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                 my $pfxlen = length("$dir");
 927
 928                 my $check_forks = gitweb_check_feature('forks');
 929
 930                 File::Find::find({
 931                         follow_fast => 1, # follow symbolic links
 932                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 933                         wanted => sub {
 934                                 # skip project-list toplevel, if we get it.
 935                                 return if (m!^[/.]$!);
 936                                 # only directories can be git repositories
 937                                 return unless (-d $_);
 938
 939                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 940                                 # we check related file in $projectroot
 941                                 if ($check_forks and $subdir =~ m#/.#) {
 942                                         $File::Find::prune = 1;
 943                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
 944                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
 945                                         $File::Find::prune = 1;
 946                                 }
 947                         },
 948                 }, "$dir");
 949
 950         } elsif (-f $projects_list) {
 951                 # read from file(url-encoded):
 952                 # 'git%2Fgit.git Linus+Torvalds'
 953                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 954                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 955                 open my ($fd), $projects_list or return;
 956                 while (my $line = <$fd>) {
 957                         chomp $line;
 958                         my ($path, $owner) = split ' ', $line;
 959                         $path = unescape($path);
 960                         $owner = unescape($owner);
 961                         if (!defined $path) {
 962                                 next;
 963                         }
 964                         if (check_export_ok("$projectroot/$path")) {
 965                                 my $pr = {
 966                                         path => $path,
 967                                         owner => to_utf8($owner),
 968                                 };
 969                                 push @list, $pr
 970                         }
 971                 }
 972                 close $fd;
 973         }
 974         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 975         return @list;
 976 }
 977
 978 sub git_get_project_owner {
 979         my $project = shift;
 980         my $owner;
 981
 982         return undef unless $project;
 983
 984         # read from file (url-encoded):
 985         # 'git%2Fgit.git Linus+Torvalds'
 986         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 987         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 988         if (-f $projects_list) {
 989                 open (my $fd , $projects_list);
 990                 while (my $line = <$fd>) {
 991                         chomp $line;
 992                         my ($pr, $ow) = split ' ', $line;
 993                         $pr = unescape($pr);
 994                         $ow = unescape($ow);
 995                         if ($pr eq $project) {
 996                                 $owner = to_utf8($ow);
 997                                 last;
 998                         }
 999                 }
1000                 close $fd;
1001         }
1002         if (!defined $owner) {
1003                 $owner = get_file_owner("$projectroot/$project");
1004         }
1005
1006         return $owner;
1007 }
1008
1009 sub git_get_last_activity {
1010         my ($path) = @_;
1011         my $fd;
1012
1013         $git_dir = "$projectroot/$path";
1014         open($fd, "-|", git_cmd(), 'for-each-ref',
1015              '--format=%(refname) %(committer)',
1016              '--sort=-committerdate',
1017              'refs/heads') or return;
1018         my $most_recent = <$fd>;
1019         close $fd or return;
1020         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1021                 my $timestamp = $1;
1022                 my $age = time - $timestamp;
1023                 return ($age, age_string($age));
1024         }
1025 }
1026
1027 sub git_get_references {
1028         my $type = shift || "";
1029         my %refs;
1030         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1031         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1032         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1033                 or return;
1034
1035         while (my $line = <$fd>) {
1036                 chomp $line;
1037                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1038                         if (defined $refs{$1}) {
1039                                 push @{$refs{$1}}, $2;
1040                         } else {
1041                                 $refs{$1} = [ $2 ];
1042                         }
1043                 }
1044         }
1045         close $fd or return;
1046         return \%refs;
1047 }
1048
1049 sub git_get_rev_name_tags {
1050         my $hash = shift || return undef;
1051
1052         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1053                 or return;
1054         my $name_rev = <$fd>;
1055         close $fd;
1056
1057         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1058                 return $1;
1059         } else {
1060                 # catches also '$hash undefined' output
1061                 return undef;
1062         }
1063 }
1064
1065 ## ----------------------------------------------------------------------
1066 ## parse to hash functions
1067
1068 sub parse_date {
1069         my $epoch = shift;
1070         my $tz = shift || "-0000";
1071
1072         my %date;
1073         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1074         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1075         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1076         $date{'hour'} = $hour;
1077         $date{'minute'} = $min;
1078         $date{'mday'} = $mday;
1079         $date{'day'} = $days[$wday];
1080         $date{'month'} = $months[$mon];
1081         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1082                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1083         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1084                              $mday, $months[$mon], $hour ,$min;
1085
1086         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1087         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1088         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1089         $date{'hour_local'} = $hour;
1090         $date{'minute_local'} = $min;
1091         $date{'tz_local'} = $tz;
1092         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1093                                    1900+$year, $mon+1, $mday,
1094                                    $hour, $min, $sec, $tz);
1095         return %date;
1096 }
1097
1098 sub parse_tag {
1099         my $tag_id = shift;
1100         my %tag;
1101         my @comment;
1102
1103         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1104         $tag{'id'} = $tag_id;
1105         while (my $line = <$fd>) {
1106                 chomp $line;
1107                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1108                         $tag{'object'} = $1;
1109                 } elsif ($line =~ m/^type (.+)$/) {
1110                         $tag{'type'} = $1;
1111                 } elsif ($line =~ m/^tag (.+)$/) {
1112                         $tag{'name'} = $1;
1113                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1114                         $tag{'author'} = $1;
1115                         $tag{'epoch'} = $2;
1116                         $tag{'tz'} = $3;
1117                 } elsif ($line =~ m/--BEGIN/) {
1118                         push @comment, $line;
1119                         last;
1120                 } elsif ($line eq "") {
1121                         last;
1122                 }
1123         }
1124         push @comment, <$fd>;
1125         $tag{'comment'} = \@comment;
1126         close $fd or return;
1127         if (!defined $tag{'name'}) {
1128                 return
1129         };
1130         return %tag
1131 }
1132
1133 sub parse_commit {
1134         my $commit_id = shift;
1135         my $commit_text = shift;
1136
1137         my @commit_lines;
1138         my %co;
1139
1140         if (defined $commit_text) {
1141                 @commit_lines = @$commit_text;
1142         } else {
1143                 local $/ = "\0";
1144                 open my $fd, "-|", git_cmd(), "rev-list",
1145                         "--header", "--parents", "--max-count=1",
1146                         $commit_id, "--"
1147                         or return;
1148                 @commit_lines = split '\n', <$fd>;
1149                 close $fd or return;
1150                 pop @commit_lines;
1151         }
1152         my $header = shift @commit_lines;
1153         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1154                 return;
1155         }
1156         ($co{'id'}, my @parents) = split ' ', $header;
1157         $co{'parents'} = \@parents;
1158         $co{'parent'} = $parents[0];
1159         while (my $line = shift @commit_lines) {
1160                 last if $line eq "\n";
1161                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1162                         $co{'tree'} = $1;
1163                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1164                         $co{'author'} = $1;
1165                         $co{'author_epoch'} = $2;
1166                         $co{'author_tz'} = $3;
1167                         if ($co{'author'} =~ m/^([^<]+) </) {
1168                                 $co{'author_name'} = $1;
1169                         } else {
1170                                 $co{'author_name'} = $co{'author'};
1171                         }
1172                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1173                         $co{'committer'} = $1;
1174                         $co{'committer_epoch'} = $2;
1175                         $co{'committer_tz'} = $3;
1176                         $co{'committer_name'} = $co{'committer'};
1177                         $co{'committer_name'} =~ s/ <.*//;
1178                 }
1179         }
1180         if (!defined $co{'tree'}) {
1181                 return;
1182         };
1183
1184         foreach my $title (@commit_lines) {
1185                 $title =~ s/^    //;
1186                 if ($title ne "") {
1187                         $co{'title'} = chop_str($title, 80, 5);
1188                         # remove leading stuff of merges to make the interesting part visible
1189                         if (length($title) > 50) {
1190                                 $title =~ s/^Automatic //;
1191                                 $title =~ s/^merge (of|with) /Merge ... /i;
1192                                 if (length($title) > 50) {
1193                                         $title =~ s/(http|rsync):\/\///;
1194                                 }
1195                                 if (length($title) > 50) {
1196                                         $title =~ s/(master|www|rsync)\.//;
1197                                 }
1198                                 if (length($title) > 50) {
1199                                         $title =~ s/kernel.org:?//;
1200                                 }
1201                                 if (length($title) > 50) {
1202                                         $title =~ s/\/pub\/scm//;
1203                                 }
1204                         }
1205                         $co{'title_short'} = chop_str($title, 50, 5);
1206                         last;
1207                 }
1208         }
1209         if ($co{'title'} eq "") {
1210                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1211         }
1212         # remove added spaces
1213         foreach my $line (@commit_lines) {
1214                 $line =~ s/^    //;
1215         }
1216         $co{'comment'} = \@commit_lines;
1217
1218         my $age = time - $co{'committer_epoch'};
1219         $co{'age'} = $age;
1220         $co{'age_string'} = age_string($age);
1221         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1222         if ($age > 60*60*24*7*2) {
1223                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1224                 $co{'age_string_age'} = $co{'age_string'};
1225         } else {
1226                 $co{'age_string_date'} = $co{'age_string'};
1227                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1228         }
1229         return %co;
1230 }
1231
1232 # parse ref from ref_file, given by ref_id, with given type
1233 sub parse_ref {
1234         my $ref_file = shift;
1235         my $ref_id = shift;
1236         my $type = shift || git_get_type($ref_id);
1237         my %ref_item;
1238
1239         $ref_item{'type'} = $type;
1240         $ref_item{'id'} = $ref_id;
1241         $ref_item{'epoch'} = 0;
1242         $ref_item{'age'} = "unknown";
1243         if ($type eq "tag") {
1244                 my %tag = parse_tag($ref_id);
1245                 $ref_item{'comment'} = $tag{'comment'};
1246                 if ($tag{'type'} eq "commit") {
1247                         my %co = parse_commit($tag{'object'});
1248                         $ref_item{'epoch'} = $co{'committer_epoch'};
1249                         $ref_item{'age'} = $co{'age_string'};
1250                 } elsif (defined($tag{'epoch'})) {
1251                         my $age = time - $tag{'epoch'};
1252                         $ref_item{'epoch'} = $tag{'epoch'};
1253                         $ref_item{'age'} = age_string($age);
1254                 }
1255                 $ref_item{'reftype'} = $tag{'type'};
1256                 $ref_item{'name'} = $tag{'name'};
1257                 $ref_item{'refid'} = $tag{'object'};
1258         } elsif ($type eq "commit"){
1259                 my %co = parse_commit($ref_id);
1260                 $ref_item{'reftype'} = "commit";
1261                 $ref_item{'name'} = $ref_file;
1262                 $ref_item{'title'} = $co{'title'};
1263                 $ref_item{'refid'} = $ref_id;
1264                 $ref_item{'epoch'} = $co{'committer_epoch'};
1265                 $ref_item{'age'} = $co{'age_string'};
1266         } else {
1267                 $ref_item{'reftype'} = $type;
1268                 $ref_item{'name'} = $ref_file;
1269                 $ref_item{'refid'} = $ref_id;
1270         }
1271
1272         return %ref_item;
1273 }
1274
1275 # parse line of git-diff-tree "raw" output
1276 sub parse_difftree_raw_line {
1277         my $line = shift;
1278         my %res;
1279
1280         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1281         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1282         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1283                 $res{'from_mode'} = $1;
1284                 $res{'to_mode'} = $2;
1285                 $res{'from_id'} = $3;
1286                 $res{'to_id'} = $4;
1287                 $res{'status'} = $5;
1288                 $res{'similarity'} = $6;
1289                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1290                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1291                 } else {
1292                         $res{'file'} = unquote($7);
1293                 }
1294         }
1295         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1296         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1297                 $res{'commit'} = $1;
1298         }
1299
1300         return wantarray ? %res : \%res;
1301 }
1302
1303 # parse line of git-ls-tree output
1304 sub parse_ls_tree_line ($;%) {
1305         my $line = shift;
1306         my %opts = @_;
1307         my %res;
1308
1309         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1310         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1311
1312         $res{'mode'} = $1;
1313         $res{'type'} = $2;
1314         $res{'hash'} = $3;
1315         if ($opts{'-z'}) {
1316                 $res{'name'} = $4;
1317         } else {
1318                 $res{'name'} = unquote($4);
1319         }
1320
1321         return wantarray ? %res : \%res;
1322 }
1323
1324 ## ......................................................................
1325 ## parse to array of hashes functions
1326
1327 sub git_get_heads_list {
1328         my $limit = shift;
1329         my @headslist;
1330
1331         open my $fd, '-|', git_cmd(), 'for-each-ref',
1332                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1333                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1334                 'refs/heads'
1335                 or return;
1336         while (my $line = <$fd>) {
1337                 my %ref_item;
1338
1339                 chomp $line;
1340                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1341                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1342                 my ($committer, $epoch, $tz) =
1343                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1344                 $name =~ s!^refs/heads/!!;
1345
1346                 $ref_item{'name'}  = $name;
1347                 $ref_item{'id'}    = $hash;
1348                 $ref_item{'title'} = $title || '(no commit message)';
1349                 $ref_item{'epoch'} = $epoch;
1350                 if ($epoch) {
1351                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1352                 } else {
1353                         $ref_item{'age'} = "unknown";
1354                 }
1355
1356                 push @headslist, \%ref_item;
1357         }
1358         close $fd;
1359
1360         return wantarray ? @headslist : \@headslist;
1361 }
1362
1363 sub git_get_tags_list {
1364         my $limit = shift;
1365         my @tagslist;
1366
1367         open my $fd, '-|', git_cmd(), 'for-each-ref',
1368                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1369                 '--format=%(objectname) %(objecttype) %(refname) '.
1370                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1371                 'refs/tags'
1372                 or return;
1373         while (my $line = <$fd>) {
1374                 my %ref_item;
1375
1376                 chomp $line;
1377                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1378                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1379                 my ($creator, $epoch, $tz) =
1380                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1381                 $name =~ s!^refs/tags/!!;
1382
1383                 $ref_item{'type'} = $type;
1384                 $ref_item{'id'} = $id;
1385                 $ref_item{'name'} = $name;
1386                 if ($type eq "tag") {
1387                         $ref_item{'subject'} = $title;
1388                         $ref_item{'reftype'} = $reftype;
1389                         $ref_item{'refid'}   = $refid;
1390                 } else {
1391                         $ref_item{'reftype'} = $type;
1392                         $ref_item{'refid'}   = $id;
1393                 }
1394
1395                 if ($type eq "tag" || $type eq "commit") {
1396                         $ref_item{'epoch'} = $epoch;
1397                         if ($epoch) {
1398                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1399                         } else {
1400                                 $ref_item{'age'} = "unknown";
1401                         }
1402                 }
1403
1404                 push @tagslist, \%ref_item;
1405         }
1406         close $fd;
1407
1408         return wantarray ? @tagslist : \@tagslist;
1409 }
1410
1411 ## ----------------------------------------------------------------------
1412 ## filesystem-related functions
1413
1414 sub get_file_owner {
1415         my $path = shift;
1416
1417         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1418         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1419         if (!defined $gcos) {
1420                 return undef;
1421         }
1422         my $owner = $gcos;
1423         $owner =~ s/[,;].*$//;
1424         return to_utf8($owner);
1425 }
1426
1427 ## ......................................................................
1428 ## mimetype related functions
1429
1430 sub mimetype_guess_file {
1431         my $filename = shift;
1432         my $mimemap = shift;
1433         -r $mimemap or return undef;
1434
1435         my %mimemap;
1436         open(MIME, $mimemap) or return undef;
1437         while (<MIME>) {
1438                 next if m/^#/; # skip comments
1439                 my ($mime, $exts) = split(/\t+/);
1440                 if (defined $exts) {
1441                         my @exts = split(/\s+/, $exts);
1442                         foreach my $ext (@exts) {
1443                                 $mimemap{$ext} = $mime;
1444                         }
1445                 }
1446         }
1447         close(MIME);
1448
1449         $filename =~ /\.([^.]*)$/;
1450         return $mimemap{$1};
1451 }
1452
1453 sub mimetype_guess {
1454         my $filename = shift;
1455         my $mime;
1456         $filename =~ /\./ or return undef;
1457
1458         if ($mimetypes_file) {
1459                 my $file = $mimetypes_file;
1460                 if ($file !~ m!^/!) { # if it is relative path
1461                         # it is relative to project
1462                         $file = "$projectroot/$project/$file";
1463                 }
1464                 $mime = mimetype_guess_file($filename, $file);
1465         }
1466         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1467         return $mime;
1468 }
1469
1470 sub blob_mimetype {
1471         my $fd = shift;
1472         my $filename = shift;
1473
1474         if ($filename) {
1475                 my $mime = mimetype_guess($filename);
1476                 $mime and return $mime;
1477         }
1478
1479         # just in case
1480         return $default_blob_plain_mimetype unless $fd;
1481
1482         if (-T $fd) {
1483                 return 'text/plain' .
1484                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1485         } elsif (! $filename) {
1486                 return 'application/octet-stream';
1487         } elsif ($filename =~ m/\.png$/i) {
1488                 return 'image/png';
1489         } elsif ($filename =~ m/\.gif$/i) {
1490                 return 'image/gif';
1491         } elsif ($filename =~ m/\.jpe?g$/i) {
1492                 return 'image/jpeg';
1493         } else {
1494                 return 'application/octet-stream';
1495         }
1496 }
1497
1498 ## ======================================================================
1499 ## functions printing HTML: header, footer, error page
1500
1501 sub git_header_html {
1502         my $status = shift || "200 OK";
1503         my $expires = shift;
1504
1505         my $title = "$site_name";
1506         if (defined $project) {
1507                 $title .= " - $project";
1508                 if (defined $action) {
1509                         $title .= "/$action";
1510                         if (defined $file_name) {
1511                                 $title .= " - " . esc_html($file_name);
1512                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1513                                         $title .= "/";
1514                                 }
1515                         }
1516                 }
1517         }
1518         my $content_type;
1519         # require explicit support from the UA if we are to send the page as
1520         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1521         # we have to do this because MSIE sometimes globs '*/*', pretending to
1522         # support xhtml+xml but choking when it gets what it asked for.
1523         if (defined $cgi->http('HTTP_ACCEPT') &&
1524             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1525             $cgi->Accept('application/xhtml+xml') != 0) {
1526                 $content_type = 'application/xhtml+xml';
1527         } else {
1528                 $content_type = 'text/html';
1529         }
1530         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1531                            -status=> $status, -expires => $expires);
1532         print <<EOF;
1533 <?xml version="1.0" encoding="utf-8"?>
1534 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1535 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1536 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1537 <!-- git core binaries version $git_version -->
1538 <head>
1539 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1540 <meta name="generator" content="gitweb/$version git/$git_version"/>
1541 <meta name="robots" content="index, nofollow"/>
1542 <title>$title</title>
1543 EOF
1544 # print out each stylesheet that exist
1545         if (defined $stylesheet) {
1546 #provides backwards capability for those people who define style sheet in a config file
1547                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1548         } else {
1549                 foreach my $stylesheet (@stylesheets) {
1550                         next unless $stylesheet;
1551                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1552                 }
1553         }
1554         if (defined $project) {
1555                 printf('<link rel="alternate" title="%s log" '.
1556                        'href="%s" type="application/rss+xml"/>'."\n",
1557                        esc_param($project), href(action=>"rss"));
1558         } else {
1559                 printf('<link rel="alternate" title="%s projects list" '.
1560                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1561                        $site_name, href(project=>undef, action=>"project_index"));
1562                 printf('<link rel="alternate" title="%s projects logs" '.
1563                        'href="%s" type="text/x-opml"/>'."\n",
1564                        $site_name, href(project=>undef, action=>"opml"));
1565         }
1566         if (defined $favicon) {
1567                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1568         }
1569
1570         print "</head>\n" .
1571               "<body>\n";
1572
1573         if (-f $site_header) {
1574                 open (my $fd, $site_header);
1575                 print <$fd>;
1576                 close $fd;
1577         }
1578
1579         print "<div class=\"page_header\">\n" .
1580               $cgi->a({-href => esc_url($logo_url),
1581                        -title => $logo_label},
1582                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1583         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1584         if (defined $project) {
1585                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1586                 if (defined $action) {
1587                         print " / $action";
1588                 }
1589                 print "\n";
1590                 if (!defined $searchtext) {
1591                         $searchtext = "";
1592                 }
1593                 my $search_hash;
1594                 if (defined $hash_base) {
1595                         $search_hash = $hash_base;
1596                 } elsif (defined $hash) {
1597                         $search_hash = $hash;
1598                 } else {
1599                         $search_hash = "HEAD";
1600                 }
1601                 $cgi->param("a", "search");
1602                 $cgi->param("h", $search_hash);
1603                 $cgi->param("p", $project);
1604                 print $cgi->startform(-method => "get", -action => $my_uri) .
1605                       "<div class=\"search\">\n" .
1606                       $cgi->hidden(-name => "p") . "\n" .
1607                       $cgi->hidden(-name => "a") . "\n" .
1608                       $cgi->hidden(-name => "h") . "\n" .
1609                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1610                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1611                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1612                       " search:\n",
1613                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1614                       "</div>" .
1615                       $cgi->end_form() . "\n";
1616         }
1617         print "</div>\n";
1618 }
1619
1620 sub git_footer_html {
1621         print "<div class=\"page_footer\">\n";
1622         if (defined $project) {
1623                 my $descr = git_get_project_description($project);
1624                 if (defined $descr) {
1625                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1626                 }
1627                 print $cgi->a({-href => href(action=>"rss"),
1628                               -class => "rss_logo"}, "RSS") . "\n";
1629         } else {
1630                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1631                               -class => "rss_logo"}, "OPML") . " ";
1632                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1633                               -class => "rss_logo"}, "TXT") . "\n";
1634         }
1635         print "</div>\n" ;
1636
1637         if (-f $site_footer) {
1638                 open (my $fd, $site_footer);
1639                 print <$fd>;
1640                 close $fd;
1641         }
1642
1643         print "</body>\n" .
1644               "</html>";
1645 }
1646
1647 sub die_error {
1648         my $status = shift || "403 Forbidden";
1649         my $error = shift || "Malformed query, file missing or permission denied";
1650
1651         git_header_html($status);
1652         print <<EOF;
1653 <div class="page_body">
1654 <br /><br />
1655 $status - $error
1656 <br />
1657 </div>
1658 EOF
1659         git_footer_html();
1660         exit;
1661 }
1662
1663 ## ----------------------------------------------------------------------
1664 ## functions printing or outputting HTML: navigation
1665
1666 sub git_print_page_nav {
1667         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1668         $extra = '' if !defined $extra; # pager or formats
1669
1670         my @navs = qw(summary shortlog log commit commitdiff tree);
1671         if ($suppress) {
1672                 @navs = grep { $_ ne $suppress } @navs;
1673         }
1674
1675         my %arg = map { $_ => {action=>$_} } @navs;
1676         if (defined $head) {
1677                 for (qw(commit commitdiff)) {
1678                         $arg{$_}{hash} = $head;
1679                 }
1680                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1681                         for (qw(shortlog log)) {
1682                                 $arg{$_}{hash} = $head;
1683                         }
1684                 }
1685         }
1686         $arg{tree}{hash} = $treehead if defined $treehead;
1687         $arg{tree}{hash_base} = $treebase if defined $treebase;
1688
1689         print "<div class=\"page_nav\">\n" .
1690                 (join " | ",
1691                  map { $_ eq $current ?
1692                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1693                  } @navs);
1694         print "<br/>\n$extra<br/>\n" .
1695               "</div>\n";
1696 }
1697
1698 sub format_paging_nav {
1699         my ($action, $hash, $head, $page, $nrevs) = @_;
1700         my $paging_nav;
1701
1702
1703         if ($hash ne $head || $page) {
1704                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1705         } else {
1706                 $paging_nav .= "HEAD";
1707         }
1708
1709         if ($page > 0) {
1710                 $paging_nav .= " &sdot; " .
1711                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1712                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1713         } else {
1714                 $paging_nav .= " &sdot; prev";
1715         }
1716
1717         if ($nrevs >= (100 * ($page+1)-1)) {
1718                 $paging_nav .= " &sdot; " .
1719                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1720                                  -accesskey => "n", -title => "Alt-n"}, "next");
1721         } else {
1722                 $paging_nav .= " &sdot; next";
1723         }
1724
1725         return $paging_nav;
1726 }
1727
1728 ## ......................................................................
1729 ## functions printing or outputting HTML: div
1730
1731 sub git_print_header_div {
1732         my ($action, $title, $hash, $hash_base) = @_;
1733         my %args = ();
1734
1735         $args{action} = $action;
1736         $args{hash} = $hash if $hash;
1737         $args{hash_base} = $hash_base if $hash_base;
1738
1739         print "<div class=\"header\">\n" .
1740               $cgi->a({-href => href(%args), -class => "title"},
1741               $title ? $title : $action) .
1742               "\n</div>\n";
1743 }
1744
1745 #sub git_print_authorship (\%) {
1746 sub git_print_authorship {
1747         my $co = shift;
1748
1749         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1750         print "<div class=\"author_date\">" .
1751               esc_html($co->{'author_name'}) .
1752               " [$ad{'rfc2822'}";
1753         if ($ad{'hour_local'} < 6) {
1754                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1755                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1756         } else {
1757                 printf(" (%02d:%02d %s)",
1758                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1759         }
1760         print "]</div>\n";
1761 }
1762
1763 sub git_print_page_path {
1764         my $name = shift;
1765         my $type = shift;
1766         my $hb = shift;
1767
1768
1769         print "<div class=\"page_path\">";
1770         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1771                       -title => 'tree root'}, "[$project]");
1772         print " / ";
1773         if (defined $name) {
1774                 my @dirname = split '/', $name;
1775                 my $basename = pop @dirname;
1776                 my $fullname = '';
1777
1778                 foreach my $dir (@dirname) {
1779                         $fullname .= ($fullname ? '/' : '') . $dir;
1780                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1781                                                      hash_base=>$hb),
1782                                       -title => $fullname}, esc_html($dir));
1783                         print " / ";
1784                 }
1785                 if (defined $type && $type eq 'blob') {
1786                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1787                                                      hash_base=>$hb),
1788                                       -title => $name}, esc_html($basename));
1789                 } elsif (defined $type && $type eq 'tree') {
1790                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1791                                                      hash_base=>$hb),
1792                                       -title => $name}, esc_html($basename));
1793                         print " / ";
1794                 } else {
1795                         print esc_html($basename);
1796                 }
1797         }
1798         print "<br/></div>\n";
1799 }
1800
1801 # sub git_print_log (\@;%) {
1802 sub git_print_log ($;%) {
1803         my $log = shift;
1804         my %opts = @_;
1805
1806         if ($opts{'-remove_title'}) {
1807                 # remove title, i.e. first line of log
1808                 shift @$log;
1809         }
1810         # remove leading empty lines
1811         while (defined $log->[0] && $log->[0] eq "") {
1812                 shift @$log;
1813         }
1814
1815         # print log
1816         my $signoff = 0;
1817         my $empty = 0;
1818         foreach my $line (@$log) {
1819                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1820                         $signoff = 1;
1821                         $empty = 0;
1822                         if (! $opts{'-remove_signoff'}) {
1823                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1824                                 next;
1825                         } else {
1826                                 # remove signoff lines
1827                                 next;
1828                         }
1829                 } else {
1830                         $signoff = 0;
1831                 }
1832
1833                 # print only one empty line
1834                 # do not print empty line after signoff
1835                 if ($line eq "") {
1836                         next if ($empty || $signoff);
1837                         $empty = 1;
1838                 } else {
1839                         $empty = 0;
1840                 }
1841
1842                 print format_log_line_html($line) . "<br/>\n";
1843         }
1844
1845         if ($opts{'-final_empty_line'}) {
1846                 # end with single empty line
1847                 print "<br/>\n" unless $empty;
1848         }
1849 }
1850
1851 # print tree entry (row of git_tree), but without encompassing <tr> element
1852 sub git_print_tree_entry {
1853         my ($t, $basedir, $hash_base, $have_blame) = @_;
1854
1855         my %base_key = ();
1856         $base_key{hash_base} = $hash_base if defined $hash_base;
1857
1858         # The format of a table row is: mode list link.  Where mode is
1859         # the mode of the entry, list is the name of the entry, an href,
1860         # and link is the action links of the entry.
1861
1862         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1863         if ($t->{'type'} eq "blob") {
1864                 print "<td class=\"list\">" .
1865                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1866                                                file_name=>"$basedir$t->{'name'}", %base_key),
1867                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1868                 print "<td class=\"link\">";
1869                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1870                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1871                               "blob");
1872                 if ($have_blame) {
1873                         print " | " .
1874                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1875                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1876                                             "blame");
1877                 }
1878                 if (defined $hash_base) {
1879                         print " | " .
1880                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1881                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1882                                       "history");
1883                 }
1884                 print " | " .
1885                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1886                                                file_name=>"$basedir$t->{'name'}")},
1887                                 "raw");
1888                 print "</td>\n";
1889
1890         } elsif ($t->{'type'} eq "tree") {
1891                 print "<td class=\"list\">";
1892                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1893                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1894                               esc_html($t->{'name'}));
1895                 print "</td>\n";
1896                 print "<td class=\"link\">";
1897                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1898                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1899                               "tree");
1900                 if (defined $hash_base) {
1901                         print " | " .
1902                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1903                                                      file_name=>"$basedir$t->{'name'}")},
1904                                       "history");
1905                 }
1906                 print "</td>\n";
1907         }
1908 }
1909
1910 ## ......................................................................
1911 ## functions printing large fragments of HTML
1912
1913 sub git_difftree_body {
1914         my ($difftree, $hash, $parent) = @_;
1915
1916         print "<div class=\"list_head\">\n";
1917         if ($#{$difftree} > 10) {
1918                 print(($#{$difftree} + 1) . " files changed:\n");
1919         }
1920         print "</div>\n";
1921
1922         print "<table class=\"diff_tree\">\n";
1923         my $alternate = 1;
1924         my $patchno = 0;
1925         foreach my $line (@{$difftree}) {
1926                 my %diff = parse_difftree_raw_line($line);
1927
1928                 if ($alternate) {
1929                         print "<tr class=\"dark\">\n";
1930                 } else {
1931                         print "<tr class=\"light\">\n";
1932                 }
1933                 $alternate ^= 1;
1934
1935                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1936                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1937                 if ($diff{'to_mode'} ne ('0' x 6)) {
1938                         $to_mode_oct = oct $diff{'to_mode'};
1939                         if (S_ISREG($to_mode_oct)) { # only for regular file
1940                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1941                         }
1942                         $to_file_type = file_type($diff{'to_mode'});
1943                 }
1944                 if ($diff{'from_mode'} ne ('0' x 6)) {
1945                         $from_mode_oct = oct $diff{'from_mode'};
1946                         if (S_ISREG($to_mode_oct)) { # only for regular file
1947                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1948                         }
1949                         $from_file_type = file_type($diff{'from_mode'});
1950                 }
1951
1952                 if ($diff{'status'} eq "A") { # created
1953                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1954                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1955                         $mode_chng   .= "]</span>";
1956                         print "<td>";
1957                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1958                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1959                                       -class => "list"}, esc_html($diff{'file'}));
1960                         print "</td>\n";
1961                         print "<td>$mode_chng</td>\n";
1962                         print "<td class=\"link\">";
1963                         if ($action eq 'commitdiff') {
1964                                 # link to patch
1965                                 $patchno++;
1966                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1967                         }
1968                         print "</td>\n";
1969
1970                 } elsif ($diff{'status'} eq "D") { # deleted
1971                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1972                         print "<td>";
1973                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1974                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1975                                        -class => "list"}, esc_html($diff{'file'}));
1976                         print "</td>\n";
1977                         print "<td>$mode_chng</td>\n";
1978                         print "<td class=\"link\">";
1979                         if ($action eq 'commitdiff') {
1980                                 # link to patch
1981                                 $patchno++;
1982                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1983                                 print " | ";
1984                         }
1985                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1986                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1987                                       "blob") . " | ";
1988                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1989                                                      file_name=>$diff{'file'})},
1990                                       "blame") . " | ";
1991                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1992                                                      file_name=>$diff{'file'})},
1993                                       "history");
1994                         print "</td>\n";
1995
1996                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1997                         my $mode_chnge = "";
1998                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1999                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2000                                 if ($from_file_type != $to_file_type) {
2001                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2002                                 }
2003                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2004                                         if ($from_mode_str && $to_mode_str) {
2005                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2006                                         } elsif ($to_mode_str) {
2007                                                 $mode_chnge .= " mode: $to_mode_str";
2008                                         }
2009                                 }
2010                                 $mode_chnge .= "]</span>\n";
2011                         }
2012                         print "<td>";
2013                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2014                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2015                                       -class => "list"}, esc_html($diff{'file'}));
2016                         print "</td>\n";
2017                         print "<td>$mode_chnge</td>\n";
2018                         print "<td class=\"link\">";
2019                         if ($action eq 'commitdiff') {
2020                                 # link to patch
2021                                 $patchno++;
2022                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2023                                       " | ";
2024                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2025                                 # "commit" view and modified file (not onlu mode changed)
2026                                 print $cgi->a({-href => href(action=>"blobdiff",
2027                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2028                                                              hash_base=>$hash, hash_parent_base=>$parent,
2029                                                              file_name=>$diff{'file'})},
2030                                               "diff") .
2031                                       " | ";
2032                         }
2033                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2034                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2035                                       "blob") . " | ";
2036                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2037                                                      file_name=>$diff{'file'})},
2038                                       "blame") . " | ";
2039                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2040                                                      file_name=>$diff{'file'})},
2041                                       "history");
2042                         print "</td>\n";
2043
2044                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2045                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2046                         my $nstatus = $status_name{$diff{'status'}};
2047                         my $mode_chng = "";
2048                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2049                                 # mode also for directories, so we cannot use $to_mode_str
2050                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2051                         }
2052                         print "<td>" .
2053                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2054                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2055                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
2056                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2057                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2058                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2059                                       -class => "list"}, esc_html($diff{'from_file'})) .
2060                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2061                               "<td class=\"link\">";
2062                         if ($action eq 'commitdiff') {
2063                                 # link to patch
2064                                 $patchno++;
2065                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2066                                       " | ";
2067                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2068                                 # "commit" view and modified file (not only pure rename or copy)
2069                                 print $cgi->a({-href => href(action=>"blobdiff",
2070                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2071                                                              hash_base=>$hash, hash_parent_base=>$parent,
2072                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2073                                               "diff") .
2074                                       " | ";
2075                         }
2076                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2077                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2078                                       "blob") . " | ";
2079                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2080                                                      file_name=>$diff{'from_file'})},
2081                                       "blame") . " | ";
2082                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2083                                                     file_name=>$diff{'from_file'})},
2084                                       "history");
2085                         print "</td>\n";
2086
2087                 } # we should not encounter Unmerged (U) or Unknown (X) status
2088                 print "</tr>\n";
2089         }
2090         print "</table>\n";
2091 }
2092
2093 sub git_patchset_body {
2094         my ($fd, $difftree, $hash, $hash_parent) = @_;
2095
2096         my $patch_idx = 0;
2097         my $in_header = 0;
2098         my $patch_found = 0;
2099         my $diffinfo;
2100
2101         print "<div class=\"patchset\">\n";
2102
2103         LINE:
2104         while (my $patch_line = <$fd>) {
2105                 chomp $patch_line;
2106
2107                 if ($patch_line =~ m/^diff /) { # "git diff" header
2108                         # beginning of patch (in patchset)
2109                         if ($patch_found) {
2110                                 # close previous patch
2111                                 print "</div>\n"; # class="patch"
2112                         } else {
2113                                 # first patch in patchset
2114                                 $patch_found = 1;
2115                         }
2116                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2117
2118                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2119                                 $diffinfo = $difftree->[$patch_idx];
2120                         } else {
2121                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2122                         }
2123                         $patch_idx++;
2124
2125                         if ($diffinfo->{'status'} eq "A") { # added
2126                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2127                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2128                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2129                                               $diffinfo->{'to_id'}) . " (new)" .
2130                                       "</div>\n"; # class="diff_info"
2131
2132                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2133                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2134                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2135                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2136                                               $diffinfo->{'from_id'}) . " (deleted)" .
2137                                       "</div>\n"; # class="diff_info"
2138
2139                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2140                                  $diffinfo->{'status'} eq "C" || # copied
2141                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2142                                 print "<div class=\"diff_info\">" .
2143                                       file_type($diffinfo->{'from_mode'}) . ":" .
2144                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2145                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2146                                               $diffinfo->{'from_id'}) .
2147                                       " -> " .
2148                                       file_type($diffinfo->{'to_mode'}) . ":" .
2149                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2150                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2151                                               $diffinfo->{'to_id'});
2152                                 print "</div>\n"; # class="diff_info"
2153
2154                         } else { # modified, mode changed, ...
2155                                 print "<div class=\"diff_info\">" .
2156                                       file_type($diffinfo->{'from_mode'}) . ":" .
2157                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2158                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2159                                               $diffinfo->{'from_id'}) .
2160                                       " -> " .
2161                                       file_type($diffinfo->{'to_mode'}) . ":" .
2162                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2163                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2164                                               $diffinfo->{'to_id'});
2165                                 print "</div>\n"; # class="diff_info"
2166                         }
2167
2168                         #print "<div class=\"diff extended_header\">\n";
2169                         $in_header = 1;
2170                         next LINE;
2171                 } # start of patch in patchset
2172
2173
2174                 if ($in_header && $patch_line =~ m/^---/) {
2175                         #print "</div>\n"; # class="diff extended_header"
2176                         $in_header = 0;
2177
2178                         my $file = $diffinfo->{'from_file'};
2179                         $file  ||= $diffinfo->{'file'};
2180                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2181                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2182                                         -class => "list"}, esc_html($file));
2183                         $patch_line =~ s|a/.*$|a/$file|g;
2184                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2185
2186                         $patch_line = <$fd>;
2187                         chomp $patch_line;
2188
2189                         #$patch_line =~ m/^+++/;
2190                         $file    = $diffinfo->{'to_file'};
2191                         $file  ||= $diffinfo->{'file'};
2192                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2193                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2194                                         -class => "list"}, esc_html($file));
2195                         $patch_line =~ s|b/.*|b/$file|g;
2196                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2197
2198                         next LINE;
2199                 }
2200                 next LINE if $in_header;
2201
2202                 print format_diff_line($patch_line);
2203         }
2204         print "</div>\n" if $patch_found; # class="patch"
2205
2206         print "</div>\n"; # class="patchset"
2207 }
2208
2209 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2210
2211 sub git_project_list_body {
2212         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2213
2214         my $check_forks = gitweb_check_feature('forks');
2215
2216         my @projects;
2217         foreach my $pr (@$projlist) {
2218                 my (@aa) = git_get_last_activity($pr->{'path'});
2219                 unless (@aa) {
2220                         next;
2221                 }
2222                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2223                 if (!defined $pr->{'descr'}) {
2224                         my $descr = git_get_project_description($pr->{'path'}) || "";
2225                         $pr->{'descr'} = chop_str($descr, 25, 5);
2226                 }
2227                 if (!defined $pr->{'owner'}) {
2228                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2229                 }
2230                 if ($check_forks) {
2231                         my $pname = $pr->{'path'};
2232                         $pname =~ s/\.git$//;
2233                         $pr->{'forks'} = -d "$projectroot/$pname";
2234                 }
2235                 push @projects, $pr;
2236         }
2237
2238         $order ||= "project";
2239         $from = 0 unless defined $from;
2240         $to = $#projects if (!defined $to || $#projects < $to);
2241
2242         print "<table class=\"project_list\">\n";
2243         unless ($no_header) {
2244                 print "<tr>\n";
2245                 if ($check_forks) {
2246                         print "<th></th>\n";
2247                 }
2248                 if ($order eq "project") {
2249                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2250                         print "<th>Project</th>\n";
2251                 } else {
2252                         print "<th>" .
2253                               $cgi->a({-href => href(project=>undef, order=>'project'),
2254                                        -class => "header"}, "Project") .
2255                               "</th>\n";
2256                 }
2257                 if ($order eq "descr") {
2258                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2259                         print "<th>Description</th>\n";
2260                 } else {
2261                         print "<th>" .
2262                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2263                                        -class => "header"}, "Description") .
2264                               "</th>\n";
2265                 }
2266                 if ($order eq "owner") {
2267                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2268                         print "<th>Owner</th>\n";
2269                 } else {
2270                         print "<th>" .
2271                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2272                                        -class => "header"}, "Owner") .
2273                               "</th>\n";
2274                 }
2275                 if ($order eq "age") {
2276                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2277                         print "<th>Last Change</th>\n";
2278                 } else {
2279                         print "<th>" .
2280                               $cgi->a({-href => href(project=>undef, order=>'age'),
2281                                        -class => "header"}, "Last Change") .
2282                               "</th>\n";
2283                 }
2284                 print "<th></th>\n" .
2285                       "</tr>\n";
2286         }
2287         my $alternate = 1;
2288         for (my $i = $from; $i <= $to; $i++) {
2289                 my $pr = $projects[$i];
2290                 if ($alternate) {
2291                         print "<tr class=\"dark\">\n";
2292                 } else {
2293                         print "<tr class=\"light\">\n";
2294                 }
2295                 $alternate ^= 1;
2296                 if ($check_forks) {
2297                         print "<td>";
2298                         if ($pr->{'forks'}) {
2299                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2300                         }
2301                         print "</td>\n";
2302                 }
2303                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2304                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2305                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2306                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2307                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2308                       $pr->{'age_string'} . "</td>\n" .
2309                       "<td class=\"link\">" .
2310                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2311                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2312                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2313                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2314                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2315                       "</td>\n" .
2316                       "</tr>\n";
2317         }
2318         if (defined $extra) {
2319                 print "<tr>\n";
2320                 if ($check_forks) {
2321                         print "<td></td>\n";
2322                 }
2323                 print "<td colspan=\"5\">$extra</td>\n" .
2324                       "</tr>\n";
2325         }
2326         print "</table>\n";
2327 }
2328
2329 sub git_shortlog_body {
2330         # uses global variable $project
2331         my ($revlist, $from, $to, $refs, $extra) = @_;
2332
2333         $from = 0 unless defined $from;
2334         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2335
2336         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2337         my $alternate = 1;
2338         for (my $i = $from; $i <= $to; $i++) {
2339                 my $commit = $revlist->[$i];
2340                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2341                 my $ref = format_ref_marker($refs, $commit);
2342                 my %co = parse_commit($commit);
2343                 if ($alternate) {
2344                         print "<tr class=\"dark\">\n";
2345                 } else {
2346                         print "<tr class=\"light\">\n";
2347                 }
2348                 $alternate ^= 1;
2349                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2350                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2351                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2352                       "<td>";
2353                 print format_subject_html($co{'title'}, $co{'title_short'},
2354                                           href(action=>"commit", hash=>$commit), $ref);
2355                 print "</td>\n" .
2356                       "<td class=\"link\">" .
2357                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2358                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2359                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2360                 if (gitweb_have_snapshot()) {
2361                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2362                 }
2363                 print "</td>\n" .
2364                       "</tr>\n";
2365         }
2366         if (defined $extra) {
2367                 print "<tr>\n" .
2368                       "<td colspan=\"4\">$extra</td>\n" .
2369                       "</tr>\n";
2370         }
2371         print "</table>\n";
2372 }
2373
2374 sub git_history_body {
2375         # Warning: assumes constant type (blob or tree) during history
2376         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2377
2378         $from = 0 unless defined $from;
2379         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2380
2381         print "<table class=\"history\" cellspacing=\"0\">\n";
2382         my $alternate = 1;
2383         for (my $i = $from; $i <= $to; $i++) {
2384                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2385                         next;
2386                 }
2387
2388                 my $commit = $1;
2389                 my %co = parse_commit($commit);
2390                 if (!%co) {
2391                         next;
2392                 }
2393
2394                 my $ref = format_ref_marker($refs, $commit);
2395
2396                 if ($alternate) {
2397                         print "<tr class=\"dark\">\n";
2398                 } else {
2399                         print "<tr class=\"light\">\n";
2400                 }
2401                 $alternate ^= 1;
2402                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2403                       # shortlog uses      chop_str($co{'author_name'}, 10)
2404                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2405                       "<td>";
2406                 # originally git_history used chop_str($co{'title'}, 50)
2407                 print format_subject_html($co{'title'}, $co{'title_short'},
2408                                           href(action=>"commit", hash=>$commit), $ref);
2409                 print "</td>\n" .
2410                       "<td class=\"link\">" .
2411                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2412                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2413
2414                 if ($ftype eq 'blob') {
2415                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2416                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2417                         if (defined $blob_current && defined $blob_parent &&
2418                                         $blob_current ne $blob_parent) {
2419                                 print " | " .
2420                                         $cgi->a({-href => href(action=>"blobdiff",
2421                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2422                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2423                                                                file_name=>$file_name)},
2424                                                 "diff to current");
2425                         }
2426                 }
2427                 print "</td>\n" .
2428                       "</tr>\n";
2429         }
2430         if (defined $extra) {
2431                 print "<tr>\n" .
2432                       "<td colspan=\"4\">$extra</td>\n" .
2433                       "</tr>\n";
2434         }
2435         print "</table>\n";
2436 }
2437
2438 sub git_tags_body {
2439         # uses global variable $project
2440         my ($taglist, $from, $to, $extra) = @_;
2441         $from = 0 unless defined $from;
2442         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2443
2444         print "<table class=\"tags\" cellspacing=\"0\">\n";
2445         my $alternate = 1;
2446         for (my $i = $from; $i <= $to; $i++) {
2447                 my $entry = $taglist->[$i];
2448                 my %tag = %$entry;
2449                 my $comment = $tag{'subject'};
2450                 my $comment_short;
2451                 if (defined $comment) {
2452                         $comment_short = chop_str($comment, 30, 5);
2453                 }
2454                 if ($alternate) {
2455                         print "<tr class=\"dark\">\n";
2456                 } else {
2457                         print "<tr class=\"light\">\n";
2458                 }
2459                 $alternate ^= 1;
2460                 print "<td><i>$tag{'age'}</i></td>\n" .
2461                       "<td>" .
2462                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2463                                -class => "list name"}, esc_html($tag{'name'})) .
2464                       "</td>\n" .
2465                       "<td>";
2466                 if (defined $comment) {
2467                         print format_subject_html($comment, $comment_short,
2468                                                   href(action=>"tag", hash=>$tag{'id'}));
2469                 }
2470                 print "</td>\n" .
2471                       "<td class=\"selflink\">";
2472                 if ($tag{'type'} eq "tag") {
2473                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2474                 } else {
2475                         print "&nbsp;";
2476                 }
2477                 print "</td>\n" .
2478                       "<td class=\"link\">" . " | " .
2479                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2480                 if ($tag{'reftype'} eq "commit") {
2481                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2482                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2483                 } elsif ($tag{'reftype'} eq "blob") {
2484                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2485                 }
2486                 print "</td>\n" .
2487                       "</tr>";
2488         }
2489         if (defined $extra) {
2490                 print "<tr>\n" .
2491                       "<td colspan=\"5\">$extra</td>\n" .
2492                       "</tr>\n";
2493         }
2494         print "</table>\n";
2495 }
2496
2497 sub git_heads_body {
2498         # uses global variable $project
2499         my ($headlist, $head, $from, $to, $extra) = @_;
2500         $from = 0 unless defined $from;
2501         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2502
2503         print "<table class=\"heads\" cellspacing=\"0\">\n";
2504         my $alternate = 1;
2505         for (my $i = $from; $i <= $to; $i++) {
2506                 my $entry = $headlist->[$i];
2507                 my %ref = %$entry;
2508                 my $curr = $ref{'id'} eq $head;
2509                 if ($alternate) {
2510                         print "<tr class=\"dark\">\n";
2511                 } else {
2512                         print "<tr class=\"light\">\n";
2513                 }
2514                 $alternate ^= 1;
2515                 print "<td><i>$ref{'age'}</i></td>\n" .
2516                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2517                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2518                                -class => "list name"},esc_html($ref{'name'})) .
2519                       "</td>\n" .
2520                       "<td class=\"link\">" .
2521                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2522                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2523                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2524                       "</td>\n" .
2525                       "</tr>";
2526         }
2527         if (defined $extra) {
2528                 print "<tr>\n" .
2529                       "<td colspan=\"3\">$extra</td>\n" .
2530                       "</tr>\n";
2531         }
2532         print "</table>\n";
2533 }
2534
2535 ## ======================================================================
2536 ## ======================================================================
2537 ## actions
2538
2539 sub git_project_list {
2540         my $order = $cgi->param('o');
2541         if (defined $order && $order !~ m/project|descr|owner|age/) {
2542                 die_error(undef, "Unknown order parameter");
2543         }
2544
2545         my @list = git_get_projects_list();
2546         if (!@list) {
2547                 die_error(undef, "No projects found");
2548         }
2549
2550         git_header_html();
2551         if (-f $home_text) {
2552                 print "<div class=\"index_include\">\n";
2553                 open (my $fd, $home_text);
2554                 print <$fd>;
2555                 close $fd;
2556                 print "</div>\n";
2557         }
2558         git_project_list_body(\@list, $order);
2559         git_footer_html();
2560 }
2561
2562 sub git_forks {
2563         my $order = $cgi->param('o');
2564         if (defined $order && $order !~ m/project|descr|owner|age/) {
2565                 die_error(undef, "Unknown order parameter");
2566         }
2567
2568         my @list = git_get_projects_list($project);
2569         if (!@list) {
2570                 die_error(undef, "No forks found");
2571         }
2572
2573         git_header_html();
2574         git_print_page_nav('','');
2575         git_print_header_div('summary', "$project forks");
2576         git_project_list_body(\@list, $order);
2577         git_footer_html();
2578 }
2579
2580 sub git_project_index {
2581         my @projects = git_get_projects_list($project);
2582
2583         print $cgi->header(
2584                 -type => 'text/plain',
2585                 -charset => 'utf-8',
2586                 -content_disposition => 'inline; filename="index.aux"');
2587
2588         foreach my $pr (@projects) {
2589                 if (!exists $pr->{'owner'}) {
2590                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2591                 }
2592
2593                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2594                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2595                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2596                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2597                 $path  =~ s/ /\+/g;
2598                 $owner =~ s/ /\+/g;
2599
2600                 print "$path $owner\n";
2601         }
2602 }
2603
2604 sub git_summary {
2605         my $descr = git_get_project_description($project) || "none";
2606         my $head = git_get_head_hash($project);
2607         my %co = parse_commit($head);
2608         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2609
2610         my $owner = git_get_project_owner($project);
2611
2612         my $refs = git_get_references();
2613         my @taglist  = git_get_tags_list(15);
2614         my @headlist = git_get_heads_list(15);
2615         my @forklist;
2616         if (gitweb_check_feature('forks')) {
2617                 @forklist = git_get_projects_list($project);
2618         }
2619
2620         git_header_html();
2621         git_print_page_nav('summary','', $head);
2622
2623         print "<div class=\"title\">&nbsp;</div>\n";
2624         print "<table cellspacing=\"0\">\n" .
2625               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2626               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2627               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2628         # use per project git URL list in $projectroot/$project/cloneurl
2629         # or make project git URL from git base URL and project name
2630         my $url_tag = "URL";
2631         my @url_list = git_get_project_url_list($project);
2632         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2633         foreach my $git_url (@url_list) {
2634                 next unless $git_url;
2635                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2636                 $url_tag = "";
2637         }
2638         print "</table>\n";
2639
2640         if (-s "$projectroot/$project/README.html") {
2641                 if (open my $fd, "$projectroot/$project/README.html") {
2642                         print "<div class=\"title\">readme</div>\n";
2643                         print $_ while (<$fd>);
2644                         close $fd;
2645                 }
2646         }
2647
2648         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2649                 git_get_head_hash($project), "--"
2650                 or die_error(undef, "Open git-rev-list failed");
2651         my @revlist = map { chomp; $_ } <$fd>;
2652         close $fd;
2653         git_print_header_div('shortlog');
2654         git_shortlog_body(\@revlist, 0, 15, $refs,
2655                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2656
2657         if (@taglist) {
2658                 git_print_header_div('tags');
2659                 git_tags_body(\@taglist, 0, 15,
2660                               $cgi->a({-href => href(action=>"tags")}, "..."));
2661         }
2662
2663         if (@headlist) {
2664                 git_print_header_div('heads');
2665                 git_heads_body(\@headlist, $head, 0, 15,
2666                                $cgi->a({-href => href(action=>"heads")}, "..."));
2667         }
2668
2669         if (@forklist) {
2670                 git_print_header_div('forks');
2671                 git_project_list_body(\@forklist, undef, 0, 15,
2672                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2673                                       'noheader');
2674         }
2675
2676         git_footer_html();
2677 }
2678
2679 sub git_tag {
2680         my $head = git_get_head_hash($project);
2681         git_header_html();
2682         git_print_page_nav('','', $head,undef,$head);
2683         my %tag = parse_tag($hash);
2684         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2685         print "<div class=\"title_text\">\n" .
2686               "<table cellspacing=\"0\">\n" .
2687               "<tr>\n" .
2688               "<td>object</td>\n" .
2689               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2690                                $tag{'object'}) . "</td>\n" .
2691               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2692                                               $tag{'type'}) . "</td>\n" .
2693               "</tr>\n";
2694         if (defined($tag{'author'})) {
2695                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2696                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2697                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2698                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2699                         "</td></tr>\n";
2700         }
2701         print "</table>\n\n" .
2702               "</div>\n";
2703         print "<div class=\"page_body\">";
2704         my $comment = $tag{'comment'};
2705         foreach my $line (@$comment) {
2706                 print esc_html($line) . "<br/>\n";
2707         }
2708         print "</div>\n";
2709         git_footer_html();
2710 }
2711
2712 sub git_blame2 {
2713         my $fd;
2714         my $ftype;
2715
2716         my ($have_blame) = gitweb_check_feature('blame');
2717         if (!$have_blame) {
2718                 die_error('403 Permission denied', "Permission denied");
2719         }
2720         die_error('404 Not Found', "File name not defined") if (!$file_name);
2721         $hash_base ||= git_get_head_hash($project);
2722         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2723         my %co = parse_commit($hash_base)
2724                 or die_error(undef, "Reading commit failed");
2725         if (!defined $hash) {
2726                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2727                         or die_error(undef, "Error looking up file");
2728         }
2729         $ftype = git_get_type($hash);
2730         if ($ftype !~ "blob") {
2731                 die_error("400 Bad Request", "Object is not a blob");
2732         }
2733         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2734               $file_name, $hash_base)
2735                 or die_error(undef, "Open git-blame failed");
2736         git_header_html();
2737         my $formats_nav =
2738                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2739                         "blob") .
2740                 " | " .
2741                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2742                         "history") .
2743                 " | " .
2744                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2745                         "HEAD");
2746         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2747         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2748         git_print_page_path($file_name, $ftype, $hash_base);
2749         my @rev_color = (qw(light2 dark2));
2750         my $num_colors = scalar(@rev_color);
2751         my $current_color = 0;
2752         my $last_rev;
2753         print <<HTML;
2754 <div class="page_body">
2755 <table class="blame">
2756 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2757 HTML
2758         my %metainfo = ();
2759         while (1) {
2760                 $_ = <$fd>;
2761                 last unless defined $_;
2762                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2763                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2764                 if (!exists $metainfo{$full_rev}) {
2765                         $metainfo{$full_rev} = {};
2766                 }
2767                 my $meta = $metainfo{$full_rev};
2768                 while (<$fd>) {
2769                         last if (s/^\t//);
2770                         if (/^(\S+) (.*)$/) {
2771                                 $meta->{$1} = $2;
2772                         }
2773                 }
2774                 my $data = $_;
2775                 my $rev = substr($full_rev, 0, 8);
2776                 my $author = $meta->{'author'};
2777                 my %date = parse_date($meta->{'author-time'},
2778                                       $meta->{'author-tz'});
2779                 my $date = $date{'iso-tz'};
2780                 if ($group_size) {
2781                         $current_color = ++$current_color % $num_colors;
2782                 }
2783                 print "<tr class=\"$rev_color[$current_color]\">\n";
2784                 if ($group_size) {
2785                         print "<td class=\"sha1\"";
2786                         print " title=\"". esc_html($author) . ", $date\"";
2787                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2788                         print ">";
2789                         print $cgi->a({-href => href(action=>"commit",
2790                                                      hash=>$full_rev,
2791                                                      file_name=>$file_name)},
2792                                       esc_html($rev));
2793                         print "</td>\n";
2794                 }
2795                 my $blamed = href(action => 'blame',
2796                                   file_name => $meta->{'filename'},
2797                                   hash_base => $full_rev);
2798                 print "<td class=\"linenr\">";
2799                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2800                                 -id => "l$lineno",
2801                                 -class => "linenr" },
2802                               esc_html($lineno));
2803                 print "</td>";
2804                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2805                 print "</tr>\n";
2806         }
2807         print "</table>\n";
2808         print "</div>";
2809         close $fd
2810                 or print "Reading blob failed\n";
2811         git_footer_html();
2812 }
2813
2814 sub git_blame {
2815         my $fd;
2816
2817         my ($have_blame) = gitweb_check_feature('blame');
2818         if (!$have_blame) {
2819                 die_error('403 Permission denied', "Permission denied");
2820         }
2821         die_error('404 Not Found', "File name not defined") if (!$file_name);
2822         $hash_base ||= git_get_head_hash($project);
2823         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2824         my %co = parse_commit($hash_base)
2825                 or die_error(undef, "Reading commit failed");
2826         if (!defined $hash) {
2827                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2828                         or die_error(undef, "Error lookup file");
2829         }
2830         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2831                 or die_error(undef, "Open git-annotate failed");
2832         git_header_html();
2833         my $formats_nav =
2834                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2835                         "blob") .
2836                 " | " .
2837                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2838                         "history") .
2839                 " | " .
2840                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2841                         "HEAD");
2842         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2843         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2844         git_print_page_path($file_name, 'blob', $hash_base);
2845         print "<div class=\"page_body\">\n";
2846         print <<HTML;
2847 <table class="blame">
2848   <tr>
2849     <th>Commit</th>
2850     <th>Age</th>
2851     <th>Author</th>
2852     <th>Line</th>
2853     <th>Data</th>
2854   </tr>
2855 HTML
2856         my @line_class = (qw(light dark));
2857         my $line_class_len = scalar (@line_class);
2858         my $line_class_num = $#line_class;
2859         while (my $line = <$fd>) {
2860                 my $long_rev;
2861                 my $short_rev;
2862                 my $author;
2863                 my $time;
2864                 my $lineno;
2865                 my $data;
2866                 my $age;
2867                 my $age_str;
2868                 my $age_class;
2869
2870                 chomp $line;
2871                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2872
2873                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2874                         $long_rev = $1;
2875                         $author   = $2;
2876                         $time     = $3;
2877                         $lineno   = $4;
2878                         $data     = $5;
2879                 } else {
2880                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2881                         next;
2882                 }
2883                 $short_rev  = substr ($long_rev, 0, 8);
2884                 $age        = time () - $time;
2885                 $age_str    = age_string ($age);
2886                 $age_str    =~ s/ /&nbsp;/g;
2887                 $age_class  = age_class($age);
2888                 $author     = esc_html ($author);
2889                 $author     =~ s/ /&nbsp;/g;
2890
2891                 $data = untabify($data);
2892                 $data = esc_html ($data);
2893
2894                 print <<HTML;
2895   <tr class="$line_class[$line_class_num]">
2896     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2897     <td class="$age_class">$age_str</td>
2898     <td>$author</td>
2899     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2900     <td class="pre">$data</td>
2901   </tr>
2902 HTML
2903         } # while (my $line = <$fd>)
2904         print "</table>\n\n";
2905         close $fd
2906                 or print "Reading blob failed.\n";
2907         print "</div>";
2908         git_footer_html();
2909 }
2910
2911 sub git_tags {
2912         my $head = git_get_head_hash($project);
2913         git_header_html();
2914         git_print_page_nav('','', $head,undef,$head);
2915         git_print_header_div('summary', $project);
2916
2917         my @tagslist = git_get_tags_list();
2918         if (@tagslist) {
2919                 git_tags_body(\@tagslist);
2920         }
2921         git_footer_html();
2922 }
2923
2924 sub git_heads {
2925         my $head = git_get_head_hash($project);
2926         git_header_html();
2927         git_print_page_nav('','', $head,undef,$head);
2928         git_print_header_div('summary', $project);
2929
2930         my @headslist = git_get_heads_list();
2931         if (@headslist) {
2932                 git_heads_body(\@headslist, $head);
2933         }
2934         git_footer_html();
2935 }
2936
2937 sub git_blob_plain {
2938         my $expires;
2939
2940         if (!defined $hash) {
2941                 if (defined $file_name) {
2942                         my $base = $hash_base || git_get_head_hash($project);
2943                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2944                                 or die_error(undef, "Error lookup file");
2945                 } else {
2946                         die_error(undef, "No file name defined");
2947                 }
2948         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2949                 # blobs defined by non-textual hash id's can be cached
2950                 $expires = "+1d";
2951         }
2952
2953         my $type = shift;
2954         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2955                 or die_error(undef, "Couldn't cat $file_name, $hash");
2956
2957         $type ||= blob_mimetype($fd, $file_name);
2958
2959         # save as filename, even when no $file_name is given
2960         my $save_as = "$hash";
2961         if (defined $file_name) {
2962                 $save_as = $file_name;
2963         } elsif ($type =~ m/^text\//) {
2964                 $save_as .= '.txt';
2965         }
2966
2967         print $cgi->header(
2968                 -type => "$type",
2969                 -expires=>$expires,
2970                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2971         undef $/;
2972         binmode STDOUT, ':raw';
2973         print <$fd>;
2974         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2975         $/ = "\n";
2976         close $fd;
2977 }
2978
2979 sub git_blob {
2980         my $expires;
2981
2982         if (!defined $hash) {
2983                 if (defined $file_name) {
2984                         my $base = $hash_base || git_get_head_hash($project);
2985                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2986                                 or die_error(undef, "Error lookup file");
2987                 } else {
2988                         die_error(undef, "No file name defined");
2989                 }
2990         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2991                 # blobs defined by non-textual hash id's can be cached
2992                 $expires = "+1d";
2993         }
2994
2995         my ($have_blame) = gitweb_check_feature('blame');
2996         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2997                 or die_error(undef, "Couldn't cat $file_name, $hash");
2998         my $mimetype = blob_mimetype($fd, $file_name);
2999         if ($mimetype !~ m/^text\//) {
3000                 close $fd;
3001                 return git_blob_plain($mimetype);
3002         }
3003         git_header_html(undef, $expires);
3004         my $formats_nav = '';
3005         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3006                 if (defined $file_name) {
3007                         if ($have_blame) {
3008                                 $formats_nav .=
3009                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3010                                                                hash=>$hash, file_name=>$file_name)},
3011                                                 "blame") .
3012                                         " | ";
3013                         }
3014                         $formats_nav .=
3015                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3016                                                        hash=>$hash, file_name=>$file_name)},
3017                                         "history") .
3018                                 " | " .
3019                                 $cgi->a({-href => href(action=>"blob_plain",
3020                                                        hash=>$hash, file_name=>$file_name)},
3021                                         "raw") .
3022                                 " | " .
3023                                 $cgi->a({-href => href(action=>"blob",
3024                                                        hash_base=>"HEAD", file_name=>$file_name)},
3025                                         "HEAD");
3026                 } else {
3027                         $formats_nav .=
3028                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3029                 }
3030                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3031                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3032         } else {
3033                 print "<div class=\"page_nav\">\n" .
3034                       "<br/><br/></div>\n" .
3035                       "<div class=\"title\">$hash</div>\n";
3036         }
3037         git_print_page_path($file_name, "blob", $hash_base);
3038         print "<div class=\"page_body\">\n";
3039         my $nr;
3040         while (my $line = <$fd>) {
3041                 chomp $line;
3042                 $nr++;
3043                 $line = untabify($line);
3044                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3045                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3046         }
3047         close $fd
3048                 or print "Reading blob failed.\n";
3049         print "</div>";
3050         git_footer_html();
3051 }
3052
3053 sub git_tree {
3054         my $have_snapshot = gitweb_have_snapshot();
3055
3056         if (!defined $hash_base) {
3057                 $hash_base = "HEAD";
3058         }
3059         if (!defined $hash) {
3060                 if (defined $file_name) {
3061                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3062                 } else {
3063                         $hash = $hash_base;
3064                 }
3065         }
3066         $/ = "\0";
3067         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3068                 or die_error(undef, "Open git-ls-tree failed");
3069         my @entries = map { chomp; $_ } <$fd>;
3070         close $fd or die_error(undef, "Reading tree failed");
3071         $/ = "\n";
3072
3073         my $refs = git_get_references();
3074         my $ref = format_ref_marker($refs, $hash_base);
3075         git_header_html();
3076         my $basedir = '';
3077         my ($have_blame) = gitweb_check_feature('blame');
3078         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3079                 my @views_nav = ();
3080                 if (defined $file_name) {
3081                         push @views_nav,
3082                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3083                                                        hash=>$hash, file_name=>$file_name)},
3084                                         "history"),
3085                                 $cgi->a({-href => href(action=>"tree",
3086                                                        hash_base=>"HEAD", file_name=>$file_name)},
3087                                         "HEAD"),
3088                 }
3089                 if ($have_snapshot) {
3090                         # FIXME: Should be available when we have no hash base as well.
3091                         push @views_nav,
3092                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3093                                         "snapshot");
3094                 }
3095                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3096                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3097         } else {
3098                 undef $hash_base;
3099                 print "<div class=\"page_nav\">\n";
3100                 print "<br/><br/></div>\n";
3101                 print "<div class=\"title\">$hash</div>\n";
3102         }
3103         if (defined $file_name) {
3104                 $basedir = $file_name;
3105                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3106                         $basedir .= '/';
3107                 }
3108         }
3109         git_print_page_path($file_name, 'tree', $hash_base);
3110         print "<div class=\"page_body\">\n";
3111         print "<table cellspacing=\"0\">\n";
3112         my $alternate = 1;
3113         # '..' (top directory) link if possible
3114         if (defined $hash_base &&
3115             defined $file_name && $file_name =~ m![^/]+$!) {
3116                 if ($alternate) {
3117                         print "<tr class=\"dark\">\n";
3118                 } else {
3119                         print "<tr class=\"light\">\n";
3120                 }
3121                 $alternate ^= 1;
3122
3123                 my $up = $file_name;
3124                 $up =~ s!/?[^/]+$!!;
3125                 undef $up unless $up;
3126                 # based on git_print_tree_entry
3127                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3128                 print '<td class="list">';
3129                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3130                                              file_name=>$up)},
3131                               "..");
3132                 print "</td>\n";
3133                 print "<td class=\"link\"></td>\n";
3134
3135                 print "</tr>\n";
3136         }
3137         foreach my $line (@entries) {
3138                 my %t = parse_ls_tree_line($line, -z => 1);
3139
3140                 if ($alternate) {
3141                         print "<tr class=\"dark\">\n";
3142                 } else {
3143                         print "<tr class=\"light\">\n";
3144                 }
3145                 $alternate ^= 1;
3146
3147                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3148
3149                 print "</tr>\n";
3150         }
3151         print "</table>\n" .
3152               "</div>";
3153         git_footer_html();
3154 }
3155
3156 sub git_snapshot {
3157         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3158         my $have_snapshot = (defined $ctype && defined $suffix);
3159         if (!$have_snapshot) {
3160                 die_error('403 Permission denied', "Permission denied");
3161         }
3162
3163         if (!defined $hash) {
3164                 $hash = git_get_head_hash($project);
3165         }
3166
3167         my $filename = basename($project) . "-$hash.tar.$suffix";
3168
3169         print $cgi->header(
3170                 -type => 'application/x-tar',
3171                 -content_encoding => $ctype,
3172                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3173                 -status => '200 OK');
3174
3175         my $git = git_cmd_str();
3176         my $name = $project;
3177         $name =~ s/\047/\047\\\047\047/g;
3178         open my $fd, "-|",
3179         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3180                 or die_error(undef, "Execute git-tar-tree failed.");
3181         binmode STDOUT, ':raw';
3182         print <$fd>;
3183         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3184         close $fd;
3185
3186 }
3187
3188 sub git_log {
3189         my $head = git_get_head_hash($project);
3190         if (!defined $hash) {
3191                 $hash = $head;
3192         }
3193         if (!defined $page) {
3194                 $page = 0;
3195         }
3196         my $refs = git_get_references();
3197
3198         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3199         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3200                 or die_error(undef, "Open git-rev-list failed");
3201         my @revlist = map { chomp; $_ } <$fd>;
3202         close $fd;
3203
3204         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3205
3206         git_header_html();
3207         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3208
3209         if (!@revlist) {
3210                 my %co = parse_commit($hash);
3211
3212                 git_print_header_div('summary', $project);
3213                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3214         }
3215         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3216                 my $commit = $revlist[$i];
3217                 my $ref = format_ref_marker($refs, $commit);
3218                 my %co = parse_commit($commit);
3219                 next if !%co;
3220                 my %ad = parse_date($co{'author_epoch'});
3221                 git_print_header_div('commit',
3222                                "<span class=\"age\">$co{'age_string'}</span>" .
3223                                esc_html($co{'title'}) . $ref,
3224                                $commit);
3225                 print "<div class=\"title_text\">\n" .
3226                       "<div class=\"log_link\">\n" .
3227                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3228                       " | " .
3229                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3230                       " | " .
3231                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3232                       "<br/>\n" .
3233                       "</div>\n" .
3234                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3235                       "</div>\n";
3236
3237                 print "<div class=\"log_body\">\n";
3238                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3239                 print "</div>\n";
3240         }
3241         git_footer_html();
3242 }
3243
3244 sub git_commit {
3245         my %co = parse_commit($hash);
3246         if (!%co) {
3247                 die_error(undef, "Unknown commit object");
3248         }
3249         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3250         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3251
3252         my $parent = $co{'parent'};
3253         if (!defined $parent) {
3254                 $parent = "--root";
3255         }
3256         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3257                 @diff_opts, $parent, $hash, "--"
3258                 or die_error(undef, "Open git-diff-tree failed");
3259         my @difftree = map { chomp; $_ } <$fd>;
3260         close $fd or die_error(undef, "Reading git-diff-tree failed");
3261
3262         # non-textual hash id's can be cached
3263         my $expires;
3264         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3265                 $expires = "+1d";
3266         }
3267         my $refs = git_get_references();
3268         my $ref = format_ref_marker($refs, $co{'id'});
3269
3270         my $have_snapshot = gitweb_have_snapshot();
3271
3272         my @views_nav = ();
3273         if (defined $file_name && defined $co{'parent'}) {
3274                 push @views_nav,
3275                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3276                                 "blame");
3277         }
3278         git_header_html(undef, $expires);
3279         git_print_page_nav('commit', '',
3280                            $hash, $co{'tree'}, $hash,
3281                            join (' | ', @views_nav));
3282
3283         if (defined $co{'parent'}) {
3284                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3285         } else {
3286                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3287         }
3288         print "<div class=\"title_text\">\n" .
3289               "<table cellspacing=\"0\">\n";
3290         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3291               "<tr>" .
3292               "<td></td><td> $ad{'rfc2822'}";
3293         if ($ad{'hour_local'} < 6) {
3294                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3295                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3296         } else {
3297                 printf(" (%02d:%02d %s)",
3298                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3299         }
3300         print "</td>" .
3301               "</tr>\n";
3302         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3303         print "<tr><td></td><td> $cd{'rfc2822'}" .
3304               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3305               "</td></tr>\n";
3306         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3307         print "<tr>" .
3308               "<td>tree</td>" .
3309               "<td class=\"sha1\">" .
3310               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3311                        class => "list"}, $co{'tree'}) .
3312               "</td>" .
3313               "<td class=\"link\">" .
3314               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3315                       "tree");
3316         if ($have_snapshot) {
3317                 print " | " .
3318                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3319         }
3320         print "</td>" .
3321               "</tr>\n";
3322         my $parents = $co{'parents'};
3323         foreach my $par (@$parents) {
3324                 print "<tr>" .
3325                       "<td>parent</td>" .
3326                       "<td class=\"sha1\">" .
3327                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3328                                class => "list"}, $par) .
3329                       "</td>" .
3330                       "<td class=\"link\">" .
3331                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3332                       " | " .
3333                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3334                       "</td>" .
3335                       "</tr>\n";
3336         }
3337         print "</table>".
3338               "</div>\n";
3339
3340         print "<div class=\"page_body\">\n";
3341         git_print_log($co{'comment'});
3342         print "</div>\n";
3343
3344         git_difftree_body(\@difftree, $hash, $parent);
3345
3346         git_footer_html();
3347 }
3348
3349 sub git_blobdiff {
3350         my $format = shift || 'html';
3351
3352         my $fd;
3353         my @difftree;
3354         my %diffinfo;
3355         my $expires;
3356
3357         # preparing $fd and %diffinfo for git_patchset_body
3358         # new style URI
3359         if (defined $hash_base && defined $hash_parent_base) {
3360                 if (defined $file_name) {
3361                         # read raw output
3362                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3363                                 $hash_parent_base, $hash_base,
3364                                 "--", $file_name
3365                                 or die_error(undef, "Open git-diff-tree failed");
3366                         @difftree = map { chomp; $_ } <$fd>;
3367                         close $fd
3368                                 or die_error(undef, "Reading git-diff-tree failed");
3369                         @difftree
3370                                 or die_error('404 Not Found', "Blob diff not found");
3371
3372                 } elsif (defined $hash &&
3373                          $hash =~ /[0-9a-fA-F]{40}/) {
3374                         # try to find filename from $hash
3375
3376                         # read filtered raw output
3377                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3378                                 $hash_parent_base, $hash_base, "--"
3379                                 or die_error(undef, "Open git-diff-tree failed");
3380                         @difftree =
3381                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3382                                 # $hash == to_id
3383                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3384                                 map { chomp; $_ } <$fd>;
3385                         close $fd
3386                                 or die_error(undef, "Reading git-diff-tree failed");
3387                         @difftree
3388                                 or die_error('404 Not Found', "Blob diff not found");
3389
3390                 } else {
3391                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3392                 }
3393
3394                 if (@difftree > 1) {
3395                         die_error('404 Not Found', "Ambiguous blob diff specification");
3396                 }
3397
3398                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3399                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3400                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3401
3402                 $hash_parent ||= $diffinfo{'from_id'};
3403                 $hash        ||= $diffinfo{'to_id'};
3404
3405                 # non-textual hash id's can be cached
3406                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3407                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3408                         $expires = '+1d';
3409                 }
3410
3411                 # open patch output
3412                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3413                         '-p', $hash_parent_base, $hash_base,
3414                         "--", $file_name
3415                         or die_error(undef, "Open git-diff-tree failed");
3416         }
3417
3418         # old/legacy style URI
3419         if (!%diffinfo && # if new style URI failed
3420             defined $hash && defined $hash_parent) {
3421                 # fake git-diff-tree raw output
3422                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3423                 $diffinfo{'from_id'} = $hash_parent;
3424                 $diffinfo{'to_id'}   = $hash;
3425                 if (defined $file_name) {
3426                         if (defined $file_parent) {
3427                                 $diffinfo{'status'} = '2';
3428                                 $diffinfo{'from_file'} = $file_parent;
3429                                 $diffinfo{'to_file'}   = $file_name;
3430                         } else { # assume not renamed
3431                                 $diffinfo{'status'} = '1';
3432                                 $diffinfo{'from_file'} = $file_name;
3433                                 $diffinfo{'to_file'}   = $file_name;
3434                         }
3435                 } else { # no filename given
3436                         $diffinfo{'status'} = '2';
3437                         $diffinfo{'from_file'} = $hash_parent;
3438                         $diffinfo{'to_file'}   = $hash;
3439                 }
3440
3441                 # non-textual hash id's can be cached
3442                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3443                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3444                         $expires = '+1d';
3445                 }
3446
3447                 # open patch output
3448                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3449                         $hash_parent, $hash, "--"
3450                         or die_error(undef, "Open git-diff failed");
3451         } else  {
3452                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3453                         unless %diffinfo;
3454         }
3455
3456         # header
3457         if ($format eq 'html') {
3458                 my $formats_nav =
3459                         $cgi->a({-href => href(action=>"blobdiff_plain",
3460                                                hash=>$hash, hash_parent=>$hash_parent,
3461                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3462                                                file_name=>$file_name, file_parent=>$file_parent)},
3463                                 "raw");
3464                 git_header_html(undef, $expires);
3465                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3466                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3467                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3468                 } else {
3469                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3470                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3471                 }
3472                 if (defined $file_name) {
3473                         git_print_page_path($file_name, "blob", $hash_base);
3474                 } else {
3475                         print "<div class=\"page_path\"></div>\n";
3476                 }
3477
3478         } elsif ($format eq 'plain') {
3479                 print $cgi->header(
3480                         -type => 'text/plain',
3481                         -charset => 'utf-8',
3482                         -expires => $expires,
3483                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3484
3485                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3486
3487         } else {
3488                 die_error(undef, "Unknown blobdiff format");
3489         }
3490
3491         # patch
3492         if ($format eq 'html') {
3493                 print "<div class=\"page_body\">\n";
3494
3495                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3496                 close $fd;
3497
3498                 print "</div>\n"; # class="page_body"
3499                 git_footer_html();
3500
3501         } else {
3502                 while (my $line = <$fd>) {
3503                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3504                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3505
3506                         print $line;
3507
3508                         last if $line =~ m!^\+\+\+!;
3509                 }
3510                 local $/ = undef;
3511                 print <$fd>;
3512                 close $fd;
3513         }
3514 }
3515
3516 sub git_blobdiff_plain {
3517         git_blobdiff('plain');
3518 }
3519
3520 sub git_commitdiff {
3521         my $format = shift || 'html';
3522         my %co = parse_commit($hash);
3523         if (!%co) {
3524                 die_error(undef, "Unknown commit object");
3525         }
3526
3527         # we need to prepare $formats_nav before any parameter munging
3528         my $formats_nav;
3529         if ($format eq 'html') {
3530                 $formats_nav =
3531                         $cgi->a({-href => href(action=>"commitdiff_plain",
3532                                                hash=>$hash, hash_parent=>$hash_parent)},
3533                                 "raw");
3534
3535                 if (defined $hash_parent) {
3536                         # commitdiff with two commits given
3537                         my $hash_parent_short = $hash_parent;
3538                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3539                                 $hash_parent_short = substr($hash_parent, 0, 7);
3540                         }
3541                         $formats_nav .=
3542                                 ' (from: ' .
3543                                 $cgi->a({-href => href(action=>"commitdiff",
3544                                                        hash=>$hash_parent)},
3545                                         esc_html($hash_parent_short)) .
3546                                 ')';
3547                 } elsif (!$co{'parent'}) {
3548                         # --root commitdiff
3549                         $formats_nav .= ' (initial)';
3550                 } elsif (scalar @{$co{'parents'}} == 1) {
3551                         # single parent commit
3552                         $formats_nav .=
3553                                 ' (parent: ' .
3554                                 $cgi->a({-href => href(action=>"commitdiff",
3555                                                        hash=>$co{'parent'})},
3556                                         esc_html(substr($co{'parent'}, 0, 7))) .
3557                                 ')';
3558                 } else {
3559                         # merge commit
3560                         $formats_nav .=
3561                                 ' (merge: ' .
3562                                 join(' ', map {
3563                                         $cgi->a({-href => href(action=>"commitdiff",
3564                                                                hash=>$_)},
3565                                                 esc_html(substr($_, 0, 7)));
3566                                 } @{$co{'parents'}} ) .
3567                                 ')';
3568                 }
3569         }
3570
3571         if (!defined $hash_parent) {
3572                 $hash_parent = $co{'parent'} || '--root';
3573         }
3574
3575         # read commitdiff
3576         my $fd;
3577         my @difftree;
3578         if ($format eq 'html') {
3579                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3580                         "--no-commit-id", "--patch-with-raw", "--full-index",
3581                         $hash_parent, $hash, "--"
3582                         or die_error(undef, "Open git-diff-tree failed");
3583
3584                 while (chomp(my $line = <$fd>)) {
3585                         # empty line ends raw part of diff-tree output
3586                         last unless $line;
3587                         push @difftree, $line;
3588                 }
3589
3590         } elsif ($format eq 'plain') {
3591                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3592                         '-p', $hash_parent, $hash, "--"
3593                         or die_error(undef, "Open git-diff-tree failed");
3594
3595         } else {
3596                 die_error(undef, "Unknown commitdiff format");
3597         }
3598
3599         # non-textual hash id's can be cached
3600         my $expires;
3601         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3602                 $expires = "+1d";
3603         }
3604
3605         # write commit message
3606         if ($format eq 'html') {
3607                 my $refs = git_get_references();
3608                 my $ref = format_ref_marker($refs, $co{'id'});
3609
3610                 git_header_html(undef, $expires);
3611                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3612                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3613                 git_print_authorship(\%co);
3614                 print "<div class=\"page_body\">\n";
3615                 if (@{$co{'comment'}} > 1) {
3616                         print "<div class=\"log\">\n";
3617                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3618                         print "</div>\n"; # class="log"
3619                 }
3620
3621         } elsif ($format eq 'plain') {
3622                 my $refs = git_get_references("tags");
3623                 my $tagname = git_get_rev_name_tags($hash);
3624                 my $filename = basename($project) . "-$hash.patch";
3625
3626                 print $cgi->header(
3627                         -type => 'text/plain',
3628                         -charset => 'utf-8',
3629                         -expires => $expires,
3630                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3631                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3632                 print <<TEXT;
3633 From: $co{'author'}
3634 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3635 Subject: $co{'title'}
3636 TEXT
3637                 print "X-Git-Tag: $tagname\n" if $tagname;
3638                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3639
3640                 foreach my $line (@{$co{'comment'}}) {
3641                         print "$line\n";
3642                 }
3643                 print "---\n\n";
3644         }
3645
3646         # write patch
3647         if ($format eq 'html') {
3648                 git_difftree_body(\@difftree, $hash, $hash_parent);
3649                 print "<br/>\n";
3650
3651                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3652                 close $fd;
3653                 print "</div>\n"; # class="page_body"
3654                 git_footer_html();
3655
3656         } elsif ($format eq 'plain') {
3657                 local $/ = undef;
3658                 print <$fd>;
3659                 close $fd
3660                         or print "Reading git-diff-tree failed\n";
3661         }
3662 }
3663
3664 sub git_commitdiff_plain {
3665         git_commitdiff('plain');
3666 }
3667
3668 sub git_history {
3669         if (!defined $hash_base) {
3670                 $hash_base = git_get_head_hash($project);
3671         }
3672         if (!defined $page) {
3673                 $page = 0;
3674         }
3675         my $ftype;
3676         my %co = parse_commit($hash_base);
3677         if (!%co) {
3678                 die_error(undef, "Unknown commit object");
3679         }
3680
3681         my $refs = git_get_references();
3682         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3683
3684         if (!defined $hash && defined $file_name) {
3685                 $hash = git_get_hash_by_path($hash_base, $file_name);
3686         }
3687         if (defined $hash) {
3688                 $ftype = git_get_type($hash);
3689         }
3690
3691         open my $fd, "-|",
3692                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3693                         or die_error(undef, "Open git-rev-list-failed");
3694         my @revlist = map { chomp; $_ } <$fd>;
3695         close $fd
3696                 or die_error(undef, "Reading git-rev-list failed");
3697
3698         my $paging_nav = '';
3699         if ($page > 0) {
3700                 $paging_nav .=
3701                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3702                                                file_name=>$file_name)},
3703                                 "first");
3704                 $paging_nav .= " &sdot; " .
3705                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3706                                                file_name=>$file_name, page=>$page-1),
3707                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3708         } else {
3709                 $paging_nav .= "first";
3710                 $paging_nav .= " &sdot; prev";
3711         }
3712         if ($#revlist >= (100 * ($page+1)-1)) {
3713                 $paging_nav .= " &sdot; " .
3714                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3715                                                file_name=>$file_name, page=>$page+1),
3716                                  -accesskey => "n", -title => "Alt-n"}, "next");
3717         } else {
3718                 $paging_nav .= " &sdot; next";
3719         }
3720         my $next_link = '';
3721         if ($#revlist >= (100 * ($page+1)-1)) {
3722                 $next_link =
3723                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3724                                                file_name=>$file_name, page=>$page+1),
3725                                  -title => "Alt-n"}, "next");
3726         }
3727
3728         git_header_html();
3729         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3730         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3731         git_print_page_path($file_name, $ftype, $hash_base);
3732
3733         git_history_body(\@revlist, ($page * 100), $#revlist,
3734                          $refs, $hash_base, $ftype, $next_link);
3735
3736         git_footer_html();
3737 }
3738
3739 sub git_search {
3740         if (!defined $searchtext) {
3741                 die_error(undef, "Text field empty");
3742         }
3743         if (!defined $hash) {
3744                 $hash = git_get_head_hash($project);
3745         }
3746         my %co = parse_commit($hash);
3747         if (!%co) {
3748                 die_error(undef, "Unknown commit object");
3749         }
3750
3751         $searchtype ||= 'commit';
3752         if ($searchtype eq 'pickaxe') {
3753                 # pickaxe may take all resources of your box and run for several minutes
3754                 # with every query - so decide by yourself how public you make this feature
3755                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3756                 if (!$have_pickaxe) {
3757                         die_error('403 Permission denied', "Permission denied");
3758                 }
3759         }
3760
3761         git_header_html();
3762         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3763         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3764
3765         print "<table cellspacing=\"0\">\n";
3766         my $alternate = 1;
3767         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3768                 $/ = "\0";
3769                 open my $fd, "-|", git_cmd(), "rev-list",
3770                         "--header", "--parents", $hash, "--"
3771                         or next;
3772                 while (my $commit_text = <$fd>) {
3773                         if (!grep m/$searchtext/i, $commit_text) {
3774                                 next;
3775                         }
3776                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3777                                 next;
3778                         }
3779                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3780                                 next;
3781                         }
3782                         my @commit_lines = split "\n", $commit_text;
3783                         my %co = parse_commit(undef, \@commit_lines);
3784                         if (!%co) {
3785                                 next;
3786                         }
3787                         if ($alternate) {
3788                                 print "<tr class=\"dark\">\n";
3789                         } else {
3790                                 print "<tr class=\"light\">\n";
3791                         }
3792                         $alternate ^= 1;
3793                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3794                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3795                               "<td>" .
3796                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3797                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3798                         my $comment = $co{'comment'};
3799                         foreach my $line (@$comment) {
3800                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3801                                         my $lead = esc_html($1) || "";
3802                                         $lead = chop_str($lead, 30, 10);
3803                                         my $match = esc_html($2) || "";
3804                                         my $trail = esc_html($3) || "";
3805                                         $trail = chop_str($trail, 30, 10);
3806                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3807                                         print chop_str($text, 80, 5) . "<br/>\n";
3808                                 }
3809                         }
3810                         print "</td>\n" .
3811                               "<td class=\"link\">" .
3812                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3813                               " | " .
3814                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3815                         print "</td>\n" .
3816                               "</tr>\n";
3817                 }
3818                 close $fd;
3819         }
3820
3821         if ($searchtype eq 'pickaxe') {
3822                 $/ = "\n";
3823                 my $git_command = git_cmd_str();
3824                 open my $fd, "-|", "$git_command rev-list $hash | " .
3825                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3826                 undef %co;
3827                 my @files;
3828                 while (my $line = <$fd>) {
3829                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3830                                 my %set;
3831                                 $set{'file'} = $6;
3832                                 $set{'from_id'} = $3;
3833                                 $set{'to_id'} = $4;
3834                                 $set{'id'} = $set{'to_id'};
3835                                 if ($set{'id'} =~ m/0{40}/) {
3836                                         $set{'id'} = $set{'from_id'};
3837                                 }
3838                                 if ($set{'id'} =~ m/0{40}/) {
3839                                         next;
3840                                 }
3841                                 push @files, \%set;
3842                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3843                                 if (%co) {
3844                                         if ($alternate) {
3845                                                 print "<tr class=\"dark\">\n";
3846                                         } else {
3847                                                 print "<tr class=\"light\">\n";
3848                                         }
3849                                         $alternate ^= 1;
3850                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3851                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3852                                               "<td>" .
3853                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3854                                                       -class => "list subject"},
3855                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3856                                         while (my $setref = shift @files) {
3857                                                 my %set = %$setref;
3858                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3859                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3860                                                               -class => "list"},
3861                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3862                                                       "<br/>\n";
3863                                         }
3864                                         print "</td>\n" .
3865                                               "<td class=\"link\">" .
3866                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3867                                               " | " .
3868                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3869                                         print "</td>\n" .
3870                                               "</tr>\n";
3871                                 }
3872                                 %co = parse_commit($1);
3873                         }
3874                 }
3875                 close $fd;
3876         }
3877         print "</table>\n";
3878         git_footer_html();
3879 }
3880
3881 sub git_search_help {
3882         git_header_html();
3883         git_print_page_nav('','', $hash,$hash,$hash);
3884         print <<EOT;
3885 <dl>
3886 <dt><b>commit</b></dt>
3887 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3888 <dt><b>author</b></dt>
3889 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3890 <dt><b>committer</b></dt>
3891 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3892 EOT
3893         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3894         if ($have_pickaxe) {
3895                 print <<EOT;
3896 <dt><b>pickaxe</b></dt>
3897 <dd>All commits that caused the string to appear or disappear from any file (changes that
3898 added, removed or "modified" the string) will be listed. This search can take a while and
3899 takes a lot of strain on the server, so please use it wisely.</dd>
3900 EOT
3901         }
3902         print "</dl>\n";
3903         git_footer_html();
3904 }
3905
3906 sub git_shortlog {
3907         my $head = git_get_head_hash($project);
3908         if (!defined $hash) {
3909                 $hash = $head;
3910         }
3911         if (!defined $page) {
3912                 $page = 0;
3913         }
3914         my $refs = git_get_references();
3915
3916         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3917         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3918                 or die_error(undef, "Open git-rev-list failed");
3919         my @revlist = map { chomp; $_ } <$fd>;
3920         close $fd;
3921
3922         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3923         my $next_link = '';
3924         if ($#revlist >= (100 * ($page+1)-1)) {
3925                 $next_link =
3926                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3927                                  -title => "Alt-n"}, "next");
3928         }
3929
3930
3931         git_header_html();
3932         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3933         git_print_header_div('summary', $project);
3934
3935         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3936
3937         git_footer_html();
3938 }
3939
3940 ## ......................................................................
3941 ## feeds (RSS, OPML)
3942
3943 sub git_rss {
3944         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3945         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
3946                 git_get_head_hash($project), "--"
3947                 or die_error(undef, "Open git-rev-list failed");
3948         my @revlist = map { chomp; $_ } <$fd>;
3949         close $fd or die_error(undef, "Reading git-rev-list failed");
3950         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3951         print <<XML;
3952 <?xml version="1.0" encoding="utf-8"?>
3953 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3954 <channel>
3955 <title>$project $my_uri $my_url</title>
3956 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3957 <description>$project log</description>
3958 <language>en</language>
3959 XML
3960
3961         for (my $i = 0; $i <= $#revlist; $i++) {
3962                 my $commit = $revlist[$i];
3963                 my %co = parse_commit($commit);
3964                 # we read 150, we always show 30 and the ones more recent than 48 hours
3965                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3966                         last;
3967                 }
3968                 my %cd = parse_date($co{'committer_epoch'});
3969                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3970                         $co{'parent'}, $co{'id'}, "--"
3971                         or next;
3972                 my @difftree = map { chomp; $_ } <$fd>;
3973                 close $fd
3974                         or next;
3975                 print "<item>\n" .
3976                       "<title>" .
3977                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3978                       "</title>\n" .
3979                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3980                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3981                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3982                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3983                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3984                       "<content:encoded>" .
3985                       "<![CDATA[\n";
3986                 my $comment = $co{'comment'};
3987                 foreach my $line (@$comment) {
3988                         $line = to_utf8($line);
3989                         print "$line<br/>\n";
3990                 }
3991                 print "<br/>\n";
3992                 foreach my $line (@difftree) {
3993                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3994                                 next;
3995                         }
3996                         my $file = esc_html(unquote($7));
3997                         $file = to_utf8($file);
3998                         print "$file<br/>\n";
3999                 }
4000                 print "]]>\n" .
4001                       "</content:encoded>\n" .
4002                       "</item>\n";
4003         }
4004         print "</channel></rss>";
4005 }
4006
4007 sub git_opml {
4008         my @list = git_get_projects_list();
4009
4010         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4011         print <<XML;
4012 <?xml version="1.0" encoding="utf-8"?>
4013 <opml version="1.0">
4014 <head>
4015   <title>$site_name OPML Export</title>
4016 </head>
4017 <body>
4018 <outline text="git RSS feeds">
4019 XML
4020
4021         foreach my $pr (@list) {
4022                 my %proj = %$pr;
4023                 my $head = git_get_head_hash($proj{'path'});
4024                 if (!defined $head) {
4025                         next;
4026                 }
4027                 $git_dir = "$projectroot/$proj{'path'}";
4028                 my %co = parse_commit($head);
4029                 if (!%co) {
4030                         next;
4031                 }
4032
4033                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4034                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4035                 my $html = "$my_url?p=$proj{'path'};a=summary";
4036                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4037         }
4038         print <<XML;
4039 </outline>
4040 </body>
4041 </opml>
4042 XML
4043 }