # class="page_body"
4964                 git_footer_html();
4965
4966         } elsif ($format eq 'plain') {
4967                 local $/ = undef;
4968                 print <$fd>;
4969                 close $fd
4970                         or print "Reading git-diff-tree failed\n";
4971         }
4972 }
4973
4974 sub git_commitdiff_plain {
4975         git_commitdiff('plain');
4976 }
4977
4978 sub git_history {
4979         if (!defined $hash_base) {
4980                 $hash_base = git_get_head_hash($project);
4981         }
4982         if (!defined $page) {
4983                 $page = 0;
4984         }
4985         my $ftype;
4986         my %co = parse_commit($hash_base);
4987         if (!%co) {
4988                 die_error(undef, "Unknown commit object");
4989         }
4990
4991         my $refs = git_get_references();
4992         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4993
4994         if (!defined $hash && defined $file_name) {
4995                 $hash = git_get_hash_by_path($hash_base, $file_name);
4996         }
4997         if (defined $hash) {
4998                 $ftype = git_get_type($hash);
4999         }
5000
5001         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5002
5003         my $paging_nav = '';
5004         if ($page > 0) {
5005                 $paging_nav .=
5006                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5007                                                file_name=>$file_name)},
5008                                 "first");
5009                 $paging_nav .= " &sdot; " .
5010                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5011                                                file_name=>$file_name, page=>$page-1),
5012                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5013         } else {
5014                 $paging_nav .= "first";
5015                 $paging_nav .= " &sdot; prev";
5016         }
5017         if ($#commitlist >= 100) {
5018                 $paging_nav .= " &sdot; " .
5019                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5020                                                file_name=>$file_name, page=>$page+1),
5021                                  -accesskey => "n", -title => "Alt-n"}, "next");
5022         } else {
5023                 $paging_nav .= " &sdot; next";
5024         }
5025         my $next_link = '';
5026         if ($#commitlist >= 100) {
5027                 $next_link =
5028                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5029                                                file_name=>$file_name, page=>$page+1),
5030                                  -accesskey => "n", -title => "Alt-n"}, "next");
5031         }
5032
5033         git_header_html();
5034         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5035         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5036         git_print_page_path($file_name, $ftype, $hash_base);
5037
5038         git_history_body(\@commitlist, 0, 99,
5039                          $refs, $hash_base, $ftype, $next_link);
5040
5041         git_footer_html();
5042 }
5043
5044 sub git_search {
5045         my ($have_search) = gitweb_check_feature('search');
5046         if (!$have_search) {
5047                 die_error('403 Permission denied', "Permission denied");
5048         }
5049         if (!defined $searchtext) {
5050                 die_error(undef, "Text field empty");
5051         }
5052         if (!defined $hash) {
5053                 $hash = git_get_head_hash($project);
5054         }
5055         my %co = parse_commit($hash);
5056         if (!%co) {
5057                 die_error(undef, "Unknown commit object");
5058         }
5059         if (!defined $page) {
5060                 $page = 0;
5061         }
5062
5063         $searchtype ||= 'commit';
5064         if ($searchtype eq 'pickaxe') {
5065                 # pickaxe may take all resources of your box and run for several minutes
5066                 # with every query - so decide by yourself how public you make this feature
5067                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5068                 if (!$have_pickaxe) {
5069                         die_error('403 Permission denied', "Permission denied");
5070                 }
5071         }
5072         if ($searchtype eq 'grep') {
5073                 my ($have_grep) = gitweb_check_feature('grep');
5074                 if (!$have_grep) {
5075                         die_error('403 Permission denied', "Permission denied");
5076                 }
5077         }
5078
5079         git_header_html();
5080
5081         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5082                 my $greptype;
5083                 if ($searchtype eq 'commit') {
5084                         $greptype = "--grep=";
5085                 } elsif ($searchtype eq 'author') {
5086                         $greptype = "--author=";
5087                 } elsif ($searchtype eq 'committer') {
5088                         $greptype = "--committer=";
5089                 }
5090                 $greptype .= $search_regexp;
5091                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5092
5093                 my $paging_nav = '';
5094                 if ($page > 0) {
5095                         $paging_nav .=
5096                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5097                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
5098                                         "first");
5099                         $paging_nav .= " &sdot; " .
5100                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5101                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5102                                                        page=>$page-1),
5103                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5104                 } else {
5105                         $paging_nav .= "first";
5106                         $paging_nav .= " &sdot; prev";
5107                 }
5108                 if ($#commitlist >= 100) {
5109                         $paging_nav .= " &sdot; " .
5110                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5111                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5112                                                        page=>$page+1),
5113                                          -accesskey => "n", -title => "Alt-n"}, "next");
5114                 } else {
5115                         $paging_nav .= " &sdot; next";
5116                 }
5117                 my $next_link = '';
5118                 if ($#commitlist >= 100) {
5119                         $next_link =
5120                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5121                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5122                                                        page=>$page+1),
5123                                          -accesskey => "n", -title => "Alt-n"}, "next");
5124                 }
5125
5126                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5127                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5128                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5129         }
5130
5131         if ($searchtype eq 'pickaxe') {
5132                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5133                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5134
5135                 print "<table cellspacing=\"0\">\n";
5136                 my $alternate = 1;
5137                 $/ = "\n";
5138                 my $git_command = git_cmd_str();
5139                 my $searchqtext = $searchtext;
5140                 $searchqtext =~ s/'/'\\''/;
5141                 open my $fd, "-|", "$git_command rev-list $hash | " .
5142                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5143                 undef %co;
5144                 my @files;
5145                 while (my $line = <$fd>) {
5146                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5147                                 my %set;
5148                                 $set{'file'} = $6;
5149                                 $set{'from_id'} = $3;
5150                                 $set{'to_id'} = $4;
5151                                 $set{'id'} = $set{'to_id'};
5152                                 if ($set{'id'} =~ m/0{40}/) {
5153                                         $set{'id'} = $set{'from_id'};
5154                                 }
5155                                 if ($set{'id'} =~ m/0{40}/) {
5156                                         next;
5157                                 }
5158                                 push @files, \%set;
5159                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5160                                 if (%co) {
5161                                         if ($alternate) {
5162                                                 print "<tr class=\"dark\">\n";
5163                                         } else {
5164                                                 print "<tr class=\"light\">\n";
5165                                         }
5166                                         $alternate ^= 1;
5167                                         my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5168                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5169                                               "<td><i>" . $author . "</i></td>\n" .
5170                                               "<td>" .
5171                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5172                                                       -class => "list subject"},
5173                                                       chop_and_escape_str($co{'title'}, 50) . "<br/>");
5174                                         while (my $setref = shift @files) {
5175                                                 my %set = %$setref;
5176                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5177                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5178                                                               -class => "list"},
5179                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5180                                                       "<br/>\n";
5181                                         }
5182                                         print "</td>\n" .
5183                                               "<td class=\"link\">" .
5184                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5185                                               " | " .
5186                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5187                                         print "</td>\n" .
5188                                               "</tr>\n";
5189                                 }
5190                                 %co = parse_commit($1);
5191                         }
5192                 }
5193                 close $fd;
5194
5195                 print "</table>\n";
5196         }
5197
5198         if ($searchtype eq 'grep') {
5199                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5200                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5201
5202                 print "<table cellspacing=\"0\">\n";
5203                 my $alternate = 1;
5204                 my $matches = 0;
5205                 $/ = "\n";
5206                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5207                 my $lastfile = '';
5208                 while (my $line = <$fd>) {
5209                         chomp $line;
5210                         my ($file, $lno, $ltext, $binary);
5211                         last if ($matches++ > 1000);
5212                         if ($line =~ /^Binary file (.+) matches$/) {
5213                                 $file = $1;
5214                                 $binary = 1;
5215                         } else {
5216                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5217                         }
5218                         if ($file ne $lastfile) {
5219                                 $lastfile and print "</td></tr>\n";
5220                                 if ($alternate++) {
5221                                         print "<tr class=\"dark\">\n";
5222                                 } else {
5223                                         print "<tr class=\"light\">\n";
5224                                 }
5225                                 print "<td class=\"list\">".
5226                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5227                                                                file_name=>"$file"),
5228                                                 -class => "list"}, esc_path($file));
5229                                 print "</td><td>\n";
5230                                 $lastfile = $file;
5231                         }
5232                         if ($binary) {
5233                                 print "<div class=\"binary\">Binary file</div>\n";
5234                         } else {
5235                                 $ltext = untabify($ltext);
5236                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5237                                         $ltext = esc_html($1, -nbsp=>1);
5238                                         $ltext .= '<span class="match">';
5239                                         $ltext .= esc_html($2, -nbsp=>1);
5240                                         $ltext .= '</span>';
5241                                         $ltext .= esc_html($3, -nbsp=>1);
5242                                 } else {
5243                                         $ltext = esc_html($ltext, -nbsp=>1);
5244                                 }
5245                                 print "<div class=\"pre\">" .
5246                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5247                                                                file_name=>"$file").'#l'.$lno,
5248                                                 -class => "linenr"}, sprintf('%4i', $lno))
5249                                         . ' ' .  $ltext . "</div>\n";
5250                         }
5251                 }
5252                 if ($lastfile) {
5253                         print "</td></tr>\n";
5254                         if ($matches > 1000) {
5255                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5256                         }
5257                 } else {
5258                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5259                 }
5260                 close $fd;
5261
5262                 print "</table>\n";
5263         }
5264         git_footer_html();
5265 }
5266
5267 sub git_search_help {
5268         git_header_html();
5269         git_print_page_nav('','', $hash,$hash,$hash);
5270         print <<EOT;
5271 <dl>
5272 <dt><b>commit</b></dt>
5273 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5274 EOT
5275         my ($have_grep) = gitweb_check_feature('grep');
5276         if ($have_grep) {
5277                 print <<EOT;
5278 <dt><b>grep</b></dt>
5279 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5280     a different one) are searched for the given
5281 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5282 (POSIX extended) and the matches are listed. On large
5283 trees, this search can take a while and put some strain on the server, so please use it with
5284 some consideration.</dd>
5285 EOT
5286         }
5287         print <<EOT;
5288 <dt><b>author</b></dt>
5289 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5290 <dt><b>committer</b></dt>
5291 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5292 EOT
5293         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5294         if ($have_pickaxe) {
5295                 print <<EOT;
5296 <dt><b>pickaxe</b></dt>
5297 <dd>All commits that caused the string to appear or disappear from any file (changes that
5298 added, removed or "modified" the string) will be listed. This search can take a while and
5299 takes a lot of strain on the server, so please use it wisely.</dd>
5300 EOT
5301         }
5302         print "</dl>\n";
5303         git_footer_html();
5304 }
5305
5306 sub git_shortlog {
5307         my $head = git_get_head_hash($project);
5308         if (!defined $hash) {
5309                 $hash = $head;
5310         }
5311         if (!defined $page) {
5312                 $page = 0;
5313         }
5314         my $refs = git_get_references();
5315
5316         my @commitlist = parse_commits($hash, 101, (100 * $page));
5317
5318         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5319         my $next_link = '';
5320         if ($#commitlist >= 100) {
5321                 $next_link =
5322                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5323                                  -accesskey => "n", -title => "Alt-n"}, "next");
5324         }
5325
5326         git_header_html();
5327         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5328         git_print_header_div('summary', $project);
5329
5330         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5331
5332         git_footer_html();
5333 }
5334
5335 ## ......................................................................
5336 ## feeds (RSS, Atom; OPML)
5337
5338 sub git_feed {
5339         my $format = shift || 'atom';
5340         my ($have_blame) = gitweb_check_feature('blame');
5341
5342         # Atom: http://www.atomenabled.org/developers/syndication/
5343         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5344         if ($format ne 'rss' && $format ne 'atom') {
5345                 die_error(undef, "Unknown web feed format");
5346         }
5347
5348         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5349         my $head = $hash || 'HEAD';
5350         my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5351
5352         my %latest_commit;
5353         my %latest_date;
5354         my $content_type = "application/$format+xml";
5355         if (defined $cgi->http('HTTP_ACCEPT') &&
5356                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5357                 # browser (feed reader) prefers text/xml
5358                 $content_type = 'text/xml';
5359         }
5360         if (defined($commitlist[0])) {
5361                 %latest_commit = %{$commitlist[0]};
5362                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5363                 print $cgi->header(
5364                         -type => $content_type,
5365                         -charset => 'utf-8',
5366                         -last_modified => $latest_date{'rfc2822'});
5367         } else {
5368                 print $cgi->header(
5369                         -type => $content_type,
5370                         -charset => 'utf-8');
5371         }
5372
5373         # Optimization: skip generating the body if client asks only
5374         # for Last-Modified date.
5375         return if ($cgi->request_method() eq 'HEAD');
5376
5377         # header variables
5378         my $title = "$site_name - $project/$action";
5379         my $feed_type = 'log';
5380         if (defined $hash) {
5381                 $title .= " - '$hash'";
5382                 $feed_type = 'branch log';
5383                 if (defined $file_name) {
5384                         $title .= " :: $file_name";
5385                         $feed_type = 'history';
5386                 }
5387         } elsif (defined $file_name) {
5388                 $title .= " - $file_name";
5389                 $feed_type = 'history';
5390         }
5391         $title .= " $feed_type";
5392         my $descr = git_get_project_description($project);
5393         if (defined $descr) {
5394                 $descr = esc_html($descr);
5395         } else {
5396                 $descr = "$project " .
5397                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5398                          " feed";
5399         }
5400         my $owner = git_get_project_owner($project);
5401         $owner = esc_html($owner);
5402
5403         #header
5404         my $alt_url;
5405         if (defined $file_name) {
5406                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5407         } elsif (defined $hash) {
5408                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5409         } else {
5410                 $alt_url = href(-full=>1, action=>"summary");
5411         }
5412         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5413         if ($format eq 'rss') {
5414                 print <<XML;
5415 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5416 <channel>
5417 XML
5418                 print "<title>$title</title>\n" .
5419                       "<link>$alt_url</link>\n" .
5420                       "<description>$descr</description>\n" .
5421                       "<language>en</language>\n";
5422         } elsif ($format eq 'atom') {
5423                 print <<XML;
5424 <feed xmlns="http://www.w3.org/2005/Atom">
5425 XML
5426                 print "<title>$title</title>\n" .
5427                       "<subtitle>$descr</subtitle>\n" .
5428                       '<link rel="alternate" type="text/html" href="' .
5429                       $alt_url . '" />' . "\n" .
5430                       '<link rel="self" type="' . $content_type . '" href="' .
5431                       $cgi->self_url() . '" />' . "\n" .
5432                       "<id>" . href(-full=>1) . "</id>\n" .
5433                       # use project owner for feed author
5434                       "<author><name>$owner</name></author>\n";
5435                 if (defined $favicon) {
5436                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5437                 }
5438                 if (defined $logo_url) {
5439                         # not twice as wide as tall: 72 x 27 pixels
5440                         print "<logo>" . esc_url($logo) . "</logo>\n";
5441                 }
5442                 if (! %latest_date) {
5443                         # dummy date to keep the feed valid until commits trickle in:
5444                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5445                 } else {
5446                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5447                 }
5448         }
5449
5450         # contents
5451         for (my $i = 0; $i <= $#commitlist; $i++) {
5452                 my %co = %{$commitlist[$i]};
5453                 my $commit = $co{'id'};
5454                 # we read 150, we always show 30 and the ones more recent than 48 hours
5455                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5456                         last;
5457                 }
5458                 my %cd = parse_date($co{'author_epoch'});
5459
5460                 # get list of changed files
5461                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5462                         $co{'parent'} || "--root",
5463                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5464                         or next;
5465                 my @difftree = map { chomp; $_ } <$fd>;
5466                 close $fd
5467                         or next;
5468
5469                 # print element (entry, item)
5470                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5471                 if ($format eq 'rss') {
5472                         print "<item>\n" .
5473                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5474                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5475                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5476                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5477                               "<link>$co_url</link>\n" .
5478                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5479                               "<content:encoded>" .
5480                               "<![CDATA[\n";
5481                 } elsif ($format eq 'atom') {
5482                         print "<entry>\n" .
5483                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5484                               "<updated>$cd{'iso-8601'}</updated>\n" .
5485                               "<author>\n" .
5486                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5487                         if ($co{'author_email'}) {
5488                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5489                         }
5490                         print "</author>\n" .
5491                               # use committer for contributor
5492                               "<contributor>\n" .
5493                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5494                         if ($co{'committer_email'}) {
5495                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5496                         }
5497                         print "</contributor>\n" .
5498                               "<published>$cd{'iso-8601'}</published>\n" .
5499                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5500                               "<id>$co_url</id>\n" .
5501                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5502                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5503                 }
5504                 my $comment = $co{'comment'};
5505                 print "<pre>\n";
5506                 foreach my $line (@$comment) {
5507                         $line = esc_html($line);
5508                         print "$line\n";
5509                 }
5510                 print "</pre><ul>\n";
5511                 foreach my $difftree_line (@difftree) {
5512                         my %difftree = parse_difftree_raw_line($difftree_line);
5513                         next if !$difftree{'from_id'};
5514
5515                         my $file = $difftree{'file'} || $difftree{'to_file'};
5516
5517                         print "<li>" .
5518                               "[" .
5519                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5520                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5521                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5522                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5523                                       -title => "diff"}, 'D');
5524                         if ($have_blame) {
5525                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5526                                                              file_name=>$file, hash_base=>$commit),
5527                                               -title => "blame"}, 'B');
5528                         }
5529                         # if this is not a feed of a file history
5530                         if (!defined $file_name || $file_name ne $file) {
5531                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5532                                                              file_name=>$file, hash=>$commit),
5533                                               -title => "history"}, 'H');
5534                         }
5535                         $file = esc_path($file);
5536                         print "] ".
5537                               "$file</li>\n";
5538                 }
5539                 if ($format eq 'rss') {
5540                         print "</ul>]]>\n" .
5541                               "</content:encoded>\n" .
5542                               "</item>\n";
5543                 } elsif ($format eq 'atom') {
5544                         print "</ul>\n</div>\n" .
5545                               "</content>\n" .
5546                               "</entry>\n";
5547                 }
5548         }
5549
5550         # end of feed
5551         if ($format eq 'rss') {
5552                 print "</channel>\n</rss>\n";
5553         }       elsif ($format eq 'atom') {
5554                 print "</feed>\n";
5555         }
5556 }
5557
5558 sub git_rss {
5559         git_feed('rss');
5560 }
5561
5562 sub git_atom {
5563         git_feed('atom');
5564 }
5565
5566 sub git_opml {
5567         my @list = git_get_projects_list();
5568
5569         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5570         print <<XML;
5571 <?xml version="1.0" encoding="utf-8"?>
5572 <opml version="1.0">
5573 <head>
5574   <title>$site_name OPML Export</title>
5575 </head>
5576 <body>
5577 <outline text="git RSS feeds">
5578 XML
5579
5580         foreach my $pr (@list) {
5581                 my %proj = %$pr;
5582                 my $head = git_get_head_hash($proj{'path'});
5583                 if (!defined $head) {
5584                         next;
5585                 }
5586                 $git_dir = "$projectroot/$proj{'path'}";
5587                 my %co = parse_commit($head);
5588                 if (!%co) {
5589                         next;
5590                 }
5591
5592                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5593                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5594                 my $html = "$my_url?p=$proj{'path'};a=summary";
5595                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5596         }
5597         print <<XML;
5598 </outline>
5599 </body>
5600 </opml>
5601 XML
5602 }