gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # fs traversing limit for getting project list
  39 # the number is relative to the projectroot
  40 our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri || "/";
  44
  45 # string of the home link on top of all pages
  46 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48 # name of your site or organization to appear in page titles
  49 # replace this with something more descriptive for clearer bookmarks
  50 our $site_name = "++GITWEB_SITENAME++"
  51                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53 # filename of html text to include at top of each page
  54 our $site_header = "++GITWEB_SITE_HEADER++";
  55 # html text to include at home page
  56 our $home_text = "++GITWEB_HOMETEXT++";
  57 # filename of html text to include at bottom of each page
  58 our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60 # URI of stylesheets
  61 our @stylesheets = ("++GITWEB_CSS++");
  62 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63 our $stylesheet = undef;
  64 # URI of GIT logo (72x27 size)
  65 our $logo = "++GITWEB_LOGO++";
  66 # URI of GIT favicon, assumed to be image/png type
  67 our $favicon = "++GITWEB_FAVICON++";
  68
  69 # URI and label (title) of GIT logo link
  70 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  71 #our $logo_label = "git documentation";
  72 our $logo_url = "http://git.or.cz/";
  73 our $logo_label = "git homepage";
  74
  75 # source of projects list
  76 our $projects_list = "++GITWEB_LIST++";
  77
  78 # the width (in characters) of the projects list "Description" column
  79 our $projects_list_description_width = 25;
  80
  81 # default order of projects list
  82 # valid values are none, project, descr, owner, and age
  83 our $default_projects_order = "project";
  84
  85 # show repository only if this file exists
  86 # (only effective if this variable evaluates to true)
  87 our $export_ok = "++GITWEB_EXPORT_OK++";
  88
  89 # only allow viewing of repositories also shown on the overview page
  90 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  91
  92 # list of git base URLs used for URL to where fetch project from,
  93 # i.e. full URL is "$git_base_url/$project"
  94 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  95
  96 # default blob_plain mimetype and default charset for text/plain blob
  97 our $default_blob_plain_mimetype = 'text/plain';
  98 our $default_text_plain_charset  = undef;
  99
 100 # file to use for guessing MIME types before trying /etc/mime.types
 101 # (relative to the current git repository)
 102 our $mimetypes_file = undef;
 103
 104 # assume this charset if line contains non-UTF-8 characters;
 105 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 106 # for which encoding all byte sequences are valid, for example
 107 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 108 # could be even 'utf-8' for the old behavior)
 109 our $fallback_encoding = 'latin1';
 110
 111 # rename detection options for git-diff and git-diff-tree
 112 # - default is '-M', with the cost proportional to
 113 #   (number of removed files) * (number of new files).
 114 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 115 #   (number of changed files + number of removed files) * (number of new files)
 116 # - even more costly is '-C', '--find-copies-harder' with cost
 117 #   (number of files in the original tree) * (number of new files)
 118 # - one might want to include '-B' option, e.g. '-B', '-M'
 119 our @diff_opts = ('-M'); # taken from git_commit
 120
 121 # information about snapshot formats that gitweb is capable of serving
 122 our %known_snapshot_formats = (
 123         # name => {
 124         #       'display' => display name,
 125         #       'type' => mime type,
 126         #       'suffix' => filename suffix,
 127         #       'format' => --format for git-archive,
 128         #       'compressor' => [compressor command and arguments]
 129         #                       (array reference, optional)}
 130         #
 131         'tgz' => {
 132                 'display' => 'tar.gz',
 133                 'type' => 'application/x-gzip',
 134                 'suffix' => '.tar.gz',
 135                 'format' => 'tar',
 136                 'compressor' => ['gzip']},
 137
 138         'tbz2' => {
 139                 'display' => 'tar.bz2',
 140                 'type' => 'application/x-bzip2',
 141                 'suffix' => '.tar.bz2',
 142                 'format' => 'tar',
 143                 'compressor' => ['bzip2']},
 144
 145         'zip' => {
 146                 'display' => 'zip',
 147                 'type' => 'application/x-zip',
 148                 'suffix' => '.zip',
 149                 'format' => 'zip'},
 150 );
 151
 152 # Aliases so we understand old gitweb.snapshot values in repository
 153 # configuration.
 154 our %known_snapshot_format_aliases = (
 155         'gzip'  => 'tgz',
 156         'bzip2' => 'tbz2',
 157
 158         # backward compatibility: legacy gitweb config support
 159         'x-gzip' => undef, 'gz' => undef,
 160         'x-bzip2' => undef, 'bz2' => undef,
 161         'x-zip' => undef, '' => undef,
 162 );
 163
 164 # You define site-wide feature defaults here; override them with
 165 # $GITWEB_CONFIG as necessary.
 166 our %feature = (
 167         # feature => {
 168         #       'sub' => feature-sub (subroutine),
 169         #       'override' => allow-override (boolean),
 170         #       'default' => [ default options...] (array reference)}
 171         #
 172         # if feature is overridable (it means that allow-override has true value),
 173         # then feature-sub will be called with default options as parameters;
 174         # return value of feature-sub indicates if to enable specified feature
 175         #
 176         # if there is no 'sub' key (no feature-sub), then feature cannot be
 177         # overriden
 178         #
 179         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 180
 181         # Enable the 'blame' blob view, showing the last commit that modified
 182         # each line in the file. This can be very CPU-intensive.
 183
 184         # To enable system wide have in $GITWEB_CONFIG
 185         # $feature{'blame'}{'default'} = [1];
 186         # To have project specific config enable override in $GITWEB_CONFIG
 187         # $feature{'blame'}{'override'} = 1;
 188         # and in project config gitweb.blame = 0|1;
 189         'blame' => {
 190                 'sub' => \&feature_blame,
 191                 'override' => 0,
 192                 'default' => [0]},
 193
 194         # Enable the 'snapshot' link, providing a compressed archive of any
 195         # tree. This can potentially generate high traffic if you have large
 196         # project.
 197
 198         # Value is a list of formats defined in %known_snapshot_formats that
 199         # you wish to offer.
 200         # To disable system wide have in $GITWEB_CONFIG
 201         # $feature{'snapshot'}{'default'} = [];
 202         # To have project specific config enable override in $GITWEB_CONFIG
 203         # $feature{'snapshot'}{'override'} = 1;
 204         # and in project config, a comma-separated list of formats or "none"
 205         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 206         'snapshot' => {
 207                 'sub' => \&feature_snapshot,
 208                 'override' => 0,
 209                 'default' => ['tgz']},
 210
 211         # Enable text search, which will list the commits which match author,
 212         # committer or commit text to a given string.  Enabled by default.
 213         # Project specific override is not supported.
 214         'search' => {
 215                 'override' => 0,
 216                 'default' => [1]},
 217
 218         # Enable grep search, which will list the files in currently selected
 219         # tree containing the given string. Enabled by default. This can be
 220         # potentially CPU-intensive, of course.
 221
 222         # To enable system wide have in $GITWEB_CONFIG
 223         # $feature{'grep'}{'default'} = [1];
 224         # To have project specific config enable override in $GITWEB_CONFIG
 225         # $feature{'grep'}{'override'} = 1;
 226         # and in project config gitweb.grep = 0|1;
 227         'grep' => {
 228                 'override' => 0,
 229                 'default' => [1]},
 230
 231         # Enable the pickaxe search, which will list the commits that modified
 232         # a given string in a file. This can be practical and quite faster
 233         # alternative to 'blame', but still potentially CPU-intensive.
 234
 235         # To enable system wide have in $GITWEB_CONFIG
 236         # $feature{'pickaxe'}{'default'} = [1];
 237         # To have project specific config enable override in $GITWEB_CONFIG
 238         # $feature{'pickaxe'}{'override'} = 1;
 239         # and in project config gitweb.pickaxe = 0|1;
 240         'pickaxe' => {
 241                 'sub' => \&feature_pickaxe,
 242                 'override' => 0,
 243                 'default' => [1]},
 244
 245         # Make gitweb use an alternative format of the URLs which can be
 246         # more readable and natural-looking: project name is embedded
 247         # directly in the path and the query string contains other
 248         # auxiliary information. All gitweb installations recognize
 249         # URL in either format; this configures in which formats gitweb
 250         # generates links.
 251
 252         # To enable system wide have in $GITWEB_CONFIG
 253         # $feature{'pathinfo'}{'default'} = [1];
 254         # Project specific override is not supported.
 255
 256         # Note that you will need to change the default location of CSS,
 257         # favicon, logo and possibly other files to an absolute URL. Also,
 258         # if gitweb.cgi serves as your indexfile, you will need to force
 259         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 260         'pathinfo' => {
 261                 'override' => 0,
 262                 'default' => [0]},
 263
 264         # Make gitweb consider projects in project root subdirectories
 265         # to be forks of existing projects. Given project $projname.git,
 266         # projects matching $projname/*.git will not be shown in the main
 267         # projects list, instead a '+' mark will be added to $projname
 268         # there and a 'forks' view will be enabled for the project, listing
 269         # all the forks. If project list is taken from a file, forks have
 270         # to be listed after the main project.
 271
 272         # To enable system wide have in $GITWEB_CONFIG
 273         # $feature{'forks'}{'default'} = [1];
 274         # Project specific override is not supported.
 275         'forks' => {
 276                 'override' => 0,
 277                 'default' => [0]},
 278 );
 279
 280 sub gitweb_check_feature {
 281         my ($name) = @_;
 282         return unless exists $feature{$name};
 283         my ($sub, $override, @defaults) = (
 284                 $feature{$name}{'sub'},
 285                 $feature{$name}{'override'},
 286                 @{$feature{$name}{'default'}});
 287         if (!$override) { return @defaults; }
 288         if (!defined $sub) {
 289                 warn "feature $name is not overrideable";
 290                 return @defaults;
 291         }
 292         return $sub->(@defaults);
 293 }
 294
 295 sub feature_blame {
 296         my ($val) = git_get_project_config('blame', '--bool');
 297
 298         if ($val eq 'true') {
 299                 return 1;
 300         } elsif ($val eq 'false') {
 301                 return 0;
 302         }
 303
 304         return $_[0];
 305 }
 306
 307 sub feature_snapshot {
 308         my (@fmts) = @_;
 309
 310         my ($val) = git_get_project_config('snapshot');
 311
 312         if ($val) {
 313                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 314         }
 315
 316         return @fmts;
 317 }
 318
 319 sub feature_grep {
 320         my ($val) = git_get_project_config('grep', '--bool');
 321
 322         if ($val eq 'true') {
 323                 return (1);
 324         } elsif ($val eq 'false') {
 325                 return (0);
 326         }
 327
 328         return ($_[0]);
 329 }
 330
 331 sub feature_pickaxe {
 332         my ($val) = git_get_project_config('pickaxe', '--bool');
 333
 334         if ($val eq 'true') {
 335                 return (1);
 336         } elsif ($val eq 'false') {
 337                 return (0);
 338         }
 339
 340         return ($_[0]);
 341 }
 342
 343 # checking HEAD file with -e is fragile if the repository was
 344 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 345 # and then pruned.
 346 sub check_head_link {
 347         my ($dir) = @_;
 348         my $headfile = "$dir/HEAD";
 349         return ((-e $headfile) ||
 350                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 351 }
 352
 353 sub check_export_ok {
 354         my ($dir) = @_;
 355         return (check_head_link($dir) &&
 356                 (!$export_ok || -e "$dir/$export_ok"));
 357 }
 358
 359 # process alternate names for backward compatibility
 360 # filter out unsupported (unknown) snapshot formats
 361 sub filter_snapshot_fmts {
 362         my @fmts = @_;
 363
 364         @fmts = map {
 365                 exists $known_snapshot_format_aliases{$_} ?
 366                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 367         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 368
 369 }
 370
 371 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 372 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 373
 374 # version of the core git binary
 375 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 376
 377 $projects_list ||= $projectroot;
 378
 379 # ======================================================================
 380 # input validation and dispatch
 381 our $action = $cgi->param('a');
 382 if (defined $action) {
 383         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 384                 die_error(undef, "Invalid action parameter");
 385         }
 386 }
 387
 388 # parameters which are pathnames
 389 our $project = $cgi->param('p');
 390 if (defined $project) {
 391         if (!validate_pathname($project) ||
 392             !(-d "$projectroot/$project") ||
 393             !check_head_link("$projectroot/$project") ||
 394             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 395             ($strict_export && !project_in_list($project))) {
 396                 undef $project;
 397                 die_error(undef, "No such project");
 398         }
 399 }
 400
 401 our $file_name = $cgi->param('f');
 402 if (defined $file_name) {
 403         if (!validate_pathname($file_name)) {
 404                 die_error(undef, "Invalid file parameter");
 405         }
 406 }
 407
 408 our $file_parent = $cgi->param('fp');
 409 if (defined $file_parent) {
 410         if (!validate_pathname($file_parent)) {
 411                 die_error(undef, "Invalid file parent parameter");
 412         }
 413 }
 414
 415 # parameters which are refnames
 416 our $hash = $cgi->param('h');
 417 if (defined $hash) {
 418         if (!validate_refname($hash)) {
 419                 die_error(undef, "Invalid hash parameter");
 420         }
 421 }
 422
 423 our $hash_parent = $cgi->param('hp');
 424 if (defined $hash_parent) {
 425         if (!validate_refname($hash_parent)) {
 426                 die_error(undef, "Invalid hash parent parameter");
 427         }
 428 }
 429
 430 our $hash_base = $cgi->param('hb');
 431 if (defined $hash_base) {
 432         if (!validate_refname($hash_base)) {
 433                 die_error(undef, "Invalid hash base parameter");
 434         }
 435 }
 436
 437 my %allowed_options = (
 438         "--no-merges" => [ qw(rss atom log shortlog history) ],
 439 );
 440
 441 our @extra_options = $cgi->param('opt');
 442 if (defined @extra_options) {
 443         foreach my $opt (@extra_options) {
 444                 if (not exists $allowed_options{$opt}) {
 445                         die_error(undef, "Invalid option parameter");
 446                 }
 447                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 448                         die_error(undef, "Invalid option parameter for this action");
 449                 }
 450         }
 451 }
 452
 453 our $hash_parent_base = $cgi->param('hpb');
 454 if (defined $hash_parent_base) {
 455         if (!validate_refname($hash_parent_base)) {
 456                 die_error(undef, "Invalid hash parent base parameter");
 457         }
 458 }
 459
 460 # other parameters
 461 our $page = $cgi->param('pg');
 462 if (defined $page) {
 463         if ($page =~ m/[^0-9]/) {
 464                 die_error(undef, "Invalid page parameter");
 465         }
 466 }
 467
 468 our $searchtype = $cgi->param('st');
 469 if (defined $searchtype) {
 470         if ($searchtype =~ m/[^a-z]/) {
 471                 die_error(undef, "Invalid searchtype parameter");
 472         }
 473 }
 474
 475 our $searchtext = $cgi->param('s');
 476 our $search_regexp;
 477 if (defined $searchtext) {
 478         if (length($searchtext) < 2) {
 479                 die_error(undef, "At least two characters are required for search parameter");
 480         }
 481         $search_regexp = quotemeta $searchtext;
 482 }
 483
 484 # now read PATH_INFO and use it as alternative to parameters
 485 sub evaluate_path_info {
 486         return if defined $project;
 487         my $path_info = $ENV{"PATH_INFO"};
 488         return if !$path_info;
 489         $path_info =~ s,^/+,,;
 490         return if !$path_info;
 491         # find which part of PATH_INFO is project
 492         $project = $path_info;
 493         $project =~ s,/+$,,;
 494         while ($project && !check_head_link("$projectroot/$project")) {
 495                 $project =~ s,/*[^/]*$,,;
 496         }
 497         # validate project
 498         $project = validate_pathname($project);
 499         if (!$project ||
 500             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 501             ($strict_export && !project_in_list($project))) {
 502                 undef $project;
 503                 return;
 504         }
 505         # do not change any parameters if an action is given using the query string
 506         return if $action;
 507         $path_info =~ s,^$project/*,,;
 508         my ($refname, $pathname) = split(/:/, $path_info, 2);
 509         if (defined $pathname) {
 510                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 511                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 512                 $pathname =~ s,^/+,,;
 513                 if (!$pathname || substr($pathname, -1) eq "/") {
 514                         $action  ||= "tree";
 515                         $pathname =~ s,/$,,;
 516                 } else {
 517                         $action  ||= "blob_plain";
 518                 }
 519                 $hash_base ||= validate_refname($refname);
 520                 $file_name ||= validate_pathname($pathname);
 521         } elsif (defined $refname) {
 522                 # we got "project.git/branch"
 523                 $action ||= "shortlog";
 524                 $hash   ||= validate_refname($refname);
 525         }
 526 }
 527 evaluate_path_info();
 528
 529 # path to the current git repository
 530 our $git_dir;
 531 $git_dir = "$projectroot/$project" if $project;
 532
 533 # dispatch
 534 my %actions = (
 535         "blame" => \&git_blame2,
 536         "blobdiff" => \&git_blobdiff,
 537         "blobdiff_plain" => \&git_blobdiff_plain,
 538         "blob" => \&git_blob,
 539         "blob_plain" => \&git_blob_plain,
 540         "commitdiff" => \&git_commitdiff,
 541         "commitdiff_plain" => \&git_commitdiff_plain,
 542         "commit" => \&git_commit,
 543         "forks" => \&git_forks,
 544         "heads" => \&git_heads,
 545         "history" => \&git_history,
 546         "log" => \&git_log,
 547         "rss" => \&git_rss,
 548         "atom" => \&git_atom,
 549         "search" => \&git_search,
 550         "search_help" => \&git_search_help,
 551         "shortlog" => \&git_shortlog,
 552         "summary" => \&git_summary,
 553         "tag" => \&git_tag,
 554         "tags" => \&git_tags,
 555         "tree" => \&git_tree,
 556         "snapshot" => \&git_snapshot,
 557         "object" => \&git_object,
 558         # those below don't need $project
 559         "opml" => \&git_opml,
 560         "project_list" => \&git_project_list,
 561         "project_index" => \&git_project_index,
 562 );
 563
 564 if (!defined $action) {
 565         if (defined $hash) {
 566                 $action = git_get_type($hash);
 567         } elsif (defined $hash_base && defined $file_name) {
 568                 $action = git_get_type("$hash_base:$file_name");
 569         } elsif (defined $project) {
 570                 $action = 'summary';
 571         } else {
 572                 $action = 'project_list';
 573         }
 574 }
 575 if (!defined($actions{$action})) {
 576         die_error(undef, "Unknown action");
 577 }
 578 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 579     !$project) {
 580         die_error(undef, "Project needed");
 581 }
 582 $actions{$action}->();
 583 exit;
 584
 585 ## ======================================================================
 586 ## action links
 587
 588 sub href(%) {
 589         my %params = @_;
 590         # default is to use -absolute url() i.e. $my_uri
 591         my $href = $params{-full} ? $my_url : $my_uri;
 592
 593         # XXX: Warning: If you touch this, check the search form for updating,
 594         # too.
 595
 596         my @mapping = (
 597                 project => "p",
 598                 action => "a",
 599                 file_name => "f",
 600                 file_parent => "fp",
 601                 hash => "h",
 602                 hash_parent => "hp",
 603                 hash_base => "hb",
 604                 hash_parent_base => "hpb",
 605                 page => "pg",
 606                 order => "o",
 607                 searchtext => "s",
 608                 searchtype => "st",
 609                 snapshot_format => "sf",
 610                 extra_options => "opt",
 611         );
 612         my %mapping = @mapping;
 613
 614         $params{'project'} = $project unless exists $params{'project'};
 615
 616         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 617         if ($use_pathinfo) {
 618                 # use PATH_INFO for project name
 619                 $href .= "/$params{'project'}" if defined $params{'project'};
 620                 delete $params{'project'};
 621
 622                 # Summary just uses the project path URL
 623                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 624                         delete $params{'action'};
 625                 }
 626         }
 627
 628         # now encode the parameters explicitly
 629         my @result = ();
 630         for (my $i = 0; $i < @mapping; $i += 2) {
 631                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 632                 if (defined $params{$name}) {
 633                         if (ref($params{$name}) eq "ARRAY") {
 634                                 foreach my $par (@{$params{$name}}) {
 635                                         push @result, $symbol . "=" . esc_param($par);
 636                                 }
 637                         } else {
 638                                 push @result, $symbol . "=" . esc_param($params{$name});
 639                         }
 640                 }
 641         }
 642         $href .= "?" . join(';', @result) if scalar @result;
 643
 644         return $href;
 645 }
 646
 647
 648 ## ======================================================================
 649 ## validation, quoting/unquoting and escaping
 650
 651 sub validate_pathname {
 652         my $input = shift || return undef;
 653
 654         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 655         # at the beginning, at the end, and between slashes.
 656         # also this catches doubled slashes
 657         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 658                 return undef;
 659         }
 660         # no null characters
 661         if ($input =~ m!\0!) {
 662                 return undef;
 663         }
 664         return $input;
 665 }
 666
 667 sub validate_refname {
 668         my $input = shift || return undef;
 669
 670         # textual hashes are O.K.
 671         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 672                 return $input;
 673         }
 674         # it must be correct pathname
 675         $input = validate_pathname($input)
 676                 or return undef;
 677         # restrictions on ref name according to git-check-ref-format
 678         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 679                 return undef;
 680         }
 681         return $input;
 682 }
 683
 684 # decode sequences of octets in utf8 into Perl's internal form,
 685 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 686 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 687 sub to_utf8 {
 688         my $str = shift;
 689         my $res;
 690         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 691         if (defined $res) {
 692                 return $res;
 693         } else {
 694                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 695         }
 696 }
 697
 698 # quote unsafe chars, but keep the slash, even when it's not
 699 # correct, but quoted slashes look too horrible in bookmarks
 700 sub esc_param {
 701         my $str = shift;
 702         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 703         $str =~ s/\+/%2B/g;
 704         $str =~ s/ /\+/g;
 705         return $str;
 706 }
 707
 708 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 709 sub esc_url {
 710         my $str = shift;
 711         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 712         $str =~ s/\+/%2B/g;
 713         $str =~ s/ /\+/g;
 714         return $str;
 715 }
 716
 717 # replace invalid utf8 character with SUBSTITUTION sequence
 718 sub esc_html ($;%) {
 719         my $str = shift;
 720         my %opts = @_;
 721
 722         $str = to_utf8($str);
 723         $str = $cgi->escapeHTML($str);
 724         if ($opts{'-nbsp'}) {
 725                 $str =~ s/ /&nbsp;/g;
 726         }
 727         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 728         return $str;
 729 }
 730
 731 # quote control characters and escape filename to HTML
 732 sub esc_path {
 733         my $str = shift;
 734         my %opts = @_;
 735
 736         $str = to_utf8($str);
 737         $str = $cgi->escapeHTML($str);
 738         if ($opts{'-nbsp'}) {
 739                 $str =~ s/ /&nbsp;/g;
 740         }
 741         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 742         return $str;
 743 }
 744
 745 # Make control characters "printable", using character escape codes (CEC)
 746 sub quot_cec {
 747         my $cntrl = shift;
 748         my %es = ( # character escape codes, aka escape sequences
 749                    "\t" => '\t',   # tab            (HT)
 750                    "\n" => '\n',   # line feed      (LF)
 751                    "\r" => '\r',   # carrige return (CR)
 752                    "\f" => '\f',   # form feed      (FF)
 753                    "\b" => '\b',   # backspace      (BS)
 754                    "\a" => '\a',   # alarm (bell)   (BEL)
 755                    "\e" => '\e',   # escape         (ESC)
 756                    "\013" => '\v', # vertical tab   (VT)
 757                    "\000" => '\0', # nul character  (NUL)
 758                    );
 759         my $chr = ( (exists $es{$cntrl})
 760                     ? $es{$cntrl}
 761                     : sprintf('\%03o', ord($cntrl)) );
 762         return "<span class=\"cntrl\">$chr</span>";
 763 }
 764
 765 # Alternatively use unicode control pictures codepoints,
 766 # Unicode "printable representation" (PR)
 767 sub quot_upr {
 768         my $cntrl = shift;
 769         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 770         return "<span class=\"cntrl\">$chr</span>";
 771 }
 772
 773 # git may return quoted and escaped filenames
 774 sub unquote {
 775         my $str = shift;
 776
 777         sub unq {
 778                 my $seq = shift;
 779                 my %es = ( # character escape codes, aka escape sequences
 780                         't' => "\t",   # tab            (HT, TAB)
 781                         'n' => "\n",   # newline        (NL)
 782                         'r' => "\r",   # return         (CR)
 783                         'f' => "\f",   # form feed      (FF)
 784                         'b' => "\b",   # backspace      (BS)
 785                         'a' => "\a",   # alarm (bell)   (BEL)
 786                         'e' => "\e",   # escape         (ESC)
 787                         'v' => "\013", # vertical tab   (VT)
 788                 );
 789
 790                 if ($seq =~ m/^[0-7]{1,3}$/) {
 791                         # octal char sequence
 792                         return chr(oct($seq));
 793                 } elsif (exists $es{$seq}) {
 794                         # C escape sequence, aka character escape code
 795                         return $es{$seq}
 796                 }
 797                 # quoted ordinary character
 798                 return $seq;
 799         }
 800
 801         if ($str =~ m/^"(.*)"$/) {
 802                 # needs unquoting
 803                 $str = $1;
 804                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 805         }
 806         return $str;
 807 }
 808
 809 # escape tabs (convert tabs to spaces)
 810 sub untabify {
 811         my $line = shift;
 812
 813         while ((my $pos = index($line, "\t")) != -1) {
 814                 if (my $count = (8 - ($pos % 8))) {
 815                         my $spaces = ' ' x $count;
 816                         $line =~ s/\t/$spaces/;
 817                 }
 818         }
 819
 820         return $line;
 821 }
 822
 823 sub project_in_list {
 824         my $project = shift;
 825         my @list = git_get_projects_list();
 826         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 827 }
 828
 829 ## ----------------------------------------------------------------------
 830 ## HTML aware string manipulation
 831
 832 sub chop_str {
 833         my $str = shift;
 834         my $len = shift;
 835         my $add_len = shift || 10;
 836
 837         # allow only $len chars, but don't cut a word if it would fit in $add_len
 838         # if it doesn't fit, cut it if it's still longer than the dots we would add
 839         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 840         my $body = $1;
 841         my $tail = $2;
 842         if (length($tail) > 4) {
 843                 $tail = " ...";
 844                 $body =~ s/&[^;]*$//; # remove chopped character entities
 845         }
 846         return "$body$tail";
 847 }
 848
 849 ## ----------------------------------------------------------------------
 850 ## functions returning short strings
 851
 852 # CSS class for given age value (in seconds)
 853 sub age_class {
 854         my $age = shift;
 855
 856         if (!defined $age) {
 857                 return "noage";
 858         } elsif ($age < 60*60*2) {
 859                 return "age0";
 860         } elsif ($age < 60*60*24*2) {
 861                 return "age1";
 862         } else {
 863                 return "age2";
 864         }
 865 }
 866
 867 # convert age in seconds to "nn units ago" string
 868 sub age_string {
 869         my $age = shift;
 870         my $age_str;
 871
 872         if ($age > 60*60*24*365*2) {
 873                 $age_str = (int $age/60/60/24/365);
 874                 $age_str .= " years ago";
 875         } elsif ($age > 60*60*24*(365/12)*2) {
 876                 $age_str = int $age/60/60/24/(365/12);
 877                 $age_str .= " months ago";
 878         } elsif ($age > 60*60*24*7*2) {
 879                 $age_str = int $age/60/60/24/7;
 880                 $age_str .= " weeks ago";
 881         } elsif ($age > 60*60*24*2) {
 882                 $age_str = int $age/60/60/24;
 883                 $age_str .= " days ago";
 884         } elsif ($age > 60*60*2) {
 885                 $age_str = int $age/60/60;
 886                 $age_str .= " hours ago";
 887         } elsif ($age > 60*2) {
 888                 $age_str = int $age/60;
 889                 $age_str .= " min ago";
 890         } elsif ($age > 2) {
 891                 $age_str = int $age;
 892                 $age_str .= " sec ago";
 893         } else {
 894                 $age_str .= " right now";
 895         }
 896         return $age_str;
 897 }
 898
 899 use constant {
 900         S_IFINVALID => 0030000,
 901         S_IFGITLINK => 0160000,
 902 };
 903
 904 # submodule/subproject, a commit object reference
 905 sub S_ISGITLINK($) {
 906         my $mode = shift;
 907
 908         return (($mode & S_IFMT) == S_IFGITLINK)
 909 }
 910
 911 # convert file mode in octal to symbolic file mode string
 912 sub mode_str {
 913         my $mode = oct shift;
 914
 915         if (S_ISGITLINK($mode)) {
 916                 return 'm---------';
 917         } elsif (S_ISDIR($mode & S_IFMT)) {
 918                 return 'drwxr-xr-x';
 919         } elsif (S_ISLNK($mode)) {
 920                 return 'lrwxrwxrwx';
 921         } elsif (S_ISREG($mode)) {
 922                 # git cares only about the executable bit
 923                 if ($mode & S_IXUSR) {
 924                         return '-rwxr-xr-x';
 925                 } else {
 926                         return '-rw-r--r--';
 927                 };
 928         } else {
 929                 return '----------';
 930         }
 931 }
 932
 933 # convert file mode in octal to file type string
 934 sub file_type {
 935         my $mode = shift;
 936
 937         if ($mode !~ m/^[0-7]+$/) {
 938                 return $mode;
 939         } else {
 940                 $mode = oct $mode;
 941         }
 942
 943         if (S_ISGITLINK($mode)) {
 944                 return "submodule";
 945         } elsif (S_ISDIR($mode & S_IFMT)) {
 946                 return "directory";
 947         } elsif (S_ISLNK($mode)) {
 948                 return "symlink";
 949         } elsif (S_ISREG($mode)) {
 950                 return "file";
 951         } else {
 952                 return "unknown";
 953         }
 954 }
 955
 956 # convert file mode in octal to file type description string
 957 sub file_type_long {
 958         my $mode = shift;
 959
 960         if ($mode !~ m/^[0-7]+$/) {
 961                 return $mode;
 962         } else {
 963                 $mode = oct $mode;
 964         }
 965
 966         if (S_ISGITLINK($mode)) {
 967                 return "submodule";
 968         } elsif (S_ISDIR($mode & S_IFMT)) {
 969                 return "directory";
 970         } elsif (S_ISLNK($mode)) {
 971                 return "symlink";
 972         } elsif (S_ISREG($mode)) {
 973                 if ($mode & S_IXUSR) {
 974                         return "executable";
 975                 } else {
 976                         return "file";
 977                 };
 978         } else {
 979                 return "unknown";
 980         }
 981 }
 982
 983
 984 ## ----------------------------------------------------------------------
 985 ## functions returning short HTML fragments, or transforming HTML fragments
 986 ## which don't belong to other sections
 987
 988 # format line of commit message.
 989 sub format_log_line_html {
 990         my $line = shift;
 991
 992         $line = esc_html($line, -nbsp=>1);
 993         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 994                 my $hash_text = $1;
 995                 my $link =
 996                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 997                                 -class => "text"}, $hash_text);
 998                 $line =~ s/$hash_text/$link/;
 999         }
1000         return $line;
1001 }
1002
1003 # format marker of refs pointing to given object
1004 sub format_ref_marker {
1005         my ($refs, $id) = @_;
1006         my $markers = '';
1007
1008         if (defined $refs->{$id}) {
1009                 foreach my $ref (@{$refs->{$id}}) {
1010                         my ($type, $name) = qw();
1011                         # e.g. tags/v2.6.11 or heads/next
1012                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1013                                 $type = $1;
1014                                 $name = $2;
1015                         } else {
1016                                 $type = "ref";
1017                                 $name = $ref;
1018                         }
1019
1020                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
1021                                     esc_html($name) . "</span>";
1022                 }
1023         }
1024
1025         if ($markers) {
1026                 return ' <span class="refs">'. $markers . '</span>';
1027         } else {
1028                 return "";
1029         }
1030 }
1031
1032 # format, perhaps shortened and with markers, title line
1033 sub format_subject_html {
1034         my ($long, $short, $href, $extra) = @_;
1035         $extra = '' unless defined($extra);
1036
1037         if (length($short) < length($long)) {
1038                 return $cgi->a({-href => $href, -class => "list subject",
1039                                 -title => to_utf8($long)},
1040                        esc_html($short) . $extra);
1041         } else {
1042                 return $cgi->a({-href => $href, -class => "list subject"},
1043                        esc_html($long)  . $extra);
1044         }
1045 }
1046
1047 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1048 sub format_git_diff_header_line {
1049         my $line = shift;
1050         my $diffinfo = shift;
1051         my ($from, $to) = @_;
1052
1053         if ($diffinfo->{'nparents'}) {
1054                 # combined diff
1055                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1056                 if ($to->{'href'}) {
1057                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1058                                          esc_path($to->{'file'}));
1059                 } else { # file was deleted (no href)
1060                         $line .= esc_path($to->{'file'});
1061                 }
1062         } else {
1063                 # "ordinary" diff
1064                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1065                 if ($from->{'href'}) {
1066                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1067                                          'a/' . esc_path($from->{'file'}));
1068                 } else { # file was added (no href)
1069                         $line .= 'a/' . esc_path($from->{'file'});
1070                 }
1071                 $line .= ' ';
1072                 if ($to->{'href'}) {
1073                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1074                                          'b/' . esc_path($to->{'file'}));
1075                 } else { # file was deleted
1076                         $line .= 'b/' . esc_path($to->{'file'});
1077                 }
1078         }
1079
1080         return "<div class=\"diff header\">$line</div>\n";
1081 }
1082
1083 # format extended diff header line, before patch itself
1084 sub format_extended_diff_header_line {
1085         my $line = shift;
1086         my $diffinfo = shift;
1087         my ($from, $to) = @_;
1088
1089         # match <path>
1090         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1091                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1092                                        esc_path($from->{'file'}));
1093         }
1094         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1095                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1096                                  esc_path($to->{'file'}));
1097         }
1098         # match single <mode>
1099         if ($line =~ m/\s(\d{6})$/) {
1100                 $line .= '<span class="info"> (' .
1101                          file_type_long($1) .
1102                          ')</span>';
1103         }
1104         # match <hash>
1105         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1106                 # can match only for combined diff
1107                 $line = 'index ';
1108                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1109                         if ($from->{'href'}[$i]) {
1110                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1111                                                   -class=>"hash"},
1112                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1113                         } else {
1114                                 $line .= '0' x 7;
1115                         }
1116                         # separator
1117                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1118                 }
1119                 $line .= '..';
1120                 if ($to->{'href'}) {
1121                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1122                                          substr($diffinfo->{'to_id'},0,7));
1123                 } else {
1124                         $line .= '0' x 7;
1125                 }
1126
1127         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1128                 # can match only for ordinary diff
1129                 my ($from_link, $to_link);
1130                 if ($from->{'href'}) {
1131                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1132                                              substr($diffinfo->{'from_id'},0,7));
1133                 } else {
1134                         $from_link = '0' x 7;
1135                 }
1136                 if ($to->{'href'}) {
1137                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1138                                            substr($diffinfo->{'to_id'},0,7));
1139                 } else {
1140                         $to_link = '0' x 7;
1141                 }
1142                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1143                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1144         }
1145
1146         return $line . "<br/>\n";
1147 }
1148
1149 # format from-file/to-file diff header
1150 sub format_diff_from_to_header {
1151         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1152         my $line;
1153         my $result = '';
1154
1155         $line = $from_line;
1156         #assert($line =~ m/^---/) if DEBUG;
1157         # no extra formatting for "^--- /dev/null"
1158         if (! $diffinfo->{'nparents'}) {
1159                 # ordinary (single parent) diff
1160                 if ($line =~ m!^--- "?a/!) {
1161                         if ($from->{'href'}) {
1162                                 $line = '--- a/' .
1163                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1164                                                 esc_path($from->{'file'}));
1165                         } else {
1166                                 $line = '--- a/' .
1167                                         esc_path($from->{'file'});
1168                         }
1169                 }
1170                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1171
1172         } else {
1173                 # combined diff (merge commit)
1174                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1175                         if ($from->{'href'}[$i]) {
1176                                 $line = '--- ' .
1177                                         $cgi->a({-href=>href(action=>"blobdiff",
1178                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1179                                                              hash_parent_base=>$parents[$i],
1180                                                              file_parent=>$from->{'file'}[$i],
1181                                                              hash=>$diffinfo->{'to_id'},
1182                                                              hash_base=>$hash,
1183                                                              file_name=>$to->{'file'}),
1184                                                  -class=>"path",
1185                                                  -title=>"diff" . ($i+1)},
1186                                                 $i+1) .
1187                                         '/' .
1188                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1189                                                 esc_path($from->{'file'}[$i]));
1190                         } else {
1191                                 $line = '--- /dev/null';
1192                         }
1193                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1194                 }
1195         }
1196
1197         $line = $to_line;
1198         #assert($line =~ m/^\+\+\+/) if DEBUG;
1199         # no extra formatting for "^+++ /dev/null"
1200         if ($line =~ m!^\+\+\+ "?b/!) {
1201                 if ($to->{'href'}) {
1202                         $line = '+++ b/' .
1203                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1204                                         esc_path($to->{'file'}));
1205                 } else {
1206                         $line = '+++ b/' .
1207                                 esc_path($to->{'file'});
1208                 }
1209         }
1210         $result .= qq!<div class="diff to_file">$line</div>\n!;
1211
1212         return $result;
1213 }
1214
1215 # create note for patch simplified by combined diff
1216 sub format_diff_cc_simplified {
1217         my ($diffinfo, @parents) = @_;
1218         my $result = '';
1219
1220         $result .= "<div class=\"diff header\">" .
1221                    "diff --cc ";
1222         if (!is_deleted($diffinfo)) {
1223                 $result .= $cgi->a({-href => href(action=>"blob",
1224                                                   hash_base=>$hash,
1225                                                   hash=>$diffinfo->{'to_id'},
1226                                                   file_name=>$diffinfo->{'to_file'}),
1227                                     -class => "path"},
1228                                    esc_path($diffinfo->{'to_file'}));
1229         } else {
1230                 $result .= esc_path($diffinfo->{'to_file'});
1231         }
1232         $result .= "</div>\n" . # class="diff header"
1233                    "<div class=\"diff nodifferences\">" .
1234                    "Simple merge" .
1235                    "</div>\n"; # class="diff nodifferences"
1236
1237         return $result;
1238 }
1239
1240 # format patch (diff) line (not to be used for diff headers)
1241 sub format_diff_line {
1242         my $line = shift;
1243         my ($from, $to) = @_;
1244         my $diff_class = "";
1245
1246         chomp $line;
1247
1248         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1249                 # combined diff
1250                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1251                 if ($line =~ m/^\@{3}/) {
1252                         $diff_class = " chunk_header";
1253                 } elsif ($line =~ m/^\\/) {
1254                         $diff_class = " incomplete";
1255                 } elsif ($prefix =~ tr/+/+/) {
1256                         $diff_class = " add";
1257                 } elsif ($prefix =~ tr/-/-/) {
1258                         $diff_class = " rem";
1259                 }
1260         } else {
1261                 # assume ordinary diff
1262                 my $char = substr($line, 0, 1);
1263                 if ($char eq '+') {
1264                         $diff_class = " add";
1265                 } elsif ($char eq '-') {
1266                         $diff_class = " rem";
1267                 } elsif ($char eq '@') {
1268                         $diff_class = " chunk_header";
1269                 } elsif ($char eq "\\") {
1270                         $diff_class = " incomplete";
1271                 }
1272         }
1273         $line = untabify($line);
1274         if ($from && $to && $line =~ m/^\@{2} /) {
1275                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1276                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1277
1278                 $from_lines = 0 unless defined $from_lines;
1279                 $to_lines   = 0 unless defined $to_lines;
1280
1281                 if ($from->{'href'}) {
1282                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1283                                              -class=>"list"}, $from_text);
1284                 }
1285                 if ($to->{'href'}) {
1286                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1287                                              -class=>"list"}, $to_text);
1288                 }
1289                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1290                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1291                 return "<div class=\"diff$diff_class\">$line</div>\n";
1292         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1293                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1294                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1295
1296                 @from_text = split(' ', $ranges);
1297                 for (my $i = 0; $i < @from_text; ++$i) {
1298                         ($from_start[$i], $from_nlines[$i]) =
1299                                 (split(',', substr($from_text[$i], 1)), 0);
1300                 }
1301
1302                 $to_text   = pop @from_text;
1303                 $to_start  = pop @from_start;
1304                 $to_nlines = pop @from_nlines;
1305
1306                 $line = "<span class=\"chunk_info\">$prefix ";
1307                 for (my $i = 0; $i < @from_text; ++$i) {
1308                         if ($from->{'href'}[$i]) {
1309                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1310                                                   -class=>"list"}, $from_text[$i]);
1311                         } else {
1312                                 $line .= $from_text[$i];
1313                         }
1314                         $line .= " ";
1315                 }
1316                 if ($to->{'href'}) {
1317                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1318                                           -class=>"list"}, $to_text);
1319                 } else {
1320                         $line .= $to_text;
1321                 }
1322                 $line .= " $prefix</span>" .
1323                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1324                 return "<div class=\"diff$diff_class\">$line</div>\n";
1325         }
1326         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1327 }
1328
1329 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1330 # linked.  Pass the hash of the tree/commit to snapshot.
1331 sub format_snapshot_links {
1332         my ($hash) = @_;
1333         my @snapshot_fmts = gitweb_check_feature('snapshot');
1334         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1335         my $num_fmts = @snapshot_fmts;
1336         if ($num_fmts > 1) {
1337                 # A parenthesized list of links bearing format names.
1338                 # e.g. "snapshot (_tar.gz_ _zip_)"
1339                 return "snapshot (" . join(' ', map
1340                         $cgi->a({
1341                                 -href => href(
1342                                         action=>"snapshot",
1343                                         hash=>$hash,
1344                                         snapshot_format=>$_
1345                                 )
1346                         }, $known_snapshot_formats{$_}{'display'})
1347                 , @snapshot_fmts) . ")";
1348         } elsif ($num_fmts == 1) {
1349                 # A single "snapshot" link whose tooltip bears the format name.
1350                 # i.e. "_snapshot_"
1351                 my ($fmt) = @snapshot_fmts;
1352                 return
1353                         $cgi->a({
1354                                 -href => href(
1355                                         action=>"snapshot",
1356                                         hash=>$hash,
1357                                         snapshot_format=>$fmt
1358                                 ),
1359                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1360                         }, "snapshot");
1361         } else { # $num_fmts == 0
1362                 return undef;
1363         }
1364 }
1365
1366 ## ----------------------------------------------------------------------
1367 ## git utility subroutines, invoking git commands
1368
1369 # returns path to the core git executable and the --git-dir parameter as list
1370 sub git_cmd {
1371         return $GIT, '--git-dir='.$git_dir;
1372 }
1373
1374 # returns path to the core git executable and the --git-dir parameter as string
1375 sub git_cmd_str {
1376         return join(' ', git_cmd());
1377 }
1378
1379 # get HEAD ref of given project as hash
1380 sub git_get_head_hash {
1381         my $project = shift;
1382         my $o_git_dir = $git_dir;
1383         my $retval = undef;
1384         $git_dir = "$projectroot/$project";
1385         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1386                 my $head = <$fd>;
1387                 close $fd;
1388                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1389                         $retval = $1;
1390                 }
1391         }
1392         if (defined $o_git_dir) {
1393                 $git_dir = $o_git_dir;
1394         }
1395         return $retval;
1396 }
1397
1398 # get type of given object
1399 sub git_get_type {
1400         my $hash = shift;
1401
1402         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1403         my $type = <$fd>;
1404         close $fd or return;
1405         chomp $type;
1406         return $type;
1407 }
1408
1409 sub git_get_project_config {
1410         my ($key, $type) = @_;
1411
1412         return unless ($key);
1413         $key =~ s/^gitweb\.//;
1414         return if ($key =~ m/\W/);
1415
1416         my @x = (git_cmd(), 'config');
1417         if (defined $type) { push @x, $type; }
1418         push @x, "--get";
1419         push @x, "gitweb.$key";
1420         my $val = qx(@x);
1421         chomp $val;
1422         return ($val);
1423 }
1424
1425 # get hash of given path at given ref
1426 sub git_get_hash_by_path {
1427         my $base = shift;
1428         my $path = shift || return undef;
1429         my $type = shift;
1430
1431         $path =~ s,/+$,,;
1432
1433         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1434                 or die_error(undef, "Open git-ls-tree failed");
1435         my $line = <$fd>;
1436         close $fd or return undef;
1437
1438         if (!defined $line) {
1439                 # there is no tree or hash given by $path at $base
1440                 return undef;
1441         }
1442
1443         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1444         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1445         if (defined $type && $type ne $2) {
1446                 # type doesn't match
1447                 return undef;
1448         }
1449         return $3;
1450 }
1451
1452 # get path of entry with given hash at given tree-ish (ref)
1453 # used to get 'from' filename for combined diff (merge commit) for renames
1454 sub git_get_path_by_hash {
1455         my $base = shift || return;
1456         my $hash = shift || return;
1457
1458         local $/ = "\0";
1459
1460         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1461                 or return undef;
1462         while (my $line = <$fd>) {
1463                 chomp $line;
1464
1465                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1466                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1467                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1468                         close $fd;
1469                         return $1;
1470                 }
1471         }
1472         close $fd;
1473         return undef;
1474 }
1475
1476 ## ......................................................................
1477 ## git utility functions, directly accessing git repository
1478
1479 sub git_get_project_description {
1480         my $path = shift;
1481
1482         open my $fd, "$projectroot/$path/description" or return undef;
1483         my $descr = <$fd>;
1484         close $fd;
1485         if (defined $descr) {
1486                 chomp $descr;
1487         }
1488         return $descr;
1489 }
1490
1491 sub git_get_project_url_list {
1492         my $path = shift;
1493
1494         open my $fd, "$projectroot/$path/cloneurl" or return;
1495         my @git_project_url_list = map { chomp; $_ } <$fd>;
1496         close $fd;
1497
1498         return wantarray ? @git_project_url_list : \@git_project_url_list;
1499 }
1500
1501 sub git_get_projects_list {
1502         my ($filter) = @_;
1503         my @list;
1504
1505         $filter ||= '';
1506         $filter =~ s/\.git$//;
1507
1508         my ($check_forks) = gitweb_check_feature('forks');
1509
1510         if (-d $projects_list) {
1511                 # search in directory
1512                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1513                 # remove the trailing "/"
1514                 $dir =~ s!/+$!!;
1515                 my $pfxlen = length("$dir");
1516                 my $pfxdepth = ($dir =~ tr!/!!);
1517
1518                 File::Find::find({
1519                         follow_fast => 1, # follow symbolic links
1520                         follow_skip => 2, # ignore duplicates
1521                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1522                         wanted => sub {
1523                                 # global variables
1524                                 our $project_maxdepth;
1525                                 our $projectroot;
1526                                 # skip project-list toplevel, if we get it.
1527                                 return if (m!^[/.]$!);
1528                                 # only directories can be git repositories
1529                                 return unless (-d $_);
1530                                 # don't traverse too deep (Find is super slow on os x)
1531                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1532                                         $File::Find::prune = 1;
1533                                         return;
1534                                 }
1535
1536                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1537                                 # we check related file in $projectroot
1538                                 if ($check_forks and $subdir =~ m#/.#) {
1539                                         $File::Find::prune = 1;
1540                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1541                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1542                                         $File::Find::prune = 1;
1543                                 }
1544                         },
1545                 }, "$dir");
1546
1547         } elsif (-f $projects_list) {
1548                 # read from file(url-encoded):
1549                 # 'git%2Fgit.git Linus+Torvalds'
1550                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1551                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1552                 my %paths;
1553                 open my ($fd), $projects_list or return;
1554         PROJECT:
1555                 while (my $line = <$fd>) {
1556                         chomp $line;
1557                         my ($path, $owner) = split ' ', $line;
1558                         $path = unescape($path);
1559                         $owner = unescape($owner);
1560                         if (!defined $path) {
1561                                 next;
1562                         }
1563                         if ($filter ne '') {
1564                                 # looking for forks;
1565                                 my $pfx = substr($path, 0, length($filter));
1566                                 if ($pfx ne $filter) {
1567                                         next PROJECT;
1568                                 }
1569                                 my $sfx = substr($path, length($filter));
1570                                 if ($sfx !~ /^\/.*\.git$/) {
1571                                         next PROJECT;
1572                                 }
1573                         } elsif ($check_forks) {
1574                         PATH:
1575                                 foreach my $filter (keys %paths) {
1576                                         # looking for forks;
1577                                         my $pfx = substr($path, 0, length($filter));
1578                                         if ($pfx ne $filter) {
1579                                                 next PATH;
1580                                         }
1581                                         my $sfx = substr($path, length($filter));
1582                                         if ($sfx !~ /^\/.*\.git$/) {
1583                                                 next PATH;
1584                                         }
1585                                         # is a fork, don't include it in
1586                                         # the list
1587                                         next PROJECT;
1588                                 }
1589                         }
1590                         if (check_export_ok("$projectroot/$path")) {
1591                                 my $pr = {
1592                                         path => $path,
1593                                         owner => to_utf8($owner),
1594                                 };
1595                                 push @list, $pr;
1596                                 (my $forks_path = $path) =~ s/\.git$//;
1597                                 $paths{$forks_path}++;
1598                         }
1599                 }
1600                 close $fd;
1601         }
1602         return @list;
1603 }
1604
1605 our $gitweb_project_owner = undef;
1606 sub git_get_project_list_from_file {
1607
1608         return if (defined $gitweb_project_owner);
1609
1610         $gitweb_project_owner = {};
1611         # read from file (url-encoded):
1612         # 'git%2Fgit.git Linus+Torvalds'
1613         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1614         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1615         if (-f $projects_list) {
1616                 open (my $fd , $projects_list);
1617                 while (my $line = <$fd>) {
1618                         chomp $line;
1619                         my ($pr, $ow) = split ' ', $line;
1620                         $pr = unescape($pr);
1621                         $ow = unescape($ow);
1622                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1623                 }
1624                 close $fd;
1625         }
1626 }
1627
1628 sub git_get_project_owner {
1629         my $project = shift;
1630         my $owner;
1631
1632         return undef unless $project;
1633
1634         if (!defined $gitweb_project_owner) {
1635                 git_get_project_list_from_file();
1636         }
1637
1638         if (exists $gitweb_project_owner->{$project}) {
1639                 $owner = $gitweb_project_owner->{$project};
1640         }
1641         if (!defined $owner) {
1642                 $owner = get_file_owner("$projectroot/$project");
1643         }
1644
1645         return $owner;
1646 }
1647
1648 sub git_get_last_activity {
1649         my ($path) = @_;
1650         my $fd;
1651
1652         $git_dir = "$projectroot/$path";
1653         open($fd, "-|", git_cmd(), 'for-each-ref',
1654              '--format=%(committer)',
1655              '--sort=-committerdate',
1656              '--count=1',
1657              'refs/heads') or return;
1658         my $most_recent = <$fd>;
1659         close $fd or return;
1660         if (defined $most_recent &&
1661             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1662                 my $timestamp = $1;
1663                 my $age = time - $timestamp;
1664                 return ($age, age_string($age));
1665         }
1666         return (undef, undef);
1667 }
1668
1669 sub git_get_references {
1670         my $type = shift || "";
1671         my %refs;
1672         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1673         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1674         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1675                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1676                 or return;
1677
1678         while (my $line = <$fd>) {
1679                 chomp $line;
1680                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1681                         if (defined $refs{$1}) {
1682                                 push @{$refs{$1}}, $2;
1683                         } else {
1684                                 $refs{$1} = [ $2 ];
1685                         }
1686                 }
1687         }
1688         close $fd or return;
1689         return \%refs;
1690 }
1691
1692 sub git_get_rev_name_tags {
1693         my $hash = shift || return undef;
1694
1695         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1696                 or return;
1697         my $name_rev = <$fd>;
1698         close $fd;
1699
1700         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1701                 return $1;
1702         } else {
1703                 # catches also '$hash undefined' output
1704                 return undef;
1705         }
1706 }
1707
1708 ## ----------------------------------------------------------------------
1709 ## parse to hash functions
1710
1711 sub parse_date {
1712         my $epoch = shift;
1713         my $tz = shift || "-0000";
1714
1715         my %date;
1716         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1717         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1718         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1719         $date{'hour'} = $hour;
1720         $date{'minute'} = $min;
1721         $date{'mday'} = $mday;
1722         $date{'day'} = $days[$wday];
1723         $date{'month'} = $months[$mon];
1724         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1725                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1726         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1727                              $mday, $months[$mon], $hour ,$min;
1728         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1729                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1730
1731         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1732         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1733         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1734         $date{'hour_local'} = $hour;
1735         $date{'minute_local'} = $min;
1736         $date{'tz_local'} = $tz;
1737         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1738                                   1900+$year, $mon+1, $mday,
1739                                   $hour, $min, $sec, $tz);
1740         return %date;
1741 }
1742
1743 sub parse_tag {
1744         my $tag_id = shift;
1745         my %tag;
1746         my @comment;
1747
1748         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1749         $tag{'id'} = $tag_id;
1750         while (my $line = <$fd>) {
1751                 chomp $line;
1752                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1753                         $tag{'object'} = $1;
1754                 } elsif ($line =~ m/^type (.+)$/) {
1755                         $tag{'type'} = $1;
1756                 } elsif ($line =~ m/^tag (.+)$/) {
1757                         $tag{'name'} = $1;
1758                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1759                         $tag{'author'} = $1;
1760                         $tag{'epoch'} = $2;
1761                         $tag{'tz'} = $3;
1762                 } elsif ($line =~ m/--BEGIN/) {
1763                         push @comment, $line;
1764                         last;
1765                 } elsif ($line eq "") {
1766                         last;
1767                 }
1768         }
1769         push @comment, <$fd>;
1770         $tag{'comment'} = \@comment;
1771         close $fd or return;
1772         if (!defined $tag{'name'}) {
1773                 return
1774         };
1775         return %tag
1776 }
1777
1778 sub parse_commit_text {
1779         my ($commit_text, $withparents) = @_;
1780         my @commit_lines = split '\n', $commit_text;
1781         my %co;
1782
1783         pop @commit_lines; # Remove '\0'
1784
1785         if (! @commit_lines) {
1786                 return;
1787         }
1788
1789         my $header = shift @commit_lines;
1790         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1791                 return;
1792         }
1793         ($co{'id'}, my @parents) = split ' ', $header;
1794         while (my $line = shift @commit_lines) {
1795                 last if $line eq "\n";
1796                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1797                         $co{'tree'} = $1;
1798                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1799                         push @parents, $1;
1800                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1801                         $co{'author'} = $1;
1802                         $co{'author_epoch'} = $2;
1803                         $co{'author_tz'} = $3;
1804                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1805                                 $co{'author_name'}  = $1;
1806                                 $co{'author_email'} = $2;
1807                         } else {
1808                                 $co{'author_name'} = $co{'author'};
1809                         }
1810                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1811                         $co{'committer'} = $1;
1812                         $co{'committer_epoch'} = $2;
1813                         $co{'committer_tz'} = $3;
1814                         $co{'committer_name'} = $co{'committer'};
1815                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1816                                 $co{'committer_name'}  = $1;
1817                                 $co{'committer_email'} = $2;
1818                         } else {
1819                                 $co{'committer_name'} = $co{'committer'};
1820                         }
1821                 }
1822         }
1823         if (!defined $co{'tree'}) {
1824                 return;
1825         };
1826         $co{'parents'} = \@parents;
1827         $co{'parent'} = $parents[0];
1828
1829         foreach my $title (@commit_lines) {
1830                 $title =~ s/^    //;
1831                 if ($title ne "") {
1832                         $co{'title'} = chop_str($title, 80, 5);
1833                         # remove leading stuff of merges to make the interesting part visible
1834                         if (length($title) > 50) {
1835                                 $title =~ s/^Automatic //;
1836                                 $title =~ s/^merge (of|with) /Merge ... /i;
1837                                 if (length($title) > 50) {
1838                                         $title =~ s/(http|rsync):\/\///;
1839                                 }
1840                                 if (length($title) > 50) {
1841                                         $title =~ s/(master|www|rsync)\.//;
1842                                 }
1843                                 if (length($title) > 50) {
1844                                         $title =~ s/kernel.org:?//;
1845                                 }
1846                                 if (length($title) > 50) {
1847                                         $title =~ s/\/pub\/scm//;
1848                                 }
1849                         }
1850                         $co{'title_short'} = chop_str($title, 50, 5);
1851                         last;
1852                 }
1853         }
1854         if ($co{'title'} eq "") {
1855                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1856         }
1857         # remove added spaces
1858         foreach my $line (@commit_lines) {
1859                 $line =~ s/^    //;
1860         }
1861         $co{'comment'} = \@commit_lines;
1862
1863         my $age = time - $co{'committer_epoch'};
1864         $co{'age'} = $age;
1865         $co{'age_string'} = age_string($age);
1866         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1867         if ($age > 60*60*24*7*2) {
1868                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1869                 $co{'age_string_age'} = $co{'age_string'};
1870         } else {
1871                 $co{'age_string_date'} = $co{'age_string'};
1872                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1873         }
1874         return %co;
1875 }
1876
1877 sub parse_commit {
1878         my ($commit_id) = @_;
1879         my %co;
1880
1881         local $/ = "\0";
1882
1883         open my $fd, "-|", git_cmd(), "rev-list",
1884                 "--parents",
1885                 "--header",
1886                 "--max-count=1",
1887                 $commit_id,
1888                 "--",
1889                 or die_error(undef, "Open git-rev-list failed");
1890         %co = parse_commit_text(<$fd>, 1);
1891         close $fd;
1892
1893         return %co;
1894 }
1895
1896 sub parse_commits {
1897         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1898         my @cos;
1899
1900         $maxcount ||= 1;
1901         $skip ||= 0;
1902
1903         local $/ = "\0";
1904
1905         open my $fd, "-|", git_cmd(), "rev-list",
1906                 "--header",
1907                 ($arg ? ($arg) : ()),
1908                 ("--max-count=" . $maxcount),
1909                 ("--skip=" . $skip),
1910                 @extra_options,
1911                 $commit_id,
1912                 "--",
1913                 ($filename ? ($filename) : ())
1914                 or die_error(undef, "Open git-rev-list failed");
1915         while (my $line = <$fd>) {
1916                 my %co = parse_commit_text($line);
1917                 push @cos, \%co;
1918         }
1919         close $fd;
1920
1921         return wantarray ? @cos : \@cos;
1922 }
1923
1924 # parse ref from ref_file, given by ref_id, with given type
1925 sub parse_ref {
1926         my $ref_file = shift;
1927         my $ref_id = shift;
1928         my $type = shift || git_get_type($ref_id);
1929         my %ref_item;
1930
1931         $ref_item{'type'} = $type;
1932         $ref_item{'id'} = $ref_id;
1933         $ref_item{'epoch'} = 0;
1934         $ref_item{'age'} = "unknown";
1935         if ($type eq "tag") {
1936                 my %tag = parse_tag($ref_id);
1937                 $ref_item{'comment'} = $tag{'comment'};
1938                 if ($tag{'type'} eq "commit") {
1939                         my %co = parse_commit($tag{'object'});
1940                         $ref_item{'epoch'} = $co{'committer_epoch'};
1941                         $ref_item{'age'} = $co{'age_string'};
1942                 } elsif (defined($tag{'epoch'})) {
1943                         my $age = time - $tag{'epoch'};
1944                         $ref_item{'epoch'} = $tag{'epoch'};
1945                         $ref_item{'age'} = age_string($age);
1946                 }
1947                 $ref_item{'reftype'} = $tag{'type'};
1948                 $ref_item{'name'} = $tag{'name'};
1949                 $ref_item{'refid'} = $tag{'object'};
1950         } elsif ($type eq "commit"){
1951                 my %co = parse_commit($ref_id);
1952                 $ref_item{'reftype'} = "commit";
1953                 $ref_item{'name'} = $ref_file;
1954                 $ref_item{'title'} = $co{'title'};
1955                 $ref_item{'refid'} = $ref_id;
1956                 $ref_item{'epoch'} = $co{'committer_epoch'};
1957                 $ref_item{'age'} = $co{'age_string'};
1958         } else {
1959                 $ref_item{'reftype'} = $type;
1960                 $ref_item{'name'} = $ref_file;
1961                 $ref_item{'refid'} = $ref_id;
1962         }
1963
1964         return %ref_item;
1965 }
1966
1967 # parse line of git-diff-tree "raw" output
1968 sub parse_difftree_raw_line {
1969         my $line = shift;
1970         my %res;
1971
1972         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1973         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1974         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1975                 $res{'from_mode'} = $1;
1976                 $res{'to_mode'} = $2;
1977                 $res{'from_id'} = $3;
1978                 $res{'to_id'} = $4;
1979                 $res{'status'} = $5;
1980                 $res{'similarity'} = $6;
1981                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1982                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1983                 } else {
1984                         $res{'file'} = unquote($7);
1985                 }
1986         }
1987         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1988         # combined diff (for merge commit)
1989         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1990                 $res{'nparents'}  = length($1);
1991                 $res{'from_mode'} = [ split(' ', $2) ];
1992                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1993                 $res{'from_id'} = [ split(' ', $3) ];
1994                 $res{'to_id'} = pop @{$res{'from_id'}};
1995                 $res{'status'} = [ split('', $4) ];
1996                 $res{'to_file'} = unquote($5);
1997         }
1998         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1999         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2000                 $res{'commit'} = $1;
2001         }
2002
2003         return wantarray ? %res : \%res;
2004 }
2005
2006 # parse line of git-ls-tree output
2007 sub parse_ls_tree_line ($;%) {
2008         my $line = shift;
2009         my %opts = @_;
2010         my %res;
2011
2012         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2013         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2014
2015         $res{'mode'} = $1;
2016         $res{'type'} = $2;
2017         $res{'hash'} = $3;
2018         if ($opts{'-z'}) {
2019                 $res{'name'} = $4;
2020         } else {
2021                 $res{'name'} = unquote($4);
2022         }
2023
2024         return wantarray ? %res : \%res;
2025 }
2026
2027 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2028 sub parse_from_to_diffinfo {
2029         my ($diffinfo, $from, $to, @parents) = @_;
2030
2031         if ($diffinfo->{'nparents'}) {
2032                 # combined diff
2033                 $from->{'file'} = [];
2034                 $from->{'href'} = [];
2035                 fill_from_file_info($diffinfo, @parents)
2036                         unless exists $diffinfo->{'from_file'};
2037                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2038                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2039                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2040                                 $from->{'href'}[$i] = href(action=>"blob",
2041                                                            hash_base=>$parents[$i],
2042                                                            hash=>$diffinfo->{'from_id'}[$i],
2043                                                            file_name=>$from->{'file'}[$i]);
2044                         } else {
2045                                 $from->{'href'}[$i] = undef;
2046                         }
2047                 }
2048         } else {
2049                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2050                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2051                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2052                                                hash=>$diffinfo->{'from_id'},
2053                                                file_name=>$from->{'file'});
2054                 } else {
2055                         delete $from->{'href'};
2056                 }
2057         }
2058
2059         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2060         if (!is_deleted($diffinfo)) { # file exists in result
2061                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2062                                      hash=>$diffinfo->{'to_id'},
2063                                      file_name=>$to->{'file'});
2064         } else {
2065                 delete $to->{'href'};
2066         }
2067 }
2068
2069 ## ......................................................................
2070 ## parse to array of hashes functions
2071
2072 sub git_get_heads_list {
2073         my $limit = shift;
2074         my @headslist;
2075
2076         open my $fd, '-|', git_cmd(), 'for-each-ref',
2077                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2078                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2079                 'refs/heads'
2080                 or return;
2081         while (my $line = <$fd>) {
2082                 my %ref_item;
2083
2084                 chomp $line;
2085                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2086                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2087                 my ($committer, $epoch, $tz) =
2088                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2089                 $name =~ s!^refs/heads/!!;
2090
2091                 $ref_item{'name'}  = $name;
2092                 $ref_item{'id'}    = $hash;
2093                 $ref_item{'title'} = $title || '(no commit message)';
2094                 $ref_item{'epoch'} = $epoch;
2095                 if ($epoch) {
2096                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2097                 } else {
2098                         $ref_item{'age'} = "unknown";
2099                 }
2100
2101                 push @headslist, \%ref_item;
2102         }
2103         close $fd;
2104
2105         return wantarray ? @headslist : \@headslist;
2106 }
2107
2108 sub git_get_tags_list {
2109         my $limit = shift;
2110         my @tagslist;
2111
2112         open my $fd, '-|', git_cmd(), 'for-each-ref',
2113                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2114                 '--format=%(objectname) %(objecttype) %(refname) '.
2115                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2116                 'refs/tags'
2117                 or return;
2118         while (my $line = <$fd>) {
2119                 my %ref_item;
2120
2121                 chomp $line;
2122                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2123                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2124                 my ($creator, $epoch, $tz) =
2125                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2126                 $name =~ s!^refs/tags/!!;
2127
2128                 $ref_item{'type'} = $type;
2129                 $ref_item{'id'} = $id;
2130                 $ref_item{'name'} = $name;
2131                 if ($type eq "tag") {
2132                         $ref_item{'subject'} = $title;
2133                         $ref_item{'reftype'} = $reftype;
2134                         $ref_item{'refid'}   = $refid;
2135                 } else {
2136                         $ref_item{'reftype'} = $type;
2137                         $ref_item{'refid'}   = $id;
2138                 }
2139
2140                 if ($type eq "tag" || $type eq "commit") {
2141                         $ref_item{'epoch'} = $epoch;
2142                         if ($epoch) {
2143                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2144                         } else {
2145                                 $ref_item{'age'} = "unknown";
2146                         }
2147                 }
2148
2149                 push @tagslist, \%ref_item;
2150         }
2151         close $fd;
2152
2153         return wantarray ? @tagslist : \@tagslist;
2154 }
2155
2156 ## ----------------------------------------------------------------------
2157 ## filesystem-related functions
2158
2159 sub get_file_owner {
2160         my $path = shift;
2161
2162         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2163         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2164         if (!defined $gcos) {
2165                 return undef;
2166         }
2167         my $owner = $gcos;
2168         $owner =~ s/[,;].*$//;
2169         return to_utf8($owner);
2170 }
2171
2172 ## ......................................................................
2173 ## mimetype related functions
2174
2175 sub mimetype_guess_file {
2176         my $filename = shift;
2177         my $mimemap = shift;
2178         -r $mimemap or return undef;
2179
2180         my %mimemap;
2181         open(MIME, $mimemap) or return undef;
2182         while (<MIME>) {
2183                 next if m/^#/; # skip comments
2184                 my ($mime, $exts) = split(/\t+/);
2185                 if (defined $exts) {
2186                         my @exts = split(/\s+/, $exts);
2187                         foreach my $ext (@exts) {
2188                                 $mimemap{$ext} = $mime;
2189                         }
2190                 }
2191         }
2192         close(MIME);
2193
2194         $filename =~ /\.([^.]*)$/;
2195         return $mimemap{$1};
2196 }
2197
2198 sub mimetype_guess {
2199         my $filename = shift;
2200         my $mime;
2201         $filename =~ /\./ or return undef;
2202
2203         if ($mimetypes_file) {
2204                 my $file = $mimetypes_file;
2205                 if ($file !~ m!^/!) { # if it is relative path
2206                         # it is relative to project
2207                         $file = "$projectroot/$project/$file";
2208                 }
2209                 $mime = mimetype_guess_file($filename, $file);
2210         }
2211         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2212         return $mime;
2213 }
2214
2215 sub blob_mimetype {
2216         my $fd = shift;
2217         my $filename = shift;
2218
2219         if ($filename) {
2220                 my $mime = mimetype_guess($filename);
2221                 $mime and return $mime;
2222         }
2223
2224         # just in case
2225         return $default_blob_plain_mimetype unless $fd;
2226
2227         if (-T $fd) {
2228                 return 'text/plain' .
2229                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2230         } elsif (! $filename) {
2231                 return 'application/octet-stream';
2232         } elsif ($filename =~ m/\.png$/i) {
2233                 return 'image/png';
2234         } elsif ($filename =~ m/\.gif$/i) {
2235                 return 'image/gif';
2236         } elsif ($filename =~ m/\.jpe?g$/i) {
2237                 return 'image/jpeg';
2238         } else {
2239                 return 'application/octet-stream';
2240         }
2241 }
2242
2243 ## ======================================================================
2244 ## functions printing HTML: header, footer, error page
2245
2246 sub git_header_html {
2247         my $status = shift || "200 OK";
2248         my $expires = shift;
2249
2250         my $title = "$site_name";
2251         if (defined $project) {
2252                 $title .= " - " . to_utf8($project);
2253                 if (defined $action) {
2254                         $title .= "/$action";
2255                         if (defined $file_name) {
2256                                 $title .= " - " . esc_path($file_name);
2257                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2258                                         $title .= "/";
2259                                 }
2260                         }
2261                 }
2262         }
2263         my $content_type;
2264         # require explicit support from the UA if we are to send the page as
2265         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2266         # we have to do this because MSIE sometimes globs '*/*', pretending to
2267         # support xhtml+xml but choking when it gets what it asked for.
2268         if (defined $cgi->http('HTTP_ACCEPT') &&
2269             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2270             $cgi->Accept('application/xhtml+xml') != 0) {
2271                 $content_type = 'application/xhtml+xml';
2272         } else {
2273                 $content_type = 'text/html';
2274         }
2275         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2276                            -status=> $status, -expires => $expires);
2277         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2278         print <<EOF;
2279 <?xml version="1.0" encoding="utf-8"?>
2280 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2281 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2282 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2283 <!-- git core binaries version $git_version -->
2284 <head>
2285 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2286 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2287 <meta name="robots" content="index, nofollow"/>
2288 <title>$title</title>
2289 EOF
2290 # print out each stylesheet that exist
2291         if (defined $stylesheet) {
2292 #provides backwards capability for those people who define style sheet in a config file
2293                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2294         } else {
2295                 foreach my $stylesheet (@stylesheets) {
2296                         next unless $stylesheet;
2297                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2298                 }
2299         }
2300         if (defined $project) {
2301                 printf('<link rel="alternate" title="%s log RSS feed" '.
2302                        'href="%s" type="application/rss+xml" />'."\n",
2303                        esc_param($project), href(action=>"rss"));
2304                 printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2305                        'href="%s" type="application/rss+xml" />'."\n",
2306                        esc_param($project), href(action=>"rss",
2307                                                  extra_options=>"--no-merges"));
2308                 printf('<link rel="alternate" title="%s log Atom feed" '.
2309                        'href="%s" type="application/atom+xml" />'."\n",
2310                        esc_param($project), href(action=>"atom"));
2311                 printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2312                        'href="%s" type="application/atom+xml" />'."\n",
2313                        esc_param($project), href(action=>"atom",
2314                                                  extra_options=>"--no-merges"));
2315         } else {
2316                 printf('<link rel="alternate" title="%s projects list" '.
2317                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2318                        $site_name, href(project=>undef, action=>"project_index"));
2319                 printf('<link rel="alternate" title="%s projects feeds" '.
2320                        'href="%s" type="text/x-opml"/>'."\n",
2321                        $site_name, href(project=>undef, action=>"opml"));
2322         }
2323         if (defined $favicon) {
2324                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2325         }
2326
2327         print "</head>\n" .
2328               "<body>\n";
2329
2330         if (-f $site_header) {
2331                 open (my $fd, $site_header);
2332                 print <$fd>;
2333                 close $fd;
2334         }
2335
2336         print "<div class=\"page_header\">\n" .
2337               $cgi->a({-href => esc_url($logo_url),
2338                        -title => $logo_label},
2339                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2340         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2341         if (defined $project) {
2342                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2343                 if (defined $action) {
2344                         print " / $action";
2345                 }
2346                 print "\n";
2347         }
2348         print "</div>\n";
2349
2350         my ($have_search) = gitweb_check_feature('search');
2351         if ((defined $project) && ($have_search)) {
2352                 if (!defined $searchtext) {
2353                         $searchtext = "";
2354                 }
2355                 my $search_hash;
2356                 if (defined $hash_base) {
2357                         $search_hash = $hash_base;
2358                 } elsif (defined $hash) {
2359                         $search_hash = $hash;
2360                 } else {
2361                         $search_hash = "HEAD";
2362                 }
2363                 my $action = $my_uri;
2364                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2365                 if ($use_pathinfo) {
2366                         $action .= "/$project";
2367                 } else {
2368                         $cgi->param("p", $project);
2369                 }
2370                 $cgi->param("a", "search");
2371                 $cgi->param("h", $search_hash);
2372                 print $cgi->startform(-method => "get", -action => $action) .
2373                       "<div class=\"search\">\n" .
2374                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2375                       $cgi->hidden(-name => "a") . "\n" .
2376                       $cgi->hidden(-name => "h") . "\n" .
2377                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2378                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2379                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2380                       " search:\n",
2381                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2382                       "</div>" .
2383                       $cgi->end_form() . "\n";
2384         }
2385 }
2386
2387 sub git_footer_html {
2388         print "<div class=\"page_footer\">\n";
2389         if (defined $project) {
2390                 my $descr = git_get_project_description($project);
2391                 if (defined $descr) {
2392                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2393                 }
2394                 print $cgi->a({-href => href(action=>"rss"),
2395                               -class => "rss_logo"}, "RSS") . " ";
2396                 print $cgi->a({-href => href(action=>"atom"),
2397                               -class => "rss_logo"}, "Atom") . "\n";
2398         } else {
2399                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2400                               -class => "rss_logo"}, "OPML") . " ";
2401                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2402                               -class => "rss_logo"}, "TXT") . "\n";
2403         }
2404         print "</div>\n" ;
2405
2406         if (-f $site_footer) {
2407                 open (my $fd, $site_footer);
2408                 print <$fd>;
2409                 close $fd;
2410         }
2411
2412         print "</body>\n" .
2413               "</html>";
2414 }
2415
2416 sub die_error {
2417         my $status = shift || "403 Forbidden";
2418         my $error = shift || "Malformed query, file missing or permission denied";
2419
2420         git_header_html($status);
2421         print <<EOF;
2422 <div class="page_body">
2423 <br /><br />
2424 $status - $error
2425 <br />
2426 </div>
2427 EOF
2428         git_footer_html();
2429         exit;
2430 }
2431
2432 ## ----------------------------------------------------------------------
2433 ## functions printing or outputting HTML: navigation
2434
2435 sub git_print_page_nav {
2436         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2437         $extra = '' if !defined $extra; # pager or formats
2438
2439         my @navs = qw(summary shortlog log commit commitdiff tree);
2440         if ($suppress) {
2441                 @navs = grep { $_ ne $suppress } @navs;
2442         }
2443
2444         my %arg = map { $_ => {action=>$_} } @navs;
2445         if (defined $head) {
2446                 for (qw(commit commitdiff)) {
2447                         $arg{$_}{'hash'} = $head;
2448                 }
2449                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2450                         for (qw(shortlog log)) {
2451                                 $arg{$_}{'hash'} = $head;
2452                         }
2453                 }
2454         }
2455         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2456         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2457
2458         print "<div class=\"page_nav\">\n" .
2459                 (join " | ",
2460                  map { $_ eq $current ?
2461                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2462                  } @navs);
2463         print "<br/>\n$extra<br/>\n" .
2464               "</div>\n";
2465 }
2466
2467 sub format_paging_nav {
2468         my ($action, $hash, $head, $page, $nrevs) = @_;
2469         my $paging_nav;
2470
2471
2472         if ($hash ne $head || $page) {
2473                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2474         } else {
2475                 $paging_nav .= "HEAD";
2476         }
2477
2478         if ($page > 0) {
2479                 $paging_nav .= " &sdot; " .
2480                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2481                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2482         } else {
2483                 $paging_nav .= " &sdot; prev";
2484         }
2485
2486         if ($nrevs >= (100 * ($page+1)-1)) {
2487                 $paging_nav .= " &sdot; " .
2488                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2489                                  -accesskey => "n", -title => "Alt-n"}, "next");
2490         } else {
2491                 $paging_nav .= " &sdot; next";
2492         }
2493
2494         return $paging_nav;
2495 }
2496
2497 ## ......................................................................
2498 ## functions printing or outputting HTML: div
2499
2500 sub git_print_header_div {
2501         my ($action, $title, $hash, $hash_base) = @_;
2502         my %args = ();
2503
2504         $args{'action'} = $action;
2505         $args{'hash'} = $hash if $hash;
2506         $args{'hash_base'} = $hash_base if $hash_base;
2507
2508         print "<div class=\"header\">\n" .
2509               $cgi->a({-href => href(%args), -class => "title"},
2510               $title ? $title : $action) .
2511               "\n</div>\n";
2512 }
2513
2514 #sub git_print_authorship (\%) {
2515 sub git_print_authorship {
2516         my $co = shift;
2517
2518         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2519         print "<div class=\"author_date\">" .
2520               esc_html($co->{'author_name'}) .
2521               " [$ad{'rfc2822'}";
2522         if ($ad{'hour_local'} < 6) {
2523                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2524                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2525         } else {
2526                 printf(" (%02d:%02d %s)",
2527                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2528         }
2529         print "]</div>\n";
2530 }
2531
2532 sub git_print_page_path {
2533         my $name = shift;
2534         my $type = shift;
2535         my $hb = shift;
2536
2537
2538         print "<div class=\"page_path\">";
2539         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2540                       -title => 'tree root'}, to_utf8("[$project]"));
2541         print " / ";
2542         if (defined $name) {
2543                 my @dirname = split '/', $name;
2544                 my $basename = pop @dirname;
2545                 my $fullname = '';
2546
2547                 foreach my $dir (@dirname) {
2548                         $fullname .= ($fullname ? '/' : '') . $dir;
2549                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2550                                                      hash_base=>$hb),
2551                                       -title => $fullname}, esc_path($dir));
2552                         print " / ";
2553                 }
2554                 if (defined $type && $type eq 'blob') {
2555                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2556                                                      hash_base=>$hb),
2557                                       -title => $name}, esc_path($basename));
2558                 } elsif (defined $type && $type eq 'tree') {
2559                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2560                                                      hash_base=>$hb),
2561                                       -title => $name}, esc_path($basename));
2562                         print " / ";
2563                 } else {
2564                         print esc_path($basename);
2565                 }
2566         }
2567         print "<br/></div>\n";
2568 }
2569
2570 # sub git_print_log (\@;%) {
2571 sub git_print_log ($;%) {
2572         my $log = shift;
2573         my %opts = @_;
2574
2575         if ($opts{'-remove_title'}) {
2576                 # remove title, i.e. first line of log
2577                 shift @$log;
2578         }
2579         # remove leading empty lines
2580         while (defined $log->[0] && $log->[0] eq "") {
2581                 shift @$log;
2582         }
2583
2584         # print log
2585         my $signoff = 0;
2586         my $empty = 0;
2587         foreach my $line (@$log) {
2588                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2589                         $signoff = 1;
2590                         $empty = 0;
2591                         if (! $opts{'-remove_signoff'}) {
2592                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2593                                 next;
2594                         } else {
2595                                 # remove signoff lines
2596                                 next;
2597                         }
2598                 } else {
2599                         $signoff = 0;
2600                 }
2601
2602                 # print only one empty line
2603                 # do not print empty line after signoff
2604                 if ($line eq "") {
2605                         next if ($empty || $signoff);
2606                         $empty = 1;
2607                 } else {
2608                         $empty = 0;
2609                 }
2610
2611                 print format_log_line_html($line) . "<br/>\n";
2612         }
2613
2614         if ($opts{'-final_empty_line'}) {
2615                 # end with single empty line
2616                 print "<br/>\n" unless $empty;
2617         }
2618 }
2619
2620 # return link target (what link points to)
2621 sub git_get_link_target {
2622         my $hash = shift;
2623         my $link_target;
2624
2625         # read link
2626         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2627                 or return;
2628         {
2629                 local $/;
2630                 $link_target = <$fd>;
2631         }
2632         close $fd
2633                 or return;
2634
2635         return $link_target;
2636 }
2637
2638 # given link target, and the directory (basedir) the link is in,
2639 # return target of link relative to top directory (top tree);
2640 # return undef if it is not possible (including absolute links).
2641 sub normalize_link_target {
2642         my ($link_target, $basedir, $hash_base) = @_;
2643
2644         # we can normalize symlink target only if $hash_base is provided
2645         return unless $hash_base;
2646
2647         # absolute symlinks (beginning with '/') cannot be normalized
2648         return if (substr($link_target, 0, 1) eq '/');
2649
2650         # normalize link target to path from top (root) tree (dir)
2651         my $path;
2652         if ($basedir) {
2653                 $path = $basedir . '/' . $link_target;
2654         } else {
2655                 # we are in top (root) tree (dir)
2656                 $path = $link_target;
2657         }
2658
2659         # remove //, /./, and /../
2660         my @path_parts;
2661         foreach my $part (split('/', $path)) {
2662                 # discard '.' and ''
2663                 next if (!$part || $part eq '.');
2664                 # handle '..'
2665                 if ($part eq '..') {
2666                         if (@path_parts) {
2667                                 pop @path_parts;
2668                         } else {
2669                                 # link leads outside repository (outside top dir)
2670                                 return;
2671                         }
2672                 } else {
2673                         push @path_parts, $part;
2674                 }
2675         }
2676         $path = join('/', @path_parts);
2677
2678         return $path;
2679 }
2680
2681 # print tree entry (row of git_tree), but without encompassing <tr> element
2682 sub git_print_tree_entry {
2683         my ($t, $basedir, $hash_base, $have_blame) = @_;
2684
2685         my %base_key = ();
2686         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2687
2688         # The format of a table row is: mode list link.  Where mode is
2689         # the mode of the entry, list is the name of the entry, an href,
2690         # and link is the action links of the entry.
2691
2692         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2693         if ($t->{'type'} eq "blob") {
2694                 print "<td class=\"list\">" .
2695                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2696                                                file_name=>"$basedir$t->{'name'}", %base_key),
2697                                 -class => "list"}, esc_path($t->{'name'}));
2698                 if (S_ISLNK(oct $t->{'mode'})) {
2699                         my $link_target = git_get_link_target($t->{'hash'});
2700                         if ($link_target) {
2701                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2702                                 if (defined $norm_target) {
2703                                         print " -> " .
2704                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2705                                                                      file_name=>$norm_target),
2706                                                        -title => $norm_target}, esc_path($link_target));
2707                                 } else {
2708                                         print " -> " . esc_path($link_target);
2709                                 }
2710                         }
2711                 }
2712                 print "</td>\n";
2713                 print "<td class=\"link\">";
2714                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2715                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2716                               "blob");
2717                 if ($have_blame) {
2718                         print " | " .
2719                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2720                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2721                                       "blame");
2722                 }
2723                 if (defined $hash_base) {
2724                         print " | " .
2725                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2726                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2727                                       "history");
2728                 }
2729                 print " | " .
2730                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2731                                                file_name=>"$basedir$t->{'name'}")},
2732                                 "raw");
2733                 print "</td>\n";
2734
2735         } elsif ($t->{'type'} eq "tree") {
2736                 print "<td class=\"list\">";
2737                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2738                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2739                               esc_path($t->{'name'}));
2740                 print "</td>\n";
2741                 print "<td class=\"link\">";
2742                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2743                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2744                               "tree");
2745                 if (defined $hash_base) {
2746                         print " | " .
2747                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2748                                                      file_name=>"$basedir$t->{'name'}")},
2749                                       "history");
2750                 }
2751                 print "</td>\n";
2752         } else {
2753                 # unknown object: we can only present history for it
2754                 # (this includes 'commit' object, i.e. submodule support)
2755                 print "<td class=\"list\">" .
2756                       esc_path($t->{'name'}) .
2757                       "</td>\n";
2758                 print "<td class=\"link\">";
2759                 if (defined $hash_base) {
2760                         print $cgi->a({-href => href(action=>"history",
2761                                                      hash_base=>$hash_base,
2762                                                      file_name=>"$basedir$t->{'name'}")},
2763                                       "history");
2764                 }
2765                 print "</td>\n";
2766         }
2767 }
2768
2769 ## ......................................................................
2770 ## functions printing large fragments of HTML
2771
2772 sub fill_from_file_info {
2773         my ($diff, @parents) = @_;
2774
2775         $diff->{'from_file'} = [ ];
2776         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2777         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2778                 if ($diff->{'status'}[$i] eq 'R' ||
2779                     $diff->{'status'}[$i] eq 'C') {
2780                         $diff->{'from_file'}[$i] =
2781                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2782                 }
2783         }
2784
2785         return $diff;
2786 }
2787
2788 # parameters can be strings, or references to arrays of strings
2789 sub from_ids_eq {
2790         my ($a, $b) = @_;
2791
2792         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2793                 for (my $i = 0; $i < @$a; ++$i) {
2794                         return 0 unless ($a->[$i] eq $b->[$i]);
2795                 }
2796                 return 1;
2797         } elsif (!ref($a) && !ref($b)) {
2798                 return $a eq $b;
2799         } else {
2800                 return 0;
2801         }
2802 }
2803
2804 sub is_deleted {
2805         my $diffinfo = shift;
2806
2807         return $diffinfo->{'to_id'} eq ('0' x 40);
2808 }
2809
2810 sub git_difftree_body {
2811         my ($difftree, $hash, @parents) = @_;
2812         my ($parent) = $parents[0];
2813         my ($have_blame) = gitweb_check_feature('blame');
2814         print "<div class=\"list_head\">\n";
2815         if ($#{$difftree} > 10) {
2816                 print(($#{$difftree} + 1) . " files changed:\n");
2817         }
2818         print "</div>\n";
2819
2820         print "<table class=\"" .
2821               (@parents > 1 ? "combined " : "") .
2822               "diff_tree\">\n";
2823
2824         # header only for combined diff in 'commitdiff' view
2825         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2826         if ($has_header) {
2827                 # table header
2828                 print "<thead><tr>\n" .
2829                        "<th></th><th></th>\n"; # filename, patchN link
2830                 for (my $i = 0; $i < @parents; $i++) {
2831                         my $par = $parents[$i];
2832                         print "<th>" .
2833                               $cgi->a({-href => href(action=>"commitdiff",
2834                                                      hash=>$hash, hash_parent=>$par),
2835                                        -title => 'commitdiff to parent number ' .
2836                                                   ($i+1) . ': ' . substr($par,0,7)},
2837                                       $i+1) .
2838                               "&nbsp;</th>\n";
2839                 }
2840                 print "</tr></thead>\n<tbody>\n";
2841         }
2842
2843         my $alternate = 1;
2844         my $patchno = 0;
2845         foreach my $line (@{$difftree}) {
2846                 my $diff;
2847                 if (ref($line) eq "HASH") {
2848                         # pre-parsed (or generated by hand)
2849                         $diff = $line;
2850                 } else {
2851                         $diff = parse_difftree_raw_line($line);
2852                 }
2853
2854                 if ($alternate) {
2855                         print "<tr class=\"dark\">\n";
2856                 } else {
2857                         print "<tr class=\"light\">\n";
2858                 }
2859                 $alternate ^= 1;
2860
2861                 if (exists $diff->{'nparents'}) { # combined diff
2862
2863                         fill_from_file_info($diff, @parents)
2864                                 unless exists $diff->{'from_file'};
2865
2866                         if (!is_deleted($diff)) {
2867                                 # file exists in the result (child) commit
2868                                 print "<td>" .
2869                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2870                                                              file_name=>$diff->{'to_file'},
2871                                                              hash_base=>$hash),
2872                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2873                                       "</td>\n";
2874                         } else {
2875                                 print "<td>" .
2876                                       esc_path($diff->{'to_file'}) .
2877                                       "</td>\n";
2878                         }
2879
2880                         if ($action eq 'commitdiff') {
2881                                 # link to patch
2882                                 $patchno++;
2883                                 print "<td class=\"link\">" .
2884                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2885                                       " | " .
2886                                       "</td>\n";
2887                         }
2888
2889                         my $has_history = 0;
2890                         my $not_deleted = 0;
2891                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2892                                 my $hash_parent = $parents[$i];
2893                                 my $from_hash = $diff->{'from_id'}[$i];
2894                                 my $from_path = $diff->{'from_file'}[$i];
2895                                 my $status = $diff->{'status'}[$i];
2896
2897                                 $has_history ||= ($status ne 'A');
2898                                 $not_deleted ||= ($status ne 'D');
2899
2900                                 if ($status eq 'A') {
2901                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2902                                 } elsif ($status eq 'D') {
2903                                         print "<td class=\"link\">" .
2904                                               $cgi->a({-href => href(action=>"blob",
2905                                                                      hash_base=>$hash,
2906                                                                      hash=>$from_hash,
2907                                                                      file_name=>$from_path)},
2908                                                       "blob" . ($i+1)) .
2909                                               " | </td>\n";
2910                                 } else {
2911                                         if ($diff->{'to_id'} eq $from_hash) {
2912                                                 print "<td class=\"link nochange\">";
2913                                         } else {
2914                                                 print "<td class=\"link\">";
2915                                         }
2916                                         print $cgi->a({-href => href(action=>"blobdiff",
2917                                                                      hash=>$diff->{'to_id'},
2918                                                                      hash_parent=>$from_hash,
2919                                                                      hash_base=>$hash,
2920                                                                      hash_parent_base=>$hash_parent,
2921                                                                      file_name=>$diff->{'to_file'},
2922                                                                      file_parent=>$from_path)},
2923                                                       "diff" . ($i+1)) .
2924                                               " | </td>\n";
2925                                 }
2926                         }
2927
2928                         print "<td class=\"link\">";
2929                         if ($not_deleted) {
2930                                 print $cgi->a({-href => href(action=>"blob",
2931                                                              hash=>$diff->{'to_id'},
2932                                                              file_name=>$diff->{'to_file'},
2933                                                              hash_base=>$hash)},
2934                                               "blob");
2935                                 print " | " if ($has_history);
2936                         }
2937                         if ($has_history) {
2938                                 print $cgi->a({-href => href(action=>"history",
2939                                                              file_name=>$diff->{'to_file'},
2940                                                              hash_base=>$hash)},
2941                                               "history");
2942                         }
2943                         print "</td>\n";
2944
2945                         print "</tr>\n";
2946                         next; # instead of 'else' clause, to avoid extra indent
2947                 }
2948                 # else ordinary diff
2949
2950                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2951                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2952                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2953                         $to_mode_oct = oct $diff->{'to_mode'};
2954                         if (S_ISREG($to_mode_oct)) { # only for regular file
2955                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2956                         }
2957                         $to_file_type = file_type($diff->{'to_mode'});
2958                 }
2959                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2960                         $from_mode_oct = oct $diff->{'from_mode'};
2961                         if (S_ISREG($to_mode_oct)) { # only for regular file
2962                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2963                         }
2964                         $from_file_type = file_type($diff->{'from_mode'});
2965                 }
2966
2967                 if ($diff->{'status'} eq "A") { # created
2968                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2969                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2970                         $mode_chng   .= "]</span>";
2971                         print "<td>";
2972                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2973                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2974                                       -class => "list"}, esc_path($diff->{'file'}));
2975                         print "</td>\n";
2976                         print "<td>$mode_chng</td>\n";
2977                         print "<td class=\"link\">";
2978                         if ($action eq 'commitdiff') {
2979                                 # link to patch
2980                                 $patchno++;
2981                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2982                                 print " | ";
2983                         }
2984                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2985                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2986                                       "blob");
2987                         print "</td>\n";
2988
2989                 } elsif ($diff->{'status'} eq "D") { # deleted
2990                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2991                         print "<td>";
2992                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2993                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2994                                        -class => "list"}, esc_path($diff->{'file'}));
2995                         print "</td>\n";
2996                         print "<td>$mode_chng</td>\n";
2997                         print "<td class=\"link\">";
2998                         if ($action eq 'commitdiff') {
2999                                 # link to patch
3000                                 $patchno++;
3001                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3002                                 print " | ";
3003                         }
3004                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3005                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3006                                       "blob") . " | ";
3007                         if ($have_blame) {
3008                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3009                                                              file_name=>$diff->{'file'})},
3010                                               "blame") . " | ";
3011                         }
3012                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3013                                                      file_name=>$diff->{'file'})},
3014                                       "history");
3015                         print "</td>\n";
3016
3017                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3018                         my $mode_chnge = "";
3019                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3020                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3021                                 if ($from_file_type ne $to_file_type) {
3022                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3023                                 }
3024                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3025                                         if ($from_mode_str && $to_mode_str) {
3026                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3027                                         } elsif ($to_mode_str) {
3028                                                 $mode_chnge .= " mode: $to_mode_str";
3029                                         }
3030                                 }
3031                                 $mode_chnge .= "]</span>\n";
3032                         }
3033                         print "<td>";
3034                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3035                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3036                                       -class => "list"}, esc_path($diff->{'file'}));
3037                         print "</td>\n";
3038                         print "<td>$mode_chnge</td>\n";
3039                         print "<td class=\"link\">";
3040                         if ($action eq 'commitdiff') {
3041                                 # link to patch
3042                                 $patchno++;
3043                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3044                                       " | ";
3045                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3046                                 # "commit" view and modified file (not onlu mode changed)
3047                                 print $cgi->a({-href => href(action=>"blobdiff",
3048                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3049                                                              hash_base=>$hash, hash_parent_base=>$parent,
3050                                                              file_name=>$diff->{'file'})},
3051                                               "diff") .
3052                                       " | ";
3053                         }
3054                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3055                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3056                                        "blob") . " | ";
3057                         if ($have_blame) {
3058                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3059                                                              file_name=>$diff->{'file'})},
3060                                               "blame") . " | ";
3061                         }
3062                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3063                                                      file_name=>$diff->{'file'})},
3064                                       "history");
3065                         print "</td>\n";
3066
3067                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3068                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3069                         my $nstatus = $status_name{$diff->{'status'}};
3070                         my $mode_chng = "";
3071                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3072                                 # mode also for directories, so we cannot use $to_mode_str
3073                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3074                         }
3075                         print "<td>" .
3076                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3077                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3078                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3079                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3080                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3081                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3082                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3083                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3084                               "<td class=\"link\">";
3085                         if ($action eq 'commitdiff') {
3086                                 # link to patch
3087                                 $patchno++;
3088                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3089                                       " | ";
3090                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3091                                 # "commit" view and modified file (not only pure rename or copy)
3092                                 print $cgi->a({-href => href(action=>"blobdiff",
3093                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3094                                                              hash_base=>$hash, hash_parent_base=>$parent,
3095                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3096                                               "diff") .
3097                                       " | ";
3098                         }
3099                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3100                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3101                                       "blob") . " | ";
3102                         if ($have_blame) {
3103                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3104                                                              file_name=>$diff->{'to_file'})},
3105                                               "blame") . " | ";
3106                         }
3107                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3108                                                     file_name=>$diff->{'to_file'})},
3109                                       "history");
3110                         print "</td>\n";
3111
3112                 } # we should not encounter Unmerged (U) or Unknown (X) status
3113                 print "</tr>\n";
3114         }
3115         print "</tbody>" if $has_header;
3116         print "</table>\n";
3117 }
3118
3119 sub git_patchset_body {
3120         my ($fd, $difftree, $hash, @hash_parents) = @_;
3121         my ($hash_parent) = $hash_parents[0];
3122
3123         my $patch_idx = 0;
3124         my $patch_number = 0;
3125         my $patch_line;
3126         my $diffinfo;
3127         my (%from, %to);
3128
3129         print "<div class=\"patchset\">\n";
3130
3131         # skip to first patch
3132         while ($patch_line = <$fd>) {
3133                 chomp $patch_line;
3134
3135                 last if ($patch_line =~ m/^diff /);
3136         }
3137
3138  PATCH:
3139         while ($patch_line) {
3140                 my @diff_header;
3141                 my ($from_id, $to_id);
3142
3143                 # git diff header
3144                 #assert($patch_line =~ m/^diff /) if DEBUG;
3145                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3146                 $patch_number++;
3147                 push @diff_header, $patch_line;
3148
3149                 # extended diff header
3150         EXTENDED_HEADER:
3151                 while ($patch_line = <$fd>) {
3152                         chomp $patch_line;
3153
3154                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3155
3156                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3157                                 $from_id = $1;
3158                                 $to_id   = $2;
3159                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3160                                 $from_id = [ split(',', $1) ];
3161                                 $to_id   = $2;
3162                         }
3163
3164                         push @diff_header, $patch_line;
3165                 }
3166                 my $last_patch_line = $patch_line;
3167
3168                 # check if current patch belong to current raw line
3169                 # and parse raw git-diff line if needed
3170                 if (defined $diffinfo &&
3171                     defined $from_id && defined $to_id &&
3172                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3173                     $diffinfo->{'to_id'} eq $to_id) {
3174                         # this is continuation of a split patch
3175                         print "<div class=\"patch cont\">\n";
3176                 } else {
3177                         # advance raw git-diff output if needed
3178                         $patch_idx++ if defined $diffinfo;
3179
3180                         # compact combined diff output can have some patches skipped
3181                         # find which patch (using pathname of result) we are at now
3182                         my $to_name;
3183                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3184                                 $to_name = $1;
3185                         }
3186
3187                         do {
3188                                 # read and prepare patch information
3189                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3190                                         # pre-parsed (or generated by hand)
3191                                         $diffinfo = $difftree->[$patch_idx];
3192                                 } else {
3193                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3194                                 }
3195
3196                                 # check if current raw line has no patch (it got simplified)
3197                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3198                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3199                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3200                                               "</div>\n";  # class="patch"
3201
3202                                         $patch_idx++;
3203                                         $patch_number++;
3204                                 }
3205                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3206                                  $patch_idx > $#$difftree);
3207
3208                         # modifies %from, %to hashes
3209                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3210
3211                         # this is first patch for raw difftree line with $patch_idx index
3212                         # we index @$difftree array from 0, but number patches from 1
3213                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3214                 }
3215
3216                 # print "git diff" header
3217                 $patch_line = shift @diff_header;
3218                 print format_git_diff_header_line($patch_line, $diffinfo,
3219                                                   \%from, \%to);
3220
3221                 # print extended diff header
3222                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3223         EXTENDED_HEADER:
3224                 foreach $patch_line (@diff_header) {
3225                         print format_extended_diff_header_line($patch_line, $diffinfo,
3226                                                                \%from, \%to);
3227                 }
3228                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3229
3230                 # from-file/to-file diff header
3231                 $patch_line = $last_patch_line;
3232                 if (! $patch_line) {
3233                         print "</div>\n"; # class="patch"
3234                         last PATCH;
3235                 }
3236                 next PATCH if ($patch_line =~ m/^diff /);
3237                 #assert($patch_line =~ m/^---/) if DEBUG;
3238                 #assert($patch_line eq $last_patch_line) if DEBUG;
3239
3240                 $patch_line = <$fd>;
3241                 chomp $patch_line;
3242                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3243
3244                 print format_diff_from_to_header($last_patch_line, $patch_line,
3245                                                  $diffinfo, \%from, \%to,
3246                                                  @hash_parents);
3247
3248                 # the patch itself
3249         LINE:
3250                 while ($patch_line = <$fd>) {
3251                         chomp $patch_line;
3252
3253                         next PATCH if ($patch_line =~ m/^diff /);
3254
3255                         print format_diff_line($patch_line, \%from, \%to);
3256                 }
3257
3258         } continue {
3259                 print "</div>\n"; # class="patch"
3260         }
3261
3262         # for compact combined (--cc) format, with chunk and patch simpliciaction
3263         # patchset might be empty, but there might be unprocessed raw lines
3264         for ($patch_idx++ if $patch_number > 0;
3265              $patch_idx < @$difftree;
3266              $patch_idx++) {
3267                 # read and prepare patch information
3268                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3269                         # pre-parsed (or generated by hand)
3270                         $diffinfo = $difftree->[$patch_idx];
3271                 } else {
3272                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3273                 }
3274
3275                 # generate anchor for "patch" links in difftree / whatchanged part
3276                 print "<div class=\"patch\" id=\"patch". ($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>" . esc_html(chop_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                 $alternate ^= 1;
3443                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3444                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3445                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3446                       "<td>";
3447                 print format_subject_html($co{'title'}, $co{'title_short'},
3448                                           href(action=>"commit", hash=>$commit), $ref);
3449                 print "</td>\n" .
3450                       "<td class=\"link\">" .
3451                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3452                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3453                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3454                 my $snapshot_links = format_snapshot_links($commit);
3455                 if (defined $snapshot_links) {
3456                         print " | " . $snapshot_links;
3457                 }
3458                 print "</td>\n" .
3459                       "</tr>\n";
3460         }
3461         if (defined $extra) {
3462                 print "<tr>\n" .
3463                       "<td colspan=\"4\">$extra</td>\n" .
3464                       "</tr>\n";
3465         }
3466         print "</table>\n";
3467 }
3468
3469 sub git_history_body {
3470         # Warning: assumes constant type (blob or tree) during history
3471         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3472
3473         $from = 0 unless defined $from;
3474         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3475
3476         print "<table class=\"history\" cellspacing=\"0\">\n";
3477         my $alternate = 1;
3478         for (my $i = $from; $i <= $to; $i++) {
3479                 my %co = %{$commitlist->[$i]};
3480                 if (!%co) {
3481                         next;
3482                 }
3483                 my $commit = $co{'id'};
3484
3485                 my $ref = format_ref_marker($refs, $commit);
3486
3487                 if ($alternate) {
3488                         print "<tr class=\"dark\">\n";
3489                 } else {
3490                         print "<tr class=\"light\">\n";
3491                 }
3492                 $alternate ^= 1;
3493                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3494                       # shortlog uses      chop_str($co{'author_name'}, 10)
3495                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3496                       "<td>";
3497                 # originally git_history used chop_str($co{'title'}, 50)
3498                 print format_subject_html($co{'title'}, $co{'title_short'},
3499                                           href(action=>"commit", hash=>$commit), $ref);
3500                 print "</td>\n" .
3501                       "<td class=\"link\">" .
3502                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3503                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3504
3505                 if ($ftype eq 'blob') {
3506                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3507                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3508                         if (defined $blob_current && defined $blob_parent &&
3509                                         $blob_current ne $blob_parent) {
3510                                 print " | " .
3511                                         $cgi->a({-href => href(action=>"blobdiff",
3512                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3513                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3514                                                                file_name=>$file_name)},
3515                                                 "diff to current");
3516                         }
3517                 }
3518                 print "</td>\n" .
3519                       "</tr>\n";
3520         }
3521         if (defined $extra) {
3522                 print "<tr>\n" .
3523                       "<td colspan=\"4\">$extra</td>\n" .
3524                       "</tr>\n";
3525         }
3526         print "</table>\n";
3527 }
3528
3529 sub git_tags_body {
3530         # uses global variable $project
3531         my ($taglist, $from, $to, $extra) = @_;
3532         $from = 0 unless defined $from;
3533         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3534
3535         print "<table class=\"tags\" cellspacing=\"0\">\n";
3536         my $alternate = 1;
3537         for (my $i = $from; $i <= $to; $i++) {
3538                 my $entry = $taglist->[$i];
3539                 my %tag = %$entry;
3540                 my $comment = $tag{'subject'};
3541                 my $comment_short;
3542                 if (defined $comment) {
3543                         $comment_short = chop_str($comment, 30, 5);
3544                 }
3545                 if ($alternate) {
3546                         print "<tr class=\"dark\">\n";
3547                 } else {
3548                         print "<tr class=\"light\">\n";
3549                 }
3550                 $alternate ^= 1;
3551                 if (defined $tag{'age'}) {
3552                         print "<td><i>$tag{'age'}</i></td>\n";
3553                 } else {
3554                         print "<td></td>\n";
3555                 }
3556                 print "<td>" .
3557                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3558                                -class => "list name"}, esc_html($tag{'name'})) .
3559                       "</td>\n" .
3560                       "<td>";
3561                 if (defined $comment) {
3562                         print format_subject_html($comment, $comment_short,
3563                                                   href(action=>"tag", hash=>$tag{'id'}));
3564                 }
3565                 print "</td>\n" .
3566                       "<td class=\"selflink\">";
3567                 if ($tag{'type'} eq "tag") {
3568                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3569                 } else {
3570                         print "&nbsp;";
3571                 }
3572                 print "</td>\n" .
3573                       "<td class=\"link\">" . " | " .
3574                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3575                 if ($tag{'reftype'} eq "commit") {
3576                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3577                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3578                 } elsif ($tag{'reftype'} eq "blob") {
3579                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3580                 }
3581                 print "</td>\n" .
3582                       "</tr>";
3583         }
3584         if (defined $extra) {
3585                 print "<tr>\n" .
3586                       "<td colspan=\"5\">$extra</td>\n" .
3587                       "</tr>\n";
3588         }
3589         print "</table>\n";
3590 }
3591
3592 sub git_heads_body {
3593         # uses global variable $project
3594         my ($headlist, $head, $from, $to, $extra) = @_;
3595         $from = 0 unless defined $from;
3596         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3597
3598         print "<table class=\"heads\" cellspacing=\"0\">\n";
3599         my $alternate = 1;
3600         for (my $i = $from; $i <= $to; $i++) {
3601                 my $entry = $headlist->[$i];
3602                 my %ref = %$entry;
3603                 my $curr = $ref{'id'} eq $head;
3604                 if ($alternate) {
3605                         print "<tr class=\"dark\">\n";
3606                 } else {
3607                         print "<tr class=\"light\">\n";
3608                 }
3609                 $alternate ^= 1;
3610                 print "<td><i>$ref{'age'}</i></td>\n" .
3611                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3612                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3613                                -class => "list name"},esc_html($ref{'name'})) .
3614                       "</td>\n" .
3615                       "<td class=\"link\">" .
3616                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3617                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3618                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3619                       "</td>\n" .
3620                       "</tr>";
3621         }
3622         if (defined $extra) {
3623                 print "<tr>\n" .
3624                       "<td colspan=\"3\">$extra</td>\n" .
3625                       "</tr>\n";
3626         }
3627         print "</table>\n";
3628 }
3629
3630 sub git_search_grep_body {
3631         my ($commitlist, $from, $to, $extra) = @_;
3632         $from = 0 unless defined $from;
3633         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3634
3635         print "<table class=\"grep\" cellspacing=\"0\">\n";
3636         my $alternate = 1;
3637         for (my $i = $from; $i <= $to; $i++) {
3638                 my %co = %{$commitlist->[$i]};
3639                 if (!%co) {
3640                         next;
3641                 }
3642                 my $commit = $co{'id'};
3643                 if ($alternate) {
3644                         print "<tr class=\"dark\">\n";
3645                 } else {
3646                         print "<tr class=\"light\">\n";
3647                 }
3648                 $alternate ^= 1;
3649                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3650                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3651                       "<td>" .
3652                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3653                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3654                 my $comment = $co{'comment'};
3655                 foreach my $line (@$comment) {
3656                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3657                                 my $lead = esc_html($1) || "";
3658                                 $lead = chop_str($lead, 30, 10);
3659                                 my $match = esc_html($2) || "";
3660                                 my $trail = esc_html($3) || "";
3661                                 $trail = chop_str($trail, 30, 10);
3662                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3663                                 print chop_str($text, 80, 5) . "<br/>\n";
3664                         }
3665                 }
3666                 print "</td>\n" .
3667                       "<td class=\"link\">" .
3668                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3669                       " | " .
3670                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3671                 print "</td>\n" .
3672                       "</tr>\n";
3673         }
3674         if (defined $extra) {
3675                 print "<tr>\n" .
3676                       "<td colspan=\"3\">$extra</td>\n" .
3677                       "</tr>\n";
3678         }
3679         print "</table>\n";
3680 }
3681
3682 ## ======================================================================
3683 ## ======================================================================
3684 ## actions
3685
3686 sub git_project_list {
3687         my $order = $cgi->param('o');
3688         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3689                 die_error(undef, "Unknown order parameter");
3690         }
3691
3692         my @list = git_get_projects_list();
3693         if (!@list) {
3694                 die_error(undef, "No projects found");
3695         }
3696
3697         git_header_html();
3698         if (-f $home_text) {
3699                 print "<div class=\"index_include\">\n";
3700                 open (my $fd, $home_text);
3701                 print <$fd>;
3702                 close $fd;
3703                 print "</div>\n";
3704         }
3705         git_project_list_body(\@list, $order);
3706         git_footer_html();
3707 }
3708
3709 sub git_forks {
3710         my $order = $cgi->param('o');
3711         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3712                 die_error(undef, "Unknown order parameter");
3713         }
3714
3715         my @list = git_get_projects_list($project);
3716         if (!@list) {
3717                 die_error(undef, "No forks found");
3718         }
3719
3720         git_header_html();
3721         git_print_page_nav('','');
3722         git_print_header_div('summary', "$project forks");
3723         git_project_list_body(\@list, $order);
3724         git_footer_html();
3725 }
3726
3727 sub git_project_index {
3728         my @projects = git_get_projects_list($project);
3729
3730         print $cgi->header(
3731                 -type => 'text/plain',
3732                 -charset => 'utf-8',
3733                 -content_disposition => 'inline; filename="index.aux"');
3734
3735         foreach my $pr (@projects) {
3736                 if (!exists $pr->{'owner'}) {
3737                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3738                 }
3739
3740                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3741                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3742                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3743                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3744                 $path  =~ s/ /\+/g;
3745                 $owner =~ s/ /\+/g;
3746
3747                 print "$path $owner\n";
3748         }
3749 }
3750
3751 sub git_summary {
3752         my $descr = git_get_project_description($project) || "none";
3753         my %co = parse_commit("HEAD");
3754         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3755         my $head = $co{'id'};
3756
3757         my $owner = git_get_project_owner($project);
3758
3759         my $refs = git_get_references();
3760         # These get_*_list functions return one more to allow us to see if
3761         # there are more ...
3762         my @taglist  = git_get_tags_list(16);
3763         my @headlist = git_get_heads_list(16);
3764         my @forklist;
3765         my ($check_forks) = gitweb_check_feature('forks');
3766
3767         if ($check_forks) {
3768                 @forklist = git_get_projects_list($project);
3769         }
3770
3771         git_header_html();
3772         git_print_page_nav('summary','', $head);
3773
3774         print "<div class=\"title\">&nbsp;</div>\n";
3775         print "<table cellspacing=\"0\">\n" .
3776               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3777               "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3778         if (defined $cd{'rfc2822'}) {
3779                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3780         }
3781
3782         # use per project git URL list in $projectroot/$project/cloneurl
3783         # or make project git URL from git base URL and project name
3784         my $url_tag = "URL";
3785         my @url_list = git_get_project_url_list($project);
3786         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3787         foreach my $git_url (@url_list) {
3788                 next unless $git_url;
3789                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3790                 $url_tag = "";
3791         }
3792         print "</table>\n";
3793
3794         if (-s "$projectroot/$project/README.html") {
3795                 if (open my $fd, "$projectroot/$project/README.html") {
3796                         print "<div class=\"title\">readme</div>\n";
3797                         print $_ while (<$fd>);
3798                         close $fd;
3799                 }
3800         }
3801
3802         # we need to request one more than 16 (0..15) to check if
3803         # those 16 are all
3804         my @commitlist = $head ? parse_commits($head, 17) : ();
3805         if (@commitlist) {
3806                 git_print_header_div('shortlog');
3807                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3808                                   $#commitlist <=  15 ? undef :
3809                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3810         }
3811
3812         if (@taglist) {
3813                 git_print_header_div('tags');
3814                 git_tags_body(\@taglist, 0, 15,
3815                               $#taglist <=  15 ? undef :
3816                               $cgi->a({-href => href(action=>"tags")}, "..."));
3817         }
3818
3819         if (@headlist) {
3820                 git_print_header_div('heads');
3821                 git_heads_body(\@headlist, $head, 0, 15,
3822                                $#headlist <= 15 ? undef :
3823                                $cgi->a({-href => href(action=>"heads")}, "..."));
3824         }
3825
3826         if (@forklist) {
3827                 git_print_header_div('forks');
3828                 git_project_list_body(\@forklist, undef, 0, 15,
3829                                       $#forklist <= 15 ? undef :
3830                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3831                                       'noheader');
3832         }
3833
3834         git_footer_html();
3835 }
3836
3837 sub git_tag {
3838         my $head = git_get_head_hash($project);
3839         git_header_html();
3840         git_print_page_nav('','', $head,undef,$head);
3841         my %tag = parse_tag($hash);
3842
3843         if (! %tag) {
3844                 die_error(undef, "Unknown tag object");
3845         }
3846
3847         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3848         print "<div class=\"title_text\">\n" .
3849               "<table cellspacing=\"0\">\n" .
3850               "<tr>\n" .
3851               "<td>object</td>\n" .
3852               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3853                                $tag{'object'}) . "</td>\n" .
3854               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3855                                               $tag{'type'}) . "</td>\n" .
3856               "</tr>\n";
3857         if (defined($tag{'author'})) {
3858                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3859                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3860                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3861                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3862                         "</td></tr>\n";
3863         }
3864         print "</table>\n\n" .
3865               "</div>\n";
3866         print "<div class=\"page_body\">";
3867         my $comment = $tag{'comment'};
3868         foreach my $line (@$comment) {
3869                 chomp $line;
3870                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3871         }
3872         print "</div>\n";
3873         git_footer_html();
3874 }
3875
3876 sub git_blame2 {
3877         my $fd;
3878         my $ftype;
3879
3880         my ($have_blame) = gitweb_check_feature('blame');
3881         if (!$have_blame) {
3882                 die_error('403 Permission denied', "Permission denied");
3883         }
3884         die_error('404 Not Found', "File name not defined") if (!$file_name);
3885         $hash_base ||= git_get_head_hash($project);
3886         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3887         my %co = parse_commit($hash_base)
3888                 or die_error(undef, "Reading commit failed");
3889         if (!defined $hash) {
3890                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3891                         or die_error(undef, "Error looking up file");
3892         }
3893         $ftype = git_get_type($hash);
3894         if ($ftype !~ "blob") {
3895                 die_error('400 Bad Request', "Object is not a blob");
3896         }
3897         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3898               $file_name, $hash_base)
3899                 or die_error(undef, "Open git-blame failed");
3900         git_header_html();
3901         my $formats_nav =
3902                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3903                         "blob") .
3904                 " | " .
3905                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3906                         "history") .
3907                 " | " .
3908                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3909                         "HEAD");
3910         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3911         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3912         git_print_page_path($file_name, $ftype, $hash_base);
3913         my @rev_color = (qw(light2 dark2));
3914         my $num_colors = scalar(@rev_color);
3915         my $current_color = 0;
3916         my $last_rev;
3917         print <<HTML;
3918 <div class="page_body">
3919 <table class="blame">
3920 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3921 HTML
3922         my %metainfo = ();
3923         while (1) {
3924                 $_ = <$fd>;
3925                 last unless defined $_;
3926                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3927                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3928                 if (!exists $metainfo{$full_rev}) {
3929                         $metainfo{$full_rev} = {};
3930                 }
3931                 my $meta = $metainfo{$full_rev};
3932                 while (<$fd>) {
3933                         last if (s/^\t//);
3934                         if (/^(\S+) (.*)$/) {
3935                                 $meta->{$1} = $2;
3936                         }
3937                 }
3938                 my $data = $_;
3939                 chomp $data;
3940                 my $rev = substr($full_rev, 0, 8);
3941                 my $author = $meta->{'author'};
3942                 my %date = parse_date($meta->{'author-time'},
3943                                       $meta->{'author-tz'});
3944                 my $date = $date{'iso-tz'};
3945                 if ($group_size) {
3946                         $current_color = ++$current_color % $num_colors;
3947                 }
3948                 print "<tr class=\"$rev_color[$current_color]\">\n";
3949                 if ($group_size) {
3950                         print "<td class=\"sha1\"";
3951                         print " title=\"". esc_html($author) . ", $date\"";
3952                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3953                         print ">";
3954                         print $cgi->a({-href => href(action=>"commit",
3955                                                      hash=>$full_rev,
3956                                                      file_name=>$file_name)},
3957                                       esc_html($rev));
3958                         print "</td>\n";
3959                 }
3960                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3961                         or die_error(undef, "Open git-rev-parse failed");
3962                 my $parent_commit = <$dd>;
3963                 close $dd;
3964                 chomp($parent_commit);
3965                 my $blamed = href(action => 'blame',
3966                                   file_name => $meta->{'filename'},
3967                                   hash_base => $parent_commit);
3968                 print "<td class=\"linenr\">";
3969                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3970                                 -id => "l$lineno",
3971                                 -class => "linenr" },
3972                               esc_html($lineno));
3973                 print "</td>";
3974                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3975                 print "</tr>\n";
3976         }
3977         print "</table>\n";
3978         print "</div>";
3979         close $fd
3980                 or print "Reading blob failed\n";
3981         git_footer_html();
3982 }
3983
3984 sub git_blame {
3985         my $fd;
3986
3987         my ($have_blame) = gitweb_check_feature('blame');
3988         if (!$have_blame) {
3989                 die_error('403 Permission denied', "Permission denied");
3990         }
3991         die_error('404 Not Found', "File name not defined") if (!$file_name);
3992         $hash_base ||= git_get_head_hash($project);
3993         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3994         my %co = parse_commit($hash_base)
3995                 or die_error(undef, "Reading commit failed");
3996         if (!defined $hash) {
3997                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3998                         or die_error(undef, "Error lookup file");
3999         }
4000         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4001                 or die_error(undef, "Open git-annotate failed");
4002         git_header_html();
4003         my $formats_nav =
4004                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4005                         "blob") .
4006                 " | " .
4007                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4008                         "history") .
4009                 " | " .
4010                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4011                         "HEAD");
4012         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4013         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4014         git_print_page_path($file_name, 'blob', $hash_base);
4015         print "<div class=\"page_body\">\n";
4016         print <<HTML;
4017 <table class="blame">
4018   <tr>
4019     <th>Commit</th>
4020     <th>Age</th>
4021     <th>Author</th>
4022     <th>Line</th>
4023     <th>Data</th>
4024   </tr>
4025 HTML
4026         my @line_class = (qw(light dark));
4027         my $line_class_len = scalar (@line_class);
4028         my $line_class_num = $#line_class;
4029         while (my $line = <$fd>) {
4030                 my $long_rev;
4031                 my $short_rev;
4032                 my $author;
4033                 my $time;
4034                 my $lineno;
4035                 my $data;
4036                 my $age;
4037                 my $age_str;
4038                 my $age_class;
4039
4040                 chomp $line;
4041                 $line_class_num = ($line_class_num + 1) % $line_class_len;
4042
4043                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4044                         $long_rev = $1;
4045                         $author   = $2;
4046                         $time     = $3;
4047                         $lineno   = $4;
4048                         $data     = $5;
4049                 } else {
4050                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4051                         next;
4052                 }
4053                 $short_rev  = substr ($long_rev, 0, 8);
4054                 $age        = time () - $time;
4055                 $age_str    = age_string ($age);
4056                 $age_str    =~ s/ /&nbsp;/g;
4057                 $age_class  = age_class($age);
4058                 $author     = esc_html ($author);
4059                 $author     =~ s/ /&nbsp;/g;
4060
4061                 $data = untabify($data);
4062                 $data = esc_html ($data);
4063
4064                 print <<HTML;
4065   <tr class="$line_class[$line_class_num]">
4066     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4067     <td class="$age_class">$age_str</td>
4068     <td>$author</td>
4069     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4070     <td class="pre">$data</td>
4071   </tr>
4072 HTML
4073         } # while (my $line = <$fd>)
4074         print "</table>\n\n";
4075         close $fd
4076                 or print "Reading blob failed.\n";
4077         print "</div>";
4078         git_footer_html();
4079 }
4080
4081 sub git_tags {
4082         my $head = git_get_head_hash($project);
4083         git_header_html();
4084         git_print_page_nav('','', $head,undef,$head);
4085         git_print_header_div('summary', $project);
4086
4087         my @tagslist = git_get_tags_list();
4088         if (@tagslist) {
4089                 git_tags_body(\@tagslist);
4090         }
4091         git_footer_html();
4092 }
4093
4094 sub git_heads {
4095         my $head = git_get_head_hash($project);
4096         git_header_html();
4097         git_print_page_nav('','', $head,undef,$head);
4098         git_print_header_div('summary', $project);
4099
4100         my @headslist = git_get_heads_list();
4101         if (@headslist) {
4102                 git_heads_body(\@headslist, $head);
4103         }
4104         git_footer_html();
4105 }
4106
4107 sub git_blob_plain {
4108         my $expires;
4109
4110         if (!defined $hash) {
4111                 if (defined $file_name) {
4112                         my $base = $hash_base || git_get_head_hash($project);
4113                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4114                                 or die_error(undef, "Error lookup file");
4115                 } else {
4116                         die_error(undef, "No file name defined");
4117                 }
4118         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4119                 # blobs defined by non-textual hash id's can be cached
4120                 $expires = "+1d";
4121         }
4122
4123         my $type = shift;
4124         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4125                 or die_error(undef, "Couldn't cat $file_name, $hash");
4126
4127         $type ||= blob_mimetype($fd, $file_name);
4128
4129         # save as filename, even when no $file_name is given
4130         my $save_as = "$hash";
4131         if (defined $file_name) {
4132                 $save_as = $file_name;
4133         } elsif ($type =~ m/^text\//) {
4134                 $save_as .= '.txt';
4135         }
4136
4137         print $cgi->header(
4138                 -type => "$type",
4139                 -expires=>$expires,
4140                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4141         undef $/;
4142         binmode STDOUT, ':raw';
4143         print <$fd>;
4144         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4145         $/ = "\n";
4146         close $fd;
4147 }
4148
4149 sub git_blob {
4150         my $expires;
4151
4152         if (!defined $hash) {
4153                 if (defined $file_name) {
4154                         my $base = $hash_base || git_get_head_hash($project);
4155                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4156                                 or die_error(undef, "Error lookup file");
4157                 } else {
4158                         die_error(undef, "No file name defined");
4159                 }
4160         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4161                 # blobs defined by non-textual hash id's can be cached
4162                 $expires = "+1d";
4163         }
4164
4165         my ($have_blame) = gitweb_check_feature('blame');
4166         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4167                 or die_error(undef, "Couldn't cat $file_name, $hash");
4168         my $mimetype = blob_mimetype($fd, $file_name);
4169         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4170                 close $fd;
4171                 return git_blob_plain($mimetype);
4172         }
4173         # we can have blame only for text/* mimetype
4174         $have_blame &&= ($mimetype =~ m!^text/!);
4175
4176         git_header_html(undef, $expires);
4177         my $formats_nav = '';
4178         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4179                 if (defined $file_name) {
4180                         if ($have_blame) {
4181                                 $formats_nav .=
4182                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4183                                                                hash=>$hash, file_name=>$file_name)},
4184                                                 "blame") .
4185                                         " | ";
4186                         }
4187                         $formats_nav .=
4188                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4189                                                        hash=>$hash, file_name=>$file_name)},
4190                                         "history") .
4191                                 " | " .
4192                                 $cgi->a({-href => href(action=>"blob_plain",
4193                                                        hash=>$hash, file_name=>$file_name)},
4194                                         "raw") .
4195                                 " | " .
4196                                 $cgi->a({-href => href(action=>"blob",
4197                                                        hash_base=>"HEAD", file_name=>$file_name)},
4198                                         "HEAD");
4199                 } else {
4200                         $formats_nav .=
4201                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4202                 }
4203                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4204                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4205         } else {
4206                 print "<div class=\"page_nav\">\n" .
4207                       "<br/><br/></div>\n" .
4208                       "<div class=\"title\">$hash</div>\n";
4209         }
4210         git_print_page_path($file_name, "blob", $hash_base);
4211         print "<div class=\"page_body\">\n";
4212         if ($mimetype =~ m!^text/!) {
4213                 my $nr;
4214                 while (my $line = <$fd>) {
4215                         chomp $line;
4216                         $nr++;
4217                         $line = untabify($line);
4218                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4219                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4220                 }
4221         } elsif ($mimetype =~ m!^image/!) {
4222                 print qq!<img type="$mimetype"!;
4223                 if ($file_name) {
4224                         print qq! alt="$file_name" title="$file_name"!;
4225                 }
4226                 print qq! src="! .
4227                       href(action=>"blob_plain", hash=>$hash,
4228                            hash_base=>$hash_base, file_name=>$file_name) .
4229                       qq!" />\n!;
4230         }
4231         close $fd
4232                 or print "Reading blob failed.\n";
4233         print "</div>";
4234         git_footer_html();
4235 }
4236
4237 sub git_tree {
4238         if (!defined $hash_base) {
4239                 $hash_base = "HEAD";
4240         }
4241         if (!defined $hash) {
4242                 if (defined $file_name) {
4243                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4244                 } else {
4245                         $hash = $hash_base;
4246                 }
4247         }
4248         $/ = "\0";
4249         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4250                 or die_error(undef, "Open git-ls-tree failed");
4251         my @entries = map { chomp; $_ } <$fd>;
4252         close $fd or die_error(undef, "Reading tree failed");
4253         $/ = "\n";
4254
4255         my $refs = git_get_references();
4256         my $ref = format_ref_marker($refs, $hash_base);
4257         git_header_html();
4258         my $basedir = '';
4259         my ($have_blame) = gitweb_check_feature('blame');
4260         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4261                 my @views_nav = ();
4262                 if (defined $file_name) {
4263                         push @views_nav,
4264                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4265                                                        hash=>$hash, file_name=>$file_name)},
4266                                         "history"),
4267                                 $cgi->a({-href => href(action=>"tree",
4268                                                        hash_base=>"HEAD", file_name=>$file_name)},
4269                                         "HEAD"),
4270                 }
4271                 my $snapshot_links = format_snapshot_links($hash);
4272                 if (defined $snapshot_links) {
4273                         # FIXME: Should be available when we have no hash base as well.
4274                         push @views_nav, $snapshot_links;
4275                 }
4276                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4277                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4278         } else {
4279                 undef $hash_base;
4280                 print "<div class=\"page_nav\">\n";
4281                 print "<br/><br/></div>\n";
4282                 print "<div class=\"title\">$hash</div>\n";
4283         }
4284         if (defined $file_name) {
4285                 $basedir = $file_name;
4286                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4287                         $basedir .= '/';
4288                 }
4289         }
4290         git_print_page_path($file_name, 'tree', $hash_base);
4291         print "<div class=\"page_body\">\n";
4292         print "<table cellspacing=\"0\">\n";
4293         my $alternate = 1;
4294         # '..' (top directory) link if possible
4295         if (defined $hash_base &&
4296             defined $file_name && $file_name =~ m![^/]+$!) {
4297                 if ($alternate) {
4298                         print "<tr class=\"dark\">\n";
4299                 } else {
4300                         print "<tr class=\"light\">\n";
4301                 }
4302                 $alternate ^= 1;
4303
4304                 my $up = $file_name;
4305                 $up =~ s!/?[^/]+$!!;
4306                 undef $up unless $up;
4307                 # based on git_print_tree_entry
4308                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4309                 print '<td class="list">';
4310                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4311                                              file_name=>$up)},
4312                               "..");
4313                 print "</td>\n";
4314                 print "<td class=\"link\"></td>\n";
4315
4316                 print "</tr>\n";
4317         }
4318         foreach my $line (@entries) {
4319                 my %t = parse_ls_tree_line($line, -z => 1);
4320
4321                 if ($alternate) {
4322                         print "<tr class=\"dark\">\n";
4323                 } else {
4324                         print "<tr class=\"light\">\n";
4325                 }
4326                 $alternate ^= 1;
4327
4328                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4329
4330                 print "</tr>\n";
4331         }
4332         print "</table>\n" .
4333               "</div>";
4334         git_footer_html();
4335 }
4336
4337 sub git_snapshot {
4338         my @supported_fmts = gitweb_check_feature('snapshot');
4339         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4340
4341         my $format = $cgi->param('sf');
4342         if (!@supported_fmts) {
4343                 die_error('403 Permission denied', "Permission denied");
4344         }
4345         # default to first supported snapshot format
4346         $format ||= $supported_fmts[0];
4347         if ($format !~ m/^[a-z0-9]+$/) {
4348                 die_error(undef, "Invalid snapshot format parameter");
4349         } elsif (!exists($known_snapshot_formats{$format})) {
4350                 die_error(undef, "Unknown snapshot format");
4351         } elsif (!grep($_ eq $format, @supported_fmts)) {
4352                 die_error(undef, "Unsupported snapshot format");
4353         }
4354
4355         if (!defined $hash) {
4356                 $hash = git_get_head_hash($project);
4357         }
4358
4359         my $git_command = git_cmd_str();
4360         my $name = $project;
4361         $name =~ s,([^/])/*\.git$,$1,;
4362         $name = basename($name);
4363         my $filename = to_utf8($name);
4364         $name =~ s/\047/\047\\\047\047/g;
4365         my $cmd;
4366         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4367         $cmd = "$git_command archive " .
4368                 "--format=$known_snapshot_formats{$format}{'format'} " .
4369                 "--prefix=\'$name\'/ $hash";
4370         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4371                 $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4372         }
4373
4374         print $cgi->header(
4375                 -type => $known_snapshot_formats{$format}{'type'},
4376                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4377                 -status => '200 OK');
4378
4379         open my $fd, "-|", $cmd
4380                 or die_error(undef, "Execute git-archive failed");
4381         binmode STDOUT, ':raw';
4382         print <$fd>;
4383         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4384         close $fd;
4385 }
4386
4387 sub git_log {
4388         my $head = git_get_head_hash($project);
4389         if (!defined $hash) {
4390                 $hash = $head;
4391         }
4392         if (!defined $page) {
4393                 $page = 0;
4394         }
4395         my $refs = git_get_references();
4396
4397         my @commitlist = parse_commits($hash, 101, (100 * $page));
4398
4399         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4400
4401         git_header_html();
4402         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4403
4404         if (!@commitlist) {
4405                 my %co = parse_commit($hash);
4406
4407                 git_print_header_div('summary', $project);
4408                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4409         }
4410         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4411         for (my $i = 0; $i <= $to; $i++) {
4412                 my %co = %{$commitlist[$i]};
4413                 next if !%co;
4414                 my $commit = $co{'id'};
4415                 my $ref = format_ref_marker($refs, $commit);
4416                 my %ad = parse_date($co{'author_epoch'});
4417                 git_print_header_div('commit',
4418                                "<span class=\"age\">$co{'age_string'}</span>" .
4419                                esc_html($co{'title'}) . $ref,
4420                                $commit);
4421                 print "<div class=\"title_text\">\n" .
4422                       "<div class=\"log_link\">\n" .
4423                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4424                       " | " .
4425                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4426                       " | " .
4427                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4428                       "<br/>\n" .
4429                       "</div>\n" .
4430                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4431                       "</div>\n";
4432
4433                 print "<div class=\"log_body\">\n";
4434                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4435                 print "</div>\n";
4436         }
4437         if ($#commitlist >= 100) {
4438                 print "<div class=\"page_nav\">\n";
4439                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4440                                -accesskey => "n", -title => "Alt-n"}, "next");
4441                 print "</div>\n";
4442         }
4443         git_footer_html();
4444 }
4445
4446 sub git_commit {
4447         $hash ||= $hash_base || "HEAD";
4448         my %co = parse_commit($hash);
4449         if (!%co) {
4450                 die_error(undef, "Unknown commit object");
4451         }
4452         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4453         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4454
4455         my $parent  = $co{'parent'};
4456         my $parents = $co{'parents'}; # listref
4457
4458         # we need to prepare $formats_nav before any parameter munging
4459         my $formats_nav;
4460         if (!defined $parent) {
4461                 # --root commitdiff
4462                 $formats_nav .= '(initial)';
4463         } elsif (@$parents == 1) {
4464                 # single parent commit
4465                 $formats_nav .=
4466                         '(parent: ' .
4467                         $cgi->a({-href => href(action=>"commit",
4468                                                hash=>$parent)},
4469                                 esc_html(substr($parent, 0, 7))) .
4470                         ')';
4471         } else {
4472                 # merge commit
4473                 $formats_nav .=
4474                         '(merge: ' .
4475                         join(' ', map {
4476                                 $cgi->a({-href => href(action=>"commit",
4477                                                        hash=>$_)},
4478                                         esc_html(substr($_, 0, 7)));
4479                         } @$parents ) .
4480                         ')';
4481         }
4482
4483         if (!defined $parent) {
4484                 $parent = "--root";
4485         }
4486         my @difftree;
4487         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4488                 @diff_opts,
4489                 (@$parents <= 1 ? $parent : '-c'),
4490                 $hash, "--"
4491                 or die_error(undef, "Open git-diff-tree failed");
4492         @difftree = map { chomp; $_ } <$fd>;
4493         close $fd or die_error(undef, "Reading git-diff-tree failed");
4494
4495         # non-textual hash id's can be cached
4496         my $expires;
4497         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4498                 $expires = "+1d";
4499         }
4500         my $refs = git_get_references();
4501         my $ref = format_ref_marker($refs, $co{'id'});
4502
4503         git_header_html(undef, $expires);
4504         git_print_page_nav('commit', '',
4505                            $hash, $co{'tree'}, $hash,
4506                            $formats_nav);
4507
4508         if (defined $co{'parent'}) {
4509                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4510         } else {
4511                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4512         }
4513         print "<div class=\"title_text\">\n" .
4514               "<table cellspacing=\"0\">\n";
4515         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4516               "<tr>" .
4517               "<td></td><td> $ad{'rfc2822'}";
4518         if ($ad{'hour_local'} < 6) {
4519                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4520                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4521         } else {
4522                 printf(" (%02d:%02d %s)",
4523                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4524         }
4525         print "</td>" .
4526               "</tr>\n";
4527         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4528         print "<tr><td></td><td> $cd{'rfc2822'}" .
4529               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4530               "</td></tr>\n";
4531         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4532         print "<tr>" .
4533               "<td>tree</td>" .
4534               "<td class=\"sha1\">" .
4535               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4536                        class => "list"}, $co{'tree'}) .
4537               "</td>" .
4538               "<td class=\"link\">" .
4539               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4540                       "tree");
4541         my $snapshot_links = format_snapshot_links($hash);
4542         if (defined $snapshot_links) {
4543                 print " | " . $snapshot_links;
4544         }
4545         print "</td>" .
4546               "</tr>\n";
4547
4548         foreach my $par (@$parents) {
4549                 print "<tr>" .
4550                       "<td>parent</td>" .
4551                       "<td class=\"sha1\">" .
4552                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4553                                class => "list"}, $par) .
4554                       "</td>" .
4555                       "<td class=\"link\">" .
4556                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4557                       " | " .
4558                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4559                       "</td>" .
4560                       "</tr>\n";
4561         }
4562         print "</table>".
4563               "</div>\n";
4564
4565         print "<div class=\"page_body\">\n";
4566         git_print_log($co{'comment'});
4567         print "</div>\n";
4568
4569         git_difftree_body(\@difftree, $hash, @$parents);
4570
4571         git_footer_html();
4572 }
4573
4574 sub git_object {
4575         # object is defined by:
4576         # - hash or hash_base alone
4577         # - hash_base and file_name
4578         my $type;
4579
4580         # - hash or hash_base alone
4581         if ($hash || ($hash_base && !defined $file_name)) {
4582                 my $object_id = $hash || $hash_base;
4583
4584                 my $git_command = git_cmd_str();
4585                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4586                         or die_error('404 Not Found', "Object does not exist");
4587                 $type = <$fd>;
4588                 chomp $type;
4589                 close $fd
4590                         or die_error('404 Not Found', "Object does not exist");
4591
4592         # - hash_base and file_name
4593         } elsif ($hash_base && defined $file_name) {
4594                 $file_name =~ s,/+$,,;
4595
4596                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4597                         or die_error('404 Not Found', "Base object does not exist");
4598
4599                 # here errors should not hapen
4600                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4601                         or die_error(undef, "Open git-ls-tree failed");
4602                 my $line = <$fd>;
4603                 close $fd;
4604
4605                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4606                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4607                         die_error('404 Not Found', "File or directory for given base does not exist");
4608                 }
4609                 $type = $2;
4610                 $hash = $3;
4611         } else {
4612                 die_error('404 Not Found', "Not enough information to find object");
4613         }
4614
4615         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4616                                           hash=>$hash, hash_base=>$hash_base,
4617                                           file_name=>$file_name),
4618                              -status => '302 Found');
4619 }
4620
4621 sub git_blobdiff {
4622         my $format = shift || 'html';
4623
4624         my $fd;
4625         my @difftree;
4626         my %diffinfo;
4627         my $expires;
4628
4629         # preparing $fd and %diffinfo for git_patchset_body
4630         # new style URI
4631         if (defined $hash_base && defined $hash_parent_base) {
4632                 if (defined $file_name) {
4633                         # read raw output
4634                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4635                                 $hash_parent_base, $hash_base,
4636                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4637                                 or die_error(undef, "Open git-diff-tree failed");
4638                         @difftree = map { chomp; $_ } <$fd>;
4639                         close $fd
4640                                 or die_error(undef, "Reading git-diff-tree failed");
4641                         @difftree
4642                                 or die_error('404 Not Found', "Blob diff not found");
4643
4644                 } elsif (defined $hash &&
4645                          $hash =~ /[0-9a-fA-F]{40}/) {
4646                         # try to find filename from $hash
4647
4648                         # read filtered raw output
4649                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4650                                 $hash_parent_base, $hash_base, "--"
4651                                 or die_error(undef, "Open git-diff-tree failed");
4652                         @difftree =
4653                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4654                                 # $hash == to_id
4655                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4656                                 map { chomp; $_ } <$fd>;
4657                         close $fd
4658                                 or die_error(undef, "Reading git-diff-tree failed");
4659                         @difftree
4660                                 or die_error('404 Not Found', "Blob diff not found");
4661
4662                 } else {
4663                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4664                 }
4665
4666                 if (@difftree > 1) {
4667                         die_error('404 Not Found', "Ambiguous blob diff specification");
4668                 }
4669
4670                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4671                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4672                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4673
4674                 $hash_parent ||= $diffinfo{'from_id'};
4675                 $hash        ||= $diffinfo{'to_id'};
4676
4677                 # non-textual hash id's can be cached
4678                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4679                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4680                         $expires = '+1d';
4681                 }
4682
4683                 # open patch output
4684                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4685                         '-p', ($format eq 'html' ? "--full-index" : ()),
4686                         $hash_parent_base, $hash_base,
4687                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4688                         or die_error(undef, "Open git-diff-tree failed");
4689         }
4690
4691         # old/legacy style URI
4692         if (!%diffinfo && # if new style URI failed
4693             defined $hash && defined $hash_parent) {
4694                 # fake git-diff-tree raw output
4695                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4696                 $diffinfo{'from_id'} = $hash_parent;
4697                 $diffinfo{'to_id'}   = $hash;
4698                 if (defined $file_name) {
4699                         if (defined $file_parent) {
4700                                 $diffinfo{'status'} = '2';
4701                                 $diffinfo{'from_file'} = $file_parent;
4702                                 $diffinfo{'to_file'}   = $file_name;
4703                         } else { # assume not renamed
4704                                 $diffinfo{'status'} = '1';
4705                                 $diffinfo{'from_file'} = $file_name;
4706                                 $diffinfo{'to_file'}   = $file_name;
4707                         }
4708                 } else { # no filename given
4709                         $diffinfo{'status'} = '2';
4710                         $diffinfo{'from_file'} = $hash_parent;
4711                         $diffinfo{'to_file'}   = $hash;
4712                 }
4713
4714                 # non-textual hash id's can be cached
4715                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4716                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4717                         $expires = '+1d';
4718                 }
4719
4720                 # open patch output
4721                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4722                         '-p', ($format eq 'html' ? "--full-index" : ()),
4723                         $hash_parent, $hash, "--"
4724                         or die_error(undef, "Open git-diff failed");
4725         } else  {
4726                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4727                         unless %diffinfo;
4728         }
4729
4730         # header
4731         if ($format eq 'html') {
4732                 my $formats_nav =
4733                         $cgi->a({-href => href(action=>"blobdiff_plain",
4734                                                hash=>$hash, hash_parent=>$hash_parent,
4735                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4736                                                file_name=>$file_name, file_parent=>$file_parent)},
4737                                 "raw");
4738                 git_header_html(undef, $expires);
4739                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4740                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4741                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4742                 } else {
4743                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4744                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4745                 }
4746                 if (defined $file_name) {
4747                         git_print_page_path($file_name, "blob", $hash_base);
4748                 } else {
4749                         print "<div class=\"page_path\"></div>\n";
4750                 }
4751
4752         } elsif ($format eq 'plain') {
4753                 print $cgi->header(
4754                         -type => 'text/plain',
4755                         -charset => 'utf-8',
4756                         -expires => $expires,
4757                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4758
4759                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4760
4761         } else {
4762                 die_error(undef, "Unknown blobdiff format");
4763         }
4764
4765         # patch
4766         if ($format eq 'html') {
4767                 print "<div class=\"page_body\">\n";
4768
4769                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4770                 close $fd;
4771
4772                 print "</div>\n"; # class="page_body"
4773                 git_footer_html();
4774
4775         } else {
4776                 while (my $line = <$fd>) {
4777                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4778                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4779
4780                         print $line;
4781
4782                         last if $line =~ m!^\+\+\+!;
4783                 }
4784                 local $/ = undef;
4785                 print <$fd>;
4786                 close $fd;
4787         }
4788 }
4789
4790 sub git_blobdiff_plain {
4791         git_blobdiff('plain');
4792 }
4793
4794 sub git_commitdiff {
4795         my $format = shift || 'html';
4796         $hash ||= $hash_base || "HEAD";
4797         my %co = parse_commit($hash);
4798         if (!%co) {
4799                 die_error(undef, "Unknown commit object");
4800         }
4801
4802         # choose format for commitdiff for merge
4803         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4804                 $hash_parent = '--cc';
4805         }
4806         # we need to prepare $formats_nav before almost any parameter munging
4807         my $formats_nav;
4808         if ($format eq 'html') {
4809                 $formats_nav =
4810                         $cgi->a({-href => href(action=>"commitdiff_plain",
4811                                                hash=>$hash, hash_parent=>$hash_parent)},
4812                                 "raw");
4813
4814                 if (defined $hash_parent &&
4815                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4816                         # commitdiff with two commits given
4817                         my $hash_parent_short = $hash_parent;
4818                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4819                                 $hash_parent_short = substr($hash_parent, 0, 7);
4820                         }
4821                         $formats_nav .=
4822                                 ' (from';
4823                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4824                                 if ($co{'parents'}[$i] eq $hash_parent) {
4825                                         $formats_nav .= ' parent ' . ($i+1);
4826                                         last;
4827                                 }
4828                         }
4829                         $formats_nav .= ': ' .
4830                                 $cgi->a({-href => href(action=>"commitdiff",
4831                                                        hash=>$hash_parent)},
4832                                         esc_html($hash_parent_short)) .
4833                                 ')';
4834                 } elsif (!$co{'parent'}) {
4835                         # --root commitdiff
4836                         $formats_nav .= ' (initial)';
4837                 } elsif (scalar @{$co{'parents'}} == 1) {
4838                         # single parent commit
4839                         $formats_nav .=
4840                                 ' (parent: ' .
4841                                 $cgi->a({-href => href(action=>"commitdiff",
4842                                                        hash=>$co{'parent'})},
4843                                         esc_html(substr($co{'parent'}, 0, 7))) .
4844                                 ')';
4845                 } else {
4846                         # merge commit
4847                         if ($hash_parent eq '--cc') {
4848                                 $formats_nav .= ' | ' .
4849                                         $cgi->a({-href => href(action=>"commitdiff",
4850                                                                hash=>$hash, hash_parent=>'-c')},
4851                                                 'combined');
4852                         } else { # $hash_parent eq '-c'
4853                                 $formats_nav .= ' | ' .
4854                                         $cgi->a({-href => href(action=>"commitdiff",
4855                                                                hash=>$hash, hash_parent=>'--cc')},
4856                                                 'compact');
4857                         }
4858                         $formats_nav .=
4859                                 ' (merge: ' .
4860                                 join(' ', map {
4861                                         $cgi->a({-href => href(action=>"commitdiff",
4862                                                                hash=>$_)},
4863                                                 esc_html(substr($_, 0, 7)));
4864                                 } @{$co{'parents'}} ) .
4865                                 ')';
4866                 }
4867         }
4868
4869         my $hash_parent_param = $hash_parent;
4870         if (!defined $hash_parent_param) {
4871                 # --cc for multiple parents, --root for parentless
4872                 $hash_parent_param =
4873                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4874         }
4875
4876         # read commitdiff
4877         my $fd;
4878         my @difftree;
4879         if ($format eq 'html') {
4880                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4881                         "--no-commit-id", "--patch-with-raw", "--full-index",
4882                         $hash_parent_param, $hash, "--"
4883                         or die_error(undef, "Open git-diff-tree failed");
4884
4885                 while (my $line = <$fd>) {
4886                         chomp $line;
4887                         # empty line ends raw part of diff-tree output
4888                         last unless $line;
4889                         push @difftree, scalar parse_difftree_raw_line($line);
4890                 }
4891
4892         } elsif ($format eq 'plain') {
4893                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4894                         '-p', $hash_parent_param, $hash, "--"
4895                         or die_error(undef, "Open git-diff-tree failed");
4896
4897         } else {
4898                 die_error(undef, "Unknown commitdiff format");
4899         }
4900
4901         # non-textual hash id's can be cached
4902         my $expires;
4903         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4904                 $expires = "+1d";
4905         }
4906
4907         # write commit message
4908         if ($format eq 'html') {
4909                 my $refs = git_get_references();
4910                 my $ref = format_ref_marker($refs, $co{'id'});
4911
4912                 git_header_html(undef, $expires);
4913                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4914                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4915                 git_print_authorship(\%co);
4916                 print "<div class=\"page_body\">\n";
4917                 if (@{$co{'comment'}} > 1) {
4918                         print "<div class=\"log\">\n";
4919                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4920                         print "</div>\n"; # class="log"
4921                 }
4922
4923         } elsif ($format eq 'plain') {
4924                 my $refs = git_get_references("tags");
4925                 my $tagname = git_get_rev_name_tags($hash);
4926                 my $filename = basename($project) . "-$hash.patch";
4927
4928                 print $cgi->header(
4929                         -type => 'text/plain',
4930                         -charset => 'utf-8',
4931                         -expires => $expires,
4932                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4933                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4934                 print <<TEXT;
4935 From: $co{'author'}
4936 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4937 Subject: $co{'title'}
4938 TEXT
4939                 print "X-Git-Tag: $tagname\n" if $tagname;
4940                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4941
4942                 foreach my $line (@{$co{'comment'}}) {
4943                         print "$line\n";
4944                 }
4945                 print "---\n\n";
4946         }
4947
4948         # write patch
4949         if ($format eq 'html') {
4950                 my $use_parents = !defined $hash_parent ||
4951                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4952                 git_difftree_body(\@difftree, $hash,
4953                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4954                 print "<br/>\n";
4955
4956                 git_patchset_body($fd, \@difftree, $hash,
4957                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4958                 close $fd;
4959                 print "</div>\n"; # class="page_body"
4960                 git_footer_html();
4961
4962         } elsif ($format eq 'plain') {
4963                 local $/ = undef;
4964                 print <$fd>;
4965                 close $fd
4966                         or print "Reading git-diff-tree failed\n";
4967         }
4968 }
4969
4970 sub git_commitdiff_plain {
4971         git_commitdiff('plain');
4972 }
4973
4974 sub git_history {
4975         if (!defined $hash_base) {
4976                 $hash_base = git_get_head_hash($project);
4977         }
4978         if (!defined $page) {
4979                 $page = 0;
4980         }
4981         my $ftype;
4982         my %co = parse_commit($hash_base);
4983         if (!%co) {
4984                 die_error(undef, "Unknown commit object");
4985         }
4986
4987         my $refs = git_get_references();
4988         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4989
4990         if (!defined $hash && defined $file_name) {
4991                 $hash = git_get_hash_by_path($hash_base, $file_name);
4992         }
4993         if (defined $hash) {
4994                 $ftype = git_get_type($hash);
4995         }
4996
4997         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4998
4999         my $paging_nav = '';
5000         if ($page > 0) {
5001                 $paging_nav .=
5002                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5003                                                file_name=>$file_name)},
5004                                 "first");
5005                 $paging_nav .= " &sdot; " .
5006                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5007                                                file_name=>$file_name, page=>$page-1),
5008                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5009         } else {
5010                 $paging_nav .= "first";
5011                 $paging_nav .= " &sdot; prev";
5012         }
5013         if ($#commitlist >= 100) {
5014                 $paging_nav .= " &sdot; " .
5015                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5016                                                file_name=>$file_name, page=>$page+1),
5017                                  -accesskey => "n", -title => "Alt-n"}, "next");
5018         } else {
5019                 $paging_nav .= " &sdot; next";
5020         }
5021         my $next_link = '';
5022         if ($#commitlist >= 100) {
5023                 $next_link =
5024                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5025                                                file_name=>$file_name, page=>$page+1),
5026                                  -accesskey => "n", -title => "Alt-n"}, "next");
5027         }
5028
5029         git_header_html();
5030         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5031         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5032         git_print_page_path($file_name, $ftype, $hash_base);
5033
5034         git_history_body(\@commitlist, 0, 99,
5035                          $refs, $hash_base, $ftype, $next_link);
5036
5037         git_footer_html();
5038 }
5039
5040 sub git_search {
5041         my ($have_search) = gitweb_check_feature('search');
5042         if (!$have_search) {
5043                 die_error('403 Permission denied', "Permission denied");
5044         }
5045         if (!defined $searchtext) {
5046                 die_error(undef, "Text field empty");
5047         }
5048         if (!defined $hash) {
5049                 $hash = git_get_head_hash($project);
5050         }
5051         my %co = parse_commit($hash);
5052         if (!%co) {
5053                 die_error(undef, "Unknown commit object");
5054         }
5055         if (!defined $page) {
5056                 $page = 0;
5057         }
5058
5059         $searchtype ||= 'commit';
5060         if ($searchtype eq 'pickaxe') {
5061                 # pickaxe may take all resources of your box and run for several minutes
5062                 # with every query - so decide by yourself how public you make this feature
5063                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5064                 if (!$have_pickaxe) {
5065                         die_error('403 Permission denied', "Permission denied");
5066                 }
5067         }
5068         if ($searchtype eq 'grep') {
5069                 my ($have_grep) = gitweb_check_feature('grep');
5070                 if (!$have_grep) {
5071                         die_error('403 Permission denied', "Permission denied");
5072                 }
5073         }
5074
5075         git_header_html();
5076
5077         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5078                 my $greptype;
5079                 if ($searchtype eq 'commit') {
5080                         $greptype = "--grep=";
5081                 } elsif ($searchtype eq 'author') {
5082                         $greptype = "--author=";
5083                 } elsif ($searchtype eq 'committer') {
5084                         $greptype = "--committer=";
5085                 }
5086                 $greptype .= $search_regexp;
5087                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5088
5089                 my $paging_nav = '';
5090                 if ($page > 0) {
5091                         $paging_nav .=
5092                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5093                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
5094                                         "first");
5095                         $paging_nav .= " &sdot; " .
5096                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5097                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5098                                                        page=>$page-1),
5099                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5100                 } else {
5101                         $paging_nav .= "first";
5102                         $paging_nav .= " &sdot; prev";
5103                 }
5104                 if ($#commitlist >= 100) {
5105                         $paging_nav .= " &sdot; " .
5106                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5107                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5108                                                        page=>$page+1),
5109                                          -accesskey => "n", -title => "Alt-n"}, "next");
5110                 } else {
5111                         $paging_nav .= " &sdot; next";
5112                 }
5113                 my $next_link = '';
5114                 if ($#commitlist >= 100) {
5115                         $next_link =
5116                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5117                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5118                                                        page=>$page+1),
5119                                          -accesskey => "n", -title => "Alt-n"}, "next");
5120                 }
5121
5122                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5123                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5124                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5125         }
5126
5127         if ($searchtype eq 'pickaxe') {
5128                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5129                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5130
5131                 print "<table cellspacing=\"0\">\n";
5132                 my $alternate = 1;
5133                 $/ = "\n";
5134                 my $git_command = git_cmd_str();
5135                 my $searchqtext = $searchtext;
5136                 $searchqtext =~ s/'/'\\''/;
5137                 open my $fd, "-|", "$git_command rev-list $hash | " .
5138                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5139                 undef %co;
5140                 my @files;
5141                 while (my $line = <$fd>) {
5142                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5143                                 my %set;
5144                                 $set{'file'} = $6;
5145                                 $set{'from_id'} = $3;
5146                                 $set{'to_id'} = $4;
5147                                 $set{'id'} = $set{'to_id'};
5148                                 if ($set{'id'} =~ m/0{40}/) {
5149                                         $set{'id'} = $set{'from_id'};
5150                                 }
5151                                 if ($set{'id'} =~ m/0{40}/) {
5152                                         next;
5153                                 }
5154                                 push @files, \%set;
5155                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5156                                 if (%co) {
5157                                         if ($alternate) {
5158                                                 print "<tr class=\"dark\">\n";
5159                                         } else {
5160                                                 print "<tr class=\"light\">\n";
5161                                         }
5162                                         $alternate ^= 1;
5163                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5164                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5165                                               "<td>" .
5166                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5167                                                       -class => "list subject"},
5168                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5169                                         while (my $setref = shift @files) {
5170                                                 my %set = %$setref;
5171                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5172                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5173                                                               -class => "list"},
5174                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5175                                                       "<br/>\n";
5176                                         }
5177                                         print "</td>\n" .
5178                                               "<td class=\"link\">" .
5179                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5180                                               " | " .
5181                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5182                                         print "</td>\n" .
5183                                               "</tr>\n";
5184                                 }
5185                                 %co = parse_commit($1);
5186                         }
5187                 }
5188                 close $fd;
5189
5190                 print "</table>\n";
5191         }
5192
5193         if ($searchtype eq 'grep') {
5194                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5195                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5196
5197                 print "<table cellspacing=\"0\">\n";
5198                 my $alternate = 1;
5199                 my $matches = 0;
5200                 $/ = "\n";
5201                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5202                 my $lastfile = '';
5203                 while (my $line = <$fd>) {
5204                         chomp $line;
5205                         my ($file, $lno, $ltext, $binary);
5206                         last if ($matches++ > 1000);
5207                         if ($line =~ /^Binary file (.+) matches$/) {
5208                                 $file = $1;
5209                                 $binary = 1;
5210                         } else {
5211                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5212                         }
5213                         if ($file ne $lastfile) {
5214                                 $lastfile and print "</td></tr>\n";
5215                                 if ($alternate++) {
5216                                         print "<tr class=\"dark\">\n";
5217                                 } else {
5218                                         print "<tr class=\"light\">\n";
5219                                 }
5220                                 print "<td class=\"list\">".
5221                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5222                                                                file_name=>"$file"),
5223                                                 -class => "list"}, esc_path($file));
5224                                 print "</td><td>\n";
5225                                 $lastfile = $file;
5226                         }
5227                         if ($binary) {
5228                                 print "<div class=\"binary\">Binary file</div>\n";
5229                         } else {
5230                                 $ltext = untabify($ltext);
5231                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5232                                         $ltext = esc_html($1, -nbsp=>1);
5233                                         $ltext .= '<span class="match">';
5234                                         $ltext .= esc_html($2, -nbsp=>1);
5235                                         $ltext .= '</span>';
5236                                         $ltext .= esc_html($3, -nbsp=>1);
5237                                 } else {
5238                                         $ltext = esc_html($ltext, -nbsp=>1);
5239                                 }
5240                                 print "<div class=\"pre\">" .
5241                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5242                                                                file_name=>"$file").'#l'.$lno,
5243                                                 -class => "linenr"}, sprintf('%4i', $lno))
5244                                         . ' ' .  $ltext . "</div>\n";
5245                         }
5246                 }
5247                 if ($lastfile) {
5248                         print "</td></tr>\n";
5249                         if ($matches > 1000) {
5250                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5251                         }
5252                 } else {
5253                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5254                 }
5255                 close $fd;
5256
5257                 print "</table>\n";
5258         }
5259         git_footer_html();
5260 }
5261
5262 sub git_search_help {
5263         git_header_html();
5264         git_print_page_nav('','', $hash,$hash,$hash);
5265         print <<EOT;
5266 <dl>
5267 <dt><b>commit</b></dt>
5268 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5269 EOT
5270         my ($have_grep) = gitweb_check_feature('grep');
5271         if ($have_grep) {
5272                 print <<EOT;
5273 <dt><b>grep</b></dt>
5274 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5275     a different one) are searched for the given
5276 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5277 (POSIX extended) and the matches are listed. On large
5278 trees, this search can take a while and put some strain on the server, so please use it with
5279 some consideration.</dd>
5280 EOT
5281         }
5282         print <<EOT;
5283 <dt><b>author</b></dt>
5284 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5285 <dt><b>committer</b></dt>
5286 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5287 EOT
5288         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5289         if ($have_pickaxe) {
5290                 print <<EOT;
5291 <dt><b>pickaxe</b></dt>
5292 <dd>All commits that caused the string to appear or disappear from any file (changes that
5293 added, removed or "modified" the string) will be listed. This search can take a while and
5294 takes a lot of strain on the server, so please use it wisely.</dd>
5295 EOT
5296         }
5297         print "</dl>\n";
5298         git_footer_html();
5299 }
5300
5301 sub git_shortlog {
5302         my $head = git_get_head_hash($project);
5303         if (!defined $hash) {
5304                 $hash = $head;
5305         }
5306         if (!defined $page) {
5307                 $page = 0;
5308         }
5309         my $refs = git_get_references();
5310
5311         my @commitlist = parse_commits($hash, 101, (100 * $page));
5312
5313         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5314         my $next_link = '';
5315         if ($#commitlist >= 100) {
5316                 $next_link =
5317                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5318                                  -accesskey => "n", -title => "Alt-n"}, "next");
5319         }
5320
5321         git_header_html();
5322         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5323         git_print_header_div('summary', $project);
5324
5325         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5326
5327         git_footer_html();
5328 }
5329
5330 ## ......................................................................
5331 ## feeds (RSS, Atom; OPML)
5332
5333 sub git_feed {
5334         my $format = shift || 'atom';
5335         my ($have_blame) = gitweb_check_feature('blame');
5336
5337         # Atom: http://www.atomenabled.org/developers/syndication/
5338         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5339         if ($format ne 'rss' && $format ne 'atom') {
5340                 die_error(undef, "Unknown web feed format");
5341         }
5342
5343         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5344         my $head = $hash || 'HEAD';
5345         my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5346
5347         my %latest_commit;
5348         my %latest_date;
5349         my $content_type = "application/$format+xml";
5350         if (defined $cgi->http('HTTP_ACCEPT') &&
5351                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5352                 # browser (feed reader) prefers text/xml
5353                 $content_type = 'text/xml';
5354         }
5355         if (defined($commitlist[0])) {
5356                 %latest_commit = %{$commitlist[0]};
5357                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5358                 print $cgi->header(
5359                         -type => $content_type,
5360                         -charset => 'utf-8',
5361                         -last_modified => $latest_date{'rfc2822'});
5362         } else {
5363                 print $cgi->header(
5364                         -type => $content_type,
5365                         -charset => 'utf-8');
5366         }
5367
5368         # Optimization: skip generating the body if client asks only
5369         # for Last-Modified date.
5370         return if ($cgi->request_method() eq 'HEAD');
5371
5372         # header variables
5373         my $title = "$site_name - $project/$action";
5374         my $feed_type = 'log';
5375         if (defined $hash) {
5376                 $title .= " - '$hash'";
5377                 $feed_type = 'branch log';
5378                 if (defined $file_name) {
5379                         $title .= " :: $file_name";
5380                         $feed_type = 'history';
5381                 }
5382         } elsif (defined $file_name) {
5383                 $title .= " - $file_name";
5384                 $feed_type = 'history';
5385         }
5386         $title .= " $feed_type";
5387         my $descr = git_get_project_description($project);
5388         if (defined $descr) {
5389                 $descr = esc_html($descr);
5390         } else {
5391                 $descr = "$project " .
5392                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5393                          " feed";
5394         }
5395         my $owner = git_get_project_owner($project);
5396         $owner = esc_html($owner);
5397
5398         #header
5399         my $alt_url;
5400         if (defined $file_name) {
5401                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5402         } elsif (defined $hash) {
5403                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5404         } else {
5405                 $alt_url = href(-full=>1, action=>"summary");
5406         }
5407         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5408         if ($format eq 'rss') {
5409                 print <<XML;
5410 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5411 <channel>
5412 XML
5413                 print "<title>$title</title>\n" .
5414                       "<link>$alt_url</link>\n" .
5415                       "<description>$descr</description>\n" .
5416                       "<language>en</language>\n";
5417         } elsif ($format eq 'atom') {
5418                 print <<XML;
5419 <feed xmlns="http://www.w3.org/2005/Atom">
5420 XML
5421                 print "<title>$title</title>\n" .
5422                       "<subtitle>$descr</subtitle>\n" .
5423                       '<link rel="alternate" type="text/html" href="' .
5424                       $alt_url . '" />' . "\n" .
5425                       '<link rel="self" type="' . $content_type . '" href="' .
5426                       $cgi->self_url() . '" />' . "\n" .
5427                       "<id>" . href(-full=>1) . "</id>\n" .
5428                       # use project owner for feed author
5429                       "<author><name>$owner</name></author>\n";
5430                 if (defined $favicon) {
5431                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5432                 }
5433                 if (defined $logo_url) {
5434                         # not twice as wide as tall: 72 x 27 pixels
5435                         print "<logo>" . esc_url($logo) . "</logo>\n";
5436                 }
5437                 if (! %latest_date) {
5438                         # dummy date to keep the feed valid until commits trickle in:
5439                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5440                 } else {
5441                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5442                 }
5443         }
5444
5445         # contents
5446         for (my $i = 0; $i <= $#commitlist; $i++) {
5447                 my %co = %{$commitlist[$i]};
5448                 my $commit = $co{'id'};
5449                 # we read 150, we always show 30 and the ones more recent than 48 hours
5450                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5451                         last;
5452                 }
5453                 my %cd = parse_date($co{'author_epoch'});
5454
5455                 # get list of changed files
5456                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5457                         $co{'parent'} || "--root",
5458                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5459                         or next;
5460                 my @difftree = map { chomp; $_ } <$fd>;
5461                 close $fd
5462                         or next;
5463
5464                 # print element (entry, item)
5465                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5466                 if ($format eq 'rss') {
5467                         print "<item>\n" .
5468                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5469                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5470                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5471                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5472                               "<link>$co_url</link>\n" .
5473                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5474                               "<content:encoded>" .
5475                               "<![CDATA[\n";
5476                 } elsif ($format eq 'atom') {
5477                         print "<entry>\n" .
5478                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5479                               "<updated>$cd{'iso-8601'}</updated>\n" .
5480                               "<author>\n" .
5481                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5482                         if ($co{'author_email'}) {
5483                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5484                         }
5485                         print "</author>\n" .
5486                               # use committer for contributor
5487                               "<contributor>\n" .
5488                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5489                         if ($co{'committer_email'}) {
5490                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5491                         }
5492                         print "</contributor>\n" .
5493                               "<published>$cd{'iso-8601'}</published>\n" .
5494                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5495                               "<id>$co_url</id>\n" .
5496                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5497                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5498                 }
5499                 my $comment = $co{'comment'};
5500                 print "<pre>\n";
5501                 foreach my $line (@$comment) {
5502                         $line = esc_html($line);
5503                         print "$line\n";
5504                 }
5505                 print "</pre><ul>\n";
5506                 foreach my $difftree_line (@difftree) {
5507                         my %difftree = parse_difftree_raw_line($difftree_line);
5508                         next if !$difftree{'from_id'};
5509
5510                         my $file = $difftree{'file'} || $difftree{'to_file'};
5511
5512                         print "<li>" .
5513                               "[" .
5514                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5515                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5516                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5517                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5518                                       -title => "diff"}, 'D');
5519                         if ($have_blame) {
5520                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5521                                                              file_name=>$file, hash_base=>$commit),
5522                                               -title => "blame"}, 'B');
5523                         }
5524                         # if this is not a feed of a file history
5525                         if (!defined $file_name || $file_name ne $file) {
5526                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5527                                                              file_name=>$file, hash=>$commit),
5528                                               -title => "history"}, 'H');
5529                         }
5530                         $file = esc_path($file);
5531                         print "] ".
5532                               "$file</li>\n";
5533                 }
5534                 if ($format eq 'rss') {
5535                         print "</ul>]]>\n" .
5536                               "</content:encoded>\n" .
5537                               "</item>\n";
5538                 } elsif ($format eq 'atom') {
5539                         print "</ul>\n</div>\n" .
5540                               "</content>\n" .
5541                               "</entry>\n";
5542                 }
5543         }
5544
5545         # end of feed
5546         if ($format eq 'rss') {
5547                 print "</channel>\n</rss>\n";
5548         }       elsif ($format eq 'atom') {
5549                 print "</feed>\n";
5550         }
5551 }
5552
5553 sub git_rss {
5554         git_feed('rss');
5555 }
5556
5557 sub git_atom {
5558         git_feed('atom');
5559 }
5560
5561 sub git_opml {
5562         my @list = git_get_projects_list();
5563
5564         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5565         print <<XML;
5566 <?xml version="1.0" encoding="utf-8"?>
5567 <opml version="1.0">
5568 <head>
5569   <title>$site_name OPML Export</title>
5570 </head>
5571 <body>
5572 <outline text="git RSS feeds">
5573 XML
5574
5575         foreach my $pr (@list) {
5576                 my %proj = %$pr;
5577                 my $head = git_get_head_hash($proj{'path'});
5578                 if (!defined $head) {
5579                         next;
5580                 }
5581                 $git_dir = "$projectroot/$proj{'path'}";
5582                 my %co = parse_commit($head);
5583                 if (!%co) {
5584                         next;
5585                 }
5586
5587                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5588                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5589                 my $html = "$my_url?p=$proj{'path'};a=summary";
5590                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5591         }
5592         print <<XML;
5593 </outline>
5594 </body>
5595 </opml>
5596 XML
5597 }