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