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