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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56
  57 # URI of GIT logo (72x27 size)
  58 our $logo = "++GITWEB_LOGO++";
  59 # URI of GIT favicon, assumed to be image/png type
  60 our $favicon = "++GITWEB_FAVICON++";
  61
  62 # URI and label (title) of GIT logo link
  63 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  64 #our $logo_label = "git documentation";
  65 our $logo_url = "http://git.or.cz/";
  66 our $logo_label = "git homepage";
  67
  68 # source of projects list
  69 our $projects_list = "++GITWEB_LIST++";
  70
  71 # show repository only if this file exists
  72 # (only effective if this variable evaluates to true)
  73 our $export_ok = "++GITWEB_EXPORT_OK++";
  74
  75 # only allow viewing of repositories also shown on the overview page
  76 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  77
  78 # list of git base URLs used for URL to where fetch project from,
  79 # i.e. full URL is "$git_base_url/$project"
  80 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  81
  82 # default blob_plain mimetype and default charset for text/plain blob
  83 our $default_blob_plain_mimetype = 'text/plain';
  84 our $default_text_plain_charset  = undef;
  85
  86 # file to use for guessing MIME types before trying /etc/mime.types
  87 # (relative to the current git repository)
  88 our $mimetypes_file = undef;
  89
  90 # You define site-wide feature defaults here; override them with
  91 # $GITWEB_CONFIG as necessary.
  92 our %feature = (
  93         # feature => {
  94         #       'sub' => feature-sub (subroutine),
  95         #       'override' => allow-override (boolean),
  96         #       'default' => [ default options...] (array reference)}
  97         #
  98         # if feature is overridable (it means that allow-override has true value,
  99         # then feature-sub will be called with default options as parameters;
 100         # return value of feature-sub indicates if to enable specified feature
 101         #
 102         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 103
 104         # Enable the 'blame' blob view, showing the last commit that modified
 105         # each line in the file. This can be very CPU-intensive.
 106
 107         # To enable system wide have in $GITWEB_CONFIG
 108         # $feature{'blame'}{'default'} = [1];
 109         # To have project specific config enable override in $GITWEB_CONFIG
 110         # $feature{'blame'}{'override'} = 1;
 111         # and in project config gitweb.blame = 0|1;
 112         'blame' => {
 113                 'sub' => \&feature_blame,
 114                 'override' => 0,
 115                 'default' => [0]},
 116
 117         # Enable the 'snapshot' link, providing a compressed tarball of any
 118         # tree. This can potentially generate high traffic if you have large
 119         # project.
 120
 121         # To disable system wide have in $GITWEB_CONFIG
 122         # $feature{'snapshot'}{'default'} = [undef];
 123         # To have project specific config enable override in $GITWEB_CONFIG
 124         # $feature{'blame'}{'override'} = 1;
 125         # and in project config gitweb.snapshot = none|gzip|bzip2;
 126         'snapshot' => {
 127                 'sub' => \&feature_snapshot,
 128                 'override' => 0,
 129                 #         => [content-encoding, suffix, program]
 130                 'default' => ['x-gzip', 'gz', 'gzip']},
 131
 132         # Enable the pickaxe search, which will list the commits that modified
 133         # a given string in a file. This can be practical and quite faster
 134         # alternative to 'blame', but still potentially CPU-intensive.
 135
 136         # To enable system wide have in $GITWEB_CONFIG
 137         # $feature{'pickaxe'}{'default'} = [1];
 138         # To have project specific config enable override in $GITWEB_CONFIG
 139         # $feature{'pickaxe'}{'override'} = 1;
 140         # and in project config gitweb.pickaxe = 0|1;
 141         'pickaxe' => {
 142                 'sub' => \&feature_pickaxe,
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Make gitweb use an alternative format of the URLs which can be
 147         # more readable and natural-looking: project name is embedded
 148         # directly in the path and the query string contains other
 149         # auxiliary information. All gitweb installations recognize
 150         # URL in either format; this configures in which formats gitweb
 151         # generates links.
 152
 153         # To enable system wide have in $GITWEB_CONFIG
 154         # $feature{'pathinfo'}{'default'} = [1];
 155         # Project specific override is not supported.
 156
 157         # Note that you will need to change the default location of CSS,
 158         # favicon, logo and possibly other files to an absolute URL. Also,
 159         # if gitweb.cgi serves as your indexfile, you will need to force
 160         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 161         'pathinfo' => {
 162                 'override' => 0,
 163                 'default' => [0]},
 164
 165         # Make gitweb consider projects in project root subdirectories
 166         # to be forks of existing projects. Given project $projname.git,
 167         # projects matching $projname/*.git will not be shown in the main
 168         # projects list, instead a '+' mark will be added to $projname
 169         # there and a 'forks' view will be enabled for the project, listing
 170         # all the forks. This feature is supported only if project list
 171         # is taken from a directory, not file.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'forks'}{'default'} = [1];
 175         # Project specific override is not supported.
 176         'forks' => {
 177                 'override' => 0,
 178                 'default' => [0]},
 179 );
 180
 181 sub gitweb_check_feature {
 182         my ($name) = @_;
 183         return unless exists $feature{$name};
 184         my ($sub, $override, @defaults) = (
 185                 $feature{$name}{'sub'},
 186                 $feature{$name}{'override'},
 187                 @{$feature{$name}{'default'}});
 188         if (!$override) { return @defaults; }
 189         if (!defined $sub) {
 190                 warn "feature $name is not overrideable";
 191                 return @defaults;
 192         }
 193         return $sub->(@defaults);
 194 }
 195
 196 sub feature_blame {
 197         my ($val) = git_get_project_config('blame', '--bool');
 198
 199         if ($val eq 'true') {
 200                 return 1;
 201         } elsif ($val eq 'false') {
 202                 return 0;
 203         }
 204
 205         return $_[0];
 206 }
 207
 208 sub feature_snapshot {
 209         my ($ctype, $suffix, $command) = @_;
 210
 211         my ($val) = git_get_project_config('snapshot');
 212
 213         if ($val eq 'gzip') {
 214                 return ('x-gzip', 'gz', 'gzip');
 215         } elsif ($val eq 'bzip2') {
 216                 return ('x-bzip2', 'bz2', 'bzip2');
 217         } elsif ($val eq 'none') {
 218                 return ();
 219         }
 220
 221         return ($ctype, $suffix, $command);
 222 }
 223
 224 sub gitweb_have_snapshot {
 225         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 226         my $have_snapshot = (defined $ctype && defined $suffix);
 227
 228         return $have_snapshot;
 229 }
 230
 231 sub feature_pickaxe {
 232         my ($val) = git_get_project_config('pickaxe', '--bool');
 233
 234         if ($val eq 'true') {
 235                 return (1);
 236         } elsif ($val eq 'false') {
 237                 return (0);
 238         }
 239
 240         return ($_[0]);
 241 }
 242
 243 # checking HEAD file with -e is fragile if the repository was
 244 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 245 # and then pruned.
 246 sub check_head_link {
 247         my ($dir) = @_;
 248         my $headfile = "$dir/HEAD";
 249         return ((-e $headfile) ||
 250                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 251 }
 252
 253 sub check_export_ok {
 254         my ($dir) = @_;
 255         return (check_head_link($dir) &&
 256                 (!$export_ok || -e "$dir/$export_ok"));
 257 }
 258
 259 # rename detection options for git-diff and git-diff-tree
 260 # - default is '-M', with the cost proportional to
 261 #   (number of removed files) * (number of new files).
 262 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 263 #   (number of changed files + number of removed files) * (number of new files)
 264 # - even more costly is '-C', '--find-copies-harder' with cost
 265 #   (number of files in the original tree) * (number of new files)
 266 # - one might want to include '-B' option, e.g. '-B', '-M'
 267 our @diff_opts = ('-M'); # taken from git_commit
 268
 269 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 270 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 271
 272 # version of the core git binary
 273 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 274
 275 $projects_list ||= $projectroot;
 276
 277 # ======================================================================
 278 # input validation and dispatch
 279 our $action = $cgi->param('a');
 280 if (defined $action) {
 281         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 282                 die_error(undef, "Invalid action parameter");
 283         }
 284 }
 285
 286 # parameters which are pathnames
 287 our $project = $cgi->param('p');
 288 if (defined $project) {
 289         if (!validate_pathname($project) ||
 290             !(-d "$projectroot/$project") ||
 291             !check_head_link("$projectroot/$project") ||
 292             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 293             ($strict_export && !project_in_list($project))) {
 294                 undef $project;
 295                 die_error(undef, "No such project");
 296         }
 297 }
 298
 299 our $file_name = $cgi->param('f');
 300 if (defined $file_name) {
 301         if (!validate_pathname($file_name)) {
 302                 die_error(undef, "Invalid file parameter");
 303         }
 304 }
 305
 306 our $file_parent = $cgi->param('fp');
 307 if (defined $file_parent) {
 308         if (!validate_pathname($file_parent)) {
 309                 die_error(undef, "Invalid file parent parameter");
 310         }
 311 }
 312
 313 # parameters which are refnames
 314 our $hash = $cgi->param('h');
 315 if (defined $hash) {
 316         if (!validate_refname($hash)) {
 317                 die_error(undef, "Invalid hash parameter");
 318         }
 319 }
 320
 321 our $hash_parent = $cgi->param('hp');
 322 if (defined $hash_parent) {
 323         if (!validate_refname($hash_parent)) {
 324                 die_error(undef, "Invalid hash parent parameter");
 325         }
 326 }
 327
 328 our $hash_base = $cgi->param('hb');
 329 if (defined $hash_base) {
 330         if (!validate_refname($hash_base)) {
 331                 die_error(undef, "Invalid hash base parameter");
 332         }
 333 }
 334
 335 our $hash_parent_base = $cgi->param('hpb');
 336 if (defined $hash_parent_base) {
 337         if (!validate_refname($hash_parent_base)) {
 338                 die_error(undef, "Invalid hash parent base parameter");
 339         }
 340 }
 341
 342 # other parameters
 343 our $page = $cgi->param('pg');
 344 if (defined $page) {
 345         if ($page =~ m/[^0-9]/) {
 346                 die_error(undef, "Invalid page parameter");
 347         }
 348 }
 349
 350 our $searchtext = $cgi->param('s');
 351 if (defined $searchtext) {
 352         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 353                 die_error(undef, "Invalid search parameter");
 354         }
 355         $searchtext = quotemeta $searchtext;
 356 }
 357
 358 our $searchtype = $cgi->param('st');
 359 if (defined $searchtype) {
 360         if ($searchtype =~ m/[^a-z]/) {
 361                 die_error(undef, "Invalid searchtype parameter");
 362         }
 363 }
 364
 365 # now read PATH_INFO and use it as alternative to parameters
 366 sub evaluate_path_info {
 367         return if defined $project;
 368         my $path_info = $ENV{"PATH_INFO"};
 369         return if !$path_info;
 370         $path_info =~ s,^/+,,;
 371         return if !$path_info;
 372         # find which part of PATH_INFO is project
 373         $project = $path_info;
 374         $project =~ s,/+$,,;
 375         while ($project && !check_head_link("$projectroot/$project")) {
 376                 $project =~ s,/*[^/]*$,,;
 377         }
 378         # validate project
 379         $project = validate_pathname($project);
 380         if (!$project ||
 381             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 382             ($strict_export && !project_in_list($project))) {
 383                 undef $project;
 384                 return;
 385         }
 386         # do not change any parameters if an action is given using the query string
 387         return if $action;
 388         $path_info =~ s,^$project/*,,;
 389         my ($refname, $pathname) = split(/:/, $path_info, 2);
 390         if (defined $pathname) {
 391                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 392                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 393                 $pathname =~ s,^/+,,;
 394                 if (!$pathname || substr($pathname, -1) eq "/") {
 395                         $action  ||= "tree";
 396                         $pathname =~ s,/$,,;
 397                 } else {
 398                         $action  ||= "blob_plain";
 399                 }
 400                 $hash_base ||= validate_refname($refname);
 401                 $file_name ||= validate_pathname($pathname);
 402         } elsif (defined $refname) {
 403                 # we got "project.git/branch"
 404                 $action ||= "shortlog";
 405                 $hash   ||= validate_refname($refname);
 406         }
 407 }
 408 evaluate_path_info();
 409
 410 # path to the current git repository
 411 our $git_dir;
 412 $git_dir = "$projectroot/$project" if $project;
 413
 414 # dispatch
 415 my %actions = (
 416         "blame" => \&git_blame2,
 417         "blobdiff" => \&git_blobdiff,
 418         "blobdiff_plain" => \&git_blobdiff_plain,
 419         "blob" => \&git_blob,
 420         "blob_plain" => \&git_blob_plain,
 421         "commitdiff" => \&git_commitdiff,
 422         "commitdiff_plain" => \&git_commitdiff_plain,
 423         "commit" => \&git_commit,
 424         "forks" => \&git_forks,
 425         "heads" => \&git_heads,
 426         "history" => \&git_history,
 427         "log" => \&git_log,
 428         "rss" => \&git_rss,
 429         "search" => \&git_search,
 430         "search_help" => \&git_search_help,
 431         "shortlog" => \&git_shortlog,
 432         "summary" => \&git_summary,
 433         "tag" => \&git_tag,
 434         "tags" => \&git_tags,
 435         "tree" => \&git_tree,
 436         "snapshot" => \&git_snapshot,
 437         # those below don't need $project
 438         "opml" => \&git_opml,
 439         "project_list" => \&git_project_list,
 440         "project_index" => \&git_project_index,
 441 );
 442
 443 if (defined $project) {
 444         $action ||= 'summary';
 445 } else {
 446         $action ||= 'project_list';
 447 }
 448 if (!defined($actions{$action})) {
 449         die_error(undef, "Unknown action");
 450 }
 451 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 452     !$project) {
 453         die_error(undef, "Project needed");
 454 }
 455 $actions{$action}->();
 456 exit;
 457
 458 ## ======================================================================
 459 ## action links
 460
 461 sub href(%) {
 462         my %params = @_;
 463         my $href = $my_uri;
 464
 465         # XXX: Warning: If you touch this, check the search form for updating,
 466         # too.
 467
 468         my @mapping = (
 469                 project => "p",
 470                 action => "a",
 471                 file_name => "f",
 472                 file_parent => "fp",
 473                 hash => "h",
 474                 hash_parent => "hp",
 475                 hash_base => "hb",
 476                 hash_parent_base => "hpb",
 477                 page => "pg",
 478                 order => "o",
 479                 searchtext => "s",
 480                 searchtype => "st",
 481         );
 482         my %mapping = @mapping;
 483
 484         $params{'project'} = $project unless exists $params{'project'};
 485
 486         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 487         if ($use_pathinfo) {
 488                 # use PATH_INFO for project name
 489                 $href .= "/$params{'project'}" if defined $params{'project'};
 490                 delete $params{'project'};
 491
 492                 # Summary just uses the project path URL
 493                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 494                         delete $params{'action'};
 495                 }
 496         }
 497
 498         # now encode the parameters explicitly
 499         my @result = ();
 500         for (my $i = 0; $i < @mapping; $i += 2) {
 501                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 502                 if (defined $params{$name}) {
 503                         push @result, $symbol . "=" . esc_param($params{$name});
 504                 }
 505         }
 506         $href .= "?" . join(';', @result) if scalar @result;
 507
 508         return $href;
 509 }
 510
 511
 512 ## ======================================================================
 513 ## validation, quoting/unquoting and escaping
 514
 515 sub validate_pathname {
 516         my $input = shift || return undef;
 517
 518         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 519         # at the beginning, at the end, and between slashes.
 520         # also this catches doubled slashes
 521         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 522                 return undef;
 523         }
 524         # no null characters
 525         if ($input =~ m!\0!) {
 526                 return undef;
 527         }
 528         return $input;
 529 }
 530
 531 sub validate_refname {
 532         my $input = shift || return undef;
 533
 534         # textual hashes are O.K.
 535         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 536                 return $input;
 537         }
 538         # it must be correct pathname
 539         $input = validate_pathname($input)
 540                 or return undef;
 541         # restrictions on ref name according to git-check-ref-format
 542         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 543                 return undef;
 544         }
 545         return $input;
 546 }
 547
 548 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 549 sub to_utf8 {
 550         my $str = shift;
 551         return decode("utf8", $str, Encode::FB_DEFAULT);
 552 }
 553
 554 # quote unsafe chars, but keep the slash, even when it's not
 555 # correct, but quoted slashes look too horrible in bookmarks
 556 sub esc_param {
 557         my $str = shift;
 558         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 559         $str =~ s/\+/%2B/g;
 560         $str =~ s/ /\+/g;
 561         return $str;
 562 }
 563
 564 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 565 sub esc_url {
 566         my $str = shift;
 567         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 568         $str =~ s/\+/%2B/g;
 569         $str =~ s/ /\+/g;
 570         return $str;
 571 }
 572
 573 # replace invalid utf8 character with SUBSTITUTION sequence
 574 sub esc_html ($;%) {
 575         my $str = shift;
 576         my %opts = @_;
 577
 578         $str = to_utf8($str);
 579         $str = escapeHTML($str);
 580         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 581         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 582         if ($opts{'-nbsp'}) {
 583                 $str =~ s/ /&nbsp;/g;
 584         }
 585         return $str;
 586 }
 587
 588 # git may return quoted and escaped filenames
 589 sub unquote {
 590         my $str = shift;
 591         if ($str =~ m/^"(.*)"$/) {
 592                 $str = $1;
 593                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 594         }
 595         return $str;
 596 }
 597
 598 # escape tabs (convert tabs to spaces)
 599 sub untabify {
 600         my $line = shift;
 601
 602         while ((my $pos = index($line, "\t")) != -1) {
 603                 if (my $count = (8 - ($pos % 8))) {
 604                         my $spaces = ' ' x $count;
 605                         $line =~ s/\t/$spaces/;
 606                 }
 607         }
 608
 609         return $line;
 610 }
 611
 612 sub project_in_list {
 613         my $project = shift;
 614         my @list = git_get_projects_list();
 615         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 616 }
 617
 618 ## ----------------------------------------------------------------------
 619 ## HTML aware string manipulation
 620
 621 sub chop_str {
 622         my $str = shift;
 623         my $len = shift;
 624         my $add_len = shift || 10;
 625
 626         # allow only $len chars, but don't cut a word if it would fit in $add_len
 627         # if it doesn't fit, cut it if it's still longer than the dots we would add
 628         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 629         my $body = $1;
 630         my $tail = $2;
 631         if (length($tail) > 4) {
 632                 $tail = " ...";
 633                 $body =~ s/&[^;]*$//; # remove chopped character entities
 634         }
 635         return "$body$tail";
 636 }
 637
 638 ## ----------------------------------------------------------------------
 639 ## functions returning short strings
 640
 641 # CSS class for given age value (in seconds)
 642 sub age_class {
 643         my $age = shift;
 644
 645         if ($age < 60*60*2) {
 646                 return "age0";
 647         } elsif ($age < 60*60*24*2) {
 648                 return "age1";
 649         } else {
 650                 return "age2";
 651         }
 652 }
 653
 654 # convert age in seconds to "nn units ago" string
 655 sub age_string {
 656         my $age = shift;
 657         my $age_str;
 658
 659         if ($age > 60*60*24*365*2) {
 660                 $age_str = (int $age/60/60/24/365);
 661                 $age_str .= " years ago";
 662         } elsif ($age > 60*60*24*(365/12)*2) {
 663                 $age_str = int $age/60/60/24/(365/12);
 664                 $age_str .= " months ago";
 665         } elsif ($age > 60*60*24*7*2) {
 666                 $age_str = int $age/60/60/24/7;
 667                 $age_str .= " weeks ago";
 668         } elsif ($age > 60*60*24*2) {
 669                 $age_str = int $age/60/60/24;
 670                 $age_str .= " days ago";
 671         } elsif ($age > 60*60*2) {
 672                 $age_str = int $age/60/60;
 673                 $age_str .= " hours ago";
 674         } elsif ($age > 60*2) {
 675                 $age_str = int $age/60;
 676                 $age_str .= " min ago";
 677         } elsif ($age > 2) {
 678                 $age_str = int $age;
 679                 $age_str .= " sec ago";
 680         } else {
 681                 $age_str .= " right now";
 682         }
 683         return $age_str;
 684 }
 685
 686 # convert file mode in octal to symbolic file mode string
 687 sub mode_str {
 688         my $mode = oct shift;
 689
 690         if (S_ISDIR($mode & S_IFMT)) {
 691                 return 'drwxr-xr-x';
 692         } elsif (S_ISLNK($mode)) {
 693                 return 'lrwxrwxrwx';
 694         } elsif (S_ISREG($mode)) {
 695                 # git cares only about the executable bit
 696                 if ($mode & S_IXUSR) {
 697                         return '-rwxr-xr-x';
 698                 } else {
 699                         return '-rw-r--r--';
 700                 };
 701         } else {
 702                 return '----------';
 703         }
 704 }
 705
 706 # convert file mode in octal to file type string
 707 sub file_type {
 708         my $mode = shift;
 709
 710         if ($mode !~ m/^[0-7]+$/) {
 711                 return $mode;
 712         } else {
 713                 $mode = oct $mode;
 714         }
 715
 716         if (S_ISDIR($mode & S_IFMT)) {
 717                 return "directory";
 718         } elsif (S_ISLNK($mode)) {
 719                 return "symlink";
 720         } elsif (S_ISREG($mode)) {
 721                 return "file";
 722         } else {
 723                 return "unknown";
 724         }
 725 }
 726
 727 ## ----------------------------------------------------------------------
 728 ## functions returning short HTML fragments, or transforming HTML fragments
 729 ## which don't beling to other sections
 730
 731 # format line of commit message or tag comment
 732 sub format_log_line_html {
 733         my $line = shift;
 734
 735         $line = esc_html($line);
 736         $line =~ s/ /&nbsp;/g;
 737         if ($line =~ m/([0-9a-fA-F]{40})/) {
 738                 my $hash_text = $1;
 739                 if (git_get_type($hash_text) eq "commit") {
 740                         my $link =
 741                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 742                                         -class => "text"}, $hash_text);
 743                         $line =~ s/$hash_text/$link/;
 744                 }
 745         }
 746         return $line;
 747 }
 748
 749 # format marker of refs pointing to given object
 750 sub format_ref_marker {
 751         my ($refs, $id) = @_;
 752         my $markers = '';
 753
 754         if (defined $refs->{$id}) {
 755                 foreach my $ref (@{$refs->{$id}}) {
 756                         my ($type, $name) = qw();
 757                         # e.g. tags/v2.6.11 or heads/next
 758                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 759                                 $type = $1;
 760                                 $name = $2;
 761                         } else {
 762                                 $type = "ref";
 763                                 $name = $ref;
 764                         }
 765
 766                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 767                 }
 768         }
 769
 770         if ($markers) {
 771                 return ' <span class="refs">'. $markers . '</span>';
 772         } else {
 773                 return "";
 774         }
 775 }
 776
 777 # format, perhaps shortened and with markers, title line
 778 sub format_subject_html {
 779         my ($long, $short, $href, $extra) = @_;
 780         $extra = '' unless defined($extra);
 781
 782         if (length($short) < length($long)) {
 783                 return $cgi->a({-href => $href, -class => "list subject",
 784                                 -title => to_utf8($long)},
 785                        esc_html($short) . $extra);
 786         } else {
 787                 return $cgi->a({-href => $href, -class => "list subject"},
 788                        esc_html($long)  . $extra);
 789         }
 790 }
 791
 792 sub format_diff_line {
 793         my $line = shift;
 794         my $char = substr($line, 0, 1);
 795         my $diff_class = "";
 796
 797         chomp $line;
 798
 799         if ($char eq '+') {
 800                 $diff_class = " add";
 801         } elsif ($char eq "-") {
 802                 $diff_class = " rem";
 803         } elsif ($char eq "@") {
 804                 $diff_class = " chunk_header";
 805         } elsif ($char eq "\\") {
 806                 $diff_class = " incomplete";
 807         }
 808         $line = untabify($line);
 809         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 810 }
 811
 812 ## ----------------------------------------------------------------------
 813 ## git utility subroutines, invoking git commands
 814
 815 # returns path to the core git executable and the --git-dir parameter as list
 816 sub git_cmd {
 817         return $GIT, '--git-dir='.$git_dir;
 818 }
 819
 820 # returns path to the core git executable and the --git-dir parameter as string
 821 sub git_cmd_str {
 822         return join(' ', git_cmd());
 823 }
 824
 825 # get HEAD ref of given project as hash
 826 sub git_get_head_hash {
 827         my $project = shift;
 828         my $o_git_dir = $git_dir;
 829         my $retval = undef;
 830         $git_dir = "$projectroot/$project";
 831         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 832                 my $head = <$fd>;
 833                 close $fd;
 834                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 835                         $retval = $1;
 836                 }
 837         }
 838         if (defined $o_git_dir) {
 839                 $git_dir = $o_git_dir;
 840         }
 841         return $retval;
 842 }
 843
 844 # get type of given object
 845 sub git_get_type {
 846         my $hash = shift;
 847
 848         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 849         my $type = <$fd>;
 850         close $fd or return;
 851         chomp $type;
 852         return $type;
 853 }
 854
 855 sub git_get_project_config {
 856         my ($key, $type) = @_;
 857
 858         return unless ($key);
 859         $key =~ s/^gitweb\.//;
 860         return if ($key =~ m/\W/);
 861
 862         my @x = (git_cmd(), 'repo-config');
 863         if (defined $type) { push @x, $type; }
 864         push @x, "--get";
 865         push @x, "gitweb.$key";
 866         my $val = qx(@x);
 867         chomp $val;
 868         return ($val);
 869 }
 870
 871 # get hash of given path at given ref
 872 sub git_get_hash_by_path {
 873         my $base = shift;
 874         my $path = shift || return undef;
 875         my $type = shift;
 876
 877         $path =~ s,/+$,,;
 878
 879         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 880                 or die_error(undef, "Open git-ls-tree failed");
 881         my $line = <$fd>;
 882         close $fd or return undef;
 883
 884         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 885         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 886         if (defined $type && $type ne $2) {
 887                 # type doesn't match
 888                 return undef;
 889         }
 890         return $3;
 891 }
 892
 893 ## ......................................................................
 894 ## git utility functions, directly accessing git repository
 895
 896 sub git_get_project_description {
 897         my $path = shift;
 898
 899         open my $fd, "$projectroot/$path/description" or return undef;
 900         my $descr = <$fd>;
 901         close $fd;
 902         chomp $descr;
 903         return $descr;
 904 }
 905
 906 sub git_get_project_url_list {
 907         my $path = shift;
 908
 909         open my $fd, "$projectroot/$path/cloneurl" or return;
 910         my @git_project_url_list = map { chomp; $_ } <$fd>;
 911         close $fd;
 912
 913         return wantarray ? @git_project_url_list : \@git_project_url_list;
 914 }
 915
 916 sub git_get_projects_list {
 917         my ($filter) = @_;
 918         my @list;
 919
 920         $filter ||= '';
 921         $filter =~ s/\.git$//;
 922
 923         if (-d $projects_list) {
 924                 # search in directory
 925                 my $dir = $projects_list . ($filter ? "/$filter" : '');
 926                 # remove the trailing "/"
 927                 $dir =~ s!/+$!!;
 928                 my $pfxlen = length("$dir");
 929
 930                 my ($check_forks) = gitweb_check_feature('forks');
 931
 932                 File::Find::find({
 933                         follow_fast => 1, # follow symbolic links
 934                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 935                         wanted => sub {
 936                                 # skip project-list toplevel, if we get it.
 937                                 return if (m!^[/.]$!);
 938                                 # only directories can be git repositories
 939                                 return unless (-d $_);
 940
 941                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 942                                 # we check related file in $projectroot
 943                                 if ($check_forks and $subdir =~ m#/.#) {
 944                                         $File::Find::prune = 1;
 945                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
 946                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
 947                                         $File::Find::prune = 1;
 948                                 }
 949                         },
 950                 }, "$dir");
 951
 952         } elsif (-f $projects_list) {
 953                 # read from file(url-encoded):
 954                 # 'git%2Fgit.git Linus+Torvalds'
 955                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 956                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 957                 open my ($fd), $projects_list or return;
 958                 while (my $line = <$fd>) {
 959                         chomp $line;
 960                         my ($path, $owner) = split ' ', $line;
 961                         $path = unescape($path);
 962                         $owner = unescape($owner);
 963                         if (!defined $path) {
 964                                 next;
 965                         }
 966                         if (check_export_ok("$projectroot/$path")) {
 967                                 my $pr = {
 968                                         path => $path,
 969                                         owner => to_utf8($owner),
 970                                 };
 971                                 push @list, $pr
 972                         }
 973                 }
 974                 close $fd;
 975         }
 976         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 977         return @list;
 978 }
 979
 980 sub git_get_project_owner {
 981         my $project = shift;
 982         my $owner;
 983
 984         return undef unless $project;
 985
 986         # read from file (url-encoded):
 987         # 'git%2Fgit.git Linus+Torvalds'
 988         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 989         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 990         if (-f $projects_list) {
 991                 open (my $fd , $projects_list);
 992                 while (my $line = <$fd>) {
 993                         chomp $line;
 994                         my ($pr, $ow) = split ' ', $line;
 995                         $pr = unescape($pr);
 996                         $ow = unescape($ow);
 997                         if ($pr eq $project) {
 998                                 $owner = to_utf8($ow);
 999                                 last;
1000                         }
1001                 }
1002                 close $fd;
1003         }
1004         if (!defined $owner) {
1005                 $owner = get_file_owner("$projectroot/$project");
1006         }
1007
1008         return $owner;
1009 }
1010
1011 sub git_get_last_activity {
1012         my ($path) = @_;
1013         my $fd;
1014
1015         $git_dir = "$projectroot/$path";
1016         open($fd, "-|", git_cmd(), 'for-each-ref',
1017              '--format=%(refname) %(committer)',
1018              '--sort=-committerdate',
1019              'refs/heads') or return;
1020         my $most_recent = <$fd>;
1021         close $fd or return;
1022         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1023                 my $timestamp = $1;
1024                 my $age = time - $timestamp;
1025                 return ($age, age_string($age));
1026         }
1027 }
1028
1029 sub git_get_references {
1030         my $type = shift || "";
1031         my %refs;
1032         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1033         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1034         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1035                 or return;
1036
1037         while (my $line = <$fd>) {
1038                 chomp $line;
1039                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1040                         if (defined $refs{$1}) {
1041                                 push @{$refs{$1}}, $2;
1042                         } else {
1043                                 $refs{$1} = [ $2 ];
1044                         }
1045                 }
1046         }
1047         close $fd or return;
1048         return \%refs;
1049 }
1050
1051 sub git_get_rev_name_tags {
1052         my $hash = shift || return undef;
1053
1054         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1055                 or return;
1056         my $name_rev = <$fd>;
1057         close $fd;
1058
1059         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1060                 return $1;
1061         } else {
1062                 # catches also '$hash undefined' output
1063                 return undef;
1064         }
1065 }
1066
1067 ## ----------------------------------------------------------------------
1068 ## parse to hash functions
1069
1070 sub parse_date {
1071         my $epoch = shift;
1072         my $tz = shift || "-0000";
1073
1074         my %date;
1075         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1076         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1077         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1078         $date{'hour'} = $hour;
1079         $date{'minute'} = $min;
1080         $date{'mday'} = $mday;
1081         $date{'day'} = $days[$wday];
1082         $date{'month'} = $months[$mon];
1083         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1084                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1085         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1086                              $mday, $months[$mon], $hour ,$min;
1087
1088         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1089         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1090         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1091         $date{'hour_local'} = $hour;
1092         $date{'minute_local'} = $min;
1093         $date{'tz_local'} = $tz;
1094         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1095                                    1900+$year, $mon+1, $mday,
1096                                    $hour, $min, $sec, $tz);
1097         return %date;
1098 }
1099
1100 sub parse_tag {
1101         my $tag_id = shift;
1102         my %tag;
1103         my @comment;
1104
1105         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1106         $tag{'id'} = $tag_id;
1107         while (my $line = <$fd>) {
1108                 chomp $line;
1109                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1110                         $tag{'object'} = $1;
1111                 } elsif ($line =~ m/^type (.+)$/) {
1112                         $tag{'type'} = $1;
1113                 } elsif ($line =~ m/^tag (.+)$/) {
1114                         $tag{'name'} = $1;
1115                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1116                         $tag{'author'} = $1;
1117                         $tag{'epoch'} = $2;
1118                         $tag{'tz'} = $3;
1119                 } elsif ($line =~ m/--BEGIN/) {
1120                         push @comment, $line;
1121                         last;
1122                 } elsif ($line eq "") {
1123                         last;
1124                 }
1125         }
1126         push @comment, <$fd>;
1127         $tag{'comment'} = \@comment;
1128         close $fd or return;
1129         if (!defined $tag{'name'}) {
1130                 return
1131         };
1132         return %tag
1133 }
1134
1135 sub parse_commit {
1136         my $commit_id = shift;
1137         my $commit_text = shift;
1138
1139         my @commit_lines;
1140         my %co;
1141
1142         if (defined $commit_text) {
1143                 @commit_lines = @$commit_text;
1144         } else {
1145                 local $/ = "\0";
1146                 open my $fd, "-|", git_cmd(), "rev-list",
1147                         "--header", "--parents", "--max-count=1",
1148                         $commit_id, "--"
1149                         or return;
1150                 @commit_lines = split '\n', <$fd>;
1151                 close $fd or return;
1152                 pop @commit_lines;
1153         }
1154         my $header = shift @commit_lines;
1155         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1156                 return;
1157         }
1158         ($co{'id'}, my @parents) = split ' ', $header;
1159         $co{'parents'} = \@parents;
1160         $co{'parent'} = $parents[0];
1161         while (my $line = shift @commit_lines) {
1162                 last if $line eq "\n";
1163                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1164                         $co{'tree'} = $1;
1165                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1166                         $co{'author'} = $1;
1167                         $co{'author_epoch'} = $2;
1168                         $co{'author_tz'} = $3;
1169                         if ($co{'author'} =~ m/^([^<]+) </) {
1170                                 $co{'author_name'} = $1;
1171                         } else {
1172                                 $co{'author_name'} = $co{'author'};
1173                         }
1174                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1175                         $co{'committer'} = $1;
1176                         $co{'committer_epoch'} = $2;
1177                         $co{'committer_tz'} = $3;
1178                         $co{'committer_name'} = $co{'committer'};
1179                         $co{'committer_name'} =~ s/ <.*//;
1180                 }
1181         }
1182         if (!defined $co{'tree'}) {
1183                 return;
1184         };
1185
1186         foreach my $title (@commit_lines) {
1187                 $title =~ s/^    //;
1188                 if ($title ne "") {
1189                         $co{'title'} = chop_str($title, 80, 5);
1190                         # remove leading stuff of merges to make the interesting part visible
1191                         if (length($title) > 50) {
1192                                 $title =~ s/^Automatic //;
1193                                 $title =~ s/^merge (of|with) /Merge ... /i;
1194                                 if (length($title) > 50) {
1195                                         $title =~ s/(http|rsync):\/\///;
1196                                 }
1197                                 if (length($title) > 50) {
1198                                         $title =~ s/(master|www|rsync)\.//;
1199                                 }
1200                                 if (length($title) > 50) {
1201                                         $title =~ s/kernel.org:?//;
1202                                 }
1203                                 if (length($title) > 50) {
1204                                         $title =~ s/\/pub\/scm//;
1205                                 }
1206                         }
1207                         $co{'title_short'} = chop_str($title, 50, 5);
1208                         last;
1209                 }
1210         }
1211         if ($co{'title'} eq "") {
1212                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1213         }
1214         # remove added spaces
1215         foreach my $line (@commit_lines) {
1216                 $line =~ s/^    //;
1217         }
1218         $co{'comment'} = \@commit_lines;
1219
1220         my $age = time - $co{'committer_epoch'};
1221         $co{'age'} = $age;
1222         $co{'age_string'} = age_string($age);
1223         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1224         if ($age > 60*60*24*7*2) {
1225                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1226                 $co{'age_string_age'} = $co{'age_string'};
1227         } else {
1228                 $co{'age_string_date'} = $co{'age_string'};
1229                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1230         }
1231         return %co;
1232 }
1233
1234 # parse ref from ref_file, given by ref_id, with given type
1235 sub parse_ref {
1236         my $ref_file = shift;
1237         my $ref_id = shift;
1238         my $type = shift || git_get_type($ref_id);
1239         my %ref_item;
1240
1241         $ref_item{'type'} = $type;
1242         $ref_item{'id'} = $ref_id;
1243         $ref_item{'epoch'} = 0;
1244         $ref_item{'age'} = "unknown";
1245         if ($type eq "tag") {
1246                 my %tag = parse_tag($ref_id);
1247                 $ref_item{'comment'} = $tag{'comment'};
1248                 if ($tag{'type'} eq "commit") {
1249                         my %co = parse_commit($tag{'object'});
1250                         $ref_item{'epoch'} = $co{'committer_epoch'};
1251                         $ref_item{'age'} = $co{'age_string'};
1252                 } elsif (defined($tag{'epoch'})) {
1253                         my $age = time - $tag{'epoch'};
1254                         $ref_item{'epoch'} = $tag{'epoch'};
1255                         $ref_item{'age'} = age_string($age);
1256                 }
1257                 $ref_item{'reftype'} = $tag{'type'};
1258                 $ref_item{'name'} = $tag{'name'};
1259                 $ref_item{'refid'} = $tag{'object'};
1260         } elsif ($type eq "commit"){
1261                 my %co = parse_commit($ref_id);
1262                 $ref_item{'reftype'} = "commit";
1263                 $ref_item{'name'} = $ref_file;
1264                 $ref_item{'title'} = $co{'title'};
1265                 $ref_item{'refid'} = $ref_id;
1266                 $ref_item{'epoch'} = $co{'committer_epoch'};
1267                 $ref_item{'age'} = $co{'age_string'};
1268         } else {
1269                 $ref_item{'reftype'} = $type;
1270                 $ref_item{'name'} = $ref_file;
1271                 $ref_item{'refid'} = $ref_id;
1272         }
1273
1274         return %ref_item;
1275 }
1276
1277 # parse line of git-diff-tree "raw" output
1278 sub parse_difftree_raw_line {
1279         my $line = shift;
1280         my %res;
1281
1282         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1283         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1284         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1285                 $res{'from_mode'} = $1;
1286                 $res{'to_mode'} = $2;
1287                 $res{'from_id'} = $3;
1288                 $res{'to_id'} = $4;
1289                 $res{'status'} = $5;
1290                 $res{'similarity'} = $6;
1291                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1292                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1293                 } else {
1294                         $res{'file'} = unquote($7);
1295                 }
1296         }
1297         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1298         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1299                 $res{'commit'} = $1;
1300         }
1301
1302         return wantarray ? %res : \%res;
1303 }
1304
1305 # parse line of git-ls-tree output
1306 sub parse_ls_tree_line ($;%) {
1307         my $line = shift;
1308         my %opts = @_;
1309         my %res;
1310
1311         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1312         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1313
1314         $res{'mode'} = $1;
1315         $res{'type'} = $2;
1316         $res{'hash'} = $3;
1317         if ($opts{'-z'}) {
1318                 $res{'name'} = $4;
1319         } else {
1320                 $res{'name'} = unquote($4);
1321         }
1322
1323         return wantarray ? %res : \%res;
1324 }
1325
1326 ## ......................................................................
1327 ## parse to array of hashes functions
1328
1329 sub git_get_heads_list {
1330         my $limit = shift;
1331         my @headslist;
1332
1333         open my $fd, '-|', git_cmd(), 'for-each-ref',
1334                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1335                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1336                 'refs/heads'
1337                 or return;
1338         while (my $line = <$fd>) {
1339                 my %ref_item;
1340
1341                 chomp $line;
1342                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1343                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1344                 my ($committer, $epoch, $tz) =
1345                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1346                 $name =~ s!^refs/heads/!!;
1347
1348                 $ref_item{'name'}  = $name;
1349                 $ref_item{'id'}    = $hash;
1350                 $ref_item{'title'} = $title || '(no commit message)';
1351                 $ref_item{'epoch'} = $epoch;
1352                 if ($epoch) {
1353                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1354                 } else {
1355                         $ref_item{'age'} = "unknown";
1356                 }
1357
1358                 push @headslist, \%ref_item;
1359         }
1360         close $fd;
1361
1362         return wantarray ? @headslist : \@headslist;
1363 }
1364
1365 sub git_get_tags_list {
1366         my $limit = shift;
1367         my @tagslist;
1368
1369         open my $fd, '-|', git_cmd(), 'for-each-ref',
1370                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1371                 '--format=%(objectname) %(objecttype) %(refname) '.
1372                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1373                 'refs/tags'
1374                 or return;
1375         while (my $line = <$fd>) {
1376                 my %ref_item;
1377
1378                 chomp $line;
1379                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1380                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1381                 my ($creator, $epoch, $tz) =
1382                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1383                 $name =~ s!^refs/tags/!!;
1384
1385                 $ref_item{'type'} = $type;
1386                 $ref_item{'id'} = $id;
1387                 $ref_item{'name'} = $name;
1388                 if ($type eq "tag") {
1389                         $ref_item{'subject'} = $title;
1390                         $ref_item{'reftype'} = $reftype;
1391                         $ref_item{'refid'}   = $refid;
1392                 } else {
1393                         $ref_item{'reftype'} = $type;
1394                         $ref_item{'refid'}   = $id;
1395                 }
1396
1397                 if ($type eq "tag" || $type eq "commit") {
1398                         $ref_item{'epoch'} = $epoch;
1399                         if ($epoch) {
1400                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1401                         } else {
1402                                 $ref_item{'age'} = "unknown";
1403                         }
1404                 }
1405
1406                 push @tagslist, \%ref_item;
1407         }
1408         close $fd;
1409
1410         return wantarray ? @tagslist : \@tagslist;
1411 }
1412
1413 ## ----------------------------------------------------------------------
1414 ## filesystem-related functions
1415
1416 sub get_file_owner {
1417         my $path = shift;
1418
1419         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1420         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1421         if (!defined $gcos) {
1422                 return undef;
1423         }
1424         my $owner = $gcos;
1425         $owner =~ s/[,;].*$//;
1426         return to_utf8($owner);
1427 }
1428
1429 ## ......................................................................
1430 ## mimetype related functions
1431
1432 sub mimetype_guess_file {
1433         my $filename = shift;
1434         my $mimemap = shift;
1435         -r $mimemap or return undef;
1436
1437         my %mimemap;
1438         open(MIME, $mimemap) or return undef;
1439         while (<MIME>) {
1440                 next if m/^#/; # skip comments
1441                 my ($mime, $exts) = split(/\t+/);
1442                 if (defined $exts) {
1443                         my @exts = split(/\s+/, $exts);
1444                         foreach my $ext (@exts) {
1445                                 $mimemap{$ext} = $mime;
1446                         }
1447                 }
1448         }
1449         close(MIME);
1450
1451         $filename =~ /\.([^.]*)$/;
1452         return $mimemap{$1};
1453 }
1454
1455 sub mimetype_guess {
1456         my $filename = shift;
1457         my $mime;
1458         $filename =~ /\./ or return undef;
1459
1460         if ($mimetypes_file) {
1461                 my $file = $mimetypes_file;
1462                 if ($file !~ m!^/!) { # if it is relative path
1463                         # it is relative to project
1464                         $file = "$projectroot/$project/$file";
1465                 }
1466                 $mime = mimetype_guess_file($filename, $file);
1467         }
1468         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1469         return $mime;
1470 }
1471
1472 sub blob_mimetype {
1473         my $fd = shift;
1474         my $filename = shift;
1475
1476         if ($filename) {
1477                 my $mime = mimetype_guess($filename);
1478                 $mime and return $mime;
1479         }
1480
1481         # just in case
1482         return $default_blob_plain_mimetype unless $fd;
1483
1484         if (-T $fd) {
1485                 return 'text/plain' .
1486                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1487         } elsif (! $filename) {
1488                 return 'application/octet-stream';
1489         } elsif ($filename =~ m/\.png$/i) {
1490                 return 'image/png';
1491         } elsif ($filename =~ m/\.gif$/i) {
1492                 return 'image/gif';
1493         } elsif ($filename =~ m/\.jpe?g$/i) {
1494                 return 'image/jpeg';
1495         } else {
1496                 return 'application/octet-stream';
1497         }
1498 }
1499
1500 ## ======================================================================
1501 ## functions printing HTML: header, footer, error page
1502
1503 sub git_header_html {
1504         my $status = shift || "200 OK";
1505         my $expires = shift;
1506
1507         my $title = "$site_name";
1508         if (defined $project) {
1509                 $title .= " - $project";
1510                 if (defined $action) {
1511                         $title .= "/$action";
1512                         if (defined $file_name) {
1513                                 $title .= " - " . esc_html($file_name);
1514                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1515                                         $title .= "/";
1516                                 }
1517                         }
1518                 }
1519         }
1520         my $content_type;
1521         # require explicit support from the UA if we are to send the page as
1522         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1523         # we have to do this because MSIE sometimes globs '*/*', pretending to
1524         # support xhtml+xml but choking when it gets what it asked for.
1525         if (defined $cgi->http('HTTP_ACCEPT') &&
1526             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1527             $cgi->Accept('application/xhtml+xml') != 0) {
1528                 $content_type = 'application/xhtml+xml';
1529         } else {
1530                 $content_type = 'text/html';
1531         }
1532         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1533                            -status=> $status, -expires => $expires);
1534         print <<EOF;
1535 <?xml version="1.0" encoding="utf-8"?>
1536 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1537 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1538 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1539 <!-- git core binaries version $git_version -->
1540 <head>
1541 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1542 <meta name="generator" content="gitweb/$version git/$git_version"/>
1543 <meta name="robots" content="index, nofollow"/>
1544 <title>$title</title>
1545 EOF
1546 # print out each stylesheet that exist
1547         if (defined $stylesheet) {
1548 #provides backwards capability for those people who define style sheet in a config file
1549                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1550         } else {
1551                 foreach my $stylesheet (@stylesheets) {
1552                         next unless $stylesheet;
1553                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1554                 }
1555         }
1556         if (defined $project) {
1557                 printf('<link rel="alternate" title="%s log" '.
1558                        'href="%s" type="application/rss+xml"/>'."\n",
1559                        esc_param($project), href(action=>"rss"));
1560         } else {
1561                 printf('<link rel="alternate" title="%s projects list" '.
1562                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1563                        $site_name, href(project=>undef, action=>"project_index"));
1564                 printf('<link rel="alternate" title="%s projects logs" '.
1565                        'href="%s" type="text/x-opml"/>'."\n",
1566                        $site_name, href(project=>undef, action=>"opml"));
1567         }
1568         if (defined $favicon) {
1569                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1570         }
1571
1572         print "</head>\n" .
1573               "<body>\n";
1574
1575         if (-f $site_header) {
1576                 open (my $fd, $site_header);
1577                 print <$fd>;
1578                 close $fd;
1579         }
1580
1581         print "<div class=\"page_header\">\n" .
1582               $cgi->a({-href => esc_url($logo_url),
1583                        -title => $logo_label},
1584                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1585         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1586         if (defined $project) {
1587                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1588                 if (defined $action) {
1589                         print " / $action";
1590                 }
1591                 print "\n";
1592                 if (!defined $searchtext) {
1593                         $searchtext = "";
1594                 }
1595                 my $search_hash;
1596                 if (defined $hash_base) {
1597                         $search_hash = $hash_base;
1598                 } elsif (defined $hash) {
1599                         $search_hash = $hash;
1600                 } else {
1601                         $search_hash = "HEAD";
1602                 }
1603                 $cgi->param("a", "search");
1604                 $cgi->param("h", $search_hash);
1605                 $cgi->param("p", $project);
1606                 print $cgi->startform(-method => "get", -action => $my_uri) .
1607                       "<div class=\"search\">\n" .
1608                       $cgi->hidden(-name => "p") . "\n" .
1609                       $cgi->hidden(-name => "a") . "\n" .
1610                       $cgi->hidden(-name => "h") . "\n" .
1611                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1612                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1613                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1614                       " search:\n",
1615                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1616                       "</div>" .
1617                       $cgi->end_form() . "\n";
1618         }
1619         print "</div>\n";
1620 }
1621
1622 sub git_footer_html {
1623         print "<div class=\"page_footer\">\n";
1624         if (defined $project) {
1625                 my $descr = git_get_project_description($project);
1626                 if (defined $descr) {
1627                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1628                 }
1629                 print $cgi->a({-href => href(action=>"rss"),
1630                               -class => "rss_logo"}, "RSS") . "\n";
1631         } else {
1632                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1633                               -class => "rss_logo"}, "OPML") . " ";
1634                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1635                               -class => "rss_logo"}, "TXT") . "\n";
1636         }
1637         print "</div>\n" ;
1638
1639         if (-f $site_footer) {
1640                 open (my $fd, $site_footer);
1641                 print <$fd>;
1642                 close $fd;
1643         }
1644
1645         print "</body>\n" .
1646               "</html>";
1647 }
1648
1649 sub die_error {
1650         my $status = shift || "403 Forbidden";
1651         my $error = shift || "Malformed query, file missing or permission denied";
1652
1653         git_header_html($status);
1654         print <<EOF;
1655 <div class="page_body">
1656 <br /><br />
1657 $status - $error
1658 <br />
1659 </div>
1660 EOF
1661         git_footer_html();
1662         exit;
1663 }
1664
1665 ## ----------------------------------------------------------------------
1666 ## functions printing or outputting HTML: navigation
1667
1668 sub git_print_page_nav {
1669         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1670         $extra = '' if !defined $extra; # pager or formats
1671
1672         my @navs = qw(summary shortlog log commit commitdiff tree);
1673         if ($suppress) {
1674                 @navs = grep { $_ ne $suppress } @navs;
1675         }
1676
1677         my %arg = map { $_ => {action=>$_} } @navs;
1678         if (defined $head) {
1679                 for (qw(commit commitdiff)) {
1680                         $arg{$_}{hash} = $head;
1681                 }
1682                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1683                         for (qw(shortlog log)) {
1684                                 $arg{$_}{hash} = $head;
1685                         }
1686                 }
1687         }
1688         $arg{tree}{hash} = $treehead if defined $treehead;
1689         $arg{tree}{hash_base} = $treebase if defined $treebase;
1690
1691         print "<div class=\"page_nav\">\n" .
1692                 (join " | ",
1693                  map { $_ eq $current ?
1694                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1695                  } @navs);
1696         print "<br/>\n$extra<br/>\n" .
1697               "</div>\n";
1698 }
1699
1700 sub format_paging_nav {
1701         my ($action, $hash, $head, $page, $nrevs) = @_;
1702         my $paging_nav;
1703
1704
1705         if ($hash ne $head || $page) {
1706                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1707         } else {
1708                 $paging_nav .= "HEAD";
1709         }
1710
1711         if ($page > 0) {
1712                 $paging_nav .= " &sdot; " .
1713                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1714                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1715         } else {
1716                 $paging_nav .= " &sdot; prev";
1717         }
1718
1719         if ($nrevs >= (100 * ($page+1)-1)) {
1720                 $paging_nav .= " &sdot; " .
1721                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1722                                  -accesskey => "n", -title => "Alt-n"}, "next");
1723         } else {
1724                 $paging_nav .= " &sdot; next";
1725         }
1726
1727         return $paging_nav;
1728 }
1729
1730 ## ......................................................................
1731 ## functions printing or outputting HTML: div
1732
1733 sub git_print_header_div {
1734         my ($action, $title, $hash, $hash_base) = @_;
1735         my %args = ();
1736
1737         $args{action} = $action;
1738         $args{hash} = $hash if $hash;
1739         $args{hash_base} = $hash_base if $hash_base;
1740
1741         print "<div class=\"header\">\n" .
1742               $cgi->a({-href => href(%args), -class => "title"},
1743               $title ? $title : $action) .
1744               "\n</div>\n";
1745 }
1746
1747 #sub git_print_authorship (\%) {
1748 sub git_print_authorship {
1749         my $co = shift;
1750
1751         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1752         print "<div class=\"author_date\">" .
1753               esc_html($co->{'author_name'}) .
1754               " [$ad{'rfc2822'}";
1755         if ($ad{'hour_local'} < 6) {
1756                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1757                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1758         } else {
1759                 printf(" (%02d:%02d %s)",
1760                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1761         }
1762         print "]</div>\n";
1763 }
1764
1765 sub git_print_page_path {
1766         my $name = shift;
1767         my $type = shift;
1768         my $hb = shift;
1769
1770
1771         print "<div class=\"page_path\">";
1772         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1773                       -title => 'tree root'}, "[$project]");
1774         print " / ";
1775         if (defined $name) {
1776                 my @dirname = split '/', $name;
1777                 my $basename = pop @dirname;
1778                 my $fullname = '';
1779
1780                 foreach my $dir (@dirname) {
1781                         $fullname .= ($fullname ? '/' : '') . $dir;
1782                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1783                                                      hash_base=>$hb),
1784                                       -title => $fullname}, esc_html($dir));
1785                         print " / ";
1786                 }
1787                 if (defined $type && $type eq 'blob') {
1788                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1789                                                      hash_base=>$hb),
1790                                       -title => $name}, esc_html($basename));
1791                 } elsif (defined $type && $type eq 'tree') {
1792                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1793                                                      hash_base=>$hb),
1794                                       -title => $name}, esc_html($basename));
1795                         print " / ";
1796                 } else {
1797                         print esc_html($basename);
1798                 }
1799         }
1800         print "<br/></div>\n";
1801 }
1802
1803 # sub git_print_log (\@;%) {
1804 sub git_print_log ($;%) {
1805         my $log = shift;
1806         my %opts = @_;
1807
1808         if ($opts{'-remove_title'}) {
1809                 # remove title, i.e. first line of log
1810                 shift @$log;
1811         }
1812         # remove leading empty lines
1813         while (defined $log->[0] && $log->[0] eq "") {
1814                 shift @$log;
1815         }
1816
1817         # print log
1818         my $signoff = 0;
1819         my $empty = 0;
1820         foreach my $line (@$log) {
1821                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1822                         $signoff = 1;
1823                         $empty = 0;
1824                         if (! $opts{'-remove_signoff'}) {
1825                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1826                                 next;
1827                         } else {
1828                                 # remove signoff lines
1829                                 next;
1830                         }
1831                 } else {
1832                         $signoff = 0;
1833                 }
1834
1835                 # print only one empty line
1836                 # do not print empty line after signoff
1837                 if ($line eq "") {
1838                         next if ($empty || $signoff);
1839                         $empty = 1;
1840                 } else {
1841                         $empty = 0;
1842                 }
1843
1844                 print format_log_line_html($line) . "<br/>\n";
1845         }
1846
1847         if ($opts{'-final_empty_line'}) {
1848                 # end with single empty line
1849                 print "<br/>\n" unless $empty;
1850         }
1851 }
1852
1853 # print tree entry (row of git_tree), but without encompassing <tr> element
1854 sub git_print_tree_entry {
1855         my ($t, $basedir, $hash_base, $have_blame) = @_;
1856
1857         my %base_key = ();
1858         $base_key{hash_base} = $hash_base if defined $hash_base;
1859
1860         # The format of a table row is: mode list link.  Where mode is
1861         # the mode of the entry, list is the name of the entry, an href,
1862         # and link is the action links of the entry.
1863
1864         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1865         if ($t->{'type'} eq "blob") {
1866                 print "<td class=\"list\">" .
1867                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1868                                                file_name=>"$basedir$t->{'name'}", %base_key),
1869                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1870                 print "<td class=\"link\">";
1871                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1872                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1873                               "blob");
1874                 if ($have_blame) {
1875                         print " | " .
1876                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1877                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1878                                             "blame");
1879                 }
1880                 if (defined $hash_base) {
1881                         print " | " .
1882                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1883                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1884                                       "history");
1885                 }
1886                 print " | " .
1887                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1888                                                file_name=>"$basedir$t->{'name'}")},
1889                                 "raw");
1890                 print "</td>\n";
1891
1892         } elsif ($t->{'type'} eq "tree") {
1893                 print "<td class=\"list\">";
1894                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1895                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1896                               esc_html($t->{'name'}));
1897                 print "</td>\n";
1898                 print "<td class=\"link\">";
1899                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1900                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1901                               "tree");
1902                 if (defined $hash_base) {
1903                         print " | " .
1904                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1905                                                      file_name=>"$basedir$t->{'name'}")},
1906                                       "history");
1907                 }
1908                 print "</td>\n";
1909         }
1910 }
1911
1912 ## ......................................................................
1913 ## functions printing large fragments of HTML
1914
1915 sub git_difftree_body {
1916         my ($difftree, $hash, $parent) = @_;
1917
1918         print "<div class=\"list_head\">\n";
1919         if ($#{$difftree} > 10) {
1920                 print(($#{$difftree} + 1) . " files changed:\n");
1921         }
1922         print "</div>\n";
1923
1924         print "<table class=\"diff_tree\">\n";
1925         my $alternate = 1;
1926         my $patchno = 0;
1927         foreach my $line (@{$difftree}) {
1928                 my %diff = parse_difftree_raw_line($line);
1929
1930                 if ($alternate) {
1931                         print "<tr class=\"dark\">\n";
1932                 } else {
1933                         print "<tr class=\"light\">\n";
1934                 }
1935                 $alternate ^= 1;
1936
1937                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1938                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1939                 if ($diff{'to_mode'} ne ('0' x 6)) {
1940                         $to_mode_oct = oct $diff{'to_mode'};
1941                         if (S_ISREG($to_mode_oct)) { # only for regular file
1942                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1943                         }
1944                         $to_file_type = file_type($diff{'to_mode'});
1945                 }
1946                 if ($diff{'from_mode'} ne ('0' x 6)) {
1947                         $from_mode_oct = oct $diff{'from_mode'};
1948                         if (S_ISREG($to_mode_oct)) { # only for regular file
1949                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1950                         }
1951                         $from_file_type = file_type($diff{'from_mode'});
1952                 }
1953
1954                 if ($diff{'status'} eq "A") { # created
1955                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1956                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1957                         $mode_chng   .= "]</span>";
1958                         print "<td>";
1959                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1960                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1961                                       -class => "list"}, esc_html($diff{'file'}));
1962                         print "</td>\n";
1963                         print "<td>$mode_chng</td>\n";
1964                         print "<td class=\"link\">";
1965                         if ($action eq 'commitdiff') {
1966                                 # link to patch
1967                                 $patchno++;
1968                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1969                         }
1970                         print "</td>\n";
1971
1972                 } elsif ($diff{'status'} eq "D") { # deleted
1973                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1974                         print "<td>";
1975                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1976                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1977                                        -class => "list"}, esc_html($diff{'file'}));
1978                         print "</td>\n";
1979                         print "<td>$mode_chng</td>\n";
1980                         print "<td class=\"link\">";
1981                         if ($action eq 'commitdiff') {
1982                                 # link to patch
1983                                 $patchno++;
1984                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1985                                 print " | ";
1986                         }
1987                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1988                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1989                                       "blob") . " | ";
1990                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1991                                                      file_name=>$diff{'file'})},
1992                                       "blame") . " | ";
1993                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1994                                                      file_name=>$diff{'file'})},
1995                                       "history");
1996                         print "</td>\n";
1997
1998                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1999                         my $mode_chnge = "";
2000                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2001                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2002                                 if ($from_file_type != $to_file_type) {
2003                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2004                                 }
2005                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2006                                         if ($from_mode_str && $to_mode_str) {
2007                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2008                                         } elsif ($to_mode_str) {
2009                                                 $mode_chnge .= " mode: $to_mode_str";
2010                                         }
2011                                 }
2012                                 $mode_chnge .= "]</span>\n";
2013                         }
2014                         print "<td>";
2015                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2016                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2017                                       -class => "list"}, esc_html($diff{'file'}));
2018                         print "</td>\n";
2019                         print "<td>$mode_chnge</td>\n";
2020                         print "<td class=\"link\">";
2021                         if ($action eq 'commitdiff') {
2022                                 # link to patch
2023                                 $patchno++;
2024                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2025                                       " | ";
2026                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2027                                 # "commit" view and modified file (not onlu mode changed)
2028                                 print $cgi->a({-href => href(action=>"blobdiff",
2029                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2030                                                              hash_base=>$hash, hash_parent_base=>$parent,
2031                                                              file_name=>$diff{'file'})},
2032                                               "diff") .
2033                                       " | ";
2034                         }
2035                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2036                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2037                                       "blob") . " | ";
2038                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2039                                                      file_name=>$diff{'file'})},
2040                                       "blame") . " | ";
2041                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2042                                                      file_name=>$diff{'file'})},
2043                                       "history");
2044                         print "</td>\n";
2045
2046                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2047                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2048                         my $nstatus = $status_name{$diff{'status'}};
2049                         my $mode_chng = "";
2050                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2051                                 # mode also for directories, so we cannot use $to_mode_str
2052                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2053                         }
2054                         print "<td>" .
2055                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2056                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2057                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
2058                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2059                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2060                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2061                                       -class => "list"}, esc_html($diff{'from_file'})) .
2062                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2063                               "<td class=\"link\">";
2064                         if ($action eq 'commitdiff') {
2065                                 # link to patch
2066                                 $patchno++;
2067                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2068                                       " | ";
2069                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2070                                 # "commit" view and modified file (not only pure rename or copy)
2071                                 print $cgi->a({-href => href(action=>"blobdiff",
2072                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2073                                                              hash_base=>$hash, hash_parent_base=>$parent,
2074                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2075                                               "diff") .
2076                                       " | ";
2077                         }
2078                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2079                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2080                                       "blob") . " | ";
2081                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2082                                                      file_name=>$diff{'from_file'})},
2083                                       "blame") . " | ";
2084                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2085                                                     file_name=>$diff{'from_file'})},
2086                                       "history");
2087                         print "</td>\n";
2088
2089                 } # we should not encounter Unmerged (U) or Unknown (X) status
2090                 print "</tr>\n";
2091         }
2092         print "</table>\n";
2093 }
2094
2095 sub git_patchset_body {
2096         my ($fd, $difftree, $hash, $hash_parent) = @_;
2097
2098         my $patch_idx = 0;
2099         my $in_header = 0;
2100         my $patch_found = 0;
2101         my $diffinfo;
2102
2103         print "<div class=\"patchset\">\n";
2104
2105         LINE:
2106         while (my $patch_line = <$fd>) {
2107                 chomp $patch_line;
2108
2109                 if ($patch_line =~ m/^diff /) { # "git diff" header
2110                         # beginning of patch (in patchset)
2111                         if ($patch_found) {
2112                                 # close previous patch
2113                                 print "</div>\n"; # class="patch"
2114                         } else {
2115                                 # first patch in patchset
2116                                 $patch_found = 1;
2117                         }
2118                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2119
2120                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2121                                 $diffinfo = $difftree->[$patch_idx];
2122                         } else {
2123                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2124                         }
2125                         $patch_idx++;
2126
2127                         if ($diffinfo->{'status'} eq "A") { # added
2128                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2129                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2130                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2131                                               $diffinfo->{'to_id'}) . " (new)" .
2132                                       "</div>\n"; # class="diff_info"
2133
2134                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2135                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2136                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2137                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2138                                               $diffinfo->{'from_id'}) . " (deleted)" .
2139                                       "</div>\n"; # class="diff_info"
2140
2141                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2142                                  $diffinfo->{'status'} eq "C" || # copied
2143                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2144                                 print "<div class=\"diff_info\">" .
2145                                       file_type($diffinfo->{'from_mode'}) . ":" .
2146                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2147                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2148                                               $diffinfo->{'from_id'}) .
2149                                       " -> " .
2150                                       file_type($diffinfo->{'to_mode'}) . ":" .
2151                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2152                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2153                                               $diffinfo->{'to_id'});
2154                                 print "</div>\n"; # class="diff_info"
2155
2156                         } else { # modified, mode changed, ...
2157                                 print "<div class=\"diff_info\">" .
2158                                       file_type($diffinfo->{'from_mode'}) . ":" .
2159                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2160                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2161                                               $diffinfo->{'from_id'}) .
2162                                       " -> " .
2163                                       file_type($diffinfo->{'to_mode'}) . ":" .
2164                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2165                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2166                                               $diffinfo->{'to_id'});
2167                                 print "</div>\n"; # class="diff_info"
2168                         }
2169
2170                         #print "<div class=\"diff extended_header\">\n";
2171                         $in_header = 1;
2172                         next LINE;
2173                 } # start of patch in patchset
2174
2175
2176                 if ($in_header && $patch_line =~ m/^---/) {
2177                         #print "</div>\n"; # class="diff extended_header"
2178                         $in_header = 0;
2179
2180                         my $file = $diffinfo->{'from_file'};
2181                         $file  ||= $diffinfo->{'file'};
2182                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2183                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2184                                         -class => "list"}, esc_html($file));
2185                         $patch_line =~ s|a/.*$|a/$file|g;
2186                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2187
2188                         $patch_line = <$fd>;
2189                         chomp $patch_line;
2190
2191                         #$patch_line =~ m/^+++/;
2192                         $file    = $diffinfo->{'to_file'};
2193                         $file  ||= $diffinfo->{'file'};
2194                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2195                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2196                                         -class => "list"}, esc_html($file));
2197                         $patch_line =~ s|b/.*|b/$file|g;
2198                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2199
2200                         next LINE;
2201                 }
2202                 next LINE if $in_header;
2203
2204                 print format_diff_line($patch_line);
2205         }
2206         print "</div>\n" if $patch_found; # class="patch"
2207
2208         print "</div>\n"; # class="patchset"
2209 }
2210
2211 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2212
2213 sub git_project_list_body {
2214         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2215
2216         my ($check_forks) = gitweb_check_feature('forks');
2217
2218         my @projects;
2219         foreach my $pr (@$projlist) {
2220                 my (@aa) = git_get_last_activity($pr->{'path'});
2221                 unless (@aa) {
2222                         next;
2223                 }
2224                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2225                 if (!defined $pr->{'descr'}) {
2226                         my $descr = git_get_project_description($pr->{'path'}) || "";
2227                         $pr->{'descr'} = chop_str($descr, 25, 5);
2228                 }
2229                 if (!defined $pr->{'owner'}) {
2230                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2231                 }
2232                 if ($check_forks) {
2233                         my $pname = $pr->{'path'};
2234                         $pname =~ s/\.git$//;
2235                         $pr->{'forks'} = -d "$projectroot/$pname";
2236                 }
2237                 push @projects, $pr;
2238         }
2239
2240         $order ||= "project";
2241         $from = 0 unless defined $from;
2242         $to = $#projects if (!defined $to || $#projects < $to);
2243
2244         print "<table class=\"project_list\">\n";
2245         unless ($no_header) {
2246                 print "<tr>\n";
2247                 if ($check_forks) {
2248                         print "<th></th>\n";
2249                 }
2250                 if ($order eq "project") {
2251                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2252                         print "<th>Project</th>\n";
2253                 } else {
2254                         print "<th>" .
2255                               $cgi->a({-href => href(project=>undef, order=>'project'),
2256                                        -class => "header"}, "Project") .
2257                               "</th>\n";
2258                 }
2259                 if ($order eq "descr") {
2260                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2261                         print "<th>Description</th>\n";
2262                 } else {
2263                         print "<th>" .
2264                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2265                                        -class => "header"}, "Description") .
2266                               "</th>\n";
2267                 }
2268                 if ($order eq "owner") {
2269                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2270                         print "<th>Owner</th>\n";
2271                 } else {
2272                         print "<th>" .
2273                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2274                                        -class => "header"}, "Owner") .
2275                               "</th>\n";
2276                 }
2277                 if ($order eq "age") {
2278                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2279                         print "<th>Last Change</th>\n";
2280                 } else {
2281                         print "<th>" .
2282                               $cgi->a({-href => href(project=>undef, order=>'age'),
2283                                        -class => "header"}, "Last Change") .
2284                               "</th>\n";
2285                 }
2286                 print "<th></th>\n" .
2287                       "</tr>\n";
2288         }
2289         my $alternate = 1;
2290         for (my $i = $from; $i <= $to; $i++) {
2291                 my $pr = $projects[$i];
2292                 if ($alternate) {
2293                         print "<tr class=\"dark\">\n";
2294                 } else {
2295                         print "<tr class=\"light\">\n";
2296                 }
2297                 $alternate ^= 1;
2298                 if ($check_forks) {
2299                         print "<td>";
2300                         if ($pr->{'forks'}) {
2301                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2302                         }
2303                         print "</td>\n";
2304                 }
2305                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2306                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2307                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2308                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2309                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2310                       $pr->{'age_string'} . "</td>\n" .
2311                       "<td class=\"link\">" .
2312                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2313                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2314                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2315                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2316                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2317                       "</td>\n" .
2318                       "</tr>\n";
2319         }
2320         if (defined $extra) {
2321                 print "<tr>\n";
2322                 if ($check_forks) {
2323                         print "<td></td>\n";
2324                 }
2325                 print "<td colspan=\"5\">$extra</td>\n" .
2326                       "</tr>\n";
2327         }
2328         print "</table>\n";
2329 }
2330
2331 sub git_shortlog_body {
2332         # uses global variable $project
2333         my ($revlist, $from, $to, $refs, $extra) = @_;
2334
2335         $from = 0 unless defined $from;
2336         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2337
2338         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2339         my $alternate = 1;
2340         for (my $i = $from; $i <= $to; $i++) {
2341                 my $commit = $revlist->[$i];
2342                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2343                 my $ref = format_ref_marker($refs, $commit);
2344                 my %co = parse_commit($commit);
2345                 if ($alternate) {
2346                         print "<tr class=\"dark\">\n";
2347                 } else {
2348                         print "<tr class=\"light\">\n";
2349                 }
2350                 $alternate ^= 1;
2351                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2352                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2353                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2354                       "<td>";
2355                 print format_subject_html($co{'title'}, $co{'title_short'},
2356                                           href(action=>"commit", hash=>$commit), $ref);
2357                 print "</td>\n" .
2358                       "<td class=\"link\">" .
2359                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2360                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2361                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2362                 if (gitweb_have_snapshot()) {
2363                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2364                 }
2365                 print "</td>\n" .
2366                       "</tr>\n";
2367         }
2368         if (defined $extra) {
2369                 print "<tr>\n" .
2370                       "<td colspan=\"4\">$extra</td>\n" .
2371                       "</tr>\n";
2372         }
2373         print "</table>\n";
2374 }
2375
2376 sub git_history_body {
2377         # Warning: assumes constant type (blob or tree) during history
2378         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2379
2380         $from = 0 unless defined $from;
2381         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2382
2383         print "<table class=\"history\" cellspacing=\"0\">\n";
2384         my $alternate = 1;
2385         for (my $i = $from; $i <= $to; $i++) {
2386                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2387                         next;
2388                 }
2389
2390                 my $commit = $1;
2391                 my %co = parse_commit($commit);
2392                 if (!%co) {
2393                         next;
2394                 }
2395
2396                 my $ref = format_ref_marker($refs, $commit);
2397
2398                 if ($alternate) {
2399                         print "<tr class=\"dark\">\n";
2400                 } else {
2401                         print "<tr class=\"light\">\n";
2402                 }
2403                 $alternate ^= 1;
2404                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2405                       # shortlog uses      chop_str($co{'author_name'}, 10)
2406                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2407                       "<td>";
2408                 # originally git_history used chop_str($co{'title'}, 50)
2409                 print format_subject_html($co{'title'}, $co{'title_short'},
2410                                           href(action=>"commit", hash=>$commit), $ref);
2411                 print "</td>\n" .
2412                       "<td class=\"link\">" .
2413                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2414                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2415
2416                 if ($ftype eq 'blob') {
2417                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2418                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2419                         if (defined $blob_current && defined $blob_parent &&
2420                                         $blob_current ne $blob_parent) {
2421                                 print " | " .
2422                                         $cgi->a({-href => href(action=>"blobdiff",
2423                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2424                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2425                                                                file_name=>$file_name)},
2426                                                 "diff to current");
2427                         }
2428                 }
2429                 print "</td>\n" .
2430                       "</tr>\n";
2431         }
2432         if (defined $extra) {
2433                 print "<tr>\n" .
2434                       "<td colspan=\"4\">$extra</td>\n" .
2435                       "</tr>\n";
2436         }
2437         print "</table>\n";
2438 }
2439
2440 sub git_tags_body {
2441         # uses global variable $project
2442         my ($taglist, $from, $to, $extra) = @_;
2443         $from = 0 unless defined $from;
2444         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2445
2446         print "<table class=\"tags\" cellspacing=\"0\">\n";
2447         my $alternate = 1;
2448         for (my $i = $from; $i <= $to; $i++) {
2449                 my $entry = $taglist->[$i];
2450                 my %tag = %$entry;
2451                 my $comment = $tag{'subject'};
2452                 my $comment_short;
2453                 if (defined $comment) {
2454                         $comment_short = chop_str($comment, 30, 5);
2455                 }
2456                 if ($alternate) {
2457                         print "<tr class=\"dark\">\n";
2458                 } else {
2459                         print "<tr class=\"light\">\n";
2460                 }
2461                 $alternate ^= 1;
2462                 print "<td><i>$tag{'age'}</i></td>\n" .
2463                       "<td>" .
2464                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2465                                -class => "list name"}, esc_html($tag{'name'})) .
2466                       "</td>\n" .
2467                       "<td>";
2468                 if (defined $comment) {
2469                         print format_subject_html($comment, $comment_short,
2470                                                   href(action=>"tag", hash=>$tag{'id'}));
2471                 }
2472                 print "</td>\n" .
2473                       "<td class=\"selflink\">";
2474                 if ($tag{'type'} eq "tag") {
2475                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2476                 } else {
2477                         print "&nbsp;";
2478                 }
2479                 print "</td>\n" .
2480                       "<td class=\"link\">" . " | " .
2481                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2482                 if ($tag{'reftype'} eq "commit") {
2483                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2484                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2485                 } elsif ($tag{'reftype'} eq "blob") {
2486                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2487                 }
2488                 print "</td>\n" .
2489                       "</tr>";
2490         }
2491         if (defined $extra) {
2492                 print "<tr>\n" .
2493                       "<td colspan=\"5\">$extra</td>\n" .
2494                       "</tr>\n";
2495         }
2496         print "</table>\n";
2497 }
2498
2499 sub git_heads_body {
2500         # uses global variable $project
2501         my ($headlist, $head, $from, $to, $extra) = @_;
2502         $from = 0 unless defined $from;
2503         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2504
2505         print "<table class=\"heads\" cellspacing=\"0\">\n";
2506         my $alternate = 1;
2507         for (my $i = $from; $i <= $to; $i++) {
2508                 my $entry = $headlist->[$i];
2509                 my %ref = %$entry;
2510                 my $curr = $ref{'id'} eq $head;
2511                 if ($alternate) {
2512                         print "<tr class=\"dark\">\n";
2513                 } else {
2514                         print "<tr class=\"light\">\n";
2515                 }
2516                 $alternate ^= 1;
2517                 print "<td><i>$ref{'age'}</i></td>\n" .
2518                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2519                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2520                                -class => "list name"},esc_html($ref{'name'})) .
2521                       "</td>\n" .
2522                       "<td class=\"link\">" .
2523                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2524                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2525                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2526                       "</td>\n" .
2527                       "</tr>";
2528         }
2529         if (defined $extra) {
2530                 print "<tr>\n" .
2531                       "<td colspan=\"3\">$extra</td>\n" .
2532                       "</tr>\n";
2533         }
2534         print "</table>\n";
2535 }
2536
2537 ## ======================================================================
2538 ## ======================================================================
2539 ## actions
2540
2541 sub git_project_list {
2542         my $order = $cgi->param('o');
2543         if (defined $order && $order !~ m/project|descr|owner|age/) {
2544                 die_error(undef, "Unknown order parameter");
2545         }
2546
2547         my @list = git_get_projects_list();
2548         if (!@list) {
2549                 die_error(undef, "No projects found");
2550         }
2551
2552         git_header_html();
2553         if (-f $home_text) {
2554                 print "<div class=\"index_include\">\n";
2555                 open (my $fd, $home_text);
2556                 print <$fd>;
2557                 close $fd;
2558                 print "</div>\n";
2559         }
2560         git_project_list_body(\@list, $order);
2561         git_footer_html();
2562 }
2563
2564 sub git_forks {
2565         my $order = $cgi->param('o');
2566         if (defined $order && $order !~ m/project|descr|owner|age/) {
2567                 die_error(undef, "Unknown order parameter");
2568         }
2569
2570         my @list = git_get_projects_list($project);
2571         if (!@list) {
2572                 die_error(undef, "No forks found");
2573         }
2574
2575         git_header_html();
2576         git_print_page_nav('','');
2577         git_print_header_div('summary', "$project forks");
2578         git_project_list_body(\@list, $order);
2579         git_footer_html();
2580 }
2581
2582 sub git_project_index {
2583         my @projects = git_get_projects_list($project);
2584
2585         print $cgi->header(
2586                 -type => 'text/plain',
2587                 -charset => 'utf-8',
2588                 -content_disposition => 'inline; filename="index.aux"');
2589
2590         foreach my $pr (@projects) {
2591                 if (!exists $pr->{'owner'}) {
2592                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2593                 }
2594
2595                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2596                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2597                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2598                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2599                 $path  =~ s/ /\+/g;
2600                 $owner =~ s/ /\+/g;
2601
2602                 print "$path $owner\n";
2603         }
2604 }
2605
2606 sub git_summary {
2607         my $descr = git_get_project_description($project) || "none";
2608         my $head = git_get_head_hash($project);
2609         my %co = parse_commit($head);
2610         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2611
2612         my $owner = git_get_project_owner($project);
2613
2614         my $refs = git_get_references();
2615         my @taglist  = git_get_tags_list(15);
2616         my @headlist = git_get_heads_list(15);
2617         my @forklist;
2618         my ($check_forks) = gitweb_check_feature('forks');
2619
2620         if ($check_forks) {
2621                 @forklist = git_get_projects_list($project);
2622         }
2623
2624         git_header_html();
2625         git_print_page_nav('summary','', $head);
2626
2627         print "<div class=\"title\">&nbsp;</div>\n";
2628         print "<table cellspacing=\"0\">\n" .
2629               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2630               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2631               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2632         # use per project git URL list in $projectroot/$project/cloneurl
2633         # or make project git URL from git base URL and project name
2634         my $url_tag = "URL";
2635         my @url_list = git_get_project_url_list($project);
2636         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2637         foreach my $git_url (@url_list) {
2638                 next unless $git_url;
2639                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2640                 $url_tag = "";
2641         }
2642         print "</table>\n";
2643
2644         if (-s "$projectroot/$project/README.html") {
2645                 if (open my $fd, "$projectroot/$project/README.html") {
2646                         print "<div class=\"title\">readme</div>\n";
2647                         print $_ while (<$fd>);
2648                         close $fd;
2649                 }
2650         }
2651
2652         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2653                 git_get_head_hash($project), "--"
2654                 or die_error(undef, "Open git-rev-list failed");
2655         my @revlist = map { chomp; $_ } <$fd>;
2656         close $fd;
2657         git_print_header_div('shortlog');
2658         git_shortlog_body(\@revlist, 0, 15, $refs,
2659                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2660
2661         if (@taglist) {
2662                 git_print_header_div('tags');
2663                 git_tags_body(\@taglist, 0, 15,
2664                               $cgi->a({-href => href(action=>"tags")}, "..."));
2665         }
2666
2667         if (@headlist) {
2668                 git_print_header_div('heads');
2669                 git_heads_body(\@headlist, $head, 0, 15,
2670                                $cgi->a({-href => href(action=>"heads")}, "..."));
2671         }
2672
2673         if (@forklist) {
2674                 git_print_header_div('forks');
2675                 git_project_list_body(\@forklist, undef, 0, 15,
2676                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2677                                       'noheader');
2678         }
2679
2680         git_footer_html();
2681 }
2682
2683 sub git_tag {
2684         my $head = git_get_head_hash($project);
2685         git_header_html();
2686         git_print_page_nav('','', $head,undef,$head);
2687         my %tag = parse_tag($hash);
2688         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2689         print "<div class=\"title_text\">\n" .
2690               "<table cellspacing=\"0\">\n" .
2691               "<tr>\n" .
2692               "<td>object</td>\n" .
2693               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2694                                $tag{'object'}) . "</td>\n" .
2695               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2696                                               $tag{'type'}) . "</td>\n" .
2697               "</tr>\n";
2698         if (defined($tag{'author'})) {
2699                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2700                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2701                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2702                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2703                         "</td></tr>\n";
2704         }
2705         print "</table>\n\n" .
2706               "</div>\n";
2707         print "<div class=\"page_body\">";
2708         my $comment = $tag{'comment'};
2709         foreach my $line (@$comment) {
2710                 print esc_html($line) . "<br/>\n";
2711         }
2712         print "</div>\n";
2713         git_footer_html();
2714 }
2715
2716 sub git_blame2 {
2717         my $fd;
2718         my $ftype;
2719
2720         my ($have_blame) = gitweb_check_feature('blame');
2721         if (!$have_blame) {
2722                 die_error('403 Permission denied', "Permission denied");
2723         }
2724         die_error('404 Not Found', "File name not defined") if (!$file_name);
2725         $hash_base ||= git_get_head_hash($project);
2726         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2727         my %co = parse_commit($hash_base)
2728                 or die_error(undef, "Reading commit failed");
2729         if (!defined $hash) {
2730                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2731                         or die_error(undef, "Error looking up file");
2732         }
2733         $ftype = git_get_type($hash);
2734         if ($ftype !~ "blob") {
2735                 die_error("400 Bad Request", "Object is not a blob");
2736         }
2737         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2738               $file_name, $hash_base)
2739                 or die_error(undef, "Open git-blame failed");
2740         git_header_html();
2741         my $formats_nav =
2742                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2743                         "blob") .
2744                 " | " .
2745                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2746                         "history") .
2747                 " | " .
2748                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2749                         "HEAD");
2750         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2751         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2752         git_print_page_path($file_name, $ftype, $hash_base);
2753         my @rev_color = (qw(light2 dark2));
2754         my $num_colors = scalar(@rev_color);
2755         my $current_color = 0;
2756         my $last_rev;
2757         print <<HTML;
2758 <div class="page_body">
2759 <table class="blame">
2760 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2761 HTML
2762         my %metainfo = ();
2763         while (1) {
2764                 $_ = <$fd>;
2765                 last unless defined $_;
2766                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2767                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2768                 if (!exists $metainfo{$full_rev}) {
2769                         $metainfo{$full_rev} = {};
2770                 }
2771                 my $meta = $metainfo{$full_rev};
2772                 while (<$fd>) {
2773                         last if (s/^\t//);
2774                         if (/^(\S+) (.*)$/) {
2775                                 $meta->{$1} = $2;
2776                         }
2777                 }
2778                 my $data = $_;
2779                 my $rev = substr($full_rev, 0, 8);
2780                 my $author = $meta->{'author'};
2781                 my %date = parse_date($meta->{'author-time'},
2782                                       $meta->{'author-tz'});
2783                 my $date = $date{'iso-tz'};
2784                 if ($group_size) {
2785                         $current_color = ++$current_color % $num_colors;
2786                 }
2787                 print "<tr class=\"$rev_color[$current_color]\">\n";
2788                 if ($group_size) {
2789                         print "<td class=\"sha1\"";
2790                         print " title=\"". esc_html($author) . ", $date\"";
2791                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2792                         print ">";
2793                         print $cgi->a({-href => href(action=>"commit",
2794                                                      hash=>$full_rev,
2795                                                      file_name=>$file_name)},
2796                                       esc_html($rev));
2797                         print "</td>\n";
2798                 }
2799                 my $blamed = href(action => 'blame',
2800                                   file_name => $meta->{'filename'},
2801                                   hash_base => $full_rev);
2802                 print "<td class=\"linenr\">";
2803                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2804                                 -id => "l$lineno",
2805                                 -class => "linenr" },
2806                               esc_html($lineno));
2807                 print "</td>";
2808                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2809                 print "</tr>\n";
2810         }
2811         print "</table>\n";
2812         print "</div>";
2813         close $fd
2814                 or print "Reading blob failed\n";
2815         git_footer_html();
2816 }
2817
2818 sub git_blame {
2819         my $fd;
2820
2821         my ($have_blame) = gitweb_check_feature('blame');
2822         if (!$have_blame) {
2823                 die_error('403 Permission denied', "Permission denied");
2824         }
2825         die_error('404 Not Found', "File name not defined") if (!$file_name);
2826         $hash_base ||= git_get_head_hash($project);
2827         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2828         my %co = parse_commit($hash_base)
2829                 or die_error(undef, "Reading commit failed");
2830         if (!defined $hash) {
2831                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2832                         or die_error(undef, "Error lookup file");
2833         }
2834         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2835                 or die_error(undef, "Open git-annotate failed");
2836         git_header_html();
2837         my $formats_nav =
2838                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2839                         "blob") .
2840                 " | " .
2841                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2842                         "history") .
2843                 " | " .
2844                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2845                         "HEAD");
2846         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2847         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2848         git_print_page_path($file_name, 'blob', $hash_base);
2849         print "<div class=\"page_body\">\n";
2850         print <<HTML;
2851 <table class="blame">
2852   <tr>
2853     <th>Commit</th>
2854     <th>Age</th>
2855     <th>Author</th>
2856     <th>Line</th>
2857     <th>Data</th>
2858   </tr>
2859 HTML
2860         my @line_class = (qw(light dark));
2861         my $line_class_len = scalar (@line_class);
2862         my $line_class_num = $#line_class;
2863         while (my $line = <$fd>) {
2864                 my $long_rev;
2865                 my $short_rev;
2866                 my $author;
2867                 my $time;
2868                 my $lineno;
2869                 my $data;
2870                 my $age;
2871                 my $age_str;
2872                 my $age_class;
2873
2874                 chomp $line;
2875                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2876
2877                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2878                         $long_rev = $1;
2879                         $author   = $2;
2880                         $time     = $3;
2881                         $lineno   = $4;
2882                         $data     = $5;
2883                 } else {
2884                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2885                         next;
2886                 }
2887                 $short_rev  = substr ($long_rev, 0, 8);
2888                 $age        = time () - $time;
2889                 $age_str    = age_string ($age);
2890                 $age_str    =~ s/ /&nbsp;/g;
2891                 $age_class  = age_class($age);
2892                 $author     = esc_html ($author);
2893                 $author     =~ s/ /&nbsp;/g;
2894
2895                 $data = untabify($data);
2896                 $data = esc_html ($data);
2897
2898                 print <<HTML;
2899   <tr class="$line_class[$line_class_num]">
2900     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2901     <td class="$age_class">$age_str</td>
2902     <td>$author</td>
2903     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2904     <td class="pre">$data</td>
2905   </tr>
2906 HTML
2907         } # while (my $line = <$fd>)
2908         print "</table>\n\n";
2909         close $fd
2910                 or print "Reading blob failed.\n";
2911         print "</div>";
2912         git_footer_html();
2913 }
2914
2915 sub git_tags {
2916         my $head = git_get_head_hash($project);
2917         git_header_html();
2918         git_print_page_nav('','', $head,undef,$head);
2919         git_print_header_div('summary', $project);
2920
2921         my @tagslist = git_get_tags_list();
2922         if (@tagslist) {
2923                 git_tags_body(\@tagslist);
2924         }
2925         git_footer_html();
2926 }
2927
2928 sub git_heads {
2929         my $head = git_get_head_hash($project);
2930         git_header_html();
2931         git_print_page_nav('','', $head,undef,$head);
2932         git_print_header_div('summary', $project);
2933
2934         my @headslist = git_get_heads_list();
2935         if (@headslist) {
2936                 git_heads_body(\@headslist, $head);
2937         }
2938         git_footer_html();
2939 }
2940
2941 sub git_blob_plain {
2942         my $expires;
2943
2944         if (!defined $hash) {
2945                 if (defined $file_name) {
2946                         my $base = $hash_base || git_get_head_hash($project);
2947                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2948                                 or die_error(undef, "Error lookup file");
2949                 } else {
2950                         die_error(undef, "No file name defined");
2951                 }
2952         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2953                 # blobs defined by non-textual hash id's can be cached
2954                 $expires = "+1d";
2955         }
2956
2957         my $type = shift;
2958         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2959                 or die_error(undef, "Couldn't cat $file_name, $hash");
2960
2961         $type ||= blob_mimetype($fd, $file_name);
2962
2963         # save as filename, even when no $file_name is given
2964         my $save_as = "$hash";
2965         if (defined $file_name) {
2966                 $save_as = $file_name;
2967         } elsif ($type =~ m/^text\//) {
2968                 $save_as .= '.txt';
2969         }
2970
2971         print $cgi->header(
2972                 -type => "$type",
2973                 -expires=>$expires,
2974                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2975         undef $/;
2976         binmode STDOUT, ':raw';
2977         print <$fd>;
2978         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2979         $/ = "\n";
2980         close $fd;
2981 }
2982
2983 sub git_blob {
2984         my $expires;
2985
2986         if (!defined $hash) {
2987                 if (defined $file_name) {
2988                         my $base = $hash_base || git_get_head_hash($project);
2989                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2990                                 or die_error(undef, "Error lookup file");
2991                 } else {
2992                         die_error(undef, "No file name defined");
2993                 }
2994         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2995                 # blobs defined by non-textual hash id's can be cached
2996                 $expires = "+1d";
2997         }
2998
2999         my ($have_blame) = gitweb_check_feature('blame');
3000         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3001                 or die_error(undef, "Couldn't cat $file_name, $hash");
3002         my $mimetype = blob_mimetype($fd, $file_name);
3003         if ($mimetype !~ m/^text\//) {
3004                 close $fd;
3005                 return git_blob_plain($mimetype);
3006         }
3007         git_header_html(undef, $expires);
3008         my $formats_nav = '';
3009         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3010                 if (defined $file_name) {
3011                         if ($have_blame) {
3012                                 $formats_nav .=
3013                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3014                                                                hash=>$hash, file_name=>$file_name)},
3015                                                 "blame") .
3016                                         " | ";
3017                         }
3018                         $formats_nav .=
3019                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3020                                                        hash=>$hash, file_name=>$file_name)},
3021                                         "history") .
3022                                 " | " .
3023                                 $cgi->a({-href => href(action=>"blob_plain",
3024                                                        hash=>$hash, file_name=>$file_name)},
3025                                         "raw") .
3026                                 " | " .
3027                                 $cgi->a({-href => href(action=>"blob",
3028                                                        hash_base=>"HEAD", file_name=>$file_name)},
3029                                         "HEAD");
3030                 } else {
3031                         $formats_nav .=
3032                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3033                 }
3034                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3035                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3036         } else {
3037                 print "<div class=\"page_nav\">\n" .
3038                       "<br/><br/></div>\n" .
3039                       "<div class=\"title\">$hash</div>\n";
3040         }
3041         git_print_page_path($file_name, "blob", $hash_base);
3042         print "<div class=\"page_body\">\n";
3043         my $nr;
3044         while (my $line = <$fd>) {
3045                 chomp $line;
3046                 $nr++;
3047                 $line = untabify($line);
3048                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3049                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3050         }
3051         close $fd
3052                 or print "Reading blob failed.\n";
3053         print "</div>";
3054         git_footer_html();
3055 }
3056
3057 sub git_tree {
3058         my $have_snapshot = gitweb_have_snapshot();
3059
3060         if (!defined $hash_base) {
3061                 $hash_base = "HEAD";
3062         }
3063         if (!defined $hash) {
3064                 if (defined $file_name) {
3065                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3066                 } else {
3067                         $hash = $hash_base;
3068                 }
3069         }
3070         $/ = "\0";
3071         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3072                 or die_error(undef, "Open git-ls-tree failed");
3073         my @entries = map { chomp; $_ } <$fd>;
3074         close $fd or die_error(undef, "Reading tree failed");
3075         $/ = "\n";
3076
3077         my $refs = git_get_references();
3078         my $ref = format_ref_marker($refs, $hash_base);
3079         git_header_html();
3080         my $basedir = '';
3081         my ($have_blame) = gitweb_check_feature('blame');
3082         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3083                 my @views_nav = ();
3084                 if (defined $file_name) {
3085                         push @views_nav,
3086                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3087                                                        hash=>$hash, file_name=>$file_name)},
3088                                         "history"),
3089                                 $cgi->a({-href => href(action=>"tree",
3090                                                        hash_base=>"HEAD", file_name=>$file_name)},
3091                                         "HEAD"),
3092                 }
3093                 if ($have_snapshot) {
3094                         # FIXME: Should be available when we have no hash base as well.
3095                         push @views_nav,
3096                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3097                                         "snapshot");
3098                 }
3099                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3100                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3101         } else {
3102                 undef $hash_base;
3103                 print "<div class=\"page_nav\">\n";
3104                 print "<br/><br/></div>\n";
3105                 print "<div class=\"title\">$hash</div>\n";
3106         }
3107         if (defined $file_name) {
3108                 $basedir = $file_name;
3109                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3110                         $basedir .= '/';
3111                 }
3112         }
3113         git_print_page_path($file_name, 'tree', $hash_base);
3114         print "<div class=\"page_body\">\n";
3115         print "<table cellspacing=\"0\">\n";
3116         my $alternate = 1;
3117         # '..' (top directory) link if possible
3118         if (defined $hash_base &&
3119             defined $file_name && $file_name =~ m![^/]+$!) {
3120                 if ($alternate) {
3121                         print "<tr class=\"dark\">\n";
3122                 } else {
3123                         print "<tr class=\"light\">\n";
3124                 }
3125                 $alternate ^= 1;
3126
3127                 my $up = $file_name;
3128                 $up =~ s!/?[^/]+$!!;
3129                 undef $up unless $up;
3130                 # based on git_print_tree_entry
3131                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3132                 print '<td class="list">';
3133                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3134                                              file_name=>$up)},
3135                               "..");
3136                 print "</td>\n";
3137                 print "<td class=\"link\"></td>\n";
3138
3139                 print "</tr>\n";
3140         }
3141         foreach my $line (@entries) {
3142                 my %t = parse_ls_tree_line($line, -z => 1);
3143
3144                 if ($alternate) {
3145                         print "<tr class=\"dark\">\n";
3146                 } else {
3147                         print "<tr class=\"light\">\n";
3148                 }
3149                 $alternate ^= 1;
3150
3151                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3152
3153                 print "</tr>\n";
3154         }
3155         print "</table>\n" .
3156               "</div>";
3157         git_footer_html();
3158 }
3159
3160 sub git_snapshot {
3161         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3162         my $have_snapshot = (defined $ctype && defined $suffix);
3163         if (!$have_snapshot) {
3164                 die_error('403 Permission denied', "Permission denied");
3165         }
3166
3167         if (!defined $hash) {
3168                 $hash = git_get_head_hash($project);
3169         }
3170
3171         my $filename = basename($project) . "-$hash.tar.$suffix";
3172
3173         print $cgi->header(
3174                 -type => 'application/x-tar',
3175                 -content_encoding => $ctype,
3176                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3177                 -status => '200 OK');
3178
3179         my $git = git_cmd_str();
3180         my $name = $project;
3181         $name =~ s/\047/\047\\\047\047/g;
3182         open my $fd, "-|",
3183         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3184                 or die_error(undef, "Execute git-tar-tree failed.");
3185         binmode STDOUT, ':raw';
3186         print <$fd>;
3187         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3188         close $fd;
3189
3190 }
3191
3192 sub git_log {
3193         my $head = git_get_head_hash($project);
3194         if (!defined $hash) {
3195                 $hash = $head;
3196         }
3197         if (!defined $page) {
3198                 $page = 0;
3199         }
3200         my $refs = git_get_references();
3201
3202         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3203         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3204                 or die_error(undef, "Open git-rev-list failed");
3205         my @revlist = map { chomp; $_ } <$fd>;
3206         close $fd;
3207
3208         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3209
3210         git_header_html();
3211         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3212
3213         if (!@revlist) {
3214                 my %co = parse_commit($hash);
3215
3216                 git_print_header_div('summary', $project);
3217                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3218         }
3219         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3220                 my $commit = $revlist[$i];
3221                 my $ref = format_ref_marker($refs, $commit);
3222                 my %co = parse_commit($commit);
3223                 next if !%co;
3224                 my %ad = parse_date($co{'author_epoch'});
3225                 git_print_header_div('commit',
3226                                "<span class=\"age\">$co{'age_string'}</span>" .
3227                                esc_html($co{'title'}) . $ref,
3228                                $commit);
3229                 print "<div class=\"title_text\">\n" .
3230                       "<div class=\"log_link\">\n" .
3231                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3232                       " | " .
3233                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3234                       " | " .
3235                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3236                       "<br/>\n" .
3237                       "</div>\n" .
3238                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3239                       "</div>\n";
3240
3241                 print "<div class=\"log_body\">\n";
3242                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3243                 print "</div>\n";
3244         }
3245         git_footer_html();
3246 }
3247
3248 sub git_commit {
3249         my %co = parse_commit($hash);
3250         if (!%co) {
3251                 die_error(undef, "Unknown commit object");
3252         }
3253         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3254         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3255
3256         my $parent = $co{'parent'};
3257         if (!defined $parent) {
3258                 $parent = "--root";
3259         }
3260         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3261                 @diff_opts, $parent, $hash, "--"
3262                 or die_error(undef, "Open git-diff-tree failed");
3263         my @difftree = map { chomp; $_ } <$fd>;
3264         close $fd or die_error(undef, "Reading git-diff-tree failed");
3265
3266         # non-textual hash id's can be cached
3267         my $expires;
3268         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3269                 $expires = "+1d";
3270         }
3271         my $refs = git_get_references();
3272         my $ref = format_ref_marker($refs, $co{'id'});
3273
3274         my $have_snapshot = gitweb_have_snapshot();
3275
3276         my @views_nav = ();
3277         if (defined $file_name && defined $co{'parent'}) {
3278                 push @views_nav,
3279                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3280                                 "blame");
3281         }
3282         git_header_html(undef, $expires);
3283         git_print_page_nav('commit', '',
3284                            $hash, $co{'tree'}, $hash,
3285                            join (' | ', @views_nav));
3286
3287         if (defined $co{'parent'}) {
3288                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3289         } else {
3290                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3291         }
3292         print "<div class=\"title_text\">\n" .
3293               "<table cellspacing=\"0\">\n";
3294         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3295               "<tr>" .
3296               "<td></td><td> $ad{'rfc2822'}";
3297         if ($ad{'hour_local'} < 6) {
3298                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3299                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3300         } else {
3301                 printf(" (%02d:%02d %s)",
3302                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3303         }
3304         print "</td>" .
3305               "</tr>\n";
3306         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3307         print "<tr><td></td><td> $cd{'rfc2822'}" .
3308               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3309               "</td></tr>\n";
3310         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3311         print "<tr>" .
3312               "<td>tree</td>" .
3313               "<td class=\"sha1\">" .
3314               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3315                        class => "list"}, $co{'tree'}) .
3316               "</td>" .
3317               "<td class=\"link\">" .
3318               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3319                       "tree");
3320         if ($have_snapshot) {
3321                 print " | " .
3322                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3323         }
3324         print "</td>" .
3325               "</tr>\n";
3326         my $parents = $co{'parents'};
3327         foreach my $par (@$parents) {
3328                 print "<tr>" .
3329                       "<td>parent</td>" .
3330                       "<td class=\"sha1\">" .
3331                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3332                                class => "list"}, $par) .
3333                       "</td>" .
3334                       "<td class=\"link\">" .
3335                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3336                       " | " .
3337                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3338                       "</td>" .
3339                       "</tr>\n";
3340         }
3341         print "</table>".
3342               "</div>\n";
3343
3344         print "<div class=\"page_body\">\n";
3345         git_print_log($co{'comment'});
3346         print "</div>\n";
3347
3348         git_difftree_body(\@difftree, $hash, $parent);
3349
3350         git_footer_html();
3351 }
3352
3353 sub git_blobdiff {
3354         my $format = shift || 'html';
3355
3356         my $fd;
3357         my @difftree;
3358         my %diffinfo;
3359         my $expires;
3360
3361         # preparing $fd and %diffinfo for git_patchset_body
3362         # new style URI
3363         if (defined $hash_base && defined $hash_parent_base) {
3364                 if (defined $file_name) {
3365                         # read raw output
3366                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3367                                 $hash_parent_base, $hash_base,
3368                                 "--", $file_name
3369                                 or die_error(undef, "Open git-diff-tree failed");
3370                         @difftree = map { chomp; $_ } <$fd>;
3371                         close $fd
3372                                 or die_error(undef, "Reading git-diff-tree failed");
3373                         @difftree
3374                                 or die_error('404 Not Found', "Blob diff not found");
3375
3376                 } elsif (defined $hash &&
3377                          $hash =~ /[0-9a-fA-F]{40}/) {
3378                         # try to find filename from $hash
3379
3380                         # read filtered raw output
3381                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3382                                 $hash_parent_base, $hash_base, "--"
3383                                 or die_error(undef, "Open git-diff-tree failed");
3384                         @difftree =
3385                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3386                                 # $hash == to_id
3387                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3388                                 map { chomp; $_ } <$fd>;
3389                         close $fd
3390                                 or die_error(undef, "Reading git-diff-tree failed");
3391                         @difftree
3392                                 or die_error('404 Not Found', "Blob diff not found");
3393
3394                 } else {
3395                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3396                 }
3397
3398                 if (@difftree > 1) {
3399                         die_error('404 Not Found', "Ambiguous blob diff specification");
3400                 }
3401
3402                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3403                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3404                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3405
3406                 $hash_parent ||= $diffinfo{'from_id'};
3407                 $hash        ||= $diffinfo{'to_id'};
3408
3409                 # non-textual hash id's can be cached
3410                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3411                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3412                         $expires = '+1d';
3413                 }
3414
3415                 # open patch output
3416                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3417                         '-p', $hash_parent_base, $hash_base,
3418                         "--", $file_name
3419                         or die_error(undef, "Open git-diff-tree failed");
3420         }
3421
3422         # old/legacy style URI
3423         if (!%diffinfo && # if new style URI failed
3424             defined $hash && defined $hash_parent) {
3425                 # fake git-diff-tree raw output
3426                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3427                 $diffinfo{'from_id'} = $hash_parent;
3428                 $diffinfo{'to_id'}   = $hash;
3429                 if (defined $file_name) {
3430                         if (defined $file_parent) {
3431                                 $diffinfo{'status'} = '2';
3432                                 $diffinfo{'from_file'} = $file_parent;
3433                                 $diffinfo{'to_file'}   = $file_name;
3434                         } else { # assume not renamed
3435                                 $diffinfo{'status'} = '1';
3436                                 $diffinfo{'from_file'} = $file_name;
3437                                 $diffinfo{'to_file'}   = $file_name;
3438                         }
3439                 } else { # no filename given
3440                         $diffinfo{'status'} = '2';
3441                         $diffinfo{'from_file'} = $hash_parent;
3442                         $diffinfo{'to_file'}   = $hash;
3443                 }
3444
3445                 # non-textual hash id's can be cached
3446                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3447                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3448                         $expires = '+1d';
3449                 }
3450
3451                 # open patch output
3452                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3453                         $hash_parent, $hash, "--"
3454                         or die_error(undef, "Open git-diff failed");
3455         } else  {
3456                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3457                         unless %diffinfo;
3458         }
3459
3460         # header
3461         if ($format eq 'html') {
3462                 my $formats_nav =
3463                         $cgi->a({-href => href(action=>"blobdiff_plain",
3464                                                hash=>$hash, hash_parent=>$hash_parent,
3465                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3466                                                file_name=>$file_name, file_parent=>$file_parent)},
3467                                 "raw");
3468                 git_header_html(undef, $expires);
3469                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3470                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3471                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3472                 } else {
3473                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3474                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3475                 }
3476                 if (defined $file_name) {
3477                         git_print_page_path($file_name, "blob", $hash_base);
3478                 } else {
3479                         print "<div class=\"page_path\"></div>\n";
3480                 }
3481
3482         } elsif ($format eq 'plain') {
3483                 print $cgi->header(
3484                         -type => 'text/plain',
3485                         -charset => 'utf-8',
3486                         -expires => $expires,
3487                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3488
3489                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3490
3491         } else {
3492                 die_error(undef, "Unknown blobdiff format");
3493         }
3494
3495         # patch
3496         if ($format eq 'html') {
3497                 print "<div class=\"page_body\">\n";
3498
3499                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3500                 close $fd;
3501
3502                 print "</div>\n"; # class="page_body"
3503                 git_footer_html();
3504
3505         } else {
3506                 while (my $line = <$fd>) {
3507                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3508                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3509
3510                         print $line;
3511
3512                         last if $line =~ m!^\+\+\+!;
3513                 }
3514                 local $/ = undef;
3515                 print <$fd>;
3516                 close $fd;
3517         }
3518 }
3519
3520 sub git_blobdiff_plain {
3521         git_blobdiff('plain');
3522 }
3523
3524 sub git_commitdiff {
3525         my $format = shift || 'html';
3526         my %co = parse_commit($hash);
3527         if (!%co) {
3528                 die_error(undef, "Unknown commit object");
3529         }
3530
3531         # we need to prepare $formats_nav before any parameter munging
3532         my $formats_nav;
3533         if ($format eq 'html') {
3534                 $formats_nav =
3535                         $cgi->a({-href => href(action=>"commitdiff_plain",
3536                                                hash=>$hash, hash_parent=>$hash_parent)},
3537                                 "raw");
3538
3539                 if (defined $hash_parent) {
3540                         # commitdiff with two commits given
3541                         my $hash_parent_short = $hash_parent;
3542                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3543                                 $hash_parent_short = substr($hash_parent, 0, 7);
3544                         }
3545                         $formats_nav .=
3546                                 ' (from: ' .
3547                                 $cgi->a({-href => href(action=>"commitdiff",
3548                                                        hash=>$hash_parent)},
3549                                         esc_html($hash_parent_short)) .
3550                                 ')';
3551                 } elsif (!$co{'parent'}) {
3552                         # --root commitdiff
3553                         $formats_nav .= ' (initial)';
3554                 } elsif (scalar @{$co{'parents'}} == 1) {
3555                         # single parent commit
3556                         $formats_nav .=
3557                                 ' (parent: ' .
3558                                 $cgi->a({-href => href(action=>"commitdiff",
3559                                                        hash=>$co{'parent'})},
3560                                         esc_html(substr($co{'parent'}, 0, 7))) .
3561                                 ')';
3562                 } else {
3563                         # merge commit
3564                         $formats_nav .=
3565                                 ' (merge: ' .
3566                                 join(' ', map {
3567                                         $cgi->a({-href => href(action=>"commitdiff",
3568                                                                hash=>$_)},
3569                                                 esc_html(substr($_, 0, 7)));
3570                                 } @{$co{'parents'}} ) .
3571                                 ')';
3572                 }
3573         }
3574
3575         if (!defined $hash_parent) {
3576                 $hash_parent = $co{'parent'} || '--root';
3577         }
3578
3579         # read commitdiff
3580         my $fd;
3581         my @difftree;
3582         if ($format eq 'html') {
3583                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3584                         "--no-commit-id", "--patch-with-raw", "--full-index",
3585                         $hash_parent, $hash, "--"
3586                         or die_error(undef, "Open git-diff-tree failed");
3587
3588                 while (chomp(my $line = <$fd>)) {
3589                         # empty line ends raw part of diff-tree output
3590                         last unless $line;
3591                         push @difftree, $line;
3592                 }
3593
3594         } elsif ($format eq 'plain') {
3595                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3596                         '-p', $hash_parent, $hash, "--"
3597                         or die_error(undef, "Open git-diff-tree failed");
3598
3599         } else {
3600                 die_error(undef, "Unknown commitdiff format");
3601         }
3602
3603         # non-textual hash id's can be cached
3604         my $expires;
3605         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3606                 $expires = "+1d";
3607         }
3608
3609         # write commit message
3610         if ($format eq 'html') {
3611                 my $refs = git_get_references();
3612                 my $ref = format_ref_marker($refs, $co{'id'});
3613
3614                 git_header_html(undef, $expires);
3615                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3616                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3617                 git_print_authorship(\%co);
3618                 print "<div class=\"page_body\">\n";
3619                 if (@{$co{'comment'}} > 1) {
3620                         print "<div class=\"log\">\n";
3621                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3622                         print "</div>\n"; # class="log"
3623                 }
3624
3625         } elsif ($format eq 'plain') {
3626                 my $refs = git_get_references("tags");
3627                 my $tagname = git_get_rev_name_tags($hash);
3628                 my $filename = basename($project) . "-$hash.patch";
3629
3630                 print $cgi->header(
3631                         -type => 'text/plain',
3632                         -charset => 'utf-8',
3633                         -expires => $expires,
3634                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3635                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3636                 print <<TEXT;
3637 From: $co{'author'}
3638 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3639 Subject: $co{'title'}
3640 TEXT
3641                 print "X-Git-Tag: $tagname\n" if $tagname;
3642                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3643
3644                 foreach my $line (@{$co{'comment'}}) {
3645                         print "$line\n";
3646                 }
3647                 print "---\n\n";
3648         }
3649
3650         # write patch
3651         if ($format eq 'html') {
3652                 git_difftree_body(\@difftree, $hash, $hash_parent);
3653                 print "<br/>\n";
3654
3655                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3656                 close $fd;
3657                 print "</div>\n"; # class="page_body"
3658                 git_footer_html();
3659
3660         } elsif ($format eq 'plain') {
3661                 local $/ = undef;
3662                 print <$fd>;
3663                 close $fd
3664                         or print "Reading git-diff-tree failed\n";
3665         }
3666 }
3667
3668 sub git_commitdiff_plain {
3669         git_commitdiff('plain');
3670 }
3671
3672 sub git_history {
3673         if (!defined $hash_base) {
3674                 $hash_base = git_get_head_hash($project);
3675         }
3676         if (!defined $page) {
3677                 $page = 0;
3678         }
3679         my $ftype;
3680         my %co = parse_commit($hash_base);
3681         if (!%co) {
3682                 die_error(undef, "Unknown commit object");
3683         }
3684
3685         my $refs = git_get_references();
3686         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3687
3688         if (!defined $hash && defined $file_name) {
3689                 $hash = git_get_hash_by_path($hash_base, $file_name);
3690         }
3691         if (defined $hash) {
3692                 $ftype = git_get_type($hash);
3693         }
3694
3695         open my $fd, "-|",
3696                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3697                         or die_error(undef, "Open git-rev-list-failed");
3698         my @revlist = map { chomp; $_ } <$fd>;
3699         close $fd
3700                 or die_error(undef, "Reading git-rev-list failed");
3701
3702         my $paging_nav = '';
3703         if ($page > 0) {
3704                 $paging_nav .=
3705                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3706                                                file_name=>$file_name)},
3707                                 "first");
3708                 $paging_nav .= " &sdot; " .
3709                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3710                                                file_name=>$file_name, page=>$page-1),
3711                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3712         } else {
3713                 $paging_nav .= "first";
3714                 $paging_nav .= " &sdot; prev";
3715         }
3716         if ($#revlist >= (100 * ($page+1)-1)) {
3717                 $paging_nav .= " &sdot; " .
3718                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3719                                                file_name=>$file_name, page=>$page+1),
3720                                  -accesskey => "n", -title => "Alt-n"}, "next");
3721         } else {
3722                 $paging_nav .= " &sdot; next";
3723         }
3724         my $next_link = '';
3725         if ($#revlist >= (100 * ($page+1)-1)) {
3726                 $next_link =
3727                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3728                                                file_name=>$file_name, page=>$page+1),
3729                                  -title => "Alt-n"}, "next");
3730         }
3731
3732         git_header_html();
3733         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3734         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3735         git_print_page_path($file_name, $ftype, $hash_base);
3736
3737         git_history_body(\@revlist, ($page * 100), $#revlist,
3738                          $refs, $hash_base, $ftype, $next_link);
3739
3740         git_footer_html();
3741 }
3742
3743 sub git_search {
3744         if (!defined $searchtext) {
3745                 die_error(undef, "Text field empty");
3746         }
3747         if (!defined $hash) {
3748                 $hash = git_get_head_hash($project);
3749         }
3750         my %co = parse_commit($hash);
3751         if (!%co) {
3752                 die_error(undef, "Unknown commit object");
3753         }
3754
3755         $searchtype ||= 'commit';
3756         if ($searchtype eq 'pickaxe') {
3757                 # pickaxe may take all resources of your box and run for several minutes
3758                 # with every query - so decide by yourself how public you make this feature
3759                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3760                 if (!$have_pickaxe) {
3761                         die_error('403 Permission denied', "Permission denied");
3762                 }
3763         }
3764
3765         git_header_html();
3766         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3767         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3768
3769         print "<table cellspacing=\"0\">\n";
3770         my $alternate = 1;
3771         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3772                 $/ = "\0";
3773                 open my $fd, "-|", git_cmd(), "rev-list",
3774                         "--header", "--parents", $hash, "--"
3775                         or next;
3776                 while (my $commit_text = <$fd>) {
3777                         if (!grep m/$searchtext/i, $commit_text) {
3778                                 next;
3779                         }
3780                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3781                                 next;
3782                         }
3783                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3784                                 next;
3785                         }
3786                         my @commit_lines = split "\n", $commit_text;
3787                         my %co = parse_commit(undef, \@commit_lines);
3788                         if (!%co) {
3789                                 next;
3790                         }
3791                         if ($alternate) {
3792                                 print "<tr class=\"dark\">\n";
3793                         } else {
3794                                 print "<tr class=\"light\">\n";
3795                         }
3796                         $alternate ^= 1;
3797                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3798                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3799                               "<td>" .
3800                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3801                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3802                         my $comment = $co{'comment'};
3803                         foreach my $line (@$comment) {
3804                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3805                                         my $lead = esc_html($1) || "";
3806                                         $lead = chop_str($lead, 30, 10);
3807                                         my $match = esc_html($2) || "";
3808                                         my $trail = esc_html($3) || "";
3809                                         $trail = chop_str($trail, 30, 10);
3810                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3811                                         print chop_str($text, 80, 5) . "<br/>\n";
3812                                 }
3813                         }
3814                         print "</td>\n" .
3815                               "<td class=\"link\">" .
3816                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3817                               " | " .
3818                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3819                         print "</td>\n" .
3820                               "</tr>\n";
3821                 }
3822                 close $fd;
3823         }
3824
3825         if ($searchtype eq 'pickaxe') {
3826                 $/ = "\n";
3827                 my $git_command = git_cmd_str();
3828                 open my $fd, "-|", "$git_command rev-list $hash | " .
3829                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3830                 undef %co;
3831                 my @files;
3832                 while (my $line = <$fd>) {
3833                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3834                                 my %set;
3835                                 $set{'file'} = $6;
3836                                 $set{'from_id'} = $3;
3837                                 $set{'to_id'} = $4;
3838                                 $set{'id'} = $set{'to_id'};
3839                                 if ($set{'id'} =~ m/0{40}/) {
3840                                         $set{'id'} = $set{'from_id'};
3841                                 }
3842                                 if ($set{'id'} =~ m/0{40}/) {
3843                                         next;
3844                                 }
3845                                 push @files, \%set;
3846                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3847                                 if (%co) {
3848                                         if ($alternate) {
3849                                                 print "<tr class=\"dark\">\n";
3850                                         } else {
3851                                                 print "<tr class=\"light\">\n";
3852                                         }
3853                                         $alternate ^= 1;
3854                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3855                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3856                                               "<td>" .
3857                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3858                                                       -class => "list subject"},
3859                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3860                                         while (my $setref = shift @files) {
3861                                                 my %set = %$setref;
3862                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3863                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3864                                                               -class => "list"},
3865                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3866                                                       "<br/>\n";
3867                                         }
3868                                         print "</td>\n" .
3869                                               "<td class=\"link\">" .
3870                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3871                                               " | " .
3872                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3873                                         print "</td>\n" .
3874                                               "</tr>\n";
3875                                 }
3876                                 %co = parse_commit($1);
3877                         }
3878                 }
3879                 close $fd;
3880         }
3881         print "</table>\n";
3882         git_footer_html();
3883 }
3884
3885 sub git_search_help {
3886         git_header_html();
3887         git_print_page_nav('','', $hash,$hash,$hash);
3888         print <<EOT;
3889 <dl>
3890 <dt><b>commit</b></dt>
3891 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3892 <dt><b>author</b></dt>
3893 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3894 <dt><b>committer</b></dt>
3895 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3896 EOT
3897         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3898         if ($have_pickaxe) {
3899                 print <<EOT;
3900 <dt><b>pickaxe</b></dt>
3901 <dd>All commits that caused the string to appear or disappear from any file (changes that
3902 added, removed or "modified" the string) will be listed. This search can take a while and
3903 takes a lot of strain on the server, so please use it wisely.</dd>
3904 EOT
3905         }
3906         print "</dl>\n";
3907         git_footer_html();
3908 }
3909
3910 sub git_shortlog {
3911         my $head = git_get_head_hash($project);
3912         if (!defined $hash) {
3913                 $hash = $head;
3914         }
3915         if (!defined $page) {
3916                 $page = 0;
3917         }
3918         my $refs = git_get_references();
3919
3920         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3921         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3922                 or die_error(undef, "Open git-rev-list failed");
3923         my @revlist = map { chomp; $_ } <$fd>;
3924         close $fd;
3925
3926         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3927         my $next_link = '';
3928         if ($#revlist >= (100 * ($page+1)-1)) {
3929                 $next_link =
3930                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3931                                  -title => "Alt-n"}, "next");
3932         }
3933
3934
3935         git_header_html();
3936         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3937         git_print_header_div('summary', $project);
3938
3939         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3940
3941         git_footer_html();
3942 }
3943
3944 ## ......................................................................
3945 ## feeds (RSS, OPML)
3946
3947 sub git_rss {
3948         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3949         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
3950                 git_get_head_hash($project), "--"
3951                 or die_error(undef, "Open git-rev-list failed");
3952         my @revlist = map { chomp; $_ } <$fd>;
3953         close $fd or die_error(undef, "Reading git-rev-list failed");
3954         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3955         print <<XML;
3956 <?xml version="1.0" encoding="utf-8"?>
3957 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3958 <channel>
3959 <title>$project $my_uri $my_url</title>
3960 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3961 <description>$project log</description>
3962 <language>en</language>
3963 XML
3964
3965         for (my $i = 0; $i <= $#revlist; $i++) {
3966                 my $commit = $revlist[$i];
3967                 my %co = parse_commit($commit);
3968                 # we read 150, we always show 30 and the ones more recent than 48 hours
3969                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3970                         last;
3971                 }
3972                 my %cd = parse_date($co{'committer_epoch'});
3973                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3974                         $co{'parent'}, $co{'id'}, "--"
3975                         or next;
3976                 my @difftree = map { chomp; $_ } <$fd>;
3977                 close $fd
3978                         or next;
3979                 print "<item>\n" .
3980                       "<title>" .
3981                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3982                       "</title>\n" .
3983                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3984                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3985                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3986                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3987                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3988                       "<content:encoded>" .
3989                       "<![CDATA[\n";
3990                 my $comment = $co{'comment'};
3991                 foreach my $line (@$comment) {
3992                         $line = to_utf8($line);
3993                         print "$line<br/>\n";
3994                 }
3995                 print "<br/>\n";
3996                 foreach my $line (@difftree) {
3997                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3998                                 next;
3999                         }
4000                         my $file = esc_html(unquote($7));
4001                         $file = to_utf8($file);
4002                         print "$file<br/>\n";
4003                 }
4004                 print "]]>\n" .
4005                       "</content:encoded>\n" .
4006                       "</item>\n";
4007         }
4008         print "</channel></rss>";
4009 }
4010
4011 sub git_opml {
4012         my @list = git_get_projects_list();
4013
4014         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4015         print <<XML;
4016 <?xml version="1.0" encoding="utf-8"?>
4017 <opml version="1.0">
4018 <head>
4019   <title>$site_name OPML Export</title>
4020 </head>
4021 <body>
4022 <outline text="git RSS feeds">
4023 XML
4024
4025         foreach my $pr (@list) {
4026                 my %proj = %$pr;
4027                 my $head = git_get_head_hash($proj{'path'});
4028                 if (!defined $head) {
4029                         next;
4030                 }
4031                 $git_dir = "$projectroot/$proj{'path'}";
4032                 my %co = parse_commit($head);
4033                 if (!%co) {
4034                         next;
4035                 }
4036
4037                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4038                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4039                 my $html = "$my_url?p=$proj{'path'};a=summary";
4040                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4041         }
4042         print <<XML;
4043 </outline>
4044 </body>
4045 </opml>
4046 XML
4047 }