gitweb/gitweb.perl

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