git.oblomov.eu Git - git/blob - gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{MOD_PERL};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # show repository only if this file exists
  75 # (only effective if this variable evaluates to true)
  76 our $export_ok = "++GITWEB_EXPORT_OK++";
  77
  78 # only allow viewing of repositories also shown on the overview page
  79 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  80
  81 # list of git base URLs used for URL to where fetch project from,
  82 # i.e. full URL is "$git_base_url/$project"
  83 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  84
  85 # default blob_plain mimetype and default charset for text/plain blob
  86 our $default_blob_plain_mimetype = 'text/plain';
  87 our $default_text_plain_charset  = undef;
  88
  89 # file to use for guessing MIME types before trying /etc/mime.types
  90 # (relative to the current git repository)
  91 our $mimetypes_file = undef;
  92
  93 # You define site-wide feature defaults here; override them with
  94 # $GITWEB_CONFIG as necessary.
  95 our %feature = (
  96         # feature => {
  97         #       'sub' => feature-sub (subroutine),
  98         #       'override' => allow-override (boolean),
  99         #       'default' => [ default options...] (array reference)}
 100         #
 101         # if feature is overridable (it means that allow-override has true value,
 102         # then feature-sub will be called with default options as parameters;
 103         # return value of feature-sub indicates if to enable specified feature
 104         #
 105         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 106
 107         # Enable the 'blame' blob view, showing the last commit that modified
 108         # each line in the file. This can be very CPU-intensive.
 109
 110         # To enable system wide have in $GITWEB_CONFIG
 111         # $feature{'blame'}{'default'} = [1];
 112         # To have project specific config enable override in $GITWEB_CONFIG
 113         # $feature{'blame'}{'override'} = 1;
 114         # and in project config gitweb.blame = 0|1;
 115         'blame' => {
 116                 'sub' => \&feature_blame,
 117                 'override' => 0,
 118                 'default' => [0]},
 119
 120         # Enable the 'snapshot' link, providing a compressed tarball of any
 121         # tree. This can potentially generate high traffic if you have large
 122         # project.
 123
 124         # To disable system wide have in $GITWEB_CONFIG
 125         # $feature{'snapshot'}{'default'} = [undef];
 126         # To have project specific config enable override in $GITWEB_CONFIG
 127         # $feature{'snapshot'}{'override'} = 1;
 128         # and in project config gitweb.snapshot = none|gzip|bzip2;
 129         'snapshot' => {
 130                 'sub' => \&feature_snapshot,
 131                 'override' => 0,
 132                 #         => [content-encoding, suffix, program]
 133                 'default' => ['x-gzip', 'gz', 'gzip']},
 134
 135         # Enable text search, which will list the commits which match author,
 136         # committer or commit text to a given string.  Enabled by default.
 137         'search' => {
 138                 'override' => 0,
 139                 'default' => [1]},
 140
 141         # Enable the pickaxe search, which will list the commits that modified
 142         # a given string in a file. This can be practical and quite faster
 143         # alternative to 'blame', but still potentially CPU-intensive.
 144
 145         # To enable system wide have in $GITWEB_CONFIG
 146         # $feature{'pickaxe'}{'default'} = [1];
 147         # To have project specific config enable override in $GITWEB_CONFIG
 148         # $feature{'pickaxe'}{'override'} = 1;
 149         # and in project config gitweb.pickaxe = 0|1;
 150         'pickaxe' => {
 151                 'sub' => \&feature_pickaxe,
 152                 'override' => 0,
 153                 'default' => [1]},
 154
 155         # Make gitweb use an alternative format of the URLs which can be
 156         # more readable and natural-looking: project name is embedded
 157         # directly in the path and the query string contains other
 158         # auxiliary information. All gitweb installations recognize
 159         # URL in either format; this configures in which formats gitweb
 160         # generates links.
 161
 162         # To enable system wide have in $GITWEB_CONFIG
 163         # $feature{'pathinfo'}{'default'} = [1];
 164         # Project specific override is not supported.
 165
 166         # Note that you will need to change the default location of CSS,
 167         # favicon, logo and possibly other files to an absolute URL. Also,
 168         # if gitweb.cgi serves as your indexfile, you will need to force
 169         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 170         'pathinfo' => {
 171                 'override' => 0,
 172                 'default' => [0]},
 173
 174         # Make gitweb consider projects in project root subdirectories
 175         # to be forks of existing projects. Given project $projname.git,
 176         # projects matching $projname/*.git will not be shown in the main
 177         # projects list, instead a '+' mark will be added to $projname
 178         # there and a 'forks' view will be enabled for the project, listing
 179         # all the forks. This feature is supported only if project list
 180         # is taken from a directory, not file.
 181
 182         # To enable system wide have in $GITWEB_CONFIG
 183         # $feature{'forks'}{'default'} = [1];
 184         # Project specific override is not supported.
 185         'forks' => {
 186                 'override' => 0,
 187                 'default' => [0]},
 188 );
 189
 190 sub gitweb_check_feature {
 191         my ($name) = @_;
 192         return unless exists $feature{$name};
 193         my ($sub, $override, @defaults) = (
 194                 $feature{$name}{'sub'},
 195                 $feature{$name}{'override'},
 196                 @{$feature{$name}{'default'}});
 197         if (!$override) { return @defaults; }
 198         if (!defined $sub) {
 199                 warn "feature $name is not overrideable";
 200                 return @defaults;
 201         }
 202         return $sub->(@defaults);
 203 }
 204
 205 sub feature_blame {
 206         my ($val) = git_get_project_config('blame', '--bool');
 207
 208         if ($val eq 'true') {
 209                 return 1;
 210         } elsif ($val eq 'false') {
 211                 return 0;
 212         }
 213
 214         return $_[0];
 215 }
 216
 217 sub feature_snapshot {
 218         my ($ctype, $suffix, $command) = @_;
 219
 220         my ($val) = git_get_project_config('snapshot');
 221
 222         if ($val eq 'gzip') {
 223                 return ('x-gzip', 'gz', 'gzip');
 224         } elsif ($val eq 'bzip2') {
 225                 return ('x-bzip2', 'bz2', 'bzip2');
 226         } elsif ($val eq 'none') {
 227                 return ();
 228         }
 229
 230         return ($ctype, $suffix, $command);
 231 }
 232
 233 sub gitweb_have_snapshot {
 234         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 235         my $have_snapshot = (defined $ctype && defined $suffix);
 236
 237         return $have_snapshot;
 238 }
 239
 240 sub feature_pickaxe {
 241         my ($val) = git_get_project_config('pickaxe', '--bool');
 242
 243         if ($val eq 'true') {
 244                 return (1);
 245         } elsif ($val eq 'false') {
 246                 return (0);
 247         }
 248
 249         return ($_[0]);
 250 }
 251
 252 # checking HEAD file with -e is fragile if the repository was
 253 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 254 # and then pruned.
 255 sub check_head_link {
 256         my ($dir) = @_;
 257         my $headfile = "$dir/HEAD";
 258         return ((-e $headfile) ||
 259                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 260 }
 261
 262 sub check_export_ok {
 263         my ($dir) = @_;
 264         return (check_head_link($dir) &&
 265                 (!$export_ok || -e "$dir/$export_ok"));
 266 }
 267
 268 # rename detection options for git-diff and git-diff-tree
 269 # - default is '-M', with the cost proportional to
 270 #   (number of removed files) * (number of new files).
 271 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 272 #   (number of changed files + number of removed files) * (number of new files)
 273 # - even more costly is '-C', '--find-copies-harder' with cost
 274 #   (number of files in the original tree) * (number of new files)
 275 # - one might want to include '-B' option, e.g. '-B', '-M'
 276 our @diff_opts = ('-M'); # taken from git_commit
 277
 278 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 279 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 280
 281 # version of the core git binary
 282 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 283
 284 $projects_list ||= $projectroot;
 285
 286 # ======================================================================
 287 # input validation and dispatch
 288 our $action = $cgi->param('a');
 289 if (defined $action) {
 290         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 291                 die_error(undef, "Invalid action parameter");
 292         }
 293 }
 294
 295 # parameters which are pathnames
 296 our $project = $cgi->param('p');
 297 if (defined $project) {
 298         if (!validate_pathname($project) ||
 299             !(-d "$projectroot/$project") ||
 300             !check_head_link("$projectroot/$project") ||
 301             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 302             ($strict_export && !project_in_list($project))) {
 303                 undef $project;
 304                 die_error(undef, "No such project");
 305         }
 306 }
 307
 308 our $file_name = $cgi->param('f');
 309 if (defined $file_name) {
 310         if (!validate_pathname($file_name)) {
 311                 die_error(undef, "Invalid file parameter");
 312         }
 313 }
 314
 315 our $file_parent = $cgi->param('fp');
 316 if (defined $file_parent) {
 317         if (!validate_pathname($file_parent)) {
 318                 die_error(undef, "Invalid file parent parameter");
 319         }
 320 }
 321
 322 # parameters which are refnames
 323 our $hash = $cgi->param('h');
 324 if (defined $hash) {
 325         if (!validate_refname($hash)) {
 326                 die_error(undef, "Invalid hash parameter");
 327         }
 328 }
 329
 330 our $hash_parent = $cgi->param('hp');
 331 if (defined $hash_parent) {
 332         if (!validate_refname($hash_parent)) {
 333                 die_error(undef, "Invalid hash parent parameter");
 334         }
 335 }
 336
 337 our $hash_base = $cgi->param('hb');
 338 if (defined $hash_base) {
 339         if (!validate_refname($hash_base)) {
 340                 die_error(undef, "Invalid hash base parameter");
 341         }
 342 }
 343
 344 our $hash_parent_base = $cgi->param('hpb');
 345 if (defined $hash_parent_base) {
 346         if (!validate_refname($hash_parent_base)) {
 347                 die_error(undef, "Invalid hash parent base parameter");
 348         }
 349 }
 350
 351 # other parameters
 352 our $page = $cgi->param('pg');
 353 if (defined $page) {
 354         if ($page =~ m/[^0-9]/) {
 355                 die_error(undef, "Invalid page parameter");
 356         }
 357 }
 358
 359 our $searchtext = $cgi->param('s');
 360 if (defined $searchtext) {
 361         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 362                 die_error(undef, "Invalid search parameter");
 363         }
 364         if (length($searchtext) < 2) {
 365                 die_error(undef, "At least two characters are required for search parameter");
 366         }
 367         $searchtext = quotemeta $searchtext;
 368 }
 369
 370 our $searchtype = $cgi->param('st');
 371 if (defined $searchtype) {
 372         if ($searchtype =~ m/[^a-z]/) {
 373                 die_error(undef, "Invalid searchtype parameter");
 374         }
 375 }
 376
 377 # now read PATH_INFO and use it as alternative to parameters
 378 sub evaluate_path_info {
 379         return if defined $project;
 380         my $path_info = $ENV{"PATH_INFO"};
 381         return if !$path_info;
 382         $path_info =~ s,^/+,,;
 383         return if !$path_info;
 384         # find which part of PATH_INFO is project
 385         $project = $path_info;
 386         $project =~ s,/+$,,;
 387         while ($project && !check_head_link("$projectroot/$project")) {
 388                 $project =~ s,/*[^/]*$,,;
 389         }
 390         # validate project
 391         $project = validate_pathname($project);
 392         if (!$project ||
 393             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 394             ($strict_export && !project_in_list($project))) {
 395                 undef $project;
 396                 return;
 397         }
 398         # do not change any parameters if an action is given using the query string
 399         return if $action;
 400         $path_info =~ s,^$project/*,,;
 401         my ($refname, $pathname) = split(/:/, $path_info, 2);
 402         if (defined $pathname) {
 403                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 404                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 405                 $pathname =~ s,^/+,,;
 406                 if (!$pathname || substr($pathname, -1) eq "/") {
 407                         $action  ||= "tree";
 408                         $pathname =~ s,/$,,;
 409                 } else {
 410                         $action  ||= "blob_plain";
 411                 }
 412                 $hash_base ||= validate_refname($refname);
 413                 $file_name ||= validate_pathname($pathname);
 414         } elsif (defined $refname) {
 415                 # we got "project.git/branch"
 416                 $action ||= "shortlog";
 417                 $hash   ||= validate_refname($refname);
 418         }
 419 }
 420 evaluate_path_info();
 421
 422 # path to the current git repository
 423 our $git_dir;
 424 $git_dir = "$projectroot/$project" if $project;
 425
 426 # dispatch
 427 my %actions = (
 428         "blame" => \&git_blame2,
 429         "blobdiff" => \&git_blobdiff,
 430         "blobdiff_plain" => \&git_blobdiff_plain,
 431         "blob" => \&git_blob,
 432         "blob_plain" => \&git_blob_plain,
 433         "commitdiff" => \&git_commitdiff,
 434         "commitdiff_plain" => \&git_commitdiff_plain,
 435         "commit" => \&git_commit,
 436         "forks" => \&git_forks,
 437         "heads" => \&git_heads,
 438         "history" => \&git_history,
 439         "log" => \&git_log,
 440         "rss" => \&git_rss,
 441         "atom" => \&git_atom,
 442         "search" => \&git_search,
 443         "search_help" => \&git_search_help,
 444         "shortlog" => \&git_shortlog,
 445         "summary" => \&git_summary,
 446         "tag" => \&git_tag,
 447         "tags" => \&git_tags,
 448         "tree" => \&git_tree,
 449         "snapshot" => \&git_snapshot,
 450         "object" => \&git_object,
 451         # those below don't need $project
 452         "opml" => \&git_opml,
 453         "project_list" => \&git_project_list,
 454         "project_index" => \&git_project_index,
 455 );
 456
 457 if (defined $project) {
 458         $action ||= 'summary';
 459 } else {
 460         $action ||= 'project_list';
 461 }
 462 if (!defined($actions{$action})) {
 463         die_error(undef, "Unknown action");
 464 }
 465 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 466     !$project) {
 467         die_error(undef, "Project needed");
 468 }
 469 $actions{$action}->();
 470 exit;
 471
 472 ## ======================================================================
 473 ## action links
 474
 475 sub href(%) {
 476         my %params = @_;
 477         # default is to use -absolute url() i.e. $my_uri
 478         my $href = $params{-full} ? $my_url : $my_uri;
 479
 480         # XXX: Warning: If you touch this, check the search form for updating,
 481         # too.
 482
 483         my @mapping = (
 484                 project => "p",
 485                 action => "a",
 486                 file_name => "f",
 487                 file_parent => "fp",
 488                 hash => "h",
 489                 hash_parent => "hp",
 490                 hash_base => "hb",
 491                 hash_parent_base => "hpb",
 492                 page => "pg",
 493                 order => "o",
 494                 searchtext => "s",
 495                 searchtype => "st",
 496         );
 497         my %mapping = @mapping;
 498
 499         $params{'project'} = $project unless exists $params{'project'};
 500
 501         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 502         if ($use_pathinfo) {
 503                 # use PATH_INFO for project name
 504                 $href .= "/$params{'project'}" if defined $params{'project'};
 505                 delete $params{'project'};
 506
 507                 # Summary just uses the project path URL
 508                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 509                         delete $params{'action'};
 510                 }
 511         }
 512
 513         # now encode the parameters explicitly
 514         my @result = ();
 515         for (my $i = 0; $i < @mapping; $i += 2) {
 516                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 517                 if (defined $params{$name}) {
 518                         push @result, $symbol . "=" . esc_param($params{$name});
 519                 }
 520         }
 521         $href .= "?" . join(';', @result) if scalar @result;
 522
 523         return $href;
 524 }
 525
 526
 527 ## ======================================================================
 528 ## validation, quoting/unquoting and escaping
 529
 530 sub validate_pathname {
 531         my $input = shift || return undef;
 532
 533         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 534         # at the beginning, at the end, and between slashes.
 535         # also this catches doubled slashes
 536         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 537                 return undef;
 538         }
 539         # no null characters
 540         if ($input =~ m!\0!) {
 541                 return undef;
 542         }
 543         return $input;
 544 }
 545
 546 sub validate_refname {
 547         my $input = shift || return undef;
 548
 549         # textual hashes are O.K.
 550         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 551                 return $input;
 552         }
 553         # it must be correct pathname
 554         $input = validate_pathname($input)
 555                 or return undef;
 556         # restrictions on ref name according to git-check-ref-format
 557         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 558                 return undef;
 559         }
 560         return $input;
 561 }
 562
 563 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 564 sub to_utf8 {
 565         my $str = shift;
 566         return decode("utf8", $str, Encode::FB_DEFAULT);
 567 }
 568
 569 # quote unsafe chars, but keep the slash, even when it's not
 570 # correct, but quoted slashes look too horrible in bookmarks
 571 sub esc_param {
 572         my $str = shift;
 573         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 574         $str =~ s/\+/%2B/g;
 575         $str =~ s/ /\+/g;
 576         return $str;
 577 }
 578
 579 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 580 sub esc_url {
 581         my $str = shift;
 582         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 583         $str =~ s/\+/%2B/g;
 584         $str =~ s/ /\+/g;
 585         return $str;
 586 }
 587
 588 # replace invalid utf8 character with SUBSTITUTION sequence
 589 sub esc_html ($;%) {
 590         my $str = shift;
 591         my %opts = @_;
 592
 593         $str = to_utf8($str);
 594         $str = escapeHTML($str);
 595         if ($opts{'-nbsp'}) {
 596                 $str =~ s/ /&nbsp;/g;
 597         }
 598         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 599         return $str;
 600 }
 601
 602 # quote control characters and escape filename to HTML
 603 sub esc_path {
 604         my $str = shift;
 605         my %opts = @_;
 606
 607         $str = to_utf8($str);
 608         $str = escapeHTML($str);
 609         if ($opts{'-nbsp'}) {
 610                 $str =~ s/ /&nbsp;/g;
 611         }
 612         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 613         return $str;
 614 }
 615
 616 # Make control characters "printable", using character escape codes (CEC)
 617 sub quot_cec {
 618         my $cntrl = shift;
 619         my %es = ( # character escape codes, aka escape sequences
 620                    "\t" => '\t',   # tab            (HT)
 621                    "\n" => '\n',   # line feed      (LF)
 622                    "\r" => '\r',   # carrige return (CR)
 623                    "\f" => '\f',   # form feed      (FF)
 624                    "\b" => '\b',   # backspace      (BS)
 625                    "\a" => '\a',   # alarm (bell)   (BEL)
 626                    "\e" => '\e',   # escape         (ESC)
 627                    "\013" => '\v', # vertical tab   (VT)
 628                    "\000" => '\0', # nul character  (NUL)
 629                    );
 630         my $chr = ( (exists $es{$cntrl})
 631                     ? $es{$cntrl}
 632                     : sprintf('\%03o', ord($cntrl)) );
 633         return "<span class=\"cntrl\">$chr</span>";
 634 }
 635
 636 # Alternatively use unicode control pictures codepoints,
 637 # Unicode "printable representation" (PR)
 638 sub quot_upr {
 639         my $cntrl = shift;
 640         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 641         return "<span class=\"cntrl\">$chr</span>";
 642 }
 643
 644 # git may return quoted and escaped filenames
 645 sub unquote {
 646         my $str = shift;
 647
 648         sub unq {
 649                 my $seq = shift;
 650                 my %es = ( # character escape codes, aka escape sequences
 651                         't' => "\t",   # tab            (HT, TAB)
 652                         'n' => "\n",   # newline        (NL)
 653                         'r' => "\r",   # return         (CR)
 654                         'f' => "\f",   # form feed      (FF)
 655                         'b' => "\b",   # backspace      (BS)
 656                         'a' => "\a",   # alarm (bell)   (BEL)
 657                         'e' => "\e",   # escape         (ESC)
 658                         'v' => "\013", # vertical tab   (VT)
 659                 );
 660
 661                 if ($seq =~ m/^[0-7]{1,3}$/) {
 662                         # octal char sequence
 663                         return chr(oct($seq));
 664                 } elsif (exists $es{$seq}) {
 665                         # C escape sequence, aka character escape code
 666                         return $es{$seq}
 667                 }
 668                 # quoted ordinary character
 669                 return $seq;
 670         }
 671
 672         if ($str =~ m/^"(.*)"$/) {
 673                 # needs unquoting
 674                 $str = $1;
 675                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 676         }
 677         return $str;
 678 }
 679
 680 # escape tabs (convert tabs to spaces)
 681 sub untabify {
 682         my $line = shift;
 683
 684         while ((my $pos = index($line, "\t")) != -1) {
 685                 if (my $count = (8 - ($pos % 8))) {
 686                         my $spaces = ' ' x $count;
 687                         $line =~ s/\t/$spaces/;
 688                 }
 689         }
 690
 691         return $line;
 692 }
 693
 694 sub project_in_list {
 695         my $project = shift;
 696         my @list = git_get_projects_list();
 697         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 698 }
 699
 700 ## ----------------------------------------------------------------------
 701 ## HTML aware string manipulation
 702
 703 sub chop_str {
 704         my $str = shift;
 705         my $len = shift;
 706         my $add_len = shift || 10;
 707
 708         # allow only $len chars, but don't cut a word if it would fit in $add_len
 709         # if it doesn't fit, cut it if it's still longer than the dots we would add
 710         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 711         my $body = $1;
 712         my $tail = $2;
 713         if (length($tail) > 4) {
 714                 $tail = " ...";
 715                 $body =~ s/&[^;]*$//; # remove chopped character entities
 716         }
 717         return "$body$tail";
 718 }
 719
 720 ## ----------------------------------------------------------------------
 721 ## functions returning short strings
 722
 723 # CSS class for given age value (in seconds)
 724 sub age_class {
 725         my $age = shift;
 726
 727         if ($age < 60*60*2) {
 728                 return "age0";
 729         } elsif ($age < 60*60*24*2) {
 730                 return "age1";
 731         } else {
 732                 return "age2";
 733         }
 734 }
 735
 736 # convert age in seconds to "nn units ago" string
 737 sub age_string {
 738         my $age = shift;
 739         my $age_str;
 740
 741         if ($age > 60*60*24*365*2) {
 742                 $age_str = (int $age/60/60/24/365);
 743                 $age_str .= " years ago";
 744         } elsif ($age > 60*60*24*(365/12)*2) {
 745                 $age_str = int $age/60/60/24/(365/12);
 746                 $age_str .= " months ago";
 747         } elsif ($age > 60*60*24*7*2) {
 748                 $age_str = int $age/60/60/24/7;
 749                 $age_str .= " weeks ago";
 750         } elsif ($age > 60*60*24*2) {
 751                 $age_str = int $age/60/60/24;
 752                 $age_str .= " days ago";
 753         } elsif ($age > 60*60*2) {
 754                 $age_str = int $age/60/60;
 755                 $age_str .= " hours ago";
 756         } elsif ($age > 60*2) {
 757                 $age_str = int $age/60;
 758                 $age_str .= " min ago";
 759         } elsif ($age > 2) {
 760                 $age_str = int $age;
 761                 $age_str .= " sec ago";
 762         } else {
 763                 $age_str .= " right now";
 764         }
 765         return $age_str;
 766 }
 767
 768 # convert file mode in octal to symbolic file mode string
 769 sub mode_str {
 770         my $mode = oct shift;
 771
 772         if (S_ISDIR($mode & S_IFMT)) {
 773                 return 'drwxr-xr-x';
 774         } elsif (S_ISLNK($mode)) {
 775                 return 'lrwxrwxrwx';
 776         } elsif (S_ISREG($mode)) {
 777                 # git cares only about the executable bit
 778                 if ($mode & S_IXUSR) {
 779                         return '-rwxr-xr-x';
 780                 } else {
 781                         return '-rw-r--r--';
 782                 };
 783         } else {
 784                 return '----------';
 785         }
 786 }
 787
 788 # convert file mode in octal to file type string
 789 sub file_type {
 790         my $mode = shift;
 791
 792         if ($mode !~ m/^[0-7]+$/) {
 793                 return $mode;
 794         } else {
 795                 $mode = oct $mode;
 796         }
 797
 798         if (S_ISDIR($mode & S_IFMT)) {
 799                 return "directory";
 800         } elsif (S_ISLNK($mode)) {
 801                 return "symlink";
 802         } elsif (S_ISREG($mode)) {
 803                 return "file";
 804         } else {
 805                 return "unknown";
 806         }
 807 }
 808
 809 # convert file mode in octal to file type description string
 810 sub file_type_long {
 811         my $mode = shift;
 812
 813         if ($mode !~ m/^[0-7]+$/) {
 814                 return $mode;
 815         } else {
 816                 $mode = oct $mode;
 817         }
 818
 819         if (S_ISDIR($mode & S_IFMT)) {
 820                 return "directory";
 821         } elsif (S_ISLNK($mode)) {
 822                 return "symlink";
 823         } elsif (S_ISREG($mode)) {
 824                 if ($mode & S_IXUSR) {
 825                         return "executable";
 826                 } else {
 827                         return "file";
 828                 };
 829         } else {
 830                 return "unknown";
 831         }
 832 }
 833
 834
 835 ## ----------------------------------------------------------------------
 836 ## functions returning short HTML fragments, or transforming HTML fragments
 837 ## which don't belong to other sections
 838
 839 # format line of commit message.
 840 sub format_log_line_html {
 841         my $line = shift;
 842
 843         $line = esc_html($line, -nbsp=>1);
 844         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 845                 my $hash_text = $1;
 846                 my $link =
 847                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 848                                 -class => "text"}, $hash_text);
 849                 $line =~ s/$hash_text/$link/;
 850         }
 851         return $line;
 852 }
 853
 854 # format marker of refs pointing to given object
 855 sub format_ref_marker {
 856         my ($refs, $id) = @_;
 857         my $markers = '';
 858
 859         if (defined $refs->{$id}) {
 860                 foreach my $ref (@{$refs->{$id}}) {
 861                         my ($type, $name) = qw();
 862                         # e.g. tags/v2.6.11 or heads/next
 863                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 864                                 $type = $1;
 865                                 $name = $2;
 866                         } else {
 867                                 $type = "ref";
 868                                 $name = $ref;
 869                         }
 870
 871                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 872                                     esc_html($name) . "</span>";
 873                 }
 874         }
 875
 876         if ($markers) {
 877                 return ' <span class="refs">'. $markers . '</span>';
 878         } else {
 879                 return "";
 880         }
 881 }
 882
 883 # format, perhaps shortened and with markers, title line
 884 sub format_subject_html {
 885         my ($long, $short, $href, $extra) = @_;
 886         $extra = '' unless defined($extra);
 887
 888         if (length($short) < length($long)) {
 889                 return $cgi->a({-href => $href, -class => "list subject",
 890                                 -title => to_utf8($long)},
 891                        esc_html($short) . $extra);
 892         } else {
 893                 return $cgi->a({-href => $href, -class => "list subject"},
 894                        esc_html($long)  . $extra);
 895         }
 896 }
 897
 898 # format patch (diff) line (rather not to be used for diff headers)
 899 sub format_diff_line {
 900         my $line = shift;
 901         my ($from, $to) = @_;
 902         my $char = substr($line, 0, 1);
 903         my $diff_class = "";
 904
 905         chomp $line;
 906
 907         if ($char eq '+') {
 908                 $diff_class = " add";
 909         } elsif ($char eq "-") {
 910                 $diff_class = " rem";
 911         } elsif ($char eq "@") {
 912                 $diff_class = " chunk_header";
 913         } elsif ($char eq "\\") {
 914                 $diff_class = " incomplete";
 915         }
 916         $line = untabify($line);
 917         if ($from && $to && $line =~ m/^\@{2} /) {
 918                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 919                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 920
 921                 $from_lines = 0 unless defined $from_lines;
 922                 $to_lines   = 0 unless defined $to_lines;
 923
 924                 if ($from->{'href'}) {
 925                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 926                                              -class=>"list"}, $from_text);
 927                 }
 928                 if ($to->{'href'}) {
 929                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 930                                              -class=>"list"}, $to_text);
 931                 }
 932                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 933                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 934                 return "<div class=\"diff$diff_class\">$line</div>\n";
 935         }
 936         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 937 }
 938
 939 ## ----------------------------------------------------------------------
 940 ## git utility subroutines, invoking git commands
 941
 942 # returns path to the core git executable and the --git-dir parameter as list
 943 sub git_cmd {
 944         return $GIT, '--git-dir='.$git_dir;
 945 }
 946
 947 # returns path to the core git executable and the --git-dir parameter as string
 948 sub git_cmd_str {
 949         return join(' ', git_cmd());
 950 }
 951
 952 # get HEAD ref of given project as hash
 953 sub git_get_head_hash {
 954         my $project = shift;
 955         my $o_git_dir = $git_dir;
 956         my $retval = undef;
 957         $git_dir = "$projectroot/$project";
 958         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 959                 my $head = <$fd>;
 960                 close $fd;
 961                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 962                         $retval = $1;
 963                 }
 964         }
 965         if (defined $o_git_dir) {
 966                 $git_dir = $o_git_dir;
 967         }
 968         return $retval;
 969 }
 970
 971 # get type of given object
 972 sub git_get_type {
 973         my $hash = shift;
 974
 975         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 976         my $type = <$fd>;
 977         close $fd or return;
 978         chomp $type;
 979         return $type;
 980 }
 981
 982 sub git_get_project_config {
 983         my ($key, $type) = @_;
 984
 985         return unless ($key);
 986         $key =~ s/^gitweb\.//;
 987         return if ($key =~ m/\W/);
 988
 989         my @x = (git_cmd(), 'config');
 990         if (defined $type) { push @x, $type; }
 991         push @x, "--get";
 992         push @x, "gitweb.$key";
 993         my $val = qx(@x);
 994         chomp $val;
 995         return ($val);
 996 }
 997
 998 # get hash of given path at given ref
 999 sub git_get_hash_by_path {
1000         my $base = shift;
1001         my $path = shift || return undef;
1002         my $type = shift;
1003
1004         $path =~ s,/+$,,;
1005
1006         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1007                 or die_error(undef, "Open git-ls-tree failed");
1008         my $line = <$fd>;
1009         close $fd or return undef;
1010
1011         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1012         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1013         if (defined $type && $type ne $2) {
1014                 # type doesn't match
1015                 return undef;
1016         }
1017         return $3;
1018 }
1019
1020 ## ......................................................................
1021 ## git utility functions, directly accessing git repository
1022
1023 sub git_get_project_description {
1024         my $path = shift;
1025
1026         open my $fd, "$projectroot/$path/description" or return undef;
1027         my $descr = <$fd>;
1028         close $fd;
1029         chomp $descr;
1030         return $descr;
1031 }
1032
1033 sub git_get_project_url_list {
1034         my $path = shift;
1035
1036         open my $fd, "$projectroot/$path/cloneurl" or return;
1037         my @git_project_url_list = map { chomp; $_ } <$fd>;
1038         close $fd;
1039
1040         return wantarray ? @git_project_url_list : \@git_project_url_list;
1041 }
1042
1043 sub git_get_projects_list {
1044         my ($filter) = @_;
1045         my @list;
1046
1047         $filter ||= '';
1048         $filter =~ s/\.git$//;
1049
1050         if (-d $projects_list) {
1051                 # search in directory
1052                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1053                 # remove the trailing "/"
1054                 $dir =~ s!/+$!!;
1055                 my $pfxlen = length("$dir");
1056
1057                 my ($check_forks) = gitweb_check_feature('forks');
1058
1059                 File::Find::find({
1060                         follow_fast => 1, # follow symbolic links
1061                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1062                         wanted => sub {
1063                                 # skip project-list toplevel, if we get it.
1064                                 return if (m!^[/.]$!);
1065                                 # only directories can be git repositories
1066                                 return unless (-d $_);
1067
1068                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1069                                 # we check related file in $projectroot
1070                                 if ($check_forks and $subdir =~ m#/.#) {
1071                                         $File::Find::prune = 1;
1072                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1073                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1074                                         $File::Find::prune = 1;
1075                                 }
1076                         },
1077                 }, "$dir");
1078
1079         } elsif (-f $projects_list) {
1080                 # read from file(url-encoded):
1081                 # 'git%2Fgit.git Linus+Torvalds'
1082                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1083                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1084                 open my ($fd), $projects_list or return;
1085                 while (my $line = <$fd>) {
1086                         chomp $line;
1087                         my ($path, $owner) = split ' ', $line;
1088                         $path = unescape($path);
1089                         $owner = unescape($owner);
1090                         if (!defined $path) {
1091                                 next;
1092                         }
1093                         if ($filter ne '') {
1094                                 # looking for forks;
1095                                 my $pfx = substr($path, 0, length($filter));
1096                                 if ($pfx ne $filter) {
1097                                         next;
1098                                 }
1099                                 my $sfx = substr($path, length($filter));
1100                                 if ($sfx !~ /^\/.*\.git$/) {
1101                                         next;
1102                                 }
1103                         }
1104                         if (check_export_ok("$projectroot/$path")) {
1105                                 my $pr = {
1106                                         path => $path,
1107                                         owner => to_utf8($owner),
1108                                 };
1109                                 push @list, $pr
1110                         }
1111                 }
1112                 close $fd;
1113         }
1114         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1115         return @list;
1116 }
1117
1118 sub git_get_project_owner {
1119         my $project = shift;
1120         my $owner;
1121
1122         return undef unless $project;
1123
1124         # read from file (url-encoded):
1125         # 'git%2Fgit.git Linus+Torvalds'
1126         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1127         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1128         if (-f $projects_list) {
1129                 open (my $fd , $projects_list);
1130                 while (my $line = <$fd>) {
1131                         chomp $line;
1132                         my ($pr, $ow) = split ' ', $line;
1133                         $pr = unescape($pr);
1134                         $ow = unescape($ow);
1135                         if ($pr eq $project) {
1136                                 $owner = to_utf8($ow);
1137                                 last;
1138                         }
1139                 }
1140                 close $fd;
1141         }
1142         if (!defined $owner) {
1143                 $owner = get_file_owner("$projectroot/$project");
1144         }
1145
1146         return $owner;
1147 }
1148
1149 sub git_get_last_activity {
1150         my ($path) = @_;
1151         my $fd;
1152
1153         $git_dir = "$projectroot/$path";
1154         open($fd, "-|", git_cmd(), 'for-each-ref',
1155              '--format=%(committer)',
1156              '--sort=-committerdate',
1157              '--count=1',
1158              'refs/heads') or return;
1159         my $most_recent = <$fd>;
1160         close $fd or return;
1161         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1162                 my $timestamp = $1;
1163                 my $age = time - $timestamp;
1164                 return ($age, age_string($age));
1165         }
1166 }
1167
1168 sub git_get_references {
1169         my $type = shift || "";
1170         my %refs;
1171         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1172         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1173         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1174                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1175                 or return;
1176
1177         while (my $line = <$fd>) {
1178                 chomp $line;
1179                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1180                         if (defined $refs{$1}) {
1181                                 push @{$refs{$1}}, $2;
1182                         } else {
1183                                 $refs{$1} = [ $2 ];
1184                         }
1185                 }
1186         }
1187         close $fd or return;
1188         return \%refs;
1189 }
1190
1191 sub git_get_rev_name_tags {
1192         my $hash = shift || return undef;
1193
1194         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1195                 or return;
1196         my $name_rev = <$fd>;
1197         close $fd;
1198
1199         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1200                 return $1;
1201         } else {
1202                 # catches also '$hash undefined' output
1203                 return undef;
1204         }
1205 }
1206
1207 ## ----------------------------------------------------------------------
1208 ## parse to hash functions
1209
1210 sub parse_date {
1211         my $epoch = shift;
1212         my $tz = shift || "-0000";
1213
1214         my %date;
1215         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1216         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1217         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1218         $date{'hour'} = $hour;
1219         $date{'minute'} = $min;
1220         $date{'mday'} = $mday;
1221         $date{'day'} = $days[$wday];
1222         $date{'month'} = $months[$mon];
1223         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1224                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1225         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1226                              $mday, $months[$mon], $hour ,$min;
1227         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1228                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1229
1230         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1231         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1232         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1233         $date{'hour_local'} = $hour;
1234         $date{'minute_local'} = $min;
1235         $date{'tz_local'} = $tz;
1236         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1237                                   1900+$year, $mon+1, $mday,
1238                                   $hour, $min, $sec, $tz);
1239         return %date;
1240 }
1241
1242 sub parse_tag {
1243         my $tag_id = shift;
1244         my %tag;
1245         my @comment;
1246
1247         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1248         $tag{'id'} = $tag_id;
1249         while (my $line = <$fd>) {
1250                 chomp $line;
1251                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1252                         $tag{'object'} = $1;
1253                 } elsif ($line =~ m/^type (.+)$/) {
1254                         $tag{'type'} = $1;
1255                 } elsif ($line =~ m/^tag (.+)$/) {
1256                         $tag{'name'} = $1;
1257                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1258                         $tag{'author'} = $1;
1259                         $tag{'epoch'} = $2;
1260                         $tag{'tz'} = $3;
1261                 } elsif ($line =~ m/--BEGIN/) {
1262                         push @comment, $line;
1263                         last;
1264                 } elsif ($line eq "") {
1265                         last;
1266                 }
1267         }
1268         push @comment, <$fd>;
1269         $tag{'comment'} = \@comment;
1270         close $fd or return;
1271         if (!defined $tag{'name'}) {
1272                 return
1273         };
1274         return %tag
1275 }
1276
1277 sub parse_commit_text {
1278         my ($commit_text, $withparents) = @_;
1279         my @commit_lines = split '\n', $commit_text;
1280         my %co;
1281
1282         pop @commit_lines; # Remove '\0'
1283
1284         my $header = shift @commit_lines;
1285         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1286                 return;
1287         }
1288         ($co{'id'}, my @parents) = split ' ', $header;
1289         while (my $line = shift @commit_lines) {
1290                 last if $line eq "\n";
1291                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1292                         $co{'tree'} = $1;
1293                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1294                         push @parents, $1;
1295                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1296                         $co{'author'} = $1;
1297                         $co{'author_epoch'} = $2;
1298                         $co{'author_tz'} = $3;
1299                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1300                                 $co{'author_name'}  = $1;
1301                                 $co{'author_email'} = $2;
1302                         } else {
1303                                 $co{'author_name'} = $co{'author'};
1304                         }
1305                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1306                         $co{'committer'} = $1;
1307                         $co{'committer_epoch'} = $2;
1308                         $co{'committer_tz'} = $3;
1309                         $co{'committer_name'} = $co{'committer'};
1310                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1311                                 $co{'committer_name'}  = $1;
1312                                 $co{'committer_email'} = $2;
1313                         } else {
1314                                 $co{'committer_name'} = $co{'committer'};
1315                         }
1316                 }
1317         }
1318         if (!defined $co{'tree'}) {
1319                 return;
1320         };
1321         $co{'parents'} = \@parents;
1322         $co{'parent'} = $parents[0];
1323
1324         foreach my $title (@commit_lines) {
1325                 $title =~ s/^    //;
1326                 if ($title ne "") {
1327                         $co{'title'} = chop_str($title, 80, 5);
1328                         # remove leading stuff of merges to make the interesting part visible
1329                         if (length($title) > 50) {
1330                                 $title =~ s/^Automatic //;
1331                                 $title =~ s/^merge (of|with) /Merge ... /i;
1332                                 if (length($title) > 50) {
1333                                         $title =~ s/(http|rsync):\/\///;
1334                                 }
1335                                 if (length($title) > 50) {
1336                                         $title =~ s/(master|www|rsync)\.//;
1337                                 }
1338                                 if (length($title) > 50) {
1339                                         $title =~ s/kernel.org:?//;
1340                                 }
1341                                 if (length($title) > 50) {
1342                                         $title =~ s/\/pub\/scm//;
1343                                 }
1344                         }
1345                         $co{'title_short'} = chop_str($title, 50, 5);
1346                         last;
1347                 }
1348         }
1349         if ($co{'title'} eq "") {
1350                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1351         }
1352         # remove added spaces
1353         foreach my $line (@commit_lines) {
1354                 $line =~ s/^    //;
1355         }
1356         $co{'comment'} = \@commit_lines;
1357
1358         my $age = time - $co{'committer_epoch'};
1359         $co{'age'} = $age;
1360         $co{'age_string'} = age_string($age);
1361         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1362         if ($age > 60*60*24*7*2) {
1363                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1364                 $co{'age_string_age'} = $co{'age_string'};
1365         } else {
1366                 $co{'age_string_date'} = $co{'age_string'};
1367                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1368         }
1369         return %co;
1370 }
1371
1372 sub parse_commit {
1373         my ($commit_id) = @_;
1374         my %co;
1375
1376         local $/ = "\0";
1377
1378         open my $fd, "-|", git_cmd(), "rev-list",
1379                 "--parents",
1380                 "--header",
1381                 "--max-count=1",
1382                 $commit_id,
1383                 "--",
1384                 or die_error(undef, "Open git-rev-list failed");
1385         %co = parse_commit_text(<$fd>, 1);
1386         close $fd;
1387
1388         return %co;
1389 }
1390
1391 sub parse_commits {
1392         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1393         my @cos;
1394
1395         $maxcount ||= 1;
1396         $skip ||= 0;
1397
1398         local $/ = "\0";
1399
1400         open my $fd, "-|", git_cmd(), "rev-list",
1401                 "--header",
1402                 ($arg ? ($arg) : ()),
1403                 ("--max-count=" . $maxcount),
1404                 ("--skip=" . $skip),
1405                 $commit_id,
1406                 "--",
1407                 ($filename ? ($filename) : ())
1408                 or die_error(undef, "Open git-rev-list failed");
1409         while (my $line = <$fd>) {
1410                 my %co = parse_commit_text($line);
1411                 push @cos, \%co;
1412         }
1413         close $fd;
1414
1415         return wantarray ? @cos : \@cos;
1416 }
1417
1418 # parse ref from ref_file, given by ref_id, with given type
1419 sub parse_ref {
1420         my $ref_file = shift;
1421         my $ref_id = shift;
1422         my $type = shift || git_get_type($ref_id);
1423         my %ref_item;
1424
1425         $ref_item{'type'} = $type;
1426         $ref_item{'id'} = $ref_id;
1427         $ref_item{'epoch'} = 0;
1428         $ref_item{'age'} = "unknown";
1429         if ($type eq "tag") {
1430                 my %tag = parse_tag($ref_id);
1431                 $ref_item{'comment'} = $tag{'comment'};
1432                 if ($tag{'type'} eq "commit") {
1433                         my %co = parse_commit($tag{'object'});
1434                         $ref_item{'epoch'} = $co{'committer_epoch'};
1435                         $ref_item{'age'} = $co{'age_string'};
1436                 } elsif (defined($tag{'epoch'})) {
1437                         my $age = time - $tag{'epoch'};
1438                         $ref_item{'epoch'} = $tag{'epoch'};
1439                         $ref_item{'age'} = age_string($age);
1440                 }
1441                 $ref_item{'reftype'} = $tag{'type'};
1442                 $ref_item{'name'} = $tag{'name'};
1443                 $ref_item{'refid'} = $tag{'object'};
1444         } elsif ($type eq "commit"){
1445                 my %co = parse_commit($ref_id);
1446                 $ref_item{'reftype'} = "commit";
1447                 $ref_item{'name'} = $ref_file;
1448                 $ref_item{'title'} = $co{'title'};
1449                 $ref_item{'refid'} = $ref_id;
1450                 $ref_item{'epoch'} = $co{'committer_epoch'};
1451                 $ref_item{'age'} = $co{'age_string'};
1452         } else {
1453                 $ref_item{'reftype'} = $type;
1454                 $ref_item{'name'} = $ref_file;
1455                 $ref_item{'refid'} = $ref_id;
1456         }
1457
1458         return %ref_item;
1459 }
1460
1461 # parse line of git-diff-tree "raw" output
1462 sub parse_difftree_raw_line {
1463         my $line = shift;
1464         my %res;
1465
1466         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1467         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1468         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1469                 $res{'from_mode'} = $1;
1470                 $res{'to_mode'} = $2;
1471                 $res{'from_id'} = $3;
1472                 $res{'to_id'} = $4;
1473                 $res{'status'} = $5;
1474                 $res{'similarity'} = $6;
1475                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1476                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1477                 } else {
1478                         $res{'file'} = unquote($7);
1479                 }
1480         }
1481         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1482         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1483                 $res{'commit'} = $1;
1484         }
1485
1486         return wantarray ? %res : \%res;
1487 }
1488
1489 # parse line of git-ls-tree output
1490 sub parse_ls_tree_line ($;%) {
1491         my $line = shift;
1492         my %opts = @_;
1493         my %res;
1494
1495         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1496         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1497
1498         $res{'mode'} = $1;
1499         $res{'type'} = $2;
1500         $res{'hash'} = $3;
1501         if ($opts{'-z'}) {
1502                 $res{'name'} = $4;
1503         } else {
1504                 $res{'name'} = unquote($4);
1505         }
1506
1507         return wantarray ? %res : \%res;
1508 }
1509
1510 ## ......................................................................
1511 ## parse to array of hashes functions
1512
1513 sub git_get_heads_list {
1514         my $limit = shift;
1515         my @headslist;
1516
1517         open my $fd, '-|', git_cmd(), 'for-each-ref',
1518                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1519                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1520                 'refs/heads'
1521                 or return;
1522         while (my $line = <$fd>) {
1523                 my %ref_item;
1524
1525                 chomp $line;
1526                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1527                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1528                 my ($committer, $epoch, $tz) =
1529                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1530                 $name =~ s!^refs/heads/!!;
1531
1532                 $ref_item{'name'}  = $name;
1533                 $ref_item{'id'}    = $hash;
1534                 $ref_item{'title'} = $title || '(no commit message)';
1535                 $ref_item{'epoch'} = $epoch;
1536                 if ($epoch) {
1537                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1538                 } else {
1539                         $ref_item{'age'} = "unknown";
1540                 }
1541
1542                 push @headslist, \%ref_item;
1543         }
1544         close $fd;
1545
1546         return wantarray ? @headslist : \@headslist;
1547 }
1548
1549 sub git_get_tags_list {
1550         my $limit = shift;
1551         my @tagslist;
1552
1553         open my $fd, '-|', git_cmd(), 'for-each-ref',
1554                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1555                 '--format=%(objectname) %(objecttype) %(refname) '.
1556                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1557                 'refs/tags'
1558                 or return;
1559         while (my $line = <$fd>) {
1560                 my %ref_item;
1561
1562                 chomp $line;
1563                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1564                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1565                 my ($creator, $epoch, $tz) =
1566                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1567                 $name =~ s!^refs/tags/!!;
1568
1569                 $ref_item{'type'} = $type;
1570                 $ref_item{'id'} = $id;
1571                 $ref_item{'name'} = $name;
1572                 if ($type eq "tag") {
1573                         $ref_item{'subject'} = $title;
1574                         $ref_item{'reftype'} = $reftype;
1575                         $ref_item{'refid'}   = $refid;
1576                 } else {
1577                         $ref_item{'reftype'} = $type;
1578                         $ref_item{'refid'}   = $id;
1579                 }
1580
1581                 if ($type eq "tag" || $type eq "commit") {
1582                         $ref_item{'epoch'} = $epoch;
1583                         if ($epoch) {
1584                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1585                         } else {
1586                                 $ref_item{'age'} = "unknown";
1587                         }
1588                 }
1589
1590                 push @tagslist, \%ref_item;
1591         }
1592         close $fd;
1593
1594         return wantarray ? @tagslist : \@tagslist;
1595 }
1596
1597 ## ----------------------------------------------------------------------
1598 ## filesystem-related functions
1599
1600 sub get_file_owner {
1601         my $path = shift;
1602
1603         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1604         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1605         if (!defined $gcos) {
1606                 return undef;
1607         }
1608         my $owner = $gcos;
1609         $owner =~ s/[,;].*$//;
1610         return to_utf8($owner);
1611 }
1612
1613 ## ......................................................................
1614 ## mimetype related functions
1615
1616 sub mimetype_guess_file {
1617         my $filename = shift;
1618         my $mimemap = shift;
1619         -r $mimemap or return undef;
1620
1621         my %mimemap;
1622         open(MIME, $mimemap) or return undef;
1623         while (<MIME>) {
1624                 next if m/^#/; # skip comments
1625                 my ($mime, $exts) = split(/\t+/);
1626                 if (defined $exts) {
1627                         my @exts = split(/\s+/, $exts);
1628                         foreach my $ext (@exts) {
1629                                 $mimemap{$ext} = $mime;
1630                         }
1631                 }
1632         }
1633         close(MIME);
1634
1635         $filename =~ /\.([^.]*)$/;
1636         return $mimemap{$1};
1637 }
1638
1639 sub mimetype_guess {
1640         my $filename = shift;
1641         my $mime;
1642         $filename =~ /\./ or return undef;
1643
1644         if ($mimetypes_file) {
1645                 my $file = $mimetypes_file;
1646                 if ($file !~ m!^/!) { # if it is relative path
1647                         # it is relative to project
1648                         $file = "$projectroot/$project/$file";
1649                 }
1650                 $mime = mimetype_guess_file($filename, $file);
1651         }
1652         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1653         return $mime;
1654 }
1655
1656 sub blob_mimetype {
1657         my $fd = shift;
1658         my $filename = shift;
1659
1660         if ($filename) {
1661                 my $mime = mimetype_guess($filename);
1662                 $mime and return $mime;
1663         }
1664
1665         # just in case
1666         return $default_blob_plain_mimetype unless $fd;
1667
1668         if (-T $fd) {
1669                 return 'text/plain' .
1670                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1671         } elsif (! $filename) {
1672                 return 'application/octet-stream';
1673         } elsif ($filename =~ m/\.png$/i) {
1674                 return 'image/png';
1675         } elsif ($filename =~ m/\.gif$/i) {
1676                 return 'image/gif';
1677         } elsif ($filename =~ m/\.jpe?g$/i) {
1678                 return 'image/jpeg';
1679         } else {
1680                 return 'application/octet-stream';
1681         }
1682 }
1683
1684 ## ======================================================================
1685 ## functions printing HTML: header, footer, error page
1686
1687 sub git_header_html {
1688         my $status = shift || "200 OK";
1689         my $expires = shift;
1690
1691         my $title = "$site_name";
1692         if (defined $project) {
1693                 $title .= " - " . to_utf8($project);
1694                 if (defined $action) {
1695                         $title .= "/$action";
1696                         if (defined $file_name) {
1697                                 $title .= " - " . esc_path($file_name);
1698                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1699                                         $title .= "/";
1700                                 }
1701                         }
1702                 }
1703         }
1704         my $content_type;
1705         # require explicit support from the UA if we are to send the page as
1706         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1707         # we have to do this because MSIE sometimes globs '*/*', pretending to
1708         # support xhtml+xml but choking when it gets what it asked for.
1709         if (defined $cgi->http('HTTP_ACCEPT') &&
1710             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1711             $cgi->Accept('application/xhtml+xml') != 0) {
1712                 $content_type = 'application/xhtml+xml';
1713         } else {
1714                 $content_type = 'text/html';
1715         }
1716         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1717                            -status=> $status, -expires => $expires);
1718         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1719         print <<EOF;
1720 <?xml version="1.0" encoding="utf-8"?>
1721 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1722 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1723 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1724 <!-- git core binaries version $git_version -->
1725 <head>
1726 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1727 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1728 <meta name="robots" content="index, nofollow"/>
1729 <title>$title</title>
1730 EOF
1731 # print out each stylesheet that exist
1732         if (defined $stylesheet) {
1733 #provides backwards capability for those people who define style sheet in a config file
1734                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1735         } else {
1736                 foreach my $stylesheet (@stylesheets) {
1737                         next unless $stylesheet;
1738                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1739                 }
1740         }
1741         if (defined $project) {
1742                 printf('<link rel="alternate" title="%s log RSS feed" '.
1743                        'href="%s" type="application/rss+xml" />'."\n",
1744                        esc_param($project), href(action=>"rss"));
1745                 printf('<link rel="alternate" title="%s log Atom feed" '.
1746                        'href="%s" type="application/atom+xml" />'."\n",
1747                        esc_param($project), href(action=>"atom"));
1748         } else {
1749                 printf('<link rel="alternate" title="%s projects list" '.
1750                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1751                        $site_name, href(project=>undef, action=>"project_index"));
1752                 printf('<link rel="alternate" title="%s projects feeds" '.
1753                        'href="%s" type="text/x-opml"/>'."\n",
1754                        $site_name, href(project=>undef, action=>"opml"));
1755         }
1756         if (defined $favicon) {
1757                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1758         }
1759
1760         print "</head>\n" .
1761               "<body>\n";
1762
1763         if (-f $site_header) {
1764                 open (my $fd, $site_header);
1765                 print <$fd>;
1766                 close $fd;
1767         }
1768
1769         print "<div class=\"page_header\">\n" .
1770               $cgi->a({-href => esc_url($logo_url),
1771                        -title => $logo_label},
1772                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1773         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1774         if (defined $project) {
1775                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1776                 if (defined $action) {
1777                         print " / $action";
1778                 }
1779                 print "\n";
1780         }
1781         my ($have_search) = gitweb_check_feature('search');
1782         if ((defined $project) && ($have_search)) {
1783                 if (!defined $searchtext) {
1784                         $searchtext = "";
1785                 }
1786                 my $search_hash;
1787                 if (defined $hash_base) {
1788                         $search_hash = $hash_base;
1789                 } elsif (defined $hash) {
1790                         $search_hash = $hash;
1791                 } else {
1792                         $search_hash = "HEAD";
1793                 }
1794                 $cgi->param("a", "search");
1795                 $cgi->param("h", $search_hash);
1796                 $cgi->param("p", $project);
1797                 print $cgi->startform(-method => "get", -action => $my_uri) .
1798                       "<div class=\"search\">\n" .
1799                       $cgi->hidden(-name => "p") . "\n" .
1800                       $cgi->hidden(-name => "a") . "\n" .
1801                       $cgi->hidden(-name => "h") . "\n" .
1802                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1803                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1804                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1805                       " search:\n",
1806                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1807                       "</div>" .
1808                       $cgi->end_form() . "\n";
1809         }
1810         print "</div>\n";
1811 }
1812
1813 sub git_footer_html {
1814         print "<div class=\"page_footer\">\n";
1815         if (defined $project) {
1816                 my $descr = git_get_project_description($project);
1817                 if (defined $descr) {
1818                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1819                 }
1820                 print $cgi->a({-href => href(action=>"rss"),
1821                               -class => "rss_logo"}, "RSS") . " ";
1822                 print $cgi->a({-href => href(action=>"atom"),
1823                               -class => "rss_logo"}, "Atom") . "\n";
1824         } else {
1825                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1826                               -class => "rss_logo"}, "OPML") . " ";
1827                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1828                               -class => "rss_logo"}, "TXT") . "\n";
1829         }
1830         print "</div>\n" ;
1831
1832         if (-f $site_footer) {
1833                 open (my $fd, $site_footer);
1834                 print <$fd>;
1835                 close $fd;
1836         }
1837
1838         print "</body>\n" .
1839               "</html>";
1840 }
1841
1842 sub die_error {
1843         my $status = shift || "403 Forbidden";
1844         my $error = shift || "Malformed query, file missing or permission denied";
1845
1846         git_header_html($status);
1847         print <<EOF;
1848 <div class="page_body">
1849 <br /><br />
1850 $status - $error
1851 <br />
1852 </div>
1853 EOF
1854         git_footer_html();
1855         exit;
1856 }
1857
1858 ## ----------------------------------------------------------------------
1859 ## functions printing or outputting HTML: navigation
1860
1861 sub git_print_page_nav {
1862         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1863         $extra = '' if !defined $extra; # pager or formats
1864
1865         my @navs = qw(summary shortlog log commit commitdiff tree);
1866         if ($suppress) {
1867                 @navs = grep { $_ ne $suppress } @navs;
1868         }
1869
1870         my %arg = map { $_ => {action=>$_} } @navs;
1871         if (defined $head) {
1872                 for (qw(commit commitdiff)) {
1873                         $arg{$_}{hash} = $head;
1874                 }
1875                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1876                         for (qw(shortlog log)) {
1877                                 $arg{$_}{hash} = $head;
1878                         }
1879                 }
1880         }
1881         $arg{tree}{hash} = $treehead if defined $treehead;
1882         $arg{tree}{hash_base} = $treebase if defined $treebase;
1883
1884         print "<div class=\"page_nav\">\n" .
1885                 (join " | ",
1886                  map { $_ eq $current ?
1887                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1888                  } @navs);
1889         print "<br/>\n$extra<br/>\n" .
1890               "</div>\n";
1891 }
1892
1893 sub format_paging_nav {
1894         my ($action, $hash, $head, $page, $nrevs) = @_;
1895         my $paging_nav;
1896
1897
1898         if ($hash ne $head || $page) {
1899                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1900         } else {
1901                 $paging_nav .= "HEAD";
1902         }
1903
1904         if ($page > 0) {
1905                 $paging_nav .= " &sdot; " .
1906                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1907                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1908         } else {
1909                 $paging_nav .= " &sdot; prev";
1910         }
1911
1912         if ($nrevs >= (100 * ($page+1)-1)) {
1913                 $paging_nav .= " &sdot; " .
1914                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1915                                  -accesskey => "n", -title => "Alt-n"}, "next");
1916         } else {
1917                 $paging_nav .= " &sdot; next";
1918         }
1919
1920         return $paging_nav;
1921 }
1922
1923 ## ......................................................................
1924 ## functions printing or outputting HTML: div
1925
1926 sub git_print_header_div {
1927         my ($action, $title, $hash, $hash_base) = @_;
1928         my %args = ();
1929
1930         $args{action} = $action;
1931         $args{hash} = $hash if $hash;
1932         $args{hash_base} = $hash_base if $hash_base;
1933
1934         print "<div class=\"header\">\n" .
1935               $cgi->a({-href => href(%args), -class => "title"},
1936               $title ? $title : $action) .
1937               "\n</div>\n";
1938 }
1939
1940 #sub git_print_authorship (\%) {
1941 sub git_print_authorship {
1942         my $co = shift;
1943
1944         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1945         print "<div class=\"author_date\">" .
1946               esc_html($co->{'author_name'}) .
1947               " [$ad{'rfc2822'}";
1948         if ($ad{'hour_local'} < 6) {
1949                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1950                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1951         } else {
1952                 printf(" (%02d:%02d %s)",
1953                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1954         }
1955         print "]</div>\n";
1956 }
1957
1958 sub git_print_page_path {
1959         my $name = shift;
1960         my $type = shift;
1961         my $hb = shift;
1962
1963
1964         print "<div class=\"page_path\">";
1965         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1966                       -title => 'tree root'}, to_utf8("[$project]"));
1967         print " / ";
1968         if (defined $name) {
1969                 my @dirname = split '/', $name;
1970                 my $basename = pop @dirname;
1971                 my $fullname = '';
1972
1973                 foreach my $dir (@dirname) {
1974                         $fullname .= ($fullname ? '/' : '') . $dir;
1975                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1976                                                      hash_base=>$hb),
1977                                       -title => esc_html($fullname)}, esc_path($dir));
1978                         print " / ";
1979                 }
1980                 if (defined $type && $type eq 'blob') {
1981                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1982                                                      hash_base=>$hb),
1983                                       -title => esc_html($name)}, esc_path($basename));
1984                 } elsif (defined $type && $type eq 'tree') {
1985                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1986                                                      hash_base=>$hb),
1987                                       -title => esc_html($name)}, esc_path($basename));
1988                         print " / ";
1989                 } else {
1990                         print esc_path($basename);
1991                 }
1992         }
1993         print "<br/></div>\n";
1994 }
1995
1996 # sub git_print_log (\@;%) {
1997 sub git_print_log ($;%) {
1998         my $log = shift;
1999         my %opts = @_;
2000
2001         if ($opts{'-remove_title'}) {
2002                 # remove title, i.e. first line of log
2003                 shift @$log;
2004         }
2005         # remove leading empty lines
2006         while (defined $log->[0] && $log->[0] eq "") {
2007                 shift @$log;
2008         }
2009
2010         # print log
2011         my $signoff = 0;
2012         my $empty = 0;
2013         foreach my $line (@$log) {
2014                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2015                         $signoff = 1;
2016                         $empty = 0;
2017                         if (! $opts{'-remove_signoff'}) {
2018                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2019                                 next;
2020                         } else {
2021                                 # remove signoff lines
2022                                 next;
2023                         }
2024                 } else {
2025                         $signoff = 0;
2026                 }
2027
2028                 # print only one empty line
2029                 # do not print empty line after signoff
2030                 if ($line eq "") {
2031                         next if ($empty || $signoff);
2032                         $empty = 1;
2033                 } else {
2034                         $empty = 0;
2035                 }
2036
2037                 print format_log_line_html($line) . "<br/>\n";
2038         }
2039
2040         if ($opts{'-final_empty_line'}) {
2041                 # end with single empty line
2042                 print "<br/>\n" unless $empty;
2043         }
2044 }
2045
2046 # return link target (what link points to)
2047 sub git_get_link_target {
2048         my $hash = shift;
2049         my $link_target;
2050
2051         # read link
2052         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2053                 or return;
2054         {
2055                 local $/;
2056                 $link_target = <$fd>;
2057         }
2058         close $fd
2059                 or return;
2060
2061         return $link_target;
2062 }
2063
2064 # given link target, and the directory (basedir) the link is in,
2065 # return target of link relative to top directory (top tree);
2066 # return undef if it is not possible (including absolute links).
2067 sub normalize_link_target {
2068         my ($link_target, $basedir, $hash_base) = @_;
2069
2070         # we can normalize symlink target only if $hash_base is provided
2071         return unless $hash_base;
2072
2073         # absolute symlinks (beginning with '/') cannot be normalized
2074         return if (substr($link_target, 0, 1) eq '/');
2075
2076         # normalize link target to path from top (root) tree (dir)
2077         my $path;
2078         if ($basedir) {
2079                 $path = $basedir . '/' . $link_target;
2080         } else {
2081                 # we are in top (root) tree (dir)
2082                 $path = $link_target;
2083         }
2084
2085         # remove //, /./, and /../
2086         my @path_parts;
2087         foreach my $part (split('/', $path)) {
2088                 # discard '.' and ''
2089                 next if (!$part || $part eq '.');
2090                 # handle '..'
2091                 if ($part eq '..') {
2092                         if (@path_parts) {
2093                                 pop @path_parts;
2094                         } else {
2095                                 # link leads outside repository (outside top dir)
2096                                 return;
2097                         }
2098                 } else {
2099                         push @path_parts, $part;
2100                 }
2101         }
2102         $path = join('/', @path_parts);
2103
2104         return $path;
2105 }
2106
2107 # print tree entry (row of git_tree), but without encompassing <tr> element
2108 sub git_print_tree_entry {
2109         my ($t, $basedir, $hash_base, $have_blame) = @_;
2110
2111         my %base_key = ();
2112         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2113
2114         # The format of a table row is: mode list link.  Where mode is
2115         # the mode of the entry, list is the name of the entry, an href,
2116         # and link is the action links of the entry.
2117
2118         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2119         if ($t->{'type'} eq "blob") {
2120                 print "<td class=\"list\">" .
2121                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2122                                                file_name=>"$basedir$t->{'name'}", %base_key),
2123                                 -class => "list"}, esc_path($t->{'name'}));
2124                 if (S_ISLNK(oct $t->{'mode'})) {
2125                         my $link_target = git_get_link_target($t->{'hash'});
2126                         if ($link_target) {
2127                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2128                                 if (defined $norm_target) {
2129                                         print " -> " .
2130                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2131                                                                      file_name=>$norm_target),
2132                                                        -title => $norm_target}, esc_path($link_target));
2133                                 } else {
2134                                         print " -> " . esc_path($link_target);
2135                                 }
2136                         }
2137                 }
2138                 print "</td>\n";
2139                 print "<td class=\"link\">";
2140                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2141                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2142                               "blob");
2143                 if ($have_blame) {
2144                         print " | " .
2145                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2146                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2147                                       "blame");
2148                 }
2149                 if (defined $hash_base) {
2150                         print " | " .
2151                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2152                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2153                                       "history");
2154                 }
2155                 print " | " .
2156                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2157                                                file_name=>"$basedir$t->{'name'}")},
2158                                 "raw");
2159                 print "</td>\n";
2160
2161         } elsif ($t->{'type'} eq "tree") {
2162                 print "<td class=\"list\">";
2163                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2164                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2165                               esc_path($t->{'name'}));
2166                 print "</td>\n";
2167                 print "<td class=\"link\">";
2168                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2169                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2170                               "tree");
2171                 if (defined $hash_base) {
2172                         print " | " .
2173                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2174                                                      file_name=>"$basedir$t->{'name'}")},
2175                                       "history");
2176                 }
2177                 print "</td>\n";
2178         }
2179 }
2180
2181 ## ......................................................................
2182 ## functions printing large fragments of HTML
2183
2184 sub git_difftree_body {
2185         my ($difftree, $hash, $parent) = @_;
2186         my ($have_blame) = gitweb_check_feature('blame');
2187         print "<div class=\"list_head\">\n";
2188         if ($#{$difftree} > 10) {
2189                 print(($#{$difftree} + 1) . " files changed:\n");
2190         }
2191         print "</div>\n";
2192
2193         print "<table class=\"diff_tree\">\n";
2194         my $alternate = 1;
2195         my $patchno = 0;
2196         foreach my $line (@{$difftree}) {
2197                 my %diff = parse_difftree_raw_line($line);
2198
2199                 if ($alternate) {
2200                         print "<tr class=\"dark\">\n";
2201                 } else {
2202                         print "<tr class=\"light\">\n";
2203                 }
2204                 $alternate ^= 1;
2205
2206                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2207                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2208                 if ($diff{'to_mode'} ne ('0' x 6)) {
2209                         $to_mode_oct = oct $diff{'to_mode'};
2210                         if (S_ISREG($to_mode_oct)) { # only for regular file
2211                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2212                         }
2213                         $to_file_type = file_type($diff{'to_mode'});
2214                 }
2215                 if ($diff{'from_mode'} ne ('0' x 6)) {
2216                         $from_mode_oct = oct $diff{'from_mode'};
2217                         if (S_ISREG($to_mode_oct)) { # only for regular file
2218                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2219                         }
2220                         $from_file_type = file_type($diff{'from_mode'});
2221                 }
2222
2223                 if ($diff{'status'} eq "A") { # created
2224                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2225                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2226                         $mode_chng   .= "]</span>";
2227                         print "<td>";
2228                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2229                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2230                                       -class => "list"}, esc_path($diff{'file'}));
2231                         print "</td>\n";
2232                         print "<td>$mode_chng</td>\n";
2233                         print "<td class=\"link\">";
2234                         if ($action eq 'commitdiff') {
2235                                 # link to patch
2236                                 $patchno++;
2237                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2238                                 print " | ";
2239                         }
2240                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2241                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2242                                       "blob");
2243                         print "</td>\n";
2244
2245                 } elsif ($diff{'status'} eq "D") { # deleted
2246                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2247                         print "<td>";
2248                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2249                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2250                                        -class => "list"}, esc_path($diff{'file'}));
2251                         print "</td>\n";
2252                         print "<td>$mode_chng</td>\n";
2253                         print "<td class=\"link\">";
2254                         if ($action eq 'commitdiff') {
2255                                 # link to patch
2256                                 $patchno++;
2257                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2258                                 print " | ";
2259                         }
2260                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2261                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2262                                       "blob") . " | ";
2263                         if ($have_blame) {
2264                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2265                                                              file_name=>$diff{'file'})},
2266                                               "blame") . " | ";
2267                         }
2268                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2269                                                      file_name=>$diff{'file'})},
2270                                       "history");
2271                         print "</td>\n";
2272
2273                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2274                         my $mode_chnge = "";
2275                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2276                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2277                                 if ($from_file_type ne $to_file_type) {
2278                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2279                                 }
2280                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2281                                         if ($from_mode_str && $to_mode_str) {
2282                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2283                                         } elsif ($to_mode_str) {
2284                                                 $mode_chnge .= " mode: $to_mode_str";
2285                                         }
2286                                 }
2287                                 $mode_chnge .= "]</span>\n";
2288                         }
2289                         print "<td>";
2290                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2291                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2292                                       -class => "list"}, esc_path($diff{'file'}));
2293                         print "</td>\n";
2294                         print "<td>$mode_chnge</td>\n";
2295                         print "<td class=\"link\">";
2296                         if ($action eq 'commitdiff') {
2297                                 # link to patch
2298                                 $patchno++;
2299                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2300                                       " | ";
2301                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2302                                 # "commit" view and modified file (not onlu mode changed)
2303                                 print $cgi->a({-href => href(action=>"blobdiff",
2304                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2305                                                              hash_base=>$hash, hash_parent_base=>$parent,
2306                                                              file_name=>$diff{'file'})},
2307                                               "diff") .
2308                                       " | ";
2309                         }
2310                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2311                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2312                                        "blob") . " | ";
2313                         if ($have_blame) {
2314                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2315                                                              file_name=>$diff{'file'})},
2316                                               "blame") . " | ";
2317                         }
2318                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2319                                                      file_name=>$diff{'file'})},
2320                                       "history");
2321                         print "</td>\n";
2322
2323                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2324                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2325                         my $nstatus = $status_name{$diff{'status'}};
2326                         my $mode_chng = "";
2327                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2328                                 # mode also for directories, so we cannot use $to_mode_str
2329                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2330                         }
2331                         print "<td>" .
2332                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2333                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2334                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2335                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2336                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2337                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2338                                       -class => "list"}, esc_path($diff{'from_file'})) .
2339                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2340                               "<td class=\"link\">";
2341                         if ($action eq 'commitdiff') {
2342                                 # link to patch
2343                                 $patchno++;
2344                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2345                                       " | ";
2346                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2347                                 # "commit" view and modified file (not only pure rename or copy)
2348                                 print $cgi->a({-href => href(action=>"blobdiff",
2349                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2350                                                              hash_base=>$hash, hash_parent_base=>$parent,
2351                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2352                                               "diff") .
2353                                       " | ";
2354                         }
2355                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2356                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2357                                       "blob") . " | ";
2358                         if ($have_blame) {
2359                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2360                                                              file_name=>$diff{'to_file'})},
2361                                               "blame") . " | ";
2362                         }
2363                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2364                                                     file_name=>$diff{'to_file'})},
2365                                       "history");
2366                         print "</td>\n";
2367
2368                 } # we should not encounter Unmerged (U) or Unknown (X) status
2369                 print "</tr>\n";
2370         }
2371         print "</table>\n";
2372 }
2373
2374 sub git_patchset_body {
2375         my ($fd, $difftree, $hash, $hash_parent) = @_;
2376
2377         my $patch_idx = 0;
2378         my $patch_line;
2379         my $diffinfo;
2380         my (%from, %to);
2381
2382         print "<div class=\"patchset\">\n";
2383
2384         # skip to first patch
2385         while ($patch_line = <$fd>) {
2386                 chomp $patch_line;
2387
2388                 last if ($patch_line =~ m/^diff /);
2389         }
2390
2391  PATCH:
2392         while ($patch_line) {
2393                 my @diff_header;
2394                 my ($from_id, $to_id);
2395
2396                 # git diff header
2397                 #assert($patch_line =~ m/^diff /) if DEBUG;
2398                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2399                 push @diff_header, $patch_line;
2400
2401                 # extended diff header
2402         EXTENDED_HEADER:
2403                 while ($patch_line = <$fd>) {
2404                         chomp $patch_line;
2405
2406                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2407
2408                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2409                                 $from_id = $1;
2410                                 $to_id   = $2;
2411                         }
2412
2413                         push @diff_header, $patch_line;
2414                 }
2415                 my $last_patch_line = $patch_line;
2416
2417                 # check if current patch belong to current raw line
2418                 # and parse raw git-diff line if needed
2419                 if (defined $diffinfo &&
2420                     $diffinfo->{'from_id'} eq $from_id &&
2421                     $diffinfo->{'to_id'}   eq $to_id) {
2422                         # this is split patch
2423                         print "<div class=\"patch cont\">\n";
2424                 } else {
2425                         # advance raw git-diff output if needed
2426                         $patch_idx++ if defined $diffinfo;
2427
2428                         # read and prepare patch information
2429                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2430                                 # pre-parsed (or generated by hand)
2431                                 $diffinfo = $difftree->[$patch_idx];
2432                         } else {
2433                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2434                         }
2435                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2436                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2437                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2438                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2439                                                      hash=>$diffinfo->{'from_id'},
2440                                                      file_name=>$from{'file'});
2441                         } else {
2442                                 delete $from{'href'};
2443                         }
2444                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2445                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2446                                                    hash=>$diffinfo->{'to_id'},
2447                                                    file_name=>$to{'file'});
2448                         } else {
2449                                 delete $to{'href'};
2450                         }
2451                         # this is first patch for raw difftree line with $patch_idx index
2452                         # we index @$difftree array from 0, but number patches from 1
2453                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2454                 }
2455
2456                 # print "git diff" header
2457                 $patch_line = shift @diff_header;
2458                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2459                 if ($from{'href'}) {
2460                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2461                                                'a/' . esc_path($from{'file'}));
2462                 } else { # file was added
2463                         $patch_line .= 'a/' . esc_path($from{'file'});
2464                 }
2465                 $patch_line .= ' ';
2466                 if ($to{'href'}) {
2467                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2468                                                'b/' . esc_path($to{'file'}));
2469                 } else { # file was deleted
2470                         $patch_line .= 'b/' . esc_path($to{'file'});
2471                 }
2472                 print "<div class=\"diff header\">$patch_line</div>\n";
2473
2474                 # print extended diff header
2475                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2476         EXTENDED_HEADER:
2477                 foreach $patch_line (@diff_header) {
2478                         # match <path>
2479                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2480                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2481                                                        esc_path($from{'file'}));
2482                         }
2483                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2484                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2485                                                        esc_path($to{'file'}));
2486                         }
2487                         # match <mode>
2488                         if ($patch_line =~ m/\s(\d{6})$/) {
2489                                 $patch_line .= '<span class="info"> (' .
2490                                                file_type_long($1) .
2491                                                ')</span>';
2492                         }
2493                         # match <hash>
2494                         if ($patch_line =~ m/^index/) {
2495                                 my ($from_link, $to_link);
2496                                 if ($from{'href'}) {
2497                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2498                                                              substr($diffinfo->{'from_id'},0,7));
2499                                 } else {
2500                                         $from_link = '0' x 7;
2501                                 }
2502                                 if ($to{'href'}) {
2503                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2504                                                            substr($diffinfo->{'to_id'},0,7));
2505                                 } else {
2506                                         $to_link = '0' x 7;
2507                                 }
2508                                 #affirm {
2509                                 #       my ($from_hash, $to_hash) =
2510                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2511                                 #       my ($from_id, $to_id) =
2512                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2513                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2514                                 #} if DEBUG;
2515                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2516                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2517                         }
2518                         print $patch_line . "<br/>\n";
2519                 }
2520                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2521
2522                 # from-file/to-file diff header
2523                 $patch_line = $last_patch_line;
2524                 if (! $patch_line) {
2525                         print "</div>\n"; # class="patch"
2526                         last PATCH;
2527                 }
2528                 next PATCH if ($patch_line =~ m/^diff /);
2529                 #assert($patch_line =~ m/^---/) if DEBUG;
2530                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2531                         $patch_line = '--- a/' .
2532                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2533                                               esc_path($from{'file'}));
2534                 }
2535                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2536
2537                 $patch_line = <$fd>;
2538                 chomp $patch_line;
2539
2540                 #assert($patch_line =~ m/^+++/) if DEBUG;
2541                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2542                         $patch_line = '+++ b/' .
2543                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2544                                               esc_path($to{'file'}));
2545                 }
2546                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2547
2548                 # the patch itself
2549         LINE:
2550                 while ($patch_line = <$fd>) {
2551                         chomp $patch_line;
2552
2553                         next PATCH if ($patch_line =~ m/^diff /);
2554
2555                         print format_diff_line($patch_line, \%from, \%to);
2556                 }
2557
2558         } continue {
2559                 print "</div>\n"; # class="patch"
2560         }
2561
2562         print "</div>\n"; # class="patchset"
2563 }
2564
2565 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2566
2567 sub git_project_list_body {
2568         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2569
2570         my ($check_forks) = gitweb_check_feature('forks');
2571
2572         my @projects;
2573         foreach my $pr (@$projlist) {
2574                 my (@aa) = git_get_last_activity($pr->{'path'});
2575                 unless (@aa) {
2576                         next;
2577                 }
2578                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2579                 if (!defined $pr->{'descr'}) {
2580                         my $descr = git_get_project_description($pr->{'path'}) || "";
2581                         $pr->{'descr_long'} = to_utf8($descr);
2582                         $pr->{'descr'} = chop_str($descr, 25, 5);
2583                 }
2584                 if (!defined $pr->{'owner'}) {
2585                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2586                 }
2587                 if ($check_forks) {
2588                         my $pname = $pr->{'path'};
2589                         if (($pname =~ s/\.git$//) &&
2590                             ($pname !~ /\/$/) &&
2591                             (-d "$projectroot/$pname")) {
2592                                 $pr->{'forks'} = "-d $projectroot/$pname";
2593                         }
2594                         else {
2595                                 $pr->{'forks'} = 0;
2596                         }
2597                 }
2598                 push @projects, $pr;
2599         }
2600
2601         $order ||= "project";
2602         $from = 0 unless defined $from;
2603         $to = $#projects if (!defined $to || $#projects < $to);
2604
2605         print "<table class=\"project_list\">\n";
2606         unless ($no_header) {
2607                 print "<tr>\n";
2608                 if ($check_forks) {
2609                         print "<th></th>\n";
2610                 }
2611                 if ($order eq "project") {
2612                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2613                         print "<th>Project</th>\n";
2614                 } else {
2615                         print "<th>" .
2616                               $cgi->a({-href => href(project=>undef, order=>'project'),
2617                                        -class => "header"}, "Project") .
2618                               "</th>\n";
2619                 }
2620                 if ($order eq "descr") {
2621                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2622                         print "<th>Description</th>\n";
2623                 } else {
2624                         print "<th>" .
2625                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2626                                        -class => "header"}, "Description") .
2627                               "</th>\n";
2628                 }
2629                 if ($order eq "owner") {
2630                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2631                         print "<th>Owner</th>\n";
2632                 } else {
2633                         print "<th>" .
2634                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2635                                        -class => "header"}, "Owner") .
2636                               "</th>\n";
2637                 }
2638                 if ($order eq "age") {
2639                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2640                         print "<th>Last Change</th>\n";
2641                 } else {
2642                         print "<th>" .
2643                               $cgi->a({-href => href(project=>undef, order=>'age'),
2644                                        -class => "header"}, "Last Change") .
2645                               "</th>\n";
2646                 }
2647                 print "<th></th>\n" .
2648                       "</tr>\n";
2649         }
2650         my $alternate = 1;
2651         for (my $i = $from; $i <= $to; $i++) {
2652                 my $pr = $projects[$i];
2653                 if ($alternate) {
2654                         print "<tr class=\"dark\">\n";
2655                 } else {
2656                         print "<tr class=\"light\">\n";
2657                 }
2658                 $alternate ^= 1;
2659                 if ($check_forks) {
2660                         print "<td>";
2661                         if ($pr->{'forks'}) {
2662                                 print "<!-- $pr->{'forks'} -->\n";
2663                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2664                         }
2665                         print "</td>\n";
2666                 }
2667                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2668                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2669                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2670                                         -class => "list", -title => $pr->{'descr_long'}},
2671                                         esc_html($pr->{'descr'})) . "</td>\n" .
2672                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2673                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2674                       $pr->{'age_string'} . "</td>\n" .
2675                       "<td class=\"link\">" .
2676                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2677                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2678                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2679                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2680                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2681                       "</td>\n" .
2682                       "</tr>\n";
2683         }
2684         if (defined $extra) {
2685                 print "<tr>\n";
2686                 if ($check_forks) {
2687                         print "<td></td>\n";
2688                 }
2689                 print "<td colspan=\"5\">$extra</td>\n" .
2690                       "</tr>\n";
2691         }
2692         print "</table>\n";
2693 }
2694
2695 sub git_shortlog_body {
2696         # uses global variable $project
2697         my ($commitlist, $from, $to, $refs, $extra) = @_;
2698
2699         my $have_snapshot = gitweb_have_snapshot();
2700
2701         $from = 0 unless defined $from;
2702         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2703
2704         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2705         my $alternate = 1;
2706         for (my $i = $from; $i <= $to; $i++) {
2707                 my %co = %{$commitlist->[$i]};
2708                 my $commit = $co{'id'};
2709                 my $ref = format_ref_marker($refs, $commit);
2710                 if ($alternate) {
2711                         print "<tr class=\"dark\">\n";
2712                 } else {
2713                         print "<tr class=\"light\">\n";
2714                 }
2715                 $alternate ^= 1;
2716                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2717                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2718                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2719                       "<td>";
2720                 print format_subject_html($co{'title'}, $co{'title_short'},
2721                                           href(action=>"commit", hash=>$commit), $ref);
2722                 print "</td>\n" .
2723                       "<td class=\"link\">" .
2724                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2725                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2726                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2727                 if ($have_snapshot) {
2728                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2729                 }
2730                 print "</td>\n" .
2731                       "</tr>\n";
2732         }
2733         if (defined $extra) {
2734                 print "<tr>\n" .
2735                       "<td colspan=\"4\">$extra</td>\n" .
2736                       "</tr>\n";
2737         }
2738         print "</table>\n";
2739 }
2740
2741 sub git_history_body {
2742         # Warning: assumes constant type (blob or tree) during history
2743         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2744
2745         $from = 0 unless defined $from;
2746         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2747
2748         print "<table class=\"history\" cellspacing=\"0\">\n";
2749         my $alternate = 1;
2750         for (my $i = $from; $i <= $to; $i++) {
2751                 my %co = %{$commitlist->[$i]};
2752                 if (!%co) {
2753                         next;
2754                 }
2755                 my $commit = $co{'id'};
2756
2757                 my $ref = format_ref_marker($refs, $commit);
2758
2759                 if ($alternate) {
2760                         print "<tr class=\"dark\">\n";
2761                 } else {
2762                         print "<tr class=\"light\">\n";
2763                 }
2764                 $alternate ^= 1;
2765                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2766                       # shortlog uses      chop_str($co{'author_name'}, 10)
2767                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2768                       "<td>";
2769                 # originally git_history used chop_str($co{'title'}, 50)
2770                 print format_subject_html($co{'title'}, $co{'title_short'},
2771                                           href(action=>"commit", hash=>$commit), $ref);
2772                 print "</td>\n" .
2773                       "<td class=\"link\">" .
2774                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2775                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2776
2777                 if ($ftype eq 'blob') {
2778                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2779                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2780                         if (defined $blob_current && defined $blob_parent &&
2781                                         $blob_current ne $blob_parent) {
2782                                 print " | " .
2783                                         $cgi->a({-href => href(action=>"blobdiff",
2784                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2785                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2786                                                                file_name=>$file_name)},
2787                                                 "diff to current");
2788                         }
2789                 }
2790                 print "</td>\n" .
2791                       "</tr>\n";
2792         }
2793         if (defined $extra) {
2794                 print "<tr>\n" .
2795                       "<td colspan=\"4\">$extra</td>\n" .
2796                       "</tr>\n";
2797         }
2798         print "</table>\n";
2799 }
2800
2801 sub git_tags_body {
2802         # uses global variable $project
2803         my ($taglist, $from, $to, $extra) = @_;
2804         $from = 0 unless defined $from;
2805         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2806
2807         print "<table class=\"tags\" cellspacing=\"0\">\n";
2808         my $alternate = 1;
2809         for (my $i = $from; $i <= $to; $i++) {
2810                 my $entry = $taglist->[$i];
2811                 my %tag = %$entry;
2812                 my $comment = $tag{'subject'};
2813                 my $comment_short;
2814                 if (defined $comment) {
2815                         $comment_short = chop_str($comment, 30, 5);
2816                 }
2817                 if ($alternate) {
2818                         print "<tr class=\"dark\">\n";
2819                 } else {
2820                         print "<tr class=\"light\">\n";
2821                 }
2822                 $alternate ^= 1;
2823                 if (defined $tag{'age'}) {
2824                         print "<td><i>$tag{'age'}</i></td>\n";
2825                 } else {
2826                         print "<td></td>\n";
2827                 }
2828                 print "<td>" .
2829                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2830                                -class => "list name"}, esc_html($tag{'name'})) .
2831                       "</td>\n" .
2832                       "<td>";
2833                 if (defined $comment) {
2834                         print format_subject_html($comment, $comment_short,
2835                                                   href(action=>"tag", hash=>$tag{'id'}));
2836                 }
2837                 print "</td>\n" .
2838                       "<td class=\"selflink\">";
2839                 if ($tag{'type'} eq "tag") {
2840                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2841                 } else {
2842                         print "&nbsp;";
2843                 }
2844                 print "</td>\n" .
2845                       "<td class=\"link\">" . " | " .
2846                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2847                 if ($tag{'reftype'} eq "commit") {
2848                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2849                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2850                 } elsif ($tag{'reftype'} eq "blob") {
2851                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2852                 }
2853                 print "</td>\n" .
2854                       "</tr>";
2855         }
2856         if (defined $extra) {
2857                 print "<tr>\n" .
2858                       "<td colspan=\"5\">$extra</td>\n" .
2859                       "</tr>\n";
2860         }
2861         print "</table>\n";
2862 }
2863
2864 sub git_heads_body {
2865         # uses global variable $project
2866         my ($headlist, $head, $from, $to, $extra) = @_;
2867         $from = 0 unless defined $from;
2868         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2869
2870         print "<table class=\"heads\" cellspacing=\"0\">\n";
2871         my $alternate = 1;
2872         for (my $i = $from; $i <= $to; $i++) {
2873                 my $entry = $headlist->[$i];
2874                 my %ref = %$entry;
2875                 my $curr = $ref{'id'} eq $head;
2876                 if ($alternate) {
2877                         print "<tr class=\"dark\">\n";
2878                 } else {
2879                         print "<tr class=\"light\">\n";
2880                 }
2881                 $alternate ^= 1;
2882                 print "<td><i>$ref{'age'}</i></td>\n" .
2883                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2884                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2885                                -class => "list name"},esc_html($ref{'name'})) .
2886                       "</td>\n" .
2887                       "<td class=\"link\">" .
2888                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2889                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2890                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2891                       "</td>\n" .
2892                       "</tr>";
2893         }
2894         if (defined $extra) {
2895                 print "<tr>\n" .
2896                       "<td colspan=\"3\">$extra</td>\n" .
2897                       "</tr>\n";
2898         }
2899         print "</table>\n";
2900 }
2901
2902 sub git_search_grep_body {
2903         my ($commitlist, $from, $to, $extra) = @_;
2904         $from = 0 unless defined $from;
2905         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2906
2907         print "<table class=\"grep\" cellspacing=\"0\">\n";
2908         my $alternate = 1;
2909         for (my $i = $from; $i <= $to; $i++) {
2910                 my %co = %{$commitlist->[$i]};
2911                 if (!%co) {
2912                         next;
2913                 }
2914                 my $commit = $co{'id'};
2915                 if ($alternate) {
2916                         print "<tr class=\"dark\">\n";
2917                 } else {
2918                         print "<tr class=\"light\">\n";
2919                 }
2920                 $alternate ^= 1;
2921                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2922                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2923                       "<td>" .
2924                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2925                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2926                 my $comment = $co{'comment'};
2927                 foreach my $line (@$comment) {
2928                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2929                                 my $lead = esc_html($1) || "";
2930                                 $lead = chop_str($lead, 30, 10);
2931                                 my $match = esc_html($2) || "";
2932                                 my $trail = esc_html($3) || "";
2933                                 $trail = chop_str($trail, 30, 10);
2934                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2935                                 print chop_str($text, 80, 5) . "<br/>\n";
2936                         }
2937                 }
2938                 print "</td>\n" .
2939                       "<td class=\"link\">" .
2940                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2941                       " | " .
2942                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2943                 print "</td>\n" .
2944                       "</tr>\n";
2945         }
2946         if (defined $extra) {
2947                 print "<tr>\n" .
2948                       "<td colspan=\"3\">$extra</td>\n" .
2949                       "</tr>\n";
2950         }
2951         print "</table>\n";
2952 }
2953
2954 ## ======================================================================
2955 ## ======================================================================
2956 ## actions
2957
2958 sub git_project_list {
2959         my $order = $cgi->param('o');
2960         if (defined $order && $order !~ m/project|descr|owner|age/) {
2961                 die_error(undef, "Unknown order parameter");
2962         }
2963
2964         my @list = git_get_projects_list();
2965         if (!@list) {
2966                 die_error(undef, "No projects found");
2967         }
2968
2969         git_header_html();
2970         if (-f $home_text) {
2971                 print "<div class=\"index_include\">\n";
2972                 open (my $fd, $home_text);
2973                 print <$fd>;
2974                 close $fd;
2975                 print "</div>\n";
2976         }
2977         git_project_list_body(\@list, $order);
2978         git_footer_html();
2979 }
2980
2981 sub git_forks {
2982         my $order = $cgi->param('o');
2983         if (defined $order && $order !~ m/project|descr|owner|age/) {
2984                 die_error(undef, "Unknown order parameter");
2985         }
2986
2987         my @list = git_get_projects_list($project);
2988         if (!@list) {
2989                 die_error(undef, "No forks found");
2990         }
2991
2992         git_header_html();
2993         git_print_page_nav('','');
2994         git_print_header_div('summary', "$project forks");
2995         git_project_list_body(\@list, $order);
2996         git_footer_html();
2997 }
2998
2999 sub git_project_index {
3000         my @projects = git_get_projects_list($project);
3001
3002         print $cgi->header(
3003                 -type => 'text/plain',
3004                 -charset => 'utf-8',
3005                 -content_disposition => 'inline; filename="index.aux"');
3006
3007         foreach my $pr (@projects) {
3008                 if (!exists $pr->{'owner'}) {
3009                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3010                 }
3011
3012                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3013                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3014                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3015                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3016                 $path  =~ s/ /\+/g;
3017                 $owner =~ s/ /\+/g;
3018
3019                 print "$path $owner\n";
3020         }
3021 }
3022
3023 sub git_summary {
3024         my $descr = git_get_project_description($project) || "none";
3025         my %co = parse_commit("HEAD");
3026         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3027         my $head = $co{'id'};
3028
3029         my $owner = git_get_project_owner($project);
3030
3031         my $refs = git_get_references();
3032         # These get_*_list functions return one more to allow us to see if
3033         # there are more ...
3034         my @taglist  = git_get_tags_list(16);
3035         my @headlist = git_get_heads_list(16);
3036         my @forklist;
3037         my ($check_forks) = gitweb_check_feature('forks');
3038
3039         if ($check_forks) {
3040                 @forklist = git_get_projects_list($project);
3041         }
3042
3043         git_header_html();
3044         git_print_page_nav('summary','', $head);
3045
3046         print "<div class=\"title\">&nbsp;</div>\n";
3047         print "<table cellspacing=\"0\">\n" .
3048               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3049               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3050               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3051         # use per project git URL list in $projectroot/$project/cloneurl
3052         # or make project git URL from git base URL and project name
3053         my $url_tag = "URL";
3054         my @url_list = git_get_project_url_list($project);
3055         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3056         foreach my $git_url (@url_list) {
3057                 next unless $git_url;
3058                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3059                 $url_tag = "";
3060         }
3061         print "</table>\n";
3062
3063         if (-s "$projectroot/$project/README.html") {
3064                 if (open my $fd, "$projectroot/$project/README.html") {
3065                         print "<div class=\"title\">readme</div>\n";
3066                         print $_ while (<$fd>);
3067                         close $fd;
3068                 }
3069         }
3070
3071         # we need to request one more than 16 (0..15) to check if
3072         # those 16 are all
3073         my @commitlist = parse_commits($head, 17);
3074         git_print_header_div('shortlog');
3075         git_shortlog_body(\@commitlist, 0, 15, $refs,
3076                           $#commitlist <=  15 ? undef :
3077                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3078
3079         if (@taglist) {
3080                 git_print_header_div('tags');
3081                 git_tags_body(\@taglist, 0, 15,
3082                               $#taglist <=  15 ? undef :
3083                               $cgi->a({-href => href(action=>"tags")}, "..."));
3084         }
3085
3086         if (@headlist) {
3087                 git_print_header_div('heads');
3088                 git_heads_body(\@headlist, $head, 0, 15,
3089                                $#headlist <= 15 ? undef :
3090                                $cgi->a({-href => href(action=>"heads")}, "..."));
3091         }
3092
3093         if (@forklist) {
3094                 git_print_header_div('forks');
3095                 git_project_list_body(\@forklist, undef, 0, 15,
3096                                       $#forklist <= 15 ? undef :
3097                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3098                                       'noheader');
3099         }
3100
3101         git_footer_html();
3102 }
3103
3104 sub git_tag {
3105         my $head = git_get_head_hash($project);
3106         git_header_html();
3107         git_print_page_nav('','', $head,undef,$head);
3108         my %tag = parse_tag($hash);
3109         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3110         print "<div class=\"title_text\">\n" .
3111               "<table cellspacing=\"0\">\n" .
3112               "<tr>\n" .
3113               "<td>object</td>\n" .
3114               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3115                                $tag{'object'}) . "</td>\n" .
3116               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3117                                               $tag{'type'}) . "</td>\n" .
3118               "</tr>\n";
3119         if (defined($tag{'author'})) {
3120                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3121                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3122                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3123                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3124                         "</td></tr>\n";
3125         }
3126         print "</table>\n\n" .
3127               "</div>\n";
3128         print "<div class=\"page_body\">";
3129         my $comment = $tag{'comment'};
3130         foreach my $line (@$comment) {
3131                 chomp $line;
3132                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3133         }
3134         print "</div>\n";
3135         git_footer_html();
3136 }
3137
3138 sub git_blame2 {
3139         my $fd;
3140         my $ftype;
3141
3142         my ($have_blame) = gitweb_check_feature('blame');
3143         if (!$have_blame) {
3144                 die_error('403 Permission denied', "Permission denied");
3145         }
3146         die_error('404 Not Found', "File name not defined") if (!$file_name);
3147         $hash_base ||= git_get_head_hash($project);
3148         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3149         my %co = parse_commit($hash_base)
3150                 or die_error(undef, "Reading commit failed");
3151         if (!defined $hash) {
3152                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3153                         or die_error(undef, "Error looking up file");
3154         }
3155         $ftype = git_get_type($hash);
3156         if ($ftype !~ "blob") {
3157                 die_error("400 Bad Request", "Object is not a blob");
3158         }
3159         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3160               $file_name, $hash_base)
3161                 or die_error(undef, "Open git-blame failed");
3162         git_header_html();
3163         my $formats_nav =
3164                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3165                         "blob") .
3166                 " | " .
3167                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3168                         "history") .
3169                 " | " .
3170                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3171                         "HEAD");
3172         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3173         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3174         git_print_page_path($file_name, $ftype, $hash_base);
3175         my @rev_color = (qw(light2 dark2));
3176         my $num_colors = scalar(@rev_color);
3177         my $current_color = 0;
3178         my $last_rev;
3179         print <<HTML;
3180 <div class="page_body">
3181 <table class="blame">
3182 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3183 HTML
3184         my %metainfo = ();
3185         while (1) {
3186                 $_ = <$fd>;
3187                 last unless defined $_;
3188                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3189                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3190                 if (!exists $metainfo{$full_rev}) {
3191                         $metainfo{$full_rev} = {};
3192                 }
3193                 my $meta = $metainfo{$full_rev};
3194                 while (<$fd>) {
3195                         last if (s/^\t//);
3196                         if (/^(\S+) (.*)$/) {
3197                                 $meta->{$1} = $2;
3198                         }
3199                 }
3200                 my $data = $_;
3201                 chomp $data;
3202                 my $rev = substr($full_rev, 0, 8);
3203                 my $author = $meta->{'author'};
3204                 my %date = parse_date($meta->{'author-time'},
3205                                       $meta->{'author-tz'});
3206                 my $date = $date{'iso-tz'};
3207                 if ($group_size) {
3208                         $current_color = ++$current_color % $num_colors;
3209                 }
3210                 print "<tr class=\"$rev_color[$current_color]\">\n";
3211                 if ($group_size) {
3212                         print "<td class=\"sha1\"";
3213                         print " title=\"". esc_html($author) . ", $date\"";
3214                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3215                         print ">";
3216                         print $cgi->a({-href => href(action=>"commit",
3217                                                      hash=>$full_rev,
3218                                                      file_name=>$file_name)},
3219                                       esc_html($rev));
3220                         print "</td>\n";
3221                 }
3222                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3223                         or die_error("could not open git-rev-parse");
3224                 my $parent_commit = <$dd>;
3225                 close $dd;
3226                 chomp($parent_commit);
3227                 my $blamed = href(action => 'blame',
3228                                   file_name => $meta->{'filename'},
3229                                   hash_base => $parent_commit);
3230                 print "<td class=\"linenr\">";
3231                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3232                                 -id => "l$lineno",
3233                                 -class => "linenr" },
3234                               esc_html($lineno));
3235                 print "</td>";
3236                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3237                 print "</tr>\n";
3238         }
3239         print "</table>\n";
3240         print "</div>";
3241         close $fd
3242                 or print "Reading blob failed\n";
3243         git_footer_html();
3244 }
3245
3246 sub git_blame {
3247         my $fd;
3248
3249         my ($have_blame) = gitweb_check_feature('blame');
3250         if (!$have_blame) {
3251                 die_error('403 Permission denied', "Permission denied");
3252         }
3253         die_error('404 Not Found', "File name not defined") if (!$file_name);
3254         $hash_base ||= git_get_head_hash($project);
3255         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3256         my %co = parse_commit($hash_base)
3257                 or die_error(undef, "Reading commit failed");
3258         if (!defined $hash) {
3259                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3260                         or die_error(undef, "Error lookup file");
3261         }
3262         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3263                 or die_error(undef, "Open git-annotate failed");
3264         git_header_html();
3265         my $formats_nav =
3266                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3267                         "blob") .
3268                 " | " .
3269                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3270                         "history") .
3271                 " | " .
3272                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3273                         "HEAD");
3274         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3275         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3276         git_print_page_path($file_name, 'blob', $hash_base);
3277         print "<div class=\"page_body\">\n";
3278         print <<HTML;
3279 <table class="blame">
3280   <tr>
3281     <th>Commit</th>
3282     <th>Age</th>
3283     <th>Author</th>
3284     <th>Line</th>
3285     <th>Data</th>
3286   </tr>
3287 HTML
3288         my @line_class = (qw(light dark));
3289         my $line_class_len = scalar (@line_class);
3290         my $line_class_num = $#line_class;
3291         while (my $line = <$fd>) {
3292                 my $long_rev;
3293                 my $short_rev;
3294                 my $author;
3295                 my $time;
3296                 my $lineno;
3297                 my $data;
3298                 my $age;
3299                 my $age_str;
3300                 my $age_class;
3301
3302                 chomp $line;
3303                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3304
3305                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3306                         $long_rev = $1;
3307                         $author   = $2;
3308                         $time     = $3;
3309                         $lineno   = $4;
3310                         $data     = $5;
3311                 } else {
3312                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3313                         next;
3314                 }
3315                 $short_rev  = substr ($long_rev, 0, 8);
3316                 $age        = time () - $time;
3317                 $age_str    = age_string ($age);
3318                 $age_str    =~ s/ /&nbsp;/g;
3319                 $age_class  = age_class($age);
3320                 $author     = esc_html ($author);
3321                 $author     =~ s/ /&nbsp;/g;
3322
3323                 $data = untabify($data);
3324                 $data = esc_html ($data);
3325
3326                 print <<HTML;
3327   <tr class="$line_class[$line_class_num]">
3328     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3329     <td class="$age_class">$age_str</td>
3330     <td>$author</td>
3331     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3332     <td class="pre">$data</td>
3333   </tr>
3334 HTML
3335         } # while (my $line = <$fd>)
3336         print "</table>\n\n";
3337         close $fd
3338                 or print "Reading blob failed.\n";
3339         print "</div>";
3340         git_footer_html();
3341 }
3342
3343 sub git_tags {
3344         my $head = git_get_head_hash($project);
3345         git_header_html();
3346         git_print_page_nav('','', $head,undef,$head);
3347         git_print_header_div('summary', $project);
3348
3349         my @tagslist = git_get_tags_list();
3350         if (@tagslist) {
3351                 git_tags_body(\@tagslist);
3352         }
3353         git_footer_html();
3354 }
3355
3356 sub git_heads {
3357         my $head = git_get_head_hash($project);
3358         git_header_html();
3359         git_print_page_nav('','', $head,undef,$head);
3360         git_print_header_div('summary', $project);
3361
3362         my @headslist = git_get_heads_list();
3363         if (@headslist) {
3364                 git_heads_body(\@headslist, $head);
3365         }
3366         git_footer_html();
3367 }
3368
3369 sub git_blob_plain {
3370         my $expires;
3371
3372         if (!defined $hash) {
3373                 if (defined $file_name) {
3374                         my $base = $hash_base || git_get_head_hash($project);
3375                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3376                                 or die_error(undef, "Error lookup file");
3377                 } else {
3378                         die_error(undef, "No file name defined");
3379                 }
3380         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3381                 # blobs defined by non-textual hash id's can be cached
3382                 $expires = "+1d";
3383         }
3384
3385         my $type = shift;
3386         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3387                 or die_error(undef, "Couldn't cat $file_name, $hash");
3388
3389         $type ||= blob_mimetype($fd, $file_name);
3390
3391         # save as filename, even when no $file_name is given
3392         my $save_as = "$hash";
3393         if (defined $file_name) {
3394                 $save_as = $file_name;
3395         } elsif ($type =~ m/^text\//) {
3396                 $save_as .= '.txt';
3397         }
3398
3399         print $cgi->header(
3400                 -type => "$type",
3401                 -expires=>$expires,
3402                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3403         undef $/;
3404         binmode STDOUT, ':raw';
3405         print <$fd>;
3406         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3407         $/ = "\n";
3408         close $fd;
3409 }
3410
3411 sub git_blob {
3412         my $expires;
3413
3414         if (!defined $hash) {
3415                 if (defined $file_name) {
3416                         my $base = $hash_base || git_get_head_hash($project);
3417                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3418                                 or die_error(undef, "Error lookup file");
3419                 } else {
3420                         die_error(undef, "No file name defined");
3421                 }
3422         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3423                 # blobs defined by non-textual hash id's can be cached
3424                 $expires = "+1d";
3425         }
3426
3427         my ($have_blame) = gitweb_check_feature('blame');
3428         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3429                 or die_error(undef, "Couldn't cat $file_name, $hash");
3430         my $mimetype = blob_mimetype($fd, $file_name);
3431         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3432                 close $fd;
3433                 return git_blob_plain($mimetype);
3434         }
3435         # we can have blame only for text/* mimetype
3436         $have_blame &&= ($mimetype =~ m!^text/!);
3437
3438         git_header_html(undef, $expires);
3439         my $formats_nav = '';
3440         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3441                 if (defined $file_name) {
3442                         if ($have_blame) {
3443                                 $formats_nav .=
3444                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3445                                                                hash=>$hash, file_name=>$file_name)},
3446                                                 "blame") .
3447                                         " | ";
3448                         }
3449                         $formats_nav .=
3450                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3451                                                        hash=>$hash, file_name=>$file_name)},
3452                                         "history") .
3453                                 " | " .
3454                                 $cgi->a({-href => href(action=>"blob_plain",
3455                                                        hash=>$hash, file_name=>$file_name)},
3456                                         "raw") .
3457                                 " | " .
3458                                 $cgi->a({-href => href(action=>"blob",
3459                                                        hash_base=>"HEAD", file_name=>$file_name)},
3460                                         "HEAD");
3461                 } else {
3462                         $formats_nav .=
3463                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3464                 }
3465                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3466                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3467         } else {
3468                 print "<div class=\"page_nav\">\n" .
3469                       "<br/><br/></div>\n" .
3470                       "<div class=\"title\">$hash</div>\n";
3471         }
3472         git_print_page_path($file_name, "blob", $hash_base);
3473         print "<div class=\"page_body\">\n";
3474         if ($mimetype =~ m!^text/!) {
3475                 my $nr;
3476                 while (my $line = <$fd>) {
3477                         chomp $line;
3478                         $nr++;
3479                         $line = untabify($line);
3480                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3481                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3482                 }
3483         } elsif ($mimetype =~ m!^image/!) {
3484                 print qq!<img type="$mimetype"!;
3485                 if ($file_name) {
3486                         print qq! alt="$file_name" title="$file_name"!;
3487                 }
3488                 print qq! src="! .
3489                       href(action=>"blob_plain", hash=>$hash,
3490                            hash_base=>$hash_base, file_name=>$file_name) .
3491                       qq!" />\n!;
3492         }
3493         close $fd
3494                 or print "Reading blob failed.\n";
3495         print "</div>";
3496         git_footer_html();
3497 }
3498
3499 sub git_tree {
3500         my $have_snapshot = gitweb_have_snapshot();
3501
3502         if (!defined $hash_base) {
3503                 $hash_base = "HEAD";
3504         }
3505         if (!defined $hash) {
3506                 if (defined $file_name) {
3507                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3508                 } else {
3509                         $hash = $hash_base;
3510                 }
3511         }
3512         $/ = "\0";
3513         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3514                 or die_error(undef, "Open git-ls-tree failed");
3515         my @entries = map { chomp; $_ } <$fd>;
3516         close $fd or die_error(undef, "Reading tree failed");
3517         $/ = "\n";
3518
3519         my $refs = git_get_references();
3520         my $ref = format_ref_marker($refs, $hash_base);
3521         git_header_html();
3522         my $basedir = '';
3523         my ($have_blame) = gitweb_check_feature('blame');
3524         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3525                 my @views_nav = ();
3526                 if (defined $file_name) {
3527                         push @views_nav,
3528                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3529                                                        hash=>$hash, file_name=>$file_name)},
3530                                         "history"),
3531                                 $cgi->a({-href => href(action=>"tree",
3532                                                        hash_base=>"HEAD", file_name=>$file_name)},
3533                                         "HEAD"),
3534                 }
3535                 if ($have_snapshot) {
3536                         # FIXME: Should be available when we have no hash base as well.
3537                         push @views_nav,
3538                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3539                                         "snapshot");
3540                 }
3541                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3542                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3543         } else {
3544                 undef $hash_base;
3545                 print "<div class=\"page_nav\">\n";
3546                 print "<br/><br/></div>\n";
3547                 print "<div class=\"title\">$hash</div>\n";
3548         }
3549         if (defined $file_name) {
3550                 $basedir = $file_name;
3551                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3552                         $basedir .= '/';
3553                 }
3554         }
3555         git_print_page_path($file_name, 'tree', $hash_base);
3556         print "<div class=\"page_body\">\n";
3557         print "<table cellspacing=\"0\">\n";
3558         my $alternate = 1;
3559         # '..' (top directory) link if possible
3560         if (defined $hash_base &&
3561             defined $file_name && $file_name =~ m![^/]+$!) {
3562                 if ($alternate) {
3563                         print "<tr class=\"dark\">\n";
3564                 } else {
3565                         print "<tr class=\"light\">\n";
3566                 }
3567                 $alternate ^= 1;
3568
3569                 my $up = $file_name;
3570                 $up =~ s!/?[^/]+$!!;
3571                 undef $up unless $up;
3572                 # based on git_print_tree_entry
3573                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3574                 print '<td class="list">';
3575                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3576                                              file_name=>$up)},
3577                               "..");
3578                 print "</td>\n";
3579                 print "<td class=\"link\"></td>\n";
3580
3581                 print "</tr>\n";
3582         }
3583         foreach my $line (@entries) {
3584                 my %t = parse_ls_tree_line($line, -z => 1);
3585
3586                 if ($alternate) {
3587                         print "<tr class=\"dark\">\n";
3588                 } else {
3589                         print "<tr class=\"light\">\n";
3590                 }
3591                 $alternate ^= 1;
3592
3593                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3594
3595                 print "</tr>\n";
3596         }
3597         print "</table>\n" .
3598               "</div>";
3599         git_footer_html();
3600 }
3601
3602 sub git_snapshot {
3603         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3604         my $have_snapshot = (defined $ctype && defined $suffix);
3605         if (!$have_snapshot) {
3606                 die_error('403 Permission denied', "Permission denied");
3607         }
3608
3609         if (!defined $hash) {
3610                 $hash = git_get_head_hash($project);
3611         }
3612
3613         my $filename = to_utf8(basename($project)) . "-$hash.tar.$suffix";
3614
3615         print $cgi->header(
3616                 -type => "application/$ctype",
3617                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3618                 -status => '200 OK');
3619
3620         my $git = git_cmd_str();
3621         my $name = $project;
3622         $name =~ s/\047/\047\\\047\047/g;
3623         open my $fd, "-|",
3624         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3625                 or die_error(undef, "Execute git-tar-tree failed.");
3626         binmode STDOUT, ':raw';
3627         print <$fd>;
3628         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3629         close $fd;
3630
3631 }
3632
3633 sub git_log {
3634         my $head = git_get_head_hash($project);
3635         if (!defined $hash) {
3636                 $hash = $head;
3637         }
3638         if (!defined $page) {
3639                 $page = 0;
3640         }
3641         my $refs = git_get_references();
3642
3643         my @commitlist = parse_commits($hash, 101, (100 * $page));
3644
3645         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3646
3647         git_header_html();
3648         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3649
3650         if (!@commitlist) {
3651                 my %co = parse_commit($hash);
3652
3653                 git_print_header_div('summary', $project);
3654                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3655         }
3656         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3657         for (my $i = 0; $i <= $to; $i++) {
3658                 my %co = %{$commitlist[$i]};
3659                 next if !%co;
3660                 my $commit = $co{'id'};
3661                 my $ref = format_ref_marker($refs, $commit);
3662                 my %ad = parse_date($co{'author_epoch'});
3663                 git_print_header_div('commit',
3664                                "<span class=\"age\">$co{'age_string'}</span>" .
3665                                esc_html($co{'title'}) . $ref,
3666                                $commit);
3667                 print "<div class=\"title_text\">\n" .
3668                       "<div class=\"log_link\">\n" .
3669                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3670                       " | " .
3671                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3672                       " | " .
3673                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3674                       "<br/>\n" .
3675                       "</div>\n" .
3676                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3677                       "</div>\n";
3678
3679                 print "<div class=\"log_body\">\n";
3680                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3681                 print "</div>\n";
3682         }
3683         if ($#commitlist >= 100) {
3684                 print "<div class=\"page_nav\">\n";
3685                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3686                                -accesskey => "n", -title => "Alt-n"}, "next");
3687                 print "</div>\n";
3688         }
3689         git_footer_html();
3690 }
3691
3692 sub git_commit {
3693         $hash ||= $hash_base || "HEAD";
3694         my %co = parse_commit($hash);
3695         if (!%co) {
3696                 die_error(undef, "Unknown commit object");
3697         }
3698         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3699         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3700
3701         my $parent  = $co{'parent'};
3702         my $parents = $co{'parents'}; # listref
3703
3704         # we need to prepare $formats_nav before any parameter munging
3705         my $formats_nav;
3706         if (!defined $parent) {
3707                 # --root commitdiff
3708                 $formats_nav .= '(initial)';
3709         } elsif (@$parents == 1) {
3710                 # single parent commit
3711                 $formats_nav .=
3712                         '(parent: ' .
3713                         $cgi->a({-href => href(action=>"commit",
3714                                                hash=>$parent)},
3715                                 esc_html(substr($parent, 0, 7))) .
3716                         ')';
3717         } else {
3718                 # merge commit
3719                 $formats_nav .=
3720                         '(merge: ' .
3721                         join(' ', map {
3722                                 $cgi->a({-href => href(action=>"commitdiff",
3723                                                        hash=>$_)},
3724                                         esc_html(substr($_, 0, 7)));
3725                         } @$parents ) .
3726                         ')';
3727         }
3728
3729         if (!defined $parent) {
3730                 $parent = "--root";
3731         }
3732         my @difftree;
3733         if (@$parents <= 1) {
3734                 # difftree output is not printed for merges
3735                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3736                         @diff_opts, $parent, $hash, "--"
3737                                 or die_error(undef, "Open git-diff-tree failed");
3738                 @difftree = map { chomp; $_ } <$fd>;
3739                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3740         }
3741
3742         # non-textual hash id's can be cached
3743         my $expires;
3744         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3745                 $expires = "+1d";
3746         }
3747         my $refs = git_get_references();
3748         my $ref = format_ref_marker($refs, $co{'id'});
3749
3750         my $have_snapshot = gitweb_have_snapshot();
3751
3752         git_header_html(undef, $expires);
3753         git_print_page_nav('commit', '',
3754                            $hash, $co{'tree'}, $hash,
3755                            $formats_nav);
3756
3757         if (defined $co{'parent'}) {
3758                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3759         } else {
3760                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3761         }
3762         print "<div class=\"title_text\">\n" .
3763               "<table cellspacing=\"0\">\n";
3764         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3765               "<tr>" .
3766               "<td></td><td> $ad{'rfc2822'}";
3767         if ($ad{'hour_local'} < 6) {
3768                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3769                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3770         } else {
3771                 printf(" (%02d:%02d %s)",
3772                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3773         }
3774         print "</td>" .
3775               "</tr>\n";
3776         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3777         print "<tr><td></td><td> $cd{'rfc2822'}" .
3778               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3779               "</td></tr>\n";
3780         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3781         print "<tr>" .
3782               "<td>tree</td>" .
3783               "<td class=\"sha1\">" .
3784               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3785                        class => "list"}, $co{'tree'}) .
3786               "</td>" .
3787               "<td class=\"link\">" .
3788               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3789                       "tree");
3790         if ($have_snapshot) {
3791                 print " | " .
3792                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3793         }
3794         print "</td>" .
3795               "</tr>\n";
3796
3797         foreach my $par (@$parents) {
3798                 print "<tr>" .
3799                       "<td>parent</td>" .
3800                       "<td class=\"sha1\">" .
3801                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3802                                class => "list"}, $par) .
3803                       "</td>" .
3804                       "<td class=\"link\">" .
3805                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3806                       " | " .
3807                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3808                       "</td>" .
3809                       "</tr>\n";
3810         }
3811         print "</table>".
3812               "</div>\n";
3813
3814         print "<div class=\"page_body\">\n";
3815         git_print_log($co{'comment'});
3816         print "</div>\n";
3817
3818         if (@$parents <= 1) {
3819                 # do not output difftree/whatchanged for merges
3820                 git_difftree_body(\@difftree, $hash, $parent);
3821         }
3822
3823         git_footer_html();
3824 }
3825
3826 sub git_object {
3827         # object is defined by:
3828         # - hash or hash_base alone
3829         # - hash_base and file_name
3830         my $type;
3831
3832         # - hash or hash_base alone
3833         if ($hash || ($hash_base && !defined $file_name)) {
3834                 my $object_id = $hash || $hash_base;
3835
3836                 my $git_command = git_cmd_str();
3837                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3838                         or die_error('404 Not Found', "Object does not exist");
3839                 $type = <$fd>;
3840                 chomp $type;
3841                 close $fd
3842                         or die_error('404 Not Found', "Object does not exist");
3843
3844         # - hash_base and file_name
3845         } elsif ($hash_base && defined $file_name) {
3846                 $file_name =~ s,/+$,,;
3847
3848                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3849                         or die_error('404 Not Found', "Base object does not exist");
3850
3851                 # here errors should not hapen
3852                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3853                         or die_error(undef, "Open git-ls-tree failed");
3854                 my $line = <$fd>;
3855                 close $fd;
3856
3857                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3858                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3859                         die_error('404 Not Found', "File or directory for given base does not exist");
3860                 }
3861                 $type = $2;
3862                 $hash = $3;
3863         } else {
3864                 die_error('404 Not Found', "Not enough information to find object");
3865         }
3866
3867         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3868                                           hash=>$hash, hash_base=>$hash_base,
3869                                           file_name=>$file_name),
3870                              -status => '302 Found');
3871 }
3872
3873 sub git_blobdiff {
3874         my $format = shift || 'html';
3875
3876         my $fd;
3877         my @difftree;
3878         my %diffinfo;
3879         my $expires;
3880
3881         # preparing $fd and %diffinfo for git_patchset_body
3882         # new style URI
3883         if (defined $hash_base && defined $hash_parent_base) {
3884                 if (defined $file_name) {
3885                         # read raw output
3886                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3887                                 $hash_parent_base, $hash_base,
3888                                 "--", $file_name
3889                                 or die_error(undef, "Open git-diff-tree failed");
3890                         @difftree = map { chomp; $_ } <$fd>;
3891                         close $fd
3892                                 or die_error(undef, "Reading git-diff-tree failed");
3893                         @difftree
3894                                 or die_error('404 Not Found', "Blob diff not found");
3895
3896                 } elsif (defined $hash &&
3897                          $hash =~ /[0-9a-fA-F]{40}/) {
3898                         # try to find filename from $hash
3899
3900                         # read filtered raw output
3901                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3902                                 $hash_parent_base, $hash_base, "--"
3903                                 or die_error(undef, "Open git-diff-tree failed");
3904                         @difftree =
3905                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3906                                 # $hash == to_id
3907                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3908                                 map { chomp; $_ } <$fd>;
3909                         close $fd
3910                                 or die_error(undef, "Reading git-diff-tree failed");
3911                         @difftree
3912                                 or die_error('404 Not Found', "Blob diff not found");
3913
3914                 } else {
3915                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3916                 }
3917
3918                 if (@difftree > 1) {
3919                         die_error('404 Not Found', "Ambiguous blob diff specification");
3920                 }
3921
3922                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3923                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3924                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3925
3926                 $hash_parent ||= $diffinfo{'from_id'};
3927                 $hash        ||= $diffinfo{'to_id'};
3928
3929                 # non-textual hash id's can be cached
3930                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3931                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3932                         $expires = '+1d';
3933                 }
3934
3935                 # open patch output
3936                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3937                         '-p', $hash_parent_base, $hash_base,
3938                         "--", $file_name
3939                         or die_error(undef, "Open git-diff-tree failed");
3940         }
3941
3942         # old/legacy style URI
3943         if (!%diffinfo && # if new style URI failed
3944             defined $hash && defined $hash_parent) {
3945                 # fake git-diff-tree raw output
3946                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3947                 $diffinfo{'from_id'} = $hash_parent;
3948                 $diffinfo{'to_id'}   = $hash;
3949                 if (defined $file_name) {
3950                         if (defined $file_parent) {
3951                                 $diffinfo{'status'} = '2';
3952                                 $diffinfo{'from_file'} = $file_parent;
3953                                 $diffinfo{'to_file'}   = $file_name;
3954                         } else { # assume not renamed
3955                                 $diffinfo{'status'} = '1';
3956                                 $diffinfo{'from_file'} = $file_name;
3957                                 $diffinfo{'to_file'}   = $file_name;
3958                         }
3959                 } else { # no filename given
3960                         $diffinfo{'status'} = '2';
3961                         $diffinfo{'from_file'} = $hash_parent;
3962                         $diffinfo{'to_file'}   = $hash;
3963                 }
3964
3965                 # non-textual hash id's can be cached
3966                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3967                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3968                         $expires = '+1d';
3969                 }
3970
3971                 # open patch output
3972                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3973                         $hash_parent, $hash, "--"
3974                         or die_error(undef, "Open git-diff failed");
3975         } else  {
3976                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3977                         unless %diffinfo;
3978         }
3979
3980         # header
3981         if ($format eq 'html') {
3982                 my $formats_nav =
3983                         $cgi->a({-href => href(action=>"blobdiff_plain",
3984                                                hash=>$hash, hash_parent=>$hash_parent,
3985                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3986                                                file_name=>$file_name, file_parent=>$file_parent)},
3987                                 "raw");
3988                 git_header_html(undef, $expires);
3989                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3990                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3991                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3992                 } else {
3993                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3994                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3995                 }
3996                 if (defined $file_name) {
3997                         git_print_page_path($file_name, "blob", $hash_base);
3998                 } else {
3999                         print "<div class=\"page_path\"></div>\n";
4000                 }
4001
4002         } elsif ($format eq 'plain') {
4003                 print $cgi->header(
4004                         -type => 'text/plain',
4005                         -charset => 'utf-8',
4006                         -expires => $expires,
4007                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4008
4009                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4010
4011         } else {
4012                 die_error(undef, "Unknown blobdiff format");
4013         }
4014
4015         # patch
4016         if ($format eq 'html') {
4017                 print "<div class=\"page_body\">\n";
4018
4019                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4020                 close $fd;
4021
4022                 print "</div>\n"; # class="page_body"
4023                 git_footer_html();
4024
4025         } else {
4026                 while (my $line = <$fd>) {
4027                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4028                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4029
4030                         print $line;
4031
4032                         last if $line =~ m!^\+\+\+!;
4033                 }
4034                 local $/ = undef;
4035                 print <$fd>;
4036                 close $fd;
4037         }
4038 }
4039
4040 sub git_blobdiff_plain {
4041         git_blobdiff('plain');
4042 }
4043
4044 sub git_commitdiff {
4045         my $format = shift || 'html';
4046         $hash ||= $hash_base || "HEAD";
4047         my %co = parse_commit($hash);
4048         if (!%co) {
4049                 die_error(undef, "Unknown commit object");
4050         }
4051
4052         # we need to prepare $formats_nav before any parameter munging
4053         my $formats_nav;
4054         if ($format eq 'html') {
4055                 $formats_nav =
4056                         $cgi->a({-href => href(action=>"commitdiff_plain",
4057                                                hash=>$hash, hash_parent=>$hash_parent)},
4058                                 "raw");
4059
4060                 if (defined $hash_parent) {
4061                         # commitdiff with two commits given
4062                         my $hash_parent_short = $hash_parent;
4063                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4064                                 $hash_parent_short = substr($hash_parent, 0, 7);
4065                         }
4066                         $formats_nav .=
4067                                 ' (from: ' .
4068                                 $cgi->a({-href => href(action=>"commitdiff",
4069                                                        hash=>$hash_parent)},
4070                                         esc_html($hash_parent_short)) .
4071                                 ')';
4072                 } elsif (!$co{'parent'}) {
4073                         # --root commitdiff
4074                         $formats_nav .= ' (initial)';
4075                 } elsif (scalar @{$co{'parents'}} == 1) {
4076                         # single parent commit
4077                         $formats_nav .=
4078                                 ' (parent: ' .
4079                                 $cgi->a({-href => href(action=>"commitdiff",
4080                                                        hash=>$co{'parent'})},
4081                                         esc_html(substr($co{'parent'}, 0, 7))) .
4082                                 ')';
4083                 } else {
4084                         # merge commit
4085                         $formats_nav .=
4086                                 ' (merge: ' .
4087                                 join(' ', map {
4088                                         $cgi->a({-href => href(action=>"commitdiff",
4089                                                                hash=>$_)},
4090                                                 esc_html(substr($_, 0, 7)));
4091                                 } @{$co{'parents'}} ) .
4092                                 ')';
4093                 }
4094         }
4095
4096         if (!defined $hash_parent) {
4097                 $hash_parent = $co{'parent'} || '--root';
4098         }
4099
4100         # read commitdiff
4101         my $fd;
4102         my @difftree;
4103         if ($format eq 'html') {
4104                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4105                         "--no-commit-id", "--patch-with-raw", "--full-index",
4106                         $hash_parent, $hash, "--"
4107                         or die_error(undef, "Open git-diff-tree failed");
4108
4109                 while (my $line = <$fd>) {
4110                         chomp $line;
4111                         # empty line ends raw part of diff-tree output
4112                         last unless $line;
4113                         push @difftree, $line;
4114                 }
4115
4116         } elsif ($format eq 'plain') {
4117                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4118                         '-p', $hash_parent, $hash, "--"
4119                         or die_error(undef, "Open git-diff-tree failed");
4120
4121         } else {
4122                 die_error(undef, "Unknown commitdiff format");
4123         }
4124
4125         # non-textual hash id's can be cached
4126         my $expires;
4127         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4128                 $expires = "+1d";
4129         }
4130
4131         # write commit message
4132         if ($format eq 'html') {
4133                 my $refs = git_get_references();
4134                 my $ref = format_ref_marker($refs, $co{'id'});
4135
4136                 git_header_html(undef, $expires);
4137                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4138                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4139                 git_print_authorship(\%co);
4140                 print "<div class=\"page_body\">\n";
4141                 if (@{$co{'comment'}} > 1) {
4142                         print "<div class=\"log\">\n";
4143                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4144                         print "</div>\n"; # class="log"
4145                 }
4146
4147         } elsif ($format eq 'plain') {
4148                 my $refs = git_get_references("tags");
4149                 my $tagname = git_get_rev_name_tags($hash);
4150                 my $filename = basename($project) . "-$hash.patch";
4151
4152                 print $cgi->header(
4153                         -type => 'text/plain',
4154                         -charset => 'utf-8',
4155                         -expires => $expires,
4156                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4157                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4158                 print <<TEXT;
4159 From: $co{'author'}
4160 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4161 Subject: $co{'title'}
4162 TEXT
4163                 print "X-Git-Tag: $tagname\n" if $tagname;
4164                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4165
4166                 foreach my $line (@{$co{'comment'}}) {
4167                         print "$line\n";
4168                 }
4169                 print "---\n\n";
4170         }
4171
4172         # write patch
4173         if ($format eq 'html') {
4174                 git_difftree_body(\@difftree, $hash, $hash_parent);
4175                 print "<br/>\n";
4176
4177                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4178                 close $fd;
4179                 print "</div>\n"; # class="page_body"
4180                 git_footer_html();
4181
4182         } elsif ($format eq 'plain') {
4183                 local $/ = undef;
4184                 print <$fd>;
4185                 close $fd
4186                         or print "Reading git-diff-tree failed\n";
4187         }
4188 }
4189
4190 sub git_commitdiff_plain {
4191         git_commitdiff('plain');
4192 }
4193
4194 sub git_history {
4195         if (!defined $hash_base) {
4196                 $hash_base = git_get_head_hash($project);
4197         }
4198         if (!defined $page) {
4199                 $page = 0;
4200         }
4201         my $ftype;
4202         my %co = parse_commit($hash_base);
4203         if (!%co) {
4204                 die_error(undef, "Unknown commit object");
4205         }
4206
4207         my $refs = git_get_references();
4208         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4209
4210         if (!defined $hash && defined $file_name) {
4211                 $hash = git_get_hash_by_path($hash_base, $file_name);
4212         }
4213         if (defined $hash) {
4214                 $ftype = git_get_type($hash);
4215         }
4216
4217         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4218
4219         my $paging_nav = '';
4220         if ($page > 0) {
4221                 $paging_nav .=
4222                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4223                                                file_name=>$file_name)},
4224                                 "first");
4225                 $paging_nav .= " &sdot; " .
4226                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4227                                                file_name=>$file_name, page=>$page-1),
4228                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4229         } else {
4230                 $paging_nav .= "first";
4231                 $paging_nav .= " &sdot; prev";
4232         }
4233         if ($#commitlist >= 100) {
4234                 $paging_nav .= " &sdot; " .
4235                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4236                                                file_name=>$file_name, page=>$page+1),
4237                                  -accesskey => "n", -title => "Alt-n"}, "next");
4238         } else {
4239                 $paging_nav .= " &sdot; next";
4240         }
4241         my $next_link = '';
4242         if ($#commitlist >= 100) {
4243                 $next_link =
4244                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4245                                                file_name=>$file_name, page=>$page+1),
4246                                  -accesskey => "n", -title => "Alt-n"}, "next");
4247         }
4248
4249         git_header_html();
4250         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4251         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4252         git_print_page_path($file_name, $ftype, $hash_base);
4253
4254         git_history_body(\@commitlist, 0, 99,
4255                          $refs, $hash_base, $ftype, $next_link);
4256
4257         git_footer_html();
4258 }
4259
4260 sub git_search {
4261         my ($have_search) = gitweb_check_feature('search');
4262         if (!$have_search) {
4263                 die_error('403 Permission denied', "Permission denied");
4264         }
4265         if (!defined $searchtext) {
4266                 die_error(undef, "Text field empty");
4267         }
4268         if (!defined $hash) {
4269                 $hash = git_get_head_hash($project);
4270         }
4271         my %co = parse_commit($hash);
4272         if (!%co) {
4273                 die_error(undef, "Unknown commit object");
4274         }
4275         if (!defined $page) {
4276                 $page = 0;
4277         }
4278
4279         $searchtype ||= 'commit';
4280         if ($searchtype eq 'pickaxe') {
4281                 # pickaxe may take all resources of your box and run for several minutes
4282                 # with every query - so decide by yourself how public you make this feature
4283                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4284                 if (!$have_pickaxe) {
4285                         die_error('403 Permission denied', "Permission denied");
4286                 }
4287         }
4288
4289         git_header_html();
4290
4291         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4292                 my $greptype;
4293                 if ($searchtype eq 'commit') {
4294                         $greptype = "--grep=";
4295                 } elsif ($searchtype eq 'author') {
4296                         $greptype = "--author=";
4297                 } elsif ($searchtype eq 'committer') {
4298                         $greptype = "--committer=";
4299                 }
4300                 $greptype .= $searchtext;
4301                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4302
4303                 my $paging_nav = '';
4304                 if ($page > 0) {
4305                         $paging_nav .=
4306                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4307                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4308                                         "first");
4309                         $paging_nav .= " &sdot; " .
4310                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4311                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4312                                                        page=>$page-1),
4313                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4314                 } else {
4315                         $paging_nav .= "first";
4316                         $paging_nav .= " &sdot; prev";
4317                 }
4318                 if ($#commitlist >= 100) {
4319                         $paging_nav .= " &sdot; " .
4320                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4321                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4322                                                        page=>$page+1),
4323                                          -accesskey => "n", -title => "Alt-n"}, "next");
4324                 } else {
4325                         $paging_nav .= " &sdot; next";
4326                 }
4327                 my $next_link = '';
4328                 if ($#commitlist >= 100) {
4329                         $next_link =
4330                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4331                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4332                                                        page=>$page+1),
4333                                          -accesskey => "n", -title => "Alt-n"}, "next");
4334                 }
4335
4336                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4337                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4338                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4339         }
4340
4341         if ($searchtype eq 'pickaxe') {
4342                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4343                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4344
4345                 print "<table cellspacing=\"0\">\n";
4346                 my $alternate = 1;
4347                 $/ = "\n";
4348                 my $git_command = git_cmd_str();
4349                 open my $fd, "-|", "$git_command rev-list $hash | " .
4350                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4351                 undef %co;
4352                 my @files;
4353                 while (my $line = <$fd>) {
4354                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4355                                 my %set;
4356                                 $set{'file'} = $6;
4357                                 $set{'from_id'} = $3;
4358                                 $set{'to_id'} = $4;
4359                                 $set{'id'} = $set{'to_id'};
4360                                 if ($set{'id'} =~ m/0{40}/) {
4361                                         $set{'id'} = $set{'from_id'};
4362                                 }
4363                                 if ($set{'id'} =~ m/0{40}/) {
4364                                         next;
4365                                 }
4366                                 push @files, \%set;
4367                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4368                                 if (%co) {
4369                                         if ($alternate) {
4370                                                 print "<tr class=\"dark\">\n";
4371                                         } else {
4372                                                 print "<tr class=\"light\">\n";
4373                                         }
4374                                         $alternate ^= 1;
4375                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4376                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4377                                               "<td>" .
4378                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4379                                                       -class => "list subject"},
4380                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4381                                         while (my $setref = shift @files) {
4382                                                 my %set = %$setref;
4383                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4384                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4385                                                               -class => "list"},
4386                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4387                                                       "<br/>\n";
4388                                         }
4389                                         print "</td>\n" .
4390                                               "<td class=\"link\">" .
4391                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4392                                               " | " .
4393                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4394                                         print "</td>\n" .
4395                                               "</tr>\n";
4396                                 }
4397                                 %co = parse_commit($1);
4398                         }
4399                 }
4400                 close $fd;
4401
4402                 print "</table>\n";
4403         }
4404         git_footer_html();
4405 }
4406
4407 sub git_search_help {
4408         git_header_html();
4409         git_print_page_nav('','', $hash,$hash,$hash);
4410         print <<EOT;
4411 <dl>
4412 <dt><b>commit</b></dt>
4413 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4414 <dt><b>author</b></dt>
4415 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4416 <dt><b>committer</b></dt>
4417 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4418 EOT
4419         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4420         if ($have_pickaxe) {
4421                 print <<EOT;
4422 <dt><b>pickaxe</b></dt>
4423 <dd>All commits that caused the string to appear or disappear from any file (changes that
4424 added, removed or "modified" the string) will be listed. This search can take a while and
4425 takes a lot of strain on the server, so please use it wisely.</dd>
4426 EOT
4427         }
4428         print "</dl>\n";
4429         git_footer_html();
4430 }
4431
4432 sub git_shortlog {
4433         my $head = git_get_head_hash($project);
4434         if (!defined $hash) {
4435                 $hash = $head;
4436         }
4437         if (!defined $page) {
4438                 $page = 0;
4439         }
4440         my $refs = git_get_references();
4441
4442         my @commitlist = parse_commits($hash, 101, (100 * $page));
4443
4444         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4445         my $next_link = '';
4446         if ($#commitlist >= 100) {
4447                 $next_link =
4448                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4449                                  -accesskey => "n", -title => "Alt-n"}, "next");
4450         }
4451
4452         git_header_html();
4453         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4454         git_print_header_div('summary', $project);
4455
4456         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4457
4458         git_footer_html();
4459 }
4460
4461 ## ......................................................................
4462 ## feeds (RSS, Atom; OPML)
4463
4464 sub git_feed {
4465         my $format = shift || 'atom';
4466         my ($have_blame) = gitweb_check_feature('blame');
4467
4468         # Atom: http://www.atomenabled.org/developers/syndication/
4469         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4470         if ($format ne 'rss' && $format ne 'atom') {
4471                 die_error(undef, "Unknown web feed format");
4472         }
4473
4474         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4475         my $head = $hash || 'HEAD';
4476         my @commitlist = parse_commits($head, 150);
4477
4478         my %latest_commit;
4479         my %latest_date;
4480         my $content_type = "application/$format+xml";
4481         if (defined $cgi->http('HTTP_ACCEPT') &&
4482                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4483                 # browser (feed reader) prefers text/xml
4484                 $content_type = 'text/xml';
4485         }
4486         if (defined($commitlist[0])) {
4487                 %latest_commit = %{$commitlist[0]};
4488                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4489                 print $cgi->header(
4490                         -type => $content_type,
4491                         -charset => 'utf-8',
4492                         -last_modified => $latest_date{'rfc2822'});
4493         } else {
4494                 print $cgi->header(
4495                         -type => $content_type,
4496                         -charset => 'utf-8');
4497         }
4498
4499         # Optimization: skip generating the body if client asks only
4500         # for Last-Modified date.
4501         return if ($cgi->request_method() eq 'HEAD');
4502
4503         # header variables
4504         my $title = "$site_name - $project/$action";
4505         my $feed_type = 'log';
4506         if (defined $hash) {
4507                 $title .= " - '$hash'";
4508                 $feed_type = 'branch log';
4509                 if (defined $file_name) {
4510                         $title .= " :: $file_name";
4511                         $feed_type = 'history';
4512                 }
4513         } elsif (defined $file_name) {
4514                 $title .= " - $file_name";
4515                 $feed_type = 'history';
4516         }
4517         $title .= " $feed_type";
4518         my $descr = git_get_project_description($project);
4519         if (defined $descr) {
4520                 $descr = esc_html($descr);
4521         } else {
4522                 $descr = "$project " .
4523                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4524                          " feed";
4525         }
4526         my $owner = git_get_project_owner($project);
4527         $owner = esc_html($owner);
4528
4529         #header
4530         my $alt_url;
4531         if (defined $file_name) {
4532                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4533         } elsif (defined $hash) {
4534                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4535         } else {
4536                 $alt_url = href(-full=>1, action=>"summary");
4537         }
4538         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4539         if ($format eq 'rss') {
4540                 print <<XML;
4541 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4542 <channel>
4543 XML
4544                 print "<title>$title</title>\n" .
4545                       "<link>$alt_url</link>\n" .
4546                       "<description>$descr</description>\n" .
4547                       "<language>en</language>\n";
4548         } elsif ($format eq 'atom') {
4549                 print <<XML;
4550 <feed xmlns="http://www.w3.org/2005/Atom">
4551 XML
4552                 print "<title>$title</title>\n" .
4553                       "<subtitle>$descr</subtitle>\n" .
4554                       '<link rel="alternate" type="text/html" href="' .
4555                       $alt_url . '" />' . "\n" .
4556                       '<link rel="self" type="' . $content_type . '" href="' .
4557                       $cgi->self_url() . '" />' . "\n" .
4558                       "<id>" . href(-full=>1) . "</id>\n" .
4559                       # use project owner for feed author
4560                       "<author><name>$owner</name></author>\n";
4561                 if (defined $favicon) {
4562                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4563                 }
4564                 if (defined $logo_url) {
4565                         # not twice as wide as tall: 72 x 27 pixels
4566                         print "<logo>" . esc_url($logo) . "</logo>\n";
4567                 }
4568                 if (! %latest_date) {
4569                         # dummy date to keep the feed valid until commits trickle in:
4570                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4571                 } else {
4572                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4573                 }
4574         }
4575
4576         # contents
4577         for (my $i = 0; $i <= $#commitlist; $i++) {
4578                 my %co = %{$commitlist[$i]};
4579                 my $commit = $co{'id'};
4580                 # we read 150, we always show 30 and the ones more recent than 48 hours
4581                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4582                         last;
4583                 }
4584                 my %cd = parse_date($co{'author_epoch'});
4585
4586                 # get list of changed files
4587                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4588                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4589                         or next;
4590                 my @difftree = map { chomp; $_ } <$fd>;
4591                 close $fd
4592                         or next;
4593
4594                 # print element (entry, item)
4595                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4596                 if ($format eq 'rss') {
4597                         print "<item>\n" .
4598                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4599                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4600                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4601                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4602                               "<link>$co_url</link>\n" .
4603                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4604                               "<content:encoded>" .
4605                               "<![CDATA[\n";
4606                 } elsif ($format eq 'atom') {
4607                         print "<entry>\n" .
4608                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4609                               "<updated>$cd{'iso-8601'}</updated>\n" .
4610                               "<author>\n" .
4611                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4612                         if ($co{'author_email'}) {
4613                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4614                         }
4615                         print "</author>\n" .
4616                               # use committer for contributor
4617                               "<contributor>\n" .
4618                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4619                         if ($co{'committer_email'}) {
4620                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4621                         }
4622                         print "</contributor>\n" .
4623                               "<published>$cd{'iso-8601'}</published>\n" .
4624                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4625                               "<id>$co_url</id>\n" .
4626                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4627                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4628                 }
4629                 my $comment = $co{'comment'};
4630                 print "<pre>\n";
4631                 foreach my $line (@$comment) {
4632                         $line = esc_html($line);
4633                         print "$line\n";
4634                 }
4635                 print "</pre><ul>\n";
4636                 foreach my $difftree_line (@difftree) {
4637                         my %difftree = parse_difftree_raw_line($difftree_line);
4638                         next if !$difftree{'from_id'};
4639
4640                         my $file = $difftree{'file'} || $difftree{'to_file'};
4641
4642                         print "<li>" .
4643                               "[" .
4644                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4645                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4646                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4647                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4648                                       -title => "diff"}, 'D');
4649                         if ($have_blame) {
4650                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4651                                                              file_name=>$file, hash_base=>$commit),
4652                                               -title => "blame"}, 'B');
4653                         }
4654                         # if this is not a feed of a file history
4655                         if (!defined $file_name || $file_name ne $file) {
4656                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4657                                                              file_name=>$file, hash=>$commit),
4658                                               -title => "history"}, 'H');
4659                         }
4660                         $file = esc_path($file);
4661                         print "] ".
4662                               "$file</li>\n";
4663                 }
4664                 if ($format eq 'rss') {
4665                         print "</ul>]]>\n" .
4666                               "</content:encoded>\n" .
4667                               "</item>\n";
4668                 } elsif ($format eq 'atom') {
4669                         print "</ul>\n</div>\n" .
4670                               "</content>\n" .
4671                               "</entry>\n";
4672                 }
4673         }
4674
4675         # end of feed
4676         if ($format eq 'rss') {
4677                 print "</channel>\n</rss>\n";
4678         }       elsif ($format eq 'atom') {
4679                 print "</feed>\n";
4680         }
4681 }
4682
4683 sub git_rss {
4684         git_feed('rss');
4685 }
4686
4687 sub git_atom {
4688         git_feed('atom');
4689 }
4690
4691 sub git_opml {
4692         my @list = git_get_projects_list();
4693
4694         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4695         print <<XML;
4696 <?xml version="1.0" encoding="utf-8"?>
4697 <opml version="1.0">
4698 <head>
4699   <title>$site_name OPML Export</title>
4700 </head>
4701 <body>
4702 <outline text="git RSS feeds">
4703 XML
4704
4705         foreach my $pr (@list) {
4706                 my %proj = %$pr;
4707                 my $head = git_get_head_hash($proj{'path'});
4708                 if (!defined $head) {
4709                         next;
4710                 }
4711                 $git_dir = "$projectroot/$proj{'path'}";
4712                 my %co = parse_commit($head);
4713                 if (!%co) {
4714                         next;
4715                 }
4716
4717                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4718                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4719                 my $html = "$my_url?p=$proj{'path'};a=summary";
4720                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4721         }
4722         print <<XML;
4723 </outline>
4724 </body>
4725 </opml>
4726 XML
4727 }