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

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