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