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'} = $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{'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'} = [ split('', $4) ];
2011                 $res{'to_file'} = unquote($5);
2012         }
2013         # 'c512b523472485aef4fff9e57b229d9d243c967f'
2014         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2015                 $res{'commit'} = $1;
2016         }
2017
2018         return wantarray ? %res : \%res;
2019 }
2020
2021 # wrapper: return parsed line of git-diff-tree "raw" output
2022 # (the argument might be raw line, or parsed info)
2023 sub parsed_difftree_line {
2024         my $line_or_ref = shift;
2025
2026         if (ref($line_or_ref) eq "HASH") {
2027                 # pre-parsed (or generated by hand)
2028                 return $line_or_ref;
2029         } else {
2030                 return parse_difftree_raw_line($line_or_ref);
2031         }
2032 }
2033
2034 # parse line of git-ls-tree output
2035 sub parse_ls_tree_line ($;%) {
2036         my $line = shift;
2037         my %opts = @_;
2038         my %res;
2039
2040         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2041         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2042
2043         $res{'mode'} = $1;
2044         $res{'type'} = $2;
2045         $res{'hash'} = $3;
2046         if ($opts{'-z'}) {
2047                 $res{'name'} = $4;
2048         } else {
2049                 $res{'name'} = unquote($4);
2050         }
2051
2052         return wantarray ? %res : \%res;
2053 }
2054
2055 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2056 sub parse_from_to_diffinfo {
2057         my ($diffinfo, $from, $to, @parents) = @_;
2058
2059         if ($diffinfo->{'nparents'}) {
2060                 # combined diff
2061                 $from->{'file'} = [];
2062                 $from->{'href'} = [];
2063                 fill_from_file_info($diffinfo, @parents)
2064                         unless exists $diffinfo->{'from_file'};
2065                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2066                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2067                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2068                                 $from->{'href'}[$i] = href(action=>"blob",
2069                                                            hash_base=>$parents[$i],
2070                                                            hash=>$diffinfo->{'from_id'}[$i],
2071                                                            file_name=>$from->{'file'}[$i]);
2072                         } else {
2073                                 $from->{'href'}[$i] = undef;
2074                         }
2075                 }
2076         } else {
2077                 # ordinary (not combined) diff
2078                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2079                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2080                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2081                                                hash=>$diffinfo->{'from_id'},
2082                                                file_name=>$from->{'file'});
2083                 } else {
2084                         delete $from->{'href'};
2085                 }
2086         }
2087
2088         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2089         if (!is_deleted($diffinfo)) { # file exists in result
2090                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2091                                      hash=>$diffinfo->{'to_id'},
2092                                      file_name=>$to->{'file'});
2093         } else {
2094                 delete $to->{'href'};
2095         }
2096 }
2097
2098 ## ......................................................................
2099 ## parse to array of hashes functions
2100
2101 sub git_get_heads_list {
2102         my $limit = shift;
2103         my @headslist;
2104
2105         open my $fd, '-|', git_cmd(), 'for-each-ref',
2106                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2107                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2108                 'refs/heads'
2109                 or return;
2110         while (my $line = <$fd>) {
2111                 my %ref_item;
2112
2113                 chomp $line;
2114                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2115                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2116                 my ($committer, $epoch, $tz) =
2117                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2118                 $name =~ s!^refs/heads/!!;
2119
2120                 $ref_item{'name'}  = $name;
2121                 $ref_item{'id'}    = $hash;
2122                 $ref_item{'title'} = $title || '(no commit message)';
2123                 $ref_item{'epoch'} = $epoch;
2124                 if ($epoch) {
2125                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2126                 } else {
2127                         $ref_item{'age'} = "unknown";
2128                 }
2129
2130                 push @headslist, \%ref_item;
2131         }
2132         close $fd;
2133
2134         return wantarray ? @headslist : \@headslist;
2135 }
2136
2137 sub git_get_tags_list {
2138         my $limit = shift;
2139         my @tagslist;
2140
2141         open my $fd, '-|', git_cmd(), 'for-each-ref',
2142                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2143                 '--format=%(objectname) %(objecttype) %(refname) '.
2144                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2145                 'refs/tags'
2146                 or return;
2147         while (my $line = <$fd>) {
2148                 my %ref_item;
2149
2150                 chomp $line;
2151                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2152                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2153                 my ($creator, $epoch, $tz) =
2154                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2155                 $name =~ s!^refs/tags/!!;
2156
2157                 $ref_item{'type'} = $type;
2158                 $ref_item{'id'} = $id;
2159                 $ref_item{'name'} = $name;
2160                 if ($type eq "tag") {
2161                         $ref_item{'subject'} = $title;
2162                         $ref_item{'reftype'} = $reftype;
2163                         $ref_item{'refid'}   = $refid;
2164                 } else {
2165                         $ref_item{'reftype'} = $type;
2166                         $ref_item{'refid'}   = $id;
2167                 }
2168
2169                 if ($type eq "tag" || $type eq "commit") {
2170                         $ref_item{'epoch'} = $epoch;
2171                         if ($epoch) {
2172                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2173                         } else {
2174                                 $ref_item{'age'} = "unknown";
2175                         }
2176                 }
2177
2178                 push @tagslist, \%ref_item;
2179         }
2180         close $fd;
2181
2182         return wantarray ? @tagslist : \@tagslist;
2183 }
2184
2185 ## ----------------------------------------------------------------------
2186 ## filesystem-related functions
2187
2188 sub get_file_owner {
2189         my $path = shift;
2190
2191         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2192         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2193         if (!defined $gcos) {
2194                 return undef;
2195         }
2196         my $owner = $gcos;
2197         $owner =~ s/[,;].*$//;
2198         return to_utf8($owner);
2199 }
2200
2201 ## ......................................................................
2202 ## mimetype related functions
2203
2204 sub mimetype_guess_file {
2205         my $filename = shift;
2206         my $mimemap = shift;
2207         -r $mimemap or return undef;
2208
2209         my %mimemap;
2210         open(MIME, $mimemap) or return undef;
2211         while (<MIME>) {
2212                 next if m/^#/; # skip comments
2213                 my ($mime, $exts) = split(/\t+/);
2214                 if (defined $exts) {
2215                         my @exts = split(/\s+/, $exts);
2216                         foreach my $ext (@exts) {
2217                                 $mimemap{$ext} = $mime;
2218                         }
2219                 }
2220         }
2221         close(MIME);
2222
2223         $filename =~ /\.([^.]*)$/;
2224         return $mimemap{$1};
2225 }
2226
2227 sub mimetype_guess {
2228         my $filename = shift;
2229         my $mime;
2230         $filename =~ /\./ or return undef;
2231
2232         if ($mimetypes_file) {
2233                 my $file = $mimetypes_file;
2234                 if ($file !~ m!^/!) { # if it is relative path
2235                         # it is relative to project
2236                         $file = "$projectroot/$project/$file";
2237                 }
2238                 $mime = mimetype_guess_file($filename, $file);
2239         }
2240         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2241         return $mime;
2242 }
2243
2244 sub blob_mimetype {
2245         my $fd = shift;
2246         my $filename = shift;
2247
2248         if ($filename) {
2249                 my $mime = mimetype_guess($filename);
2250                 $mime and return $mime;
2251         }
2252
2253         # just in case
2254         return $default_blob_plain_mimetype unless $fd;
2255
2256         if (-T $fd) {
2257                 return 'text/plain' .
2258                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2259         } elsif (! $filename) {
2260                 return 'application/octet-stream';
2261         } elsif ($filename =~ m/\.png$/i) {
2262                 return 'image/png';
2263         } elsif ($filename =~ m/\.gif$/i) {
2264                 return 'image/gif';
2265         } elsif ($filename =~ m/\.jpe?g$/i) {
2266                 return 'image/jpeg';
2267         } else {
2268                 return 'application/octet-stream';
2269         }
2270 }
2271
2272 ## ======================================================================
2273 ## functions printing HTML: header, footer, error page
2274
2275 sub git_header_html {
2276         my $status = shift || "200 OK";
2277         my $expires = shift;
2278
2279         my $title = "$site_name";
2280         if (defined $project) {
2281                 $title .= " - " . to_utf8($project);
2282                 if (defined $action) {
2283                         $title .= "/$action";
2284                         if (defined $file_name) {
2285                                 $title .= " - " . esc_path($file_name);
2286                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2287                                         $title .= "/";
2288                                 }
2289                         }
2290                 }
2291         }
2292         my $content_type;
2293         # require explicit support from the UA if we are to send the page as
2294         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2295         # we have to do this because MSIE sometimes globs '*/*', pretending to
2296         # support xhtml+xml but choking when it gets what it asked for.
2297         if (defined $cgi->http('HTTP_ACCEPT') &&
2298             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2299             $cgi->Accept('application/xhtml+xml') != 0) {
2300                 $content_type = 'application/xhtml+xml';
2301         } else {
2302                 $content_type = 'text/html';
2303         }
2304         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2305                            -status=> $status, -expires => $expires);
2306         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2307         print <<EOF;
2308 <?xml version="1.0" encoding="utf-8"?>
2309 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2310 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2311 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2312 <!-- git core binaries version $git_version -->
2313 <head>
2314 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2315 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2316 <meta name="robots" content="index, nofollow"/>
2317 <title>$title</title>
2318 EOF
2319 # print out each stylesheet that exist
2320         if (defined $stylesheet) {
2321 #provides backwards capability for those people who define style sheet in a config file
2322                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2323         } else {
2324                 foreach my $stylesheet (@stylesheets) {
2325                         next unless $stylesheet;
2326                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2327                 }
2328         }
2329         if (defined $project) {
2330                 printf('<link rel="alternate" title="%s log RSS feed" '.
2331                        'href="%s" type="application/rss+xml" />'."\n",
2332                        esc_param($project), href(action=>"rss"));
2333                 printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2334                        'href="%s" type="application/rss+xml" />'."\n",
2335                        esc_param($project), href(action=>"rss",
2336                                                  extra_options=>"--no-merges"));
2337                 printf('<link rel="alternate" title="%s log Atom feed" '.
2338                        'href="%s" type="application/atom+xml" />'."\n",
2339                        esc_param($project), href(action=>"atom"));
2340                 printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2341                        'href="%s" type="application/atom+xml" />'."\n",
2342                        esc_param($project), href(action=>"atom",
2343                                                  extra_options=>"--no-merges"));
2344         } else {
2345                 printf('<link rel="alternate" title="%s projects list" '.
2346                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2347                        $site_name, href(project=>undef, action=>"project_index"));
2348                 printf('<link rel="alternate" title="%s projects feeds" '.
2349                        'href="%s" type="text/x-opml"/>'."\n",
2350                        $site_name, href(project=>undef, action=>"opml"));
2351         }
2352         if (defined $favicon) {
2353                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2354         }
2355
2356         print "</head>\n" .
2357               "<body>\n";
2358
2359         if (-f $site_header) {
2360                 open (my $fd, $site_header);
2361                 print <$fd>;
2362                 close $fd;
2363         }
2364
2365         print "<div class=\"page_header\">\n" .
2366               $cgi->a({-href => esc_url($logo_url),
2367                        -title => $logo_label},
2368                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2369         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2370         if (defined $project) {
2371                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2372                 if (defined $action) {
2373                         print " / $action";
2374                 }
2375                 print "\n";
2376         }
2377         print "</div>\n";
2378
2379         my ($have_search) = gitweb_check_feature('search');
2380         if ((defined $project) && ($have_search)) {
2381                 if (!defined $searchtext) {
2382                         $searchtext = "";
2383                 }
2384                 my $search_hash;
2385                 if (defined $hash_base) {
2386                         $search_hash = $hash_base;
2387                 } elsif (defined $hash) {
2388                         $search_hash = $hash;
2389                 } else {
2390                         $search_hash = "HEAD";
2391                 }
2392                 my $action = $my_uri;
2393                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2394                 if ($use_pathinfo) {
2395                         $action .= "/$project";
2396                 } else {
2397                         $cgi->param("p", $project);
2398                 }
2399                 $cgi->param("a", "search");
2400                 $cgi->param("h", $search_hash);
2401                 print $cgi->startform(-method => "get", -action => $action) .
2402                       "<div class=\"search\">\n" .
2403                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2404                       $cgi->hidden(-name => "a") . "\n" .
2405                       $cgi->hidden(-name => "h") . "\n" .
2406                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2407                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2408                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2409                       " search:\n",
2410                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2411                       "</div>" .
2412                       $cgi->end_form() . "\n";
2413         }
2414 }
2415
2416 sub git_footer_html {
2417         print "<div class=\"page_footer\">\n";
2418         if (defined $project) {
2419                 my $descr = git_get_project_description($project);
2420                 if (defined $descr) {
2421                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2422                 }
2423                 print $cgi->a({-href => href(action=>"rss"),
2424                               -class => "rss_logo"}, "RSS") . " ";
2425                 print $cgi->a({-href => href(action=>"atom"),
2426                               -class => "rss_logo"}, "Atom") . "\n";
2427         } else {
2428                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2429                               -class => "rss_logo"}, "OPML") . " ";
2430                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2431                               -class => "rss_logo"}, "TXT") . "\n";
2432         }
2433         print "</div>\n" ;
2434
2435         if (-f $site_footer) {
2436                 open (my $fd, $site_footer);
2437                 print <$fd>;
2438                 close $fd;
2439         }
2440
2441         print "</body>\n" .
2442               "</html>";
2443 }
2444
2445 sub die_error {
2446         my $status = shift || "403 Forbidden";
2447         my $error = shift || "Malformed query, file missing or permission denied";
2448
2449         git_header_html($status);
2450         print <<EOF;
2451 <div class="page_body">
2452 <br /><br />
2453 $status - $error
2454 <br />
2455 </div>
2456 EOF
2457         git_footer_html();
2458         exit;
2459 }
2460
2461 ## ----------------------------------------------------------------------
2462 ## functions printing or outputting HTML: navigation
2463
2464 sub git_print_page_nav {
2465         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2466         $extra = '' if !defined $extra; # pager or formats
2467
2468         my @navs = qw(summary shortlog log commit commitdiff tree);
2469         if ($suppress) {
2470                 @navs = grep { $_ ne $suppress } @navs;
2471         }
2472
2473         my %arg = map { $_ => {action=>$_} } @navs;
2474         if (defined $head) {
2475                 for (qw(commit commitdiff)) {
2476                         $arg{$_}{'hash'} = $head;
2477                 }
2478                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2479                         for (qw(shortlog log)) {
2480                                 $arg{$_}{'hash'} = $head;
2481                         }
2482                 }
2483         }
2484         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2485         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2486
2487         print "<div class=\"page_nav\">\n" .
2488                 (join " | ",
2489                  map { $_ eq $current ?
2490                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2491                  } @navs);
2492         print "<br/>\n$extra<br/>\n" .
2493               "</div>\n";
2494 }
2495
2496 sub format_paging_nav {
2497         my ($action, $hash, $head, $page, $nrevs) = @_;
2498         my $paging_nav;
2499
2500
2501         if ($hash ne $head || $page) {
2502                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2503         } else {
2504                 $paging_nav .= "HEAD";
2505         }
2506
2507         if ($page > 0) {
2508                 $paging_nav .= " &sdot; " .
2509                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2510                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2511         } else {
2512                 $paging_nav .= " &sdot; prev";
2513         }
2514
2515         if ($nrevs >= (100 * ($page+1)-1)) {
2516                 $paging_nav .= " &sdot; " .
2517                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2518                                  -accesskey => "n", -title => "Alt-n"}, "next");
2519         } else {
2520                 $paging_nav .= " &sdot; next";
2521         }
2522
2523         return $paging_nav;
2524 }
2525
2526 ## ......................................................................
2527 ## functions printing or outputting HTML: div
2528
2529 sub git_print_header_div {
2530         my ($action, $title, $hash, $hash_base) = @_;
2531         my %args = ();
2532
2533         $args{'action'} = $action;
2534         $args{'hash'} = $hash if $hash;
2535         $args{'hash_base'} = $hash_base if $hash_base;
2536
2537         print "<div class=\"header\">\n" .
2538               $cgi->a({-href => href(%args), -class => "title"},
2539               $title ? $title : $action) .
2540               "\n</div>\n";
2541 }
2542
2543 #sub git_print_authorship (\%) {
2544 sub git_print_authorship {
2545         my $co = shift;
2546
2547         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2548         print "<div class=\"author_date\">" .
2549               esc_html($co->{'author_name'}) .
2550               " [$ad{'rfc2822'}";
2551         if ($ad{'hour_local'} < 6) {
2552                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2553                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2554         } else {
2555                 printf(" (%02d:%02d %s)",
2556                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2557         }
2558         print "]</div>\n";
2559 }
2560
2561 sub git_print_page_path {
2562         my $name = shift;
2563         my $type = shift;
2564         my $hb = shift;
2565
2566
2567         print "<div class=\"page_path\">";
2568         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2569                       -title => 'tree root'}, to_utf8("[$project]"));
2570         print " / ";
2571         if (defined $name) {
2572                 my @dirname = split '/', $name;
2573                 my $basename = pop @dirname;
2574                 my $fullname = '';
2575
2576                 foreach my $dir (@dirname) {
2577                         $fullname .= ($fullname ? '/' : '') . $dir;
2578                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2579                                                      hash_base=>$hb),
2580                                       -title => $fullname}, esc_path($dir));
2581                         print " / ";
2582                 }
2583                 if (defined $type && $type eq 'blob') {
2584                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2585                                                      hash_base=>$hb),
2586                                       -title => $name}, esc_path($basename));
2587                 } elsif (defined $type && $type eq 'tree') {
2588                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2589                                                      hash_base=>$hb),
2590                                       -title => $name}, esc_path($basename));
2591                         print " / ";
2592                 } else {
2593                         print esc_path($basename);
2594                 }
2595         }
2596         print "<br/></div>\n";
2597 }
2598
2599 # sub git_print_log (\@;%) {
2600 sub git_print_log ($;%) {
2601         my $log = shift;
2602         my %opts = @_;
2603
2604         if ($opts{'-remove_title'}) {
2605                 # remove title, i.e. first line of log
2606                 shift @$log;
2607         }
2608         # remove leading empty lines
2609         while (defined $log->[0] && $log->[0] eq "") {
2610                 shift @$log;
2611         }
2612
2613         # print log
2614         my $signoff = 0;
2615         my $empty = 0;
2616         foreach my $line (@$log) {
2617                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2618                         $signoff = 1;
2619                         $empty = 0;
2620                         if (! $opts{'-remove_signoff'}) {
2621                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2622                                 next;
2623                         } else {
2624                                 # remove signoff lines
2625                                 next;
2626                         }
2627                 } else {
2628                         $signoff = 0;
2629                 }
2630
2631                 # print only one empty line
2632                 # do not print empty line after signoff
2633                 if ($line eq "") {
2634                         next if ($empty || $signoff);
2635                         $empty = 1;
2636                 } else {
2637                         $empty = 0;
2638                 }
2639
2640                 print format_log_line_html($line) . "<br/>\n";
2641         }
2642
2643         if ($opts{'-final_empty_line'}) {
2644                 # end with single empty line
2645                 print "<br/>\n" unless $empty;
2646         }
2647 }
2648
2649 # return link target (what link points to)
2650 sub git_get_link_target {
2651         my $hash = shift;
2652         my $link_target;
2653
2654         # read link
2655         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2656                 or return;
2657         {
2658                 local $/;
2659                 $link_target = <$fd>;
2660         }
2661         close $fd
2662                 or return;
2663
2664         return $link_target;
2665 }
2666
2667 # given link target, and the directory (basedir) the link is in,
2668 # return target of link relative to top directory (top tree);
2669 # return undef if it is not possible (including absolute links).
2670 sub normalize_link_target {
2671         my ($link_target, $basedir, $hash_base) = @_;
2672
2673         # we can normalize symlink target only if $hash_base is provided
2674         return unless $hash_base;
2675
2676         # absolute symlinks (beginning with '/') cannot be normalized
2677         return if (substr($link_target, 0, 1) eq '/');
2678
2679         # normalize link target to path from top (root) tree (dir)
2680         my $path;
2681         if ($basedir) {
2682                 $path = $basedir . '/' . $link_target;
2683         } else {
2684                 # we are in top (root) tree (dir)
2685                 $path = $link_target;
2686         }
2687
2688         # remove //, /./, and /../
2689         my @path_parts;
2690         foreach my $part (split('/', $path)) {
2691                 # discard '.' and ''
2692                 next if (!$part || $part eq '.');
2693                 # handle '..'
2694                 if ($part eq '..') {
2695                         if (@path_parts) {
2696                                 pop @path_parts;
2697                         } else {
2698                                 # link leads outside repository (outside top dir)
2699                                 return;
2700                         }
2701                 } else {
2702                         push @path_parts, $part;
2703                 }
2704         }
2705         $path = join('/', @path_parts);
2706
2707         return $path;
2708 }
2709
2710 # print tree entry (row of git_tree), but without encompassing <tr> element
2711 sub git_print_tree_entry {
2712         my ($t, $basedir, $hash_base, $have_blame) = @_;
2713
2714         my %base_key = ();
2715         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2716
2717         # The format of a table row is: mode list link.  Where mode is
2718         # the mode of the entry, list is the name of the entry, an href,
2719         # and link is the action links of the entry.
2720
2721         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2722         if ($t->{'type'} eq "blob") {
2723                 print "<td class=\"list\">" .
2724                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2725                                                file_name=>"$basedir$t->{'name'}", %base_key),
2726                                 -class => "list"}, esc_path($t->{'name'}));
2727                 if (S_ISLNK(oct $t->{'mode'})) {
2728                         my $link_target = git_get_link_target($t->{'hash'});
2729                         if ($link_target) {
2730                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2731                                 if (defined $norm_target) {
2732                                         print " -> " .
2733                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2734                                                                      file_name=>$norm_target),
2735                                                        -title => $norm_target}, esc_path($link_target));
2736                                 } else {
2737                                         print " -> " . esc_path($link_target);
2738                                 }
2739                         }
2740                 }
2741                 print "</td>\n";
2742                 print "<td class=\"link\">";
2743                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2744                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2745                               "blob");
2746                 if ($have_blame) {
2747                         print " | " .
2748                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2749                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2750                                       "blame");
2751                 }
2752                 if (defined $hash_base) {
2753                         print " | " .
2754                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2755                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2756                                       "history");
2757                 }
2758                 print " | " .
2759                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2760                                                file_name=>"$basedir$t->{'name'}")},
2761                                 "raw");
2762                 print "</td>\n";
2763
2764         } elsif ($t->{'type'} eq "tree") {
2765                 print "<td class=\"list\">";
2766                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2767                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2768                               esc_path($t->{'name'}));
2769                 print "</td>\n";
2770                 print "<td class=\"link\">";
2771                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2772                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2773                               "tree");
2774                 if (defined $hash_base) {
2775                         print " | " .
2776                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2777                                                      file_name=>"$basedir$t->{'name'}")},
2778                                       "history");
2779                 }
2780                 print "</td>\n";
2781         } else {
2782                 # unknown object: we can only present history for it
2783                 # (this includes 'commit' object, i.e. submodule support)
2784                 print "<td class=\"list\">" .
2785                       esc_path($t->{'name'}) .
2786                       "</td>\n";
2787                 print "<td class=\"link\">";
2788                 if (defined $hash_base) {
2789                         print $cgi->a({-href => href(action=>"history",
2790                                                      hash_base=>$hash_base,
2791                                                      file_name=>"$basedir$t->{'name'}")},
2792                                       "history");
2793                 }
2794                 print "</td>\n";
2795         }
2796 }
2797
2798 ## ......................................................................
2799 ## functions printing large fragments of HTML
2800
2801 # get pre-image filenames for merge (combined) diff
2802 sub fill_from_file_info {
2803         my ($diff, @parents) = @_;
2804
2805         $diff->{'from_file'} = [ ];
2806         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2807         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2808                 if ($diff->{'status'}[$i] eq 'R' ||
2809                     $diff->{'status'}[$i] eq 'C') {
2810                         $diff->{'from_file'}[$i] =
2811                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2812                 }
2813         }
2814
2815         return $diff;
2816 }
2817
2818 # is current raw difftree line of file deletion
2819 sub is_deleted {
2820         my $diffinfo = shift;
2821
2822         return $diffinfo->{'to_id'} eq ('0' x 40);
2823 }
2824
2825 # does patch correspond to [previous] difftree raw line
2826 # $diffinfo  - hashref of parsed raw diff format
2827 # $patchinfo - hashref of parsed patch diff format
2828 #              (the same keys as in $diffinfo)
2829 sub is_patch_split {
2830         my ($diffinfo, $patchinfo) = @_;
2831
2832         return defined $diffinfo && defined $patchinfo
2833                 && ($diffinfo->{'to_file'} || $diffinfo->{'file'}) eq $patchinfo->{'to_file'};
2834 }
2835
2836
2837 sub git_difftree_body {
2838         my ($difftree, $hash, @parents) = @_;
2839         my ($parent) = $parents[0];
2840         my ($have_blame) = gitweb_check_feature('blame');
2841         print "<div class=\"list_head\">\n";
2842         if ($#{$difftree} > 10) {
2843                 print(($#{$difftree} + 1) . " files changed:\n");
2844         }
2845         print "</div>\n";
2846
2847         print "<table class=\"" .
2848               (@parents > 1 ? "combined " : "") .
2849               "diff_tree\">\n";
2850
2851         # header only for combined diff in 'commitdiff' view
2852         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2853         if ($has_header) {
2854                 # table header
2855                 print "<thead><tr>\n" .
2856                        "<th></th><th></th>\n"; # filename, patchN link
2857                 for (my $i = 0; $i < @parents; $i++) {
2858                         my $par = $parents[$i];
2859                         print "<th>" .
2860                               $cgi->a({-href => href(action=>"commitdiff",
2861                                                      hash=>$hash, hash_parent=>$par),
2862                                        -title => 'commitdiff to parent number ' .
2863                                                   ($i+1) . ': ' . substr($par,0,7)},
2864                                       $i+1) .
2865                               "&nbsp;</th>\n";
2866                 }
2867                 print "</tr></thead>\n<tbody>\n";
2868         }
2869
2870         my $alternate = 1;
2871         my $patchno = 0;
2872         foreach my $line (@{$difftree}) {
2873                 my $diff = parsed_difftree_line($line);
2874
2875                 if ($alternate) {
2876                         print "<tr class=\"dark\">\n";
2877                 } else {
2878                         print "<tr class=\"light\">\n";
2879                 }
2880                 $alternate ^= 1;
2881
2882                 if (exists $diff->{'nparents'}) { # combined diff
2883
2884                         fill_from_file_info($diff, @parents)
2885                                 unless exists $diff->{'from_file'};
2886
2887                         if (!is_deleted($diff)) {
2888                                 # file exists in the result (child) commit
2889                                 print "<td>" .
2890                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2891                                                              file_name=>$diff->{'to_file'},
2892                                                              hash_base=>$hash),
2893                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2894                                       "</td>\n";
2895                         } else {
2896                                 print "<td>" .
2897                                       esc_path($diff->{'to_file'}) .
2898                                       "</td>\n";
2899                         }
2900
2901                         if ($action eq 'commitdiff') {
2902                                 # link to patch
2903                                 $patchno++;
2904                                 print "<td class=\"link\">" .
2905                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2906                                       " | " .
2907                                       "</td>\n";
2908                         }
2909
2910                         my $has_history = 0;
2911                         my $not_deleted = 0;
2912                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2913                                 my $hash_parent = $parents[$i];
2914                                 my $from_hash = $diff->{'from_id'}[$i];
2915                                 my $from_path = $diff->{'from_file'}[$i];
2916                                 my $status = $diff->{'status'}[$i];
2917
2918                                 $has_history ||= ($status ne 'A');
2919                                 $not_deleted ||= ($status ne 'D');
2920
2921                                 if ($status eq 'A') {
2922                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2923                                 } elsif ($status eq 'D') {
2924                                         print "<td class=\"link\">" .
2925                                               $cgi->a({-href => href(action=>"blob",
2926                                                                      hash_base=>$hash,
2927                                                                      hash=>$from_hash,
2928                                                                      file_name=>$from_path)},
2929                                                       "blob" . ($i+1)) .
2930                                               " | </td>\n";
2931                                 } else {
2932                                         if ($diff->{'to_id'} eq $from_hash) {
2933                                                 print "<td class=\"link nochange\">";
2934                                         } else {
2935                                                 print "<td class=\"link\">";
2936                                         }
2937                                         print $cgi->a({-href => href(action=>"blobdiff",
2938                                                                      hash=>$diff->{'to_id'},
2939                                                                      hash_parent=>$from_hash,
2940                                                                      hash_base=>$hash,
2941                                                                      hash_parent_base=>$hash_parent,
2942                                                                      file_name=>$diff->{'to_file'},
2943                                                                      file_parent=>$from_path)},
2944                                                       "diff" . ($i+1)) .
2945                                               " | </td>\n";
2946                                 }
2947                         }
2948
2949                         print "<td class=\"link\">";
2950                         if ($not_deleted) {
2951                                 print $cgi->a({-href => href(action=>"blob",
2952                                                              hash=>$diff->{'to_id'},
2953                                                              file_name=>$diff->{'to_file'},
2954                                                              hash_base=>$hash)},
2955                                               "blob");
2956                                 print " | " if ($has_history);
2957                         }
2958                         if ($has_history) {
2959                                 print $cgi->a({-href => href(action=>"history",
2960                                                              file_name=>$diff->{'to_file'},
2961                                                              hash_base=>$hash)},
2962                                               "history");
2963                         }
2964                         print "</td>\n";
2965
2966                         print "</tr>\n";
2967                         next; # instead of 'else' clause, to avoid extra indent
2968                 }
2969                 # else ordinary diff
2970
2971                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2972                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2973                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2974                         $to_mode_oct = oct $diff->{'to_mode'};
2975                         if (S_ISREG($to_mode_oct)) { # only for regular file
2976                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2977                         }
2978                         $to_file_type = file_type($diff->{'to_mode'});
2979                 }
2980                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2981                         $from_mode_oct = oct $diff->{'from_mode'};
2982                         if (S_ISREG($to_mode_oct)) { # only for regular file
2983                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2984                         }
2985                         $from_file_type = file_type($diff->{'from_mode'});
2986                 }
2987
2988                 if ($diff->{'status'} eq "A") { # created
2989                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2990                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2991                         $mode_chng   .= "]</span>";
2992                         print "<td>";
2993                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2994                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2995                                       -class => "list"}, esc_path($diff->{'file'}));
2996                         print "</td>\n";
2997                         print "<td>$mode_chng</td>\n";
2998                         print "<td class=\"link\">";
2999                         if ($action eq 'commitdiff') {
3000                                 # link to patch
3001                                 $patchno++;
3002                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3003                                 print " | ";
3004                         }
3005                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3006                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3007                                       "blob");
3008                         print "</td>\n";
3009
3010                 } elsif ($diff->{'status'} eq "D") { # deleted
3011                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3012                         print "<td>";
3013                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3014                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
3015                                        -class => "list"}, esc_path($diff->{'file'}));
3016                         print "</td>\n";
3017                         print "<td>$mode_chng</td>\n";
3018                         print "<td class=\"link\">";
3019                         if ($action eq 'commitdiff') {
3020                                 # link to patch
3021                                 $patchno++;
3022                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3023                                 print " | ";
3024                         }
3025                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3026                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3027                                       "blob") . " | ";
3028                         if ($have_blame) {
3029                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3030                                                              file_name=>$diff->{'file'})},
3031                                               "blame") . " | ";
3032                         }
3033                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3034                                                      file_name=>$diff->{'file'})},
3035                                       "history");
3036                         print "</td>\n";
3037
3038                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3039                         my $mode_chnge = "";
3040                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3041                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3042                                 if ($from_file_type ne $to_file_type) {
3043                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3044                                 }
3045                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3046                                         if ($from_mode_str && $to_mode_str) {
3047                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3048                                         } elsif ($to_mode_str) {
3049                                                 $mode_chnge .= " mode: $to_mode_str";
3050                                         }
3051                                 }
3052                                 $mode_chnge .= "]</span>\n";
3053                         }
3054                         print "<td>";
3055                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3056                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3057                                       -class => "list"}, esc_path($diff->{'file'}));
3058                         print "</td>\n";
3059                         print "<td>$mode_chnge</td>\n";
3060                         print "<td class=\"link\">";
3061                         if ($action eq 'commitdiff') {
3062                                 # link to patch
3063                                 $patchno++;
3064                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3065                                       " | ";
3066                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3067                                 # "commit" view and modified file (not onlu mode changed)
3068                                 print $cgi->a({-href => href(action=>"blobdiff",
3069                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3070                                                              hash_base=>$hash, hash_parent_base=>$parent,
3071                                                              file_name=>$diff->{'file'})},
3072                                               "diff") .
3073                                       " | ";
3074                         }
3075                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3076                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3077                                        "blob") . " | ";
3078                         if ($have_blame) {
3079                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3080                                                              file_name=>$diff->{'file'})},
3081                                               "blame") . " | ";
3082                         }
3083                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3084                                                      file_name=>$diff->{'file'})},
3085                                       "history");
3086                         print "</td>\n";
3087
3088                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3089                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3090                         my $nstatus = $status_name{$diff->{'status'}};
3091                         my $mode_chng = "";
3092                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3093                                 # mode also for directories, so we cannot use $to_mode_str
3094                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3095                         }
3096                         print "<td>" .
3097                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3098                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3099                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3100                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3101                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3102                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3103                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3104                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3105                               "<td class=\"link\">";
3106                         if ($action eq 'commitdiff') {
3107                                 # link to patch
3108                                 $patchno++;
3109                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3110                                       " | ";
3111                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3112                                 # "commit" view and modified file (not only pure rename or copy)
3113                                 print $cgi->a({-href => href(action=>"blobdiff",
3114                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3115                                                              hash_base=>$hash, hash_parent_base=>$parent,
3116                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3117                                               "diff") .
3118                                       " | ";
3119                         }
3120                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3121                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3122                                       "blob") . " | ";
3123                         if ($have_blame) {
3124                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3125                                                              file_name=>$diff->{'to_file'})},
3126                                               "blame") . " | ";
3127                         }
3128                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3129                                                     file_name=>$diff->{'to_file'})},
3130                                       "history");
3131                         print "</td>\n";
3132
3133                 } # we should not encounter Unmerged (U) or Unknown (X) status
3134                 print "</tr>\n";
3135         }
3136         print "</tbody>" if $has_header;
3137         print "</table>\n";
3138 }
3139
3140 sub git_patchset_body {
3141         my ($fd, $difftree, $hash, @hash_parents) = @_;
3142         my ($hash_parent) = $hash_parents[0];
3143
3144         my $is_combined = (@hash_parents > 1);
3145         my $patch_idx = 0;
3146         my $patch_number = 0;
3147         my $patch_line;
3148         my $diffinfo;
3149         my $to_name;
3150         my (%from, %to);
3151
3152         print "<div class=\"patchset\">\n";
3153
3154         # skip to first patch
3155         while ($patch_line = <$fd>) {
3156                 chomp $patch_line;
3157
3158                 last if ($patch_line =~ m/^diff /);
3159         }
3160
3161  PATCH:
3162         while ($patch_line) {
3163
3164                 # parse "git diff" header line
3165                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3166                         # $1 is from_name, which we do not use
3167                         $to_name = unquote($2);
3168                         $to_name =~ s!^b/!!;
3169                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3170                         # $1 is 'cc' or 'combined', which we do not use
3171                         $to_name = unquote($2);
3172                 } else {
3173                         $to_name = undef;
3174                 }
3175
3176                 # check if current patch belong to current raw line
3177                 # and parse raw git-diff line if needed
3178                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3179                         # this is continuation of a split patch
3180                         print "<div class=\"patch cont\">\n";
3181                 } else {
3182                         # advance raw git-diff output if needed
3183                         $patch_idx++ if defined $diffinfo;
3184
3185                         # read and prepare patch information
3186                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3187
3188                         # compact combined diff output can have some patches skipped
3189                         # find which patch (using pathname of result) we are at now;
3190                         if ($is_combined) {
3191                                 while ($to_name ne $diffinfo->{'to_file'}) {
3192                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3193                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3194                                               "</div>\n";  # class="patch"
3195
3196                                         $patch_idx++;
3197                                         $patch_number++;
3198
3199                                         last if $patch_idx > $#$difftree;
3200                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3201                                 }
3202                         }
3203
3204                         # modifies %from, %to hashes
3205                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3206
3207                         # this is first patch for raw difftree line with $patch_idx index
3208                         # we index @$difftree array from 0, but number patches from 1
3209                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3210                 }
3211
3212                 # git diff header
3213                 #assert($patch_line =~ m/^diff /) if DEBUG;
3214                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3215                 $patch_number++;
3216                 # print "git diff" header
3217                 print format_git_diff_header_line($patch_line, $diffinfo,
3218                                                   \%from, \%to);
3219
3220                 # print extended diff header
3221                 print "<div class=\"diff extended_header\">\n";
3222         EXTENDED_HEADER:
3223                 while ($patch_line = <$fd>) {
3224                         chomp $patch_line;
3225
3226                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3227
3228                         print format_extended_diff_header_line($patch_line, $diffinfo,
3229                                                                \%from, \%to);
3230                 }
3231                 print "</div>\n"; # class="diff extended_header"
3232
3233                 # from-file/to-file diff header
3234                 if (! $patch_line) {
3235                         print "</div>\n"; # class="patch"
3236                         last PATCH;
3237                 }
3238                 next PATCH if ($patch_line =~ m/^diff /);
3239                 #assert($patch_line =~ m/^---/) if DEBUG;
3240
3241                 my $last_patch_line = $patch_line;
3242                 $patch_line = <$fd>;
3243                 chomp $patch_line;
3244                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3245
3246                 print format_diff_from_to_header($last_patch_line, $patch_line,
3247                                                  $diffinfo, \%from, \%to,
3248                                                  @hash_parents);
3249
3250                 # the patch itself
3251         LINE:
3252                 while ($patch_line = <$fd>) {
3253                         chomp $patch_line;
3254
3255                         next PATCH if ($patch_line =~ m/^diff /);
3256
3257                         print format_diff_line($patch_line, \%from, \%to);
3258                 }
3259
3260         } continue {
3261                 print "</div>\n"; # class="patch"
3262         }
3263
3264         # for compact combined (--cc) format, with chunk and patch simpliciaction
3265         # patchset might be empty, but there might be unprocessed raw lines
3266         for (++$patch_idx if $patch_number > 0;
3267              $patch_idx < @$difftree;
3268              ++$patch_idx) {
3269                 # read and prepare patch information
3270                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3271
3272                 # generate anchor for "patch" links in difftree / whatchanged part
3273                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3274                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3275                       "</div>\n";  # class="patch"
3276
3277                 $patch_number++;
3278         }
3279
3280         if ($patch_number == 0) {
3281                 if (@hash_parents > 1) {
3282                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3283                 } else {
3284                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3285                 }
3286         }
3287
3288         print "</div>\n"; # class="patchset"
3289 }
3290
3291 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3292
3293 sub git_project_list_body {
3294         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3295
3296         my ($check_forks) = gitweb_check_feature('forks');
3297
3298         my @projects;
3299         foreach my $pr (@$projlist) {
3300                 my (@aa) = git_get_last_activity($pr->{'path'});
3301                 unless (@aa) {
3302                         next;
3303                 }
3304                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3305                 if (!defined $pr->{'descr'}) {
3306                         my $descr = git_get_project_description($pr->{'path'}) || "";
3307                         $pr->{'descr_long'} = to_utf8($descr);
3308                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3309                 }
3310                 if (!defined $pr->{'owner'}) {
3311                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3312                 }
3313                 if ($check_forks) {
3314                         my $pname = $pr->{'path'};
3315                         if (($pname =~ s/\.git$//) &&
3316                             ($pname !~ /\/$/) &&
3317                             (-d "$projectroot/$pname")) {
3318                                 $pr->{'forks'} = "-d $projectroot/$pname";
3319                         }
3320                         else {
3321                                 $pr->{'forks'} = 0;
3322                         }
3323                 }
3324                 push @projects, $pr;
3325         }
3326
3327         $order ||= $default_projects_order;
3328         $from = 0 unless defined $from;
3329         $to = $#projects if (!defined $to || $#projects < $to);
3330
3331         print "<table class=\"project_list\">\n";
3332         unless ($no_header) {
3333                 print "<tr>\n";
3334                 if ($check_forks) {
3335                         print "<th></th>\n";
3336                 }
3337                 if ($order eq "project") {
3338                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3339                         print "<th>Project</th>\n";
3340                 } else {
3341                         print "<th>" .
3342                               $cgi->a({-href => href(project=>undef, order=>'project'),
3343                                        -class => "header"}, "Project") .
3344                               "</th>\n";
3345                 }
3346                 if ($order eq "descr") {
3347                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3348                         print "<th>Description</th>\n";
3349                 } else {
3350                         print "<th>" .
3351                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3352                                        -class => "header"}, "Description") .
3353                               "</th>\n";
3354                 }
3355                 if ($order eq "owner") {
3356                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3357                         print "<th>Owner</th>\n";
3358                 } else {
3359                         print "<th>" .
3360                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3361                                        -class => "header"}, "Owner") .
3362                               "</th>\n";
3363                 }
3364                 if ($order eq "age") {
3365                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3366                         print "<th>Last Change</th>\n";
3367                 } else {
3368                         print "<th>" .
3369                               $cgi->a({-href => href(project=>undef, order=>'age'),
3370                                        -class => "header"}, "Last Change") .
3371                               "</th>\n";
3372                 }
3373                 print "<th></th>\n" .
3374                       "</tr>\n";
3375         }
3376         my $alternate = 1;
3377         for (my $i = $from; $i <= $to; $i++) {
3378                 my $pr = $projects[$i];
3379                 if ($alternate) {
3380                         print "<tr class=\"dark\">\n";
3381                 } else {
3382                         print "<tr class=\"light\">\n";
3383                 }
3384                 $alternate ^= 1;
3385                 if ($check_forks) {
3386                         print "<td>";
3387                         if ($pr->{'forks'}) {
3388                                 print "<!-- $pr->{'forks'} -->\n";
3389                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3390                         }
3391                         print "</td>\n";
3392                 }
3393                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3394                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3395                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3396                                         -class => "list", -title => $pr->{'descr_long'}},
3397                                         esc_html($pr->{'descr'})) . "</td>\n" .
3398                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3399                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3400                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3401                       "<td class=\"link\">" .
3402                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3403                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3404                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3405                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3406                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3407                       "</td>\n" .
3408                       "</tr>\n";
3409         }
3410         if (defined $extra) {
3411                 print "<tr>\n";
3412                 if ($check_forks) {
3413                         print "<td></td>\n";
3414                 }
3415                 print "<td colspan=\"5\">$extra</td>\n" .
3416                       "</tr>\n";
3417         }
3418         print "</table>\n";
3419 }
3420
3421 sub git_shortlog_body {
3422         # uses global variable $project
3423         my ($commitlist, $from, $to, $refs, $extra) = @_;
3424
3425         $from = 0 unless defined $from;
3426         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3427
3428         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3429         my $alternate = 1;
3430         for (my $i = $from; $i <= $to; $i++) {
3431                 my %co = %{$commitlist->[$i]};
3432                 my $commit = $co{'id'};
3433                 my $ref = format_ref_marker($refs, $commit);
3434                 if ($alternate) {
3435                         print "<tr class=\"dark\">\n";
3436                 } else {
3437                         print "<tr class=\"light\">\n";
3438                 }
3439                 $alternate ^= 1;
3440                 my $author = chop_and_escape_str($co{'author_name'}, 10);
3441                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3442                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3443                       "<td><i>" . $author . "</i></td>\n" .
3444                       "<td>";
3445                 print format_subject_html($co{'title'}, $co{'title_short'},
3446                                           href(action=>"commit", hash=>$commit), $ref);
3447                 print "</td>\n" .
3448                       "<td class=\"link\">" .
3449                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3450                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3451                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3452                 my $snapshot_links = format_snapshot_links($commit);
3453                 if (defined $snapshot_links) {
3454                         print " | " . $snapshot_links;
3455                 }
3456                 print "</td>\n" .
3457                       "</tr>\n";
3458         }
3459         if (defined $extra) {
3460                 print "<tr>\n" .
3461                       "<td colspan=\"4\">$extra</td>\n" .
3462                       "</tr>\n";
3463         }
3464         print "</table>\n";
3465 }
3466
3467 sub git_history_body {
3468         # Warning: assumes constant type (blob or tree) during history
3469         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3470
3471         $from = 0 unless defined $from;
3472         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3473
3474         print "<table class=\"history\" cellspacing=\"0\">\n";
3475         my $alternate = 1;
3476         for (my $i = $from; $i <= $to; $i++) {
3477                 my %co = %{$commitlist->[$i]};
3478                 if (!%co) {
3479                         next;
3480                 }
3481                 my $commit = $co{'id'};
3482
3483                 my $ref = format_ref_marker($refs, $commit);
3484
3485                 if ($alternate) {
3486                         print "<tr class=\"dark\">\n";
3487                 } else {
3488                         print "<tr class=\"light\">\n";
3489                 }
3490                 $alternate ^= 1;
3491         # shortlog uses      chop_str($co{'author_name'}, 10)
3492                 my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3493                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3494                       "<td><i>" . $author . "</i></td>\n" .
3495                       "<td>";
3496                 # originally git_history used chop_str($co{'title'}, 50)
3497                 print format_subject_html($co{'title'}, $co{'title_short'},
3498                                           href(action=>"commit", hash=>$commit), $ref);
3499                 print "</td>\n" .
3500                       "<td class=\"link\">" .
3501                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3502                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3503
3504                 if ($ftype eq 'blob') {
3505                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3506                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3507                         if (defined $blob_current && defined $blob_parent &&
3508                                         $blob_current ne $blob_parent) {
3509                                 print " | " .
3510                                         $cgi->a({-href => href(action=>"blobdiff",
3511                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3512                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3513                                                                file_name=>$file_name)},
3514                                                 "diff to current");
3515                         }
3516                 }
3517                 print "</td>\n" .
3518                       "</tr>\n";
3519         }
3520         if (defined $extra) {
3521                 print "<tr>\n" .
3522                       "<td colspan=\"4\">$extra</td>\n" .
3523                       "</tr>\n";
3524         }
3525         print "</table>\n";
3526 }
3527
3528 sub git_tags_body {
3529         # uses global variable $project
3530         my ($taglist, $from, $to, $extra) = @_;
3531         $from = 0 unless defined $from;
3532         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3533
3534         print "<table class=\"tags\" cellspacing=\"0\">\n";
3535         my $alternate = 1;
3536         for (my $i = $from; $i <= $to; $i++) {
3537                 my $entry = $taglist->[$i];
3538                 my %tag = %$entry;
3539                 my $comment = $tag{'subject'};
3540                 my $comment_short;
3541                 if (defined $comment) {
3542                         $comment_short = chop_str($comment, 30, 5);
3543                 }
3544                 if ($alternate) {
3545                         print "<tr class=\"dark\">\n";
3546                 } else {
3547                         print "<tr class=\"light\">\n";
3548                 }
3549                 $alternate ^= 1;
3550                 if (defined $tag{'age'}) {
3551                         print "<td><i>$tag{'age'}</i></td>\n";
3552                 } else {
3553                         print "<td></td>\n";
3554                 }
3555                 print "<td>" .
3556                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3557                                -class => "list name"}, esc_html($tag{'name'})) .
3558                       "</td>\n" .
3559                       "<td>";
3560                 if (defined $comment) {
3561                         print format_subject_html($comment, $comment_short,
3562                                                   href(action=>"tag", hash=>$tag{'id'}));
3563                 }
3564                 print "</td>\n" .
3565                       "<td class=\"selflink\">";
3566                 if ($tag{'type'} eq "tag") {
3567                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3568                 } else {
3569                         print "&nbsp;";
3570                 }
3571                 print "</td>\n" .
3572                       "<td class=\"link\">" . " | " .
3573                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3574                 if ($tag{'reftype'} eq "commit") {
3575                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3576                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3577                 } elsif ($tag{'reftype'} eq "blob") {
3578                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3579                 }
3580                 print "</td>\n" .
3581                       "</tr>";
3582         }
3583         if (defined $extra) {
3584                 print "<tr>\n" .
3585                       "<td colspan=\"5\">$extra</td>\n" .
3586                       "</tr>\n";
3587         }
3588         print "</table>\n";
3589 }
3590
3591 sub git_heads_body {
3592         # uses global variable $project
3593         my ($headlist, $head, $from, $to, $extra) = @_;
3594         $from = 0 unless defined $from;
3595         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3596
3597         print "<table class=\"heads\" cellspacing=\"0\">\n";
3598         my $alternate = 1;
3599         for (my $i = $from; $i <= $to; $i++) {
3600                 my $entry = $headlist->[$i];
3601                 my %ref = %$entry;
3602                 my $curr = $ref{'id'} eq $head;
3603                 if ($alternate) {
3604                         print "<tr class=\"dark\">\n";
3605                 } else {
3606                         print "<tr class=\"light\">\n";
3607                 }
3608                 $alternate ^= 1;
3609                 print "<td><i>$ref{'age'}</i></td>\n" .
3610                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3611                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3612                                -class => "list name"},esc_html($ref{'name'})) .
3613                       "</td>\n" .
3614                       "<td class=\"link\">" .
3615                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3616                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3617                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3618                       "</td>\n" .
3619                       "</tr>";
3620         }
3621         if (defined $extra) {
3622                 print "<tr>\n" .
3623                       "<td colspan=\"3\">$extra</td>\n" .
3624                       "</tr>\n";
3625         }
3626         print "</table>\n";
3627 }
3628
3629 sub git_search_grep_body {
3630         my ($commitlist, $from, $to, $extra) = @_;
3631         $from = 0 unless defined $from;
3632         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3633
3634         print "<table class=\"grep\" cellspacing=\"0\">\n";
3635         my $alternate = 1;
3636         for (my $i = $from; $i <= $to; $i++) {
3637                 my %co = %{$commitlist->[$i]};
3638                 if (!%co) {
3639                         next;
3640                 }
3641                 my $commit = $co{'id'};
3642                 if ($alternate) {
3643                         print "<tr class=\"dark\">\n";
3644                 } else {
3645                         print "<tr class=\"light\">\n";
3646                 }
3647                 $alternate ^= 1;
3648                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3649                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3650                       "<td><i>" . $author . "</i></td>\n" .
3651                       "<td>" .
3652                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3653                                chop_and_escape_str($co{'title'}, 50) . "<br/>");
3654                 my $comment = $co{'comment'};
3655                 foreach my $line (@$comment) {
3656                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3657                                 my $lead = esc_html($1) || "";
3658                                 $lead = chop_str($lead, 30, 10);
3659                                 my $match = esc_html($2) || "";
3660                                 my $trail = esc_html($3) || "";
3661                                 $trail = chop_str($trail, 30, 10);
3662                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3663                                 print chop_str($text, 80, 5) . "<br/>\n";
3664                         }
3665                 }
3666                 print "</td>\n" .
3667                       "<td class=\"link\">" .
3668                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3669                       " | " .
3670                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3671                 print "</td>\n" .
3672                       "</tr>\n";
3673         }
3674         if (defined $extra) {
3675                 print "<tr>\n" .
3676                       "<td colspan=\"3\">$extra</td>\n" .
3677                       "</tr>\n";
3678         }
3679         print "</table>\n";
3680 }
3681
3682 ## ======================================================================
3683 ## ======================================================================
3684 ## actions
3685
3686 sub git_project_list {
3687         my $order = $cgi->param('o');
3688         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3689                 die_error(undef, "Unknown order parameter");
3690         }
3691
3692         my @list = git_get_projects_list();
3693         if (!@list) {
3694                 die_error(undef, "No projects found");
3695         }
3696
3697         git_header_html();
3698         if (-f $home_text) {
3699                 print "<div class=\"index_include\">\n";
3700                 open (my $fd, $home_text);
3701                 print <$fd>;
3702                 close $fd;
3703                 print "</div>\n";
3704         }
3705         git_project_list_body(\@list, $order);
3706         git_footer_html();
3707 }
3708
3709 sub git_forks {
3710         my $order = $cgi->param('o');
3711         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3712                 die_error(undef, "Unknown order parameter");
3713         }
3714
3715         my @list = git_get_projects_list($project);
3716         if (!@list) {
3717                 die_error(undef, "No forks found");
3718         }
3719
3720         git_header_html();
3721         git_print_page_nav('','');
3722         git_print_header_div('summary', "$project forks");
3723         git_project_list_body(\@list, $order);
3724         git_footer_html();
3725 }
3726
3727 sub git_project_index {
3728         my @projects = git_get_projects_list($project);
3729
3730         print $cgi->header(
3731                 -type => 'text/plain',
3732                 -charset => 'utf-8',
3733                 -content_disposition => 'inline; filename="index.aux"');
3734
3735         foreach my $pr (@projects) {
3736                 if (!exists $pr->{'owner'}) {
3737                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3738                 }
3739
3740                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3741                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3742                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3743                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3744                 $path  =~ s/ /\+/g;
3745                 $owner =~ s/ /\+/g;
3746
3747                 print "$path $owner\n";
3748         }
3749 }
3750
3751 sub git_summary {
3752         my $descr = git_get_project_description($project) || "none";
3753         my %co = parse_commit("HEAD");
3754         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3755         my $head = $co{'id'};
3756
3757         my $owner = git_get_project_owner($project);
3758
3759         my $refs = git_get_references();
3760         # These get_*_list functions return one more to allow us to see if
3761         # there are more ...
3762         my @taglist  = git_get_tags_list(16);
3763         my @headlist = git_get_heads_list(16);
3764         my @forklist;
3765         my ($check_forks) = gitweb_check_feature('forks');
3766
3767         if ($check_forks) {
3768                 @forklist = git_get_projects_list($project);
3769         }
3770
3771         git_header_html();
3772         git_print_page_nav('summary','', $head);
3773
3774         print "<div class=\"title\">&nbsp;</div>\n";
3775         print "<table cellspacing=\"0\">\n" .
3776               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3777               "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3778         if (defined $cd{'rfc2822'}) {
3779                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3780         }
3781
3782         # use per project git URL list in $projectroot/$project/cloneurl
3783         # or make project git URL from git base URL and project name
3784         my $url_tag = "URL";
3785         my @url_list = git_get_project_url_list($project);
3786         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3787         foreach my $git_url (@url_list) {
3788                 next unless $git_url;
3789                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3790                 $url_tag = "";
3791         }
3792         print "</table>\n";
3793
3794         if (-s "$projectroot/$project/README.html") {
3795                 if (open my $fd, "$projectroot/$project/README.html") {
3796                         print "<div class=\"title\">readme</div>\n";
3797                         print $_ while (<$fd>);
3798                         close $fd;
3799                 }
3800         }
3801
3802         # we need to request one more than 16 (0..15) to check if
3803         # those 16 are all
3804         my @commitlist = $head ? parse_commits($head, 17) : ();
3805         if (@commitlist) {
3806                 git_print_header_div('shortlog');
3807                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3808                                   $#commitlist <=  15 ? undef :
3809                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3810         }
3811
3812         if (@taglist) {
3813                 git_print_header_div('tags');
3814                 git_tags_body(\@taglist, 0, 15,
3815                               $#taglist <=  15 ? undef :
3816                               $cgi->a({-href => href(action=>"tags")}, "..."));
3817         }
3818
3819         if (@headlist) {
3820                 git_print_header_div('heads');
3821                 git_heads_body(\@headlist, $head, 0, 15,
3822                                $#headlist <= 15 ? undef :
3823                                $cgi->a({-href => href(action=>"heads")}, "..."));
3824         }
3825
3826         if (@forklist) {
3827                 git_print_header_div('forks');
3828                 git_project_list_body(\@forklist, undef, 0, 15,
3829                                       $#forklist <= 15 ? undef :
3830                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3831                                       'noheader');
3832         }
3833
3834         git_footer_html();
3835 }
3836
3837 sub git_tag {
3838         my $head = git_get_head_hash($project);
3839         git_header_html();
3840         git_print_page_nav('','', $head,undef,$head);
3841         my %tag = parse_tag($hash);
3842
3843         if (! %tag) {
3844                 die_error(undef, "Unknown tag object");
3845         }
3846
3847         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3848         print "<div class=\"title_text\">\n" .
3849               "<table cellspacing=\"0\">\n" .
3850               "<tr>\n" .
3851               "<td>object</td>\n" .
3852               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3853                                $tag{'object'}) . "</td>\n" .
3854               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3855                                               $tag{'type'}) . "</td>\n" .
3856               "</tr>\n";
3857         if (defined($tag{'author'})) {
3858                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3859                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3860                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3861                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3862                         "</td></tr>\n";
3863         }
3864         print "</table>\n\n" .
3865               "</div>\n";
3866         print "<div class=\"page_body\">";
3867         my $comment = $tag{'comment'};
3868         foreach my $line (@$comment) {
3869                 chomp $line;
3870                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3871         }
3872         print "</div>\n";
3873         git_footer_html();
3874 }
3875
3876 sub git_blame2 {
3877         my $fd;
3878         my $ftype;
3879
3880         my ($have_blame) = gitweb_check_feature('blame');
3881         if (!$have_blame) {
3882                 die_error('403 Permission denied', "Permission denied");
3883         }
3884         die_error('404 Not Found', "File name not defined") if (!$file_name);
3885         $hash_base ||= git_get_head_hash($project);
3886         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3887         my %co = parse_commit($hash_base)
3888                 or die_error(undef, "Reading commit failed");
3889         if (!defined $hash) {
3890                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3891                         or die_error(undef, "Error looking up file");
3892         }
3893         $ftype = git_get_type($hash);
3894         if ($ftype !~ "blob") {
3895                 die_error('400 Bad Request', "Object is not a blob");
3896         }
3897         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3898               $file_name, $hash_base)
3899                 or die_error(undef, "Open git-blame failed");
3900         git_header_html();
3901         my $formats_nav =
3902                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3903                         "blob") .
3904                 " | " .
3905                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3906                         "history") .
3907                 " | " .
3908                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3909                         "HEAD");
3910         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3911         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3912         git_print_page_path($file_name, $ftype, $hash_base);
3913         my @rev_color = (qw(light2 dark2));
3914         my $num_colors = scalar(@rev_color);
3915         my $current_color = 0;
3916         my $last_rev;
3917         print <<HTML;
3918 <div class="page_body">
3919 <table class="blame">
3920 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3921 HTML
3922         my %metainfo = ();
3923         while (1) {
3924                 $_ = <$fd>;
3925                 last unless defined $_;
3926                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3927                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3928                 if (!exists $metainfo{$full_rev}) {
3929                         $metainfo{$full_rev} = {};
3930                 }
3931                 my $meta = $metainfo{$full_rev};
3932                 while (<$fd>) {
3933                         last if (s/^\t//);
3934                         if (/^(\S+) (.*)$/) {
3935                                 $meta->{$1} = $2;
3936                         }
3937                 }
3938                 my $data = $_;
3939                 chomp $data;
3940                 my $rev = substr($full_rev, 0, 8);
3941                 my $author = $meta->{'author'};
3942                 my %date = parse_date($meta->{'author-time'},
3943                                       $meta->{'author-tz'});
3944                 my $date = $date{'iso-tz'};
3945                 if ($group_size) {
3946                         $current_color = ++$current_color % $num_colors;
3947                 }
3948                 print "<tr class=\"$rev_color[$current_color]\">\n";
3949                 if ($group_size) {
3950                         print "<td class=\"sha1\"";
3951                         print " title=\"". esc_html($author) . ", $date\"";
3952                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3953                         print ">";
3954                         print $cgi->a({-href => href(action=>"commit",
3955                                                      hash=>$full_rev,
3956                                                      file_name=>$file_name)},
3957                                       esc_html($rev));
3958                         print "</td>\n";
3959                 }
3960                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3961                         or die_error(undef, "Open git-rev-parse failed");
3962                 my $parent_commit = <$dd>;
3963                 close $dd;
3964                 chomp($parent_commit);
3965                 my $blamed = href(action => 'blame',
3966                                   file_name => $meta->{'filename'},
3967                                   hash_base => $parent_commit);
3968                 print "<td class=\"linenr\">";
3969                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3970                                 -id => "l$lineno",
3971                                 -class => "linenr" },
3972                               esc_html($lineno));
3973                 print "</td>";
3974                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3975                 print "</tr>\n";
3976         }
3977         print "</table>\n";
3978         print "</div>";
3979         close $fd
3980                 or print "Reading blob failed\n";
3981         git_footer_html();
3982 }
3983
3984 sub git_blame {
3985         my $fd;
3986
3987         my ($have_blame) = gitweb_check_feature('blame');
3988         if (!$have_blame) {
3989                 die_error('403 Permission denied', "Permission denied");
3990         }
3991         die_error('404 Not Found', "File name not defined") if (!$file_name);
3992         $hash_base ||= git_get_head_hash($project);
3993         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3994         my %co = parse_commit($hash_base)
3995                 or die_error(undef, "Reading commit failed");
3996         if (!defined $hash) {
3997                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3998                         or die_error(undef, "Error lookup file");
3999         }
4000         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4001                 or die_error(undef, "Open git-annotate failed");
4002         git_header_html();
4003         my $formats_nav =
4004                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4005                         "blob") .
4006                 " | " .
4007                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4008                         "history") .
4009                 " | " .
4010                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4011                         "HEAD");
4012         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4013         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4014         git_print_page_path($file_name, 'blob', $hash_base);
4015         print "<div class=\"page_body\">\n";
4016         print <<HTML;
4017 <table class="blame">
4018   <tr>
4019     <th>Commit</th>
4020     <th>Age</th>
4021     <th>Author</th>
4022     <th>Line</th>
4023     <th>Data</th>
4024   </tr>
4025 HTML
4026         my @line_class = (qw(light dark));
4027         my $line_class_len = scalar (@line_class);
4028         my $line_class_num = $#line_class;
4029         while (my $line = <$fd>) {
4030                 my $long_rev;
4031                 my $short_rev;
4032                 my $author;
4033                 my $time;
4034                 my $lineno;
4035                 my $data;
4036                 my $age;
4037                 my $age_str;
4038                 my $age_class;
4039
4040                 chomp $line;
4041                 $line_class_num = ($line_class_num + 1) % $line_class_len;
4042
4043                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4044                         $long_rev = $1;
4045                         $author   = $2;
4046                         $time     = $3;
4047                         $lineno   = $4;
4048                         $data     = $5;
4049                 } else {
4050                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4051                         next;
4052                 }
4053                 $short_rev  = substr ($long_rev, 0, 8);
4054                 $age        = time () - $time;
4055                 $age_str    = age_string ($age);
4056                 $age_str    =~ s/ /&nbsp;/g;
4057                 $age_class  = age_class($age);
4058                 $author     = esc_html ($author);
4059                 $author     =~ s/ /&nbsp;/g;
4060
4061                 $data = untabify($data);
4062                 $data = esc_html ($data);
4063
4064                 print <<HTML;
4065   <tr class="$line_class[$line_class_num]">
4066     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4067     <td class="$age_class">$age_str</td>
4068     <td>$author</td>
4069     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4070     <td class="pre">$data</td>
4071   </tr>
4072 HTML
4073         } # while (my $line = <$fd>)
4074         print "</table>\n\n";
4075         close $fd
4076                 or print "Reading blob failed.\n";
4077         print "</div>";
4078         git_footer_html();
4079 }
4080
4081 sub git_tags {
4082         my $head = git_get_head_hash($project);
4083         git_header_html();
4084         git_print_page_nav('','', $head,undef,$head);
4085         git_print_header_div('summary', $project);
4086
4087         my @tagslist = git_get_tags_list();
4088         if (@tagslist) {
4089                 git_tags_body(\@tagslist);
4090         }
4091         git_footer_html();
4092 }
4093
4094 sub git_heads {
4095         my $head = git_get_head_hash($project);
4096         git_header_html();
4097         git_print_page_nav('','', $head,undef,$head);
4098         git_print_header_div('summary', $project);
4099
4100         my @headslist = git_get_heads_list();
4101         if (@headslist) {
4102                 git_heads_body(\@headslist, $head);
4103         }
4104         git_footer_html();
4105 }
4106
4107 sub git_blob_plain {
4108         my $expires;
4109
4110         if (!defined $hash) {
4111                 if (defined $file_name) {
4112                         my $base = $hash_base || git_get_head_hash($project);
4113                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4114                                 or die_error(undef, "Error lookup file");
4115                 } else {
4116                         die_error(undef, "No file name defined");
4117                 }
4118         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4119                 # blobs defined by non-textual hash id's can be cached
4120                 $expires = "+1d";
4121         }
4122
4123         my $type = shift;
4124         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4125                 or die_error(undef, "Couldn't cat $file_name, $hash");
4126
4127         $type ||= blob_mimetype($fd, $file_name);
4128
4129         # save as filename, even when no $file_name is given
4130         my $save_as = "$hash";
4131         if (defined $file_name) {
4132                 $save_as = $file_name;
4133         } elsif ($type =~ m/^text\//) {
4134                 $save_as .= '.txt';
4135         }
4136
4137         print $cgi->header(
4138                 -type => "$type",
4139                 -expires=>$expires,
4140                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4141         undef $/;
4142         binmode STDOUT, ':raw';
4143         print <$fd>;
4144         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4145         $/ = "\n";
4146         close $fd;
4147 }
4148
4149 sub git_blob {
4150         my $expires;
4151
4152         if (!defined $hash) {
4153                 if (defined $file_name) {
4154                         my $base = $hash_base || git_get_head_hash($project);
4155                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4156                                 or die_error(undef, "Error lookup file");
4157                 } else {
4158                         die_error(undef, "No file name defined");
4159                 }
4160         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4161                 # blobs defined by non-textual hash id's can be cached
4162                 $expires = "+1d";
4163         }
4164
4165         my ($have_blame) = gitweb_check_feature('blame');
4166         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4167                 or die_error(undef, "Couldn't cat $file_name, $hash");
4168         my $mimetype = blob_mimetype($fd, $file_name);
4169         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4170                 close $fd;
4171                 return git_blob_plain($mimetype);
4172         }
4173         # we can have blame only for text/* mimetype
4174         $have_blame &&= ($mimetype =~ m!^text/!);
4175
4176         git_header_html(undef, $expires);
4177         my $formats_nav = '';
4178         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4179                 if (defined $file_name) {
4180                         if ($have_blame) {
4181                                 $formats_nav .=
4182                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4183                                                                hash=>$hash, file_name=>$file_name)},
4184                                                 "blame") .
4185                                         " | ";
4186                         }
4187                         $formats_nav .=
4188                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4189                                                        hash=>$hash, file_name=>$file_name)},
4190                                         "history") .
4191                                 " | " .
4192                                 $cgi->a({-href => href(action=>"blob_plain",
4193                                                        hash=>$hash, file_name=>$file_name)},
4194                                         "raw") .
4195                                 " | " .
4196                                 $cgi->a({-href => href(action=>"blob",
4197                                                        hash_base=>"HEAD", file_name=>$file_name)},
4198                                         "HEAD");
4199                 } else {
4200                         $formats_nav .=
4201                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4202                 }
4203                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4204                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4205         } else {
4206                 print "<div class=\"page_nav\">\n" .
4207                       "<br/><br/></div>\n" .
4208                       "<div class=\"title\">$hash</div>\n";
4209         }
4210         git_print_page_path($file_name, "blob", $hash_base);
4211         print "<div class=\"page_body\">\n";
4212         if ($mimetype =~ m!^text/!) {
4213                 my $nr;
4214                 while (my $line = <$fd>) {
4215                         chomp $line;
4216                         $nr++;
4217                         $line = untabify($line);
4218                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4219                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4220                 }
4221         } elsif ($mimetype =~ m!^image/!) {
4222                 print qq!<img type="$mimetype"!;
4223                 if ($file_name) {
4224                         print qq! alt="$file_name" title="$file_name"!;
4225                 }
4226                 print qq! src="! .
4227                       href(action=>"blob_plain", hash=>$hash,
4228                            hash_base=>$hash_base, file_name=>$file_name) .
4229                       qq!" />\n!;
4230         }
4231         close $fd
4232                 or print "Reading blob failed.\n";
4233         print "</div>";
4234         git_footer_html();
4235 }
4236
4237 sub git_tree {
4238         if (!defined $hash_base) {
4239                 $hash_base = "HEAD";
4240         }
4241         if (!defined $hash) {
4242                 if (defined $file_name) {
4243                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4244                 } else {
4245                         $hash = $hash_base;
4246                 }
4247         }
4248         $/ = "\0";
4249         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4250                 or die_error(undef, "Open git-ls-tree failed");
4251         my @entries = map { chomp; $_ } <$fd>;
4252         close $fd or die_error(undef, "Reading tree failed");
4253         $/ = "\n";
4254
4255         my $refs = git_get_references();
4256         my $ref = format_ref_marker($refs, $hash_base);
4257         git_header_html();
4258         my $basedir = '';
4259         my ($have_blame) = gitweb_check_feature('blame');
4260         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4261                 my @views_nav = ();
4262                 if (defined $file_name) {
4263                         push @views_nav,
4264                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4265                                                        hash=>$hash, file_name=>$file_name)},
4266                                         "history"),
4267                                 $cgi->a({-href => href(action=>"tree",
4268                                                        hash_base=>"HEAD", file_name=>$file_name)},
4269                                         "HEAD"),
4270                 }
4271                 my $snapshot_links = format_snapshot_links($hash);
4272                 if (defined $snapshot_links) {
4273                         # FIXME: Should be available when we have no hash base as well.
4274                         push @views_nav, $snapshot_links;
4275                 }
4276                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4277                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4278         } else {
4279                 undef $hash_base;
4280                 print "<div class=\"page_nav\">\n";
4281                 print "<br/><br/></div>\n";
4282                 print "<div class=\"title\">$hash</div>\n";
4283         }
4284         if (defined $file_name) {
4285                 $basedir = $file_name;
4286                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4287                         $basedir .= '/';
4288                 }
4289         }
4290         git_print_page_path($file_name, 'tree', $hash_base);
4291         print "<div class=\"page_body\">\n";
4292         print "<table cellspacing=\"0\">\n";
4293         my $alternate = 1;
4294         # '..' (top directory) link if possible
4295         if (defined $hash_base &&
4296             defined $file_name && $file_name =~ m![^/]+$!) {
4297                 if ($alternate) {
4298                         print "<tr class=\"dark\">\n";
4299                 } else {
4300                         print "<tr class=\"light\">\n";
4301                 }
4302                 $alternate ^= 1;
4303
4304                 my $up = $file_name;
4305                 $up =~ s!/?[^/]+$!!;
4306                 undef $up unless $up;
4307                 # based on git_print_tree_entry
4308                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4309                 print '<td class="list">';
4310                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4311                                              file_name=>$up)},
4312                               "..");
4313                 print "</td>\n";
4314                 print "<td class=\"link\"></td>\n";
4315
4316                 print "</tr>\n";
4317         }
4318         foreach my $line (@entries) {
4319                 my %t = parse_ls_tree_line($line, -z => 1);
4320
4321                 if ($alternate) {
4322                         print "<tr class=\"dark\">\n";
4323                 } else {
4324                         print "<tr class=\"light\">\n";
4325                 }
4326                 $alternate ^= 1;
4327
4328                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4329
4330                 print "</tr>\n";
4331         }
4332         print "</table>\n" .
4333               "</div>";
4334         git_footer_html();
4335 }
4336
4337 sub git_snapshot {
4338         my @supported_fmts = gitweb_check_feature('snapshot');
4339         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4340
4341         my $format = $cgi->param('sf');
4342         if (!@supported_fmts) {
4343                 die_error('403 Permission denied', "Permission denied");
4344         }
4345         # default to first supported snapshot format
4346         $format ||= $supported_fmts[0];
4347         if ($format !~ m/^[a-z0-9]+$/) {
4348                 die_error(undef, "Invalid snapshot format parameter");
4349         } elsif (!exists($known_snapshot_formats{$format})) {
4350                 die_error(undef, "Unknown snapshot format");
4351         } elsif (!grep($_ eq $format, @supported_fmts)) {
4352                 die_error(undef, "Unsupported snapshot format");
4353         }
4354
4355         if (!defined $hash) {
4356                 $hash = git_get_head_hash($project);
4357         }
4358
4359         my $git_command = git_cmd_str();
4360         my $name = $project;
4361         $name =~ s,([^/])/*\.git$,$1,;
4362         $name = basename($name);
4363         my $filename = to_utf8($name);
4364         $name =~ s/\047/\047\\\047\047/g;
4365         my $cmd;
4366         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4367         $cmd = "$git_command archive " .
4368                 "--format=$known_snapshot_formats{$format}{'format'} " .
4369                 "--prefix=\'$name\'/ $hash";
4370         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4371                 $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4372         }
4373
4374         print $cgi->header(
4375                 -type => $known_snapshot_formats{$format}{'type'},
4376                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4377                 -status => '200 OK');
4378
4379         open my $fd, "-|", $cmd
4380                 or die_error(undef, "Execute git-archive failed");
4381         binmode STDOUT, ':raw';
4382         print <$fd>;
4383         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4384         close $fd;
4385 }
4386
4387 sub git_log {
4388         my $head = git_get_head_hash($project);
4389         if (!defined $hash) {
4390                 $hash = $head;
4391         }
4392         if (!defined $page) {
4393                 $page = 0;
4394         }
4395         my $refs = git_get_references();
4396
4397         my @commitlist = parse_commits($hash, 101, (100 * $page));
4398
4399         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4400
4401         git_header_html();
4402         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4403
4404         if (!@commitlist) {
4405                 my %co = parse_commit($hash);
4406
4407                 git_print_header_div('summary', $project);
4408                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4409         }
4410         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4411         for (my $i = 0; $i <= $to; $i++) {
4412                 my %co = %{$commitlist[$i]};
4413                 next if !%co;
4414                 my $commit = $co{'id'};
4415                 my $ref = format_ref_marker($refs, $commit);
4416                 my %ad = parse_date($co{'author_epoch'});
4417                 git_print_header_div('commit',
4418                                "<span class=\"age\">$co{'age_string'}</span>" .
4419                                esc_html($co{'title'}) . $ref,
4420                                $commit);
4421                 print "<div class=\"title_text\">\n" .
4422                       "<div class=\"log_link\">\n" .
4423                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4424                       " | " .
4425                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4426                       " | " .
4427                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4428                       "<br/>\n" .
4429                       "</div>\n" .
4430                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4431                       "</div>\n";
4432
4433                 print "<div class=\"log_body\">\n";
4434                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4435                 print "</div>\n";
4436         }
4437         if ($#commitlist >= 100) {
4438                 print "<div class=\"page_nav\">\n";
4439                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4440                                -accesskey => "n", -title => "Alt-n"}, "next");
4441                 print "</div>\n";
4442         }
4443         git_footer_html();
4444 }
4445
4446 sub git_commit {
4447         $hash ||= $hash_base || "HEAD";
4448         my %co = parse_commit($hash);
4449         if (!%co) {
4450                 die_error(undef, "Unknown commit object");
4451         }
4452         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4453         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4454
4455         my $parent  = $co{'parent'};
4456         my $parents = $co{'parents'}; # listref
4457
4458         # we need to prepare $formats_nav before any parameter munging
4459         my $formats_nav;
4460         if (!defined $parent) {
4461                 # --root commitdiff
4462                 $formats_nav .= '(initial)';
4463         } elsif (@$parents == 1) {
4464                 # single parent commit
4465                 $formats_nav .=
4466                         '(parent: ' .
4467                         $cgi->a({-href => href(action=>"commit",
4468                                                hash=>$parent)},
4469                                 esc_html(substr($parent, 0, 7))) .
4470                         ')';
4471         } else {
4472                 # merge commit
4473                 $formats_nav .=
4474                         '(merge: ' .
4475                         join(' ', map {
4476                                 $cgi->a({-href => href(action=>"commit",
4477                                                        hash=>$_)},
4478                                         esc_html(substr($_, 0, 7)));
4479                         } @$parents ) .
4480                         ')';
4481         }
4482
4483         if (!defined $parent) {
4484                 $parent = "--root";
4485         }
4486         my @difftree;
4487         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4488                 @diff_opts,
4489                 (@$parents <= 1 ? $parent : '-c'),
4490                 $hash, "--"
4491                 or die_error(undef, "Open git-diff-tree failed");
4492         @difftree = map { chomp; $_ } <$fd>;
4493         close $fd or die_error(undef, "Reading git-diff-tree failed");
4494
4495         # non-textual hash id's can be cached
4496         my $expires;
4497         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4498                 $expires = "+1d";
4499         }
4500         my $refs = git_get_references();
4501         my $ref = format_ref_marker($refs, $co{'id'});
4502
4503         git_header_html(undef, $expires);
4504         git_print_page_nav('commit', '',
4505                            $hash, $co{'tree'}, $hash,
4506                            $formats_nav);
4507
4508         if (defined $co{'parent'}) {
4509                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4510         } else {
4511                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4512         }
4513         print "<div class=\"title_text\">\n" .
4514               "<table cellspacing=\"0\">\n";
4515         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4516               "<tr>" .
4517               "<td></td><td> $ad{'rfc2822'}";
4518         if ($ad{'hour_local'} < 6) {
4519                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4520                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4521         } else {
4522                 printf(" (%02d:%02d %s)",
4523                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4524         }
4525         print "</td>" .
4526               "</tr>\n";
4527         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4528         print "<tr><td></td><td> $cd{'rfc2822'}" .
4529               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4530               "</td></tr>\n";
4531         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4532         print "<tr>" .
4533               "<td>tree</td>" .
4534               "<td class=\"sha1\">" .
4535               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4536                        class => "list"}, $co{'tree'}) .
4537               "</td>" .
4538               "<td class=\"link\">" .
4539               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4540                       "tree");
4541         my $snapshot_links = format_snapshot_links($hash);
4542         if (defined $snapshot_links) {
4543                 print " | " . $snapshot_links;
4544         }
4545         print "</td>" .
4546               "</tr>\n";
4547
4548         foreach my $par (@$parents) {
4549                 print "<tr>" .
4550                       "<td>parent</td>" .
4551                       "<td class=\"sha1\">" .
4552                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4553                                class => "list"}, $par) .
4554                       "</td>" .
4555                       "<td class=\"link\">" .
4556                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4557                       " | " .
4558                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4559                       "</td>" .
4560                       "</tr>\n";
4561         }
4562         print "</table>".
4563               "</div>\n";
4564
4565         print "<div class=\"page_body\">\n";
4566         git_print_log($co{'comment'});
4567         print "</div>\n";
4568
4569         git_difftree_body(\@difftree, $hash, @$parents);
4570
4571         git_footer_html();
4572 }
4573
4574 sub git_object {
4575         # object is defined by:
4576         # - hash or hash_base alone
4577         # - hash_base and file_name
4578         my $type;
4579
4580         # - hash or hash_base alone
4581         if ($hash || ($hash_base && !defined $file_name)) {
4582                 my $object_id = $hash || $hash_base;
4583
4584                 my $git_command = git_cmd_str();
4585                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4586                         or die_error('404 Not Found', "Object does not exist");
4587                 $type = <$fd>;
4588                 chomp $type;
4589                 close $fd
4590                         or die_error('404 Not Found', "Object does not exist");
4591
4592         # - hash_base and file_name
4593         } elsif ($hash_base && defined $file_name) {
4594                 $file_name =~ s,/+$,,;
4595
4596                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4597                         or die_error('404 Not Found', "Base object does not exist");
4598
4599                 # here errors should not hapen
4600                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4601                         or die_error(undef, "Open git-ls-tree failed");
4602                 my $line = <$fd>;
4603                 close $fd;
4604
4605                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4606                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4607                         die_error('404 Not Found', "File or directory for given base does not exist");
4608                 }
4609                 $type = $2;
4610                 $hash = $3;
4611         } else {
4612                 die_error('404 Not Found', "Not enough information to find object");
4613         }
4614
4615         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4616                                           hash=>$hash, hash_base=>$hash_base,
4617                                           file_name=>$file_name),
4618                              -status => '302 Found');
4619 }
4620
4621 sub git_blobdiff {
4622         my $format = shift || 'html';
4623
4624         my $fd;
4625         my @difftree;
4626         my %diffinfo;
4627         my $expires;
4628
4629         # preparing $fd and %diffinfo for git_patchset_body
4630         # new style URI
4631         if (defined $hash_base && defined $hash_parent_base) {
4632                 if (defined $file_name) {
4633                         # read raw output
4634                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4635                                 $hash_parent_base, $hash_base,
4636                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4637                                 or die_error(undef, "Open git-diff-tree failed");
4638                         @difftree = map { chomp; $_ } <$fd>;
4639                         close $fd
4640                                 or die_error(undef, "Reading git-diff-tree failed");
4641                         @difftree
4642                                 or die_error('404 Not Found', "Blob diff not found");
4643
4644                 } elsif (defined $hash &&
4645                          $hash =~ /[0-9a-fA-F]{40}/) {
4646                         # try to find filename from $hash
4647
4648                         # read filtered raw output
4649                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4650                                 $hash_parent_base, $hash_base, "--"
4651                                 or die_error(undef, "Open git-diff-tree failed");
4652                         @difftree =
4653                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4654                                 # $hash == to_id
4655                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4656                                 map { chomp; $_ } <$fd>;
4657                         close $fd
4658                                 or die_error(undef, "Reading git-diff-tree failed");
4659                         @difftree
4660                                 or die_error('404 Not Found', "Blob diff not found");
4661
4662                 } else {
4663                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4664                 }
4665
4666                 if (@difftree > 1) {
4667                         die_error('404 Not Found', "Ambiguous blob diff specification");
4668                 }
4669
4670                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4671                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4672                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4673
4674                 $hash_parent ||= $diffinfo{'from_id'};
4675                 $hash        ||= $diffinfo{'to_id'};
4676
4677                 # non-textual hash id's can be cached
4678                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4679                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4680                         $expires = '+1d';
4681                 }
4682
4683                 # open patch output
4684                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4685                         '-p', ($format eq 'html' ? "--full-index" : ()),
4686                         $hash_parent_base, $hash_base,
4687                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4688                         or die_error(undef, "Open git-diff-tree failed");
4689         }
4690
4691         # old/legacy style URI
4692         if (!%diffinfo && # if new style URI failed
4693             defined $hash && defined $hash_parent) {
4694                 # fake git-diff-tree raw output
4695                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4696                 $diffinfo{'from_id'} = $hash_parent;
4697                 $diffinfo{'to_id'}   = $hash;
4698                 if (defined $file_name) {
4699                         if (defined $file_parent) {
4700                                 $diffinfo{'status'} = '2';
4701                                 $diffinfo{'from_file'} = $file_parent;
4702                                 $diffinfo{'to_file'}   = $file_name;
4703                         } else { # assume not renamed
4704                                 $diffinfo{'status'} = '1';
4705                                 $diffinfo{'from_file'} = $file_name;
4706                                 $diffinfo{'to_file'}   = $file_name;
4707                         }
4708                 } else { # no filename given
4709                         $diffinfo{'status'} = '2';
4710                         $diffinfo{'from_file'} = $hash_parent;
4711                         $diffinfo{'to_file'}   = $hash;
4712                 }
4713
4714                 # non-textual hash id's can be cached
4715                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4716                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4717                         $expires = '+1d';
4718                 }
4719
4720                 # open patch output
4721                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4722                         '-p', ($format eq 'html' ? "--full-index" : ()),
4723                         $hash_parent, $hash, "--"
4724                         or die_error(undef, "Open git-diff failed");
4725         } else  {
4726                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4727                         unless %diffinfo;
4728         }
4729
4730         # header
4731         if ($format eq 'html') {
4732                 my $formats_nav =
4733                         $cgi->a({-href => href(action=>"blobdiff_plain",
4734                                                hash=>$hash, hash_parent=>$hash_parent,
4735                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4736                                                file_name=>$file_name, file_parent=>$file_parent)},
4737                                 "raw");
4738                 git_header_html(undef, $expires);
4739                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4740                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4741                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4742                 } else {
4743                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4744                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4745                 }
4746                 if (defined $file_name) {
4747                         git_print_page_path($file_name, "blob", $hash_base);
4748                 } else {
4749                         print "<div class=\"page_path\"></div>\n";
4750                 }
4751
4752         } elsif ($format eq 'plain') {
4753                 print $cgi->header(
4754                         -type => 'text/plain',
4755                         -charset => 'utf-8',
4756                         -expires => $expires,
4757                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4758
4759                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4760
4761         } else {
4762                 die_error(undef, "Unknown blobdiff format");
4763         }
4764
4765         # patch
4766         if ($format eq 'html') {
4767                 print "<div class=\"page_body\">\n";
4768
4769                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4770                 close $fd;
4771
4772                 print "</div>\n"; # class="page_body"
4773                 git_footer_html();
4774
4775         } else {
4776                 while (my $line = <$fd>) {
4777                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4778                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4779
4780                         print $line;
4781
4782                         last if $line =~ m!^\+\+\+!;
4783                 }
4784                 local $/ = undef;
4785                 print <$fd>;
4786                 close $fd;
4787         }
4788 }
4789
4790 sub git_blobdiff_plain {
4791         git_blobdiff('plain');
4792 }
4793
4794 sub git_commitdiff {
4795         my $format = shift || 'html';
4796         $hash ||= $hash_base || "HEAD";
4797         my %co = parse_commit($hash);
4798         if (!%co) {
4799                 die_error(undef, "Unknown commit object");
4800         }
4801
4802         # choose format for commitdiff for merge
4803         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4804                 $hash_parent = '--cc';
4805         }
4806         # we need to prepare $formats_nav before almost any parameter munging
4807         my $formats_nav;
4808         if ($format eq 'html') {
4809                 $formats_nav =
4810                         $cgi->a({-href => href(action=>"commitdiff_plain",
4811                                                hash=>$hash, hash_parent=>$hash_parent)},
4812                                 "raw");
4813
4814                 if (defined $hash_parent &&
4815                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4816                         # commitdiff with two commits given
4817                         my $hash_parent_short = $hash_parent;
4818                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4819                                 $hash_parent_short = substr($hash_parent, 0, 7);
4820                         }
4821                         $formats_nav .=
4822                                 ' (from';
4823                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4824                                 if ($co{'parents'}[$i] eq $hash_parent) {
4825                                         $formats_nav .= ' parent ' . ($i+1);
4826                                         last;
4827                                 }
4828                         }
4829                         $formats_nav .= ': ' .
4830                                 $cgi->a({-href => href(action=>"commitdiff",
4831                                                        hash=>$hash_parent)},
4832                                         esc_html($hash_parent_short)) .
4833                                 ')';
4834                 } elsif (!$co{'parent'}) {
4835                         # --root commitdiff
4836                         $formats_nav .= ' (initial)';
4837                 } elsif (scalar @{$co{'parents'}} == 1) {
4838                         # single parent commit
4839                         $formats_nav .=
4840                                 ' (parent: ' .
4841                                 $cgi->a({-href => href(action=>"commitdiff",
4842                                                        hash=>$co{'parent'})},
4843                                         esc_html(substr($co{'parent'}, 0, 7))) .
4844                                 ')';
4845                 } else {
4846                         # merge commit
4847                         if ($hash_parent eq '--cc') {
4848                                 $formats_nav .= ' | ' .
4849                                         $cgi->a({-href => href(action=>"commitdiff",
4850                                                                hash=>$hash, hash_parent=>'-c')},
4851                                                 'combined');
4852                         } else { # $hash_parent eq '-c'
4853                                 $formats_nav .= ' | ' .
4854                                         $cgi->a({-href => href(action=>"commitdiff",
4855                                                                hash=>$hash, hash_parent=>'--cc')},
4856                                                 'compact');
4857                         }
4858                         $formats_nav .=
4859                                 ' (merge: ' .
4860                                 join(' ', map {
4861                                         $cgi->a({-href => href(action=>"commitdiff",
4862                                                                hash=>$_)},
4863                                                 esc_html(substr($_, 0, 7)));
4864                                 } @{$co{'parents'}} ) .
4865                                 ')';
4866                 }
4867         }
4868
4869         my $hash_parent_param = $hash_parent;
4870         if (!defined $hash_parent_param) {
4871                 # --cc for multiple parents, --root for parentless
4872                 $hash_parent_param =
4873                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4874         }
4875
4876         # read commitdiff
4877         my $fd;
4878         my @difftree;
4879         if ($format eq 'html') {
4880                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4881                         "--no-commit-id", "--patch-with-raw", "--full-index",
4882                         $hash_parent_param, $hash, "--"
4883                         or die_error(undef, "Open git-diff-tree failed");
4884
4885                 while (my $line = <$fd>) {
4886                         chomp $line;
4887                         # empty line ends raw part of diff-tree output
4888                         last unless $line;
4889                         push @difftree, scalar parse_difftree_raw_line($line);
4890                 }
4891
4892         } elsif ($format eq 'plain') {
4893                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4894                         '-p', $hash_parent_param, $hash, "--"
4895                         or die_error(undef, "Open git-diff-tree failed");
4896
4897         } else {
4898                 die_error(undef, "Unknown commitdiff format");
4899         }
4900
4901         # non-textual hash id's can be cached
4902         my $expires;
4903         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4904                 $expires = "+1d";
4905         }
4906
4907         # write commit message
4908         if ($format eq 'html') {
4909                 my $refs = git_get_references();
4910                 my $ref = format_ref_marker($refs, $co{'id'});
4911
4912                 git_header_html(undef, $expires);
4913                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4914                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4915                 git_print_authorship(\%co);
4916                 print "<div class=\"page_body\">\n";
4917                 if (@{$co{'comment'}} > 1) {
4918                         print "<div class=\"log\">\n";
4919                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4920                         print "</div>\n"; # class="log"
4921                 }
4922
4923         } elsif ($format eq 'plain') {
4924                 my $refs = git_get_references("tags");
4925                 my $tagname = git_get_rev_name_tags($hash);
4926                 my $filename = basename($project) . "-$hash.patch";
4927
4928                 print $cgi->header(
4929                         -type => 'text/plain',
4930                         -charset => 'utf-8',
4931                         -expires => $expires,
4932                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4933                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4934                 print <<TEXT;
4935 From: $co{'author'}
4936 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4937 Subject: $co{'title'}
4938 TEXT
4939                 print "X-Git-Tag: $tagname\n" if $tagname;
4940                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4941
4942                 foreach my $line (@{$co{'comment'}}) {
4943                         print "$line\n";
4944                 }
4945                 print "---\n\n";
4946         }
4947
4948         # write patch
4949         if ($format eq 'html') {
4950                 my $use_parents = !defined $hash_parent ||
4951                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4952                 git_difftree_body(\@difftree, $hash,
4953                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4954                 print "<br/>\n";
4955
4956                 git_patchset_body($fd, \@difftree, $hash,
4957                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4958                 close $fd;
4959                 print "</div>\n"; # class="page_body"
4960                 git_footer_html();
4961
4962         } elsif ($format eq 'plain') {
4963                 local $/ = undef;
4964                 print <$fd>;
4965                 close $fd
4966                         or print "Reading git-diff-tree failed\n";
4967         }
4968 }
4969
4970 sub git_commitdiff_plain {
4971         git_commitdiff('plain');
4972 }
4973
4974 sub git_history {
4975         if (!defined $hash_base) {
4976                 $hash_base = git_get_head_hash($project);
4977         }
4978         if (!defined $page) {
4979                 $page = 0;
4980         }
4981         my $ftype;
4982         my %co = parse_commit($hash_base);
4983         if (!%co) {
4984                 die_error(undef, "Unknown commit object");
4985         }
4986
4987         my $refs = git_get_references();
4988         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4989
4990         if (!defined $hash && defined $file_name) {
4991                 $hash = git_get_hash_by_path($hash_base, $file_name);
4992         }
4993         if (defined $hash) {
4994                 $ftype = git_get_type($hash);
4995         }
4996
4997         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4998
4999         my $paging_nav = '';
5000         if ($page > 0) {
5001                 $paging_nav .=
5002                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5003                                                file_name=>$file_name)},
5004                                 "first");
5005                 $paging_nav .= " &sdot; " .
5006                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5007                                                file_name=>$file_name, page=>$page-1),
5008                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5009         } else {
5010                 $paging_nav .= "first";
5011                 $paging_nav .= " &sdot; prev";
5012         }
5013         if ($#commitlist >= 100) {
5014                 $paging_nav .= " &sdot; " .
5015                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5016                                                file_name=>$file_name, page=>$page+1),
5017                                  -accesskey => "n", -title => "Alt-n"}, "next");
5018         } else {
5019                 $paging_nav .= " &sdot; next";
5020         }
5021         my $next_link = '';
5022         if ($#commitlist >= 100) {
5023                 $next_link =
5024                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5025                                                file_name=>$file_name, page=>$page+1),
5026                                  -accesskey => "n", -title => "Alt-n"}, "next");
5027         }
5028
5029         git_header_html();
5030         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5031         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5032         git_print_page_path($file_name, $ftype, $hash_base);
5033
5034         git_history_body(\@commitlist, 0, 99,
5035                          $refs, $hash_base, $ftype, $next_link);
5036
5037         git_footer_html();
5038 }
5039
5040 sub git_search {
5041         my ($have_search) = gitweb_check_feature('search');
5042         if (!$have_search) {
5043                 die_error('403 Permission denied', "Permission denied");
5044         }
5045         if (!defined $searchtext) {
5046                 die_error(undef, "Text field empty");
5047         }
5048         if (!defined $hash) {
5049                 $hash = git_get_head_hash($project);
5050         }
5051         my %co = parse_commit($hash);
5052         if (!%co) {
5053                 die_error(undef, "Unknown commit object");
5054         }
5055         if (!defined $page) {
5056                 $page = 0;
5057         }
5058
5059         $searchtype ||= 'commit';
5060         if ($searchtype eq 'pickaxe') {
5061                 # pickaxe may take all resources of your box and run for several minutes
5062                 # with every query - so decide by yourself how public you make this feature
5063                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5064                 if (!$have_pickaxe) {
5065                         die_error('403 Permission denied', "Permission denied");
5066                 }
5067         }
5068         if ($searchtype eq 'grep') {
5069                 my ($have_grep) = gitweb_check_feature('grep');
5070                 if (!$have_grep) {
5071                         die_error('403 Permission denied', "Permission denied");
5072                 }
5073         }
5074
5075         git_header_html();
5076
5077         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5078                 my $greptype;
5079                 if ($searchtype eq 'commit') {
5080                         $greptype = "--grep=";
5081                 } elsif ($searchtype eq 'author') {
5082                         $greptype = "--author=";
5083                 } elsif ($searchtype eq 'committer') {
5084                         $greptype = "--committer=";
5085                 }
5086                 $greptype .= $search_regexp;
5087                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5088
5089                 my $paging_nav = '';
5090                 if ($page > 0) {
5091                         $paging_nav .=
5092                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5093                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
5094                                         "first");
5095                         $paging_nav .= " &sdot; " .
5096                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5097                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5098                                                        page=>$page-1),
5099                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5100                 } else {
5101                         $paging_nav .= "first";
5102                         $paging_nav .= " &sdot; prev";
5103                 }
5104                 if ($#commitlist >= 100) {
5105                         $paging_nav .= " &sdot; " .
5106                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5107                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5108                                                        page=>$page+1),
5109                                          -accesskey => "n", -title => "Alt-n"}, "next");
5110                 } else {
5111                         $paging_nav .= " &sdot; next";
5112                 }
5113                 my $next_link = '';
5114                 if ($#commitlist >= 100) {
5115                         $next_link =
5116                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5117                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5118                                                        page=>$page+1),
5119                                          -accesskey => "n", -title => "Alt-n"}, "next");
5120                 }
5121
5122                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5123                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5124                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5125         }
5126
5127         if ($searchtype eq 'pickaxe') {
5128                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5129                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5130
5131                 print "<table cellspacing=\"0\">\n";
5132                 my $alternate = 1;
5133                 $/ = "\n";
5134                 my $git_command = git_cmd_str();
5135                 my $searchqtext = $searchtext;
5136                 $searchqtext =~ s/'/'\\''/;
5137                 open my $fd, "-|", "$git_command rev-list $hash | " .
5138                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5139                 undef %co;
5140                 my @files;
5141                 while (my $line = <$fd>) {
5142                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5143                                 my %set;
5144                                 $set{'file'} = $6;
5145                                 $set{'from_id'} = $3;
5146                                 $set{'to_id'} = $4;
5147                                 $set{'id'} = $set{'to_id'};
5148                                 if ($set{'id'} =~ m/0{40}/) {
5149                                         $set{'id'} = $set{'from_id'};
5150                                 }
5151                                 if ($set{'id'} =~ m/0{40}/) {
5152                                         next;
5153                                 }
5154                                 push @files, \%set;
5155                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5156                                 if (%co) {
5157                                         if ($alternate) {
5158                                                 print "<tr class=\"dark\">\n";
5159                                         } else {
5160                                                 print "<tr class=\"light\">\n";
5161                                         }
5162                                         $alternate ^= 1;
5163                                         my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5164                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5165                                               "<td><i>" . $author . "</i></td>\n" .
5166                                               "<td>" .
5167                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5168                                                       -class => "list subject"},
5169                                                       chop_and_escape_str($co{'title'}, 50) . "<br/>");
5170                                         while (my $setref = shift @files) {
5171                                                 my %set = %$setref;
5172                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5173                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5174                                                               -class => "list"},
5175                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5176                                                       "<br/>\n";
5177                                         }
5178                                         print "</td>\n" .
5179                                               "<td class=\"link\">" .
5180                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5181                                               " | " .
5182                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5183                                         print "</td>\n" .
5184                                               "</tr>\n";
5185                                 }
5186                                 %co = parse_commit($1);
5187                         }
5188                 }
5189                 close $fd;
5190
5191                 print "</table>\n";
5192         }
5193
5194         if ($searchtype eq 'grep') {
5195                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5196                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5197
5198                 print "<table cellspacing=\"0\">\n";
5199                 my $alternate = 1;
5200                 my $matches = 0;
5201                 $/ = "\n";
5202                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5203                 my $lastfile = '';
5204                 while (my $line = <$fd>) {
5205                         chomp $line;
5206                         my ($file, $lno, $ltext, $binary);
5207                         last if ($matches++ > 1000);
5208                         if ($line =~ /^Binary file (.+) matches$/) {
5209                                 $file = $1;
5210                                 $binary = 1;
5211                         } else {
5212                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5213                         }
5214                         if ($file ne $lastfile) {
5215                                 $lastfile and print "</td></tr>\n";
5216                                 if ($alternate++) {
5217                                         print "<tr class=\"dark\">\n";
5218                                 } else {
5219                                         print "<tr class=\"light\">\n";
5220                                 }
5221                                 print "<td class=\"list\">".
5222                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5223                                                                file_name=>"$file"),
5224                                                 -class => "list"}, esc_path($file));
5225                                 print "</td><td>\n";
5226                                 $lastfile = $file;
5227                         }
5228                         if ($binary) {
5229                                 print "<div class=\"binary\">Binary file</div>\n";
5230                         } else {
5231                                 $ltext = untabify($ltext);
5232                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5233                                         $ltext = esc_html($1, -nbsp=>1);
5234                                         $ltext .= '<span class="match">';
5235                                         $ltext .= esc_html($2, -nbsp=>1);
5236                                         $ltext .= '</span>';
5237                                         $ltext .= esc_html($3, -nbsp=>1);
5238                                 } else {
5239                                         $ltext = esc_html($ltext, -nbsp=>1);
5240                                 }
5241                                 print "<div class=\"pre\">" .
5242                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5243                                                                file_name=>"$file").'#l'.$lno,
5244                                                 -class => "linenr"}, sprintf('%4i', $lno))
5245                                         . ' ' .  $ltext . "</div>\n";
5246                         }
5247                 }
5248                 if ($lastfile) {
5249                         print "</td></tr>\n";
5250                         if ($matches > 1000) {
5251                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5252                         }
5253                 } else {
5254                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5255                 }
5256                 close $fd;
5257
5258                 print "</table>\n";
5259         }
5260         git_footer_html();
5261 }
5262
5263 sub git_search_help {
5264         git_header_html();
5265         git_print_page_nav('','', $hash,$hash,$hash);
5266         print <<EOT;
5267 <dl>
5268 <dt><b>commit</b></dt>
5269 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5270 EOT
5271         my ($have_grep) = gitweb_check_feature('grep');
5272         if ($have_grep) {
5273                 print <<EOT;
5274 <dt><b>grep</b></dt>
5275 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5276     a different one) are searched for the given
5277 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5278 (POSIX extended) and the matches are listed. On large
5279 trees, this search can take a while and put some strain on the server, so please use it with
5280 some consideration.</dd>
5281 EOT
5282         }
5283         print <<EOT;
5284 <dt><b>author</b></dt>
5285 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5286 <dt><b>committer</b></dt>
5287 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5288 EOT
5289         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5290         if ($have_pickaxe) {
5291                 print <<EOT;
5292 <dt><b>pickaxe</b></dt>
5293 <dd>All commits that caused the string to appear or disappear from any file (changes that
5294 added, removed or "modified" the string) will be listed. This search can take a while and
5295 takes a lot of strain on the server, so please use it wisely.</dd>
5296 EOT
5297         }
5298         print "</dl>\n";
5299         git_footer_html();
5300 }
5301
5302 sub git_shortlog {
5303         my $head = git_get_head_hash($project);
5304         if (!defined $hash) {
5305                 $hash = $head;
5306         }
5307         if (!defined $page) {
5308                 $page = 0;
5309         }
5310         my $refs = git_get_references();
5311
5312         my @commitlist = parse_commits($hash, 101, (100 * $page));
5313
5314         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5315         my $next_link = '';
5316         if ($#commitlist >= 100) {
5317                 $next_link =
5318                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5319                                  -accesskey => "n", -title => "Alt-n"}, "next");
5320         }
5321
5322         git_header_html();
5323         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5324         git_print_header_div('summary', $project);
5325
5326         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5327
5328         git_footer_html();
5329 }
5330
5331 ## ......................................................................
5332 ## feeds (RSS, Atom; OPML)
5333
5334 sub git_feed {
5335         my $format = shift || 'atom';
5336         my ($have_blame) = gitweb_check_feature('blame');
5337
5338         # Atom: http://www.atomenabled.org/developers/syndication/
5339         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5340         if ($format ne 'rss' && $format ne 'atom') {
5341                 die_error(undef, "Unknown web feed format");
5342         }
5343
5344         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5345         my $head = $hash || 'HEAD';
5346         my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5347
5348         my %latest_commit;
5349         my %latest_date;
5350         my $content_type = "application/$format+xml";
5351         if (defined $cgi->http('HTTP_ACCEPT') &&
5352                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5353                 # browser (feed reader) prefers text/xml
5354                 $content_type = 'text/xml';
5355         }
5356         if (defined($commitlist[0])) {
5357                 %latest_commit = %{$commitlist[0]};
5358                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5359                 print $cgi->header(
5360                         -type => $content_type,
5361                         -charset => 'utf-8',
5362                         -last_modified => $latest_date{'rfc2822'});
5363         } else {
5364                 print $cgi->header(
5365                         -type => $content_type,
5366                         -charset => 'utf-8');
5367         }
5368
5369         # Optimization: skip generating the body if client asks only
5370         # for Last-Modified date.
5371         return if ($cgi->request_method() eq 'HEAD');
5372
5373         # header variables
5374         my $title = "$site_name - $project/$action";
5375         my $feed_type = 'log';
5376         if (defined $hash) {
5377                 $title .= " - '$hash'";
5378                 $feed_type = 'branch log';
5379                 if (defined $file_name) {
5380                         $title .= " :: $file_name";
5381                         $feed_type = 'history';
5382                 }
5383         } elsif (defined $file_name) {
5384                 $title .= " - $file_name";
5385                 $feed_type = 'history';
5386         }
5387         $title .= " $feed_type";
5388         my $descr = git_get_project_description($project);
5389         if (defined $descr) {
5390                 $descr = esc_html($descr);
5391         } else {
5392                 $descr = "$project " .
5393                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5394                          " feed";
5395         }
5396         my $owner = git_get_project_owner($project);
5397         $owner = esc_html($owner);
5398
5399         #header
5400         my $alt_url;
5401         if (defined $file_name) {
5402                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5403         } elsif (defined $hash) {
5404                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5405         } else {
5406                 $alt_url = href(-full=>1, action=>"summary");
5407         }
5408         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5409         if ($format eq 'rss') {
5410                 print <<XML;
5411 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5412 <channel>
5413 XML
5414                 print "<title>$title</title>\n" .
5415                       "<link>$alt_url</link>\n" .
5416                       "<description>$descr</description>\n" .
5417                       "<language>en</language>\n";
5418         } elsif ($format eq 'atom') {
5419                 print <<XML;
5420 <feed xmlns="http://www.w3.org/2005/Atom">
5421 XML
5422                 print "<title>$title</title>\n" .
5423                       "<subtitle>$descr</subtitle>\n" .
5424                       '<link rel="alternate" type="text/html" href="' .
5425                       $alt_url . '" />' . "\n" .
5426                       '<link rel="self" type="' . $content_type . '" href="' .
5427                       $cgi->self_url() . '" />' . "\n" .
5428                       "<id>" . href(-full=>1) . "</id>\n" .
5429                       # use project owner for feed author
5430                       "<author><name>$owner</name></author>\n";
5431                 if (defined $favicon) {
5432                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5433                 }
5434                 if (defined $logo_url) {
5435                         # not twice as wide as tall: 72 x 27 pixels
5436                         print "<logo>" . esc_url($logo) . "</logo>\n";
5437                 }
5438                 if (! %latest_date) {
5439                         # dummy date to keep the feed valid until commits trickle in:
5440                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5441                 } else {
5442                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5443                 }
5444         }
5445
5446         # contents
5447         for (my $i = 0; $i <= $#commitlist; $i++) {
5448                 my %co = %{$commitlist[$i]};
5449                 my $commit = $co{'id'};
5450                 # we read 150, we always show 30 and the ones more recent than 48 hours
5451                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5452                         last;
5453                 }
5454                 my %cd = parse_date($co{'author_epoch'});
5455
5456                 # get list of changed files
5457                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5458                         $co{'parent'} || "--root",
5459                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5460                         or next;
5461                 my @difftree = map { chomp; $_ } <$fd>;
5462                 close $fd
5463                         or next;
5464
5465                 # print element (entry, item)
5466                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5467                 if ($format eq 'rss') {
5468                         print "<item>\n" .
5469                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5470                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5471                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5472                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5473                               "<link>$co_url</link>\n" .
5474                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5475                               "<content:encoded>" .
5476                               "<![CDATA[\n";
5477                 } elsif ($format eq 'atom') {
5478                         print "<entry>\n" .
5479                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5480                               "<updated>$cd{'iso-8601'}</updated>\n" .
5481                               "<author>\n" .
5482                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5483                         if ($co{'author_email'}) {
5484                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5485                         }
5486                         print "</author>\n" .
5487                               # use committer for contributor
5488                               "<contributor>\n" .
5489                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5490                         if ($co{'committer_email'}) {
5491                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5492                         }
5493                         print "</contributor>\n" .
5494                               "<published>$cd{'iso-8601'}</published>\n" .
5495                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5496                               "<id>$co_url</id>\n" .
5497                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5498                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5499                 }
5500                 my $comment = $co{'comment'};
5501                 print "<pre>\n";
5502                 foreach my $line (@$comment) {
5503                         $line = esc_html($line);
5504                         print "$line\n";
5505                 }
5506                 print "</pre><ul>\n";
5507                 foreach my $difftree_line (@difftree) {
5508                         my %difftree = parse_difftree_raw_line($difftree_line);
5509                         next if !$difftree{'from_id'};
5510
5511                         my $file = $difftree{'file'} || $difftree{'to_file'};
5512
5513                         print "<li>" .
5514                               "[" .
5515                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5516                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5517                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5518                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5519                                       -title => "diff"}, 'D');
5520                         if ($have_blame) {
5521                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5522                                                              file_name=>$file, hash_base=>$commit),
5523                                               -title => "blame"}, 'B');
5524                         }
5525                         # if this is not a feed of a file history
5526                         if (!defined $file_name || $file_name ne $file) {
5527                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5528                                                              file_name=>$file, hash=>$commit),
5529                                               -title => "history"}, 'H');
5530                         }
5531                         $file = esc_path($file);
5532                         print "] ".
5533                               "$file</li>\n";
5534                 }
5535                 if ($format eq 'rss') {
5536                         print "</ul>]]>\n" .
5537                               "</content:encoded>\n" .
5538                               "</item>\n";
5539                 } elsif ($format eq 'atom') {
5540                         print "</ul>\n</div>\n" .
5541                               "</content>\n" .
5542                               "</entry>\n";
5543                 }
5544         }
5545
5546         # end of feed
5547         if ($format eq 'rss') {
5548                 print "</channel>\n</rss>\n";
5549         }       elsif ($format eq 'atom') {
5550                 print "</feed>\n";
5551         }
5552 }
5553
5554 sub git_rss {
5555         git_feed('rss');
5556 }
5557
5558 sub git_atom {
5559         git_feed('atom');
5560 }
5561
5562 sub git_opml {
5563         my @list = git_get_projects_list();
5564
5565         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5566         print <<XML;
5567 <?xml version="1.0" encoding="utf-8"?>
5568 <opml version="1.0">
5569 <head>
5570   <title>$site_name OPML Export</title>
5571 </head>
5572 <body>
5573 <outline text="git RSS feeds">
5574 XML
5575
5576         foreach my $pr (@list) {
5577                 my %proj = %$pr;
5578                 my $head = git_get_head_hash($proj{'path'});
5579                 if (!defined $head) {
5580                         next;
5581                 }
5582                 $git_dir = "$projectroot/$proj{'path'}";
5583                 my %co = parse_commit($head);
5584                 if (!%co) {
5585                         next;
5586                 }
5587
5588                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5589                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5590                 my $html = "$my_url?p=$proj{'path'};a=summary";
5591                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5592         }
5593         print <<XML;
5594 </outline>
5595 </body>
5596 </opml>
5597 XML
5598 }