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) = @_;
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'} = $header;
1286         my @parents;
1287         while (my $line = shift @commit_lines) {
1288                 last if $line eq "\n";
1289                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1290                         $co{'tree'} = $1;
1291                 } elsif ($line =~ m/^parent ([0-9a-fA-F]{40})$/) {
1292                         push @parents, $1;
1293                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1294                         $co{'author'} = $1;
1295                         $co{'author_epoch'} = $2;
1296                         $co{'author_tz'} = $3;
1297                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1298                                 $co{'author_name'}  = $1;
1299                                 $co{'author_email'} = $2;
1300                         } else {
1301                                 $co{'author_name'} = $co{'author'};
1302                         }
1303                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1304                         $co{'committer'} = $1;
1305                         $co{'committer_epoch'} = $2;
1306                         $co{'committer_tz'} = $3;
1307                         $co{'committer_name'} = $co{'committer'};
1308                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1309                                 $co{'committer_name'}  = $1;
1310                                 $co{'committer_email'} = $2;
1311                         } else {
1312                                 $co{'committer_name'} = $co{'committer'};
1313                         }
1314                 }
1315         }
1316         if (!defined $co{'tree'}) {
1317                 return;
1318         };
1319         $co{'parents'} = \@parents;
1320         $co{'parent'} = $parents[0];
1321
1322         foreach my $title (@commit_lines) {
1323                 $title =~ s/^    //;
1324                 if ($title ne "") {
1325                         $co{'title'} = chop_str($title, 80, 5);
1326                         # remove leading stuff of merges to make the interesting part visible
1327                         if (length($title) > 50) {
1328                                 $title =~ s/^Automatic //;
1329                                 $title =~ s/^merge (of|with) /Merge ... /i;
1330                                 if (length($title) > 50) {
1331                                         $title =~ s/(http|rsync):\/\///;
1332                                 }
1333                                 if (length($title) > 50) {
1334                                         $title =~ s/(master|www|rsync)\.//;
1335                                 }
1336                                 if (length($title) > 50) {
1337                                         $title =~ s/kernel.org:?//;
1338                                 }
1339                                 if (length($title) > 50) {
1340                                         $title =~ s/\/pub\/scm//;
1341                                 }
1342                         }
1343                         $co{'title_short'} = chop_str($title, 50, 5);
1344                         last;
1345                 }
1346         }
1347         if ($co{'title'} eq "") {
1348                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1349         }
1350         # remove added spaces
1351         foreach my $line (@commit_lines) {
1352                 $line =~ s/^    //;
1353         }
1354         $co{'comment'} = \@commit_lines;
1355
1356         my $age = time - $co{'committer_epoch'};
1357         $co{'age'} = $age;
1358         $co{'age_string'} = age_string($age);
1359         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1360         if ($age > 60*60*24*7*2) {
1361                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1362                 $co{'age_string_age'} = $co{'age_string'};
1363         } else {
1364                 $co{'age_string_date'} = $co{'age_string'};
1365                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1366         }
1367         return %co;
1368 }
1369
1370 sub parse_commit {
1371         my ($commit_id) = @_;
1372         my %co;
1373
1374         local $/ = "\0";
1375
1376         open my $fd, "-|", git_cmd(), "rev-list",
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>);
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         $skip ||= 0;
1394
1395         # Delete once rev-list supports the --skip option
1396         if ($skip > 0) {
1397                 open my $fd, "-|", git_cmd(), "rev-list",
1398                         ($arg ? ($arg) : ()),
1399                         ("--max-count=" . ($maxcount + $skip)),
1400                         $commit_id,
1401                         "--",
1402                         ($filename ? ($filename) : ())
1403                         or die_error(undef, "Open git-rev-list failed");
1404                 while (my $line = <$fd>) {
1405                         if ($skip-- <= 0) {
1406                                 chomp $line;
1407                                 my %co = parse_commit($line);
1408                                 push @cos, \%co;
1409                         }
1410                 }
1411                 close $fd;
1412
1413                 return wantarray ? @cos : \@cos;
1414         }
1415
1416         local $/ = "\0";
1417
1418         open my $fd, "-|", git_cmd(), "rev-list",
1419                 "--header",
1420                 ($arg ? ($arg) : ()),
1421                 ("--max-count=" . $maxcount),
1422                 # Add once rev-list supports the --skip option
1423                 # ("--skip=" . $skip),
1424                 $commit_id,
1425                 "--",
1426                 ($filename ? ($filename) : ())
1427                 or die_error(undef, "Open git-rev-list failed");
1428         while (my $line = <$fd>) {
1429                 my %co = parse_commit_text($line);
1430                 push @cos, \%co;
1431         }
1432         close $fd;
1433
1434         return wantarray ? @cos : \@cos;
1435 }
1436
1437 # parse ref from ref_file, given by ref_id, with given type
1438 sub parse_ref {
1439         my $ref_file = shift;
1440         my $ref_id = shift;
1441         my $type = shift || git_get_type($ref_id);
1442         my %ref_item;
1443
1444         $ref_item{'type'} = $type;
1445         $ref_item{'id'} = $ref_id;
1446         $ref_item{'epoch'} = 0;
1447         $ref_item{'age'} = "unknown";
1448         if ($type eq "tag") {
1449                 my %tag = parse_tag($ref_id);
1450                 $ref_item{'comment'} = $tag{'comment'};
1451                 if ($tag{'type'} eq "commit") {
1452                         my %co = parse_commit($tag{'object'});
1453                         $ref_item{'epoch'} = $co{'committer_epoch'};
1454                         $ref_item{'age'} = $co{'age_string'};
1455                 } elsif (defined($tag{'epoch'})) {
1456                         my $age = time - $tag{'epoch'};
1457                         $ref_item{'epoch'} = $tag{'epoch'};
1458                         $ref_item{'age'} = age_string($age);
1459                 }
1460                 $ref_item{'reftype'} = $tag{'type'};
1461                 $ref_item{'name'} = $tag{'name'};
1462                 $ref_item{'refid'} = $tag{'object'};
1463         } elsif ($type eq "commit"){
1464                 my %co = parse_commit($ref_id);
1465                 $ref_item{'reftype'} = "commit";
1466                 $ref_item{'name'} = $ref_file;
1467                 $ref_item{'title'} = $co{'title'};
1468                 $ref_item{'refid'} = $ref_id;
1469                 $ref_item{'epoch'} = $co{'committer_epoch'};
1470                 $ref_item{'age'} = $co{'age_string'};
1471         } else {
1472                 $ref_item{'reftype'} = $type;
1473                 $ref_item{'name'} = $ref_file;
1474                 $ref_item{'refid'} = $ref_id;
1475         }
1476
1477         return %ref_item;
1478 }
1479
1480 # parse line of git-diff-tree "raw" output
1481 sub parse_difftree_raw_line {
1482         my $line = shift;
1483         my %res;
1484
1485         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1486         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1487         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1488                 $res{'from_mode'} = $1;
1489                 $res{'to_mode'} = $2;
1490                 $res{'from_id'} = $3;
1491                 $res{'to_id'} = $4;
1492                 $res{'status'} = $5;
1493                 $res{'similarity'} = $6;
1494                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1495                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1496                 } else {
1497                         $res{'file'} = unquote($7);
1498                 }
1499         }
1500         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1501         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1502                 $res{'commit'} = $1;
1503         }
1504
1505         return wantarray ? %res : \%res;
1506 }
1507
1508 # parse line of git-ls-tree output
1509 sub parse_ls_tree_line ($;%) {
1510         my $line = shift;
1511         my %opts = @_;
1512         my %res;
1513
1514         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1515         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1516
1517         $res{'mode'} = $1;
1518         $res{'type'} = $2;
1519         $res{'hash'} = $3;
1520         if ($opts{'-z'}) {
1521                 $res{'name'} = $4;
1522         } else {
1523                 $res{'name'} = unquote($4);
1524         }
1525
1526         return wantarray ? %res : \%res;
1527 }
1528
1529 ## ......................................................................
1530 ## parse to array of hashes functions
1531
1532 sub git_get_heads_list {
1533         my $limit = shift;
1534         my @headslist;
1535
1536         open my $fd, '-|', git_cmd(), 'for-each-ref',
1537                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1538                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1539                 'refs/heads'
1540                 or return;
1541         while (my $line = <$fd>) {
1542                 my %ref_item;
1543
1544                 chomp $line;
1545                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1546                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1547                 my ($committer, $epoch, $tz) =
1548                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1549                 $name =~ s!^refs/heads/!!;
1550
1551                 $ref_item{'name'}  = $name;
1552                 $ref_item{'id'}    = $hash;
1553                 $ref_item{'title'} = $title || '(no commit message)';
1554                 $ref_item{'epoch'} = $epoch;
1555                 if ($epoch) {
1556                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1557                 } else {
1558                         $ref_item{'age'} = "unknown";
1559                 }
1560
1561                 push @headslist, \%ref_item;
1562         }
1563         close $fd;
1564
1565         return wantarray ? @headslist : \@headslist;
1566 }
1567
1568 sub git_get_tags_list {
1569         my $limit = shift;
1570         my @tagslist;
1571
1572         open my $fd, '-|', git_cmd(), 'for-each-ref',
1573                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1574                 '--format=%(objectname) %(objecttype) %(refname) '.
1575                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1576                 'refs/tags'
1577                 or return;
1578         while (my $line = <$fd>) {
1579                 my %ref_item;
1580
1581                 chomp $line;
1582                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1583                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1584                 my ($creator, $epoch, $tz) =
1585                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1586                 $name =~ s!^refs/tags/!!;
1587
1588                 $ref_item{'type'} = $type;
1589                 $ref_item{'id'} = $id;
1590                 $ref_item{'name'} = $name;
1591                 if ($type eq "tag") {
1592                         $ref_item{'subject'} = $title;
1593                         $ref_item{'reftype'} = $reftype;
1594                         $ref_item{'refid'}   = $refid;
1595                 } else {
1596                         $ref_item{'reftype'} = $type;
1597                         $ref_item{'refid'}   = $id;
1598                 }
1599
1600                 if ($type eq "tag" || $type eq "commit") {
1601                         $ref_item{'epoch'} = $epoch;
1602                         if ($epoch) {
1603                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1604                         } else {
1605                                 $ref_item{'age'} = "unknown";
1606                         }
1607                 }
1608
1609                 push @tagslist, \%ref_item;
1610         }
1611         close $fd;
1612
1613         return wantarray ? @tagslist : \@tagslist;
1614 }
1615
1616 ## ----------------------------------------------------------------------
1617 ## filesystem-related functions
1618
1619 sub get_file_owner {
1620         my $path = shift;
1621
1622         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1623         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1624         if (!defined $gcos) {
1625                 return undef;
1626         }
1627         my $owner = $gcos;
1628         $owner =~ s/[,;].*$//;
1629         return to_utf8($owner);
1630 }
1631
1632 ## ......................................................................
1633 ## mimetype related functions
1634
1635 sub mimetype_guess_file {
1636         my $filename = shift;
1637         my $mimemap = shift;
1638         -r $mimemap or return undef;
1639
1640         my %mimemap;
1641         open(MIME, $mimemap) or return undef;
1642         while (<MIME>) {
1643                 next if m/^#/; # skip comments
1644                 my ($mime, $exts) = split(/\t+/);
1645                 if (defined $exts) {
1646                         my @exts = split(/\s+/, $exts);
1647                         foreach my $ext (@exts) {
1648                                 $mimemap{$ext} = $mime;
1649                         }
1650                 }
1651         }
1652         close(MIME);
1653
1654         $filename =~ /\.([^.]*)$/;
1655         return $mimemap{$1};
1656 }
1657
1658 sub mimetype_guess {
1659         my $filename = shift;
1660         my $mime;
1661         $filename =~ /\./ or return undef;
1662
1663         if ($mimetypes_file) {
1664                 my $file = $mimetypes_file;
1665                 if ($file !~ m!^/!) { # if it is relative path
1666                         # it is relative to project
1667                         $file = "$projectroot/$project/$file";
1668                 }
1669                 $mime = mimetype_guess_file($filename, $file);
1670         }
1671         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1672         return $mime;
1673 }
1674
1675 sub blob_mimetype {
1676         my $fd = shift;
1677         my $filename = shift;
1678
1679         if ($filename) {
1680                 my $mime = mimetype_guess($filename);
1681                 $mime and return $mime;
1682         }
1683
1684         # just in case
1685         return $default_blob_plain_mimetype unless $fd;
1686
1687         if (-T $fd) {
1688                 return 'text/plain' .
1689                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1690         } elsif (! $filename) {
1691                 return 'application/octet-stream';
1692         } elsif ($filename =~ m/\.png$/i) {
1693                 return 'image/png';
1694         } elsif ($filename =~ m/\.gif$/i) {
1695                 return 'image/gif';
1696         } elsif ($filename =~ m/\.jpe?g$/i) {
1697                 return 'image/jpeg';
1698         } else {
1699                 return 'application/octet-stream';
1700         }
1701 }
1702
1703 ## ======================================================================
1704 ## functions printing HTML: header, footer, error page
1705
1706 sub git_header_html {
1707         my $status = shift || "200 OK";
1708         my $expires = shift;
1709
1710         my $title = "$site_name";
1711         if (defined $project) {
1712                 $title .= " - $project";
1713                 if (defined $action) {
1714                         $title .= "/$action";
1715                         if (defined $file_name) {
1716                                 $title .= " - " . esc_path($file_name);
1717                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1718                                         $title .= "/";
1719                                 }
1720                         }
1721                 }
1722         }
1723         my $content_type;
1724         # require explicit support from the UA if we are to send the page as
1725         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1726         # we have to do this because MSIE sometimes globs '*/*', pretending to
1727         # support xhtml+xml but choking when it gets what it asked for.
1728         if (defined $cgi->http('HTTP_ACCEPT') &&
1729             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1730             $cgi->Accept('application/xhtml+xml') != 0) {
1731                 $content_type = 'application/xhtml+xml';
1732         } else {
1733                 $content_type = 'text/html';
1734         }
1735         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1736                            -status=> $status, -expires => $expires);
1737         print <<EOF;
1738 <?xml version="1.0" encoding="utf-8"?>
1739 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1740 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1741 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1742 <!-- git core binaries version $git_version -->
1743 <head>
1744 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1745 <meta name="generator" content="gitweb/$version git/$git_version"/>
1746 <meta name="robots" content="index, nofollow"/>
1747 <title>$title</title>
1748 EOF
1749 # print out each stylesheet that exist
1750         if (defined $stylesheet) {
1751 #provides backwards capability for those people who define style sheet in a config file
1752                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1753         } else {
1754                 foreach my $stylesheet (@stylesheets) {
1755                         next unless $stylesheet;
1756                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1757                 }
1758         }
1759         if (defined $project) {
1760                 printf('<link rel="alternate" title="%s log RSS feed" '.
1761                        'href="%s" type="application/rss+xml" />'."\n",
1762                        esc_param($project), href(action=>"rss"));
1763                 printf('<link rel="alternate" title="%s log Atom feed" '.
1764                        'href="%s" type="application/atom+xml" />'."\n",
1765                        esc_param($project), href(action=>"atom"));
1766         } else {
1767                 printf('<link rel="alternate" title="%s projects list" '.
1768                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1769                        $site_name, href(project=>undef, action=>"project_index"));
1770                 printf('<link rel="alternate" title="%s projects feeds" '.
1771                        'href="%s" type="text/x-opml"/>'."\n",
1772                        $site_name, href(project=>undef, action=>"opml"));
1773         }
1774         if (defined $favicon) {
1775                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1776         }
1777
1778         print "</head>\n" .
1779               "<body>\n";
1780
1781         if (-f $site_header) {
1782                 open (my $fd, $site_header);
1783                 print <$fd>;
1784                 close $fd;
1785         }
1786
1787         print "<div class=\"page_header\">\n" .
1788               $cgi->a({-href => esc_url($logo_url),
1789                        -title => $logo_label},
1790                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1791         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1792         if (defined $project) {
1793                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1794                 if (defined $action) {
1795                         print " / $action";
1796                 }
1797                 print "\n";
1798         }
1799         my ($have_search) = gitweb_check_feature('search');
1800         if ((defined $project) && ($have_search)) {
1801                 if (!defined $searchtext) {
1802                         $searchtext = "";
1803                 }
1804                 my $search_hash;
1805                 if (defined $hash_base) {
1806                         $search_hash = $hash_base;
1807                 } elsif (defined $hash) {
1808                         $search_hash = $hash;
1809                 } else {
1810                         $search_hash = "HEAD";
1811                 }
1812                 $cgi->param("a", "search");
1813                 $cgi->param("h", $search_hash);
1814                 $cgi->param("p", $project);
1815                 print $cgi->startform(-method => "get", -action => $my_uri) .
1816                       "<div class=\"search\">\n" .
1817                       $cgi->hidden(-name => "p") . "\n" .
1818                       $cgi->hidden(-name => "a") . "\n" .
1819                       $cgi->hidden(-name => "h") . "\n" .
1820                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1821                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1822                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1823                       " search:\n",
1824                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1825                       "</div>" .
1826                       $cgi->end_form() . "\n";
1827         }
1828         print "</div>\n";
1829 }
1830
1831 sub git_footer_html {
1832         print "<div class=\"page_footer\">\n";
1833         if (defined $project) {
1834                 my $descr = git_get_project_description($project);
1835                 if (defined $descr) {
1836                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1837                 }
1838                 print $cgi->a({-href => href(action=>"rss"),
1839                               -class => "rss_logo"}, "RSS") . " ";
1840                 print $cgi->a({-href => href(action=>"atom"),
1841                               -class => "rss_logo"}, "Atom") . "\n";
1842         } else {
1843                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1844                               -class => "rss_logo"}, "OPML") . " ";
1845                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1846                               -class => "rss_logo"}, "TXT") . "\n";
1847         }
1848         print "</div>\n" ;
1849
1850         if (-f $site_footer) {
1851                 open (my $fd, $site_footer);
1852                 print <$fd>;
1853                 close $fd;
1854         }
1855
1856         print "</body>\n" .
1857               "</html>";
1858 }
1859
1860 sub die_error {
1861         my $status = shift || "403 Forbidden";
1862         my $error = shift || "Malformed query, file missing or permission denied";
1863
1864         git_header_html($status);
1865         print <<EOF;
1866 <div class="page_body">
1867 <br /><br />
1868 $status - $error
1869 <br />
1870 </div>
1871 EOF
1872         git_footer_html();
1873         exit;
1874 }
1875
1876 ## ----------------------------------------------------------------------
1877 ## functions printing or outputting HTML: navigation
1878
1879 sub git_print_page_nav {
1880         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1881         $extra = '' if !defined $extra; # pager or formats
1882
1883         my @navs = qw(summary shortlog log commit commitdiff tree);
1884         if ($suppress) {
1885                 @navs = grep { $_ ne $suppress } @navs;
1886         }
1887
1888         my %arg = map { $_ => {action=>$_} } @navs;
1889         if (defined $head) {
1890                 for (qw(commit commitdiff)) {
1891                         $arg{$_}{hash} = $head;
1892                 }
1893                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1894                         for (qw(shortlog log)) {
1895                                 $arg{$_}{hash} = $head;
1896                         }
1897                 }
1898         }
1899         $arg{tree}{hash} = $treehead if defined $treehead;
1900         $arg{tree}{hash_base} = $treebase if defined $treebase;
1901
1902         print "<div class=\"page_nav\">\n" .
1903                 (join " | ",
1904                  map { $_ eq $current ?
1905                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1906                  } @navs);
1907         print "<br/>\n$extra<br/>\n" .
1908               "</div>\n";
1909 }
1910
1911 sub format_paging_nav {
1912         my ($action, $hash, $head, $page, $nrevs) = @_;
1913         my $paging_nav;
1914
1915
1916         if ($hash ne $head || $page) {
1917                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1918         } else {
1919                 $paging_nav .= "HEAD";
1920         }
1921
1922         if ($page > 0) {
1923                 $paging_nav .= " &sdot; " .
1924                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1925                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1926         } else {
1927                 $paging_nav .= " &sdot; prev";
1928         }
1929
1930         if ($nrevs >= (100 * ($page+1)-1)) {
1931                 $paging_nav .= " &sdot; " .
1932                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1933                                  -accesskey => "n", -title => "Alt-n"}, "next");
1934         } else {
1935                 $paging_nav .= " &sdot; next";
1936         }
1937
1938         return $paging_nav;
1939 }
1940
1941 ## ......................................................................
1942 ## functions printing or outputting HTML: div
1943
1944 sub git_print_header_div {
1945         my ($action, $title, $hash, $hash_base) = @_;
1946         my %args = ();
1947
1948         $args{action} = $action;
1949         $args{hash} = $hash if $hash;
1950         $args{hash_base} = $hash_base if $hash_base;
1951
1952         print "<div class=\"header\">\n" .
1953               $cgi->a({-href => href(%args), -class => "title"},
1954               $title ? $title : $action) .
1955               "\n</div>\n";
1956 }
1957
1958 #sub git_print_authorship (\%) {
1959 sub git_print_authorship {
1960         my $co = shift;
1961
1962         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1963         print "<div class=\"author_date\">" .
1964               esc_html($co->{'author_name'}) .
1965               " [$ad{'rfc2822'}";
1966         if ($ad{'hour_local'} < 6) {
1967                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1968                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1969         } else {
1970                 printf(" (%02d:%02d %s)",
1971                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1972         }
1973         print "]</div>\n";
1974 }
1975
1976 sub git_print_page_path {
1977         my $name = shift;
1978         my $type = shift;
1979         my $hb = shift;
1980
1981
1982         print "<div class=\"page_path\">";
1983         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1984                       -title => 'tree root'}, "[$project]");
1985         print " / ";
1986         if (defined $name) {
1987                 my @dirname = split '/', $name;
1988                 my $basename = pop @dirname;
1989                 my $fullname = '';
1990
1991                 foreach my $dir (@dirname) {
1992                         $fullname .= ($fullname ? '/' : '') . $dir;
1993                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1994                                                      hash_base=>$hb),
1995                                       -title => esc_html($fullname)}, esc_path($dir));
1996                         print " / ";
1997                 }
1998                 if (defined $type && $type eq 'blob') {
1999                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2000                                                      hash_base=>$hb),
2001                                       -title => esc_html($name)}, esc_path($basename));
2002                 } elsif (defined $type && $type eq 'tree') {
2003                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2004                                                      hash_base=>$hb),
2005                                       -title => esc_html($name)}, esc_path($basename));
2006                         print " / ";
2007                 } else {
2008                         print esc_path($basename);
2009                 }
2010         }
2011         print "<br/></div>\n";
2012 }
2013
2014 # sub git_print_log (\@;%) {
2015 sub git_print_log ($;%) {
2016         my $log = shift;
2017         my %opts = @_;
2018
2019         if ($opts{'-remove_title'}) {
2020                 # remove title, i.e. first line of log
2021                 shift @$log;
2022         }
2023         # remove leading empty lines
2024         while (defined $log->[0] && $log->[0] eq "") {
2025                 shift @$log;
2026         }
2027
2028         # print log
2029         my $signoff = 0;
2030         my $empty = 0;
2031         foreach my $line (@$log) {
2032                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2033                         $signoff = 1;
2034                         $empty = 0;
2035                         if (! $opts{'-remove_signoff'}) {
2036                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2037                                 next;
2038                         } else {
2039                                 # remove signoff lines
2040                                 next;
2041                         }
2042                 } else {
2043                         $signoff = 0;
2044                 }
2045
2046                 # print only one empty line
2047                 # do not print empty line after signoff
2048                 if ($line eq "") {
2049                         next if ($empty || $signoff);
2050                         $empty = 1;
2051                 } else {
2052                         $empty = 0;
2053                 }
2054
2055                 print format_log_line_html($line) . "<br/>\n";
2056         }
2057
2058         if ($opts{'-final_empty_line'}) {
2059                 # end with single empty line
2060                 print "<br/>\n" unless $empty;
2061         }
2062 }
2063
2064 # return link target (what link points to)
2065 sub git_get_link_target {
2066         my $hash = shift;
2067         my $link_target;
2068
2069         # read link
2070         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2071                 or return;
2072         {
2073                 local $/;
2074                 $link_target = <$fd>;
2075         }
2076         close $fd
2077                 or return;
2078
2079         return $link_target;
2080 }
2081
2082 # given link target, and the directory (basedir) the link is in,
2083 # return target of link relative to top directory (top tree);
2084 # return undef if it is not possible (including absolute links).
2085 sub normalize_link_target {
2086         my ($link_target, $basedir, $hash_base) = @_;
2087
2088         # we can normalize symlink target only if $hash_base is provided
2089         return unless $hash_base;
2090
2091         # absolute symlinks (beginning with '/') cannot be normalized
2092         return if (substr($link_target, 0, 1) eq '/');
2093
2094         # normalize link target to path from top (root) tree (dir)
2095         my $path;
2096         if ($basedir) {
2097                 $path = $basedir . '/' . $link_target;
2098         } else {
2099                 # we are in top (root) tree (dir)
2100                 $path = $link_target;
2101         }
2102
2103         # remove //, /./, and /../
2104         my @path_parts;
2105         foreach my $part (split('/', $path)) {
2106                 # discard '.' and ''
2107                 next if (!$part || $part eq '.');
2108                 # handle '..'
2109                 if ($part eq '..') {
2110                         if (@path_parts) {
2111                                 pop @path_parts;
2112                         } else {
2113                                 # link leads outside repository (outside top dir)
2114                                 return;
2115                         }
2116                 } else {
2117                         push @path_parts, $part;
2118                 }
2119         }
2120         $path = join('/', @path_parts);
2121
2122         return $path;
2123 }
2124
2125 # print tree entry (row of git_tree), but without encompassing <tr> element
2126 sub git_print_tree_entry {
2127         my ($t, $basedir, $hash_base, $have_blame) = @_;
2128
2129         my %base_key = ();
2130         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2131
2132         # The format of a table row is: mode list link.  Where mode is
2133         # the mode of the entry, list is the name of the entry, an href,
2134         # and link is the action links of the entry.
2135
2136         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2137         if ($t->{'type'} eq "blob") {
2138                 print "<td class=\"list\">" .
2139                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2140                                                file_name=>"$basedir$t->{'name'}", %base_key),
2141                                 -class => "list"}, esc_path($t->{'name'}));
2142                 if (S_ISLNK(oct $t->{'mode'})) {
2143                         my $link_target = git_get_link_target($t->{'hash'});
2144                         if ($link_target) {
2145                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2146                                 if (defined $norm_target) {
2147                                         print " -> " .
2148                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2149                                                                      file_name=>$norm_target),
2150                                                        -title => $norm_target}, esc_path($link_target));
2151                                 } else {
2152                                         print " -> " . esc_path($link_target);
2153                                 }
2154                         }
2155                 }
2156                 print "</td>\n";
2157                 print "<td class=\"link\">";
2158                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2159                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2160                               "blob");
2161                 if ($have_blame) {
2162                         print " | " .
2163                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2164                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2165                                       "blame");
2166                 }
2167                 if (defined $hash_base) {
2168                         print " | " .
2169                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2170                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2171                                       "history");
2172                 }
2173                 print " | " .
2174                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2175                                                file_name=>"$basedir$t->{'name'}")},
2176                                 "raw");
2177                 print "</td>\n";
2178
2179         } elsif ($t->{'type'} eq "tree") {
2180                 print "<td class=\"list\">";
2181                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2182                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2183                               esc_path($t->{'name'}));
2184                 print "</td>\n";
2185                 print "<td class=\"link\">";
2186                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2187                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2188                               "tree");
2189                 if (defined $hash_base) {
2190                         print " | " .
2191                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2192                                                      file_name=>"$basedir$t->{'name'}")},
2193                                       "history");
2194                 }
2195                 print "</td>\n";
2196         }
2197 }
2198
2199 ## ......................................................................
2200 ## functions printing large fragments of HTML
2201
2202 sub git_difftree_body {
2203         my ($difftree, $hash, $parent) = @_;
2204         my ($have_blame) = gitweb_check_feature('blame');
2205         print "<div class=\"list_head\">\n";
2206         if ($#{$difftree} > 10) {
2207                 print(($#{$difftree} + 1) . " files changed:\n");
2208         }
2209         print "</div>\n";
2210
2211         print "<table class=\"diff_tree\">\n";
2212         my $alternate = 1;
2213         my $patchno = 0;
2214         foreach my $line (@{$difftree}) {
2215                 my %diff = parse_difftree_raw_line($line);
2216
2217                 if ($alternate) {
2218                         print "<tr class=\"dark\">\n";
2219                 } else {
2220                         print "<tr class=\"light\">\n";
2221                 }
2222                 $alternate ^= 1;
2223
2224                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2225                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2226                 if ($diff{'to_mode'} ne ('0' x 6)) {
2227                         $to_mode_oct = oct $diff{'to_mode'};
2228                         if (S_ISREG($to_mode_oct)) { # only for regular file
2229                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2230                         }
2231                         $to_file_type = file_type($diff{'to_mode'});
2232                 }
2233                 if ($diff{'from_mode'} ne ('0' x 6)) {
2234                         $from_mode_oct = oct $diff{'from_mode'};
2235                         if (S_ISREG($to_mode_oct)) { # only for regular file
2236                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2237                         }
2238                         $from_file_type = file_type($diff{'from_mode'});
2239                 }
2240
2241                 if ($diff{'status'} eq "A") { # created
2242                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2243                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2244                         $mode_chng   .= "]</span>";
2245                         print "<td>";
2246                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2247                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2248                                       -class => "list"}, esc_path($diff{'file'}));
2249                         print "</td>\n";
2250                         print "<td>$mode_chng</td>\n";
2251                         print "<td class=\"link\">";
2252                         if ($action eq 'commitdiff') {
2253                                 # link to patch
2254                                 $patchno++;
2255                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2256                                 print " | ";
2257                         }
2258                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2259                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2260                                       "blob") . " | ";
2261                         print "</td>\n";
2262
2263                 } elsif ($diff{'status'} eq "D") { # deleted
2264                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2265                         print "<td>";
2266                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2267                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2268                                        -class => "list"}, esc_path($diff{'file'}));
2269                         print "</td>\n";
2270                         print "<td>$mode_chng</td>\n";
2271                         print "<td class=\"link\">";
2272                         if ($action eq 'commitdiff') {
2273                                 # link to patch
2274                                 $patchno++;
2275                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2276                                 print " | ";
2277                         }
2278                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2279                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2280                                       "blob") . " | ";
2281                         if ($have_blame) {
2282                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2283                                                              file_name=>$diff{'file'})},
2284                                               "blame") . " | ";
2285                         }
2286                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2287                                                      file_name=>$diff{'file'})},
2288                                       "history");
2289                         print "</td>\n";
2290
2291                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2292                         my $mode_chnge = "";
2293                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2294                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2295                                 if ($from_file_type != $to_file_type) {
2296                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2297                                 }
2298                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2299                                         if ($from_mode_str && $to_mode_str) {
2300                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2301                                         } elsif ($to_mode_str) {
2302                                                 $mode_chnge .= " mode: $to_mode_str";
2303                                         }
2304                                 }
2305                                 $mode_chnge .= "]</span>\n";
2306                         }
2307                         print "<td>";
2308                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2309                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2310                                       -class => "list"}, esc_path($diff{'file'}));
2311                         print "</td>\n";
2312                         print "<td>$mode_chnge</td>\n";
2313                         print "<td class=\"link\">";
2314                         if ($action eq 'commitdiff') {
2315                                 # link to patch
2316                                 $patchno++;
2317                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2318                                       " | ";
2319                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2320                                 # "commit" view and modified file (not onlu mode changed)
2321                                 print $cgi->a({-href => href(action=>"blobdiff",
2322                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2323                                                              hash_base=>$hash, hash_parent_base=>$parent,
2324                                                              file_name=>$diff{'file'})},
2325                                               "diff") .
2326                                       " | ";
2327                         }
2328                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2329                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2330                                        "blob") . " | ";
2331                         if ($have_blame) {
2332                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2333                                                              file_name=>$diff{'file'})},
2334                                               "blame") . " | ";
2335                         }
2336                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2337                                                      file_name=>$diff{'file'})},
2338                                       "history");
2339                         print "</td>\n";
2340
2341                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2342                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2343                         my $nstatus = $status_name{$diff{'status'}};
2344                         my $mode_chng = "";
2345                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2346                                 # mode also for directories, so we cannot use $to_mode_str
2347                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2348                         }
2349                         print "<td>" .
2350                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2351                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2352                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2353                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2354                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2355                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2356                                       -class => "list"}, esc_path($diff{'from_file'})) .
2357                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2358                               "<td class=\"link\">";
2359                         if ($action eq 'commitdiff') {
2360                                 # link to patch
2361                                 $patchno++;
2362                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2363                                       " | ";
2364                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2365                                 # "commit" view and modified file (not only pure rename or copy)
2366                                 print $cgi->a({-href => href(action=>"blobdiff",
2367                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2368                                                              hash_base=>$hash, hash_parent_base=>$parent,
2369                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2370                                               "diff") .
2371                                       " | ";
2372                         }
2373                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2374                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2375                                       "blob") . " | ";
2376                         if ($have_blame) {
2377                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2378                                                              file_name=>$diff{'to_file'})},
2379                                               "blame") . " | ";
2380                         }
2381                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2382                                                     file_name=>$diff{'to_file'})},
2383                                       "history");
2384                         print "</td>\n";
2385
2386                 } # we should not encounter Unmerged (U) or Unknown (X) status
2387                 print "</tr>\n";
2388         }
2389         print "</table>\n";
2390 }
2391
2392 sub git_patchset_body {
2393         my ($fd, $difftree, $hash, $hash_parent) = @_;
2394
2395         my $patch_idx = 0;
2396         my $patch_line;
2397         my $diffinfo;
2398         my (%from, %to);
2399         my ($from_id, $to_id);
2400
2401         print "<div class=\"patchset\">\n";
2402
2403         # skip to first patch
2404         while ($patch_line = <$fd>) {
2405                 chomp $patch_line;
2406
2407                 last if ($patch_line =~ m/^diff /);
2408         }
2409
2410  PATCH:
2411         while ($patch_line) {
2412                 my @diff_header;
2413
2414                 # git diff header
2415                 #assert($patch_line =~ m/^diff /) if DEBUG;
2416                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2417                 push @diff_header, $patch_line;
2418
2419                 # extended diff header
2420         EXTENDED_HEADER:
2421                 while ($patch_line = <$fd>) {
2422                         chomp $patch_line;
2423
2424                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2425
2426                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2427                                 $from_id = $1;
2428                                 $to_id   = $2;
2429                         }
2430
2431                         push @diff_header, $patch_line;
2432                 }
2433                 #last PATCH unless $patch_line;
2434                 my $last_patch_line = $patch_line;
2435
2436                 # check if current patch belong to current raw line
2437                 # and parse raw git-diff line if needed
2438                 if (defined $diffinfo &&
2439                     $diffinfo->{'from_id'} eq $from_id &&
2440                     $diffinfo->{'to_id'}   eq $to_id) {
2441                         # this is split patch
2442                         print "<div class=\"patch cont\">\n";
2443                 } else {
2444                         # advance raw git-diff output if needed
2445                         $patch_idx++ if defined $diffinfo;
2446
2447                         # read and prepare patch information
2448                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2449                                 # pre-parsed (or generated by hand)
2450                                 $diffinfo = $difftree->[$patch_idx];
2451                         } else {
2452                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2453                         }
2454                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2455                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2456                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2457                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2458                                                      hash=>$diffinfo->{'from_id'},
2459                                                      file_name=>$from{'file'});
2460                         }
2461                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2462                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2463                                                    hash=>$diffinfo->{'to_id'},
2464                                                    file_name=>$to{'file'});
2465                         }
2466                         # this is first patch for raw difftree line with $patch_idx index
2467                         # we index @$difftree array from 0, but number patches from 1
2468                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2469                 }
2470
2471                 # print "git diff" header
2472                 $patch_line = shift @diff_header;
2473                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2474                 if ($from{'href'}) {
2475                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2476                                                'a/' . esc_path($from{'file'}));
2477                 } else { # file was added
2478                         $patch_line .= 'a/' . esc_path($from{'file'});
2479                 }
2480                 $patch_line .= ' ';
2481                 if ($to{'href'}) {
2482                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2483                                                'b/' . esc_path($to{'file'}));
2484                 } else { # file was deleted
2485                         $patch_line .= 'b/' . esc_path($to{'file'});
2486                 }
2487                 print "<div class=\"diff header\">$patch_line</div>\n";
2488
2489                 # print extended diff header
2490                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2491         EXTENDED_HEADER:
2492                 foreach $patch_line (@diff_header) {
2493                         # match <path>
2494                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2495                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2496                                                         esc_path($from{'file'}));
2497                         }
2498                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2499                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2500                                                       esc_path($to{'file'}));
2501                         }
2502                         # match <mode>
2503                         if ($patch_line =~ m/\s(\d{6})$/) {
2504                                 $patch_line .= '<span class="info"> (' .
2505                                                file_type_long($1) .
2506                                                ')</span>';
2507                         }
2508                         # match <hash>
2509                         if ($patch_line =~ m/^index/) {
2510                                 my ($from_link, $to_link);
2511                                 if ($from{'href'}) {
2512                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2513                                                              substr($diffinfo->{'from_id'},0,7));
2514                                 } else {
2515                                         $from_link = '0' x 7;
2516                                 }
2517                                 if ($to{'href'}) {
2518                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2519                                                            substr($diffinfo->{'to_id'},0,7));
2520                                 } else {
2521                                         $to_link = '0' x 7;
2522                                 }
2523                                 #affirm {
2524                                 #       my ($from_hash, $to_hash) =
2525                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2526                                 #       my ($from_id, $to_id) =
2527                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2528                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2529                                 #} if DEBUG;
2530                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2531                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2532                         }
2533                         print $patch_line . "<br/>\n";
2534                 }
2535                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2536
2537                 # from-file/to-file diff header
2538                 $patch_line = $last_patch_line;
2539                 #assert($patch_line =~ m/^---/) if DEBUG;
2540                 if ($from{'href'}) {
2541                         $patch_line = '--- a/' .
2542                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2543                                               esc_path($from{'file'}));
2544                 }
2545                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2546
2547                 $patch_line = <$fd>;
2548                 #last PATCH unless $patch_line;
2549                 chomp $patch_line;
2550
2551                 #assert($patch_line =~ m/^+++/) if DEBUG;
2552                 if ($to{'href'}) {
2553                         $patch_line = '+++ b/' .
2554                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2555                                               esc_path($to{'file'}));
2556                 }
2557                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2558
2559                 # the patch itself
2560         LINE:
2561                 while ($patch_line = <$fd>) {
2562                         chomp $patch_line;
2563
2564                         next PATCH if ($patch_line =~ m/^diff /);
2565
2566                         print format_diff_line($patch_line, \%from, \%to);
2567                 }
2568
2569         } continue {
2570                 print "</div>\n"; # class="patch"
2571         }
2572
2573         print "</div>\n"; # class="patchset"
2574 }
2575
2576 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2577
2578 sub git_project_list_body {
2579         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2580
2581         my ($check_forks) = gitweb_check_feature('forks');
2582
2583         my @projects;
2584         foreach my $pr (@$projlist) {
2585                 my (@aa) = git_get_last_activity($pr->{'path'});
2586                 unless (@aa) {
2587                         next;
2588                 }
2589                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2590                 if (!defined $pr->{'descr'}) {
2591                         my $descr = git_get_project_description($pr->{'path'}) || "";
2592                         $pr->{'descr_long'} = to_utf8($descr);
2593                         $pr->{'descr'} = chop_str($descr, 25, 5);
2594                 }
2595                 if (!defined $pr->{'owner'}) {
2596                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2597                 }
2598                 if ($check_forks) {
2599                         my $pname = $pr->{'path'};
2600                         if (($pname =~ s/\.git$//) &&
2601                             ($pname !~ /\/$/) &&
2602                             (-d "$projectroot/$pname")) {
2603                                 $pr->{'forks'} = "-d $projectroot/$pname";
2604                         }
2605                         else {
2606                                 $pr->{'forks'} = 0;
2607                         }
2608                 }
2609                 push @projects, $pr;
2610         }
2611
2612         $order ||= "project";
2613         $from = 0 unless defined $from;
2614         $to = $#projects if (!defined $to || $#projects < $to);
2615
2616         print "<table class=\"project_list\">\n";
2617         unless ($no_header) {
2618                 print "<tr>\n";
2619                 if ($check_forks) {
2620                         print "<th></th>\n";
2621                 }
2622                 if ($order eq "project") {
2623                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2624                         print "<th>Project</th>\n";
2625                 } else {
2626                         print "<th>" .
2627                               $cgi->a({-href => href(project=>undef, order=>'project'),
2628                                        -class => "header"}, "Project") .
2629                               "</th>\n";
2630                 }
2631                 if ($order eq "descr") {
2632                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2633                         print "<th>Description</th>\n";
2634                 } else {
2635                         print "<th>" .
2636                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2637                                        -class => "header"}, "Description") .
2638                               "</th>\n";
2639                 }
2640                 if ($order eq "owner") {
2641                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2642                         print "<th>Owner</th>\n";
2643                 } else {
2644                         print "<th>" .
2645                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2646                                        -class => "header"}, "Owner") .
2647                               "</th>\n";
2648                 }
2649                 if ($order eq "age") {
2650                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2651                         print "<th>Last Change</th>\n";
2652                 } else {
2653                         print "<th>" .
2654                               $cgi->a({-href => href(project=>undef, order=>'age'),
2655                                        -class => "header"}, "Last Change") .
2656                               "</th>\n";
2657                 }
2658                 print "<th></th>\n" .
2659                       "</tr>\n";
2660         }
2661         my $alternate = 1;
2662         for (my $i = $from; $i <= $to; $i++) {
2663                 my $pr = $projects[$i];
2664                 if ($alternate) {
2665                         print "<tr class=\"dark\">\n";
2666                 } else {
2667                         print "<tr class=\"light\">\n";
2668                 }
2669                 $alternate ^= 1;
2670                 if ($check_forks) {
2671                         print "<td>";
2672                         if ($pr->{'forks'}) {
2673                                 print "<!-- $pr->{'forks'} -->\n";
2674                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2675                         }
2676                         print "</td>\n";
2677                 }
2678                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2679                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2680                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2681                                         -class => "list", -title => $pr->{'descr_long'}},
2682                                         esc_html($pr->{'descr'})) . "</td>\n" .
2683                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2684                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2685                       $pr->{'age_string'} . "</td>\n" .
2686                       "<td class=\"link\">" .
2687                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2688                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2689                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2690                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2691                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2692                       "</td>\n" .
2693                       "</tr>\n";
2694         }
2695         if (defined $extra) {
2696                 print "<tr>\n";
2697                 if ($check_forks) {
2698                         print "<td></td>\n";
2699                 }
2700                 print "<td colspan=\"5\">$extra</td>\n" .
2701                       "</tr>\n";
2702         }
2703         print "</table>\n";
2704 }
2705
2706 sub git_shortlog_body {
2707         # uses global variable $project
2708         my ($commitlist, $from, $to, $refs, $extra) = @_;
2709
2710         my $have_snapshot = gitweb_have_snapshot();
2711
2712         $from = 0 unless defined $from;
2713         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2714
2715         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2716         my $alternate = 1;
2717         for (my $i = $from; $i <= $to; $i++) {
2718                 my %co = %{$commitlist->[$i]};
2719                 my $commit = $co{'id'};
2720                 my $ref = format_ref_marker($refs, $commit);
2721                 if ($alternate) {
2722                         print "<tr class=\"dark\">\n";
2723                 } else {
2724                         print "<tr class=\"light\">\n";
2725                 }
2726                 $alternate ^= 1;
2727                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2728                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2729                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2730                       "<td>";
2731                 print format_subject_html($co{'title'}, $co{'title_short'},
2732                                           href(action=>"commit", hash=>$commit), $ref);
2733                 print "</td>\n" .
2734                       "<td class=\"link\">" .
2735                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2736                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2737                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2738                 if ($have_snapshot) {
2739                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2740                 }
2741                 print "</td>\n" .
2742                       "</tr>\n";
2743         }
2744         if (defined $extra) {
2745                 print "<tr>\n" .
2746                       "<td colspan=\"4\">$extra</td>\n" .
2747                       "</tr>\n";
2748         }
2749         print "</table>\n";
2750 }
2751
2752 sub git_history_body {
2753         # Warning: assumes constant type (blob or tree) during history
2754         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2755
2756         $from = 0 unless defined $from;
2757         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2758
2759         print "<table class=\"history\" cellspacing=\"0\">\n";
2760         my $alternate = 1;
2761         for (my $i = $from; $i <= $to; $i++) {
2762                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2763                         next;
2764                 }
2765
2766                 my $commit = $1;
2767                 my %co = parse_commit($commit);
2768                 if (!%co) {
2769                         next;
2770                 }
2771
2772                 my $ref = format_ref_marker($refs, $commit);
2773
2774                 if ($alternate) {
2775                         print "<tr class=\"dark\">\n";
2776                 } else {
2777                         print "<tr class=\"light\">\n";
2778                 }
2779                 $alternate ^= 1;
2780                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2781                       # shortlog uses      chop_str($co{'author_name'}, 10)
2782                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2783                       "<td>";
2784                 # originally git_history used chop_str($co{'title'}, 50)
2785                 print format_subject_html($co{'title'}, $co{'title_short'},
2786                                           href(action=>"commit", hash=>$commit), $ref);
2787                 print "</td>\n" .
2788                       "<td class=\"link\">" .
2789                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2790                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2791
2792                 if ($ftype eq 'blob') {
2793                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2794                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2795                         if (defined $blob_current && defined $blob_parent &&
2796                                         $blob_current ne $blob_parent) {
2797                                 print " | " .
2798                                         $cgi->a({-href => href(action=>"blobdiff",
2799                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2800                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2801                                                                file_name=>$file_name)},
2802                                                 "diff to current");
2803                         }
2804                 }
2805                 print "</td>\n" .
2806                       "</tr>\n";
2807         }
2808         if (defined $extra) {
2809                 print "<tr>\n" .
2810                       "<td colspan=\"4\">$extra</td>\n" .
2811                       "</tr>\n";
2812         }
2813         print "</table>\n";
2814 }
2815
2816 sub git_tags_body {
2817         # uses global variable $project
2818         my ($taglist, $from, $to, $extra) = @_;
2819         $from = 0 unless defined $from;
2820         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2821
2822         print "<table class=\"tags\" cellspacing=\"0\">\n";
2823         my $alternate = 1;
2824         for (my $i = $from; $i <= $to; $i++) {
2825                 my $entry = $taglist->[$i];
2826                 my %tag = %$entry;
2827                 my $comment = $tag{'subject'};
2828                 my $comment_short;
2829                 if (defined $comment) {
2830                         $comment_short = chop_str($comment, 30, 5);
2831                 }
2832                 if ($alternate) {
2833                         print "<tr class=\"dark\">\n";
2834                 } else {
2835                         print "<tr class=\"light\">\n";
2836                 }
2837                 $alternate ^= 1;
2838                 print "<td><i>$tag{'age'}</i></td>\n" .
2839                       "<td>" .
2840                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2841                                -class => "list name"}, esc_html($tag{'name'})) .
2842                       "</td>\n" .
2843                       "<td>";
2844                 if (defined $comment) {
2845                         print format_subject_html($comment, $comment_short,
2846                                                   href(action=>"tag", hash=>$tag{'id'}));
2847                 }
2848                 print "</td>\n" .
2849                       "<td class=\"selflink\">";
2850                 if ($tag{'type'} eq "tag") {
2851                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2852                 } else {
2853                         print "&nbsp;";
2854                 }
2855                 print "</td>\n" .
2856                       "<td class=\"link\">" . " | " .
2857                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2858                 if ($tag{'reftype'} eq "commit") {
2859                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2860                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2861                 } elsif ($tag{'reftype'} eq "blob") {
2862                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2863                 }
2864                 print "</td>\n" .
2865                       "</tr>";
2866         }
2867         if (defined $extra) {
2868                 print "<tr>\n" .
2869                       "<td colspan=\"5\">$extra</td>\n" .
2870                       "</tr>\n";
2871         }
2872         print "</table>\n";
2873 }
2874
2875 sub git_heads_body {
2876         # uses global variable $project
2877         my ($headlist, $head, $from, $to, $extra) = @_;
2878         $from = 0 unless defined $from;
2879         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2880
2881         print "<table class=\"heads\" cellspacing=\"0\">\n";
2882         my $alternate = 1;
2883         for (my $i = $from; $i <= $to; $i++) {
2884                 my $entry = $headlist->[$i];
2885                 my %ref = %$entry;
2886                 my $curr = $ref{'id'} eq $head;
2887                 if ($alternate) {
2888                         print "<tr class=\"dark\">\n";
2889                 } else {
2890                         print "<tr class=\"light\">\n";
2891                 }
2892                 $alternate ^= 1;
2893                 print "<td><i>$ref{'age'}</i></td>\n" .
2894                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2895                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2896                                -class => "list name"},esc_html($ref{'name'})) .
2897                       "</td>\n" .
2898                       "<td class=\"link\">" .
2899                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2900                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2901                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2902                       "</td>\n" .
2903                       "</tr>";
2904         }
2905         if (defined $extra) {
2906                 print "<tr>\n" .
2907                       "<td colspan=\"3\">$extra</td>\n" .
2908                       "</tr>\n";
2909         }
2910         print "</table>\n";
2911 }
2912
2913 sub git_search_grep_body {
2914         my ($commitlist, $from, $to, $extra) = @_;
2915         $from = 0 unless defined $from;
2916         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2917
2918         print "<table class=\"grep\" cellspacing=\"0\">\n";
2919         my $alternate = 1;
2920         for (my $i = $from; $i <= $to; $i++) {
2921                 my %co = %{$commitlist->[$i]};
2922                 if (!%co) {
2923                         next;
2924                 }
2925                 my $commit = $co{'id'};
2926                 if ($alternate) {
2927                         print "<tr class=\"dark\">\n";
2928                 } else {
2929                         print "<tr class=\"light\">\n";
2930                 }
2931                 $alternate ^= 1;
2932                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2933                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2934                       "<td>" .
2935                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2936                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2937                 my $comment = $co{'comment'};
2938                 foreach my $line (@$comment) {
2939                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2940                                 my $lead = esc_html($1) || "";
2941                                 $lead = chop_str($lead, 30, 10);
2942                                 my $match = esc_html($2) || "";
2943                                 my $trail = esc_html($3) || "";
2944                                 $trail = chop_str($trail, 30, 10);
2945                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2946                                 print chop_str($text, 80, 5) . "<br/>\n";
2947                         }
2948                 }
2949                 print "</td>\n" .
2950                       "<td class=\"link\">" .
2951                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2952                       " | " .
2953                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2954                 print "</td>\n" .
2955                       "</tr>\n";
2956         }
2957         if (defined $extra) {
2958                 print "<tr>\n" .
2959                       "<td colspan=\"3\">$extra</td>\n" .
2960                       "</tr>\n";
2961         }
2962         print "</table>\n";
2963 }
2964
2965 ## ======================================================================
2966 ## ======================================================================
2967 ## actions
2968
2969 sub git_project_list {
2970         my $order = $cgi->param('o');
2971         if (defined $order && $order !~ m/project|descr|owner|age/) {
2972                 die_error(undef, "Unknown order parameter");
2973         }
2974
2975         my @list = git_get_projects_list();
2976         if (!@list) {
2977                 die_error(undef, "No projects found");
2978         }
2979
2980         git_header_html();
2981         if (-f $home_text) {
2982                 print "<div class=\"index_include\">\n";
2983                 open (my $fd, $home_text);
2984                 print <$fd>;
2985                 close $fd;
2986                 print "</div>\n";
2987         }
2988         git_project_list_body(\@list, $order);
2989         git_footer_html();
2990 }
2991
2992 sub git_forks {
2993         my $order = $cgi->param('o');
2994         if (defined $order && $order !~ m/project|descr|owner|age/) {
2995                 die_error(undef, "Unknown order parameter");
2996         }
2997
2998         my @list = git_get_projects_list($project);
2999         if (!@list) {
3000                 die_error(undef, "No forks found");
3001         }
3002
3003         git_header_html();
3004         git_print_page_nav('','');
3005         git_print_header_div('summary', "$project forks");
3006         git_project_list_body(\@list, $order);
3007         git_footer_html();
3008 }
3009
3010 sub git_project_index {
3011         my @projects = git_get_projects_list($project);
3012
3013         print $cgi->header(
3014                 -type => 'text/plain',
3015                 -charset => 'utf-8',
3016                 -content_disposition => 'inline; filename="index.aux"');
3017
3018         foreach my $pr (@projects) {
3019                 if (!exists $pr->{'owner'}) {
3020                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
3021                 }
3022
3023                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3024                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3025                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3026                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3027                 $path  =~ s/ /\+/g;
3028                 $owner =~ s/ /\+/g;
3029
3030                 print "$path $owner\n";
3031         }
3032 }
3033
3034 sub git_summary {
3035         my $descr = git_get_project_description($project) || "none";
3036         my %co = parse_commit("HEAD");
3037         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3038         my $head = $co{'id'};
3039
3040         my $owner = git_get_project_owner($project);
3041
3042         my $refs = git_get_references();
3043         # These get_*_list functions return one more to allow us to see if
3044         # there are more ...
3045         my @taglist  = git_get_tags_list(16);
3046         my @headlist = git_get_heads_list(16);
3047         my @forklist;
3048         my ($check_forks) = gitweb_check_feature('forks');
3049
3050         if ($check_forks) {
3051                 @forklist = git_get_projects_list($project);
3052         }
3053
3054         git_header_html();
3055         git_print_page_nav('summary','', $head);
3056
3057         print "<div class=\"title\">&nbsp;</div>\n";
3058         print "<table cellspacing=\"0\">\n" .
3059               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3060               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3061               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3062         # use per project git URL list in $projectroot/$project/cloneurl
3063         # or make project git URL from git base URL and project name
3064         my $url_tag = "URL";
3065         my @url_list = git_get_project_url_list($project);
3066         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3067         foreach my $git_url (@url_list) {
3068                 next unless $git_url;
3069                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3070                 $url_tag = "";
3071         }
3072         print "</table>\n";
3073
3074         if (-s "$projectroot/$project/README.html") {
3075                 if (open my $fd, "$projectroot/$project/README.html") {
3076                         print "<div class=\"title\">readme</div>\n";
3077                         print $_ while (<$fd>);
3078                         close $fd;
3079                 }
3080         }
3081
3082         # we need to request one more than 16 (0..15) to check if
3083         # those 16 are all
3084         my @commitlist = parse_commits($head, 17);
3085         git_print_header_div('shortlog');
3086         git_shortlog_body(\@commitlist, 0, 15, $refs,
3087                           $#commitlist <=  15 ? undef :
3088                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3089
3090         if (@taglist) {
3091                 git_print_header_div('tags');
3092                 git_tags_body(\@taglist, 0, 15,
3093                               $#taglist <=  15 ? undef :
3094                               $cgi->a({-href => href(action=>"tags")}, "..."));
3095         }
3096
3097         if (@headlist) {
3098                 git_print_header_div('heads');
3099                 git_heads_body(\@headlist, $head, 0, 15,
3100                                $#headlist <= 15 ? undef :
3101                                $cgi->a({-href => href(action=>"heads")}, "..."));
3102         }
3103
3104         if (@forklist) {
3105                 git_print_header_div('forks');
3106                 git_project_list_body(\@forklist, undef, 0, 15,
3107                                       $#forklist <= 15 ? undef :
3108                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3109                                       'noheader');
3110         }
3111
3112         git_footer_html();
3113 }
3114
3115 sub git_tag {
3116         my $head = git_get_head_hash($project);
3117         git_header_html();
3118         git_print_page_nav('','', $head,undef,$head);
3119         my %tag = parse_tag($hash);
3120         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3121         print "<div class=\"title_text\">\n" .
3122               "<table cellspacing=\"0\">\n" .
3123               "<tr>\n" .
3124               "<td>object</td>\n" .
3125               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3126                                $tag{'object'}) . "</td>\n" .
3127               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3128                                               $tag{'type'}) . "</td>\n" .
3129               "</tr>\n";
3130         if (defined($tag{'author'})) {
3131                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3132                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3133                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3134                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3135                         "</td></tr>\n";
3136         }
3137         print "</table>\n\n" .
3138               "</div>\n";
3139         print "<div class=\"page_body\">";
3140         my $comment = $tag{'comment'};
3141         foreach my $line (@$comment) {
3142                 chomp $line;
3143                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3144         }
3145         print "</div>\n";
3146         git_footer_html();
3147 }
3148
3149 sub git_blame2 {
3150         my $fd;
3151         my $ftype;
3152
3153         my ($have_blame) = gitweb_check_feature('blame');
3154         if (!$have_blame) {
3155                 die_error('403 Permission denied', "Permission denied");
3156         }
3157         die_error('404 Not Found', "File name not defined") if (!$file_name);
3158         $hash_base ||= git_get_head_hash($project);
3159         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3160         my %co = parse_commit($hash_base)
3161                 or die_error(undef, "Reading commit failed");
3162         if (!defined $hash) {
3163                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3164                         or die_error(undef, "Error looking up file");
3165         }
3166         $ftype = git_get_type($hash);
3167         if ($ftype !~ "blob") {
3168                 die_error("400 Bad Request", "Object is not a blob");
3169         }
3170         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3171               $file_name, $hash_base)
3172                 or die_error(undef, "Open git-blame failed");
3173         git_header_html();
3174         my $formats_nav =
3175                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3176                         "blob") .
3177                 " | " .
3178                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3179                         "history") .
3180                 " | " .
3181                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3182                         "HEAD");
3183         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3184         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3185         git_print_page_path($file_name, $ftype, $hash_base);
3186         my @rev_color = (qw(light2 dark2));
3187         my $num_colors = scalar(@rev_color);
3188         my $current_color = 0;
3189         my $last_rev;
3190         print <<HTML;
3191 <div class="page_body">
3192 <table class="blame">
3193 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3194 HTML
3195         my %metainfo = ();
3196         while (1) {
3197                 $_ = <$fd>;
3198                 last unless defined $_;
3199                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3200                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3201                 if (!exists $metainfo{$full_rev}) {
3202                         $metainfo{$full_rev} = {};
3203                 }
3204                 my $meta = $metainfo{$full_rev};
3205                 while (<$fd>) {
3206                         last if (s/^\t//);
3207                         if (/^(\S+) (.*)$/) {
3208                                 $meta->{$1} = $2;
3209                         }
3210                 }
3211                 my $data = $_;
3212                 chomp $data;
3213                 my $rev = substr($full_rev, 0, 8);
3214                 my $author = $meta->{'author'};
3215                 my %date = parse_date($meta->{'author-time'},
3216                                       $meta->{'author-tz'});
3217                 my $date = $date{'iso-tz'};
3218                 if ($group_size) {
3219                         $current_color = ++$current_color % $num_colors;
3220                 }
3221                 print "<tr class=\"$rev_color[$current_color]\">\n";
3222                 if ($group_size) {
3223                         print "<td class=\"sha1\"";
3224                         print " title=\"". esc_html($author) . ", $date\"";
3225                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3226                         print ">";
3227                         print $cgi->a({-href => href(action=>"commit",
3228                                                      hash=>$full_rev,
3229                                                      file_name=>$file_name)},
3230                                       esc_html($rev));
3231                         print "</td>\n";
3232                 }
3233                 my $blamed = href(action => 'blame',
3234                                   file_name => $meta->{'filename'},
3235                                   hash_base => $full_rev);
3236                 print "<td class=\"linenr\">";
3237                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3238                                 -id => "l$lineno",
3239                                 -class => "linenr" },
3240                               esc_html($lineno));
3241                 print "</td>";
3242                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3243                 print "</tr>\n";
3244         }
3245         print "</table>\n";
3246         print "</div>";
3247         close $fd
3248                 or print "Reading blob failed\n";
3249         git_footer_html();
3250 }
3251
3252 sub git_blame {
3253         my $fd;
3254
3255         my ($have_blame) = gitweb_check_feature('blame');
3256         if (!$have_blame) {
3257                 die_error('403 Permission denied', "Permission denied");
3258         }
3259         die_error('404 Not Found', "File name not defined") if (!$file_name);
3260         $hash_base ||= git_get_head_hash($project);
3261         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3262         my %co = parse_commit($hash_base)
3263                 or die_error(undef, "Reading commit failed");
3264         if (!defined $hash) {
3265                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3266                         or die_error(undef, "Error lookup file");
3267         }
3268         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3269                 or die_error(undef, "Open git-annotate failed");
3270         git_header_html();
3271         my $formats_nav =
3272                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3273                         "blob") .
3274                 " | " .
3275                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3276                         "history") .
3277                 " | " .
3278                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3279                         "HEAD");
3280         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3281         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3282         git_print_page_path($file_name, 'blob', $hash_base);
3283         print "<div class=\"page_body\">\n";
3284         print <<HTML;
3285 <table class="blame">
3286   <tr>
3287     <th>Commit</th>
3288     <th>Age</th>
3289     <th>Author</th>
3290     <th>Line</th>
3291     <th>Data</th>
3292   </tr>
3293 HTML
3294         my @line_class = (qw(light dark));
3295         my $line_class_len = scalar (@line_class);
3296         my $line_class_num = $#line_class;
3297         while (my $line = <$fd>) {
3298                 my $long_rev;
3299                 my $short_rev;
3300                 my $author;
3301                 my $time;
3302                 my $lineno;
3303                 my $data;
3304                 my $age;
3305                 my $age_str;
3306                 my $age_class;
3307
3308                 chomp $line;
3309                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3310
3311                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3312                         $long_rev = $1;
3313                         $author   = $2;
3314                         $time     = $3;
3315                         $lineno   = $4;
3316                         $data     = $5;
3317                 } else {
3318                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3319                         next;
3320                 }
3321                 $short_rev  = substr ($long_rev, 0, 8);
3322                 $age        = time () - $time;
3323                 $age_str    = age_string ($age);
3324                 $age_str    =~ s/ /&nbsp;/g;
3325                 $age_class  = age_class($age);
3326                 $author     = esc_html ($author);
3327                 $author     =~ s/ /&nbsp;/g;
3328
3329                 $data = untabify($data);
3330                 $data = esc_html ($data);
3331
3332                 print <<HTML;
3333   <tr class="$line_class[$line_class_num]">
3334     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3335     <td class="$age_class">$age_str</td>
3336     <td>$author</td>
3337     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3338     <td class="pre">$data</td>
3339   </tr>
3340 HTML
3341         } # while (my $line = <$fd>)
3342         print "</table>\n\n";
3343         close $fd
3344                 or print "Reading blob failed.\n";
3345         print "</div>";
3346         git_footer_html();
3347 }
3348
3349 sub git_tags {
3350         my $head = git_get_head_hash($project);
3351         git_header_html();
3352         git_print_page_nav('','', $head,undef,$head);
3353         git_print_header_div('summary', $project);
3354
3355         my @tagslist = git_get_tags_list();
3356         if (@tagslist) {
3357                 git_tags_body(\@tagslist);
3358         }
3359         git_footer_html();
3360 }
3361
3362 sub git_heads {
3363         my $head = git_get_head_hash($project);
3364         git_header_html();
3365         git_print_page_nav('','', $head,undef,$head);
3366         git_print_header_div('summary', $project);
3367
3368         my @headslist = git_get_heads_list();
3369         if (@headslist) {
3370                 git_heads_body(\@headslist, $head);
3371         }
3372         git_footer_html();
3373 }
3374
3375 sub git_blob_plain {
3376         my $expires;
3377
3378         if (!defined $hash) {
3379                 if (defined $file_name) {
3380                         my $base = $hash_base || git_get_head_hash($project);
3381                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3382                                 or die_error(undef, "Error lookup file");
3383                 } else {
3384                         die_error(undef, "No file name defined");
3385                 }
3386         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3387                 # blobs defined by non-textual hash id's can be cached
3388                 $expires = "+1d";
3389         }
3390
3391         my $type = shift;
3392         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3393                 or die_error(undef, "Couldn't cat $file_name, $hash");
3394
3395         $type ||= blob_mimetype($fd, $file_name);
3396
3397         # save as filename, even when no $file_name is given
3398         my $save_as = "$hash";
3399         if (defined $file_name) {
3400                 $save_as = $file_name;
3401         } elsif ($type =~ m/^text\//) {
3402                 $save_as .= '.txt';
3403         }
3404
3405         print $cgi->header(
3406                 -type => "$type",
3407                 -expires=>$expires,
3408                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3409         undef $/;
3410         binmode STDOUT, ':raw';
3411         print <$fd>;
3412         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3413         $/ = "\n";
3414         close $fd;
3415 }
3416
3417 sub git_blob {
3418         my $expires;
3419
3420         if (!defined $hash) {
3421                 if (defined $file_name) {
3422                         my $base = $hash_base || git_get_head_hash($project);
3423                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3424                                 or die_error(undef, "Error lookup file");
3425                 } else {
3426                         die_error(undef, "No file name defined");
3427                 }
3428         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3429                 # blobs defined by non-textual hash id's can be cached
3430                 $expires = "+1d";
3431         }
3432
3433         my ($have_blame) = gitweb_check_feature('blame');
3434         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3435                 or die_error(undef, "Couldn't cat $file_name, $hash");
3436         my $mimetype = blob_mimetype($fd, $file_name);
3437         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3438                 close $fd;
3439                 return git_blob_plain($mimetype);
3440         }
3441         # we can have blame only for text/* mimetype
3442         $have_blame &&= ($mimetype =~ m!^text/!);
3443
3444         git_header_html(undef, $expires);
3445         my $formats_nav = '';
3446         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3447                 if (defined $file_name) {
3448                         if ($have_blame) {
3449                                 $formats_nav .=
3450                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3451                                                                hash=>$hash, file_name=>$file_name)},
3452                                                 "blame") .
3453                                         " | ";
3454                         }
3455                         $formats_nav .=
3456                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3457                                                        hash=>$hash, file_name=>$file_name)},
3458                                         "history") .
3459                                 " | " .
3460                                 $cgi->a({-href => href(action=>"blob_plain",
3461                                                        hash=>$hash, file_name=>$file_name)},
3462                                         "raw") .
3463                                 " | " .
3464                                 $cgi->a({-href => href(action=>"blob",
3465                                                        hash_base=>"HEAD", file_name=>$file_name)},
3466                                         "HEAD");
3467                 } else {
3468                         $formats_nav .=
3469                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3470                 }
3471                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3472                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3473         } else {
3474                 print "<div class=\"page_nav\">\n" .
3475                       "<br/><br/></div>\n" .
3476                       "<div class=\"title\">$hash</div>\n";
3477         }
3478         git_print_page_path($file_name, "blob", $hash_base);
3479         print "<div class=\"page_body\">\n";
3480         if ($mimetype =~ m!^text/!) {
3481                 my $nr;
3482                 while (my $line = <$fd>) {
3483                         chomp $line;
3484                         $nr++;
3485                         $line = untabify($line);
3486                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3487                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3488                 }
3489         } elsif ($mimetype =~ m!^image/!) {
3490                 print qq!<img type="$mimetype"!;
3491                 if ($file_name) {
3492                         print qq! alt="$file_name" title="$file_name"!;
3493                 }
3494                 print qq! src="! .
3495                       href(action=>"blob_plain", hash=>$hash,
3496                            hash_base=>$hash_base, file_name=>$file_name) .
3497                       qq!" />\n!;
3498         }
3499         close $fd
3500                 or print "Reading blob failed.\n";
3501         print "</div>";
3502         git_footer_html();
3503 }
3504
3505 sub git_tree {
3506         my $have_snapshot = gitweb_have_snapshot();
3507
3508         if (!defined $hash_base) {
3509                 $hash_base = "HEAD";
3510         }
3511         if (!defined $hash) {
3512                 if (defined $file_name) {
3513                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3514                 } else {
3515                         $hash = $hash_base;
3516                 }
3517         }
3518         $/ = "\0";
3519         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3520                 or die_error(undef, "Open git-ls-tree failed");
3521         my @entries = map { chomp; $_ } <$fd>;
3522         close $fd or die_error(undef, "Reading tree failed");
3523         $/ = "\n";
3524
3525         my $refs = git_get_references();
3526         my $ref = format_ref_marker($refs, $hash_base);
3527         git_header_html();
3528         my $basedir = '';
3529         my ($have_blame) = gitweb_check_feature('blame');
3530         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3531                 my @views_nav = ();
3532                 if (defined $file_name) {
3533                         push @views_nav,
3534                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3535                                                        hash=>$hash, file_name=>$file_name)},
3536                                         "history"),
3537                                 $cgi->a({-href => href(action=>"tree",
3538                                                        hash_base=>"HEAD", file_name=>$file_name)},
3539                                         "HEAD"),
3540                 }
3541                 if ($have_snapshot) {
3542                         # FIXME: Should be available when we have no hash base as well.
3543                         push @views_nav,
3544                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3545                                         "snapshot");
3546                 }
3547                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3548                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3549         } else {
3550                 undef $hash_base;
3551                 print "<div class=\"page_nav\">\n";
3552                 print "<br/><br/></div>\n";
3553                 print "<div class=\"title\">$hash</div>\n";
3554         }
3555         if (defined $file_name) {
3556                 $basedir = $file_name;
3557                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3558                         $basedir .= '/';
3559                 }
3560         }
3561         git_print_page_path($file_name, 'tree', $hash_base);
3562         print "<div class=\"page_body\">\n";
3563         print "<table cellspacing=\"0\">\n";
3564         my $alternate = 1;
3565         # '..' (top directory) link if possible
3566         if (defined $hash_base &&
3567             defined $file_name && $file_name =~ m![^/]+$!) {
3568                 if ($alternate) {
3569                         print "<tr class=\"dark\">\n";
3570                 } else {
3571                         print "<tr class=\"light\">\n";
3572                 }
3573                 $alternate ^= 1;
3574
3575                 my $up = $file_name;
3576                 $up =~ s!/?[^/]+$!!;
3577                 undef $up unless $up;
3578                 # based on git_print_tree_entry
3579                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3580                 print '<td class="list">';
3581                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3582                                              file_name=>$up)},
3583                               "..");
3584                 print "</td>\n";
3585                 print "<td class=\"link\"></td>\n";
3586
3587                 print "</tr>\n";
3588         }
3589         foreach my $line (@entries) {
3590                 my %t = parse_ls_tree_line($line, -z => 1);
3591
3592                 if ($alternate) {
3593                         print "<tr class=\"dark\">\n";
3594                 } else {
3595                         print "<tr class=\"light\">\n";
3596                 }
3597                 $alternate ^= 1;
3598
3599                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3600
3601                 print "</tr>\n";
3602         }
3603         print "</table>\n" .
3604               "</div>";
3605         git_footer_html();
3606 }
3607
3608 sub git_snapshot {
3609         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3610         my $have_snapshot = (defined $ctype && defined $suffix);
3611         if (!$have_snapshot) {
3612                 die_error('403 Permission denied', "Permission denied");
3613         }
3614
3615         if (!defined $hash) {
3616                 $hash = git_get_head_hash($project);
3617         }
3618
3619         my $filename = basename($project) . "-$hash.tar.$suffix";
3620
3621         print $cgi->header(
3622                 -type => "application/$ctype",
3623                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3624                 -status => '200 OK');
3625
3626         my $git = git_cmd_str();
3627         my $name = $project;
3628         $name =~ s/\047/\047\\\047\047/g;
3629         open my $fd, "-|",
3630         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3631                 or die_error(undef, "Execute git-tar-tree failed.");
3632         binmode STDOUT, ':raw';
3633         print <$fd>;
3634         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3635         close $fd;
3636
3637 }
3638
3639 sub git_log {
3640         my $head = git_get_head_hash($project);
3641         if (!defined $hash) {
3642                 $hash = $head;
3643         }
3644         if (!defined $page) {
3645                 $page = 0;
3646         }
3647         my $refs = git_get_references();
3648
3649         my @commitlist = parse_commits($hash, 101, (100 * $page));
3650
3651         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3652
3653         git_header_html();
3654         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3655
3656         if (!@commitlist) {
3657                 my %co = parse_commit($hash);
3658
3659                 git_print_header_div('summary', $project);
3660                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3661         }
3662         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3663         for (my $i = 0; $i <= $to; $i++) {
3664                 my %co = %{$commitlist[$i]};
3665                 next if !%co;
3666                 my $commit = $co{'id'};
3667                 my $ref = format_ref_marker($refs, $commit);
3668                 my %ad = parse_date($co{'author_epoch'});
3669                 git_print_header_div('commit',
3670                                "<span class=\"age\">$co{'age_string'}</span>" .
3671                                esc_html($co{'title'}) . $ref,
3672                                $commit);
3673                 print "<div class=\"title_text\">\n" .
3674                       "<div class=\"log_link\">\n" .
3675                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3676                       " | " .
3677                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3678                       " | " .
3679                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3680                       "<br/>\n" .
3681                       "</div>\n" .
3682                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3683                       "</div>\n";
3684
3685                 print "<div class=\"log_body\">\n";
3686                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3687                 print "</div>\n";
3688         }
3689         if ($#commitlist >= 100) {
3690                 print "<div class=\"page_nav\">\n";
3691                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3692                                -accesskey => "n", -title => "Alt-n"}, "next");
3693                 print "</div>\n";
3694         }
3695         git_footer_html();
3696 }
3697
3698 sub git_commit {
3699         $hash ||= $hash_base || "HEAD";
3700         my %co = parse_commit($hash);
3701         if (!%co) {
3702                 die_error(undef, "Unknown commit object");
3703         }
3704         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3705         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3706
3707         my $parent  = $co{'parent'};
3708         my $parents = $co{'parents'}; # listref
3709
3710         # we need to prepare $formats_nav before any parameter munging
3711         my $formats_nav;
3712         if (!defined $parent) {
3713                 # --root commitdiff
3714                 $formats_nav .= '(initial)';
3715         } elsif (@$parents == 1) {
3716                 # single parent commit
3717                 $formats_nav .=
3718                         '(parent: ' .
3719                         $cgi->a({-href => href(action=>"commit",
3720                                                hash=>$parent)},
3721                                 esc_html(substr($parent, 0, 7))) .
3722                         ')';
3723         } else {
3724                 # merge commit
3725                 $formats_nav .=
3726                         '(merge: ' .
3727                         join(' ', map {
3728                                 $cgi->a({-href => href(action=>"commitdiff",
3729                                                        hash=>$_)},
3730                                         esc_html(substr($_, 0, 7)));
3731                         } @$parents ) .
3732                         ')';
3733         }
3734
3735         if (!defined $parent) {
3736                 $parent = "--root";
3737         }
3738         my @difftree;
3739         if (@$parents <= 1) {
3740                 # difftree output is not printed for merges
3741                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3742                         @diff_opts, $parent, $hash, "--"
3743                                 or die_error(undef, "Open git-diff-tree failed");
3744                 @difftree = map { chomp; $_ } <$fd>;
3745                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3746         }
3747
3748         # non-textual hash id's can be cached
3749         my $expires;
3750         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3751                 $expires = "+1d";
3752         }
3753         my $refs = git_get_references();
3754         my $ref = format_ref_marker($refs, $co{'id'});
3755
3756         my $have_snapshot = gitweb_have_snapshot();
3757
3758         git_header_html(undef, $expires);
3759         git_print_page_nav('commit', '',
3760                            $hash, $co{'tree'}, $hash,
3761                            $formats_nav);
3762
3763         if (defined $co{'parent'}) {
3764                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3765         } else {
3766                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3767         }
3768         print "<div class=\"title_text\">\n" .
3769               "<table cellspacing=\"0\">\n";
3770         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3771               "<tr>" .
3772               "<td></td><td> $ad{'rfc2822'}";
3773         if ($ad{'hour_local'} < 6) {
3774                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3775                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3776         } else {
3777                 printf(" (%02d:%02d %s)",
3778                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3779         }
3780         print "</td>" .
3781               "</tr>\n";
3782         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3783         print "<tr><td></td><td> $cd{'rfc2822'}" .
3784               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3785               "</td></tr>\n";
3786         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3787         print "<tr>" .
3788               "<td>tree</td>" .
3789               "<td class=\"sha1\">" .
3790               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3791                        class => "list"}, $co{'tree'}) .
3792               "</td>" .
3793               "<td class=\"link\">" .
3794               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3795                       "tree");
3796         if ($have_snapshot) {
3797                 print " | " .
3798                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3799         }
3800         print "</td>" .
3801               "</tr>\n";
3802
3803         foreach my $par (@$parents) {
3804                 print "<tr>" .
3805                       "<td>parent</td>" .
3806                       "<td class=\"sha1\">" .
3807                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3808                                class => "list"}, $par) .
3809                       "</td>" .
3810                       "<td class=\"link\">" .
3811                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3812                       " | " .
3813                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3814                       "</td>" .
3815                       "</tr>\n";
3816         }
3817         print "</table>".
3818               "</div>\n";
3819
3820         print "<div class=\"page_body\">\n";
3821         git_print_log($co{'comment'});
3822         print "</div>\n";
3823
3824         if (@$parents <= 1) {
3825                 # do not output difftree/whatchanged for merges
3826                 git_difftree_body(\@difftree, $hash, $parent);
3827         }
3828
3829         git_footer_html();
3830 }
3831
3832 sub git_object {
3833         # object is defined by:
3834         # - hash or hash_base alone
3835         # - hash_base and file_name
3836         my $type;
3837
3838         # - hash or hash_base alone
3839         if ($hash || ($hash_base && !defined $file_name)) {
3840                 my $object_id = $hash || $hash_base;
3841
3842                 my $git_command = git_cmd_str();
3843                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3844                         or die_error('404 Not Found', "Object does not exist");
3845                 $type = <$fd>;
3846                 chomp $type;
3847                 close $fd
3848                         or die_error('404 Not Found', "Object does not exist");
3849
3850         # - hash_base and file_name
3851         } elsif ($hash_base && defined $file_name) {
3852                 $file_name =~ s,/+$,,;
3853
3854                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3855                         or die_error('404 Not Found', "Base object does not exist");
3856
3857                 # here errors should not hapen
3858                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3859                         or die_error(undef, "Open git-ls-tree failed");
3860                 my $line = <$fd>;
3861                 close $fd;
3862
3863                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3864                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3865                         die_error('404 Not Found', "File or directory for given base does not exist");
3866                 }
3867                 $type = $2;
3868                 $hash = $3;
3869         } else {
3870                 die_error('404 Not Found', "Not enough information to find object");
3871         }
3872
3873         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3874                                           hash=>$hash, hash_base=>$hash_base,
3875                                           file_name=>$file_name),
3876                              -status => '302 Found');
3877 }
3878
3879 sub git_blobdiff {
3880         my $format = shift || 'html';
3881
3882         my $fd;
3883         my @difftree;
3884         my %diffinfo;
3885         my $expires;
3886
3887         # preparing $fd and %diffinfo for git_patchset_body
3888         # new style URI
3889         if (defined $hash_base && defined $hash_parent_base) {
3890                 if (defined $file_name) {
3891                         # read raw output
3892                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3893                                 $hash_parent_base, $hash_base,
3894                                 "--", $file_name
3895                                 or die_error(undef, "Open git-diff-tree failed");
3896                         @difftree = map { chomp; $_ } <$fd>;
3897                         close $fd
3898                                 or die_error(undef, "Reading git-diff-tree failed");
3899                         @difftree
3900                                 or die_error('404 Not Found', "Blob diff not found");
3901
3902                 } elsif (defined $hash &&
3903                          $hash =~ /[0-9a-fA-F]{40}/) {
3904                         # try to find filename from $hash
3905
3906                         # read filtered raw output
3907                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3908                                 $hash_parent_base, $hash_base, "--"
3909                                 or die_error(undef, "Open git-diff-tree failed");
3910                         @difftree =
3911                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3912                                 # $hash == to_id
3913                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3914                                 map { chomp; $_ } <$fd>;
3915                         close $fd
3916                                 or die_error(undef, "Reading git-diff-tree failed");
3917                         @difftree
3918                                 or die_error('404 Not Found', "Blob diff not found");
3919
3920                 } else {
3921                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3922                 }
3923
3924                 if (@difftree > 1) {
3925                         die_error('404 Not Found', "Ambiguous blob diff specification");
3926                 }
3927
3928                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3929                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3930                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3931
3932                 $hash_parent ||= $diffinfo{'from_id'};
3933                 $hash        ||= $diffinfo{'to_id'};
3934
3935                 # non-textual hash id's can be cached
3936                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3937                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3938                         $expires = '+1d';
3939                 }
3940
3941                 # open patch output
3942                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3943                         '-p', $hash_parent_base, $hash_base,
3944                         "--", $file_name
3945                         or die_error(undef, "Open git-diff-tree failed");
3946         }
3947
3948         # old/legacy style URI
3949         if (!%diffinfo && # if new style URI failed
3950             defined $hash && defined $hash_parent) {
3951                 # fake git-diff-tree raw output
3952                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3953                 $diffinfo{'from_id'} = $hash_parent;
3954                 $diffinfo{'to_id'}   = $hash;
3955                 if (defined $file_name) {
3956                         if (defined $file_parent) {
3957                                 $diffinfo{'status'} = '2';
3958                                 $diffinfo{'from_file'} = $file_parent;
3959                                 $diffinfo{'to_file'}   = $file_name;
3960                         } else { # assume not renamed
3961                                 $diffinfo{'status'} = '1';
3962                                 $diffinfo{'from_file'} = $file_name;
3963                                 $diffinfo{'to_file'}   = $file_name;
3964                         }
3965                 } else { # no filename given
3966                         $diffinfo{'status'} = '2';
3967                         $diffinfo{'from_file'} = $hash_parent;
3968                         $diffinfo{'to_file'}   = $hash;
3969                 }
3970
3971                 # non-textual hash id's can be cached
3972                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3973                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3974                         $expires = '+1d';
3975                 }
3976
3977                 # open patch output
3978                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3979                         $hash_parent, $hash, "--"
3980                         or die_error(undef, "Open git-diff failed");
3981         } else  {
3982                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3983                         unless %diffinfo;
3984         }
3985
3986         # header
3987         if ($format eq 'html') {
3988                 my $formats_nav =
3989                         $cgi->a({-href => href(action=>"blobdiff_plain",
3990                                                hash=>$hash, hash_parent=>$hash_parent,
3991                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3992                                                file_name=>$file_name, file_parent=>$file_parent)},
3993                                 "raw");
3994                 git_header_html(undef, $expires);
3995                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3996                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3997                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3998                 } else {
3999                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4000                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4001                 }
4002                 if (defined $file_name) {
4003                         git_print_page_path($file_name, "blob", $hash_base);
4004                 } else {
4005                         print "<div class=\"page_path\"></div>\n";
4006                 }
4007
4008         } elsif ($format eq 'plain') {
4009                 print $cgi->header(
4010                         -type => 'text/plain',
4011                         -charset => 'utf-8',
4012                         -expires => $expires,
4013                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4014
4015                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4016
4017         } else {
4018                 die_error(undef, "Unknown blobdiff format");
4019         }
4020
4021         # patch
4022         if ($format eq 'html') {
4023                 print "<div class=\"page_body\">\n";
4024
4025                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4026                 close $fd;
4027
4028                 print "</div>\n"; # class="page_body"
4029                 git_footer_html();
4030
4031         } else {
4032                 while (my $line = <$fd>) {
4033                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4034                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4035
4036                         print $line;
4037
4038                         last if $line =~ m!^\+\+\+!;
4039                 }
4040                 local $/ = undef;
4041                 print <$fd>;
4042                 close $fd;
4043         }
4044 }
4045
4046 sub git_blobdiff_plain {
4047         git_blobdiff('plain');
4048 }
4049
4050 sub git_commitdiff {
4051         my $format = shift || 'html';
4052         $hash ||= $hash_base || "HEAD";
4053         my %co = parse_commit($hash);
4054         if (!%co) {
4055                 die_error(undef, "Unknown commit object");
4056         }
4057
4058         # we need to prepare $formats_nav before any parameter munging
4059         my $formats_nav;
4060         if ($format eq 'html') {
4061                 $formats_nav =
4062                         $cgi->a({-href => href(action=>"commitdiff_plain",
4063                                                hash=>$hash, hash_parent=>$hash_parent)},
4064                                 "raw");
4065
4066                 if (defined $hash_parent) {
4067                         # commitdiff with two commits given
4068                         my $hash_parent_short = $hash_parent;
4069                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4070                                 $hash_parent_short = substr($hash_parent, 0, 7);
4071                         }
4072                         $formats_nav .=
4073                                 ' (from: ' .
4074                                 $cgi->a({-href => href(action=>"commitdiff",
4075                                                        hash=>$hash_parent)},
4076                                         esc_html($hash_parent_short)) .
4077                                 ')';
4078                 } elsif (!$co{'parent'}) {
4079                         # --root commitdiff
4080                         $formats_nav .= ' (initial)';
4081                 } elsif (scalar @{$co{'parents'}} == 1) {
4082                         # single parent commit
4083                         $formats_nav .=
4084                                 ' (parent: ' .
4085                                 $cgi->a({-href => href(action=>"commitdiff",
4086                                                        hash=>$co{'parent'})},
4087                                         esc_html(substr($co{'parent'}, 0, 7))) .
4088                                 ')';
4089                 } else {
4090                         # merge commit
4091                         $formats_nav .=
4092                                 ' (merge: ' .
4093                                 join(' ', map {
4094                                         $cgi->a({-href => href(action=>"commitdiff",
4095                                                                hash=>$_)},
4096                                                 esc_html(substr($_, 0, 7)));
4097                                 } @{$co{'parents'}} ) .
4098                                 ')';
4099                 }
4100         }
4101
4102         if (!defined $hash_parent) {
4103                 $hash_parent = $co{'parent'} || '--root';
4104         }
4105
4106         # read commitdiff
4107         my $fd;
4108         my @difftree;
4109         if ($format eq 'html') {
4110                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4111                         "--no-commit-id", "--patch-with-raw", "--full-index",
4112                         $hash_parent, $hash, "--"
4113                         or die_error(undef, "Open git-diff-tree failed");
4114
4115                 while (my $line = <$fd>) {
4116                         chomp $line;
4117                         # empty line ends raw part of diff-tree output
4118                         last unless $line;
4119                         push @difftree, $line;
4120                 }
4121
4122         } elsif ($format eq 'plain') {
4123                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4124                         '-p', $hash_parent, $hash, "--"
4125                         or die_error(undef, "Open git-diff-tree failed");
4126
4127         } else {
4128                 die_error(undef, "Unknown commitdiff format");
4129         }
4130
4131         # non-textual hash id's can be cached
4132         my $expires;
4133         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4134                 $expires = "+1d";
4135         }
4136
4137         # write commit message
4138         if ($format eq 'html') {
4139                 my $refs = git_get_references();
4140                 my $ref = format_ref_marker($refs, $co{'id'});
4141
4142                 git_header_html(undef, $expires);
4143                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4144                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4145                 git_print_authorship(\%co);
4146                 print "<div class=\"page_body\">\n";
4147                 if (@{$co{'comment'}} > 1) {
4148                         print "<div class=\"log\">\n";
4149                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4150                         print "</div>\n"; # class="log"
4151                 }
4152
4153         } elsif ($format eq 'plain') {
4154                 my $refs = git_get_references("tags");
4155                 my $tagname = git_get_rev_name_tags($hash);
4156                 my $filename = basename($project) . "-$hash.patch";
4157
4158                 print $cgi->header(
4159                         -type => 'text/plain',
4160                         -charset => 'utf-8',
4161                         -expires => $expires,
4162                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4163                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4164                 print <<TEXT;
4165 From: $co{'author'}
4166 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4167 Subject: $co{'title'}
4168 TEXT
4169                 print "X-Git-Tag: $tagname\n" if $tagname;
4170                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4171
4172                 foreach my $line (@{$co{'comment'}}) {
4173                         print "$line\n";
4174                 }
4175                 print "---\n\n";
4176         }
4177
4178         # write patch
4179         if ($format eq 'html') {
4180                 git_difftree_body(\@difftree, $hash, $hash_parent);
4181                 print "<br/>\n";
4182
4183                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4184                 close $fd;
4185                 print "</div>\n"; # class="page_body"
4186                 git_footer_html();
4187
4188         } elsif ($format eq 'plain') {
4189                 local $/ = undef;
4190                 print <$fd>;
4191                 close $fd
4192                         or print "Reading git-diff-tree failed\n";
4193         }
4194 }
4195
4196 sub git_commitdiff_plain {
4197         git_commitdiff('plain');
4198 }
4199
4200 sub git_history {
4201         if (!defined $hash_base) {
4202                 $hash_base = git_get_head_hash($project);
4203         }
4204         if (!defined $page) {
4205                 $page = 0;
4206         }
4207         my $ftype;
4208         my %co = parse_commit($hash_base);
4209         if (!%co) {
4210                 die_error(undef, "Unknown commit object");
4211         }
4212
4213         my $refs = git_get_references();
4214         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4215
4216         if (!defined $hash && defined $file_name) {
4217                 $hash = git_get_hash_by_path($hash_base, $file_name);
4218         }
4219         if (defined $hash) {
4220                 $ftype = git_get_type($hash);
4221         }
4222
4223         open my $fd, "-|",
4224                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4225                         or die_error(undef, "Open git-rev-list-failed");
4226         my @revlist = map { chomp; $_ } <$fd>;
4227         close $fd
4228                 or die_error(undef, "Reading git-rev-list failed");
4229
4230         my $paging_nav = '';
4231         if ($page > 0) {
4232                 $paging_nav .=
4233                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4234                                                file_name=>$file_name)},
4235                                 "first");
4236                 $paging_nav .= " &sdot; " .
4237                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4238                                                file_name=>$file_name, page=>$page-1),
4239                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4240         } else {
4241                 $paging_nav .= "first";
4242                 $paging_nav .= " &sdot; prev";
4243         }
4244         if ($#revlist >= (100 * ($page+1)-1)) {
4245                 $paging_nav .= " &sdot; " .
4246                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4247                                                file_name=>$file_name, page=>$page+1),
4248                                  -accesskey => "n", -title => "Alt-n"}, "next");
4249         } else {
4250                 $paging_nav .= " &sdot; next";
4251         }
4252         my $next_link = '';
4253         if ($#revlist >= (100 * ($page+1)-1)) {
4254                 $next_link =
4255                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4256                                                file_name=>$file_name, page=>$page+1),
4257                                  -title => "Alt-n"}, "next");
4258         }
4259
4260         git_header_html();
4261         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4262         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4263         git_print_page_path($file_name, $ftype, $hash_base);
4264
4265         git_history_body(\@revlist, ($page * 100), $#revlist,
4266                          $refs, $hash_base, $ftype, $next_link);
4267
4268         git_footer_html();
4269 }
4270
4271 sub git_search {
4272         my ($have_search) = gitweb_check_feature('search');
4273         if (!$have_search) {
4274                 die_error('403 Permission denied', "Permission denied");
4275         }
4276         if (!defined $searchtext) {
4277                 die_error(undef, "Text field empty");
4278         }
4279         if (!defined $hash) {
4280                 $hash = git_get_head_hash($project);
4281         }
4282         my %co = parse_commit($hash);
4283         if (!%co) {
4284                 die_error(undef, "Unknown commit object");
4285         }
4286         if (!defined $page) {
4287                 $page = 0;
4288         }
4289
4290         $searchtype ||= 'commit';
4291         if ($searchtype eq 'pickaxe') {
4292                 # pickaxe may take all resources of your box and run for several minutes
4293                 # with every query - so decide by yourself how public you make this feature
4294                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4295                 if (!$have_pickaxe) {
4296                         die_error('403 Permission denied', "Permission denied");
4297                 }
4298         }
4299
4300         git_header_html();
4301
4302         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4303                 my $greptype;
4304                 if ($searchtype eq 'commit') {
4305                         $greptype = "--grep=";
4306                 } elsif ($searchtype eq 'author') {
4307                         $greptype = "--author=";
4308                 } elsif ($searchtype eq 'committer') {
4309                         $greptype = "--committer=";
4310                 }
4311                 $greptype .= $searchtext;
4312                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4313
4314                 my $paging_nav = '';
4315                 if ($page > 0) {
4316                         $paging_nav .=
4317                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4318                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4319                                         "first");
4320                         $paging_nav .= " &sdot; " .
4321                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4322                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4323                                                        page=>$page-1),
4324                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4325                 } else {
4326                         $paging_nav .= "first";
4327                         $paging_nav .= " &sdot; prev";
4328                 }
4329                 if ($#commitlist >= 100) {
4330                         $paging_nav .= " &sdot; " .
4331                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4332                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4333                                                        page=>$page+1),
4334                                          -accesskey => "n", -title => "Alt-n"}, "next");
4335                 } else {
4336                         $paging_nav .= " &sdot; next";
4337                 }
4338                 my $next_link = '';
4339                 if ($#commitlist >= 100) {
4340                         $next_link =
4341                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4342                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4343                                                        page=>$page+1),
4344                                          -accesskey => "n", -title => "Alt-n"}, "next");
4345                 }
4346
4347                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4348                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4349                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4350         }
4351
4352         if ($searchtype eq 'pickaxe') {
4353                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4354                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4355
4356                 print "<table cellspacing=\"0\">\n";
4357                 my $alternate = 1;
4358                 $/ = "\n";
4359                 my $git_command = git_cmd_str();
4360                 open my $fd, "-|", "$git_command rev-list $hash | " .
4361                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4362                 undef %co;
4363                 my @files;
4364                 while (my $line = <$fd>) {
4365                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4366                                 my %set;
4367                                 $set{'file'} = $6;
4368                                 $set{'from_id'} = $3;
4369                                 $set{'to_id'} = $4;
4370                                 $set{'id'} = $set{'to_id'};
4371                                 if ($set{'id'} =~ m/0{40}/) {
4372                                         $set{'id'} = $set{'from_id'};
4373                                 }
4374                                 if ($set{'id'} =~ m/0{40}/) {
4375                                         next;
4376                                 }
4377                                 push @files, \%set;
4378                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4379                                 if (%co) {
4380                                         if ($alternate) {
4381                                                 print "<tr class=\"dark\">\n";
4382                                         } else {
4383                                                 print "<tr class=\"light\">\n";
4384                                         }
4385                                         $alternate ^= 1;
4386                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4387                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4388                                               "<td>" .
4389                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4390                                                       -class => "list subject"},
4391                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4392                                         while (my $setref = shift @files) {
4393                                                 my %set = %$setref;
4394                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4395                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4396                                                               -class => "list"},
4397                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4398                                                       "<br/>\n";
4399                                         }
4400                                         print "</td>\n" .
4401                                               "<td class=\"link\">" .
4402                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4403                                               " | " .
4404                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4405                                         print "</td>\n" .
4406                                               "</tr>\n";
4407                                 }
4408                                 %co = parse_commit($1);
4409                         }
4410                 }
4411                 close $fd;
4412
4413                 print "</table>\n";
4414         }
4415         git_footer_html();
4416 }
4417
4418 sub git_search_help {
4419         git_header_html();
4420         git_print_page_nav('','', $hash,$hash,$hash);
4421         print <<EOT;
4422 <dl>
4423 <dt><b>commit</b></dt>
4424 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4425 <dt><b>author</b></dt>
4426 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4427 <dt><b>committer</b></dt>
4428 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4429 EOT
4430         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4431         if ($have_pickaxe) {
4432                 print <<EOT;
4433 <dt><b>pickaxe</b></dt>
4434 <dd>All commits that caused the string to appear or disappear from any file (changes that
4435 added, removed or "modified" the string) will be listed. This search can take a while and
4436 takes a lot of strain on the server, so please use it wisely.</dd>
4437 EOT
4438         }
4439         print "</dl>\n";
4440         git_footer_html();
4441 }
4442
4443 sub git_shortlog {
4444         my $head = git_get_head_hash($project);
4445         if (!defined $hash) {
4446                 $hash = $head;
4447         }
4448         if (!defined $page) {
4449                 $page = 0;
4450         }
4451         my $refs = git_get_references();
4452
4453         my @commitlist = parse_commits($head, 101, (100 * $page));
4454
4455         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4456         my $next_link = '';
4457         if ($#commitlist >= 100) {
4458                 $next_link =
4459                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4460                                  -accesskey => "n", -title => "Alt-n"}, "next");
4461         }
4462
4463         git_header_html();
4464         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4465         git_print_header_div('summary', $project);
4466
4467         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4468
4469         git_footer_html();
4470 }
4471
4472 ## ......................................................................
4473 ## feeds (RSS, Atom; OPML)
4474
4475 sub git_feed {
4476         my $format = shift || 'atom';
4477         my ($have_blame) = gitweb_check_feature('blame');
4478
4479         # Atom: http://www.atomenabled.org/developers/syndication/
4480         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4481         if ($format ne 'rss' && $format ne 'atom') {
4482                 die_error(undef, "Unknown web feed format");
4483         }
4484
4485         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4486         my $head = $hash || 'HEAD';
4487         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4488                 $head, "--", (defined $file_name ? $file_name : ())
4489                 or die_error(undef, "Open git-rev-list failed");
4490         my @revlist = map { chomp; $_ } <$fd>;
4491         close $fd or die_error(undef, "Reading git-rev-list failed");
4492
4493         my %latest_commit;
4494         my %latest_date;
4495         my $content_type = "application/$format+xml";
4496         if (defined $cgi->http('HTTP_ACCEPT') &&
4497                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4498                 # browser (feed reader) prefers text/xml
4499                 $content_type = 'text/xml';
4500         }
4501         if (defined($revlist[0])) {
4502                 %latest_commit = parse_commit($revlist[0]);
4503                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4504                 print $cgi->header(
4505                         -type => $content_type,
4506                         -charset => 'utf-8',
4507                         -last_modified => $latest_date{'rfc2822'});
4508         } else {
4509                 print $cgi->header(
4510                         -type => $content_type,
4511                         -charset => 'utf-8');
4512         }
4513
4514         # Optimization: skip generating the body if client asks only
4515         # for Last-Modified date.
4516         return if ($cgi->request_method() eq 'HEAD');
4517
4518         # header variables
4519         my $title = "$site_name - $project/$action";
4520         my $feed_type = 'log';
4521         if (defined $hash) {
4522                 $title .= " - '$hash'";
4523                 $feed_type = 'branch log';
4524                 if (defined $file_name) {
4525                         $title .= " :: $file_name";
4526                         $feed_type = 'history';
4527                 }
4528         } elsif (defined $file_name) {
4529                 $title .= " - $file_name";
4530                 $feed_type = 'history';
4531         }
4532         $title .= " $feed_type";
4533         my $descr = git_get_project_description($project);
4534         if (defined $descr) {
4535                 $descr = esc_html($descr);
4536         } else {
4537                 $descr = "$project " .
4538                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4539                          " feed";
4540         }
4541         my $owner = git_get_project_owner($project);
4542         $owner = esc_html($owner);
4543
4544         #header
4545         my $alt_url;
4546         if (defined $file_name) {
4547                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4548         } elsif (defined $hash) {
4549                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4550         } else {
4551                 $alt_url = href(-full=>1, action=>"summary");
4552         }
4553         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4554         if ($format eq 'rss') {
4555                 print <<XML;
4556 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4557 <channel>
4558 XML
4559                 print "<title>$title</title>\n" .
4560                       "<link>$alt_url</link>\n" .
4561                       "<description>$descr</description>\n" .
4562                       "<language>en</language>\n";
4563         } elsif ($format eq 'atom') {
4564                 print <<XML;
4565 <feed xmlns="http://www.w3.org/2005/Atom">
4566 XML
4567                 print "<title>$title</title>\n" .
4568                       "<subtitle>$descr</subtitle>\n" .
4569                       '<link rel="alternate" type="text/html" href="' .
4570                       $alt_url . '" />' . "\n" .
4571                       '<link rel="self" type="' . $content_type . '" href="' .
4572                       $cgi->self_url() . '" />' . "\n" .
4573                       "<id>" . href(-full=>1) . "</id>\n" .
4574                       # use project owner for feed author
4575                       "<author><name>$owner</name></author>\n";
4576                 if (defined $favicon) {
4577                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4578                 }
4579                 if (defined $logo_url) {
4580                         # not twice as wide as tall: 72 x 27 pixels
4581                         print "<logo>" . esc_url($logo) . "</logo>\n";
4582                 }
4583                 if (! %latest_date) {
4584                         # dummy date to keep the feed valid until commits trickle in:
4585                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4586                 } else {
4587                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4588                 }
4589         }
4590
4591         # contents
4592         for (my $i = 0; $i <= $#revlist; $i++) {
4593                 my $commit = $revlist[$i];
4594                 my %co = parse_commit($commit);
4595                 # we read 150, we always show 30 and the ones more recent than 48 hours
4596                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4597                         last;
4598                 }
4599                 my %cd = parse_date($co{'author_epoch'});
4600
4601                 # get list of changed files
4602                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4603                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4604                         or next;
4605                 my @difftree = map { chomp; $_ } <$fd>;
4606                 close $fd
4607                         or next;
4608
4609                 # print element (entry, item)
4610                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4611                 if ($format eq 'rss') {
4612                         print "<item>\n" .
4613                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4614                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4615                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4616                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4617                               "<link>$co_url</link>\n" .
4618                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4619                               "<content:encoded>" .
4620                               "<![CDATA[\n";
4621                 } elsif ($format eq 'atom') {
4622                         print "<entry>\n" .
4623                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4624                               "<updated>$cd{'iso-8601'}</updated>\n" .
4625                               "<author>\n" .
4626                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4627                         if ($co{'author_email'}) {
4628                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4629                         }
4630                         print "</author>\n" .
4631                               # use committer for contributor
4632                               "<contributor>\n" .
4633                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4634                         if ($co{'committer_email'}) {
4635                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4636                         }
4637                         print "</contributor>\n" .
4638                               "<published>$cd{'iso-8601'}</published>\n" .
4639                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4640                               "<id>$co_url</id>\n" .
4641                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4642                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4643                 }
4644                 my $comment = $co{'comment'};
4645                 print "<pre>\n";
4646                 foreach my $line (@$comment) {
4647                         $line = esc_html($line);
4648                         print "$line\n";
4649                 }
4650                 print "</pre><ul>\n";
4651                 foreach my $difftree_line (@difftree) {
4652                         my %difftree = parse_difftree_raw_line($difftree_line);
4653                         next if !$difftree{'from_id'};
4654
4655                         my $file = $difftree{'file'} || $difftree{'to_file'};
4656
4657                         print "<li>" .
4658                               "[" .
4659                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4660                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4661                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4662                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4663                                       -title => "diff"}, 'D');
4664                         if ($have_blame) {
4665                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4666                                                              file_name=>$file, hash_base=>$commit),
4667                                               -title => "blame"}, 'B');
4668                         }
4669                         # if this is not a feed of a file history
4670                         if (!defined $file_name || $file_name ne $file) {
4671                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4672                                                              file_name=>$file, hash=>$commit),
4673                                               -title => "history"}, 'H');
4674                         }
4675                         $file = esc_path($file);
4676                         print "] ".
4677                               "$file</li>\n";
4678                 }
4679                 if ($format eq 'rss') {
4680                         print "</ul>]]>\n" .
4681                               "</content:encoded>\n" .
4682                               "</item>\n";
4683                 } elsif ($format eq 'atom') {
4684                         print "</ul>\n</div>\n" .
4685                               "</content>\n" .
4686                               "</entry>\n";
4687                 }
4688         }
4689
4690         # end of feed
4691         if ($format eq 'rss') {
4692                 print "</channel>\n</rss>\n";
4693         }       elsif ($format eq 'atom') {
4694                 print "</feed>\n";
4695         }
4696 }
4697
4698 sub git_rss {
4699         git_feed('rss');
4700 }
4701
4702 sub git_atom {
4703         git_feed('atom');
4704 }
4705
4706 sub git_opml {
4707         my @list = git_get_projects_list();
4708
4709         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4710         print <<XML;
4711 <?xml version="1.0" encoding="utf-8"?>
4712 <opml version="1.0">
4713 <head>
4714   <title>$site_name OPML Export</title>
4715 </head>
4716 <body>
4717 <outline text="git RSS feeds">
4718 XML
4719
4720         foreach my $pr (@list) {
4721                 my %proj = %$pr;
4722                 my $head = git_get_head_hash($proj{'path'});
4723                 if (!defined $head) {
4724                         next;
4725                 }
4726                 $git_dir = "$projectroot/$proj{'path'}";
4727                 my %co = parse_commit($head);
4728                 if (!%co) {
4729                         next;
4730                 }
4731
4732                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4733                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4734                 my $html = "$my_url?p=$proj{'path'};a=summary";
4735                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4736         }
4737         print <<XML;
4738 </outline>
4739 </body>
4740 </opml>
4741 XML
4742 }