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