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

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