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

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