gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 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 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'blame'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable the pickaxe search, which will list the commits that modified
 132         # a given string in a file. This can be practical and quite faster
 133         # alternative to 'blame', but still potentially CPU-intensive.
 134
 135         # To enable system wide have in $GITWEB_CONFIG
 136         # $feature{'pickaxe'}{'default'} = [1];
 137         # To have project specific config enable override in $GITWEB_CONFIG
 138         # $feature{'pickaxe'}{'override'} = 1;
 139         # and in project config gitweb.pickaxe = 0|1;
 140         'pickaxe' => {
 141                 'sub' => \&feature_pickaxe,
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Make gitweb use an alternative format of the URLs which can be
 146         # more readable and natural-looking: project name is embedded
 147         # directly in the path and the query string contains other
 148         # auxiliary information. All gitweb installations recognize
 149         # URL in either format; this configures in which formats gitweb
 150         # generates links.
 151
 152         # To enable system wide have in $GITWEB_CONFIG
 153         # $feature{'pathinfo'}{'default'} = [1];
 154         # Project specific override is not supported.
 155
 156         # Note that you will need to change the default location of CSS,
 157         # favicon, logo and possibly other files to an absolute URL. Also,
 158         # if gitweb.cgi serves as your indexfile, you will need to force
 159         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 160         'pathinfo' => {
 161                 'override' => 0,
 162                 'default' => [0]},
 163
 164         # Make gitweb consider projects in project root subdirectories
 165         # to be forks of existing projects. Given project $projname.git,
 166         # projects matching $projname/*.git will not be shown in the main
 167         # projects list, instead a '+' mark will be added to $projname
 168         # there and a 'forks' view will be enabled for the project, listing
 169         # all the forks. This feature is supported only if project list
 170         # is taken from a directory, not file.
 171
 172         # To enable system wide have in $GITWEB_CONFIG
 173         # $feature{'forks'}{'default'} = [1];
 174         # Project specific override is not supported.
 175         'forks' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178 );
 179
 180 sub gitweb_check_feature {
 181         my ($name) = @_;
 182         return unless exists $feature{$name};
 183         my ($sub, $override, @defaults) = (
 184                 $feature{$name}{'sub'},
 185                 $feature{$name}{'override'},
 186                 @{$feature{$name}{'default'}});
 187         if (!$override) { return @defaults; }
 188         if (!defined $sub) {
 189                 warn "feature $name is not overrideable";
 190                 return @defaults;
 191         }
 192         return $sub->(@defaults);
 193 }
 194
 195 sub feature_blame {
 196         my ($val) = git_get_project_config('blame', '--bool');
 197
 198         if ($val eq 'true') {
 199                 return 1;
 200         } elsif ($val eq 'false') {
 201                 return 0;
 202         }
 203
 204         return $_[0];
 205 }
 206
 207 sub feature_snapshot {
 208         my ($ctype, $suffix, $command) = @_;
 209
 210         my ($val) = git_get_project_config('snapshot');
 211
 212         if ($val eq 'gzip') {
 213                 return ('x-gzip', 'gz', 'gzip');
 214         } elsif ($val eq 'bzip2') {
 215                 return ('x-bzip2', 'bz2', 'bzip2');
 216         } elsif ($val eq 'none') {
 217                 return ();
 218         }
 219
 220         return ($ctype, $suffix, $command);
 221 }
 222
 223 sub gitweb_have_snapshot {
 224         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 225         my $have_snapshot = (defined $ctype && defined $suffix);
 226
 227         return $have_snapshot;
 228 }
 229
 230 sub feature_pickaxe {
 231         my ($val) = git_get_project_config('pickaxe', '--bool');
 232
 233         if ($val eq 'true') {
 234                 return (1);
 235         } elsif ($val eq 'false') {
 236                 return (0);
 237         }
 238
 239         return ($_[0]);
 240 }
 241
 242 # checking HEAD file with -e is fragile if the repository was
 243 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 244 # and then pruned.
 245 sub check_head_link {
 246         my ($dir) = @_;
 247         my $headfile = "$dir/HEAD";
 248         return ((-e $headfile) ||
 249                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 250 }
 251
 252 sub check_export_ok {
 253         my ($dir) = @_;
 254         return (check_head_link($dir) &&
 255                 (!$export_ok || -e "$dir/$export_ok"));
 256 }
 257
 258 # rename detection options for git-diff and git-diff-tree
 259 # - default is '-M', with the cost proportional to
 260 #   (number of removed files) * (number of new files).
 261 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 262 #   (number of changed files + number of removed files) * (number of new files)
 263 # - even more costly is '-C', '--find-copies-harder' with cost
 264 #   (number of files in the original tree) * (number of new files)
 265 # - one might want to include '-B' option, e.g. '-B', '-M'
 266 our @diff_opts = ('-M'); # taken from git_commit
 267
 268 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 269 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 270
 271 # version of the core git binary
 272 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 273
 274 $projects_list ||= $projectroot;
 275
 276 # ======================================================================
 277 # input validation and dispatch
 278 our $action = $cgi->param('a');
 279 if (defined $action) {
 280         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 281                 die_error(undef, "Invalid action parameter");
 282         }
 283 }
 284
 285 # parameters which are pathnames
 286 our $project = $cgi->param('p');
 287 if (defined $project) {
 288         if (!validate_pathname($project) ||
 289             !(-d "$projectroot/$project") ||
 290             !check_head_link("$projectroot/$project") ||
 291             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 292             ($strict_export && !project_in_list($project))) {
 293                 undef $project;
 294                 die_error(undef, "No such project");
 295         }
 296 }
 297
 298 our $file_name = $cgi->param('f');
 299 if (defined $file_name) {
 300         if (!validate_pathname($file_name)) {
 301                 die_error(undef, "Invalid file parameter");
 302         }
 303 }
 304
 305 our $file_parent = $cgi->param('fp');
 306 if (defined $file_parent) {
 307         if (!validate_pathname($file_parent)) {
 308                 die_error(undef, "Invalid file parent parameter");
 309         }
 310 }
 311
 312 # parameters which are refnames
 313 our $hash = $cgi->param('h');
 314 if (defined $hash) {
 315         if (!validate_refname($hash)) {
 316                 die_error(undef, "Invalid hash parameter");
 317         }
 318 }
 319
 320 our $hash_parent = $cgi->param('hp');
 321 if (defined $hash_parent) {
 322         if (!validate_refname($hash_parent)) {
 323                 die_error(undef, "Invalid hash parent parameter");
 324         }
 325 }
 326
 327 our $hash_base = $cgi->param('hb');
 328 if (defined $hash_base) {
 329         if (!validate_refname($hash_base)) {
 330                 die_error(undef, "Invalid hash base parameter");
 331         }
 332 }
 333
 334 our $hash_parent_base = $cgi->param('hpb');
 335 if (defined $hash_parent_base) {
 336         if (!validate_refname($hash_parent_base)) {
 337                 die_error(undef, "Invalid hash parent base parameter");
 338         }
 339 }
 340
 341 # other parameters
 342 our $page = $cgi->param('pg');
 343 if (defined $page) {
 344         if ($page =~ m/[^0-9]/) {
 345                 die_error(undef, "Invalid page parameter");
 346         }
 347 }
 348
 349 our $searchtext = $cgi->param('s');
 350 if (defined $searchtext) {
 351         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 352                 die_error(undef, "Invalid search parameter");
 353         }
 354         $searchtext = quotemeta $searchtext;
 355 }
 356
 357 our $searchtype = $cgi->param('st');
 358 if (defined $searchtype) {
 359         if ($searchtype =~ m/[^a-z]/) {
 360                 die_error(undef, "Invalid searchtype parameter");
 361         }
 362 }
 363
 364 # now read PATH_INFO and use it as alternative to parameters
 365 sub evaluate_path_info {
 366         return if defined $project;
 367         my $path_info = $ENV{"PATH_INFO"};
 368         return if !$path_info;
 369         $path_info =~ s,^/+,,;
 370         return if !$path_info;
 371         # find which part of PATH_INFO is project
 372         $project = $path_info;
 373         $project =~ s,/+$,,;
 374         while ($project && !check_head_link("$projectroot/$project")) {
 375                 $project =~ s,/*[^/]*$,,;
 376         }
 377         # validate project
 378         $project = validate_pathname($project);
 379         if (!$project ||
 380             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 381             ($strict_export && !project_in_list($project))) {
 382                 undef $project;
 383                 return;
 384         }
 385         # do not change any parameters if an action is given using the query string
 386         return if $action;
 387         $path_info =~ s,^$project/*,,;
 388         my ($refname, $pathname) = split(/:/, $path_info, 2);
 389         if (defined $pathname) {
 390                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 391                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 392                 $pathname =~ s,^/+,,;
 393                 if (!$pathname || substr($pathname, -1) eq "/") {
 394                         $action  ||= "tree";
 395                         $pathname =~ s,/$,,;
 396                 } else {
 397                         $action  ||= "blob_plain";
 398                 }
 399                 $hash_base ||= validate_refname($refname);
 400                 $file_name ||= validate_pathname($pathname);
 401         } elsif (defined $refname) {
 402                 # we got "project.git/branch"
 403                 $action ||= "shortlog";
 404                 $hash   ||= validate_refname($refname);
 405         }
 406 }
 407 evaluate_path_info();
 408
 409 # path to the current git repository
 410 our $git_dir;
 411 $git_dir = "$projectroot/$project" if $project;
 412
 413 # dispatch
 414 my %actions = (
 415         "blame" => \&git_blame2,
 416         "blobdiff" => \&git_blobdiff,
 417         "blobdiff_plain" => \&git_blobdiff_plain,
 418         "blob" => \&git_blob,
 419         "blob_plain" => \&git_blob_plain,
 420         "commitdiff" => \&git_commitdiff,
 421         "commitdiff_plain" => \&git_commitdiff_plain,
 422         "commit" => \&git_commit,
 423         "forks" => \&git_forks,
 424         "heads" => \&git_heads,
 425         "history" => \&git_history,
 426         "log" => \&git_log,
 427         "rss" => \&git_rss,
 428         "search" => \&git_search,
 429         "search_help" => \&git_search_help,
 430         "shortlog" => \&git_shortlog,
 431         "summary" => \&git_summary,
 432         "tag" => \&git_tag,
 433         "tags" => \&git_tags,
 434         "tree" => \&git_tree,
 435         "snapshot" => \&git_snapshot,
 436         # those below don't need $project
 437         "opml" => \&git_opml,
 438         "project_list" => \&git_project_list,
 439         "project_index" => \&git_project_index,
 440 );
 441
 442 if (defined $project) {
 443         $action ||= 'summary';
 444 } else {
 445         $action ||= 'project_list';
 446 }
 447 if (!defined($actions{$action})) {
 448         die_error(undef, "Unknown action");
 449 }
 450 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 451     !$project) {
 452         die_error(undef, "Project needed");
 453 }
 454 $actions{$action}->();
 455 exit;
 456
 457 ## ======================================================================
 458 ## action links
 459
 460 sub href(%) {
 461         my %params = @_;
 462         my $href = $my_uri;
 463
 464         # XXX: Warning: If you touch this, check the search form for updating,
 465         # too.
 466
 467         my @mapping = (
 468                 project => "p",
 469                 action => "a",
 470                 file_name => "f",
 471                 file_parent => "fp",
 472                 hash => "h",
 473                 hash_parent => "hp",
 474                 hash_base => "hb",
 475                 hash_parent_base => "hpb",
 476                 page => "pg",
 477                 order => "o",
 478                 searchtext => "s",
 479                 searchtype => "st",
 480         );
 481         my %mapping = @mapping;
 482
 483         $params{'project'} = $project unless exists $params{'project'};
 484
 485         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 486         if ($use_pathinfo) {
 487                 # use PATH_INFO for project name
 488                 $href .= "/$params{'project'}" if defined $params{'project'};
 489                 delete $params{'project'};
 490
 491                 # Summary just uses the project path URL
 492                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 493                         delete $params{'action'};
 494                 }
 495         }
 496
 497         # now encode the parameters explicitly
 498         my @result = ();
 499         for (my $i = 0; $i < @mapping; $i += 2) {
 500                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 501                 if (defined $params{$name}) {
 502                         push @result, $symbol . "=" . esc_param($params{$name});
 503                 }
 504         }
 505         $href .= "?" . join(';', @result) if scalar @result;
 506
 507         return $href;
 508 }
 509
 510
 511 ## ======================================================================
 512 ## validation, quoting/unquoting and escaping
 513
 514 sub validate_pathname {
 515         my $input = shift || return undef;
 516
 517         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 518         # at the beginning, at the end, and between slashes.
 519         # also this catches doubled slashes
 520         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 521                 return undef;
 522         }
 523         # no null characters
 524         if ($input =~ m!\0!) {
 525                 return undef;
 526         }
 527         return $input;
 528 }
 529
 530 sub validate_refname {
 531         my $input = shift || return undef;
 532
 533         # textual hashes are O.K.
 534         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 535                 return $input;
 536         }
 537         # it must be correct pathname
 538         $input = validate_pathname($input)
 539                 or return undef;
 540         # restrictions on ref name according to git-check-ref-format
 541         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 542                 return undef;
 543         }
 544         return $input;
 545 }
 546
 547 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 548 sub to_utf8 {
 549         my $str = shift;
 550         return decode("utf8", $str, Encode::FB_DEFAULT);
 551 }
 552
 553 # quote unsafe chars, but keep the slash, even when it's not
 554 # correct, but quoted slashes look too horrible in bookmarks
 555 sub esc_param {
 556         my $str = shift;
 557         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 558         $str =~ s/\+/%2B/g;
 559         $str =~ s/ /\+/g;
 560         return $str;
 561 }
 562
 563 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 564 sub esc_url {
 565         my $str = shift;
 566         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 567         $str =~ s/\+/%2B/g;
 568         $str =~ s/ /\+/g;
 569         return $str;
 570 }
 571
 572 # replace invalid utf8 character with SUBSTITUTION sequence
 573 sub esc_html ($;%) {
 574         my $str = shift;
 575         my %opts = @_;
 576
 577         $str = to_utf8($str);
 578         $str = escapeHTML($str);
 579         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 580         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 581         if ($opts{'-nbsp'}) {
 582                 $str =~ s/ /&nbsp;/g;
 583         }
 584         return $str;
 585 }
 586
 587 # git may return quoted and escaped filenames
 588 sub unquote {
 589         my $str = shift;
 590         if ($str =~ m/^"(.*)"$/) {
 591                 $str = $1;
 592                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 593         }
 594         return $str;
 595 }
 596
 597 # escape tabs (convert tabs to spaces)
 598 sub untabify {
 599         my $line = shift;
 600
 601         while ((my $pos = index($line, "\t")) != -1) {
 602                 if (my $count = (8 - ($pos % 8))) {
 603                         my $spaces = ' ' x $count;
 604                         $line =~ s/\t/$spaces/;
 605                 }
 606         }
 607
 608         return $line;
 609 }
 610
 611 sub project_in_list {
 612         my $project = shift;
 613         my @list = git_get_projects_list();
 614         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 615 }
 616
 617 ## ----------------------------------------------------------------------
 618 ## HTML aware string manipulation
 619
 620 sub chop_str {
 621         my $str = shift;
 622         my $len = shift;
 623         my $add_len = shift || 10;
 624
 625         # allow only $len chars, but don't cut a word if it would fit in $add_len
 626         # if it doesn't fit, cut it if it's still longer than the dots we would add
 627         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 628         my $body = $1;
 629         my $tail = $2;
 630         if (length($tail) > 4) {
 631                 $tail = " ...";
 632                 $body =~ s/&[^;]*$//; # remove chopped character entities
 633         }
 634         return "$body$tail";
 635 }
 636
 637 ## ----------------------------------------------------------------------
 638 ## functions returning short strings
 639
 640 # CSS class for given age value (in seconds)
 641 sub age_class {
 642         my $age = shift;
 643
 644         if ($age < 60*60*2) {
 645                 return "age0";
 646         } elsif ($age < 60*60*24*2) {
 647                 return "age1";
 648         } else {
 649                 return "age2";
 650         }
 651 }
 652
 653 # convert age in seconds to "nn units ago" string
 654 sub age_string {
 655         my $age = shift;
 656         my $age_str;
 657
 658         if ($age > 60*60*24*365*2) {
 659                 $age_str = (int $age/60/60/24/365);
 660                 $age_str .= " years ago";
 661         } elsif ($age > 60*60*24*(365/12)*2) {
 662                 $age_str = int $age/60/60/24/(365/12);
 663                 $age_str .= " months ago";
 664         } elsif ($age > 60*60*24*7*2) {
 665                 $age_str = int $age/60/60/24/7;
 666                 $age_str .= " weeks ago";
 667         } elsif ($age > 60*60*24*2) {
 668                 $age_str = int $age/60/60/24;
 669                 $age_str .= " days ago";
 670         } elsif ($age > 60*60*2) {
 671                 $age_str = int $age/60/60;
 672                 $age_str .= " hours ago";
 673         } elsif ($age > 60*2) {
 674                 $age_str = int $age/60;
 675                 $age_str .= " min ago";
 676         } elsif ($age > 2) {
 677                 $age_str = int $age;
 678                 $age_str .= " sec ago";
 679         } else {
 680                 $age_str .= " right now";
 681         }
 682         return $age_str;
 683 }
 684
 685 # convert file mode in octal to symbolic file mode string
 686 sub mode_str {
 687         my $mode = oct shift;
 688
 689         if (S_ISDIR($mode & S_IFMT)) {
 690                 return 'drwxr-xr-x';
 691         } elsif (S_ISLNK($mode)) {
 692                 return 'lrwxrwxrwx';
 693         } elsif (S_ISREG($mode)) {
 694                 # git cares only about the executable bit
 695                 if ($mode & S_IXUSR) {
 696                         return '-rwxr-xr-x';
 697                 } else {
 698                         return '-rw-r--r--';
 699                 };
 700         } else {
 701                 return '----------';
 702         }
 703 }
 704
 705 # convert file mode in octal to file type string
 706 sub file_type {
 707         my $mode = shift;
 708
 709         if ($mode !~ m/^[0-7]+$/) {
 710                 return $mode;
 711         } else {
 712                 $mode = oct $mode;
 713         }
 714
 715         if (S_ISDIR($mode & S_IFMT)) {
 716                 return "directory";
 717         } elsif (S_ISLNK($mode)) {
 718                 return "symlink";
 719         } elsif (S_ISREG($mode)) {
 720                 return "file";
 721         } else {
 722                 return "unknown";
 723         }
 724 }
 725
 726 ## ----------------------------------------------------------------------
 727 ## functions returning short HTML fragments, or transforming HTML fragments
 728 ## which don't beling to other sections
 729
 730 # format line of commit message or tag comment
 731 sub format_log_line_html {
 732         my $line = shift;
 733
 734         $line = esc_html($line);
 735         $line =~ s/ /&nbsp;/g;
 736         if ($line =~ m/([0-9a-fA-F]{40})/) {
 737                 my $hash_text = $1;
 738                 if (git_get_type($hash_text) eq "commit") {
 739                         my $link =
 740                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 741                                         -class => "text"}, $hash_text);
 742                         $line =~ s/$hash_text/$link/;
 743                 }
 744         }
 745         return $line;
 746 }
 747
 748 # format marker of refs pointing to given object
 749 sub format_ref_marker {
 750         my ($refs, $id) = @_;
 751         my $markers = '';
 752
 753         if (defined $refs->{$id}) {
 754                 foreach my $ref (@{$refs->{$id}}) {
 755                         my ($type, $name) = qw();
 756                         # e.g. tags/v2.6.11 or heads/next
 757                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 758                                 $type = $1;
 759                                 $name = $2;
 760                         } else {
 761                                 $type = "ref";
 762                                 $name = $ref;
 763                         }
 764
 765                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 766                 }
 767         }
 768
 769         if ($markers) {
 770                 return ' <span class="refs">'. $markers . '</span>';
 771         } else {
 772                 return "";
 773         }
 774 }
 775
 776 # format, perhaps shortened and with markers, title line
 777 sub format_subject_html {
 778         my ($long, $short, $href, $extra) = @_;
 779         $extra = '' unless defined($extra);
 780
 781         if (length($short) < length($long)) {
 782                 return $cgi->a({-href => $href, -class => "list subject",
 783                                 -title => to_utf8($long)},
 784                        esc_html($short) . $extra);
 785         } else {
 786                 return $cgi->a({-href => $href, -class => "list subject"},
 787                        esc_html($long)  . $extra);
 788         }
 789 }
 790
 791 sub format_diff_line {
 792         my $line = shift;
 793         my $char = substr($line, 0, 1);
 794         my $diff_class = "";
 795
 796         chomp $line;
 797
 798         if ($char eq '+') {
 799                 $diff_class = " add";
 800         } elsif ($char eq "-") {
 801                 $diff_class = " rem";
 802         } elsif ($char eq "@") {
 803                 $diff_class = " chunk_header";
 804         } elsif ($char eq "\\") {
 805                 $diff_class = " incomplete";
 806         }
 807         $line = untabify($line);
 808         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 809 }
 810
 811 ## ----------------------------------------------------------------------
 812 ## git utility subroutines, invoking git commands
 813
 814 # returns path to the core git executable and the --git-dir parameter as list
 815 sub git_cmd {
 816         return $GIT, '--git-dir='.$git_dir;
 817 }
 818
 819 # returns path to the core git executable and the --git-dir parameter as string
 820 sub git_cmd_str {
 821         return join(' ', git_cmd());
 822 }
 823
 824 # get HEAD ref of given project as hash
 825 sub git_get_head_hash {
 826         my $project = shift;
 827         my $o_git_dir = $git_dir;
 828         my $retval = undef;
 829         $git_dir = "$projectroot/$project";
 830         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 831                 my $head = <$fd>;
 832                 close $fd;
 833                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 834                         $retval = $1;
 835                 }
 836         }
 837         if (defined $o_git_dir) {
 838                 $git_dir = $o_git_dir;
 839         }
 840         return $retval;
 841 }
 842
 843 # get type of given object
 844 sub git_get_type {
 845         my $hash = shift;
 846
 847         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 848         my $type = <$fd>;
 849         close $fd or return;
 850         chomp $type;
 851         return $type;
 852 }
 853
 854 sub git_get_project_config {
 855         my ($key, $type) = @_;
 856
 857         return unless ($key);
 858         $key =~ s/^gitweb\.//;
 859         return if ($key =~ m/\W/);
 860
 861         my @x = (git_cmd(), 'repo-config');
 862         if (defined $type) { push @x, $type; }
 863         push @x, "--get";
 864         push @x, "gitweb.$key";
 865         my $val = qx(@x);
 866         chomp $val;
 867         return ($val);
 868 }
 869
 870 # get hash of given path at given ref
 871 sub git_get_hash_by_path {
 872         my $base = shift;
 873         my $path = shift || return undef;
 874         my $type = shift;
 875
 876         $path =~ s,/+$,,;
 877
 878         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 879                 or die_error(undef, "Open git-ls-tree failed");
 880         my $line = <$fd>;
 881         close $fd or return undef;
 882
 883         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 884         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 885         if (defined $type && $type ne $2) {
 886                 # type doesn't match
 887                 return undef;
 888         }
 889         return $3;
 890 }
 891
 892 ## ......................................................................
 893 ## git utility functions, directly accessing git repository
 894
 895 sub git_get_project_description {
 896         my $path = shift;
 897
 898         open my $fd, "$projectroot/$path/description" or return undef;
 899         my $descr = <$fd>;
 900         close $fd;
 901         chomp $descr;
 902         return $descr;
 903 }
 904
 905 sub git_get_project_url_list {
 906         my $path = shift;
 907
 908         open my $fd, "$projectroot/$path/cloneurl" or return;
 909         my @git_project_url_list = map { chomp; $_ } <$fd>;
 910         close $fd;
 911
 912         return wantarray ? @git_project_url_list : \@git_project_url_list;
 913 }
 914
 915 sub git_get_projects_list {
 916         my ($filter) = @_;
 917         my @list;
 918
 919         $filter ||= '';
 920         $filter =~ s/\.git$//;
 921
 922         if (-d $projects_list) {
 923                 # search in directory
 924                 my $dir = $projects_list . ($filter ? "/$filter" : '');
 925                 # remove the trailing "/"
 926                 $dir =~ s!/+$!!;
 927                 my $pfxlen = length("$dir");
 928
 929                 my ($check_forks) = gitweb_check_feature('forks');
 930
 931                 File::Find::find({
 932                         follow_fast => 1, # follow symbolic links
 933                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 934                         wanted => sub {
 935                                 # skip project-list toplevel, if we get it.
 936                                 return if (m!^[/.]$!);
 937                                 # only directories can be git repositories
 938                                 return unless (-d $_);
 939
 940                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 941                                 # we check related file in $projectroot
 942                                 if ($check_forks and $subdir =~ m#/.#) {
 943                                         $File::Find::prune = 1;
 944                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
 945                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
 946                                         $File::Find::prune = 1;
 947                                 }
 948                         },
 949                 }, "$dir");
 950
 951         } elsif (-f $projects_list) {
 952                 # read from file(url-encoded):
 953                 # 'git%2Fgit.git Linus+Torvalds'
 954                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 955                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 956                 open my ($fd), $projects_list or return;
 957                 while (my $line = <$fd>) {
 958                         chomp $line;
 959                         my ($path, $owner) = split ' ', $line;
 960                         $path = unescape($path);
 961                         $owner = unescape($owner);
 962                         if (!defined $path) {
 963                                 next;
 964                         }
 965                         if ($filter ne '') {
 966                                 # looking for forks;
 967                                 my $pfx = substr($path, 0, length($filter));
 968                                 if ($pfx ne $filter) {
 969                                         next;
 970                                 }
 971                                 my $sfx = substr($path, length($filter));
 972                                 if ($sfx !~ /^\/.*\.git$/) {
 973                                         next;
 974                                 }
 975                         }
 976                         if (check_export_ok("$projectroot/$path")) {
 977                                 my $pr = {
 978                                         path => $path,
 979                                         owner => to_utf8($owner),
 980                                 };
 981                                 push @list, $pr
 982                         }
 983                 }
 984                 close $fd;
 985         }
 986         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 987         return @list;
 988 }
 989
 990 sub git_get_project_owner {
 991         my $project = shift;
 992         my $owner;
 993
 994         return undef unless $project;
 995
 996         # read from file (url-encoded):
 997         # 'git%2Fgit.git Linus+Torvalds'
 998         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 999         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1000         if (-f $projects_list) {
1001                 open (my $fd , $projects_list);
1002                 while (my $line = <$fd>) {
1003                         chomp $line;
1004                         my ($pr, $ow) = split ' ', $line;
1005                         $pr = unescape($pr);
1006                         $ow = unescape($ow);
1007                         if ($pr eq $project) {
1008                                 $owner = to_utf8($ow);
1009                                 last;
1010                         }
1011                 }
1012                 close $fd;
1013         }
1014         if (!defined $owner) {
1015                 $owner = get_file_owner("$projectroot/$project");
1016         }
1017
1018         return $owner;
1019 }
1020
1021 sub git_get_last_activity {
1022         my ($path) = @_;
1023         my $fd;
1024
1025         $git_dir = "$projectroot/$path";
1026         open($fd, "-|", git_cmd(), 'for-each-ref',
1027              '--format=%(refname) %(committer)',
1028              '--sort=-committerdate',
1029              'refs/heads') or return;
1030         my $most_recent = <$fd>;
1031         close $fd or return;
1032         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1033                 my $timestamp = $1;
1034                 my $age = time - $timestamp;
1035                 return ($age, age_string($age));
1036         }
1037 }
1038
1039 sub git_get_references {
1040         my $type = shift || "";
1041         my %refs;
1042         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1043         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1044         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1045                 or return;
1046
1047         while (my $line = <$fd>) {
1048                 chomp $line;
1049                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1050                         if (defined $refs{$1}) {
1051                                 push @{$refs{$1}}, $2;
1052                         } else {
1053                                 $refs{$1} = [ $2 ];
1054                         }
1055                 }
1056         }
1057         close $fd or return;
1058         return \%refs;
1059 }
1060
1061 sub git_get_rev_name_tags {
1062         my $hash = shift || return undef;
1063
1064         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1065                 or return;
1066         my $name_rev = <$fd>;
1067         close $fd;
1068
1069         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1070                 return $1;
1071         } else {
1072                 # catches also '$hash undefined' output
1073                 return undef;
1074         }
1075 }
1076
1077 ## ----------------------------------------------------------------------
1078 ## parse to hash functions
1079
1080 sub parse_date {
1081         my $epoch = shift;
1082         my $tz = shift || "-0000";
1083
1084         my %date;
1085         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1086         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1087         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1088         $date{'hour'} = $hour;
1089         $date{'minute'} = $min;
1090         $date{'mday'} = $mday;
1091         $date{'day'} = $days[$wday];
1092         $date{'month'} = $months[$mon];
1093         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1094                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1095         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1096                              $mday, $months[$mon], $hour ,$min;
1097
1098         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1099         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1100         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1101         $date{'hour_local'} = $hour;
1102         $date{'minute_local'} = $min;
1103         $date{'tz_local'} = $tz;
1104         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1105                                    1900+$year, $mon+1, $mday,
1106                                    $hour, $min, $sec, $tz);
1107         return %date;
1108 }
1109
1110 sub parse_tag {
1111         my $tag_id = shift;
1112         my %tag;
1113         my @comment;
1114
1115         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1116         $tag{'id'} = $tag_id;
1117         while (my $line = <$fd>) {
1118                 chomp $line;
1119                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1120                         $tag{'object'} = $1;
1121                 } elsif ($line =~ m/^type (.+)$/) {
1122                         $tag{'type'} = $1;
1123                 } elsif ($line =~ m/^tag (.+)$/) {
1124                         $tag{'name'} = $1;
1125                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1126                         $tag{'author'} = $1;
1127                         $tag{'epoch'} = $2;
1128                         $tag{'tz'} = $3;
1129                 } elsif ($line =~ m/--BEGIN/) {
1130                         push @comment, $line;
1131                         last;
1132                 } elsif ($line eq "") {
1133                         last;
1134                 }
1135         }
1136         push @comment, <$fd>;
1137         $tag{'comment'} = \@comment;
1138         close $fd or return;
1139         if (!defined $tag{'name'}) {
1140                 return
1141         };
1142         return %tag
1143 }
1144
1145 sub parse_commit {
1146         my $commit_id = shift;
1147         my $commit_text = shift;
1148
1149         my @commit_lines;
1150         my %co;
1151
1152         if (defined $commit_text) {
1153                 @commit_lines = @$commit_text;
1154         } else {
1155                 local $/ = "\0";
1156                 open my $fd, "-|", git_cmd(), "rev-list",
1157                         "--header", "--parents", "--max-count=1",
1158                         $commit_id, "--"
1159                         or return;
1160                 @commit_lines = split '\n', <$fd>;
1161                 close $fd or return;
1162                 pop @commit_lines;
1163         }
1164         my $header = shift @commit_lines;
1165         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1166                 return;
1167         }
1168         ($co{'id'}, my @parents) = split ' ', $header;
1169         $co{'parents'} = \@parents;
1170         $co{'parent'} = $parents[0];
1171         while (my $line = shift @commit_lines) {
1172                 last if $line eq "\n";
1173                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1174                         $co{'tree'} = $1;
1175                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1176                         $co{'author'} = $1;
1177                         $co{'author_epoch'} = $2;
1178                         $co{'author_tz'} = $3;
1179                         if ($co{'author'} =~ m/^([^<]+) </) {
1180                                 $co{'author_name'} = $1;
1181                         } else {
1182                                 $co{'author_name'} = $co{'author'};
1183                         }
1184                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1185                         $co{'committer'} = $1;
1186                         $co{'committer_epoch'} = $2;
1187                         $co{'committer_tz'} = $3;
1188                         $co{'committer_name'} = $co{'committer'};
1189                         $co{'committer_name'} =~ s/ <.*//;
1190                 }
1191         }
1192         if (!defined $co{'tree'}) {
1193                 return;
1194         };
1195
1196         foreach my $title (@commit_lines) {
1197                 $title =~ s/^    //;
1198                 if ($title ne "") {
1199                         $co{'title'} = chop_str($title, 80, 5);
1200                         # remove leading stuff of merges to make the interesting part visible
1201                         if (length($title) > 50) {
1202                                 $title =~ s/^Automatic //;
1203                                 $title =~ s/^merge (of|with) /Merge ... /i;
1204                                 if (length($title) > 50) {
1205                                         $title =~ s/(http|rsync):\/\///;
1206                                 }
1207                                 if (length($title) > 50) {
1208                                         $title =~ s/(master|www|rsync)\.//;
1209                                 }
1210                                 if (length($title) > 50) {
1211                                         $title =~ s/kernel.org:?//;
1212                                 }
1213                                 if (length($title) > 50) {
1214                                         $title =~ s/\/pub\/scm//;
1215                                 }
1216                         }
1217                         $co{'title_short'} = chop_str($title, 50, 5);
1218                         last;
1219                 }
1220         }
1221         if ($co{'title'} eq "") {
1222                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1223         }
1224         # remove added spaces
1225         foreach my $line (@commit_lines) {
1226                 $line =~ s/^    //;
1227         }
1228         $co{'comment'} = \@commit_lines;
1229
1230         my $age = time - $co{'committer_epoch'};
1231         $co{'age'} = $age;
1232         $co{'age_string'} = age_string($age);
1233         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1234         if ($age > 60*60*24*7*2) {
1235                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1236                 $co{'age_string_age'} = $co{'age_string'};
1237         } else {
1238                 $co{'age_string_date'} = $co{'age_string'};
1239                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1240         }
1241         return %co;
1242 }
1243
1244 # parse ref from ref_file, given by ref_id, with given type
1245 sub parse_ref {
1246         my $ref_file = shift;
1247         my $ref_id = shift;
1248         my $type = shift || git_get_type($ref_id);
1249         my %ref_item;
1250
1251         $ref_item{'type'} = $type;
1252         $ref_item{'id'} = $ref_id;
1253         $ref_item{'epoch'} = 0;
1254         $ref_item{'age'} = "unknown";
1255         if ($type eq "tag") {
1256                 my %tag = parse_tag($ref_id);
1257                 $ref_item{'comment'} = $tag{'comment'};
1258                 if ($tag{'type'} eq "commit") {
1259                         my %co = parse_commit($tag{'object'});
1260                         $ref_item{'epoch'} = $co{'committer_epoch'};
1261                         $ref_item{'age'} = $co{'age_string'};
1262                 } elsif (defined($tag{'epoch'})) {
1263                         my $age = time - $tag{'epoch'};
1264                         $ref_item{'epoch'} = $tag{'epoch'};
1265                         $ref_item{'age'} = age_string($age);
1266                 }
1267                 $ref_item{'reftype'} = $tag{'type'};
1268                 $ref_item{'name'} = $tag{'name'};
1269                 $ref_item{'refid'} = $tag{'object'};
1270         } elsif ($type eq "commit"){
1271                 my %co = parse_commit($ref_id);
1272                 $ref_item{'reftype'} = "commit";
1273                 $ref_item{'name'} = $ref_file;
1274                 $ref_item{'title'} = $co{'title'};
1275                 $ref_item{'refid'} = $ref_id;
1276                 $ref_item{'epoch'} = $co{'committer_epoch'};
1277                 $ref_item{'age'} = $co{'age_string'};
1278         } else {
1279                 $ref_item{'reftype'} = $type;
1280                 $ref_item{'name'} = $ref_file;
1281                 $ref_item{'refid'} = $ref_id;
1282         }
1283
1284         return %ref_item;
1285 }
1286
1287 # parse line of git-diff-tree "raw" output
1288 sub parse_difftree_raw_line {
1289         my $line = shift;
1290         my %res;
1291
1292         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1293         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1294         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1295                 $res{'from_mode'} = $1;
1296                 $res{'to_mode'} = $2;
1297                 $res{'from_id'} = $3;
1298                 $res{'to_id'} = $4;
1299                 $res{'status'} = $5;
1300                 $res{'similarity'} = $6;
1301                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1302                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1303                 } else {
1304                         $res{'file'} = unquote($7);
1305                 }
1306         }
1307         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1308         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1309                 $res{'commit'} = $1;
1310         }
1311
1312         return wantarray ? %res : \%res;
1313 }
1314
1315 # parse line of git-ls-tree output
1316 sub parse_ls_tree_line ($;%) {
1317         my $line = shift;
1318         my %opts = @_;
1319         my %res;
1320
1321         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1322         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1323
1324         $res{'mode'} = $1;
1325         $res{'type'} = $2;
1326         $res{'hash'} = $3;
1327         if ($opts{'-z'}) {
1328                 $res{'name'} = $4;
1329         } else {
1330                 $res{'name'} = unquote($4);
1331         }
1332
1333         return wantarray ? %res : \%res;
1334 }
1335
1336 ## ......................................................................
1337 ## parse to array of hashes functions
1338
1339 sub git_get_heads_list {
1340         my $limit = shift;
1341         my @headslist;
1342
1343         open my $fd, '-|', git_cmd(), 'for-each-ref',
1344                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1345                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1346                 'refs/heads'
1347                 or return;
1348         while (my $line = <$fd>) {
1349                 my %ref_item;
1350
1351                 chomp $line;
1352                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1353                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1354                 my ($committer, $epoch, $tz) =
1355                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1356                 $name =~ s!^refs/heads/!!;
1357
1358                 $ref_item{'name'}  = $name;
1359                 $ref_item{'id'}    = $hash;
1360                 $ref_item{'title'} = $title || '(no commit message)';
1361                 $ref_item{'epoch'} = $epoch;
1362                 if ($epoch) {
1363                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1364                 } else {
1365                         $ref_item{'age'} = "unknown";
1366                 }
1367
1368                 push @headslist, \%ref_item;
1369         }
1370         close $fd;
1371
1372         return wantarray ? @headslist : \@headslist;
1373 }
1374
1375 sub git_get_tags_list {
1376         my $limit = shift;
1377         my @tagslist;
1378
1379         open my $fd, '-|', git_cmd(), 'for-each-ref',
1380                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1381                 '--format=%(objectname) %(objecttype) %(refname) '.
1382                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1383                 'refs/tags'
1384                 or return;
1385         while (my $line = <$fd>) {
1386                 my %ref_item;
1387
1388                 chomp $line;
1389                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1390                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1391                 my ($creator, $epoch, $tz) =
1392                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1393                 $name =~ s!^refs/tags/!!;
1394
1395                 $ref_item{'type'} = $type;
1396                 $ref_item{'id'} = $id;
1397                 $ref_item{'name'} = $name;
1398                 if ($type eq "tag") {
1399                         $ref_item{'subject'} = $title;
1400                         $ref_item{'reftype'} = $reftype;
1401                         $ref_item{'refid'}   = $refid;
1402                 } else {
1403                         $ref_item{'reftype'} = $type;
1404                         $ref_item{'refid'}   = $id;
1405                 }
1406
1407                 if ($type eq "tag" || $type eq "commit") {
1408                         $ref_item{'epoch'} = $epoch;
1409                         if ($epoch) {
1410                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1411                         } else {
1412                                 $ref_item{'age'} = "unknown";
1413                         }
1414                 }
1415
1416                 push @tagslist, \%ref_item;
1417         }
1418         close $fd;
1419
1420         return wantarray ? @tagslist : \@tagslist;
1421 }
1422
1423 ## ----------------------------------------------------------------------
1424 ## filesystem-related functions
1425
1426 sub get_file_owner {
1427         my $path = shift;
1428
1429         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1430         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1431         if (!defined $gcos) {
1432                 return undef;
1433         }
1434         my $owner = $gcos;
1435         $owner =~ s/[,;].*$//;
1436         return to_utf8($owner);
1437 }
1438
1439 ## ......................................................................
1440 ## mimetype related functions
1441
1442 sub mimetype_guess_file {
1443         my $filename = shift;
1444         my $mimemap = shift;
1445         -r $mimemap or return undef;
1446
1447         my %mimemap;
1448         open(MIME, $mimemap) or return undef;
1449         while (<MIME>) {
1450                 next if m/^#/; # skip comments
1451                 my ($mime, $exts) = split(/\t+/);
1452                 if (defined $exts) {
1453                         my @exts = split(/\s+/, $exts);
1454                         foreach my $ext (@exts) {
1455                                 $mimemap{$ext} = $mime;
1456                         }
1457                 }
1458         }
1459         close(MIME);
1460
1461         $filename =~ /\.([^.]*)$/;
1462         return $mimemap{$1};
1463 }
1464
1465 sub mimetype_guess {
1466         my $filename = shift;
1467         my $mime;
1468         $filename =~ /\./ or return undef;
1469
1470         if ($mimetypes_file) {
1471                 my $file = $mimetypes_file;
1472                 if ($file !~ m!^/!) { # if it is relative path
1473                         # it is relative to project
1474                         $file = "$projectroot/$project/$file";
1475                 }
1476                 $mime = mimetype_guess_file($filename, $file);
1477         }
1478         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1479         return $mime;
1480 }
1481
1482 sub blob_mimetype {
1483         my $fd = shift;
1484         my $filename = shift;
1485
1486         if ($filename) {
1487                 my $mime = mimetype_guess($filename);
1488                 $mime and return $mime;
1489         }
1490
1491         # just in case
1492         return $default_blob_plain_mimetype unless $fd;
1493
1494         if (-T $fd) {
1495                 return 'text/plain' .
1496                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1497         } elsif (! $filename) {
1498                 return 'application/octet-stream';
1499         } elsif ($filename =~ m/\.png$/i) {
1500                 return 'image/png';
1501         } elsif ($filename =~ m/\.gif$/i) {
1502                 return 'image/gif';
1503         } elsif ($filename =~ m/\.jpe?g$/i) {
1504                 return 'image/jpeg';
1505         } else {
1506                 return 'application/octet-stream';
1507         }
1508 }
1509
1510 ## ======================================================================
1511 ## functions printing HTML: header, footer, error page
1512
1513 sub git_header_html {
1514         my $status = shift || "200 OK";
1515         my $expires = shift;
1516
1517         my $title = "$site_name";
1518         if (defined $project) {
1519                 $title .= " - $project";
1520                 if (defined $action) {
1521                         $title .= "/$action";
1522                         if (defined $file_name) {
1523                                 $title .= " - " . esc_html($file_name);
1524                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1525                                         $title .= "/";
1526                                 }
1527                         }
1528                 }
1529         }
1530         my $content_type;
1531         # require explicit support from the UA if we are to send the page as
1532         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1533         # we have to do this because MSIE sometimes globs '*/*', pretending to
1534         # support xhtml+xml but choking when it gets what it asked for.
1535         if (defined $cgi->http('HTTP_ACCEPT') &&
1536             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1537             $cgi->Accept('application/xhtml+xml') != 0) {
1538                 $content_type = 'application/xhtml+xml';
1539         } else {
1540                 $content_type = 'text/html';
1541         }
1542         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1543                            -status=> $status, -expires => $expires);
1544         print <<EOF;
1545 <?xml version="1.0" encoding="utf-8"?>
1546 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1547 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1548 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1549 <!-- git core binaries version $git_version -->
1550 <head>
1551 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1552 <meta name="generator" content="gitweb/$version git/$git_version"/>
1553 <meta name="robots" content="index, nofollow"/>
1554 <title>$title</title>
1555 EOF
1556 # print out each stylesheet that exist
1557         if (defined $stylesheet) {
1558 #provides backwards capability for those people who define style sheet in a config file
1559                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1560         } else {
1561                 foreach my $stylesheet (@stylesheets) {
1562                         next unless $stylesheet;
1563                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1564                 }
1565         }
1566         if (defined $project) {
1567                 printf('<link rel="alternate" title="%s log" '.
1568                        'href="%s" type="application/rss+xml"/>'."\n",
1569                        esc_param($project), href(action=>"rss"));
1570         } else {
1571                 printf('<link rel="alternate" title="%s projects list" '.
1572                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1573                        $site_name, href(project=>undef, action=>"project_index"));
1574                 printf('<link rel="alternate" title="%s projects logs" '.
1575                        'href="%s" type="text/x-opml"/>'."\n",
1576                        $site_name, href(project=>undef, action=>"opml"));
1577         }
1578         if (defined $favicon) {
1579                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1580         }
1581
1582         print "</head>\n" .
1583               "<body>\n";
1584
1585         if (-f $site_header) {
1586                 open (my $fd, $site_header);
1587                 print <$fd>;
1588                 close $fd;
1589         }
1590
1591         print "<div class=\"page_header\">\n" .
1592               $cgi->a({-href => esc_url($logo_url),
1593                        -title => $logo_label},
1594                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1595         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1596         if (defined $project) {
1597                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1598                 if (defined $action) {
1599                         print " / $action";
1600                 }
1601                 print "\n";
1602                 if (!defined $searchtext) {
1603                         $searchtext = "";
1604                 }
1605                 my $search_hash;
1606                 if (defined $hash_base) {
1607                         $search_hash = $hash_base;
1608                 } elsif (defined $hash) {
1609                         $search_hash = $hash;
1610                 } else {
1611                         $search_hash = "HEAD";
1612                 }
1613                 $cgi->param("a", "search");
1614                 $cgi->param("h", $search_hash);
1615                 $cgi->param("p", $project);
1616                 print $cgi->startform(-method => "get", -action => $my_uri) .
1617                       "<div class=\"search\">\n" .
1618                       $cgi->hidden(-name => "p") . "\n" .
1619                       $cgi->hidden(-name => "a") . "\n" .
1620                       $cgi->hidden(-name => "h") . "\n" .
1621                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1622                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1623                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1624                       " search:\n",
1625                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1626                       "</div>" .
1627                       $cgi->end_form() . "\n";
1628         }
1629         print "</div>\n";
1630 }
1631
1632 sub git_footer_html {
1633         print "<div class=\"page_footer\">\n";
1634         if (defined $project) {
1635                 my $descr = git_get_project_description($project);
1636                 if (defined $descr) {
1637                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1638                 }
1639                 print $cgi->a({-href => href(action=>"rss"),
1640                               -class => "rss_logo"}, "RSS") . "\n";
1641         } else {
1642                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1643                               -class => "rss_logo"}, "OPML") . " ";
1644                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1645                               -class => "rss_logo"}, "TXT") . "\n";
1646         }
1647         print "</div>\n" ;
1648
1649         if (-f $site_footer) {
1650                 open (my $fd, $site_footer);
1651                 print <$fd>;
1652                 close $fd;
1653         }
1654
1655         print "</body>\n" .
1656               "</html>";
1657 }
1658
1659 sub die_error {
1660         my $status = shift || "403 Forbidden";
1661         my $error = shift || "Malformed query, file missing or permission denied";
1662
1663         git_header_html($status);
1664         print <<EOF;
1665 <div class="page_body">
1666 <br /><br />
1667 $status - $error
1668 <br />
1669 </div>
1670 EOF
1671         git_footer_html();
1672         exit;
1673 }
1674
1675 ## ----------------------------------------------------------------------
1676 ## functions printing or outputting HTML: navigation
1677
1678 sub git_print_page_nav {
1679         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1680         $extra = '' if !defined $extra; # pager or formats
1681
1682         my @navs = qw(summary shortlog log commit commitdiff tree);
1683         if ($suppress) {
1684                 @navs = grep { $_ ne $suppress } @navs;
1685         }
1686
1687         my %arg = map { $_ => {action=>$_} } @navs;
1688         if (defined $head) {
1689                 for (qw(commit commitdiff)) {
1690                         $arg{$_}{hash} = $head;
1691                 }
1692                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1693                         for (qw(shortlog log)) {
1694                                 $arg{$_}{hash} = $head;
1695                         }
1696                 }
1697         }
1698         $arg{tree}{hash} = $treehead if defined $treehead;
1699         $arg{tree}{hash_base} = $treebase if defined $treebase;
1700
1701         print "<div class=\"page_nav\">\n" .
1702                 (join " | ",
1703                  map { $_ eq $current ?
1704                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1705                  } @navs);
1706         print "<br/>\n$extra<br/>\n" .
1707               "</div>\n";
1708 }
1709
1710 sub format_paging_nav {
1711         my ($action, $hash, $head, $page, $nrevs) = @_;
1712         my $paging_nav;
1713
1714
1715         if ($hash ne $head || $page) {
1716                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1717         } else {
1718                 $paging_nav .= "HEAD";
1719         }
1720
1721         if ($page > 0) {
1722                 $paging_nav .= " &sdot; " .
1723                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1724                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1725         } else {
1726                 $paging_nav .= " &sdot; prev";
1727         }
1728
1729         if ($nrevs >= (100 * ($page+1)-1)) {
1730                 $paging_nav .= " &sdot; " .
1731                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1732                                  -accesskey => "n", -title => "Alt-n"}, "next");
1733         } else {
1734                 $paging_nav .= " &sdot; next";
1735         }
1736
1737         return $paging_nav;
1738 }
1739
1740 ## ......................................................................
1741 ## functions printing or outputting HTML: div
1742
1743 sub git_print_header_div {
1744         my ($action, $title, $hash, $hash_base) = @_;
1745         my %args = ();
1746
1747         $args{action} = $action;
1748         $args{hash} = $hash if $hash;
1749         $args{hash_base} = $hash_base if $hash_base;
1750
1751         print "<div class=\"header\">\n" .
1752               $cgi->a({-href => href(%args), -class => "title"},
1753               $title ? $title : $action) .
1754               "\n</div>\n";
1755 }
1756
1757 #sub git_print_authorship (\%) {
1758 sub git_print_authorship {
1759         my $co = shift;
1760
1761         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1762         print "<div class=\"author_date\">" .
1763               esc_html($co->{'author_name'}) .
1764               " [$ad{'rfc2822'}";
1765         if ($ad{'hour_local'} < 6) {
1766                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1767                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1768         } else {
1769                 printf(" (%02d:%02d %s)",
1770                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1771         }
1772         print "]</div>\n";
1773 }
1774
1775 sub git_print_page_path {
1776         my $name = shift;
1777         my $type = shift;
1778         my $hb = shift;
1779
1780
1781         print "<div class=\"page_path\">";
1782         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1783                       -title => 'tree root'}, "[$project]");
1784         print " / ";
1785         if (defined $name) {
1786                 my @dirname = split '/', $name;
1787                 my $basename = pop @dirname;
1788                 my $fullname = '';
1789
1790                 foreach my $dir (@dirname) {
1791                         $fullname .= ($fullname ? '/' : '') . $dir;
1792                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1793                                                      hash_base=>$hb),
1794                                       -title => $fullname}, esc_html($dir));
1795                         print " / ";
1796                 }
1797                 if (defined $type && $type eq 'blob') {
1798                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1799                                                      hash_base=>$hb),
1800                                       -title => $name}, esc_html($basename));
1801                 } elsif (defined $type && $type eq 'tree') {
1802                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1803                                                      hash_base=>$hb),
1804                                       -title => $name}, esc_html($basename));
1805                         print " / ";
1806                 } else {
1807                         print esc_html($basename);
1808                 }
1809         }
1810         print "<br/></div>\n";
1811 }
1812
1813 # sub git_print_log (\@;%) {
1814 sub git_print_log ($;%) {
1815         my $log = shift;
1816         my %opts = @_;
1817
1818         if ($opts{'-remove_title'}) {
1819                 # remove title, i.e. first line of log
1820                 shift @$log;
1821         }
1822         # remove leading empty lines
1823         while (defined $log->[0] && $log->[0] eq "") {
1824                 shift @$log;
1825         }
1826
1827         # print log
1828         my $signoff = 0;
1829         my $empty = 0;
1830         foreach my $line (@$log) {
1831                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1832                         $signoff = 1;
1833                         $empty = 0;
1834                         if (! $opts{'-remove_signoff'}) {
1835                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1836                                 next;
1837                         } else {
1838                                 # remove signoff lines
1839                                 next;
1840                         }
1841                 } else {
1842                         $signoff = 0;
1843                 }
1844
1845                 # print only one empty line
1846                 # do not print empty line after signoff
1847                 if ($line eq "") {
1848                         next if ($empty || $signoff);
1849                         $empty = 1;
1850                 } else {
1851                         $empty = 0;
1852                 }
1853
1854                 print format_log_line_html($line) . "<br/>\n";
1855         }
1856
1857         if ($opts{'-final_empty_line'}) {
1858                 # end with single empty line
1859                 print "<br/>\n" unless $empty;
1860         }
1861 }
1862
1863 # print tree entry (row of git_tree), but without encompassing <tr> element
1864 sub git_print_tree_entry {
1865         my ($t, $basedir, $hash_base, $have_blame) = @_;
1866
1867         my %base_key = ();
1868         $base_key{hash_base} = $hash_base if defined $hash_base;
1869
1870         # The format of a table row is: mode list link.  Where mode is
1871         # the mode of the entry, list is the name of the entry, an href,
1872         # and link is the action links of the entry.
1873
1874         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1875         if ($t->{'type'} eq "blob") {
1876                 print "<td class=\"list\">" .
1877                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1878                                                file_name=>"$basedir$t->{'name'}", %base_key),
1879                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1880                 print "<td class=\"link\">";
1881                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1882                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1883                               "blob");
1884                 if ($have_blame) {
1885                         print " | " .
1886                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1887                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1888                                             "blame");
1889                 }
1890                 if (defined $hash_base) {
1891                         print " | " .
1892                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1893                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1894                                       "history");
1895                 }
1896                 print " | " .
1897                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1898                                                file_name=>"$basedir$t->{'name'}")},
1899                                 "raw");
1900                 print "</td>\n";
1901
1902         } elsif ($t->{'type'} eq "tree") {
1903                 print "<td class=\"list\">";
1904                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1905                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1906                               esc_html($t->{'name'}));
1907                 print "</td>\n";
1908                 print "<td class=\"link\">";
1909                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1910                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1911                               "tree");
1912                 if (defined $hash_base) {
1913                         print " | " .
1914                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1915                                                      file_name=>"$basedir$t->{'name'}")},
1916                                       "history");
1917                 }
1918                 print "</td>\n";
1919         }
1920 }
1921
1922 ## ......................................................................
1923 ## functions printing large fragments of HTML
1924
1925 sub git_difftree_body {
1926         my ($difftree, $hash, $parent) = @_;
1927
1928         print "<div class=\"list_head\">\n";
1929         if ($#{$difftree} > 10) {
1930                 print(($#{$difftree} + 1) . " files changed:\n");
1931         }
1932         print "</div>\n";
1933
1934         print "<table class=\"diff_tree\">\n";
1935         my $alternate = 1;
1936         my $patchno = 0;
1937         foreach my $line (@{$difftree}) {
1938                 my %diff = parse_difftree_raw_line($line);
1939
1940                 if ($alternate) {
1941                         print "<tr class=\"dark\">\n";
1942                 } else {
1943                         print "<tr class=\"light\">\n";
1944                 }
1945                 $alternate ^= 1;
1946
1947                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1948                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1949                 if ($diff{'to_mode'} ne ('0' x 6)) {
1950                         $to_mode_oct = oct $diff{'to_mode'};
1951                         if (S_ISREG($to_mode_oct)) { # only for regular file
1952                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1953                         }
1954                         $to_file_type = file_type($diff{'to_mode'});
1955                 }
1956                 if ($diff{'from_mode'} ne ('0' x 6)) {
1957                         $from_mode_oct = oct $diff{'from_mode'};
1958                         if (S_ISREG($to_mode_oct)) { # only for regular file
1959                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1960                         }
1961                         $from_file_type = file_type($diff{'from_mode'});
1962                 }
1963
1964                 if ($diff{'status'} eq "A") { # created
1965                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1966                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1967                         $mode_chng   .= "]</span>";
1968                         print "<td>";
1969                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1970                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1971                                       -class => "list"}, esc_html($diff{'file'}));
1972                         print "</td>\n";
1973                         print "<td>$mode_chng</td>\n";
1974                         print "<td class=\"link\">";
1975                         if ($action eq 'commitdiff') {
1976                                 # link to patch
1977                                 $patchno++;
1978                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1979                         }
1980                         print "</td>\n";
1981
1982                 } elsif ($diff{'status'} eq "D") { # deleted
1983                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1984                         print "<td>";
1985                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1986                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1987                                        -class => "list"}, esc_html($diff{'file'}));
1988                         print "</td>\n";
1989                         print "<td>$mode_chng</td>\n";
1990                         print "<td class=\"link\">";
1991                         if ($action eq 'commitdiff') {
1992                                 # link to patch
1993                                 $patchno++;
1994                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1995                                 print " | ";
1996                         }
1997                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1998                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1999                                       "blob") . " | ";
2000                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2001                                                      file_name=>$diff{'file'})},
2002                                       "blame") . " | ";
2003                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2004                                                      file_name=>$diff{'file'})},
2005                                       "history");
2006                         print "</td>\n";
2007
2008                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2009                         my $mode_chnge = "";
2010                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2011                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2012                                 if ($from_file_type != $to_file_type) {
2013                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2014                                 }
2015                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2016                                         if ($from_mode_str && $to_mode_str) {
2017                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2018                                         } elsif ($to_mode_str) {
2019                                                 $mode_chnge .= " mode: $to_mode_str";
2020                                         }
2021                                 }
2022                                 $mode_chnge .= "]</span>\n";
2023                         }
2024                         print "<td>";
2025                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2026                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2027                                       -class => "list"}, esc_html($diff{'file'}));
2028                         print "</td>\n";
2029                         print "<td>$mode_chnge</td>\n";
2030                         print "<td class=\"link\">";
2031                         if ($action eq 'commitdiff') {
2032                                 # link to patch
2033                                 $patchno++;
2034                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2035                                       " | ";
2036                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2037                                 # "commit" view and modified file (not onlu mode changed)
2038                                 print $cgi->a({-href => href(action=>"blobdiff",
2039                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2040                                                              hash_base=>$hash, hash_parent_base=>$parent,
2041                                                              file_name=>$diff{'file'})},
2042                                               "diff") .
2043                                       " | ";
2044                         }
2045                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2046                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2047                                       "blob") . " | ";
2048                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2049                                                      file_name=>$diff{'file'})},
2050                                       "blame") . " | ";
2051                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2052                                                      file_name=>$diff{'file'})},
2053                                       "history");
2054                         print "</td>\n";
2055
2056                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2057                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2058                         my $nstatus = $status_name{$diff{'status'}};
2059                         my $mode_chng = "";
2060                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2061                                 # mode also for directories, so we cannot use $to_mode_str
2062                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2063                         }
2064                         print "<td>" .
2065                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2066                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2067                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
2068                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2069                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2070                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2071                                       -class => "list"}, esc_html($diff{'from_file'})) .
2072                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2073                               "<td class=\"link\">";
2074                         if ($action eq 'commitdiff') {
2075                                 # link to patch
2076                                 $patchno++;
2077                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2078                                       " | ";
2079                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2080                                 # "commit" view and modified file (not only pure rename or copy)
2081                                 print $cgi->a({-href => href(action=>"blobdiff",
2082                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2083                                                              hash_base=>$hash, hash_parent_base=>$parent,
2084                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2085                                               "diff") .
2086                                       " | ";
2087                         }
2088                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2089                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2090                                       "blob") . " | ";
2091                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2092                                                      file_name=>$diff{'from_file'})},
2093                                       "blame") . " | ";
2094                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2095                                                     file_name=>$diff{'from_file'})},
2096                                       "history");
2097                         print "</td>\n";
2098
2099                 } # we should not encounter Unmerged (U) or Unknown (X) status
2100                 print "</tr>\n";
2101         }
2102         print "</table>\n";
2103 }
2104
2105 sub git_patchset_body {
2106         my ($fd, $difftree, $hash, $hash_parent) = @_;
2107
2108         my $patch_idx = 0;
2109         my $in_header = 0;
2110         my $patch_found = 0;
2111         my $diffinfo;
2112
2113         print "<div class=\"patchset\">\n";
2114
2115         LINE:
2116         while (my $patch_line = <$fd>) {
2117                 chomp $patch_line;
2118
2119                 if ($patch_line =~ m/^diff /) { # "git diff" header
2120                         # beginning of patch (in patchset)
2121                         if ($patch_found) {
2122                                 # close previous patch
2123                                 print "</div>\n"; # class="patch"
2124                         } else {
2125                                 # first patch in patchset
2126                                 $patch_found = 1;
2127                         }
2128                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2129
2130                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2131                                 $diffinfo = $difftree->[$patch_idx];
2132                         } else {
2133                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2134                         }
2135                         $patch_idx++;
2136
2137                         if ($diffinfo->{'status'} eq "A") { # added
2138                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2139                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2140                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2141                                               $diffinfo->{'to_id'}) . " (new)" .
2142                                       "</div>\n"; # class="diff_info"
2143
2144                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2145                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2146                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2147                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2148                                               $diffinfo->{'from_id'}) . " (deleted)" .
2149                                       "</div>\n"; # class="diff_info"
2150
2151                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2152                                  $diffinfo->{'status'} eq "C" || # copied
2153                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2154                                 print "<div class=\"diff_info\">" .
2155                                       file_type($diffinfo->{'from_mode'}) . ":" .
2156                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2157                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2158                                               $diffinfo->{'from_id'}) .
2159                                       " -> " .
2160                                       file_type($diffinfo->{'to_mode'}) . ":" .
2161                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2162                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2163                                               $diffinfo->{'to_id'});
2164                                 print "</div>\n"; # class="diff_info"
2165
2166                         } else { # modified, mode changed, ...
2167                                 print "<div class=\"diff_info\">" .
2168                                       file_type($diffinfo->{'from_mode'}) . ":" .
2169                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2170                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2171                                               $diffinfo->{'from_id'}) .
2172                                       " -> " .
2173                                       file_type($diffinfo->{'to_mode'}) . ":" .
2174                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2175                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2176                                               $diffinfo->{'to_id'});
2177                                 print "</div>\n"; # class="diff_info"
2178                         }
2179
2180                         #print "<div class=\"diff extended_header\">\n";
2181                         $in_header = 1;
2182                         next LINE;
2183                 } # start of patch in patchset
2184
2185
2186                 if ($in_header && $patch_line =~ m/^---/) {
2187                         #print "</div>\n"; # class="diff extended_header"
2188                         $in_header = 0;
2189
2190                         my $file = $diffinfo->{'from_file'};
2191                         $file  ||= $diffinfo->{'file'};
2192                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2193                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2194                                         -class => "list"}, esc_html($file));
2195                         $patch_line =~ s|a/.*$|a/$file|g;
2196                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2197
2198                         $patch_line = <$fd>;
2199                         chomp $patch_line;
2200
2201                         #$patch_line =~ m/^+++/;
2202                         $file    = $diffinfo->{'to_file'};
2203                         $file  ||= $diffinfo->{'file'};
2204                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2205                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2206                                         -class => "list"}, esc_html($file));
2207                         $patch_line =~ s|b/.*|b/$file|g;
2208                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2209
2210                         next LINE;
2211                 }
2212                 next LINE if $in_header;
2213
2214                 print format_diff_line($patch_line);
2215         }
2216         print "</div>\n" if $patch_found; # class="patch"
2217
2218         print "</div>\n"; # class="patchset"
2219 }
2220
2221 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2222
2223 sub git_project_list_body {
2224         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2225
2226         my ($check_forks) = gitweb_check_feature('forks');
2227
2228         my @projects;
2229         foreach my $pr (@$projlist) {
2230                 my (@aa) = git_get_last_activity($pr->{'path'});
2231                 unless (@aa) {
2232                         next;
2233                 }
2234                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2235                 if (!defined $pr->{'descr'}) {
2236                         my $descr = git_get_project_description($pr->{'path'}) || "";
2237                         $pr->{'descr'} = chop_str($descr, 25, 5);
2238                 }
2239                 if (!defined $pr->{'owner'}) {
2240                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2241                 }
2242                 if ($check_forks) {
2243                         my $pname = $pr->{'path'};
2244                         if (($pname =~ s/\.git$//) &&
2245                             ($pname !~ /\/$/) &&
2246                             (-d "$projectroot/$pname")) {
2247                                 $pr->{'forks'} = "-d $projectroot/$pname";
2248                         }
2249                         else {
2250                                 $pr->{'forks'} = 0;
2251                         }
2252                 }
2253                 push @projects, $pr;
2254         }
2255
2256         $order ||= "project";
2257         $from = 0 unless defined $from;
2258         $to = $#projects if (!defined $to || $#projects < $to);
2259
2260         print "<table class=\"project_list\">\n";
2261         unless ($no_header) {
2262                 print "<tr>\n";
2263                 if ($check_forks) {
2264                         print "<th></th>\n";
2265                 }
2266                 if ($order eq "project") {
2267                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2268                         print "<th>Project</th>\n";
2269                 } else {
2270                         print "<th>" .
2271                               $cgi->a({-href => href(project=>undef, order=>'project'),
2272                                        -class => "header"}, "Project") .
2273                               "</th>\n";
2274                 }
2275                 if ($order eq "descr") {
2276                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2277                         print "<th>Description</th>\n";
2278                 } else {
2279                         print "<th>" .
2280                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2281                                        -class => "header"}, "Description") .
2282                               "</th>\n";
2283                 }
2284                 if ($order eq "owner") {
2285                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2286                         print "<th>Owner</th>\n";
2287                 } else {
2288                         print "<th>" .
2289                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2290                                        -class => "header"}, "Owner") .
2291                               "</th>\n";
2292                 }
2293                 if ($order eq "age") {
2294                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2295                         print "<th>Last Change</th>\n";
2296                 } else {
2297                         print "<th>" .
2298                               $cgi->a({-href => href(project=>undef, order=>'age'),
2299                                        -class => "header"}, "Last Change") .
2300                               "</th>\n";
2301                 }
2302                 print "<th></th>\n" .
2303                       "</tr>\n";
2304         }
2305         my $alternate = 1;
2306         for (my $i = $from; $i <= $to; $i++) {
2307                 my $pr = $projects[$i];
2308                 if ($alternate) {
2309                         print "<tr class=\"dark\">\n";
2310                 } else {
2311                         print "<tr class=\"light\">\n";
2312                 }
2313                 $alternate ^= 1;
2314                 if ($check_forks) {
2315                         print "<td>";
2316                         if ($pr->{'forks'}) {
2317                                 print "<!-- $pr->{'forks'} -->\n";
2318                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2319                         }
2320                         print "</td>\n";
2321                 }
2322                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2323                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2324                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2325                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2326                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2327                       $pr->{'age_string'} . "</td>\n" .
2328                       "<td class=\"link\">" .
2329                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2330                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2331                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2332                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2333                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2334                       "</td>\n" .
2335                       "</tr>\n";
2336         }
2337         if (defined $extra) {
2338                 print "<tr>\n";
2339                 if ($check_forks) {
2340                         print "<td></td>\n";
2341                 }
2342                 print "<td colspan=\"5\">$extra</td>\n" .
2343                       "</tr>\n";
2344         }
2345         print "</table>\n";
2346 }
2347
2348 sub git_shortlog_body {
2349         # uses global variable $project
2350         my ($revlist, $from, $to, $refs, $extra) = @_;
2351
2352         $from = 0 unless defined $from;
2353         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2354
2355         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2356         my $alternate = 1;
2357         for (my $i = $from; $i <= $to; $i++) {
2358                 my $commit = $revlist->[$i];
2359                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2360                 my $ref = format_ref_marker($refs, $commit);
2361                 my %co = parse_commit($commit);
2362                 if ($alternate) {
2363                         print "<tr class=\"dark\">\n";
2364                 } else {
2365                         print "<tr class=\"light\">\n";
2366                 }
2367                 $alternate ^= 1;
2368                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2369                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2370                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2371                       "<td>";
2372                 print format_subject_html($co{'title'}, $co{'title_short'},
2373                                           href(action=>"commit", hash=>$commit), $ref);
2374                 print "</td>\n" .
2375                       "<td class=\"link\">" .
2376                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2377                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2378                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2379                 if (gitweb_have_snapshot()) {
2380                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2381                 }
2382                 print "</td>\n" .
2383                       "</tr>\n";
2384         }
2385         if (defined $extra) {
2386                 print "<tr>\n" .
2387                       "<td colspan=\"4\">$extra</td>\n" .
2388                       "</tr>\n";
2389         }
2390         print "</table>\n";
2391 }
2392
2393 sub git_history_body {
2394         # Warning: assumes constant type (blob or tree) during history
2395         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2396
2397         $from = 0 unless defined $from;
2398         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2399
2400         print "<table class=\"history\" cellspacing=\"0\">\n";
2401         my $alternate = 1;
2402         for (my $i = $from; $i <= $to; $i++) {
2403                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2404                         next;
2405                 }
2406
2407                 my $commit = $1;
2408                 my %co = parse_commit($commit);
2409                 if (!%co) {
2410                         next;
2411                 }
2412
2413                 my $ref = format_ref_marker($refs, $commit);
2414
2415                 if ($alternate) {
2416                         print "<tr class=\"dark\">\n";
2417                 } else {
2418                         print "<tr class=\"light\">\n";
2419                 }
2420                 $alternate ^= 1;
2421                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2422                       # shortlog uses      chop_str($co{'author_name'}, 10)
2423                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2424                       "<td>";
2425                 # originally git_history used chop_str($co{'title'}, 50)
2426                 print format_subject_html($co{'title'}, $co{'title_short'},
2427                                           href(action=>"commit", hash=>$commit), $ref);
2428                 print "</td>\n" .
2429                       "<td class=\"link\">" .
2430                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2431                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2432
2433                 if ($ftype eq 'blob') {
2434                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2435                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2436                         if (defined $blob_current && defined $blob_parent &&
2437                                         $blob_current ne $blob_parent) {
2438                                 print " | " .
2439                                         $cgi->a({-href => href(action=>"blobdiff",
2440                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2441                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2442                                                                file_name=>$file_name)},
2443                                                 "diff to current");
2444                         }
2445                 }
2446                 print "</td>\n" .
2447                       "</tr>\n";
2448         }
2449         if (defined $extra) {
2450                 print "<tr>\n" .
2451                       "<td colspan=\"4\">$extra</td>\n" .
2452                       "</tr>\n";
2453         }
2454         print "</table>\n";
2455 }
2456
2457 sub git_tags_body {
2458         # uses global variable $project
2459         my ($taglist, $from, $to, $extra) = @_;
2460         $from = 0 unless defined $from;
2461         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2462
2463         print "<table class=\"tags\" cellspacing=\"0\">\n";
2464         my $alternate = 1;
2465         for (my $i = $from; $i <= $to; $i++) {
2466                 my $entry = $taglist->[$i];
2467                 my %tag = %$entry;
2468                 my $comment = $tag{'subject'};
2469                 my $comment_short;
2470                 if (defined $comment) {
2471                         $comment_short = chop_str($comment, 30, 5);
2472                 }
2473                 if ($alternate) {
2474                         print "<tr class=\"dark\">\n";
2475                 } else {
2476                         print "<tr class=\"light\">\n";
2477                 }
2478                 $alternate ^= 1;
2479                 print "<td><i>$tag{'age'}</i></td>\n" .
2480                       "<td>" .
2481                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2482                                -class => "list name"}, esc_html($tag{'name'})) .
2483                       "</td>\n" .
2484                       "<td>";
2485                 if (defined $comment) {
2486                         print format_subject_html($comment, $comment_short,
2487                                                   href(action=>"tag", hash=>$tag{'id'}));
2488                 }
2489                 print "</td>\n" .
2490                       "<td class=\"selflink\">";
2491                 if ($tag{'type'} eq "tag") {
2492                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2493                 } else {
2494                         print "&nbsp;";
2495                 }
2496                 print "</td>\n" .
2497                       "<td class=\"link\">" . " | " .
2498                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2499                 if ($tag{'reftype'} eq "commit") {
2500                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2501                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2502                 } elsif ($tag{'reftype'} eq "blob") {
2503                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2504                 }
2505                 print "</td>\n" .
2506                       "</tr>";
2507         }
2508         if (defined $extra) {
2509                 print "<tr>\n" .
2510                       "<td colspan=\"5\">$extra</td>\n" .
2511                       "</tr>\n";
2512         }
2513         print "</table>\n";
2514 }
2515
2516 sub git_heads_body {
2517         # uses global variable $project
2518         my ($headlist, $head, $from, $to, $extra) = @_;
2519         $from = 0 unless defined $from;
2520         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2521
2522         print "<table class=\"heads\" cellspacing=\"0\">\n";
2523         my $alternate = 1;
2524         for (my $i = $from; $i <= $to; $i++) {
2525                 my $entry = $headlist->[$i];
2526                 my %ref = %$entry;
2527                 my $curr = $ref{'id'} eq $head;
2528                 if ($alternate) {
2529                         print "<tr class=\"dark\">\n";
2530                 } else {
2531                         print "<tr class=\"light\">\n";
2532                 }
2533                 $alternate ^= 1;
2534                 print "<td><i>$ref{'age'}</i></td>\n" .
2535                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2536                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2537                                -class => "list name"},esc_html($ref{'name'})) .
2538                       "</td>\n" .
2539                       "<td class=\"link\">" .
2540                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2541                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2542                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2543                       "</td>\n" .
2544                       "</tr>";
2545         }
2546         if (defined $extra) {
2547                 print "<tr>\n" .
2548                       "<td colspan=\"3\">$extra</td>\n" .
2549                       "</tr>\n";
2550         }
2551         print "</table>\n";
2552 }
2553
2554 ## ======================================================================
2555 ## ======================================================================
2556 ## actions
2557
2558 sub git_project_list {
2559         my $order = $cgi->param('o');
2560         if (defined $order && $order !~ m/project|descr|owner|age/) {
2561                 die_error(undef, "Unknown order parameter");
2562         }
2563
2564         my @list = git_get_projects_list();
2565         if (!@list) {
2566                 die_error(undef, "No projects found");
2567         }
2568
2569         git_header_html();
2570         if (-f $home_text) {
2571                 print "<div class=\"index_include\">\n";
2572                 open (my $fd, $home_text);
2573                 print <$fd>;
2574                 close $fd;
2575                 print "</div>\n";
2576         }
2577         git_project_list_body(\@list, $order);
2578         git_footer_html();
2579 }
2580
2581 sub git_forks {
2582         my $order = $cgi->param('o');
2583         if (defined $order && $order !~ m/project|descr|owner|age/) {
2584                 die_error(undef, "Unknown order parameter");
2585         }
2586
2587         my @list = git_get_projects_list($project);
2588         if (!@list) {
2589                 die_error(undef, "No forks found");
2590         }
2591
2592         git_header_html();
2593         git_print_page_nav('','');
2594         git_print_header_div('summary', "$project forks");
2595         git_project_list_body(\@list, $order);
2596         git_footer_html();
2597 }
2598
2599 sub git_project_index {
2600         my @projects = git_get_projects_list($project);
2601
2602         print $cgi->header(
2603                 -type => 'text/plain',
2604                 -charset => 'utf-8',
2605                 -content_disposition => 'inline; filename="index.aux"');
2606
2607         foreach my $pr (@projects) {
2608                 if (!exists $pr->{'owner'}) {
2609                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2610                 }
2611
2612                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2613                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2614                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2615                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2616                 $path  =~ s/ /\+/g;
2617                 $owner =~ s/ /\+/g;
2618
2619                 print "$path $owner\n";
2620         }
2621 }
2622
2623 sub git_summary {
2624         my $descr = git_get_project_description($project) || "none";
2625         my $head = git_get_head_hash($project);
2626         my %co = parse_commit($head);
2627         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2628
2629         my $owner = git_get_project_owner($project);
2630
2631         my $refs = git_get_references();
2632         my @taglist  = git_get_tags_list(15);
2633         my @headlist = git_get_heads_list(15);
2634         my @forklist;
2635         my ($check_forks) = gitweb_check_feature('forks');
2636
2637         if ($check_forks) {
2638                 @forklist = git_get_projects_list($project);
2639         }
2640
2641         git_header_html();
2642         git_print_page_nav('summary','', $head);
2643
2644         print "<div class=\"title\">&nbsp;</div>\n";
2645         print "<table cellspacing=\"0\">\n" .
2646               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2647               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2648               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2649         # use per project git URL list in $projectroot/$project/cloneurl
2650         # or make project git URL from git base URL and project name
2651         my $url_tag = "URL";
2652         my @url_list = git_get_project_url_list($project);
2653         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2654         foreach my $git_url (@url_list) {
2655                 next unless $git_url;
2656                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2657                 $url_tag = "";
2658         }
2659         print "</table>\n";
2660
2661         if (-s "$projectroot/$project/README.html") {
2662                 if (open my $fd, "$projectroot/$project/README.html") {
2663                         print "<div class=\"title\">readme</div>\n";
2664                         print $_ while (<$fd>);
2665                         close $fd;
2666                 }
2667         }
2668
2669         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2670                 git_get_head_hash($project), "--"
2671                 or die_error(undef, "Open git-rev-list failed");
2672         my @revlist = map { chomp; $_ } <$fd>;
2673         close $fd;
2674         git_print_header_div('shortlog');
2675         git_shortlog_body(\@revlist, 0, 15, $refs,
2676                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2677
2678         if (@taglist) {
2679                 git_print_header_div('tags');
2680                 git_tags_body(\@taglist, 0, 15,
2681                               $cgi->a({-href => href(action=>"tags")}, "..."));
2682         }
2683
2684         if (@headlist) {
2685                 git_print_header_div('heads');
2686                 git_heads_body(\@headlist, $head, 0, 15,
2687                                $cgi->a({-href => href(action=>"heads")}, "..."));
2688         }
2689
2690         if (@forklist) {
2691                 git_print_header_div('forks');
2692                 git_project_list_body(\@forklist, undef, 0, 15,
2693                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2694                                       'noheader');
2695         }
2696
2697         git_footer_html();
2698 }
2699
2700 sub git_tag {
2701         my $head = git_get_head_hash($project);
2702         git_header_html();
2703         git_print_page_nav('','', $head,undef,$head);
2704         my %tag = parse_tag($hash);
2705         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2706         print "<div class=\"title_text\">\n" .
2707               "<table cellspacing=\"0\">\n" .
2708               "<tr>\n" .
2709               "<td>object</td>\n" .
2710               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2711                                $tag{'object'}) . "</td>\n" .
2712               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2713                                               $tag{'type'}) . "</td>\n" .
2714               "</tr>\n";
2715         if (defined($tag{'author'})) {
2716                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2717                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2718                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2719                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2720                         "</td></tr>\n";
2721         }
2722         print "</table>\n\n" .
2723               "</div>\n";
2724         print "<div class=\"page_body\">";
2725         my $comment = $tag{'comment'};
2726         foreach my $line (@$comment) {
2727                 print esc_html($line) . "<br/>\n";
2728         }
2729         print "</div>\n";
2730         git_footer_html();
2731 }
2732
2733 sub git_blame2 {
2734         my $fd;
2735         my $ftype;
2736
2737         my ($have_blame) = gitweb_check_feature('blame');
2738         if (!$have_blame) {
2739                 die_error('403 Permission denied', "Permission denied");
2740         }
2741         die_error('404 Not Found', "File name not defined") if (!$file_name);
2742         $hash_base ||= git_get_head_hash($project);
2743         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2744         my %co = parse_commit($hash_base)
2745                 or die_error(undef, "Reading commit failed");
2746         if (!defined $hash) {
2747                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2748                         or die_error(undef, "Error looking up file");
2749         }
2750         $ftype = git_get_type($hash);
2751         if ($ftype !~ "blob") {
2752                 die_error("400 Bad Request", "Object is not a blob");
2753         }
2754         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2755               $file_name, $hash_base)
2756                 or die_error(undef, "Open git-blame failed");
2757         git_header_html();
2758         my $formats_nav =
2759                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2760                         "blob") .
2761                 " | " .
2762                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2763                         "history") .
2764                 " | " .
2765                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2766                         "HEAD");
2767         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2768         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2769         git_print_page_path($file_name, $ftype, $hash_base);
2770         my @rev_color = (qw(light2 dark2));
2771         my $num_colors = scalar(@rev_color);
2772         my $current_color = 0;
2773         my $last_rev;
2774         print <<HTML;
2775 <div class="page_body">
2776 <table class="blame">
2777 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2778 HTML
2779         my %metainfo = ();
2780         while (1) {
2781                 $_ = <$fd>;
2782                 last unless defined $_;
2783                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2784                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2785                 if (!exists $metainfo{$full_rev}) {
2786                         $metainfo{$full_rev} = {};
2787                 }
2788                 my $meta = $metainfo{$full_rev};
2789                 while (<$fd>) {
2790                         last if (s/^\t//);
2791                         if (/^(\S+) (.*)$/) {
2792                                 $meta->{$1} = $2;
2793                         }
2794                 }
2795                 my $data = $_;
2796                 my $rev = substr($full_rev, 0, 8);
2797                 my $author = $meta->{'author'};
2798                 my %date = parse_date($meta->{'author-time'},
2799                                       $meta->{'author-tz'});
2800                 my $date = $date{'iso-tz'};
2801                 if ($group_size) {
2802                         $current_color = ++$current_color % $num_colors;
2803                 }
2804                 print "<tr class=\"$rev_color[$current_color]\">\n";
2805                 if ($group_size) {
2806                         print "<td class=\"sha1\"";
2807                         print " title=\"". esc_html($author) . ", $date\"";
2808                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2809                         print ">";
2810                         print $cgi->a({-href => href(action=>"commit",
2811                                                      hash=>$full_rev,
2812                                                      file_name=>$file_name)},
2813                                       esc_html($rev));
2814                         print "</td>\n";
2815                 }
2816                 my $blamed = href(action => 'blame',
2817                                   file_name => $meta->{'filename'},
2818                                   hash_base => $full_rev);
2819                 print "<td class=\"linenr\">";
2820                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2821                                 -id => "l$lineno",
2822                                 -class => "linenr" },
2823                               esc_html($lineno));
2824                 print "</td>";
2825                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2826                 print "</tr>\n";
2827         }
2828         print "</table>\n";
2829         print "</div>";
2830         close $fd
2831                 or print "Reading blob failed\n";
2832         git_footer_html();
2833 }
2834
2835 sub git_blame {
2836         my $fd;
2837
2838         my ($have_blame) = gitweb_check_feature('blame');
2839         if (!$have_blame) {
2840                 die_error('403 Permission denied', "Permission denied");
2841         }
2842         die_error('404 Not Found', "File name not defined") if (!$file_name);
2843         $hash_base ||= git_get_head_hash($project);
2844         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2845         my %co = parse_commit($hash_base)
2846                 or die_error(undef, "Reading commit failed");
2847         if (!defined $hash) {
2848                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2849                         or die_error(undef, "Error lookup file");
2850         }
2851         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2852                 or die_error(undef, "Open git-annotate failed");
2853         git_header_html();
2854         my $formats_nav =
2855                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2856                         "blob") .
2857                 " | " .
2858                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2859                         "history") .
2860                 " | " .
2861                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2862                         "HEAD");
2863         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2864         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2865         git_print_page_path($file_name, 'blob', $hash_base);
2866         print "<div class=\"page_body\">\n";
2867         print <<HTML;
2868 <table class="blame">
2869   <tr>
2870     <th>Commit</th>
2871     <th>Age</th>
2872     <th>Author</th>
2873     <th>Line</th>
2874     <th>Data</th>
2875   </tr>
2876 HTML
2877         my @line_class = (qw(light dark));
2878         my $line_class_len = scalar (@line_class);
2879         my $line_class_num = $#line_class;
2880         while (my $line = <$fd>) {
2881                 my $long_rev;
2882                 my $short_rev;
2883                 my $author;
2884                 my $time;
2885                 my $lineno;
2886                 my $data;
2887                 my $age;
2888                 my $age_str;
2889                 my $age_class;
2890
2891                 chomp $line;
2892                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2893
2894                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2895                         $long_rev = $1;
2896                         $author   = $2;
2897                         $time     = $3;
2898                         $lineno   = $4;
2899                         $data     = $5;
2900                 } else {
2901                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2902                         next;
2903                 }
2904                 $short_rev  = substr ($long_rev, 0, 8);
2905                 $age        = time () - $time;
2906                 $age_str    = age_string ($age);
2907                 $age_str    =~ s/ /&nbsp;/g;
2908                 $age_class  = age_class($age);
2909                 $author     = esc_html ($author);
2910                 $author     =~ s/ /&nbsp;/g;
2911
2912                 $data = untabify($data);
2913                 $data = esc_html ($data);
2914
2915                 print <<HTML;
2916   <tr class="$line_class[$line_class_num]">
2917     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2918     <td class="$age_class">$age_str</td>
2919     <td>$author</td>
2920     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2921     <td class="pre">$data</td>
2922   </tr>
2923 HTML
2924         } # while (my $line = <$fd>)
2925         print "</table>\n\n";
2926         close $fd
2927                 or print "Reading blob failed.\n";
2928         print "</div>";
2929         git_footer_html();
2930 }
2931
2932 sub git_tags {
2933         my $head = git_get_head_hash($project);
2934         git_header_html();
2935         git_print_page_nav('','', $head,undef,$head);
2936         git_print_header_div('summary', $project);
2937
2938         my @tagslist = git_get_tags_list();
2939         if (@tagslist) {
2940                 git_tags_body(\@tagslist);
2941         }
2942         git_footer_html();
2943 }
2944
2945 sub git_heads {
2946         my $head = git_get_head_hash($project);
2947         git_header_html();
2948         git_print_page_nav('','', $head,undef,$head);
2949         git_print_header_div('summary', $project);
2950
2951         my @headslist = git_get_heads_list();
2952         if (@headslist) {
2953                 git_heads_body(\@headslist, $head);
2954         }
2955         git_footer_html();
2956 }
2957
2958 sub git_blob_plain {
2959         my $expires;
2960
2961         if (!defined $hash) {
2962                 if (defined $file_name) {
2963                         my $base = $hash_base || git_get_head_hash($project);
2964                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2965                                 or die_error(undef, "Error lookup file");
2966                 } else {
2967                         die_error(undef, "No file name defined");
2968                 }
2969         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2970                 # blobs defined by non-textual hash id's can be cached
2971                 $expires = "+1d";
2972         }
2973
2974         my $type = shift;
2975         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2976                 or die_error(undef, "Couldn't cat $file_name, $hash");
2977
2978         $type ||= blob_mimetype($fd, $file_name);
2979
2980         # save as filename, even when no $file_name is given
2981         my $save_as = "$hash";
2982         if (defined $file_name) {
2983                 $save_as = $file_name;
2984         } elsif ($type =~ m/^text\//) {
2985                 $save_as .= '.txt';
2986         }
2987
2988         print $cgi->header(
2989                 -type => "$type",
2990                 -expires=>$expires,
2991                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2992         undef $/;
2993         binmode STDOUT, ':raw';
2994         print <$fd>;
2995         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2996         $/ = "\n";
2997         close $fd;
2998 }
2999
3000 sub git_blob {
3001         my $expires;
3002
3003         if (!defined $hash) {
3004                 if (defined $file_name) {
3005                         my $base = $hash_base || git_get_head_hash($project);
3006                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3007                                 or die_error(undef, "Error lookup file");
3008                 } else {
3009                         die_error(undef, "No file name defined");
3010                 }
3011         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3012                 # blobs defined by non-textual hash id's can be cached
3013                 $expires = "+1d";
3014         }
3015
3016         my ($have_blame) = gitweb_check_feature('blame');
3017         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3018                 or die_error(undef, "Couldn't cat $file_name, $hash");
3019         my $mimetype = blob_mimetype($fd, $file_name);
3020         if ($mimetype !~ m/^text\//) {
3021                 close $fd;
3022                 return git_blob_plain($mimetype);
3023         }
3024         git_header_html(undef, $expires);
3025         my $formats_nav = '';
3026         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3027                 if (defined $file_name) {
3028                         if ($have_blame) {
3029                                 $formats_nav .=
3030                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3031                                                                hash=>$hash, file_name=>$file_name)},
3032                                                 "blame") .
3033                                         " | ";
3034                         }
3035                         $formats_nav .=
3036                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3037                                                        hash=>$hash, file_name=>$file_name)},
3038                                         "history") .
3039                                 " | " .
3040                                 $cgi->a({-href => href(action=>"blob_plain",
3041                                                        hash=>$hash, file_name=>$file_name)},
3042                                         "raw") .
3043                                 " | " .
3044                                 $cgi->a({-href => href(action=>"blob",
3045                                                        hash_base=>"HEAD", file_name=>$file_name)},
3046                                         "HEAD");
3047                 } else {
3048                         $formats_nav .=
3049                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3050                 }
3051                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3052                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3053         } else {
3054                 print "<div class=\"page_nav\">\n" .
3055                       "<br/><br/></div>\n" .
3056                       "<div class=\"title\">$hash</div>\n";
3057         }
3058         git_print_page_path($file_name, "blob", $hash_base);
3059         print "<div class=\"page_body\">\n";
3060         my $nr;
3061         while (my $line = <$fd>) {
3062                 chomp $line;
3063                 $nr++;
3064                 $line = untabify($line);
3065                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3066                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3067         }
3068         close $fd
3069                 or print "Reading blob failed.\n";
3070         print "</div>";
3071         git_footer_html();
3072 }
3073
3074 sub git_tree {
3075         my $have_snapshot = gitweb_have_snapshot();
3076
3077         if (!defined $hash_base) {
3078                 $hash_base = "HEAD";
3079         }
3080         if (!defined $hash) {
3081                 if (defined $file_name) {
3082                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3083                 } else {
3084                         $hash = $hash_base;
3085                 }
3086         }
3087         $/ = "\0";
3088         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3089                 or die_error(undef, "Open git-ls-tree failed");
3090         my @entries = map { chomp; $_ } <$fd>;
3091         close $fd or die_error(undef, "Reading tree failed");
3092         $/ = "\n";
3093
3094         my $refs = git_get_references();
3095         my $ref = format_ref_marker($refs, $hash_base);
3096         git_header_html();
3097         my $basedir = '';
3098         my ($have_blame) = gitweb_check_feature('blame');
3099         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3100                 my @views_nav = ();
3101                 if (defined $file_name) {
3102                         push @views_nav,
3103                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3104                                                        hash=>$hash, file_name=>$file_name)},
3105                                         "history"),
3106                                 $cgi->a({-href => href(action=>"tree",
3107                                                        hash_base=>"HEAD", file_name=>$file_name)},
3108                                         "HEAD"),
3109                 }
3110                 if ($have_snapshot) {
3111                         # FIXME: Should be available when we have no hash base as well.
3112                         push @views_nav,
3113                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3114                                         "snapshot");
3115                 }
3116                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3117                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3118         } else {
3119                 undef $hash_base;
3120                 print "<div class=\"page_nav\">\n";
3121                 print "<br/><br/></div>\n";
3122                 print "<div class=\"title\">$hash</div>\n";
3123         }
3124         if (defined $file_name) {
3125                 $basedir = $file_name;
3126                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3127                         $basedir .= '/';
3128                 }
3129         }
3130         git_print_page_path($file_name, 'tree', $hash_base);
3131         print "<div class=\"page_body\">\n";
3132         print "<table cellspacing=\"0\">\n";
3133         my $alternate = 1;
3134         # '..' (top directory) link if possible
3135         if (defined $hash_base &&
3136             defined $file_name && $file_name =~ m![^/]+$!) {
3137                 if ($alternate) {
3138                         print "<tr class=\"dark\">\n";
3139                 } else {
3140                         print "<tr class=\"light\">\n";
3141                 }
3142                 $alternate ^= 1;
3143
3144                 my $up = $file_name;
3145                 $up =~ s!/?[^/]+$!!;
3146                 undef $up unless $up;
3147                 # based on git_print_tree_entry
3148                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3149                 print '<td class="list">';
3150                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3151                                              file_name=>$up)},
3152                               "..");
3153                 print "</td>\n";
3154                 print "<td class=\"link\"></td>\n";
3155
3156                 print "</tr>\n";
3157         }
3158         foreach my $line (@entries) {
3159                 my %t = parse_ls_tree_line($line, -z => 1);
3160
3161                 if ($alternate) {
3162                         print "<tr class=\"dark\">\n";
3163                 } else {
3164                         print "<tr class=\"light\">\n";
3165                 }
3166                 $alternate ^= 1;
3167
3168                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3169
3170                 print "</tr>\n";
3171         }
3172         print "</table>\n" .
3173               "</div>";
3174         git_footer_html();
3175 }
3176
3177 sub git_snapshot {
3178         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3179         my $have_snapshot = (defined $ctype && defined $suffix);
3180         if (!$have_snapshot) {
3181                 die_error('403 Permission denied', "Permission denied");
3182         }
3183
3184         if (!defined $hash) {
3185                 $hash = git_get_head_hash($project);
3186         }
3187
3188         my $filename = basename($project) . "-$hash.tar.$suffix";
3189
3190         print $cgi->header(
3191                 -type => 'application/x-tar',
3192                 -content_encoding => $ctype,
3193                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3194                 -status => '200 OK');
3195
3196         my $git = git_cmd_str();
3197         my $name = $project;
3198         $name =~ s/\047/\047\\\047\047/g;
3199         open my $fd, "-|",
3200         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3201                 or die_error(undef, "Execute git-tar-tree failed.");
3202         binmode STDOUT, ':raw';
3203         print <$fd>;
3204         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3205         close $fd;
3206
3207 }
3208
3209 sub git_log {
3210         my $head = git_get_head_hash($project);
3211         if (!defined $hash) {
3212                 $hash = $head;
3213         }
3214         if (!defined $page) {
3215                 $page = 0;
3216         }
3217         my $refs = git_get_references();
3218
3219         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3220         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3221                 or die_error(undef, "Open git-rev-list failed");
3222         my @revlist = map { chomp; $_ } <$fd>;
3223         close $fd;
3224
3225         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3226
3227         git_header_html();
3228         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3229
3230         if (!@revlist) {
3231                 my %co = parse_commit($hash);
3232
3233                 git_print_header_div('summary', $project);
3234                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3235         }
3236         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3237                 my $commit = $revlist[$i];
3238                 my $ref = format_ref_marker($refs, $commit);
3239                 my %co = parse_commit($commit);
3240                 next if !%co;
3241                 my %ad = parse_date($co{'author_epoch'});
3242                 git_print_header_div('commit',
3243                                "<span class=\"age\">$co{'age_string'}</span>" .
3244                                esc_html($co{'title'}) . $ref,
3245                                $commit);
3246                 print "<div class=\"title_text\">\n" .
3247                       "<div class=\"log_link\">\n" .
3248                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3249                       " | " .
3250                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3251                       " | " .
3252                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3253                       "<br/>\n" .
3254                       "</div>\n" .
3255                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3256                       "</div>\n";
3257
3258                 print "<div class=\"log_body\">\n";
3259                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3260                 print "</div>\n";
3261         }
3262         git_footer_html();
3263 }
3264
3265 sub git_commit {
3266         my %co = parse_commit($hash);
3267         if (!%co) {
3268                 die_error(undef, "Unknown commit object");
3269         }
3270         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3271         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3272
3273         my $parent = $co{'parent'};
3274         if (!defined $parent) {
3275                 $parent = "--root";
3276         }
3277         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3278                 @diff_opts, $parent, $hash, "--"
3279                 or die_error(undef, "Open git-diff-tree failed");
3280         my @difftree = map { chomp; $_ } <$fd>;
3281         close $fd or die_error(undef, "Reading git-diff-tree failed");
3282
3283         # non-textual hash id's can be cached
3284         my $expires;
3285         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3286                 $expires = "+1d";
3287         }
3288         my $refs = git_get_references();
3289         my $ref = format_ref_marker($refs, $co{'id'});
3290
3291         my $have_snapshot = gitweb_have_snapshot();
3292
3293         my @views_nav = ();
3294         if (defined $file_name && defined $co{'parent'}) {
3295                 push @views_nav,
3296                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3297                                 "blame");
3298         }
3299         git_header_html(undef, $expires);
3300         git_print_page_nav('commit', '',
3301                            $hash, $co{'tree'}, $hash,
3302                            join (' | ', @views_nav));
3303
3304         if (defined $co{'parent'}) {
3305                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3306         } else {
3307                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3308         }
3309         print "<div class=\"title_text\">\n" .
3310               "<table cellspacing=\"0\">\n";
3311         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3312               "<tr>" .
3313               "<td></td><td> $ad{'rfc2822'}";
3314         if ($ad{'hour_local'} < 6) {
3315                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3316                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3317         } else {
3318                 printf(" (%02d:%02d %s)",
3319                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3320         }
3321         print "</td>" .
3322               "</tr>\n";
3323         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3324         print "<tr><td></td><td> $cd{'rfc2822'}" .
3325               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3326               "</td></tr>\n";
3327         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3328         print "<tr>" .
3329               "<td>tree</td>" .
3330               "<td class=\"sha1\">" .
3331               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3332                        class => "list"}, $co{'tree'}) .
3333               "</td>" .
3334               "<td class=\"link\">" .
3335               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3336                       "tree");
3337         if ($have_snapshot) {
3338                 print " | " .
3339                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3340         }
3341         print "</td>" .
3342               "</tr>\n";
3343         my $parents = $co{'parents'};
3344         foreach my $par (@$parents) {
3345                 print "<tr>" .
3346                       "<td>parent</td>" .
3347                       "<td class=\"sha1\">" .
3348                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3349                                class => "list"}, $par) .
3350                       "</td>" .
3351                       "<td class=\"link\">" .
3352                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3353                       " | " .
3354                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3355                       "</td>" .
3356                       "</tr>\n";
3357         }
3358         print "</table>".
3359               "</div>\n";
3360
3361         print "<div class=\"page_body\">\n";
3362         git_print_log($co{'comment'});
3363         print "</div>\n";
3364
3365         git_difftree_body(\@difftree, $hash, $parent);
3366
3367         git_footer_html();
3368 }
3369
3370 sub git_blobdiff {
3371         my $format = shift || 'html';
3372
3373         my $fd;
3374         my @difftree;
3375         my %diffinfo;
3376         my $expires;
3377
3378         # preparing $fd and %diffinfo for git_patchset_body
3379         # new style URI
3380         if (defined $hash_base && defined $hash_parent_base) {
3381                 if (defined $file_name) {
3382                         # read raw output
3383                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3384                                 $hash_parent_base, $hash_base,
3385                                 "--", $file_name
3386                                 or die_error(undef, "Open git-diff-tree failed");
3387                         @difftree = map { chomp; $_ } <$fd>;
3388                         close $fd
3389                                 or die_error(undef, "Reading git-diff-tree failed");
3390                         @difftree
3391                                 or die_error('404 Not Found', "Blob diff not found");
3392
3393                 } elsif (defined $hash &&
3394                          $hash =~ /[0-9a-fA-F]{40}/) {
3395                         # try to find filename from $hash
3396
3397                         # read filtered raw output
3398                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3399                                 $hash_parent_base, $hash_base, "--"
3400                                 or die_error(undef, "Open git-diff-tree failed");
3401                         @difftree =
3402                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3403                                 # $hash == to_id
3404                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3405                                 map { chomp; $_ } <$fd>;
3406                         close $fd
3407                                 or die_error(undef, "Reading git-diff-tree failed");
3408                         @difftree
3409                                 or die_error('404 Not Found', "Blob diff not found");
3410
3411                 } else {
3412                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3413                 }
3414
3415                 if (@difftree > 1) {
3416                         die_error('404 Not Found', "Ambiguous blob diff specification");
3417                 }
3418
3419                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3420                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3421                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3422
3423                 $hash_parent ||= $diffinfo{'from_id'};
3424                 $hash        ||= $diffinfo{'to_id'};
3425
3426                 # non-textual hash id's can be cached
3427                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3428                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3429                         $expires = '+1d';
3430                 }
3431
3432                 # open patch output
3433                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3434                         '-p', $hash_parent_base, $hash_base,
3435                         "--", $file_name
3436                         or die_error(undef, "Open git-diff-tree failed");
3437         }
3438
3439         # old/legacy style URI
3440         if (!%diffinfo && # if new style URI failed
3441             defined $hash && defined $hash_parent) {
3442                 # fake git-diff-tree raw output
3443                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3444                 $diffinfo{'from_id'} = $hash_parent;
3445                 $diffinfo{'to_id'}   = $hash;
3446                 if (defined $file_name) {
3447                         if (defined $file_parent) {
3448                                 $diffinfo{'status'} = '2';
3449                                 $diffinfo{'from_file'} = $file_parent;
3450                                 $diffinfo{'to_file'}   = $file_name;
3451                         } else { # assume not renamed
3452                                 $diffinfo{'status'} = '1';
3453                                 $diffinfo{'from_file'} = $file_name;
3454                                 $diffinfo{'to_file'}   = $file_name;
3455                         }
3456                 } else { # no filename given
3457                         $diffinfo{'status'} = '2';
3458                         $diffinfo{'from_file'} = $hash_parent;
3459                         $diffinfo{'to_file'}   = $hash;
3460                 }
3461
3462                 # non-textual hash id's can be cached
3463                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3464                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3465                         $expires = '+1d';
3466                 }
3467
3468                 # open patch output
3469                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3470                         $hash_parent, $hash, "--"
3471                         or die_error(undef, "Open git-diff failed");
3472         } else  {
3473                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3474                         unless %diffinfo;
3475         }
3476
3477         # header
3478         if ($format eq 'html') {
3479                 my $formats_nav =
3480                         $cgi->a({-href => href(action=>"blobdiff_plain",
3481                                                hash=>$hash, hash_parent=>$hash_parent,
3482                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3483                                                file_name=>$file_name, file_parent=>$file_parent)},
3484                                 "raw");
3485                 git_header_html(undef, $expires);
3486                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3487                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3488                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3489                 } else {
3490                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3491                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3492                 }
3493                 if (defined $file_name) {
3494                         git_print_page_path($file_name, "blob", $hash_base);
3495                 } else {
3496                         print "<div class=\"page_path\"></div>\n";
3497                 }
3498
3499         } elsif ($format eq 'plain') {
3500                 print $cgi->header(
3501                         -type => 'text/plain',
3502                         -charset => 'utf-8',
3503                         -expires => $expires,
3504                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3505
3506                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3507
3508         } else {
3509                 die_error(undef, "Unknown blobdiff format");
3510         }
3511
3512         # patch
3513         if ($format eq 'html') {
3514                 print "<div class=\"page_body\">\n";
3515
3516                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3517                 close $fd;
3518
3519                 print "</div>\n"; # class="page_body"
3520                 git_footer_html();
3521
3522         } else {
3523                 while (my $line = <$fd>) {
3524                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3525                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3526
3527                         print $line;
3528
3529                         last if $line =~ m!^\+\+\+!;
3530                 }
3531                 local $/ = undef;
3532                 print <$fd>;
3533                 close $fd;
3534         }
3535 }
3536
3537 sub git_blobdiff_plain {
3538         git_blobdiff('plain');
3539 }
3540
3541 sub git_commitdiff {
3542         my $format = shift || 'html';
3543         my %co = parse_commit($hash);
3544         if (!%co) {
3545                 die_error(undef, "Unknown commit object");
3546         }
3547
3548         # we need to prepare $formats_nav before any parameter munging
3549         my $formats_nav;
3550         if ($format eq 'html') {
3551                 $formats_nav =
3552                         $cgi->a({-href => href(action=>"commitdiff_plain",
3553                                                hash=>$hash, hash_parent=>$hash_parent)},
3554                                 "raw");
3555
3556                 if (defined $hash_parent) {
3557                         # commitdiff with two commits given
3558                         my $hash_parent_short = $hash_parent;
3559                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3560                                 $hash_parent_short = substr($hash_parent, 0, 7);
3561                         }
3562                         $formats_nav .=
3563                                 ' (from: ' .
3564                                 $cgi->a({-href => href(action=>"commitdiff",
3565                                                        hash=>$hash_parent)},
3566                                         esc_html($hash_parent_short)) .
3567                                 ')';
3568                 } elsif (!$co{'parent'}) {
3569                         # --root commitdiff
3570                         $formats_nav .= ' (initial)';
3571                 } elsif (scalar @{$co{'parents'}} == 1) {
3572                         # single parent commit
3573                         $formats_nav .=
3574                                 ' (parent: ' .
3575                                 $cgi->a({-href => href(action=>"commitdiff",
3576                                                        hash=>$co{'parent'})},
3577                                         esc_html(substr($co{'parent'}, 0, 7))) .
3578                                 ')';
3579                 } else {
3580                         # merge commit
3581                         $formats_nav .=
3582                                 ' (merge: ' .
3583                                 join(' ', map {
3584                                         $cgi->a({-href => href(action=>"commitdiff",
3585                                                                hash=>$_)},
3586                                                 esc_html(substr($_, 0, 7)));
3587                                 } @{$co{'parents'}} ) .
3588                                 ')';
3589                 }
3590         }
3591
3592         if (!defined $hash_parent) {
3593                 $hash_parent = $co{'parent'} || '--root';
3594         }
3595
3596         # read commitdiff
3597         my $fd;
3598         my @difftree;
3599         if ($format eq 'html') {
3600                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3601                         "--no-commit-id", "--patch-with-raw", "--full-index",
3602                         $hash_parent, $hash, "--"
3603                         or die_error(undef, "Open git-diff-tree failed");
3604
3605                 while (chomp(my $line = <$fd>)) {
3606                         # empty line ends raw part of diff-tree output
3607                         last unless $line;
3608                         push @difftree, $line;
3609                 }
3610
3611         } elsif ($format eq 'plain') {
3612                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3613                         '-p', $hash_parent, $hash, "--"
3614                         or die_error(undef, "Open git-diff-tree failed");
3615
3616         } else {
3617                 die_error(undef, "Unknown commitdiff format");
3618         }
3619
3620         # non-textual hash id's can be cached
3621         my $expires;
3622         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3623                 $expires = "+1d";
3624         }
3625
3626         # write commit message
3627         if ($format eq 'html') {
3628                 my $refs = git_get_references();
3629                 my $ref = format_ref_marker($refs, $co{'id'});
3630
3631                 git_header_html(undef, $expires);
3632                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3633                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3634                 git_print_authorship(\%co);
3635                 print "<div class=\"page_body\">\n";
3636                 if (@{$co{'comment'}} > 1) {
3637                         print "<div class=\"log\">\n";
3638                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3639                         print "</div>\n"; # class="log"
3640                 }
3641
3642         } elsif ($format eq 'plain') {
3643                 my $refs = git_get_references("tags");
3644                 my $tagname = git_get_rev_name_tags($hash);
3645                 my $filename = basename($project) . "-$hash.patch";
3646
3647                 print $cgi->header(
3648                         -type => 'text/plain',
3649                         -charset => 'utf-8',
3650                         -expires => $expires,
3651                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3652                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3653                 print <<TEXT;
3654 From: $co{'author'}
3655 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3656 Subject: $co{'title'}
3657 TEXT
3658                 print "X-Git-Tag: $tagname\n" if $tagname;
3659                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3660
3661                 foreach my $line (@{$co{'comment'}}) {
3662                         print "$line\n";
3663                 }
3664                 print "---\n\n";
3665         }
3666
3667         # write patch
3668         if ($format eq 'html') {
3669                 git_difftree_body(\@difftree, $hash, $hash_parent);
3670                 print "<br/>\n";
3671
3672                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3673                 close $fd;
3674                 print "</div>\n"; # class="page_body"
3675                 git_footer_html();
3676
3677         } elsif ($format eq 'plain') {
3678                 local $/ = undef;
3679                 print <$fd>;
3680                 close $fd
3681                         or print "Reading git-diff-tree failed\n";
3682         }
3683 }
3684
3685 sub git_commitdiff_plain {
3686         git_commitdiff('plain');
3687 }
3688
3689 sub git_history {
3690         if (!defined $hash_base) {
3691                 $hash_base = git_get_head_hash($project);
3692         }
3693         if (!defined $page) {
3694                 $page = 0;
3695         }
3696         my $ftype;
3697         my %co = parse_commit($hash_base);
3698         if (!%co) {
3699                 die_error(undef, "Unknown commit object");
3700         }
3701
3702         my $refs = git_get_references();
3703         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3704
3705         if (!defined $hash && defined $file_name) {
3706                 $hash = git_get_hash_by_path($hash_base, $file_name);
3707         }
3708         if (defined $hash) {
3709                 $ftype = git_get_type($hash);
3710         }
3711
3712         open my $fd, "-|",
3713                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3714                         or die_error(undef, "Open git-rev-list-failed");
3715         my @revlist = map { chomp; $_ } <$fd>;
3716         close $fd
3717                 or die_error(undef, "Reading git-rev-list failed");
3718
3719         my $paging_nav = '';
3720         if ($page > 0) {
3721                 $paging_nav .=
3722                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3723                                                file_name=>$file_name)},
3724                                 "first");
3725                 $paging_nav .= " &sdot; " .
3726                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3727                                                file_name=>$file_name, page=>$page-1),
3728                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3729         } else {
3730                 $paging_nav .= "first";
3731                 $paging_nav .= " &sdot; prev";
3732         }
3733         if ($#revlist >= (100 * ($page+1)-1)) {
3734                 $paging_nav .= " &sdot; " .
3735                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3736                                                file_name=>$file_name, page=>$page+1),
3737                                  -accesskey => "n", -title => "Alt-n"}, "next");
3738         } else {
3739                 $paging_nav .= " &sdot; next";
3740         }
3741         my $next_link = '';
3742         if ($#revlist >= (100 * ($page+1)-1)) {
3743                 $next_link =
3744                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3745                                                file_name=>$file_name, page=>$page+1),
3746                                  -title => "Alt-n"}, "next");
3747         }
3748
3749         git_header_html();
3750         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3751         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3752         git_print_page_path($file_name, $ftype, $hash_base);
3753
3754         git_history_body(\@revlist, ($page * 100), $#revlist,
3755                          $refs, $hash_base, $ftype, $next_link);
3756
3757         git_footer_html();
3758 }
3759
3760 sub git_search {
3761         if (!defined $searchtext) {
3762                 die_error(undef, "Text field empty");
3763         }
3764         if (!defined $hash) {
3765                 $hash = git_get_head_hash($project);
3766         }
3767         my %co = parse_commit($hash);
3768         if (!%co) {
3769                 die_error(undef, "Unknown commit object");
3770         }
3771
3772         $searchtype ||= 'commit';
3773         if ($searchtype eq 'pickaxe') {
3774                 # pickaxe may take all resources of your box and run for several minutes
3775                 # with every query - so decide by yourself how public you make this feature
3776                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3777                 if (!$have_pickaxe) {
3778                         die_error('403 Permission denied', "Permission denied");
3779                 }
3780         }
3781
3782         git_header_html();
3783         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3784         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3785
3786         print "<table cellspacing=\"0\">\n";
3787         my $alternate = 1;
3788         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3789                 $/ = "\0";
3790                 open my $fd, "-|", git_cmd(), "rev-list",
3791                         "--header", "--parents", $hash, "--"
3792                         or next;
3793                 while (my $commit_text = <$fd>) {
3794                         if (!grep m/$searchtext/i, $commit_text) {
3795                                 next;
3796                         }
3797                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3798                                 next;
3799                         }
3800                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3801                                 next;
3802                         }
3803                         my @commit_lines = split "\n", $commit_text;
3804                         my %co = parse_commit(undef, \@commit_lines);
3805                         if (!%co) {
3806                                 next;
3807                         }
3808                         if ($alternate) {
3809                                 print "<tr class=\"dark\">\n";
3810                         } else {
3811                                 print "<tr class=\"light\">\n";
3812                         }
3813                         $alternate ^= 1;
3814                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3815                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3816                               "<td>" .
3817                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3818                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3819                         my $comment = $co{'comment'};
3820                         foreach my $line (@$comment) {
3821                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3822                                         my $lead = esc_html($1) || "";
3823                                         $lead = chop_str($lead, 30, 10);
3824                                         my $match = esc_html($2) || "";
3825                                         my $trail = esc_html($3) || "";
3826                                         $trail = chop_str($trail, 30, 10);
3827                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3828                                         print chop_str($text, 80, 5) . "<br/>\n";
3829                                 }
3830                         }
3831                         print "</td>\n" .
3832                               "<td class=\"link\">" .
3833                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3834                               " | " .
3835                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3836                         print "</td>\n" .
3837                               "</tr>\n";
3838                 }
3839                 close $fd;
3840         }
3841
3842         if ($searchtype eq 'pickaxe') {
3843                 $/ = "\n";
3844                 my $git_command = git_cmd_str();
3845                 open my $fd, "-|", "$git_command rev-list $hash | " .
3846                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3847                 undef %co;
3848                 my @files;
3849                 while (my $line = <$fd>) {
3850                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3851                                 my %set;
3852                                 $set{'file'} = $6;
3853                                 $set{'from_id'} = $3;
3854                                 $set{'to_id'} = $4;
3855                                 $set{'id'} = $set{'to_id'};
3856                                 if ($set{'id'} =~ m/0{40}/) {
3857                                         $set{'id'} = $set{'from_id'};
3858                                 }
3859                                 if ($set{'id'} =~ m/0{40}/) {
3860                                         next;
3861                                 }
3862                                 push @files, \%set;
3863                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3864                                 if (%co) {
3865                                         if ($alternate) {
3866                                                 print "<tr class=\"dark\">\n";
3867                                         } else {
3868                                                 print "<tr class=\"light\">\n";
3869                                         }
3870                                         $alternate ^= 1;
3871                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3872                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3873                                               "<td>" .
3874                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3875                                                       -class => "list subject"},
3876                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3877                                         while (my $setref = shift @files) {
3878                                                 my %set = %$setref;
3879                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3880                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3881                                                               -class => "list"},
3882                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3883                                                       "<br/>\n";
3884                                         }
3885                                         print "</td>\n" .
3886                                               "<td class=\"link\">" .
3887                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3888                                               " | " .
3889                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3890                                         print "</td>\n" .
3891                                               "</tr>\n";
3892                                 }
3893                                 %co = parse_commit($1);
3894                         }
3895                 }
3896                 close $fd;
3897         }
3898         print "</table>\n";
3899         git_footer_html();
3900 }
3901
3902 sub git_search_help {
3903         git_header_html();
3904         git_print_page_nav('','', $hash,$hash,$hash);
3905         print <<EOT;
3906 <dl>
3907 <dt><b>commit</b></dt>
3908 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3909 <dt><b>author</b></dt>
3910 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3911 <dt><b>committer</b></dt>
3912 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3913 EOT
3914         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3915         if ($have_pickaxe) {
3916                 print <<EOT;
3917 <dt><b>pickaxe</b></dt>
3918 <dd>All commits that caused the string to appear or disappear from any file (changes that
3919 added, removed or "modified" the string) will be listed. This search can take a while and
3920 takes a lot of strain on the server, so please use it wisely.</dd>
3921 EOT
3922         }
3923         print "</dl>\n";
3924         git_footer_html();
3925 }
3926
3927 sub git_shortlog {
3928         my $head = git_get_head_hash($project);
3929         if (!defined $hash) {
3930                 $hash = $head;
3931         }
3932         if (!defined $page) {
3933                 $page = 0;
3934         }
3935         my $refs = git_get_references();
3936
3937         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3938         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3939                 or die_error(undef, "Open git-rev-list failed");
3940         my @revlist = map { chomp; $_ } <$fd>;
3941         close $fd;
3942
3943         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3944         my $next_link = '';
3945         if ($#revlist >= (100 * ($page+1)-1)) {
3946                 $next_link =
3947                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3948                                  -title => "Alt-n"}, "next");
3949         }
3950
3951
3952         git_header_html();
3953         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3954         git_print_header_div('summary', $project);
3955
3956         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3957
3958         git_footer_html();
3959 }
3960
3961 ## ......................................................................
3962 ## feeds (RSS, OPML)
3963
3964 sub git_rss {
3965         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3966         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
3967                 git_get_head_hash($project), "--"
3968                 or die_error(undef, "Open git-rev-list failed");
3969         my @revlist = map { chomp; $_ } <$fd>;
3970         close $fd or die_error(undef, "Reading git-rev-list failed");
3971         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3972         print <<XML;
3973 <?xml version="1.0" encoding="utf-8"?>
3974 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3975 <channel>
3976 <title>$project $my_uri $my_url</title>
3977 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3978 <description>$project log</description>
3979 <language>en</language>
3980 XML
3981
3982         for (my $i = 0; $i <= $#revlist; $i++) {
3983                 my $commit = $revlist[$i];
3984                 my %co = parse_commit($commit);
3985                 # we read 150, we always show 30 and the ones more recent than 48 hours
3986                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3987                         last;
3988                 }
3989                 my %cd = parse_date($co{'committer_epoch'});
3990                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3991                         $co{'parent'}, $co{'id'}, "--"
3992                         or next;
3993                 my @difftree = map { chomp; $_ } <$fd>;
3994                 close $fd
3995                         or next;
3996                 print "<item>\n" .
3997                       "<title>" .
3998                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3999                       "</title>\n" .
4000                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
4001                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4002                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
4003                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
4004                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
4005                       "<content:encoded>" .
4006                       "<![CDATA[\n";
4007                 my $comment = $co{'comment'};
4008                 foreach my $line (@$comment) {
4009                         $line = to_utf8($line);
4010                         print "$line<br/>\n";
4011                 }
4012                 print "<br/>\n";
4013                 foreach my $line (@difftree) {
4014                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
4015                                 next;
4016                         }
4017                         my $file = esc_html(unquote($7));
4018                         $file = to_utf8($file);
4019                         print "$file<br/>\n";
4020                 }
4021                 print "]]>\n" .
4022                       "</content:encoded>\n" .
4023                       "</item>\n";
4024         }
4025         print "</channel></rss>";
4026 }
4027
4028 sub git_opml {
4029         my @list = git_get_projects_list();
4030
4031         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4032         print <<XML;
4033 <?xml version="1.0" encoding="utf-8"?>
4034 <opml version="1.0">
4035 <head>
4036   <title>$site_name OPML Export</title>
4037 </head>
4038 <body>
4039 <outline text="git RSS feeds">
4040 XML
4041
4042         foreach my $pr (@list) {
4043                 my %proj = %$pr;
4044                 my $head = git_get_head_hash($proj{'path'});
4045                 if (!defined $head) {
4046                         next;
4047                 }
4048                 $git_dir = "$projectroot/$proj{'path'}";
4049                 my %co = parse_commit($head);
4050                 if (!%co) {
4051                         next;
4052                 }
4053
4054                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4055                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4056                 my $html = "$my_url?p=$proj{'path'};a=summary";
4057                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4058         }
4059         print <<XML;
4060 </outline>
4061 </body>
4062 </opml>
4063 XML
4064 }