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