Lady’s Gitweb - Gitweb/blob - gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # default order of projects list
  76 # valid values are none, project, descr, owner, and age
  77 our $default_projects_order = "project";
  78
  79 # show repository only if this file exists
  80 # (only effective if this variable evaluates to true)
  81 our $export_ok = "++GITWEB_EXPORT_OK++";
  82
  83 # only allow viewing of repositories also shown on the overview page
  84 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  85
  86 # list of git base URLs used for URL to where fetch project from,
  87 # i.e. full URL is "$git_base_url/$project"
  88 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  89
  90 # default blob_plain mimetype and default charset for text/plain blob
  91 our $default_blob_plain_mimetype = 'text/plain';
  92 our $default_text_plain_charset  = undef;
  93
  94 # file to use for guessing MIME types before trying /etc/mime.types
  95 # (relative to the current git repository)
  96 our $mimetypes_file = undef;
  97
  98 # assume this charset if line contains non-UTF-8 characters;
  99 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 100 # for which encoding all byte sequences are valid, for example
 101 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 102 # could be even 'utf-8' for the old behavior)
 103 our $fallback_encoding = 'latin1';
 104
 105 # You define site-wide feature defaults here; override them with
 106 # $GITWEB_CONFIG as necessary.
 107 our %feature = (
 108         # feature => {
 109         #       'sub' => feature-sub (subroutine),
 110         #       'override' => allow-override (boolean),
 111         #       'default' => [ default options...] (array reference)}
 112         #
 113         # if feature is overridable (it means that allow-override has true value),
 114         # then feature-sub will be called with default options as parameters;
 115         # return value of feature-sub indicates if to enable specified feature
 116         #
 117         # if there is no 'sub' key (no feature-sub), then feature cannot be
 118         # overriden
 119         #
 120         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 121
 122         # Enable the 'blame' blob view, showing the last commit that modified
 123         # each line in the file. This can be very CPU-intensive.
 124
 125         # To enable system wide have in $GITWEB_CONFIG
 126         # $feature{'blame'}{'default'} = [1];
 127         # To have project specific config enable override in $GITWEB_CONFIG
 128         # $feature{'blame'}{'override'} = 1;
 129         # and in project config gitweb.blame = 0|1;
 130         'blame' => {
 131                 'sub' => \&feature_blame,
 132                 'override' => 0,
 133                 'default' => [0]},
 134
 135         # Enable the 'snapshot' link, providing a compressed tarball of any
 136         # tree. This can potentially generate high traffic if you have large
 137         # project.
 138
 139         # To disable system wide have in $GITWEB_CONFIG
 140         # $feature{'snapshot'}{'default'} = [undef];
 141         # To have project specific config enable override in $GITWEB_CONFIG
 142         # $feature{'snapshot'}{'override'} = 1;
 143         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 144         'snapshot' => {
 145                 'sub' => \&feature_snapshot,
 146                 'override' => 0,
 147                 #         => [content-encoding, suffix, program]
 148                 'default' => ['x-gzip', 'gz', 'gzip']},
 149
 150         # Enable text search, which will list the commits which match author,
 151         # committer or commit text to a given string.  Enabled by default.
 152         # Project specific override is not supported.
 153         'search' => {
 154                 'override' => 0,
 155                 'default' => [1]},
 156
 157         # Enable grep search, which will list the files in currently selected
 158         # tree containing the given string. Enabled by default. This can be
 159         # potentially CPU-intensive, of course.
 160
 161         # To enable system wide have in $GITWEB_CONFIG
 162         # $feature{'grep'}{'default'} = [1];
 163         # To have project specific config enable override in $GITWEB_CONFIG
 164         # $feature{'grep'}{'override'} = 1;
 165         # and in project config gitweb.grep = 0|1;
 166         'grep' => {
 167                 'override' => 0,
 168                 'default' => [1]},
 169
 170         # Enable the pickaxe search, which will list the commits that modified
 171         # a given string in a file. This can be practical and quite faster
 172         # alternative to 'blame', but still potentially CPU-intensive.
 173
 174         # To enable system wide have in $GITWEB_CONFIG
 175         # $feature{'pickaxe'}{'default'} = [1];
 176         # To have project specific config enable override in $GITWEB_CONFIG
 177         # $feature{'pickaxe'}{'override'} = 1;
 178         # and in project config gitweb.pickaxe = 0|1;
 179         'pickaxe' => {
 180                 'sub' => \&feature_pickaxe,
 181                 'override' => 0,
 182                 'default' => [1]},
 183
 184         # Make gitweb use an alternative format of the URLs which can be
 185         # more readable and natural-looking: project name is embedded
 186         # directly in the path and the query string contains other
 187         # auxiliary information. All gitweb installations recognize
 188         # URL in either format; this configures in which formats gitweb
 189         # generates links.
 190
 191         # To enable system wide have in $GITWEB_CONFIG
 192         # $feature{'pathinfo'}{'default'} = [1];
 193         # Project specific override is not supported.
 194
 195         # Note that you will need to change the default location of CSS,
 196         # favicon, logo and possibly other files to an absolute URL. Also,
 197         # if gitweb.cgi serves as your indexfile, you will need to force
 198         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 199         'pathinfo' => {
 200                 'override' => 0,
 201                 'default' => [0]},
 202
 203         # Make gitweb consider projects in project root subdirectories
 204         # to be forks of existing projects. Given project $projname.git,
 205         # projects matching $projname/*.git will not be shown in the main
 206         # projects list, instead a '+' mark will be added to $projname
 207         # there and a 'forks' view will be enabled for the project, listing
 208         # all the forks. If project list is taken from a file, forks have
 209         # to be listed after the main project.
 210
 211         # To enable system wide have in $GITWEB_CONFIG
 212         # $feature{'forks'}{'default'} = [1];
 213         # Project specific override is not supported.
 214         'forks' => {
 215                 'override' => 0,
 216                 'default' => [0]},
 217 );
 218
 219 sub gitweb_check_feature {
 220         my ($name) = @_;
 221         return unless exists $feature{$name};
 222         my ($sub, $override, @defaults) = (
 223                 $feature{$name}{'sub'},
 224                 $feature{$name}{'override'},
 225                 @{$feature{$name}{'default'}});
 226         if (!$override) { return @defaults; }
 227         if (!defined $sub) {
 228                 warn "feature $name is not overrideable";
 229                 return @defaults;
 230         }
 231         return $sub->(@defaults);
 232 }
 233
 234 sub feature_blame {
 235         my ($val) = git_get_project_config('blame', '--bool');
 236
 237         if ($val eq 'true') {
 238                 return 1;
 239         } elsif ($val eq 'false') {
 240                 return 0;
 241         }
 242
 243         return $_[0];
 244 }
 245
 246 sub feature_snapshot {
 247         my ($ctype, $suffix, $command) = @_;
 248
 249         my ($val) = git_get_project_config('snapshot');
 250
 251         if ($val eq 'gzip') {
 252                 return ('x-gzip', 'gz', 'gzip');
 253         } elsif ($val eq 'bzip2') {
 254                 return ('x-bzip2', 'bz2', 'bzip2');
 255         } elsif ($val eq 'zip') {
 256                 return ('x-zip', 'zip', '');
 257         } elsif ($val eq 'none') {
 258                 return ();
 259         }
 260
 261         return ($ctype, $suffix, $command);
 262 }
 263
 264 sub gitweb_have_snapshot {
 265         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 266         my $have_snapshot = (defined $ctype && defined $suffix);
 267
 268         return $have_snapshot;
 269 }
 270
 271 sub feature_grep {
 272         my ($val) = git_get_project_config('grep', '--bool');
 273
 274         if ($val eq 'true') {
 275                 return (1);
 276         } elsif ($val eq 'false') {
 277                 return (0);
 278         }
 279
 280         return ($_[0]);
 281 }
 282
 283 sub feature_pickaxe {
 284         my ($val) = git_get_project_config('pickaxe', '--bool');
 285
 286         if ($val eq 'true') {
 287                 return (1);
 288         } elsif ($val eq 'false') {
 289                 return (0);
 290         }
 291
 292         return ($_[0]);
 293 }
 294
 295 # checking HEAD file with -e is fragile if the repository was
 296 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 297 # and then pruned.
 298 sub check_head_link {
 299         my ($dir) = @_;
 300         my $headfile = "$dir/HEAD";
 301         return ((-e $headfile) ||
 302                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 303 }
 304
 305 sub check_export_ok {
 306         my ($dir) = @_;
 307         return (check_head_link($dir) &&
 308                 (!$export_ok || -e "$dir/$export_ok"));
 309 }
 310
 311 # rename detection options for git-diff and git-diff-tree
 312 # - default is '-M', with the cost proportional to
 313 #   (number of removed files) * (number of new files).
 314 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 315 #   (number of changed files + number of removed files) * (number of new files)
 316 # - even more costly is '-C', '--find-copies-harder' with cost
 317 #   (number of files in the original tree) * (number of new files)
 318 # - one might want to include '-B' option, e.g. '-B', '-M'
 319 our @diff_opts = ('-M'); # taken from git_commit
 320
 321 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 322 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 323
 324 # version of the core git binary
 325 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 326
 327 $projects_list ||= $projectroot;
 328
 329 # ======================================================================
 330 # input validation and dispatch
 331 our $action = $cgi->param('a');
 332 if (defined $action) {
 333         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 334                 die_error(undef, "Invalid action parameter");
 335         }
 336 }
 337
 338 # parameters which are pathnames
 339 our $project = $cgi->param('p');
 340 if (defined $project) {
 341         if (!validate_pathname($project) ||
 342             !(-d "$projectroot/$project") ||
 343             !check_head_link("$projectroot/$project") ||
 344             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 345             ($strict_export && !project_in_list($project))) {
 346                 undef $project;
 347                 die_error(undef, "No such project");
 348         }
 349 }
 350
 351 our $file_name = $cgi->param('f');
 352 if (defined $file_name) {
 353         if (!validate_pathname($file_name)) {
 354                 die_error(undef, "Invalid file parameter");
 355         }
 356 }
 357
 358 our $file_parent = $cgi->param('fp');
 359 if (defined $file_parent) {
 360         if (!validate_pathname($file_parent)) {
 361                 die_error(undef, "Invalid file parent parameter");
 362         }
 363 }
 364
 365 # parameters which are refnames
 366 our $hash = $cgi->param('h');
 367 if (defined $hash) {
 368         if (!validate_refname($hash)) {
 369                 die_error(undef, "Invalid hash parameter");
 370         }
 371 }
 372
 373 our $hash_parent = $cgi->param('hp');
 374 if (defined $hash_parent) {
 375         if (!validate_refname($hash_parent)) {
 376                 die_error(undef, "Invalid hash parent parameter");
 377         }
 378 }
 379
 380 our $hash_base = $cgi->param('hb');
 381 if (defined $hash_base) {
 382         if (!validate_refname($hash_base)) {
 383                 die_error(undef, "Invalid hash base parameter");
 384         }
 385 }
 386
 387 our $hash_parent_base = $cgi->param('hpb');
 388 if (defined $hash_parent_base) {
 389         if (!validate_refname($hash_parent_base)) {
 390                 die_error(undef, "Invalid hash parent base parameter");
 391         }
 392 }
 393
 394 # other parameters
 395 our $page = $cgi->param('pg');
 396 if (defined $page) {
 397         if ($page =~ m/[^0-9]/) {
 398                 die_error(undef, "Invalid page parameter");
 399         }
 400 }
 401
 402 our $searchtype = $cgi->param('st');
 403 if (defined $searchtype) {
 404         if ($searchtype =~ m/[^a-z]/) {
 405                 die_error(undef, "Invalid searchtype parameter");
 406         }
 407 }
 408
 409 our $searchtext = $cgi->param('s');
 410 our $search_regexp;
 411 if (defined $searchtext) {
 412         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 413                 die_error(undef, "Invalid search parameter");
 414         }
 415         if (length($searchtext) < 2) {
 416                 die_error(undef, "At least two characters are required for search parameter");
 417         }
 418         $search_regexp = quotemeta $searchtext;
 419 }
 420
 421 # now read PATH_INFO and use it as alternative to parameters
 422 sub evaluate_path_info {
 423         return if defined $project;
 424         my $path_info = $ENV{"PATH_INFO"};
 425         return if !$path_info;
 426         $path_info =~ s,^/+,,;
 427         return if !$path_info;
 428         # find which part of PATH_INFO is project
 429         $project = $path_info;
 430         $project =~ s,/+$,,;
 431         while ($project && !check_head_link("$projectroot/$project")) {
 432                 $project =~ s,/*[^/]*$,,;
 433         }
 434         # validate project
 435         $project = validate_pathname($project);
 436         if (!$project ||
 437             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 438             ($strict_export && !project_in_list($project))) {
 439                 undef $project;
 440                 return;
 441         }
 442         # do not change any parameters if an action is given using the query string
 443         return if $action;
 444         $path_info =~ s,^$project/*,,;
 445         my ($refname, $pathname) = split(/:/, $path_info, 2);
 446         if (defined $pathname) {
 447                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 448                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 449                 $pathname =~ s,^/+,,;
 450                 if (!$pathname || substr($pathname, -1) eq "/") {
 451                         $action  ||= "tree";
 452                         $pathname =~ s,/$,,;
 453                 } else {
 454                         $action  ||= "blob_plain";
 455                 }
 456                 $hash_base ||= validate_refname($refname);
 457                 $file_name ||= validate_pathname($pathname);
 458         } elsif (defined $refname) {
 459                 # we got "project.git/branch"
 460                 $action ||= "shortlog";
 461                 $hash   ||= validate_refname($refname);
 462         }
 463 }
 464 evaluate_path_info();
 465
 466 # path to the current git repository
 467 our $git_dir;
 468 $git_dir = "$projectroot/$project" if $project;
 469
 470 # dispatch
 471 my %actions = (
 472         "blame" => \&git_blame2,
 473         "blobdiff" => \&git_blobdiff,
 474         "blobdiff_plain" => \&git_blobdiff_plain,
 475         "blob" => \&git_blob,
 476         "blob_plain" => \&git_blob_plain,
 477         "commitdiff" => \&git_commitdiff,
 478         "commitdiff_plain" => \&git_commitdiff_plain,
 479         "commit" => \&git_commit,
 480         "forks" => \&git_forks,
 481         "heads" => \&git_heads,
 482         "history" => \&git_history,
 483         "log" => \&git_log,
 484         "rss" => \&git_rss,
 485         "atom" => \&git_atom,
 486         "search" => \&git_search,
 487         "search_help" => \&git_search_help,
 488         "shortlog" => \&git_shortlog,
 489         "summary" => \&git_summary,
 490         "tag" => \&git_tag,
 491         "tags" => \&git_tags,
 492         "tree" => \&git_tree,
 493         "snapshot" => \&git_snapshot,
 494         "object" => \&git_object,
 495         # those below don't need $project
 496         "opml" => \&git_opml,
 497         "project_list" => \&git_project_list,
 498         "project_index" => \&git_project_index,
 499 );
 500
 501 if (!defined $action) {
 502         if (defined $hash) {
 503                 $action = git_get_type($hash);
 504         } elsif (defined $hash_base && defined $file_name) {
 505                 $action = git_get_type("$hash_base:$file_name");
 506         } elsif (defined $project) {
 507                 $action = 'summary';
 508         } else {
 509                 $action = 'project_list';
 510         }
 511 }
 512 if (!defined($actions{$action})) {
 513         die_error(undef, "Unknown action");
 514 }
 515 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 516     !$project) {
 517         die_error(undef, "Project needed");
 518 }
 519 $actions{$action}->();
 520 exit;
 521
 522 ## ======================================================================
 523 ## action links
 524
 525 sub href(%) {
 526         my %params = @_;
 527         # default is to use -absolute url() i.e. $my_uri
 528         my $href = $params{-full} ? $my_url : $my_uri;
 529
 530         # XXX: Warning: If you touch this, check the search form for updating,
 531         # too.
 532
 533         my @mapping = (
 534                 project => "p",
 535                 action => "a",
 536                 file_name => "f",
 537                 file_parent => "fp",
 538                 hash => "h",
 539                 hash_parent => "hp",
 540                 hash_base => "hb",
 541                 hash_parent_base => "hpb",
 542                 page => "pg",
 543                 order => "o",
 544                 searchtext => "s",
 545                 searchtype => "st",
 546         );
 547         my %mapping = @mapping;
 548
 549         $params{'project'} = $project unless exists $params{'project'};
 550
 551         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 552         if ($use_pathinfo) {
 553                 # use PATH_INFO for project name
 554                 $href .= "/$params{'project'}" if defined $params{'project'};
 555                 delete $params{'project'};
 556
 557                 # Summary just uses the project path URL
 558                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 559                         delete $params{'action'};
 560                 }
 561         }
 562
 563         # now encode the parameters explicitly
 564         my @result = ();
 565         for (my $i = 0; $i < @mapping; $i += 2) {
 566                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 567                 if (defined $params{$name}) {
 568                         push @result, $symbol . "=" . esc_param($params{$name});
 569                 }
 570         }
 571         $href .= "?" . join(';', @result) if scalar @result;
 572
 573         return $href;
 574 }
 575
 576
 577 ## ======================================================================
 578 ## validation, quoting/unquoting and escaping
 579
 580 sub validate_pathname {
 581         my $input = shift || return undef;
 582
 583         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 584         # at the beginning, at the end, and between slashes.
 585         # also this catches doubled slashes
 586         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 587                 return undef;
 588         }
 589         # no null characters
 590         if ($input =~ m!\0!) {
 591                 return undef;
 592         }
 593         return $input;
 594 }
 595
 596 sub validate_refname {
 597         my $input = shift || return undef;
 598
 599         # textual hashes are O.K.
 600         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 601                 return $input;
 602         }
 603         # it must be correct pathname
 604         $input = validate_pathname($input)
 605                 or return undef;
 606         # restrictions on ref name according to git-check-ref-format
 607         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 608                 return undef;
 609         }
 610         return $input;
 611 }
 612
 613 # decode sequences of octets in utf8 into Perl's internal form,
 614 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 615 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 616 sub to_utf8 {
 617         my $str = shift;
 618         my $res;
 619         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 620         if (defined $res) {
 621                 return $res;
 622         } else {
 623                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 624         }
 625 }
 626
 627 # quote unsafe chars, but keep the slash, even when it's not
 628 # correct, but quoted slashes look too horrible in bookmarks
 629 sub esc_param {
 630         my $str = shift;
 631         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 632         $str =~ s/\+/%2B/g;
 633         $str =~ s/ /\+/g;
 634         return $str;
 635 }
 636
 637 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 638 sub esc_url {
 639         my $str = shift;
 640         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 641         $str =~ s/\+/%2B/g;
 642         $str =~ s/ /\+/g;
 643         return $str;
 644 }
 645
 646 # replace invalid utf8 character with SUBSTITUTION sequence
 647 sub esc_html ($;%) {
 648         my $str = shift;
 649         my %opts = @_;
 650
 651         $str = to_utf8($str);
 652         $str = $cgi->escapeHTML($str);
 653         if ($opts{'-nbsp'}) {
 654                 $str =~ s/ /&nbsp;/g;
 655         }
 656         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 657         return $str;
 658 }
 659
 660 # quote control characters and escape filename to HTML
 661 sub esc_path {
 662         my $str = shift;
 663         my %opts = @_;
 664
 665         $str = to_utf8($str);
 666         $str = $cgi->escapeHTML($str);
 667         if ($opts{'-nbsp'}) {
 668                 $str =~ s/ /&nbsp;/g;
 669         }
 670         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 671         return $str;
 672 }
 673
 674 # Make control characters "printable", using character escape codes (CEC)
 675 sub quot_cec {
 676         my $cntrl = shift;
 677         my %es = ( # character escape codes, aka escape sequences
 678                    "\t" => '\t',   # tab            (HT)
 679                    "\n" => '\n',   # line feed      (LF)
 680                    "\r" => '\r',   # carrige return (CR)
 681                    "\f" => '\f',   # form feed      (FF)
 682                    "\b" => '\b',   # backspace      (BS)
 683                    "\a" => '\a',   # alarm (bell)   (BEL)
 684                    "\e" => '\e',   # escape         (ESC)
 685                    "\013" => '\v', # vertical tab   (VT)
 686                    "\000" => '\0', # nul character  (NUL)
 687                    );
 688         my $chr = ( (exists $es{$cntrl})
 689                     ? $es{$cntrl}
 690                     : sprintf('\%03o', ord($cntrl)) );
 691         return "<span class=\"cntrl\">$chr</span>";
 692 }
 693
 694 # Alternatively use unicode control pictures codepoints,
 695 # Unicode "printable representation" (PR)
 696 sub quot_upr {
 697         my $cntrl = shift;
 698         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 699         return "<span class=\"cntrl\">$chr</span>";
 700 }
 701
 702 # git may return quoted and escaped filenames
 703 sub unquote {
 704         my $str = shift;
 705
 706         sub unq {
 707                 my $seq = shift;
 708                 my %es = ( # character escape codes, aka escape sequences
 709                         't' => "\t",   # tab            (HT, TAB)
 710                         'n' => "\n",   # newline        (NL)
 711                         'r' => "\r",   # return         (CR)
 712                         'f' => "\f",   # form feed      (FF)
 713                         'b' => "\b",   # backspace      (BS)
 714                         'a' => "\a",   # alarm (bell)   (BEL)
 715                         'e' => "\e",   # escape         (ESC)
 716                         'v' => "\013", # vertical tab   (VT)
 717                 );
 718
 719                 if ($seq =~ m/^[0-7]{1,3}$/) {
 720                         # octal char sequence
 721                         return chr(oct($seq));
 722                 } elsif (exists $es{$seq}) {
 723                         # C escape sequence, aka character escape code
 724                         return $es{$seq}
 725                 }
 726                 # quoted ordinary character
 727                 return $seq;
 728         }
 729
 730         if ($str =~ m/^"(.*)"$/) {
 731                 # needs unquoting
 732                 $str = $1;
 733                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 734         }
 735         return $str;
 736 }
 737
 738 # escape tabs (convert tabs to spaces)
 739 sub untabify {
 740         my $line = shift;
 741
 742         while ((my $pos = index($line, "\t")) != -1) {
 743                 if (my $count = (8 - ($pos % 8))) {
 744                         my $spaces = ' ' x $count;
 745                         $line =~ s/\t/$spaces/;
 746                 }
 747         }
 748
 749         return $line;
 750 }
 751
 752 sub project_in_list {
 753         my $project = shift;
 754         my @list = git_get_projects_list();
 755         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 756 }
 757
 758 ## ----------------------------------------------------------------------
 759 ## HTML aware string manipulation
 760
 761 sub chop_str {
 762         my $str = shift;
 763         my $len = shift;
 764         my $add_len = shift || 10;
 765
 766         # allow only $len chars, but don't cut a word if it would fit in $add_len
 767         # if it doesn't fit, cut it if it's still longer than the dots we would add
 768         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 769         my $body = $1;
 770         my $tail = $2;
 771         if (length($tail) > 4) {
 772                 $tail = " ...";
 773                 $body =~ s/&[^;]*$//; # remove chopped character entities
 774         }
 775         return "$body$tail";
 776 }
 777
 778 ## ----------------------------------------------------------------------
 779 ## functions returning short strings
 780
 781 # CSS class for given age value (in seconds)
 782 sub age_class {
 783         my $age = shift;
 784
 785         if (!defined $age) {
 786                 return "noage";
 787         } elsif ($age < 60*60*2) {
 788                 return "age0";
 789         } elsif ($age < 60*60*24*2) {
 790                 return "age1";
 791         } else {
 792                 return "age2";
 793         }
 794 }
 795
 796 # convert age in seconds to "nn units ago" string
 797 sub age_string {
 798         my $age = shift;
 799         my $age_str;
 800
 801         if ($age > 60*60*24*365*2) {
 802                 $age_str = (int $age/60/60/24/365);
 803                 $age_str .= " years ago";
 804         } elsif ($age > 60*60*24*(365/12)*2) {
 805                 $age_str = int $age/60/60/24/(365/12);
 806                 $age_str .= " months ago";
 807         } elsif ($age > 60*60*24*7*2) {
 808                 $age_str = int $age/60/60/24/7;
 809                 $age_str .= " weeks ago";
 810         } elsif ($age > 60*60*24*2) {
 811                 $age_str = int $age/60/60/24;
 812                 $age_str .= " days ago";
 813         } elsif ($age > 60*60*2) {
 814                 $age_str = int $age/60/60;
 815                 $age_str .= " hours ago";
 816         } elsif ($age > 60*2) {
 817                 $age_str = int $age/60;
 818                 $age_str .= " min ago";
 819         } elsif ($age > 2) {
 820                 $age_str = int $age;
 821                 $age_str .= " sec ago";
 822         } else {
 823                 $age_str .= " right now";
 824         }
 825         return $age_str;
 826 }
 827
 828 # convert file mode in octal to symbolic file mode string
 829 sub mode_str {
 830         my $mode = oct shift;
 831
 832         if (S_ISDIR($mode & S_IFMT)) {
 833                 return 'drwxr-xr-x';
 834         } elsif (S_ISLNK($mode)) {
 835                 return 'lrwxrwxrwx';
 836         } elsif (S_ISREG($mode)) {
 837                 # git cares only about the executable bit
 838                 if ($mode & S_IXUSR) {
 839                         return '-rwxr-xr-x';
 840                 } else {
 841                         return '-rw-r--r--';
 842                 };
 843         } else {
 844                 return '----------';
 845         }
 846 }
 847
 848 # convert file mode in octal to file type string
 849 sub file_type {
 850         my $mode = shift;
 851
 852         if ($mode !~ m/^[0-7]+$/) {
 853                 return $mode;
 854         } else {
 855                 $mode = oct $mode;
 856         }
 857
 858         if (S_ISDIR($mode & S_IFMT)) {
 859                 return "directory";
 860         } elsif (S_ISLNK($mode)) {
 861                 return "symlink";
 862         } elsif (S_ISREG($mode)) {
 863                 return "file";
 864         } else {
 865                 return "unknown";
 866         }
 867 }
 868
 869 # convert file mode in octal to file type description string
 870 sub file_type_long {
 871         my $mode = shift;
 872
 873         if ($mode !~ m/^[0-7]+$/) {
 874                 return $mode;
 875         } else {
 876                 $mode = oct $mode;
 877         }
 878
 879         if (S_ISDIR($mode & S_IFMT)) {
 880                 return "directory";
 881         } elsif (S_ISLNK($mode)) {
 882                 return "symlink";
 883         } elsif (S_ISREG($mode)) {
 884                 if ($mode & S_IXUSR) {
 885                         return "executable";
 886                 } else {
 887                         return "file";
 888                 };
 889         } else {
 890                 return "unknown";
 891         }
 892 }
 893
 894
 895 ## ----------------------------------------------------------------------
 896 ## functions returning short HTML fragments, or transforming HTML fragments
 897 ## which don't belong to other sections
 898
 899 # format line of commit message.
 900 sub format_log_line_html {
 901         my $line = shift;
 902
 903         $line = esc_html($line, -nbsp=>1);
 904         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 905                 my $hash_text = $1;
 906                 my $link =
 907                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 908                                 -class => "text"}, $hash_text);
 909                 $line =~ s/$hash_text/$link/;
 910         }
 911         return $line;
 912 }
 913
 914 # format marker of refs pointing to given object
 915 sub format_ref_marker {
 916         my ($refs, $id) = @_;
 917         my $markers = '';
 918
 919         if (defined $refs->{$id}) {
 920                 foreach my $ref (@{$refs->{$id}}) {
 921                         my ($type, $name) = qw();
 922                         # e.g. tags/v2.6.11 or heads/next
 923                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 924                                 $type = $1;
 925                                 $name = $2;
 926                         } else {
 927                                 $type = "ref";
 928                                 $name = $ref;
 929                         }
 930
 931                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 932                                     esc_html($name) . "</span>";
 933                 }
 934         }
 935
 936         if ($markers) {
 937                 return ' <span class="refs">'. $markers . '</span>';
 938         } else {
 939                 return "";
 940         }
 941 }
 942
 943 # format, perhaps shortened and with markers, title line
 944 sub format_subject_html {
 945         my ($long, $short, $href, $extra) = @_;
 946         $extra = '' unless defined($extra);
 947
 948         if (length($short) < length($long)) {
 949                 return $cgi->a({-href => $href, -class => "list subject",
 950                                 -title => to_utf8($long)},
 951                        esc_html($short) . $extra);
 952         } else {
 953                 return $cgi->a({-href => $href, -class => "list subject"},
 954                        esc_html($long)  . $extra);
 955         }
 956 }
 957
 958 # format patch (diff) line (rather not to be used for diff headers)
 959 sub format_diff_line {
 960         my $line = shift;
 961         my ($from, $to) = @_;
 962         my $diff_class = "";
 963
 964         chomp $line;
 965
 966         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 967                 # combined diff
 968                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 969                 if ($line =~ m/^\@{3}/) {
 970                         $diff_class = " chunk_header";
 971                 } elsif ($line =~ m/^\\/) {
 972                         $diff_class = " incomplete";
 973                 } elsif ($prefix =~ tr/+/+/) {
 974                         $diff_class = " add";
 975                 } elsif ($prefix =~ tr/-/-/) {
 976                         $diff_class = " rem";
 977                 }
 978         } else {
 979                 # assume ordinary diff
 980                 my $char = substr($line, 0, 1);
 981                 if ($char eq '+') {
 982                         $diff_class = " add";
 983                 } elsif ($char eq '-') {
 984                         $diff_class = " rem";
 985                 } elsif ($char eq '@') {
 986                         $diff_class = " chunk_header";
 987                 } elsif ($char eq "\\") {
 988                         $diff_class = " incomplete";
 989                 }
 990         }
 991         $line = untabify($line);
 992         if ($from && $to && $line =~ m/^\@{2} /) {
 993                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 994                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 995
 996                 $from_lines = 0 unless defined $from_lines;
 997                 $to_lines   = 0 unless defined $to_lines;
 998
 999                 if ($from->{'href'}) {
1000                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1001                                              -class=>"list"}, $from_text);
1002                 }
1003                 if ($to->{'href'}) {
1004                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1005                                              -class=>"list"}, $to_text);
1006                 }
1007                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1008                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1009                 return "<div class=\"diff$diff_class\">$line</div>\n";
1010         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1011                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1012                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1013
1014                 @from_text = split(' ', $ranges);
1015                 for (my $i = 0; $i < @from_text; ++$i) {
1016                         ($from_start[$i], $from_nlines[$i]) =
1017                                 (split(',', substr($from_text[$i], 1)), 0);
1018                 }
1019
1020                 $to_text   = pop @from_text;
1021                 $to_start  = pop @from_start;
1022                 $to_nlines = pop @from_nlines;
1023
1024                 $line = "<span class=\"chunk_info\">$prefix ";
1025                 for (my $i = 0; $i < @from_text; ++$i) {
1026                         if ($from->{'href'}[$i]) {
1027                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1028                                                   -class=>"list"}, $from_text[$i]);
1029                         } else {
1030                                 $line .= $from_text[$i];
1031                         }
1032                         $line .= " ";
1033                 }
1034                 if ($to->{'href'}) {
1035                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1036                                           -class=>"list"}, $to_text);
1037                 } else {
1038                         $line .= $to_text;
1039                 }
1040                 $line .= " $prefix</span>" .
1041                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1042                 return "<div class=\"diff$diff_class\">$line</div>\n";
1043         }
1044         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1045 }
1046
1047 ## ----------------------------------------------------------------------
1048 ## git utility subroutines, invoking git commands
1049
1050 # returns path to the core git executable and the --git-dir parameter as list
1051 sub git_cmd {
1052         return $GIT, '--git-dir='.$git_dir;
1053 }
1054
1055 # returns path to the core git executable and the --git-dir parameter as string
1056 sub git_cmd_str {
1057         return join(' ', git_cmd());
1058 }
1059
1060 # get HEAD ref of given project as hash
1061 sub git_get_head_hash {
1062         my $project = shift;
1063         my $o_git_dir = $git_dir;
1064         my $retval = undef;
1065         $git_dir = "$projectroot/$project";
1066         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1067                 my $head = <$fd>;
1068                 close $fd;
1069                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1070                         $retval = $1;
1071                 }
1072         }
1073         if (defined $o_git_dir) {
1074                 $git_dir = $o_git_dir;
1075         }
1076         return $retval;
1077 }
1078
1079 # get type of given object
1080 sub git_get_type {
1081         my $hash = shift;
1082
1083         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1084         my $type = <$fd>;
1085         close $fd or return;
1086         chomp $type;
1087         return $type;
1088 }
1089
1090 sub git_get_project_config {
1091         my ($key, $type) = @_;
1092
1093         return unless ($key);
1094         $key =~ s/^gitweb\.//;
1095         return if ($key =~ m/\W/);
1096
1097         my @x = (git_cmd(), 'config');
1098         if (defined $type) { push @x, $type; }
1099         push @x, "--get";
1100         push @x, "gitweb.$key";
1101         my $val = qx(@x);
1102         chomp $val;
1103         return ($val);
1104 }
1105
1106 # get hash of given path at given ref
1107 sub git_get_hash_by_path {
1108         my $base = shift;
1109         my $path = shift || return undef;
1110         my $type = shift;
1111
1112         $path =~ s,/+$,,;
1113
1114         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1115                 or die_error(undef, "Open git-ls-tree failed");
1116         my $line = <$fd>;
1117         close $fd or return undef;
1118
1119         if (!defined $line) {
1120                 # there is no tree or hash given by $path at $base
1121                 return undef;
1122         }
1123
1124         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1125         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1126         if (defined $type && $type ne $2) {
1127                 # type doesn't match
1128                 return undef;
1129         }
1130         return $3;
1131 }
1132
1133 # get path of entry with given hash at given tree-ish (ref)
1134 # used to get 'from' filename for combined diff (merge commit) for renames
1135 sub git_get_path_by_hash {
1136         my $base = shift || return;
1137         my $hash = shift || return;
1138
1139         local $/ = "\0";
1140
1141         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1142                 or return undef;
1143         while (my $line = <$fd>) {
1144                 chomp $line;
1145
1146                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1147                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1148                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1149                         close $fd;
1150                         return $1;
1151                 }
1152         }
1153         close $fd;
1154         return undef;
1155 }
1156
1157 ## ......................................................................
1158 ## git utility functions, directly accessing git repository
1159
1160 sub git_get_project_description {
1161         my $path = shift;
1162
1163         open my $fd, "$projectroot/$path/description" or return undef;
1164         my $descr = <$fd>;
1165         close $fd;
1166         if (defined $descr) {
1167                 chomp $descr;
1168         }
1169         return $descr;
1170 }
1171
1172 sub git_get_project_url_list {
1173         my $path = shift;
1174
1175         open my $fd, "$projectroot/$path/cloneurl" or return;
1176         my @git_project_url_list = map { chomp; $_ } <$fd>;
1177         close $fd;
1178
1179         return wantarray ? @git_project_url_list : \@git_project_url_list;
1180 }
1181
1182 sub git_get_projects_list {
1183         my ($filter) = @_;
1184         my @list;
1185
1186         $filter ||= '';
1187         $filter =~ s/\.git$//;
1188
1189         my ($check_forks) = gitweb_check_feature('forks');
1190
1191         if (-d $projects_list) {
1192                 # search in directory
1193                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1194                 # remove the trailing "/"
1195                 $dir =~ s!/+$!!;
1196                 my $pfxlen = length("$dir");
1197
1198                 File::Find::find({
1199                         follow_fast => 1, # follow symbolic links
1200                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1201                         wanted => sub {
1202                                 # skip project-list toplevel, if we get it.
1203                                 return if (m!^[/.]$!);
1204                                 # only directories can be git repositories
1205                                 return unless (-d $_);
1206
1207                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1208                                 # we check related file in $projectroot
1209                                 if ($check_forks and $subdir =~ m#/.#) {
1210                                         $File::Find::prune = 1;
1211                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1212                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1213                                         $File::Find::prune = 1;
1214                                 }
1215                         },
1216                 }, "$dir");
1217
1218         } elsif (-f $projects_list) {
1219                 # read from file(url-encoded):
1220                 # 'git%2Fgit.git Linus+Torvalds'
1221                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1222                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1223                 my %paths;
1224                 open my ($fd), $projects_list or return;
1225         PROJECT:
1226                 while (my $line = <$fd>) {
1227                         chomp $line;
1228                         my ($path, $owner) = split ' ', $line;
1229                         $path = unescape($path);
1230                         $owner = unescape($owner);
1231                         if (!defined $path) {
1232                                 next;
1233                         }
1234                         if ($filter ne '') {
1235                                 # looking for forks;
1236                                 my $pfx = substr($path, 0, length($filter));
1237                                 if ($pfx ne $filter) {
1238                                         next PROJECT;
1239                                 }
1240                                 my $sfx = substr($path, length($filter));
1241                                 if ($sfx !~ /^\/.*\.git$/) {
1242                                         next PROJECT;
1243                                 }
1244                         } elsif ($check_forks) {
1245                         PATH:
1246                                 foreach my $filter (keys %paths) {
1247                                         # looking for forks;
1248                                         my $pfx = substr($path, 0, length($filter));
1249                                         if ($pfx ne $filter) {
1250                                                 next PATH;
1251                                         }
1252                                         my $sfx = substr($path, length($filter));
1253                                         if ($sfx !~ /^\/.*\.git$/) {
1254                                                 next PATH;
1255                                         }
1256                                         # is a fork, don't include it in
1257                                         # the list
1258                                         next PROJECT;
1259                                 }
1260                         }
1261                         if (check_export_ok("$projectroot/$path")) {
1262                                 my $pr = {
1263                                         path => $path,
1264                                         owner => to_utf8($owner),
1265                                 };
1266                                 push @list, $pr;
1267                                 (my $forks_path = $path) =~ s/\.git$//;
1268                                 $paths{$forks_path}++;
1269                         }
1270                 }
1271                 close $fd;
1272         }
1273         return @list;
1274 }
1275
1276 sub git_get_project_owner {
1277         my $project = shift;
1278         my $owner;
1279
1280         return undef unless $project;
1281
1282         # read from file (url-encoded):
1283         # 'git%2Fgit.git Linus+Torvalds'
1284         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1285         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1286         if (-f $projects_list) {
1287                 open (my $fd , $projects_list);
1288                 while (my $line = <$fd>) {
1289                         chomp $line;
1290                         my ($pr, $ow) = split ' ', $line;
1291                         $pr = unescape($pr);
1292                         $ow = unescape($ow);
1293                         if ($pr eq $project) {
1294                                 $owner = to_utf8($ow);
1295                                 last;
1296                         }
1297                 }
1298                 close $fd;
1299         }
1300         if (!defined $owner) {
1301                 $owner = get_file_owner("$projectroot/$project");
1302         }
1303
1304         return $owner;
1305 }
1306
1307 sub git_get_last_activity {
1308         my ($path) = @_;
1309         my $fd;
1310
1311         $git_dir = "$projectroot/$path";
1312         open($fd, "-|", git_cmd(), 'for-each-ref',
1313              '--format=%(committer)',
1314              '--sort=-committerdate',
1315              '--count=1',
1316              'refs/heads') or return;
1317         my $most_recent = <$fd>;
1318         close $fd or return;
1319         if (defined $most_recent &&
1320             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1321                 my $timestamp = $1;
1322                 my $age = time - $timestamp;
1323                 return ($age, age_string($age));
1324         }
1325 }
1326
1327 sub git_get_references {
1328         my $type = shift || "";
1329         my %refs;
1330         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1331         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1332         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1333                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1334                 or return;
1335
1336         while (my $line = <$fd>) {
1337                 chomp $line;
1338                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1339                         if (defined $refs{$1}) {
1340                                 push @{$refs{$1}}, $2;
1341                         } else {
1342                                 $refs{$1} = [ $2 ];
1343                         }
1344                 }
1345         }
1346         close $fd or return;
1347         return \%refs;
1348 }
1349
1350 sub git_get_rev_name_tags {
1351         my $hash = shift || return undef;
1352
1353         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1354                 or return;
1355         my $name_rev = <$fd>;
1356         close $fd;
1357
1358         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1359                 return $1;
1360         } else {
1361                 # catches also '$hash undefined' output
1362                 return undef;
1363         }
1364 }
1365
1366 ## ----------------------------------------------------------------------
1367 ## parse to hash functions
1368
1369 sub parse_date {
1370         my $epoch = shift;
1371         my $tz = shift || "-0000";
1372
1373         my %date;
1374         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1375         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1376         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1377         $date{'hour'} = $hour;
1378         $date{'minute'} = $min;
1379         $date{'mday'} = $mday;
1380         $date{'day'} = $days[$wday];
1381         $date{'month'} = $months[$mon];
1382         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1383                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1384         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1385                              $mday, $months[$mon], $hour ,$min;
1386         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1387                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1388
1389         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1390         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1391         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1392         $date{'hour_local'} = $hour;
1393         $date{'minute_local'} = $min;
1394         $date{'tz_local'} = $tz;
1395         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1396                                   1900+$year, $mon+1, $mday,
1397                                   $hour, $min, $sec, $tz);
1398         return %date;
1399 }
1400
1401 sub parse_tag {
1402         my $tag_id = shift;
1403         my %tag;
1404         my @comment;
1405
1406         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1407         $tag{'id'} = $tag_id;
1408         while (my $line = <$fd>) {
1409                 chomp $line;
1410                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1411                         $tag{'object'} = $1;
1412                 } elsif ($line =~ m/^type (.+)$/) {
1413                         $tag{'type'} = $1;
1414                 } elsif ($line =~ m/^tag (.+)$/) {
1415                         $tag{'name'} = $1;
1416                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1417                         $tag{'author'} = $1;
1418                         $tag{'epoch'} = $2;
1419                         $tag{'tz'} = $3;
1420                 } elsif ($line =~ m/--BEGIN/) {
1421                         push @comment, $line;
1422                         last;
1423                 } elsif ($line eq "") {
1424                         last;
1425                 }
1426         }
1427         push @comment, <$fd>;
1428         $tag{'comment'} = \@comment;
1429         close $fd or return;
1430         if (!defined $tag{'name'}) {
1431                 return
1432         };
1433         return %tag
1434 }
1435
1436 sub parse_commit_text {
1437         my ($commit_text, $withparents) = @_;
1438         my @commit_lines = split '\n', $commit_text;
1439         my %co;
1440
1441         pop @commit_lines; # Remove '\0'
1442
1443         if (! @commit_lines) {
1444                 return;
1445         }
1446
1447         my $header = shift @commit_lines;
1448         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1449                 return;
1450         }
1451         ($co{'id'}, my @parents) = split ' ', $header;
1452         while (my $line = shift @commit_lines) {
1453                 last if $line eq "\n";
1454                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1455                         $co{'tree'} = $1;
1456                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1457                         push @parents, $1;
1458                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1459                         $co{'author'} = $1;
1460                         $co{'author_epoch'} = $2;
1461                         $co{'author_tz'} = $3;
1462                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1463                                 $co{'author_name'}  = $1;
1464                                 $co{'author_email'} = $2;
1465                         } else {
1466                                 $co{'author_name'} = $co{'author'};
1467                         }
1468                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1469                         $co{'committer'} = $1;
1470                         $co{'committer_epoch'} = $2;
1471                         $co{'committer_tz'} = $3;
1472                         $co{'committer_name'} = $co{'committer'};
1473                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1474                                 $co{'committer_name'}  = $1;
1475                                 $co{'committer_email'} = $2;
1476                         } else {
1477                                 $co{'committer_name'} = $co{'committer'};
1478                         }
1479                 }
1480         }
1481         if (!defined $co{'tree'}) {
1482                 return;
1483         };
1484         $co{'parents'} = \@parents;
1485         $co{'parent'} = $parents[0];
1486
1487         foreach my $title (@commit_lines) {
1488                 $title =~ s/^    //;
1489                 if ($title ne "") {
1490                         $co{'title'} = chop_str($title, 80, 5);
1491                         # remove leading stuff of merges to make the interesting part visible
1492                         if (length($title) > 50) {
1493                                 $title =~ s/^Automatic //;
1494                                 $title =~ s/^merge (of|with) /Merge ... /i;
1495                                 if (length($title) > 50) {
1496                                         $title =~ s/(http|rsync):\/\///;
1497                                 }
1498                                 if (length($title) > 50) {
1499                                         $title =~ s/(master|www|rsync)\.//;
1500                                 }
1501                                 if (length($title) > 50) {
1502                                         $title =~ s/kernel.org:?//;
1503                                 }
1504                                 if (length($title) > 50) {
1505                                         $title =~ s/\/pub\/scm//;
1506                                 }
1507                         }
1508                         $co{'title_short'} = chop_str($title, 50, 5);
1509                         last;
1510                 }
1511         }
1512         if ($co{'title'} eq "") {
1513                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1514         }
1515         # remove added spaces
1516         foreach my $line (@commit_lines) {
1517                 $line =~ s/^    //;
1518         }
1519         $co{'comment'} = \@commit_lines;
1520
1521         my $age = time - $co{'committer_epoch'};
1522         $co{'age'} = $age;
1523         $co{'age_string'} = age_string($age);
1524         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1525         if ($age > 60*60*24*7*2) {
1526                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1527                 $co{'age_string_age'} = $co{'age_string'};
1528         } else {
1529                 $co{'age_string_date'} = $co{'age_string'};
1530                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1531         }
1532         return %co;
1533 }
1534
1535 sub parse_commit {
1536         my ($commit_id) = @_;
1537         my %co;
1538
1539         local $/ = "\0";
1540
1541         open my $fd, "-|", git_cmd(), "rev-list",
1542                 "--parents",
1543                 "--header",
1544                 "--max-count=1",
1545                 $commit_id,
1546                 "--",
1547                 or die_error(undef, "Open git-rev-list failed");
1548         %co = parse_commit_text(<$fd>, 1);
1549         close $fd;
1550
1551         return %co;
1552 }
1553
1554 sub parse_commits {
1555         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1556         my @cos;
1557
1558         $maxcount ||= 1;
1559         $skip ||= 0;
1560
1561         local $/ = "\0";
1562
1563         open my $fd, "-|", git_cmd(), "rev-list",
1564                 "--header",
1565                 ($arg ? ($arg) : ()),
1566                 ("--max-count=" . $maxcount),
1567                 ("--skip=" . $skip),
1568                 $commit_id,
1569                 "--",
1570                 ($filename ? ($filename) : ())
1571                 or die_error(undef, "Open git-rev-list failed");
1572         while (my $line = <$fd>) {
1573                 my %co = parse_commit_text($line);
1574                 push @cos, \%co;
1575         }
1576         close $fd;
1577
1578         return wantarray ? @cos : \@cos;
1579 }
1580
1581 # parse ref from ref_file, given by ref_id, with given type
1582 sub parse_ref {
1583         my $ref_file = shift;
1584         my $ref_id = shift;
1585         my $type = shift || git_get_type($ref_id);
1586         my %ref_item;
1587
1588         $ref_item{'type'} = $type;
1589         $ref_item{'id'} = $ref_id;
1590         $ref_item{'epoch'} = 0;
1591         $ref_item{'age'} = "unknown";
1592         if ($type eq "tag") {
1593                 my %tag = parse_tag($ref_id);
1594                 $ref_item{'comment'} = $tag{'comment'};
1595                 if ($tag{'type'} eq "commit") {
1596                         my %co = parse_commit($tag{'object'});
1597                         $ref_item{'epoch'} = $co{'committer_epoch'};
1598                         $ref_item{'age'} = $co{'age_string'};
1599                 } elsif (defined($tag{'epoch'})) {
1600                         my $age = time - $tag{'epoch'};
1601                         $ref_item{'epoch'} = $tag{'epoch'};
1602                         $ref_item{'age'} = age_string($age);
1603                 }
1604                 $ref_item{'reftype'} = $tag{'type'};
1605                 $ref_item{'name'} = $tag{'name'};
1606                 $ref_item{'refid'} = $tag{'object'};
1607         } elsif ($type eq "commit"){
1608                 my %co = parse_commit($ref_id);
1609                 $ref_item{'reftype'} = "commit";
1610                 $ref_item{'name'} = $ref_file;
1611                 $ref_item{'title'} = $co{'title'};
1612                 $ref_item{'refid'} = $ref_id;
1613                 $ref_item{'epoch'} = $co{'committer_epoch'};
1614                 $ref_item{'age'} = $co{'age_string'};
1615         } else {
1616                 $ref_item{'reftype'} = $type;
1617                 $ref_item{'name'} = $ref_file;
1618                 $ref_item{'refid'} = $ref_id;
1619         }
1620
1621         return %ref_item;
1622 }
1623
1624 # parse line of git-diff-tree "raw" output
1625 sub parse_difftree_raw_line {
1626         my $line = shift;
1627         my %res;
1628
1629         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1630         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1631         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1632                 $res{'from_mode'} = $1;
1633                 $res{'to_mode'} = $2;
1634                 $res{'from_id'} = $3;
1635                 $res{'to_id'} = $4;
1636                 $res{'status'} = $5;
1637                 $res{'similarity'} = $6;
1638                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1639                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1640                 } else {
1641                         $res{'file'} = unquote($7);
1642                 }
1643         }
1644         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1645         # combined diff (for merge commit)
1646         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1647                 $res{'nparents'}  = length($1);
1648                 $res{'from_mode'} = [ split(' ', $2) ];
1649                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1650                 $res{'from_id'} = [ split(' ', $3) ];
1651                 $res{'to_id'} = pop @{$res{'from_id'}};
1652                 $res{'status'} = [ split('', $4) ];
1653                 $res{'to_file'} = unquote($5);
1654         }
1655         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1656         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1657                 $res{'commit'} = $1;
1658         }
1659
1660         return wantarray ? %res : \%res;
1661 }
1662
1663 # parse line of git-ls-tree output
1664 sub parse_ls_tree_line ($;%) {
1665         my $line = shift;
1666         my %opts = @_;
1667         my %res;
1668
1669         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1670         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1671
1672         $res{'mode'} = $1;
1673         $res{'type'} = $2;
1674         $res{'hash'} = $3;
1675         if ($opts{'-z'}) {
1676                 $res{'name'} = $4;
1677         } else {
1678                 $res{'name'} = unquote($4);
1679         }
1680
1681         return wantarray ? %res : \%res;
1682 }
1683
1684 ## ......................................................................
1685 ## parse to array of hashes functions
1686
1687 sub git_get_heads_list {
1688         my $limit = shift;
1689         my @headslist;
1690
1691         open my $fd, '-|', git_cmd(), 'for-each-ref',
1692                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1693                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1694                 'refs/heads'
1695                 or return;
1696         while (my $line = <$fd>) {
1697                 my %ref_item;
1698
1699                 chomp $line;
1700                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1701                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1702                 my ($committer, $epoch, $tz) =
1703                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1704                 $name =~ s!^refs/heads/!!;
1705
1706                 $ref_item{'name'}  = $name;
1707                 $ref_item{'id'}    = $hash;
1708                 $ref_item{'title'} = $title || '(no commit message)';
1709                 $ref_item{'epoch'} = $epoch;
1710                 if ($epoch) {
1711                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1712                 } else {
1713                         $ref_item{'age'} = "unknown";
1714                 }
1715
1716                 push @headslist, \%ref_item;
1717         }
1718         close $fd;
1719
1720         return wantarray ? @headslist : \@headslist;
1721 }
1722
1723 sub git_get_tags_list {
1724         my $limit = shift;
1725         my @tagslist;
1726
1727         open my $fd, '-|', git_cmd(), 'for-each-ref',
1728                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1729                 '--format=%(objectname) %(objecttype) %(refname) '.
1730                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1731                 'refs/tags'
1732                 or return;
1733         while (my $line = <$fd>) {
1734                 my %ref_item;
1735
1736                 chomp $line;
1737                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1738                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1739                 my ($creator, $epoch, $tz) =
1740                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1741                 $name =~ s!^refs/tags/!!;
1742
1743                 $ref_item{'type'} = $type;
1744                 $ref_item{'id'} = $id;
1745                 $ref_item{'name'} = $name;
1746                 if ($type eq "tag") {
1747                         $ref_item{'subject'} = $title;
1748                         $ref_item{'reftype'} = $reftype;
1749                         $ref_item{'refid'}   = $refid;
1750                 } else {
1751                         $ref_item{'reftype'} = $type;
1752                         $ref_item{'refid'}   = $id;
1753                 }
1754
1755                 if ($type eq "tag" || $type eq "commit") {
1756                         $ref_item{'epoch'} = $epoch;
1757                         if ($epoch) {
1758                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1759                         } else {
1760                                 $ref_item{'age'} = "unknown";
1761                         }
1762                 }
1763
1764                 push @tagslist, \%ref_item;
1765         }
1766         close $fd;
1767
1768         return wantarray ? @tagslist : \@tagslist;
1769 }
1770
1771 ## ----------------------------------------------------------------------
1772 ## filesystem-related functions
1773
1774 sub get_file_owner {
1775         my $path = shift;
1776
1777         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1778         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1779         if (!defined $gcos) {
1780                 return undef;
1781         }
1782         my $owner = $gcos;
1783         $owner =~ s/[,;].*$//;
1784         return to_utf8($owner);
1785 }
1786
1787 ## ......................................................................
1788 ## mimetype related functions
1789
1790 sub mimetype_guess_file {
1791         my $filename = shift;
1792         my $mimemap = shift;
1793         -r $mimemap or return undef;
1794
1795         my %mimemap;
1796         open(MIME, $mimemap) or return undef;
1797         while (<MIME>) {
1798                 next if m/^#/; # skip comments
1799                 my ($mime, $exts) = split(/\t+/);
1800                 if (defined $exts) {
1801                         my @exts = split(/\s+/, $exts);
1802                         foreach my $ext (@exts) {
1803                                 $mimemap{$ext} = $mime;
1804                         }
1805                 }
1806         }
1807         close(MIME);
1808
1809         $filename =~ /\.([^.]*)$/;
1810         return $mimemap{$1};
1811 }
1812
1813 sub mimetype_guess {
1814         my $filename = shift;
1815         my $mime;
1816         $filename =~ /\./ or return undef;
1817
1818         if ($mimetypes_file) {
1819                 my $file = $mimetypes_file;
1820                 if ($file !~ m!^/!) { # if it is relative path
1821                         # it is relative to project
1822                         $file = "$projectroot/$project/$file";
1823                 }
1824                 $mime = mimetype_guess_file($filename, $file);
1825         }
1826         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1827         return $mime;
1828 }
1829
1830 sub blob_mimetype {
1831         my $fd = shift;
1832         my $filename = shift;
1833
1834         if ($filename) {
1835                 my $mime = mimetype_guess($filename);
1836                 $mime and return $mime;
1837         }
1838
1839         # just in case
1840         return $default_blob_plain_mimetype unless $fd;
1841
1842         if (-T $fd) {
1843                 return 'text/plain' .
1844                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1845         } elsif (! $filename) {
1846                 return 'application/octet-stream';
1847         } elsif ($filename =~ m/\.png$/i) {
1848                 return 'image/png';
1849         } elsif ($filename =~ m/\.gif$/i) {
1850                 return 'image/gif';
1851         } elsif ($filename =~ m/\.jpe?g$/i) {
1852                 return 'image/jpeg';
1853         } else {
1854                 return 'application/octet-stream';
1855         }
1856 }
1857
1858 ## ======================================================================
1859 ## functions printing HTML: header, footer, error page
1860
1861 sub git_header_html {
1862         my $status = shift || "200 OK";
1863         my $expires = shift;
1864
1865         my $title = "$site_name";
1866         if (defined $project) {
1867                 $title .= " - " . to_utf8($project);
1868                 if (defined $action) {
1869                         $title .= "/$action";
1870                         if (defined $file_name) {
1871                                 $title .= " - " . esc_path($file_name);
1872                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1873                                         $title .= "/";
1874                                 }
1875                         }
1876                 }
1877         }
1878         my $content_type;
1879         # require explicit support from the UA if we are to send the page as
1880         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1881         # we have to do this because MSIE sometimes globs '*/*', pretending to
1882         # support xhtml+xml but choking when it gets what it asked for.
1883         if (defined $cgi->http('HTTP_ACCEPT') &&
1884             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1885             $cgi->Accept('application/xhtml+xml') != 0) {
1886                 $content_type = 'application/xhtml+xml';
1887         } else {
1888                 $content_type = 'text/html';
1889         }
1890         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1891                            -status=> $status, -expires => $expires);
1892         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1893         print <<EOF;
1894 <?xml version="1.0" encoding="utf-8"?>
1895 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1896 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1897 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1898 <!-- git core binaries version $git_version -->
1899 <head>
1900 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1901 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1902 <meta name="robots" content="index, nofollow"/>
1903 <title>$title</title>
1904 EOF
1905 # print out each stylesheet that exist
1906         if (defined $stylesheet) {
1907 #provides backwards capability for those people who define style sheet in a config file
1908                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1909         } else {
1910                 foreach my $stylesheet (@stylesheets) {
1911                         next unless $stylesheet;
1912                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1913                 }
1914         }
1915         if (defined $project) {
1916                 printf('<link rel="alternate" title="%s log RSS feed" '.
1917                        'href="%s" type="application/rss+xml" />'."\n",
1918                        esc_param($project), href(action=>"rss"));
1919                 printf('<link rel="alternate" title="%s log Atom feed" '.
1920                        'href="%s" type="application/atom+xml" />'."\n",
1921                        esc_param($project), href(action=>"atom"));
1922         } else {
1923                 printf('<link rel="alternate" title="%s projects list" '.
1924                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1925                        $site_name, href(project=>undef, action=>"project_index"));
1926                 printf('<link rel="alternate" title="%s projects feeds" '.
1927                        'href="%s" type="text/x-opml"/>'."\n",
1928                        $site_name, href(project=>undef, action=>"opml"));
1929         }
1930         if (defined $favicon) {
1931                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1932         }
1933
1934         print "</head>\n" .
1935               "<body>\n";
1936
1937         if (-f $site_header) {
1938                 open (my $fd, $site_header);
1939                 print <$fd>;
1940                 close $fd;
1941         }
1942
1943         print "<div class=\"page_header\">\n" .
1944               $cgi->a({-href => esc_url($logo_url),
1945                        -title => $logo_label},
1946                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1947         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1948         if (defined $project) {
1949                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1950                 if (defined $action) {
1951                         print " / $action";
1952                 }
1953                 print "\n";
1954         }
1955         print "</div>\n";
1956
1957         my ($have_search) = gitweb_check_feature('search');
1958         if ((defined $project) && ($have_search)) {
1959                 if (!defined $searchtext) {
1960                         $searchtext = "";
1961                 }
1962                 my $search_hash;
1963                 if (defined $hash_base) {
1964                         $search_hash = $hash_base;
1965                 } elsif (defined $hash) {
1966                         $search_hash = $hash;
1967                 } else {
1968                         $search_hash = "HEAD";
1969                 }
1970                 $cgi->param("a", "search");
1971                 $cgi->param("h", $search_hash);
1972                 $cgi->param("p", $project);
1973                 print $cgi->startform(-method => "get", -action => $my_uri) .
1974                       "<div class=\"search\">\n" .
1975                       $cgi->hidden(-name => "p") . "\n" .
1976                       $cgi->hidden(-name => "a") . "\n" .
1977                       $cgi->hidden(-name => "h") . "\n" .
1978                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1979                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
1980                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1981                       " search:\n",
1982                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1983                       "</div>" .
1984                       $cgi->end_form() . "\n";
1985         }
1986 }
1987
1988 sub git_footer_html {
1989         print "<div class=\"page_footer\">\n";
1990         if (defined $project) {
1991                 my $descr = git_get_project_description($project);
1992                 if (defined $descr) {
1993                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1994                 }
1995                 print $cgi->a({-href => href(action=>"rss"),
1996                               -class => "rss_logo"}, "RSS") . " ";
1997                 print $cgi->a({-href => href(action=>"atom"),
1998                               -class => "rss_logo"}, "Atom") . "\n";
1999         } else {
2000                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2001                               -class => "rss_logo"}, "OPML") . " ";
2002                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2003                               -class => "rss_logo"}, "TXT") . "\n";
2004         }
2005         print "</div>\n" ;
2006
2007         if (-f $site_footer) {
2008                 open (my $fd, $site_footer);
2009                 print <$fd>;
2010                 close $fd;
2011         }
2012
2013         print "</body>\n" .
2014               "</html>";
2015 }
2016
2017 sub die_error {
2018         my $status = shift || "403 Forbidden";
2019         my $error = shift || "Malformed query, file missing or permission denied";
2020
2021         git_header_html($status);
2022         print <<EOF;
2023 <div class="page_body">
2024 <br /><br />
2025 $status - $error
2026 <br />
2027 </div>
2028 EOF
2029         git_footer_html();
2030         exit;
2031 }
2032
2033 ## ----------------------------------------------------------------------
2034 ## functions printing or outputting HTML: navigation
2035
2036 sub git_print_page_nav {
2037         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2038         $extra = '' if !defined $extra; # pager or formats
2039
2040         my @navs = qw(summary shortlog log commit commitdiff tree);
2041         if ($suppress) {
2042                 @navs = grep { $_ ne $suppress } @navs;
2043         }
2044
2045         my %arg = map { $_ => {action=>$_} } @navs;
2046         if (defined $head) {
2047                 for (qw(commit commitdiff)) {
2048                         $arg{$_}{'hash'} = $head;
2049                 }
2050                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2051                         for (qw(shortlog log)) {
2052                                 $arg{$_}{'hash'} = $head;
2053                         }
2054                 }
2055         }
2056         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2057         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2058
2059         print "<div class=\"page_nav\">\n" .
2060                 (join " | ",
2061                  map { $_ eq $current ?
2062                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2063                  } @navs);
2064         print "<br/>\n$extra<br/>\n" .
2065               "</div>\n";
2066 }
2067
2068 sub format_paging_nav {
2069         my ($action, $hash, $head, $page, $nrevs) = @_;
2070         my $paging_nav;
2071
2072
2073         if ($hash ne $head || $page) {
2074                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2075         } else {
2076                 $paging_nav .= "HEAD";
2077         }
2078
2079         if ($page > 0) {
2080                 $paging_nav .= " &sdot; " .
2081                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2082                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2083         } else {
2084                 $paging_nav .= " &sdot; prev";
2085         }
2086
2087         if ($nrevs >= (100 * ($page+1)-1)) {
2088                 $paging_nav .= " &sdot; " .
2089                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2090                                  -accesskey => "n", -title => "Alt-n"}, "next");
2091         } else {
2092                 $paging_nav .= " &sdot; next";
2093         }
2094
2095         return $paging_nav;
2096 }
2097
2098 ## ......................................................................
2099 ## functions printing or outputting HTML: div
2100
2101 sub git_print_header_div {
2102         my ($action, $title, $hash, $hash_base) = @_;
2103         my %args = ();
2104
2105         $args{'action'} = $action;
2106         $args{'hash'} = $hash if $hash;
2107         $args{'hash_base'} = $hash_base if $hash_base;
2108
2109         print "<div class=\"header\">\n" .
2110               $cgi->a({-href => href(%args), -class => "title"},
2111               $title ? $title : $action) .
2112               "\n</div>\n";
2113 }
2114
2115 #sub git_print_authorship (\%) {
2116 sub git_print_authorship {
2117         my $co = shift;
2118
2119         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2120         print "<div class=\"author_date\">" .
2121               esc_html($co->{'author_name'}) .
2122               " [$ad{'rfc2822'}";
2123         if ($ad{'hour_local'} < 6) {
2124                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2125                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2126         } else {
2127                 printf(" (%02d:%02d %s)",
2128                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2129         }
2130         print "]</div>\n";
2131 }
2132
2133 sub git_print_page_path {
2134         my $name = shift;
2135         my $type = shift;
2136         my $hb = shift;
2137
2138
2139         print "<div class=\"page_path\">";
2140         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2141                       -title => 'tree root'}, to_utf8("[$project]"));
2142         print " / ";
2143         if (defined $name) {
2144                 my @dirname = split '/', $name;
2145                 my $basename = pop @dirname;
2146                 my $fullname = '';
2147
2148                 foreach my $dir (@dirname) {
2149                         $fullname .= ($fullname ? '/' : '') . $dir;
2150                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2151                                                      hash_base=>$hb),
2152                                       -title => $fullname}, esc_path($dir));
2153                         print " / ";
2154                 }
2155                 if (defined $type && $type eq 'blob') {
2156                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2157                                                      hash_base=>$hb),
2158                                       -title => $name}, esc_path($basename));
2159                 } elsif (defined $type && $type eq 'tree') {
2160                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2161                                                      hash_base=>$hb),
2162                                       -title => $name}, esc_path($basename));
2163                         print " / ";
2164                 } else {
2165                         print esc_path($basename);
2166                 }
2167         }
2168         print "<br/></div>\n";
2169 }
2170
2171 # sub git_print_log (\@;%) {
2172 sub git_print_log ($;%) {
2173         my $log = shift;
2174         my %opts = @_;
2175
2176         if ($opts{'-remove_title'}) {
2177                 # remove title, i.e. first line of log
2178                 shift @$log;
2179         }
2180         # remove leading empty lines
2181         while (defined $log->[0] && $log->[0] eq "") {
2182                 shift @$log;
2183         }
2184
2185         # print log
2186         my $signoff = 0;
2187         my $empty = 0;
2188         foreach my $line (@$log) {
2189                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2190                         $signoff = 1;
2191                         $empty = 0;
2192                         if (! $opts{'-remove_signoff'}) {
2193                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2194                                 next;
2195                         } else {
2196                                 # remove signoff lines
2197                                 next;
2198                         }
2199                 } else {
2200                         $signoff = 0;
2201                 }
2202
2203                 # print only one empty line
2204                 # do not print empty line after signoff
2205                 if ($line eq "") {
2206                         next if ($empty || $signoff);
2207                         $empty = 1;
2208                 } else {
2209                         $empty = 0;
2210                 }
2211
2212                 print format_log_line_html($line) . "<br/>\n";
2213         }
2214
2215         if ($opts{'-final_empty_line'}) {
2216                 # end with single empty line
2217                 print "<br/>\n" unless $empty;
2218         }
2219 }
2220
2221 # return link target (what link points to)
2222 sub git_get_link_target {
2223         my $hash = shift;
2224         my $link_target;
2225
2226         # read link
2227         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2228                 or return;
2229         {
2230                 local $/;
2231                 $link_target = <$fd>;
2232         }
2233         close $fd
2234                 or return;
2235
2236         return $link_target;
2237 }
2238
2239 # given link target, and the directory (basedir) the link is in,
2240 # return target of link relative to top directory (top tree);
2241 # return undef if it is not possible (including absolute links).
2242 sub normalize_link_target {
2243         my ($link_target, $basedir, $hash_base) = @_;
2244
2245         # we can normalize symlink target only if $hash_base is provided
2246         return unless $hash_base;
2247
2248         # absolute symlinks (beginning with '/') cannot be normalized
2249         return if (substr($link_target, 0, 1) eq '/');
2250
2251         # normalize link target to path from top (root) tree (dir)
2252         my $path;
2253         if ($basedir) {
2254                 $path = $basedir . '/' . $link_target;
2255         } else {
2256                 # we are in top (root) tree (dir)
2257                 $path = $link_target;
2258         }
2259
2260         # remove //, /./, and /../
2261         my @path_parts;
2262         foreach my $part (split('/', $path)) {
2263                 # discard '.' and ''
2264                 next if (!$part || $part eq '.');
2265                 # handle '..'
2266                 if ($part eq '..') {
2267                         if (@path_parts) {
2268                                 pop @path_parts;
2269                         } else {
2270                                 # link leads outside repository (outside top dir)
2271                                 return;
2272                         }
2273                 } else {
2274                         push @path_parts, $part;
2275                 }
2276         }
2277         $path = join('/', @path_parts);
2278
2279         return $path;
2280 }
2281
2282 # print tree entry (row of git_tree), but without encompassing <tr> element
2283 sub git_print_tree_entry {
2284         my ($t, $basedir, $hash_base, $have_blame) = @_;
2285
2286         my %base_key = ();
2287         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2288
2289         # The format of a table row is: mode list link.  Where mode is
2290         # the mode of the entry, list is the name of the entry, an href,
2291         # and link is the action links of the entry.
2292
2293         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2294         if ($t->{'type'} eq "blob") {
2295                 print "<td class=\"list\">" .
2296                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2297                                                file_name=>"$basedir$t->{'name'}", %base_key),
2298                                 -class => "list"}, esc_path($t->{'name'}));
2299                 if (S_ISLNK(oct $t->{'mode'})) {
2300                         my $link_target = git_get_link_target($t->{'hash'});
2301                         if ($link_target) {
2302                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2303                                 if (defined $norm_target) {
2304                                         print " -> " .
2305                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2306                                                                      file_name=>$norm_target),
2307                                                        -title => $norm_target}, esc_path($link_target));
2308                                 } else {
2309                                         print " -> " . esc_path($link_target);
2310                                 }
2311                         }
2312                 }
2313                 print "</td>\n";
2314                 print "<td class=\"link\">";
2315                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2316                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2317                               "blob");
2318                 if ($have_blame) {
2319                         print " | " .
2320                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2321                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2322                                       "blame");
2323                 }
2324                 if (defined $hash_base) {
2325                         print " | " .
2326                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2327                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2328                                       "history");
2329                 }
2330                 print " | " .
2331                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2332                                                file_name=>"$basedir$t->{'name'}")},
2333                                 "raw");
2334                 print "</td>\n";
2335
2336         } elsif ($t->{'type'} eq "tree") {
2337                 print "<td class=\"list\">";
2338                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2339                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2340                               esc_path($t->{'name'}));
2341                 print "</td>\n";
2342                 print "<td class=\"link\">";
2343                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2344                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2345                               "tree");
2346                 if (defined $hash_base) {
2347                         print " | " .
2348                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2349                                                      file_name=>"$basedir$t->{'name'}")},
2350                                       "history");
2351                 }
2352                 print "</td>\n";
2353         }
2354 }
2355
2356 ## ......................................................................
2357 ## functions printing large fragments of HTML
2358
2359 sub fill_from_file_info {
2360         my ($diff, @parents) = @_;
2361
2362         $diff->{'from_file'} = [ ];
2363         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2364         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2365                 if ($diff->{'status'}[$i] eq 'R' ||
2366                     $diff->{'status'}[$i] eq 'C') {
2367                         $diff->{'from_file'}[$i] =
2368                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2369                 }
2370         }
2371
2372         return $diff;
2373 }
2374
2375 # parameters can be strings, or references to arrays of strings
2376 sub from_ids_eq {
2377         my ($a, $b) = @_;
2378
2379         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2380                 for (my $i = 0; $i < @$a; ++$i) {
2381                         return 0 unless ($a->[$i] eq $b->[$i]);
2382                 }
2383                 return 1;
2384         } elsif (!ref($a) && !ref($b)) {
2385                 return $a eq $b;
2386         } else {
2387                 return 0;
2388         }
2389 }
2390
2391
2392 sub git_difftree_body {
2393         my ($difftree, $hash, @parents) = @_;
2394         my ($parent) = $parents[0];
2395         my ($have_blame) = gitweb_check_feature('blame');
2396         print "<div class=\"list_head\">\n";
2397         if ($#{$difftree} > 10) {
2398                 print(($#{$difftree} + 1) . " files changed:\n");
2399         }
2400         print "</div>\n";
2401
2402         print "<table class=\"" .
2403               (@parents > 1 ? "combined " : "") .
2404               "diff_tree\">\n";
2405
2406         # header only for combined diff in 'commitdiff' view
2407         my $has_header = @parents > 1 && $action eq 'commitdiff';
2408         if ($has_header) {
2409                 # table header
2410                 print "<thead><tr>\n" .
2411                        "<th></th><th></th>\n"; # filename, patchN link
2412                 for (my $i = 0; $i < @parents; $i++) {
2413                         my $par = $parents[$i];
2414                         print "<th>" .
2415                               $cgi->a({-href => href(action=>"commitdiff",
2416                                                      hash=>$hash, hash_parent=>$par),
2417                                        -title => 'commitdiff to parent number ' .
2418                                                   ($i+1) . ': ' . substr($par,0,7)},
2419                                       $i+1) .
2420                               "&nbsp;</th>\n";
2421                 }
2422                 print "</tr></thead>\n<tbody>\n";
2423         }
2424
2425         my $alternate = 1;
2426         my $patchno = 0;
2427         foreach my $line (@{$difftree}) {
2428                 my $diff;
2429                 if (ref($line) eq "HASH") {
2430                         # pre-parsed (or generated by hand)
2431                         $diff = $line;
2432                 } else {
2433                         $diff = parse_difftree_raw_line($line);
2434                 }
2435
2436                 if ($alternate) {
2437                         print "<tr class=\"dark\">\n";
2438                 } else {
2439                         print "<tr class=\"light\">\n";
2440                 }
2441                 $alternate ^= 1;
2442
2443                 if (exists $diff->{'nparents'}) { # combined diff
2444
2445                         fill_from_file_info($diff, @parents)
2446                                 unless exists $diff->{'from_file'};
2447
2448                         if ($diff->{'to_id'} ne ('0' x 40)) {
2449                                 # file exists in the result (child) commit
2450                                 print "<td>" .
2451                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2452                                                              file_name=>$diff->{'to_file'},
2453                                                              hash_base=>$hash),
2454                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2455                                       "</td>\n";
2456                         } else {
2457                                 print "<td>" .
2458                                       esc_path($diff->{'to_file'}) .
2459                                       "</td>\n";
2460                         }
2461
2462                         if ($action eq 'commitdiff') {
2463                                 # link to patch
2464                                 $patchno++;
2465                                 print "<td class=\"link\">" .
2466                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2467                                       " | " .
2468                                       "</td>\n";
2469                         }
2470
2471                         my $has_history = 0;
2472                         my $not_deleted = 0;
2473                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2474                                 my $hash_parent = $parents[$i];
2475                                 my $from_hash = $diff->{'from_id'}[$i];
2476                                 my $from_path = $diff->{'from_file'}[$i];
2477                                 my $status = $diff->{'status'}[$i];
2478
2479                                 $has_history ||= ($status ne 'A');
2480                                 $not_deleted ||= ($status ne 'D');
2481
2482                                 if ($status eq 'A') {
2483                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2484                                 } elsif ($status eq 'D') {
2485                                         print "<td class=\"link\">" .
2486                                               $cgi->a({-href => href(action=>"blob",
2487                                                                      hash_base=>$hash,
2488                                                                      hash=>$from_hash,
2489                                                                      file_name=>$from_path)},
2490                                                       "blob" . ($i+1)) .
2491                                               " | </td>\n";
2492                                 } else {
2493                                         if ($diff->{'to_id'} eq $from_hash) {
2494                                                 print "<td class=\"link nochange\">";
2495                                         } else {
2496                                                 print "<td class=\"link\">";
2497                                         }
2498                                         print $cgi->a({-href => href(action=>"blobdiff",
2499                                                                      hash=>$diff->{'to_id'},
2500                                                                      hash_parent=>$from_hash,
2501                                                                      hash_base=>$hash,
2502                                                                      hash_parent_base=>$hash_parent,
2503                                                                      file_name=>$diff->{'to_file'},
2504                                                                      file_parent=>$from_path)},
2505                                                       "diff" . ($i+1)) .
2506                                               " | </td>\n";
2507                                 }
2508                         }
2509
2510                         print "<td class=\"link\">";
2511                         if ($not_deleted) {
2512                                 print $cgi->a({-href => href(action=>"blob",
2513                                                              hash=>$diff->{'to_id'},
2514                                                              file_name=>$diff->{'to_file'},
2515                                                              hash_base=>$hash)},
2516                                               "blob");
2517                                 print " | " if ($has_history);
2518                         }
2519                         if ($has_history) {
2520                                 print $cgi->a({-href => href(action=>"history",
2521                                                              file_name=>$diff->{'to_file'},
2522                                                              hash_base=>$hash)},
2523                                               "history");
2524                         }
2525                         print "</td>\n";
2526
2527                         print "</tr>\n";
2528                         next; # instead of 'else' clause, to avoid extra indent
2529                 }
2530                 # else ordinary diff
2531
2532                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2533                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2534                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2535                         $to_mode_oct = oct $diff->{'to_mode'};
2536                         if (S_ISREG($to_mode_oct)) { # only for regular file
2537                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2538                         }
2539                         $to_file_type = file_type($diff->{'to_mode'});
2540                 }
2541                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2542                         $from_mode_oct = oct $diff->{'from_mode'};
2543                         if (S_ISREG($to_mode_oct)) { # only for regular file
2544                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2545                         }
2546                         $from_file_type = file_type($diff->{'from_mode'});
2547                 }
2548
2549                 if ($diff->{'status'} eq "A") { # created
2550                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2551                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2552                         $mode_chng   .= "]</span>";
2553                         print "<td>";
2554                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2555                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2556                                       -class => "list"}, esc_path($diff->{'file'}));
2557                         print "</td>\n";
2558                         print "<td>$mode_chng</td>\n";
2559                         print "<td class=\"link\">";
2560                         if ($action eq 'commitdiff') {
2561                                 # link to patch
2562                                 $patchno++;
2563                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2564                                 print " | ";
2565                         }
2566                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2567                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2568                                       "blob");
2569                         print "</td>\n";
2570
2571                 } elsif ($diff->{'status'} eq "D") { # deleted
2572                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2573                         print "<td>";
2574                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2575                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2576                                        -class => "list"}, esc_path($diff->{'file'}));
2577                         print "</td>\n";
2578                         print "<td>$mode_chng</td>\n";
2579                         print "<td class=\"link\">";
2580                         if ($action eq 'commitdiff') {
2581                                 # link to patch
2582                                 $patchno++;
2583                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2584                                 print " | ";
2585                         }
2586                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2587                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2588                                       "blob") . " | ";
2589                         if ($have_blame) {
2590                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2591                                                              file_name=>$diff->{'file'})},
2592                                               "blame") . " | ";
2593                         }
2594                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2595                                                      file_name=>$diff->{'file'})},
2596                                       "history");
2597                         print "</td>\n";
2598
2599                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2600                         my $mode_chnge = "";
2601                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2602                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2603                                 if ($from_file_type ne $to_file_type) {
2604                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2605                                 }
2606                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2607                                         if ($from_mode_str && $to_mode_str) {
2608                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2609                                         } elsif ($to_mode_str) {
2610                                                 $mode_chnge .= " mode: $to_mode_str";
2611                                         }
2612                                 }
2613                                 $mode_chnge .= "]</span>\n";
2614                         }
2615                         print "<td>";
2616                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2617                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2618                                       -class => "list"}, esc_path($diff->{'file'}));
2619                         print "</td>\n";
2620                         print "<td>$mode_chnge</td>\n";
2621                         print "<td class=\"link\">";
2622                         if ($action eq 'commitdiff') {
2623                                 # link to patch
2624                                 $patchno++;
2625                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2626                                       " | ";
2627                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2628                                 # "commit" view and modified file (not onlu mode changed)
2629                                 print $cgi->a({-href => href(action=>"blobdiff",
2630                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2631                                                              hash_base=>$hash, hash_parent_base=>$parent,
2632                                                              file_name=>$diff->{'file'})},
2633                                               "diff") .
2634                                       " | ";
2635                         }
2636                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2637                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2638                                        "blob") . " | ";
2639                         if ($have_blame) {
2640                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2641                                                              file_name=>$diff->{'file'})},
2642                                               "blame") . " | ";
2643                         }
2644                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2645                                                      file_name=>$diff->{'file'})},
2646                                       "history");
2647                         print "</td>\n";
2648
2649                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2650                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2651                         my $nstatus = $status_name{$diff->{'status'}};
2652                         my $mode_chng = "";
2653                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2654                                 # mode also for directories, so we cannot use $to_mode_str
2655                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2656                         }
2657                         print "<td>" .
2658                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2659                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2660                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2661                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2662                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2663                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2664                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2665                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2666                               "<td class=\"link\">";
2667                         if ($action eq 'commitdiff') {
2668                                 # link to patch
2669                                 $patchno++;
2670                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2671                                       " | ";
2672                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2673                                 # "commit" view and modified file (not only pure rename or copy)
2674                                 print $cgi->a({-href => href(action=>"blobdiff",
2675                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2676                                                              hash_base=>$hash, hash_parent_base=>$parent,
2677                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2678                                               "diff") .
2679                                       " | ";
2680                         }
2681                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2682                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2683                                       "blob") . " | ";
2684                         if ($have_blame) {
2685                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2686                                                              file_name=>$diff->{'to_file'})},
2687                                               "blame") . " | ";
2688                         }
2689                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2690                                                     file_name=>$diff->{'to_file'})},
2691                                       "history");
2692                         print "</td>\n";
2693
2694                 } # we should not encounter Unmerged (U) or Unknown (X) status
2695                 print "</tr>\n";
2696         }
2697         print "</tbody>" if $has_header;
2698         print "</table>\n";
2699 }
2700
2701 sub git_patchset_body {
2702         my ($fd, $difftree, $hash, @hash_parents) = @_;
2703         my ($hash_parent) = $hash_parents[0];
2704
2705         my $patch_idx = 0;
2706         my $patch_number = 0;
2707         my $patch_line;
2708         my $diffinfo;
2709         my (%from, %to);
2710
2711         print "<div class=\"patchset\">\n";
2712
2713         # skip to first patch
2714         while ($patch_line = <$fd>) {
2715                 chomp $patch_line;
2716
2717                 last if ($patch_line =~ m/^diff /);
2718         }
2719
2720  PATCH:
2721         while ($patch_line) {
2722                 my @diff_header;
2723                 my ($from_id, $to_id);
2724
2725                 # git diff header
2726                 #assert($patch_line =~ m/^diff /) if DEBUG;
2727                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2728                 $patch_number++;
2729                 push @diff_header, $patch_line;
2730
2731                 # extended diff header
2732         EXTENDED_HEADER:
2733                 while ($patch_line = <$fd>) {
2734                         chomp $patch_line;
2735
2736                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2737
2738                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2739                                 $from_id = $1;
2740                                 $to_id   = $2;
2741                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2742                                 $from_id = [ split(',', $1) ];
2743                                 $to_id   = $2;
2744                         }
2745
2746                         push @diff_header, $patch_line;
2747                 }
2748                 my $last_patch_line = $patch_line;
2749
2750                 # check if current patch belong to current raw line
2751                 # and parse raw git-diff line if needed
2752                 if (defined $diffinfo &&
2753                     defined $from_id && defined $to_id &&
2754                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2755                     $diffinfo->{'to_id'} eq $to_id) {
2756                         # this is continuation of a split patch
2757                         print "<div class=\"patch cont\">\n";
2758                 } else {
2759                         # advance raw git-diff output if needed
2760                         $patch_idx++ if defined $diffinfo;
2761
2762                         # read and prepare patch information
2763                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2764                                 # pre-parsed (or generated by hand)
2765                                 $diffinfo = $difftree->[$patch_idx];
2766                         } else {
2767                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2768                         }
2769                         if ($diffinfo->{'nparents'}) {
2770                                 # combined diff
2771                                 $from{'file'} = [];
2772                                 $from{'href'} = [];
2773                                 fill_from_file_info($diffinfo, @hash_parents)
2774                                         unless exists $diffinfo->{'from_file'};
2775                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2776                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2777                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2778                                                 $from{'href'}[$i] = href(action=>"blob",
2779                                                                          hash_base=>$hash_parents[$i],
2780                                                                          hash=>$diffinfo->{'from_id'}[$i],
2781                                                                          file_name=>$from{'file'}[$i]);
2782                                         } else {
2783                                                 $from{'href'}[$i] = undef;
2784                                         }
2785                                 }
2786                         } else {
2787                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2788                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2789                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2790                                                              hash=>$diffinfo->{'from_id'},
2791                                                              file_name=>$from{'file'});
2792                                 } else {
2793                                         delete $from{'href'};
2794                                 }
2795                         }
2796
2797                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2798                         if ($diffinfo->{'to_id'} ne ('0' x 40)) { # file exists in result
2799                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2800                                                    hash=>$diffinfo->{'to_id'},
2801                                                    file_name=>$to{'file'});
2802                         } else {
2803                                 delete $to{'href'};
2804                         }
2805                         # this is first patch for raw difftree line with $patch_idx index
2806                         # we index @$difftree array from 0, but number patches from 1
2807                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2808                 }
2809
2810                 # print "git diff" header
2811                 $patch_line = shift @diff_header;
2812                 if ($diffinfo->{'nparents'}) {
2813
2814                         # combined diff
2815                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2816                         if ($to{'href'}) {
2817                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2818                                                        esc_path($to{'file'}));
2819                         } else { # file was deleted
2820                                 $patch_line .= esc_path($to{'file'});
2821                         }
2822
2823                 } else {
2824
2825                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2826                         if ($from{'href'}) {
2827                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2828                                                        'a/' . esc_path($from{'file'}));
2829                         } else { # file was added
2830                                 $patch_line .= 'a/' . esc_path($from{'file'});
2831                         }
2832                         $patch_line .= ' ';
2833                         if ($to{'href'}) {
2834                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2835                                                        'b/' . esc_path($to{'file'}));
2836                         } else { # file was deleted
2837                                 $patch_line .= 'b/' . esc_path($to{'file'});
2838                         }
2839
2840                 }
2841                 print "<div class=\"diff header\">$patch_line</div>\n";
2842
2843                 # print extended diff header
2844                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2845         EXTENDED_HEADER:
2846                 foreach $patch_line (@diff_header) {
2847                         # match <path>
2848                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2849                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2850                                                        esc_path($from{'file'}));
2851                         }
2852                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2853                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2854                                                        esc_path($to{'file'}));
2855                         }
2856                         # match single <mode>
2857                         if ($patch_line =~ m/\s(\d{6})$/) {
2858                                 $patch_line .= '<span class="info"> (' .
2859                                                file_type_long($1) .
2860                                                ')</span>';
2861                         }
2862                         # match <hash>
2863                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2864                                 # can match only for combined diff
2865                                 $patch_line = 'index ';
2866                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2867                                         if ($from{'href'}[$i]) {
2868                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2869                                                                         -class=>"hash"},
2870                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2871                                         } else {
2872                                                 $patch_line .= '0' x 7;
2873                                         }
2874                                         # separator
2875                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2876                                 }
2877                                 $patch_line .= '..';
2878                                 if ($to{'href'}) {
2879                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2880                                                                substr($diffinfo->{'to_id'},0,7));
2881                                 } else {
2882                                         $patch_line .= '0' x 7;
2883                                 }
2884
2885                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2886                                 # can match only for ordinary diff
2887                                 my ($from_link, $to_link);
2888                                 if ($from{'href'}) {
2889                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2890                                                              substr($diffinfo->{'from_id'},0,7));
2891                                 } else {
2892                                         $from_link = '0' x 7;
2893                                 }
2894                                 if ($to{'href'}) {
2895                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2896                                                            substr($diffinfo->{'to_id'},0,7));
2897                                 } else {
2898                                         $to_link = '0' x 7;
2899                                 }
2900                                 #affirm {
2901                                 #       my ($from_hash, $to_hash) =
2902                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2903                                 #       my ($from_id, $to_id) =
2904                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2905                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2906                                 #} if DEBUG;
2907                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2908                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2909                         }
2910                         print $patch_line . "<br/>\n";
2911                 }
2912                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2913
2914                 # from-file/to-file diff header
2915                 $patch_line = $last_patch_line;
2916                 if (! $patch_line) {
2917                         print "</div>\n"; # class="patch"
2918                         last PATCH;
2919                 }
2920                 next PATCH if ($patch_line =~ m/^diff /);
2921                 #assert($patch_line =~ m/^---/) if DEBUG;
2922                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2923                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2924                         $patch_line = '--- a/' .
2925                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2926                                               esc_path($from{'file'}));
2927                 }
2928                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2929
2930                 $patch_line = <$fd>;
2931                 chomp $patch_line;
2932
2933                 #assert($patch_line =~ m/^+++/) if DEBUG;
2934                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2935                         $patch_line = '+++ b/' .
2936                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2937                                               esc_path($to{'file'}));
2938                 }
2939                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2940
2941                 # the patch itself
2942         LINE:
2943                 while ($patch_line = <$fd>) {
2944                         chomp $patch_line;
2945
2946                         next PATCH if ($patch_line =~ m/^diff /);
2947
2948                         print format_diff_line($patch_line, \%from, \%to);
2949                 }
2950
2951         } continue {
2952                 print "</div>\n"; # class="patch"
2953         }
2954
2955         if ($patch_number == 0) {
2956                 if (@hash_parents > 1) {
2957                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
2958                 } else {
2959                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
2960                 }
2961         }
2962
2963         print "</div>\n"; # class="patchset"
2964 }
2965
2966 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2967
2968 sub git_project_list_body {
2969         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2970
2971         my ($check_forks) = gitweb_check_feature('forks');
2972
2973         my @projects;
2974         foreach my $pr (@$projlist) {
2975                 my (@aa) = git_get_last_activity($pr->{'path'});
2976                 unless (@aa) {
2977                         next;
2978                 }
2979                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2980                 if (!defined $pr->{'descr'}) {
2981                         my $descr = git_get_project_description($pr->{'path'}) || "";
2982                         $pr->{'descr_long'} = to_utf8($descr);
2983                         $pr->{'descr'} = chop_str($descr, 25, 5);
2984                 }
2985                 if (!defined $pr->{'owner'}) {
2986                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2987                 }
2988                 if ($check_forks) {
2989                         my $pname = $pr->{'path'};
2990                         if (($pname =~ s/\.git$//) &&
2991                             ($pname !~ /\/$/) &&
2992                             (-d "$projectroot/$pname")) {
2993                                 $pr->{'forks'} = "-d $projectroot/$pname";
2994                         }
2995                         else {
2996                                 $pr->{'forks'} = 0;
2997                         }
2998                 }
2999                 push @projects, $pr;
3000         }
3001
3002         $order ||= $default_projects_order;
3003         $from = 0 unless defined $from;
3004         $to = $#projects if (!defined $to || $#projects < $to);
3005
3006         print "<table class=\"project_list\">\n";
3007         unless ($no_header) {
3008                 print "<tr>\n";
3009                 if ($check_forks) {
3010                         print "<th></th>\n";
3011                 }
3012                 if ($order eq "project") {
3013                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3014                         print "<th>Project</th>\n";
3015                 } else {
3016                         print "<th>" .
3017                               $cgi->a({-href => href(project=>undef, order=>'project'),
3018                                        -class => "header"}, "Project") .
3019                               "</th>\n";
3020                 }
3021                 if ($order eq "descr") {
3022                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3023                         print "<th>Description</th>\n";
3024                 } else {
3025                         print "<th>" .
3026                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3027                                        -class => "header"}, "Description") .
3028                               "</th>\n";
3029                 }
3030                 if ($order eq "owner") {
3031                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3032                         print "<th>Owner</th>\n";
3033                 } else {
3034                         print "<th>" .
3035                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3036                                        -class => "header"}, "Owner") .
3037                               "</th>\n";
3038                 }
3039                 if ($order eq "age") {
3040                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3041                         print "<th>Last Change</th>\n";
3042                 } else {
3043                         print "<th>" .
3044                               $cgi->a({-href => href(project=>undef, order=>'age'),
3045                                        -class => "header"}, "Last Change") .
3046                               "</th>\n";
3047                 }
3048                 print "<th></th>\n" .
3049                       "</tr>\n";
3050         }
3051         my $alternate = 1;
3052         for (my $i = $from; $i <= $to; $i++) {
3053                 my $pr = $projects[$i];
3054                 if ($alternate) {
3055                         print "<tr class=\"dark\">\n";
3056                 } else {
3057                         print "<tr class=\"light\">\n";
3058                 }
3059                 $alternate ^= 1;
3060                 if ($check_forks) {
3061                         print "<td>";
3062                         if ($pr->{'forks'}) {
3063                                 print "<!-- $pr->{'forks'} -->\n";
3064                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3065                         }
3066                         print "</td>\n";
3067                 }
3068                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3069                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3070                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3071                                         -class => "list", -title => $pr->{'descr_long'}},
3072                                         esc_html($pr->{'descr'})) . "</td>\n" .
3073                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3074                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3075                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3076                       "<td class=\"link\">" .
3077                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3078                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3079                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3080                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3081                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3082                       "</td>\n" .
3083                       "</tr>\n";
3084         }
3085         if (defined $extra) {
3086                 print "<tr>\n";
3087                 if ($check_forks) {
3088                         print "<td></td>\n";
3089                 }
3090                 print "<td colspan=\"5\">$extra</td>\n" .
3091                       "</tr>\n";
3092         }
3093         print "</table>\n";
3094 }
3095
3096 sub git_shortlog_body {
3097         # uses global variable $project
3098         my ($commitlist, $from, $to, $refs, $extra) = @_;
3099
3100         my $have_snapshot = gitweb_have_snapshot();
3101
3102         $from = 0 unless defined $from;
3103         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3104
3105         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3106         my $alternate = 1;
3107         for (my $i = $from; $i <= $to; $i++) {
3108                 my %co = %{$commitlist->[$i]};
3109                 my $commit = $co{'id'};
3110                 my $ref = format_ref_marker($refs, $commit);
3111                 if ($alternate) {
3112                         print "<tr class=\"dark\">\n";
3113                 } else {
3114                         print "<tr class=\"light\">\n";
3115                 }
3116                 $alternate ^= 1;
3117                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3118                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3119                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3120                       "<td>";
3121                 print format_subject_html($co{'title'}, $co{'title_short'},
3122                                           href(action=>"commit", hash=>$commit), $ref);
3123                 print "</td>\n" .
3124                       "<td class=\"link\">" .
3125                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3126                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3127                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3128                 if ($have_snapshot) {
3129                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3130                 }
3131                 print "</td>\n" .
3132                       "</tr>\n";
3133         }
3134         if (defined $extra) {
3135                 print "<tr>\n" .
3136                       "<td colspan=\"4\">$extra</td>\n" .
3137                       "</tr>\n";
3138         }
3139         print "</table>\n";
3140 }
3141
3142 sub git_history_body {
3143         # Warning: assumes constant type (blob or tree) during history
3144         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3145
3146         $from = 0 unless defined $from;
3147         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3148
3149         print "<table class=\"history\" cellspacing=\"0\">\n";
3150         my $alternate = 1;
3151         for (my $i = $from; $i <= $to; $i++) {
3152                 my %co = %{$commitlist->[$i]};
3153                 if (!%co) {
3154                         next;
3155                 }
3156                 my $commit = $co{'id'};
3157
3158                 my $ref = format_ref_marker($refs, $commit);
3159
3160                 if ($alternate) {
3161                         print "<tr class=\"dark\">\n";
3162                 } else {
3163                         print "<tr class=\"light\">\n";
3164                 }
3165                 $alternate ^= 1;
3166                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3167                       # shortlog uses      chop_str($co{'author_name'}, 10)
3168                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3169                       "<td>";
3170                 # originally git_history used chop_str($co{'title'}, 50)
3171                 print format_subject_html($co{'title'}, $co{'title_short'},
3172                                           href(action=>"commit", hash=>$commit), $ref);
3173                 print "</td>\n" .
3174                       "<td class=\"link\">" .
3175                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3176                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3177
3178                 if ($ftype eq 'blob') {
3179                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3180                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3181                         if (defined $blob_current && defined $blob_parent &&
3182                                         $blob_current ne $blob_parent) {
3183                                 print " | " .
3184                                         $cgi->a({-href => href(action=>"blobdiff",
3185                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3186                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3187                                                                file_name=>$file_name)},
3188                                                 "diff to current");
3189                         }
3190                 }
3191                 print "</td>\n" .
3192                       "</tr>\n";
3193         }
3194         if (defined $extra) {
3195                 print "<tr>\n" .
3196                       "<td colspan=\"4\">$extra</td>\n" .
3197                       "</tr>\n";
3198         }
3199         print "</table>\n";
3200 }
3201
3202 sub git_tags_body {
3203         # uses global variable $project
3204         my ($taglist, $from, $to, $extra) = @_;
3205         $from = 0 unless defined $from;
3206         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3207
3208         print "<table class=\"tags\" cellspacing=\"0\">\n";
3209         my $alternate = 1;
3210         for (my $i = $from; $i <= $to; $i++) {
3211                 my $entry = $taglist->[$i];
3212                 my %tag = %$entry;
3213                 my $comment = $tag{'subject'};
3214                 my $comment_short;
3215                 if (defined $comment) {
3216                         $comment_short = chop_str($comment, 30, 5);
3217                 }
3218                 if ($alternate) {
3219                         print "<tr class=\"dark\">\n";
3220                 } else {
3221                         print "<tr class=\"light\">\n";
3222                 }
3223                 $alternate ^= 1;
3224                 if (defined $tag{'age'}) {
3225                         print "<td><i>$tag{'age'}</i></td>\n";
3226                 } else {
3227                         print "<td></td>\n";
3228                 }
3229                 print "<td>" .
3230                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3231                                -class => "list name"}, esc_html($tag{'name'})) .
3232                       "</td>\n" .
3233                       "<td>";
3234                 if (defined $comment) {
3235                         print format_subject_html($comment, $comment_short,
3236                                                   href(action=>"tag", hash=>$tag{'id'}));
3237                 }
3238                 print "</td>\n" .
3239                       "<td class=\"selflink\">";
3240                 if ($tag{'type'} eq "tag") {
3241                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3242                 } else {
3243                         print "&nbsp;";
3244                 }
3245                 print "</td>\n" .
3246                       "<td class=\"link\">" . " | " .
3247                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3248                 if ($tag{'reftype'} eq "commit") {
3249                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3250                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3251                 } elsif ($tag{'reftype'} eq "blob") {
3252                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3253                 }
3254                 print "</td>\n" .
3255                       "</tr>";
3256         }
3257         if (defined $extra) {
3258                 print "<tr>\n" .
3259                       "<td colspan=\"5\">$extra</td>\n" .
3260                       "</tr>\n";
3261         }
3262         print "</table>\n";
3263 }
3264
3265 sub git_heads_body {
3266         # uses global variable $project
3267         my ($headlist, $head, $from, $to, $extra) = @_;
3268         $from = 0 unless defined $from;
3269         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3270
3271         print "<table class=\"heads\" cellspacing=\"0\">\n";
3272         my $alternate = 1;
3273         for (my $i = $from; $i <= $to; $i++) {
3274                 my $entry = $headlist->[$i];
3275                 my %ref = %$entry;
3276                 my $curr = $ref{'id'} eq $head;
3277                 if ($alternate) {
3278                         print "<tr class=\"dark\">\n";
3279                 } else {
3280                         print "<tr class=\"light\">\n";
3281                 }
3282                 $alternate ^= 1;
3283                 print "<td><i>$ref{'age'}</i></td>\n" .
3284                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3285                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3286                                -class => "list name"},esc_html($ref{'name'})) .
3287                       "</td>\n" .
3288                       "<td class=\"link\">" .
3289                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3290                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3291                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3292                       "</td>\n" .
3293                       "</tr>";
3294         }
3295         if (defined $extra) {
3296                 print "<tr>\n" .
3297                       "<td colspan=\"3\">$extra</td>\n" .
3298                       "</tr>\n";
3299         }
3300         print "</table>\n";
3301 }
3302
3303 sub git_search_grep_body {
3304         my ($commitlist, $from, $to, $extra) = @_;
3305         $from = 0 unless defined $from;
3306         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3307
3308         print "<table class=\"grep\" cellspacing=\"0\">\n";
3309         my $alternate = 1;
3310         for (my $i = $from; $i <= $to; $i++) {
3311                 my %co = %{$commitlist->[$i]};
3312                 if (!%co) {
3313                         next;
3314                 }
3315                 my $commit = $co{'id'};
3316                 if ($alternate) {
3317                         print "<tr class=\"dark\">\n";
3318                 } else {
3319                         print "<tr class=\"light\">\n";
3320                 }
3321                 $alternate ^= 1;
3322                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3323                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3324                       "<td>" .
3325                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3326                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3327                 my $comment = $co{'comment'};
3328                 foreach my $line (@$comment) {
3329                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3330                                 my $lead = esc_html($1) || "";
3331                                 $lead = chop_str($lead, 30, 10);
3332                                 my $match = esc_html($2) || "";
3333                                 my $trail = esc_html($3) || "";
3334                                 $trail = chop_str($trail, 30, 10);
3335                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3336                                 print chop_str($text, 80, 5) . "<br/>\n";
3337                         }
3338                 }
3339                 print "</td>\n" .
3340                       "<td class=\"link\">" .
3341                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3342                       " | " .
3343                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3344                 print "</td>\n" .
3345                       "</tr>\n";
3346         }
3347         if (defined $extra) {
3348                 print "<tr>\n" .
3349                       "<td colspan=\"3\">$extra</td>\n" .
3350                       "</tr>\n";
3351         }
3352         print "</table>\n";
3353 }
3354
3355 ## ======================================================================
3356 ## ======================================================================
3357 ## actions
3358
3359 sub git_project_list {
3360         my $order = $cgi->param('o');
3361         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3362                 die_error(undef, "Unknown order parameter");
3363         }
3364
3365         my @list = git_get_projects_list();
3366         if (!@list) {
3367                 die_error(undef, "No projects found");
3368         }
3369
3370         git_header_html();
3371         if (-f $home_text) {
3372                 print "<div class=\"index_include\">\n";
3373                 open (my $fd, $home_text);
3374                 print <$fd>;
3375                 close $fd;
3376                 print "</div>\n";
3377         }
3378         git_project_list_body(\@list, $order);
3379         git_footer_html();
3380 }
3381
3382 sub git_forks {
3383         my $order = $cgi->param('o');
3384         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3385                 die_error(undef, "Unknown order parameter");
3386         }
3387
3388         my @list = git_get_projects_list($project);
3389         if (!@list) {
3390                 die_error(undef, "No forks found");
3391         }
3392
3393         git_header_html();
3394         git_print_page_nav('','');
3395         git_print_header_div('summary', "$project forks");
3396         git_project_list_body(\@list, $order);
3397         git_footer_html();
3398 }
3399
3400 sub git_project_index {
3401         my @projects = git_get_projects_list($project);
3402
3403         print $cgi->header(
3404                 -type => 'text/plain',
3405                 -charset => 'utf-8',
3406                 -content_disposition => 'inline; filename="index.aux"');
3407
3408         foreach my $pr (@projects) {
3409                 if (!exists $pr->{'owner'}) {
3410                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3411                 }
3412
3413                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3414                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3415                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3416                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3417                 $path  =~ s/ /\+/g;
3418                 $owner =~ s/ /\+/g;
3419
3420                 print "$path $owner\n";
3421         }
3422 }
3423
3424 sub git_summary {
3425         my $descr = git_get_project_description($project) || "none";
3426         my %co = parse_commit("HEAD");
3427         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3428         my $head = $co{'id'};
3429
3430         my $owner = git_get_project_owner($project);
3431
3432         my $refs = git_get_references();
3433         # These get_*_list functions return one more to allow us to see if
3434         # there are more ...
3435         my @taglist  = git_get_tags_list(16);
3436         my @headlist = git_get_heads_list(16);
3437         my @forklist;
3438         my ($check_forks) = gitweb_check_feature('forks');
3439
3440         if ($check_forks) {
3441                 @forklist = git_get_projects_list($project);
3442         }
3443
3444         git_header_html();
3445         git_print_page_nav('summary','', $head);
3446
3447         print "<div class=\"title\">&nbsp;</div>\n";
3448         print "<table cellspacing=\"0\">\n" .
3449               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3450               "<tr><td>owner</td><td>$owner</td></tr>\n";
3451         if (defined $cd{'rfc2822'}) {
3452                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3453         }
3454
3455         # use per project git URL list in $projectroot/$project/cloneurl
3456         # or make project git URL from git base URL and project name
3457         my $url_tag = "URL";
3458         my @url_list = git_get_project_url_list($project);
3459         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3460         foreach my $git_url (@url_list) {
3461                 next unless $git_url;
3462                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3463                 $url_tag = "";
3464         }
3465         print "</table>\n";
3466
3467         if (-s "$projectroot/$project/README.html") {
3468                 if (open my $fd, "$projectroot/$project/README.html") {
3469                         print "<div class=\"title\">readme</div>\n";
3470                         print $_ while (<$fd>);
3471                         close $fd;
3472                 }
3473         }
3474
3475         # we need to request one more than 16 (0..15) to check if
3476         # those 16 are all
3477         my @commitlist = $head ? parse_commits($head, 17) : ();
3478         if (@commitlist) {
3479                 git_print_header_div('shortlog');
3480                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3481                                   $#commitlist <=  15 ? undef :
3482                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3483         }
3484
3485         if (@taglist) {
3486                 git_print_header_div('tags');
3487                 git_tags_body(\@taglist, 0, 15,
3488                               $#taglist <=  15 ? undef :
3489                               $cgi->a({-href => href(action=>"tags")}, "..."));
3490         }
3491
3492         if (@headlist) {
3493                 git_print_header_div('heads');
3494                 git_heads_body(\@headlist, $head, 0, 15,
3495                                $#headlist <= 15 ? undef :
3496                                $cgi->a({-href => href(action=>"heads")}, "..."));
3497         }
3498
3499         if (@forklist) {
3500                 git_print_header_div('forks');
3501                 git_project_list_body(\@forklist, undef, 0, 15,
3502                                       $#forklist <= 15 ? undef :
3503                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3504                                       'noheader');
3505         }
3506
3507         git_footer_html();
3508 }
3509
3510 sub git_tag {
3511         my $head = git_get_head_hash($project);
3512         git_header_html();
3513         git_print_page_nav('','', $head,undef,$head);
3514         my %tag = parse_tag($hash);
3515
3516         if (! %tag) {
3517                 die_error(undef, "Unknown tag object");
3518         }
3519
3520         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3521         print "<div class=\"title_text\">\n" .
3522               "<table cellspacing=\"0\">\n" .
3523               "<tr>\n" .
3524               "<td>object</td>\n" .
3525               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3526                                $tag{'object'}) . "</td>\n" .
3527               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3528                                               $tag{'type'}) . "</td>\n" .
3529               "</tr>\n";
3530         if (defined($tag{'author'})) {
3531                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3532                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3533                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3534                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3535                         "</td></tr>\n";
3536         }
3537         print "</table>\n\n" .
3538               "</div>\n";
3539         print "<div class=\"page_body\">";
3540         my $comment = $tag{'comment'};
3541         foreach my $line (@$comment) {
3542                 chomp $line;
3543                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3544         }
3545         print "</div>\n";
3546         git_footer_html();
3547 }
3548
3549 sub git_blame2 {
3550         my $fd;
3551         my $ftype;
3552
3553         my ($have_blame) = gitweb_check_feature('blame');
3554         if (!$have_blame) {
3555                 die_error('403 Permission denied', "Permission denied");
3556         }
3557         die_error('404 Not Found', "File name not defined") if (!$file_name);
3558         $hash_base ||= git_get_head_hash($project);
3559         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3560         my %co = parse_commit($hash_base)
3561                 or die_error(undef, "Reading commit failed");
3562         if (!defined $hash) {
3563                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3564                         or die_error(undef, "Error looking up file");
3565         }
3566         $ftype = git_get_type($hash);
3567         if ($ftype !~ "blob") {
3568                 die_error('400 Bad Request', "Object is not a blob");
3569         }
3570         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3571               $file_name, $hash_base)
3572                 or die_error(undef, "Open git-blame failed");
3573         git_header_html();
3574         my $formats_nav =
3575                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3576                         "blob") .
3577                 " | " .
3578                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3579                         "history") .
3580                 " | " .
3581                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3582                         "HEAD");
3583         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3584         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3585         git_print_page_path($file_name, $ftype, $hash_base);
3586         my @rev_color = (qw(light2 dark2));
3587         my $num_colors = scalar(@rev_color);
3588         my $current_color = 0;
3589         my $last_rev;
3590         print <<HTML;
3591 <div class="page_body">
3592 <table class="blame">
3593 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3594 HTML
3595         my %metainfo = ();
3596         while (1) {
3597                 $_ = <$fd>;
3598                 last unless defined $_;
3599                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3600                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3601                 if (!exists $metainfo{$full_rev}) {
3602                         $metainfo{$full_rev} = {};
3603                 }
3604                 my $meta = $metainfo{$full_rev};
3605                 while (<$fd>) {
3606                         last if (s/^\t//);
3607                         if (/^(\S+) (.*)$/) {
3608                                 $meta->{$1} = $2;
3609                         }
3610                 }
3611                 my $data = $_;
3612                 chomp $data;
3613                 my $rev = substr($full_rev, 0, 8);
3614                 my $author = $meta->{'author'};
3615                 my %date = parse_date($meta->{'author-time'},
3616                                       $meta->{'author-tz'});
3617                 my $date = $date{'iso-tz'};
3618                 if ($group_size) {
3619                         $current_color = ++$current_color % $num_colors;
3620                 }
3621                 print "<tr class=\"$rev_color[$current_color]\">\n";
3622                 if ($group_size) {
3623                         print "<td class=\"sha1\"";
3624                         print " title=\"". esc_html($author) . ", $date\"";
3625                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3626                         print ">";
3627                         print $cgi->a({-href => href(action=>"commit",
3628                                                      hash=>$full_rev,
3629                                                      file_name=>$file_name)},
3630                                       esc_html($rev));
3631                         print "</td>\n";
3632                 }
3633                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3634                         or die_error(undef, "Open git-rev-parse failed");
3635                 my $parent_commit = <$dd>;
3636                 close $dd;
3637                 chomp($parent_commit);
3638                 my $blamed = href(action => 'blame',
3639                                   file_name => $meta->{'filename'},
3640                                   hash_base => $parent_commit);
3641                 print "<td class=\"linenr\">";
3642                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3643                                 -id => "l$lineno",
3644                                 -class => "linenr" },
3645                               esc_html($lineno));
3646                 print "</td>";
3647                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3648                 print "</tr>\n";
3649         }
3650         print "</table>\n";
3651         print "</div>";
3652         close $fd
3653                 or print "Reading blob failed\n";
3654         git_footer_html();
3655 }
3656
3657 sub git_blame {
3658         my $fd;
3659
3660         my ($have_blame) = gitweb_check_feature('blame');
3661         if (!$have_blame) {
3662                 die_error('403 Permission denied', "Permission denied");
3663         }
3664         die_error('404 Not Found', "File name not defined") if (!$file_name);
3665         $hash_base ||= git_get_head_hash($project);
3666         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3667         my %co = parse_commit($hash_base)
3668                 or die_error(undef, "Reading commit failed");
3669         if (!defined $hash) {
3670                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3671                         or die_error(undef, "Error lookup file");
3672         }
3673         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3674                 or die_error(undef, "Open git-annotate failed");
3675         git_header_html();
3676         my $formats_nav =
3677                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3678                         "blob") .
3679                 " | " .
3680                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3681                         "history") .
3682                 " | " .
3683                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3684                         "HEAD");
3685         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3686         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3687         git_print_page_path($file_name, 'blob', $hash_base);
3688         print "<div class=\"page_body\">\n";
3689         print <<HTML;
3690 <table class="blame">
3691   <tr>
3692     <th>Commit</th>
3693     <th>Age</th>
3694     <th>Author</th>
3695     <th>Line</th>
3696     <th>Data</th>
3697   </tr>
3698 HTML
3699         my @line_class = (qw(light dark));
3700         my $line_class_len = scalar (@line_class);
3701         my $line_class_num = $#line_class;
3702         while (my $line = <$fd>) {
3703                 my $long_rev;
3704                 my $short_rev;
3705                 my $author;
3706                 my $time;
3707                 my $lineno;
3708                 my $data;
3709                 my $age;
3710                 my $age_str;
3711                 my $age_class;
3712
3713                 chomp $line;
3714                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3715
3716                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3717                         $long_rev = $1;
3718                         $author   = $2;
3719                         $time     = $3;
3720                         $lineno   = $4;
3721                         $data     = $5;
3722                 } else {
3723                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3724                         next;
3725                 }
3726                 $short_rev  = substr ($long_rev, 0, 8);
3727                 $age        = time () - $time;
3728                 $age_str    = age_string ($age);
3729                 $age_str    =~ s/ /&nbsp;/g;
3730                 $age_class  = age_class($age);
3731                 $author     = esc_html ($author);
3732                 $author     =~ s/ /&nbsp;/g;
3733
3734                 $data = untabify($data);
3735                 $data = esc_html ($data);
3736
3737                 print <<HTML;
3738   <tr class="$line_class[$line_class_num]">
3739     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3740     <td class="$age_class">$age_str</td>
3741     <td>$author</td>
3742     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3743     <td class="pre">$data</td>
3744   </tr>
3745 HTML
3746         } # while (my $line = <$fd>)
3747         print "</table>\n\n";
3748         close $fd
3749                 or print "Reading blob failed.\n";
3750         print "</div>";
3751         git_footer_html();
3752 }
3753
3754 sub git_tags {
3755         my $head = git_get_head_hash($project);
3756         git_header_html();
3757         git_print_page_nav('','', $head,undef,$head);
3758         git_print_header_div('summary', $project);
3759
3760         my @tagslist = git_get_tags_list();
3761         if (@tagslist) {
3762                 git_tags_body(\@tagslist);
3763         }
3764         git_footer_html();
3765 }
3766
3767 sub git_heads {
3768         my $head = git_get_head_hash($project);
3769         git_header_html();
3770         git_print_page_nav('','', $head,undef,$head);
3771         git_print_header_div('summary', $project);
3772
3773         my @headslist = git_get_heads_list();
3774         if (@headslist) {
3775                 git_heads_body(\@headslist, $head);
3776         }
3777         git_footer_html();
3778 }
3779
3780 sub git_blob_plain {
3781         my $expires;
3782
3783         if (!defined $hash) {
3784                 if (defined $file_name) {
3785                         my $base = $hash_base || git_get_head_hash($project);
3786                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3787                                 or die_error(undef, "Error lookup file");
3788                 } else {
3789                         die_error(undef, "No file name defined");
3790                 }
3791         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3792                 # blobs defined by non-textual hash id's can be cached
3793                 $expires = "+1d";
3794         }
3795
3796         my $type = shift;
3797         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3798                 or die_error(undef, "Couldn't cat $file_name, $hash");
3799
3800         $type ||= blob_mimetype($fd, $file_name);
3801
3802         # save as filename, even when no $file_name is given
3803         my $save_as = "$hash";
3804         if (defined $file_name) {
3805                 $save_as = $file_name;
3806         } elsif ($type =~ m/^text\//) {
3807                 $save_as .= '.txt';
3808         }
3809
3810         print $cgi->header(
3811                 -type => "$type",
3812                 -expires=>$expires,
3813                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3814         undef $/;
3815         binmode STDOUT, ':raw';
3816         print <$fd>;
3817         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3818         $/ = "\n";
3819         close $fd;
3820 }
3821
3822 sub git_blob {
3823         my $expires;
3824
3825         if (!defined $hash) {
3826                 if (defined $file_name) {
3827                         my $base = $hash_base || git_get_head_hash($project);
3828                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3829                                 or die_error(undef, "Error lookup file");
3830                 } else {
3831                         die_error(undef, "No file name defined");
3832                 }
3833         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3834                 # blobs defined by non-textual hash id's can be cached
3835                 $expires = "+1d";
3836         }
3837
3838         my ($have_blame) = gitweb_check_feature('blame');
3839         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3840                 or die_error(undef, "Couldn't cat $file_name, $hash");
3841         my $mimetype = blob_mimetype($fd, $file_name);
3842         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3843                 close $fd;
3844                 return git_blob_plain($mimetype);
3845         }
3846         # we can have blame only for text/* mimetype
3847         $have_blame &&= ($mimetype =~ m!^text/!);
3848
3849         git_header_html(undef, $expires);
3850         my $formats_nav = '';
3851         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3852                 if (defined $file_name) {
3853                         if ($have_blame) {
3854                                 $formats_nav .=
3855                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3856                                                                hash=>$hash, file_name=>$file_name)},
3857                                                 "blame") .
3858                                         " | ";
3859                         }
3860                         $formats_nav .=
3861                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3862                                                        hash=>$hash, file_name=>$file_name)},
3863                                         "history") .
3864                                 " | " .
3865                                 $cgi->a({-href => href(action=>"blob_plain",
3866                                                        hash=>$hash, file_name=>$file_name)},
3867                                         "raw") .
3868                                 " | " .
3869                                 $cgi->a({-href => href(action=>"blob",
3870                                                        hash_base=>"HEAD", file_name=>$file_name)},
3871                                         "HEAD");
3872                 } else {
3873                         $formats_nav .=
3874                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3875                 }
3876                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3877                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3878         } else {
3879                 print "<div class=\"page_nav\">\n" .
3880                       "<br/><br/></div>\n" .
3881                       "<div class=\"title\">$hash</div>\n";
3882         }
3883         git_print_page_path($file_name, "blob", $hash_base);
3884         print "<div class=\"page_body\">\n";
3885         if ($mimetype =~ m!^text/!) {
3886                 my $nr;
3887                 while (my $line = <$fd>) {
3888                         chomp $line;
3889                         $nr++;
3890                         $line = untabify($line);
3891                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3892                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3893                 }
3894         } elsif ($mimetype =~ m!^image/!) {
3895                 print qq!<img type="$mimetype"!;
3896                 if ($file_name) {
3897                         print qq! alt="$file_name" title="$file_name"!;
3898                 }
3899                 print qq! src="! .
3900                       href(action=>"blob_plain", hash=>$hash,
3901                            hash_base=>$hash_base, file_name=>$file_name) .
3902                       qq!" />\n!;
3903         }
3904         close $fd
3905                 or print "Reading blob failed.\n";
3906         print "</div>";
3907         git_footer_html();
3908 }
3909
3910 sub git_tree {
3911         my $have_snapshot = gitweb_have_snapshot();
3912
3913         if (!defined $hash_base) {
3914                 $hash_base = "HEAD";
3915         }
3916         if (!defined $hash) {
3917                 if (defined $file_name) {
3918                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3919                 } else {
3920                         $hash = $hash_base;
3921                 }
3922         }
3923         $/ = "\0";
3924         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3925                 or die_error(undef, "Open git-ls-tree failed");
3926         my @entries = map { chomp; $_ } <$fd>;
3927         close $fd or die_error(undef, "Reading tree failed");
3928         $/ = "\n";
3929
3930         my $refs = git_get_references();
3931         my $ref = format_ref_marker($refs, $hash_base);
3932         git_header_html();
3933         my $basedir = '';
3934         my ($have_blame) = gitweb_check_feature('blame');
3935         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3936                 my @views_nav = ();
3937                 if (defined $file_name) {
3938                         push @views_nav,
3939                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3940                                                        hash=>$hash, file_name=>$file_name)},
3941                                         "history"),
3942                                 $cgi->a({-href => href(action=>"tree",
3943                                                        hash_base=>"HEAD", file_name=>$file_name)},
3944                                         "HEAD"),
3945                 }
3946                 if ($have_snapshot) {
3947                         # FIXME: Should be available when we have no hash base as well.
3948                         push @views_nav,
3949                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3950                                         "snapshot");
3951                 }
3952                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3953                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3954         } else {
3955                 undef $hash_base;
3956                 print "<div class=\"page_nav\">\n";
3957                 print "<br/><br/></div>\n";
3958                 print "<div class=\"title\">$hash</div>\n";
3959         }
3960         if (defined $file_name) {
3961                 $basedir = $file_name;
3962                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3963                         $basedir .= '/';
3964                 }
3965         }
3966         git_print_page_path($file_name, 'tree', $hash_base);
3967         print "<div class=\"page_body\">\n";
3968         print "<table cellspacing=\"0\">\n";
3969         my $alternate = 1;
3970         # '..' (top directory) link if possible
3971         if (defined $hash_base &&
3972             defined $file_name && $file_name =~ m![^/]+$!) {
3973                 if ($alternate) {
3974                         print "<tr class=\"dark\">\n";
3975                 } else {
3976                         print "<tr class=\"light\">\n";
3977                 }
3978                 $alternate ^= 1;
3979
3980                 my $up = $file_name;
3981                 $up =~ s!/?[^/]+$!!;
3982                 undef $up unless $up;
3983                 # based on git_print_tree_entry
3984                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3985                 print '<td class="list">';
3986                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3987                                              file_name=>$up)},
3988                               "..");
3989                 print "</td>\n";
3990                 print "<td class=\"link\"></td>\n";
3991
3992                 print "</tr>\n";
3993         }
3994         foreach my $line (@entries) {
3995                 my %t = parse_ls_tree_line($line, -z => 1);
3996
3997                 if ($alternate) {
3998                         print "<tr class=\"dark\">\n";
3999                 } else {
4000                         print "<tr class=\"light\">\n";
4001                 }
4002                 $alternate ^= 1;
4003
4004                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4005
4006                 print "</tr>\n";
4007         }
4008         print "</table>\n" .
4009               "</div>";
4010         git_footer_html();
4011 }
4012
4013 sub git_snapshot {
4014         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4015         my $have_snapshot = (defined $ctype && defined $suffix);
4016         if (!$have_snapshot) {
4017                 die_error('403 Permission denied', "Permission denied");
4018         }
4019
4020         if (!defined $hash) {
4021                 $hash = git_get_head_hash($project);
4022         }
4023
4024         my $git = git_cmd_str();
4025         my $name = $project;
4026         $name =~ s/\047/\047\\\047\047/g;
4027         my $filename = to_utf8(basename($project));
4028         my $cmd;
4029         if ($suffix eq 'zip') {
4030                 $filename .= "-$hash.$suffix";
4031                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4032         } else {
4033                 $filename .= "-$hash.tar.$suffix";
4034                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4035         }
4036
4037         print $cgi->header(
4038                 -type => "application/$ctype",
4039                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4040                 -status => '200 OK');
4041
4042         open my $fd, "-|", $cmd
4043                 or die_error(undef, "Execute git-archive failed");
4044         binmode STDOUT, ':raw';
4045         print <$fd>;
4046         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4047         close $fd;
4048
4049 }
4050
4051 sub git_log {
4052         my $head = git_get_head_hash($project);
4053         if (!defined $hash) {
4054                 $hash = $head;
4055         }
4056         if (!defined $page) {
4057                 $page = 0;
4058         }
4059         my $refs = git_get_references();
4060
4061         my @commitlist = parse_commits($hash, 101, (100 * $page));
4062
4063         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4064
4065         git_header_html();
4066         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4067
4068         if (!@commitlist) {
4069                 my %co = parse_commit($hash);
4070
4071                 git_print_header_div('summary', $project);
4072                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4073         }
4074         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4075         for (my $i = 0; $i <= $to; $i++) {
4076                 my %co = %{$commitlist[$i]};
4077                 next if !%co;
4078                 my $commit = $co{'id'};
4079                 my $ref = format_ref_marker($refs, $commit);
4080                 my %ad = parse_date($co{'author_epoch'});
4081                 git_print_header_div('commit',
4082                                "<span class=\"age\">$co{'age_string'}</span>" .
4083                                esc_html($co{'title'}) . $ref,
4084                                $commit);
4085                 print "<div class=\"title_text\">\n" .
4086                       "<div class=\"log_link\">\n" .
4087                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4088                       " | " .
4089                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4090                       " | " .
4091                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4092                       "<br/>\n" .
4093                       "</div>\n" .
4094                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4095                       "</div>\n";
4096
4097                 print "<div class=\"log_body\">\n";
4098                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4099                 print "</div>\n";
4100         }
4101         if ($#commitlist >= 100) {
4102                 print "<div class=\"page_nav\">\n";
4103                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4104                                -accesskey => "n", -title => "Alt-n"}, "next");
4105                 print "</div>\n";
4106         }
4107         git_footer_html();
4108 }
4109
4110 sub git_commit {
4111         $hash ||= $hash_base || "HEAD";
4112         my %co = parse_commit($hash);
4113         if (!%co) {
4114                 die_error(undef, "Unknown commit object");
4115         }
4116         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4117         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4118
4119         my $parent  = $co{'parent'};
4120         my $parents = $co{'parents'}; # listref
4121
4122         # we need to prepare $formats_nav before any parameter munging
4123         my $formats_nav;
4124         if (!defined $parent) {
4125                 # --root commitdiff
4126                 $formats_nav .= '(initial)';
4127         } elsif (@$parents == 1) {
4128                 # single parent commit
4129                 $formats_nav .=
4130                         '(parent: ' .
4131                         $cgi->a({-href => href(action=>"commit",
4132                                                hash=>$parent)},
4133                                 esc_html(substr($parent, 0, 7))) .
4134                         ')';
4135         } else {
4136                 # merge commit
4137                 $formats_nav .=
4138                         '(merge: ' .
4139                         join(' ', map {
4140                                 $cgi->a({-href => href(action=>"commit",
4141                                                        hash=>$_)},
4142                                         esc_html(substr($_, 0, 7)));
4143                         } @$parents ) .
4144                         ')';
4145         }
4146
4147         if (!defined $parent) {
4148                 $parent = "--root";
4149         }
4150         my @difftree;
4151         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4152                 @diff_opts,
4153                 (@$parents <= 1 ? $parent : '-c'),
4154                 $hash, "--"
4155                 or die_error(undef, "Open git-diff-tree failed");
4156         @difftree = map { chomp; $_ } <$fd>;
4157         close $fd or die_error(undef, "Reading git-diff-tree failed");
4158
4159         # non-textual hash id's can be cached
4160         my $expires;
4161         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4162                 $expires = "+1d";
4163         }
4164         my $refs = git_get_references();
4165         my $ref = format_ref_marker($refs, $co{'id'});
4166
4167         my $have_snapshot = gitweb_have_snapshot();
4168
4169         git_header_html(undef, $expires);
4170         git_print_page_nav('commit', '',
4171                            $hash, $co{'tree'}, $hash,
4172                            $formats_nav);
4173
4174         if (defined $co{'parent'}) {
4175                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4176         } else {
4177                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4178         }
4179         print "<div class=\"title_text\">\n" .
4180               "<table cellspacing=\"0\">\n";
4181         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4182               "<tr>" .
4183               "<td></td><td> $ad{'rfc2822'}";
4184         if ($ad{'hour_local'} < 6) {
4185                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4186                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4187         } else {
4188                 printf(" (%02d:%02d %s)",
4189                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4190         }
4191         print "</td>" .
4192               "</tr>\n";
4193         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4194         print "<tr><td></td><td> $cd{'rfc2822'}" .
4195               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4196               "</td></tr>\n";
4197         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4198         print "<tr>" .
4199               "<td>tree</td>" .
4200               "<td class=\"sha1\">" .
4201               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4202                        class => "list"}, $co{'tree'}) .
4203               "</td>" .
4204               "<td class=\"link\">" .
4205               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4206                       "tree");
4207         if ($have_snapshot) {
4208                 print " | " .
4209                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4210         }
4211         print "</td>" .
4212               "</tr>\n";
4213
4214         foreach my $par (@$parents) {
4215                 print "<tr>" .
4216                       "<td>parent</td>" .
4217                       "<td class=\"sha1\">" .
4218                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4219                                class => "list"}, $par) .
4220                       "</td>" .
4221                       "<td class=\"link\">" .
4222                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4223                       " | " .
4224                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4225                       "</td>" .
4226                       "</tr>\n";
4227         }
4228         print "</table>".
4229               "</div>\n";
4230
4231         print "<div class=\"page_body\">\n";
4232         git_print_log($co{'comment'});
4233         print "</div>\n";
4234
4235         git_difftree_body(\@difftree, $hash, @$parents);
4236
4237         git_footer_html();
4238 }
4239
4240 sub git_object {
4241         # object is defined by:
4242         # - hash or hash_base alone
4243         # - hash_base and file_name
4244         my $type;
4245
4246         # - hash or hash_base alone
4247         if ($hash || ($hash_base && !defined $file_name)) {
4248                 my $object_id = $hash || $hash_base;
4249
4250                 my $git_command = git_cmd_str();
4251                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4252                         or die_error('404 Not Found', "Object does not exist");
4253                 $type = <$fd>;
4254                 chomp $type;
4255                 close $fd
4256                         or die_error('404 Not Found', "Object does not exist");
4257
4258         # - hash_base and file_name
4259         } elsif ($hash_base && defined $file_name) {
4260                 $file_name =~ s,/+$,,;
4261
4262                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4263                         or die_error('404 Not Found', "Base object does not exist");
4264
4265                 # here errors should not hapen
4266                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4267                         or die_error(undef, "Open git-ls-tree failed");
4268                 my $line = <$fd>;
4269                 close $fd;
4270
4271                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4272                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4273                         die_error('404 Not Found', "File or directory for given base does not exist");
4274                 }
4275                 $type = $2;
4276                 $hash = $3;
4277         } else {
4278                 die_error('404 Not Found', "Not enough information to find object");
4279         }
4280
4281         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4282                                           hash=>$hash, hash_base=>$hash_base,
4283                                           file_name=>$file_name),
4284                              -status => '302 Found');
4285 }
4286
4287 sub git_blobdiff {
4288         my $format = shift || 'html';
4289
4290         my $fd;
4291         my @difftree;
4292         my %diffinfo;
4293         my $expires;
4294
4295         # preparing $fd and %diffinfo for git_patchset_body
4296         # new style URI
4297         if (defined $hash_base && defined $hash_parent_base) {
4298                 if (defined $file_name) {
4299                         # read raw output
4300                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4301                                 $hash_parent_base, $hash_base,
4302                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4303                                 or die_error(undef, "Open git-diff-tree failed");
4304                         @difftree = map { chomp; $_ } <$fd>;
4305                         close $fd
4306                                 or die_error(undef, "Reading git-diff-tree failed");
4307                         @difftree
4308                                 or die_error('404 Not Found', "Blob diff not found");
4309
4310                 } elsif (defined $hash &&
4311                          $hash =~ /[0-9a-fA-F]{40}/) {
4312                         # try to find filename from $hash
4313
4314                         # read filtered raw output
4315                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4316                                 $hash_parent_base, $hash_base, "--"
4317                                 or die_error(undef, "Open git-diff-tree failed");
4318                         @difftree =
4319                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4320                                 # $hash == to_id
4321                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4322                                 map { chomp; $_ } <$fd>;
4323                         close $fd
4324                                 or die_error(undef, "Reading git-diff-tree failed");
4325                         @difftree
4326                                 or die_error('404 Not Found', "Blob diff not found");
4327
4328                 } else {
4329                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4330                 }
4331
4332                 if (@difftree > 1) {
4333                         die_error('404 Not Found', "Ambiguous blob diff specification");
4334                 }
4335
4336                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4337                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4338                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4339
4340                 $hash_parent ||= $diffinfo{'from_id'};
4341                 $hash        ||= $diffinfo{'to_id'};
4342
4343                 # non-textual hash id's can be cached
4344                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4345                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4346                         $expires = '+1d';
4347                 }
4348
4349                 # open patch output
4350                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4351                         '-p', ($format eq 'html' ? "--full-index" : ()),
4352                         $hash_parent_base, $hash_base,
4353                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4354                         or die_error(undef, "Open git-diff-tree failed");
4355         }
4356
4357         # old/legacy style URI
4358         if (!%diffinfo && # if new style URI failed
4359             defined $hash && defined $hash_parent) {
4360                 # fake git-diff-tree raw output
4361                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4362                 $diffinfo{'from_id'} = $hash_parent;
4363                 $diffinfo{'to_id'}   = $hash;
4364                 if (defined $file_name) {
4365                         if (defined $file_parent) {
4366                                 $diffinfo{'status'} = '2';
4367                                 $diffinfo{'from_file'} = $file_parent;
4368                                 $diffinfo{'to_file'}   = $file_name;
4369                         } else { # assume not renamed
4370                                 $diffinfo{'status'} = '1';
4371                                 $diffinfo{'from_file'} = $file_name;
4372                                 $diffinfo{'to_file'}   = $file_name;
4373                         }
4374                 } else { # no filename given
4375                         $diffinfo{'status'} = '2';
4376                         $diffinfo{'from_file'} = $hash_parent;
4377                         $diffinfo{'to_file'}   = $hash;
4378                 }
4379
4380                 # non-textual hash id's can be cached
4381                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4382                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4383                         $expires = '+1d';
4384                 }
4385
4386                 # open patch output
4387                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4388                         '-p', ($format eq 'html' ? "--full-index" : ()),
4389                         $hash_parent, $hash, "--"
4390                         or die_error(undef, "Open git-diff failed");
4391         } else  {
4392                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4393                         unless %diffinfo;
4394         }
4395
4396         # header
4397         if ($format eq 'html') {
4398                 my $formats_nav =
4399                         $cgi->a({-href => href(action=>"blobdiff_plain",
4400                                                hash=>$hash, hash_parent=>$hash_parent,
4401                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4402                                                file_name=>$file_name, file_parent=>$file_parent)},
4403                                 "raw");
4404                 git_header_html(undef, $expires);
4405                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4406                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4407                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4408                 } else {
4409                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4410                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4411                 }
4412                 if (defined $file_name) {
4413                         git_print_page_path($file_name, "blob", $hash_base);
4414                 } else {
4415                         print "<div class=\"page_path\"></div>\n";
4416                 }
4417
4418         } elsif ($format eq 'plain') {
4419                 print $cgi->header(
4420                         -type => 'text/plain',
4421                         -charset => 'utf-8',
4422                         -expires => $expires,
4423                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4424
4425                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4426
4427         } else {
4428                 die_error(undef, "Unknown blobdiff format");
4429         }
4430
4431         # patch
4432         if ($format eq 'html') {
4433                 print "<div class=\"page_body\">\n";
4434
4435                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4436                 close $fd;
4437
4438                 print "</div>\n"; # class="page_body"
4439                 git_footer_html();
4440
4441         } else {
4442                 while (my $line = <$fd>) {
4443                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4444                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4445
4446                         print $line;
4447
4448                         last if $line =~ m!^\+\+\+!;
4449                 }
4450                 local $/ = undef;
4451                 print <$fd>;
4452                 close $fd;
4453         }
4454 }
4455
4456 sub git_blobdiff_plain {
4457         git_blobdiff('plain');
4458 }
4459
4460 sub git_commitdiff {
4461         my $format = shift || 'html';
4462         $hash ||= $hash_base || "HEAD";
4463         my %co = parse_commit($hash);
4464         if (!%co) {
4465                 die_error(undef, "Unknown commit object");
4466         }
4467
4468         # we need to prepare $formats_nav before any parameter munging
4469         my $formats_nav;
4470         if ($format eq 'html') {
4471                 $formats_nav =
4472                         $cgi->a({-href => href(action=>"commitdiff_plain",
4473                                                hash=>$hash, hash_parent=>$hash_parent)},
4474                                 "raw");
4475
4476                 if (defined $hash_parent) {
4477                         # commitdiff with two commits given
4478                         my $hash_parent_short = $hash_parent;
4479                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4480                                 $hash_parent_short = substr($hash_parent, 0, 7);
4481                         }
4482                         $formats_nav .=
4483                                 ' (from';
4484                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4485                                 if ($co{'parents'}[$i] eq $hash_parent) {
4486                                         $formats_nav .= ' parent ' . ($i+1);
4487                                         last;
4488                                 }
4489                         }
4490                         $formats_nav .= ': ' .
4491                                 $cgi->a({-href => href(action=>"commitdiff",
4492                                                        hash=>$hash_parent)},
4493                                         esc_html($hash_parent_short)) .
4494                                 ')';
4495                 } elsif (!$co{'parent'}) {
4496                         # --root commitdiff
4497                         $formats_nav .= ' (initial)';
4498                 } elsif (scalar @{$co{'parents'}} == 1) {
4499                         # single parent commit
4500                         $formats_nav .=
4501                                 ' (parent: ' .
4502                                 $cgi->a({-href => href(action=>"commitdiff",
4503                                                        hash=>$co{'parent'})},
4504                                         esc_html(substr($co{'parent'}, 0, 7))) .
4505                                 ')';
4506                 } else {
4507                         # merge commit
4508                         $formats_nav .=
4509                                 ' (merge: ' .
4510                                 join(' ', map {
4511                                         $cgi->a({-href => href(action=>"commitdiff",
4512                                                                hash=>$_)},
4513                                                 esc_html(substr($_, 0, 7)));
4514                                 } @{$co{'parents'}} ) .
4515                                 ')';
4516                 }
4517         }
4518
4519         my $hash_parent_param = $hash_parent;
4520         if (!defined $hash_parent) {
4521                 $hash_parent_param =
4522                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4523         }
4524
4525         # read commitdiff
4526         my $fd;
4527         my @difftree;
4528         if ($format eq 'html') {
4529                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4530                         "--no-commit-id", "--patch-with-raw", "--full-index",
4531                         $hash_parent_param, $hash, "--"
4532                         or die_error(undef, "Open git-diff-tree failed");
4533
4534                 while (my $line = <$fd>) {
4535                         chomp $line;
4536                         # empty line ends raw part of diff-tree output
4537                         last unless $line;
4538                         push @difftree, scalar parse_difftree_raw_line($line);
4539                 }
4540
4541         } elsif ($format eq 'plain') {
4542                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4543                         '-p', $hash_parent_param, $hash, "--"
4544                         or die_error(undef, "Open git-diff-tree failed");
4545
4546         } else {
4547                 die_error(undef, "Unknown commitdiff format");
4548         }
4549
4550         # non-textual hash id's can be cached
4551         my $expires;
4552         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4553                 $expires = "+1d";
4554         }
4555
4556         # write commit message
4557         if ($format eq 'html') {
4558                 my $refs = git_get_references();
4559                 my $ref = format_ref_marker($refs, $co{'id'});
4560
4561                 git_header_html(undef, $expires);
4562                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4563                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4564                 git_print_authorship(\%co);
4565                 print "<div class=\"page_body\">\n";
4566                 if (@{$co{'comment'}} > 1) {
4567                         print "<div class=\"log\">\n";
4568                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4569                         print "</div>\n"; # class="log"
4570                 }
4571
4572         } elsif ($format eq 'plain') {
4573                 my $refs = git_get_references("tags");
4574                 my $tagname = git_get_rev_name_tags($hash);
4575                 my $filename = basename($project) . "-$hash.patch";
4576
4577                 print $cgi->header(
4578                         -type => 'text/plain',
4579                         -charset => 'utf-8',
4580                         -expires => $expires,
4581                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4582                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4583                 print <<TEXT;
4584 From: $co{'author'}
4585 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4586 Subject: $co{'title'}
4587 TEXT
4588                 print "X-Git-Tag: $tagname\n" if $tagname;
4589                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4590
4591                 foreach my $line (@{$co{'comment'}}) {
4592                         print "$line\n";
4593                 }
4594                 print "---\n\n";
4595         }
4596
4597         # write patch
4598         if ($format eq 'html') {
4599                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4600                 print "<br/>\n";
4601
4602                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4603                 close $fd;
4604                 print "</div>\n"; # class="page_body"
4605                 git_footer_html();
4606
4607         } elsif ($format eq 'plain') {
4608                 local $/ = undef;
4609                 print <$fd>;
4610                 close $fd
4611                         or print "Reading git-diff-tree failed\n";
4612         }
4613 }
4614
4615 sub git_commitdiff_plain {
4616         git_commitdiff('plain');
4617 }
4618
4619 sub git_history {
4620         if (!defined $hash_base) {
4621                 $hash_base = git_get_head_hash($project);
4622         }
4623         if (!defined $page) {
4624                 $page = 0;
4625         }
4626         my $ftype;
4627         my %co = parse_commit($hash_base);
4628         if (!%co) {
4629                 die_error(undef, "Unknown commit object");
4630         }
4631
4632         my $refs = git_get_references();
4633         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4634
4635         if (!defined $hash && defined $file_name) {
4636                 $hash = git_get_hash_by_path($hash_base, $file_name);
4637         }
4638         if (defined $hash) {
4639                 $ftype = git_get_type($hash);
4640         }
4641
4642         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4643
4644         my $paging_nav = '';
4645         if ($page > 0) {
4646                 $paging_nav .=
4647                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4648                                                file_name=>$file_name)},
4649                                 "first");
4650                 $paging_nav .= " &sdot; " .
4651                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4652                                                file_name=>$file_name, page=>$page-1),
4653                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4654         } else {
4655                 $paging_nav .= "first";
4656                 $paging_nav .= " &sdot; prev";
4657         }
4658         if ($#commitlist >= 100) {
4659                 $paging_nav .= " &sdot; " .
4660                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4661                                                file_name=>$file_name, page=>$page+1),
4662                                  -accesskey => "n", -title => "Alt-n"}, "next");
4663         } else {
4664                 $paging_nav .= " &sdot; next";
4665         }
4666         my $next_link = '';
4667         if ($#commitlist >= 100) {
4668                 $next_link =
4669                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4670                                                file_name=>$file_name, page=>$page+1),
4671                                  -accesskey => "n", -title => "Alt-n"}, "next");
4672         }
4673
4674         git_header_html();
4675         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4676         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4677         git_print_page_path($file_name, $ftype, $hash_base);
4678
4679         git_history_body(\@commitlist, 0, 99,
4680                          $refs, $hash_base, $ftype, $next_link);
4681
4682         git_footer_html();
4683 }
4684
4685 sub git_search {
4686         my ($have_search) = gitweb_check_feature('search');
4687         if (!$have_search) {
4688                 die_error('403 Permission denied', "Permission denied");
4689         }
4690         if (!defined $searchtext) {
4691                 die_error(undef, "Text field empty");
4692         }
4693         if (!defined $hash) {
4694                 $hash = git_get_head_hash($project);
4695         }
4696         my %co = parse_commit($hash);
4697         if (!%co) {
4698                 die_error(undef, "Unknown commit object");
4699         }
4700         if (!defined $page) {
4701                 $page = 0;
4702         }
4703
4704         $searchtype ||= 'commit';
4705         if ($searchtype eq 'pickaxe') {
4706                 # pickaxe may take all resources of your box and run for several minutes
4707                 # with every query - so decide by yourself how public you make this feature
4708                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4709                 if (!$have_pickaxe) {
4710                         die_error('403 Permission denied', "Permission denied");
4711                 }
4712         }
4713         if ($searchtype eq 'grep') {
4714                 my ($have_grep) = gitweb_check_feature('grep');
4715                 if (!$have_grep) {
4716                         die_error('403 Permission denied', "Permission denied");
4717                 }
4718         }
4719
4720         git_header_html();
4721
4722         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4723                 my $greptype;
4724                 if ($searchtype eq 'commit') {
4725                         $greptype = "--grep=";
4726                 } elsif ($searchtype eq 'author') {
4727                         $greptype = "--author=";
4728                 } elsif ($searchtype eq 'committer') {
4729                         $greptype = "--committer=";
4730                 }
4731                 $greptype .= $search_regexp;
4732                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4733
4734                 my $paging_nav = '';
4735                 if ($page > 0) {
4736                         $paging_nav .=
4737                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4738                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4739                                         "first");
4740                         $paging_nav .= " &sdot; " .
4741                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4742                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4743                                                        page=>$page-1),
4744                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4745                 } else {
4746                         $paging_nav .= "first";
4747                         $paging_nav .= " &sdot; prev";
4748                 }
4749                 if ($#commitlist >= 100) {
4750                         $paging_nav .= " &sdot; " .
4751                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4752                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4753                                                        page=>$page+1),
4754                                          -accesskey => "n", -title => "Alt-n"}, "next");
4755                 } else {
4756                         $paging_nav .= " &sdot; next";
4757                 }
4758                 my $next_link = '';
4759                 if ($#commitlist >= 100) {
4760                         $next_link =
4761                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4762                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4763                                                        page=>$page+1),
4764                                          -accesskey => "n", -title => "Alt-n"}, "next");
4765                 }
4766
4767                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4768                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4769                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4770         }
4771
4772         if ($searchtype eq 'pickaxe') {
4773                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4774                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4775
4776                 print "<table cellspacing=\"0\">\n";
4777                 my $alternate = 1;
4778                 $/ = "\n";
4779                 my $git_command = git_cmd_str();
4780                 my $searchqtext = $searchtext;
4781                 $searchqtext =~ s/'/'\\''/;
4782                 open my $fd, "-|", "$git_command rev-list $hash | " .
4783                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
4784                 undef %co;
4785                 my @files;
4786                 while (my $line = <$fd>) {
4787                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4788                                 my %set;
4789                                 $set{'file'} = $6;
4790                                 $set{'from_id'} = $3;
4791                                 $set{'to_id'} = $4;
4792                                 $set{'id'} = $set{'to_id'};
4793                                 if ($set{'id'} =~ m/0{40}/) {
4794                                         $set{'id'} = $set{'from_id'};
4795                                 }
4796                                 if ($set{'id'} =~ m/0{40}/) {
4797                                         next;
4798                                 }
4799                                 push @files, \%set;
4800                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4801                                 if (%co) {
4802                                         if ($alternate) {
4803                                                 print "<tr class=\"dark\">\n";
4804                                         } else {
4805                                                 print "<tr class=\"light\">\n";
4806                                         }
4807                                         $alternate ^= 1;
4808                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4809                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4810                                               "<td>" .
4811                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4812                                                       -class => "list subject"},
4813                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4814                                         while (my $setref = shift @files) {
4815                                                 my %set = %$setref;
4816                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4817                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4818                                                               -class => "list"},
4819                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4820                                                       "<br/>\n";
4821                                         }
4822                                         print "</td>\n" .
4823                                               "<td class=\"link\">" .
4824                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4825                                               " | " .
4826                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4827                                         print "</td>\n" .
4828                                               "</tr>\n";
4829                                 }
4830                                 %co = parse_commit($1);
4831                         }
4832                 }
4833                 close $fd;
4834
4835                 print "</table>\n";
4836         }
4837
4838         if ($searchtype eq 'grep') {
4839                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4840                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4841
4842                 print "<table cellspacing=\"0\">\n";
4843                 my $alternate = 1;
4844                 my $matches = 0;
4845                 $/ = "\n";
4846                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
4847                 my $lastfile = '';
4848                 while (my $line = <$fd>) {
4849                         chomp $line;
4850                         my ($file, $lno, $ltext, $binary);
4851                         last if ($matches++ > 1000);
4852                         if ($line =~ /^Binary file (.+) matches$/) {
4853                                 $file = $1;
4854                                 $binary = 1;
4855                         } else {
4856                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
4857                         }
4858                         if ($file ne $lastfile) {
4859                                 $lastfile and print "</td></tr>\n";
4860                                 if ($alternate++) {
4861                                         print "<tr class=\"dark\">\n";
4862                                 } else {
4863                                         print "<tr class=\"light\">\n";
4864                                 }
4865                                 print "<td class=\"list\">".
4866                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4867                                                                file_name=>"$file"),
4868                                                 -class => "list"}, esc_path($file));
4869                                 print "</td><td>\n";
4870                                 $lastfile = $file;
4871                         }
4872                         if ($binary) {
4873                                 print "<div class=\"binary\">Binary file</div>\n";
4874                         } else {
4875                                 $ltext = untabify($ltext);
4876                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
4877                                         $ltext = esc_html($1, -nbsp=>1);
4878                                         $ltext .= '<span class="match">';
4879                                         $ltext .= esc_html($2, -nbsp=>1);
4880                                         $ltext .= '</span>';
4881                                         $ltext .= esc_html($3, -nbsp=>1);
4882                                 } else {
4883                                         $ltext = esc_html($ltext, -nbsp=>1);
4884                                 }
4885                                 print "<div class=\"pre\">" .
4886                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4887                                                                file_name=>"$file").'#l'.$lno,
4888                                                 -class => "linenr"}, sprintf('%4i', $lno))
4889                                         . ' ' .  $ltext . "</div>\n";
4890                         }
4891                 }
4892                 if ($lastfile) {
4893                         print "</td></tr>\n";
4894                         if ($matches > 1000) {
4895                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
4896                         }
4897                 } else {
4898                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
4899                 }
4900                 close $fd;
4901
4902                 print "</table>\n";
4903         }
4904         git_footer_html();
4905 }
4906
4907 sub git_search_help {
4908         git_header_html();
4909         git_print_page_nav('','', $hash,$hash,$hash);
4910         print <<EOT;
4911 <dl>
4912 <dt><b>commit</b></dt>
4913 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4914 EOT
4915         my ($have_grep) = gitweb_check_feature('grep');
4916         if ($have_grep) {
4917                 print <<EOT;
4918 <dt><b>grep</b></dt>
4919 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
4920     a different one) are searched for the given
4921 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
4922 (POSIX extended) and the matches are listed. On large
4923 trees, this search can take a while and put some strain on the server, so please use it with
4924 some consideration.</dd>
4925 EOT
4926         }
4927         print <<EOT;
4928 <dt><b>author</b></dt>
4929 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4930 <dt><b>committer</b></dt>
4931 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4932 EOT
4933         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4934         if ($have_pickaxe) {
4935                 print <<EOT;
4936 <dt><b>pickaxe</b></dt>
4937 <dd>All commits that caused the string to appear or disappear from any file (changes that
4938 added, removed or "modified" the string) will be listed. This search can take a while and
4939 takes a lot of strain on the server, so please use it wisely.</dd>
4940 EOT
4941         }
4942         print "</dl>\n";
4943         git_footer_html();
4944 }
4945
4946 sub git_shortlog {
4947         my $head = git_get_head_hash($project);
4948         if (!defined $hash) {
4949                 $hash = $head;
4950         }
4951         if (!defined $page) {
4952                 $page = 0;
4953         }
4954         my $refs = git_get_references();
4955
4956         my @commitlist = parse_commits($hash, 101, (100 * $page));
4957
4958         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4959         my $next_link = '';
4960         if ($#commitlist >= 100) {
4961                 $next_link =
4962                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4963                                  -accesskey => "n", -title => "Alt-n"}, "next");
4964         }
4965
4966         git_header_html();
4967         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4968         git_print_header_div('summary', $project);
4969
4970         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4971
4972         git_footer_html();
4973 }
4974
4975 ## ......................................................................
4976 ## feeds (RSS, Atom; OPML)
4977
4978 sub git_feed {
4979         my $format = shift || 'atom';
4980         my ($have_blame) = gitweb_check_feature('blame');
4981
4982         # Atom: http://www.atomenabled.org/developers/syndication/
4983         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4984         if ($format ne 'rss' && $format ne 'atom') {
4985                 die_error(undef, "Unknown web feed format");
4986         }
4987
4988         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4989         my $head = $hash || 'HEAD';
4990         my @commitlist = parse_commits($head, 150);
4991
4992         my %latest_commit;
4993         my %latest_date;
4994         my $content_type = "application/$format+xml";
4995         if (defined $cgi->http('HTTP_ACCEPT') &&
4996                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4997                 # browser (feed reader) prefers text/xml
4998                 $content_type = 'text/xml';
4999         }
5000         if (defined($commitlist[0])) {
5001                 %latest_commit = %{$commitlist[0]};
5002                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5003                 print $cgi->header(
5004                         -type => $content_type,
5005                         -charset => 'utf-8',
5006                         -last_modified => $latest_date{'rfc2822'});
5007         } else {
5008                 print $cgi->header(
5009                         -type => $content_type,
5010                         -charset => 'utf-8');
5011         }
5012
5013         # Optimization: skip generating the body if client asks only
5014         # for Last-Modified date.
5015         return if ($cgi->request_method() eq 'HEAD');
5016
5017         # header variables
5018         my $title = "$site_name - $project/$action";
5019         my $feed_type = 'log';
5020         if (defined $hash) {
5021                 $title .= " - '$hash'";
5022                 $feed_type = 'branch log';
5023                 if (defined $file_name) {
5024                         $title .= " :: $file_name";
5025                         $feed_type = 'history';
5026                 }
5027         } elsif (defined $file_name) {
5028                 $title .= " - $file_name";
5029                 $feed_type = 'history';
5030         }
5031         $title .= " $feed_type";
5032         my $descr = git_get_project_description($project);
5033         if (defined $descr) {
5034                 $descr = esc_html($descr);
5035         } else {
5036                 $descr = "$project " .
5037                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5038                          " feed";
5039         }
5040         my $owner = git_get_project_owner($project);
5041         $owner = esc_html($owner);
5042
5043         #header
5044         my $alt_url;
5045         if (defined $file_name) {
5046                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5047         } elsif (defined $hash) {
5048                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5049         } else {
5050                 $alt_url = href(-full=>1, action=>"summary");
5051         }
5052         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5053         if ($format eq 'rss') {
5054                 print <<XML;
5055 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5056 <channel>
5057 XML
5058                 print "<title>$title</title>\n" .
5059                       "<link>$alt_url</link>\n" .
5060                       "<description>$descr</description>\n" .
5061                       "<language>en</language>\n";
5062         } elsif ($format eq 'atom') {
5063                 print <<XML;
5064 <feed xmlns="http://www.w3.org/2005/Atom">
5065 XML
5066                 print "<title>$title</title>\n" .
5067                       "<subtitle>$descr</subtitle>\n" .
5068                       '<link rel="alternate" type="text/html" href="' .
5069                       $alt_url . '" />' . "\n" .
5070                       '<link rel="self" type="' . $content_type . '" href="' .
5071                       $cgi->self_url() . '" />' . "\n" .
5072                       "<id>" . href(-full=>1) . "</id>\n" .
5073                       # use project owner for feed author
5074                       "<author><name>$owner</name></author>\n";
5075                 if (defined $favicon) {
5076                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5077                 }
5078                 if (defined $logo_url) {
5079                         # not twice as wide as tall: 72 x 27 pixels
5080                         print "<logo>" . esc_url($logo) . "</logo>\n";
5081                 }
5082                 if (! %latest_date) {
5083                         # dummy date to keep the feed valid until commits trickle in:
5084                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5085                 } else {
5086                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5087                 }
5088         }
5089
5090         # contents
5091         for (my $i = 0; $i <= $#commitlist; $i++) {
5092                 my %co = %{$commitlist[$i]};
5093                 my $commit = $co{'id'};
5094                 # we read 150, we always show 30 and the ones more recent than 48 hours
5095                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5096                         last;
5097                 }
5098                 my %cd = parse_date($co{'author_epoch'});
5099
5100                 # get list of changed files
5101                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5102                         $co{'parent'} || "--root",
5103                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5104                         or next;
5105                 my @difftree = map { chomp; $_ } <$fd>;
5106                 close $fd
5107                         or next;
5108
5109                 # print element (entry, item)
5110                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5111                 if ($format eq 'rss') {
5112                         print "<item>\n" .
5113                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5114                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5115                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5116                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5117                               "<link>$co_url</link>\n" .
5118                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5119                               "<content:encoded>" .
5120                               "<![CDATA[\n";
5121                 } elsif ($format eq 'atom') {
5122                         print "<entry>\n" .
5123                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5124                               "<updated>$cd{'iso-8601'}</updated>\n" .
5125                               "<author>\n" .
5126                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5127                         if ($co{'author_email'}) {
5128                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5129                         }
5130                         print "</author>\n" .
5131                               # use committer for contributor
5132                               "<contributor>\n" .
5133                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5134                         if ($co{'committer_email'}) {
5135                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5136                         }
5137                         print "</contributor>\n" .
5138                               "<published>$cd{'iso-8601'}</published>\n" .
5139                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5140                               "<id>$co_url</id>\n" .
5141                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5142                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5143                 }
5144                 my $comment = $co{'comment'};
5145                 print "<pre>\n";
5146                 foreach my $line (@$comment) {
5147                         $line = esc_html($line);
5148                         print "$line\n";
5149                 }
5150                 print "</pre><ul>\n";
5151                 foreach my $difftree_line (@difftree) {
5152                         my %difftree = parse_difftree_raw_line($difftree_line);
5153                         next if !$difftree{'from_id'};
5154
5155                         my $file = $difftree{'file'} || $difftree{'to_file'};
5156
5157                         print "<li>" .
5158                               "[" .
5159                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5160                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5161                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5162                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5163                                       -title => "diff"}, 'D');
5164                         if ($have_blame) {
5165                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5166                                                              file_name=>$file, hash_base=>$commit),
5167                                               -title => "blame"}, 'B');
5168                         }
5169                         # if this is not a feed of a file history
5170                         if (!defined $file_name || $file_name ne $file) {
5171                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5172                                                              file_name=>$file, hash=>$commit),
5173                                               -title => "history"}, 'H');
5174                         }
5175                         $file = esc_path($file);
5176                         print "] ".
5177                               "$file</li>\n";
5178                 }
5179                 if ($format eq 'rss') {
5180                         print "</ul>]]>\n" .
5181                               "</content:encoded>\n" .
5182                               "</item>\n";
5183                 } elsif ($format eq 'atom') {
5184                         print "</ul>\n</div>\n" .
5185                               "</content>\n" .
5186                               "</entry>\n";
5187                 }
5188         }
5189
5190         # end of feed
5191         if ($format eq 'rss') {
5192                 print "</channel>\n</rss>\n";
5193         }       elsif ($format eq 'atom') {
5194                 print "</feed>\n";
5195         }
5196 }
5197
5198 sub git_rss {
5199         git_feed('rss');
5200 }
5201
5202 sub git_atom {
5203         git_feed('atom');
5204 }
5205
5206 sub git_opml {
5207         my @list = git_get_projects_list();
5208
5209         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5210         print <<XML;
5211 <?xml version="1.0" encoding="utf-8"?>
5212 <opml version="1.0">
5213 <head>
5214   <title>$site_name OPML Export</title>
5215 </head>
5216 <body>
5217 <outline text="git RSS feeds">
5218 XML
5219
5220         foreach my $pr (@list) {
5221                 my %proj = %$pr;
5222                 my $head = git_get_head_hash($proj{'path'});
5223                 if (!defined $head) {
5224                         next;
5225                 }
5226                 $git_dir = "$projectroot/$proj{'path'}";
5227                 my %co = parse_commit($head);
5228                 if (!%co) {
5229                         next;
5230                 }
5231
5232                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5233                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5234                 my $html = "$my_url?p=$proj{'path'};a=summary";
5235                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5236         }
5237         print <<XML;
5238 </outline>
5239 </body>
5240 </opml>
5241 XML
5242 }