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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # default order of projects list
  76 # valid values are none, project, descr, owner, and age
  77 our $default_projects_order = "project";
  78
  79 # show repository only if this file exists
  80 # (only effective if this variable evaluates to true)
  81 our $export_ok = "++GITWEB_EXPORT_OK++";
  82
  83 # only allow viewing of repositories also shown on the overview page
  84 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  85
  86 # list of git base URLs used for URL to where fetch project from,
  87 # i.e. full URL is "$git_base_url/$project"
  88 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  89
  90 # default blob_plain mimetype and default charset for text/plain blob
  91 our $default_blob_plain_mimetype = 'text/plain';
  92 our $default_text_plain_charset  = undef;
  93
  94 # file to use for guessing MIME types before trying /etc/mime.types
  95 # (relative to the current git repository)
  96 our $mimetypes_file = undef;
  97
  98 # You define site-wide feature defaults here; override them with
  99 # $GITWEB_CONFIG as necessary.
 100 our %feature = (
 101         # feature => {
 102         #       'sub' => feature-sub (subroutine),
 103         #       'override' => allow-override (boolean),
 104         #       'default' => [ default options...] (array reference)}
 105         #
 106         # if feature is overridable (it means that allow-override has true value,
 107         # then feature-sub will be called with default options as parameters;
 108         # return value of feature-sub indicates if to enable specified feature
 109         #
 110         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 111
 112         # Enable the 'blame' blob view, showing the last commit that modified
 113         # each line in the file. This can be very CPU-intensive.
 114
 115         # To enable system wide have in $GITWEB_CONFIG
 116         # $feature{'blame'}{'default'} = [1];
 117         # To have project specific config enable override in $GITWEB_CONFIG
 118         # $feature{'blame'}{'override'} = 1;
 119         # and in project config gitweb.blame = 0|1;
 120         'blame' => {
 121                 'sub' => \&feature_blame,
 122                 'override' => 0,
 123                 'default' => [0]},
 124
 125         # Enable the 'snapshot' link, providing a compressed tarball of any
 126         # tree. This can potentially generate high traffic if you have large
 127         # project.
 128
 129         # To disable system wide have in $GITWEB_CONFIG
 130         # $feature{'snapshot'}{'default'} = [undef];
 131         # To have project specific config enable override in $GITWEB_CONFIG
 132         # $feature{'snapshot'}{'override'} = 1;
 133         # and in project config gitweb.snapshot = none|gzip|bzip2;
 134         'snapshot' => {
 135                 'sub' => \&feature_snapshot,
 136                 'override' => 0,
 137                 #         => [content-encoding, suffix, program]
 138                 'default' => ['x-gzip', 'gz', 'gzip']},
 139
 140         # Enable text search, which will list the commits which match author,
 141         # committer or commit text to a given string.  Enabled by default.
 142         'search' => {
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Enable the pickaxe search, which will list the commits that modified
 147         # a given string in a file. This can be practical and quite faster
 148         # alternative to 'blame', but still potentially CPU-intensive.
 149
 150         # To enable system wide have in $GITWEB_CONFIG
 151         # $feature{'pickaxe'}{'default'} = [1];
 152         # To have project specific config enable override in $GITWEB_CONFIG
 153         # $feature{'pickaxe'}{'override'} = 1;
 154         # and in project config gitweb.pickaxe = 0|1;
 155         'pickaxe' => {
 156                 'sub' => \&feature_pickaxe,
 157                 'override' => 0,
 158                 'default' => [1]},
 159
 160         # Make gitweb use an alternative format of the URLs which can be
 161         # more readable and natural-looking: project name is embedded
 162         # directly in the path and the query string contains other
 163         # auxiliary information. All gitweb installations recognize
 164         # URL in either format; this configures in which formats gitweb
 165         # generates links.
 166
 167         # To enable system wide have in $GITWEB_CONFIG
 168         # $feature{'pathinfo'}{'default'} = [1];
 169         # Project specific override is not supported.
 170
 171         # Note that you will need to change the default location of CSS,
 172         # favicon, logo and possibly other files to an absolute URL. Also,
 173         # if gitweb.cgi serves as your indexfile, you will need to force
 174         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 175         'pathinfo' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178
 179         # Make gitweb consider projects in project root subdirectories
 180         # to be forks of existing projects. Given project $projname.git,
 181         # projects matching $projname/*.git will not be shown in the main
 182         # projects list, instead a '+' mark will be added to $projname
 183         # there and a 'forks' view will be enabled for the project, listing
 184         # all the forks. If project list is taken from a file, forks have
 185         # to be listed after the main project.
 186
 187         # To enable system wide have in $GITWEB_CONFIG
 188         # $feature{'forks'}{'default'} = [1];
 189         # Project specific override is not supported.
 190         'forks' => {
 191                 'override' => 0,
 192                 'default' => [0]},
 193 );
 194
 195 sub gitweb_check_feature {
 196         my ($name) = @_;
 197         return unless exists $feature{$name};
 198         my ($sub, $override, @defaults) = (
 199                 $feature{$name}{'sub'},
 200                 $feature{$name}{'override'},
 201                 @{$feature{$name}{'default'}});
 202         if (!$override) { return @defaults; }
 203         if (!defined $sub) {
 204                 warn "feature $name is not overrideable";
 205                 return @defaults;
 206         }
 207         return $sub->(@defaults);
 208 }
 209
 210 sub feature_blame {
 211         my ($val) = git_get_project_config('blame', '--bool');
 212
 213         if ($val eq 'true') {
 214                 return 1;
 215         } elsif ($val eq 'false') {
 216                 return 0;
 217         }
 218
 219         return $_[0];
 220 }
 221
 222 sub feature_snapshot {
 223         my ($ctype, $suffix, $command) = @_;
 224
 225         my ($val) = git_get_project_config('snapshot');
 226
 227         if ($val eq 'gzip') {
 228                 return ('x-gzip', 'gz', 'gzip');
 229         } elsif ($val eq 'bzip2') {
 230                 return ('x-bzip2', 'bz2', 'bzip2');
 231         } elsif ($val eq 'none') {
 232                 return ();
 233         }
 234
 235         return ($ctype, $suffix, $command);
 236 }
 237
 238 sub gitweb_have_snapshot {
 239         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 240         my $have_snapshot = (defined $ctype && defined $suffix);
 241
 242         return $have_snapshot;
 243 }
 244
 245 sub feature_pickaxe {
 246         my ($val) = git_get_project_config('pickaxe', '--bool');
 247
 248         if ($val eq 'true') {
 249                 return (1);
 250         } elsif ($val eq 'false') {
 251                 return (0);
 252         }
 253
 254         return ($_[0]);
 255 }
 256
 257 # checking HEAD file with -e is fragile if the repository was
 258 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 259 # and then pruned.
 260 sub check_head_link {
 261         my ($dir) = @_;
 262         my $headfile = "$dir/HEAD";
 263         return ((-e $headfile) ||
 264                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 265 }
 266
 267 sub check_export_ok {
 268         my ($dir) = @_;
 269         return (check_head_link($dir) &&
 270                 (!$export_ok || -e "$dir/$export_ok"));
 271 }
 272
 273 # rename detection options for git-diff and git-diff-tree
 274 # - default is '-M', with the cost proportional to
 275 #   (number of removed files) * (number of new files).
 276 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 277 #   (number of changed files + number of removed files) * (number of new files)
 278 # - even more costly is '-C', '--find-copies-harder' with cost
 279 #   (number of files in the original tree) * (number of new files)
 280 # - one might want to include '-B' option, e.g. '-B', '-M'
 281 our @diff_opts = ('-M'); # taken from git_commit
 282
 283 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 284 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 285
 286 # version of the core git binary
 287 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 288
 289 $projects_list ||= $projectroot;
 290
 291 # ======================================================================
 292 # input validation and dispatch
 293 our $action = $cgi->param('a');
 294 if (defined $action) {
 295         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 296                 die_error(undef, "Invalid action parameter");
 297         }
 298 }
 299
 300 # parameters which are pathnames
 301 our $project = $cgi->param('p');
 302 if (defined $project) {
 303         if (!validate_pathname($project) ||
 304             !(-d "$projectroot/$project") ||
 305             !check_head_link("$projectroot/$project") ||
 306             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 307             ($strict_export && !project_in_list($project))) {
 308                 undef $project;
 309                 die_error(undef, "No such project");
 310         }
 311 }
 312
 313 our $file_name = $cgi->param('f');
 314 if (defined $file_name) {
 315         if (!validate_pathname($file_name)) {
 316                 die_error(undef, "Invalid file parameter");
 317         }
 318 }
 319
 320 our $file_parent = $cgi->param('fp');
 321 if (defined $file_parent) {
 322         if (!validate_pathname($file_parent)) {
 323                 die_error(undef, "Invalid file parent parameter");
 324         }
 325 }
 326
 327 # parameters which are refnames
 328 our $hash = $cgi->param('h');
 329 if (defined $hash) {
 330         if (!validate_refname($hash)) {
 331                 die_error(undef, "Invalid hash parameter");
 332         }
 333 }
 334
 335 our $hash_parent = $cgi->param('hp');
 336 if (defined $hash_parent) {
 337         if (!validate_refname($hash_parent)) {
 338                 die_error(undef, "Invalid hash parent parameter");
 339         }
 340 }
 341
 342 our $hash_base = $cgi->param('hb');
 343 if (defined $hash_base) {
 344         if (!validate_refname($hash_base)) {
 345                 die_error(undef, "Invalid hash base parameter");
 346         }
 347 }
 348
 349 our $hash_parent_base = $cgi->param('hpb');
 350 if (defined $hash_parent_base) {
 351         if (!validate_refname($hash_parent_base)) {
 352                 die_error(undef, "Invalid hash parent base parameter");
 353         }
 354 }
 355
 356 # other parameters
 357 our $page = $cgi->param('pg');
 358 if (defined $page) {
 359         if ($page =~ m/[^0-9]/) {
 360                 die_error(undef, "Invalid page parameter");
 361         }
 362 }
 363
 364 our $searchtext = $cgi->param('s');
 365 if (defined $searchtext) {
 366         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 367                 die_error(undef, "Invalid search parameter");
 368         }
 369         if (length($searchtext) < 2) {
 370                 die_error(undef, "At least two characters are required for search parameter");
 371         }
 372         $searchtext = quotemeta $searchtext;
 373 }
 374
 375 our $searchtype = $cgi->param('st');
 376 if (defined $searchtype) {
 377         if ($searchtype =~ m/[^a-z]/) {
 378                 die_error(undef, "Invalid searchtype parameter");
 379         }
 380 }
 381
 382 # now read PATH_INFO and use it as alternative to parameters
 383 sub evaluate_path_info {
 384         return if defined $project;
 385         my $path_info = $ENV{"PATH_INFO"};
 386         return if !$path_info;
 387         $path_info =~ s,^/+,,;
 388         return if !$path_info;
 389         # find which part of PATH_INFO is project
 390         $project = $path_info;
 391         $project =~ s,/+$,,;
 392         while ($project && !check_head_link("$projectroot/$project")) {
 393                 $project =~ s,/*[^/]*$,,;
 394         }
 395         # validate project
 396         $project = validate_pathname($project);
 397         if (!$project ||
 398             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 399             ($strict_export && !project_in_list($project))) {
 400                 undef $project;
 401                 return;
 402         }
 403         # do not change any parameters if an action is given using the query string
 404         return if $action;
 405         $path_info =~ s,^$project/*,,;
 406         my ($refname, $pathname) = split(/:/, $path_info, 2);
 407         if (defined $pathname) {
 408                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 409                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 410                 $pathname =~ s,^/+,,;
 411                 if (!$pathname || substr($pathname, -1) eq "/") {
 412                         $action  ||= "tree";
 413                         $pathname =~ s,/$,,;
 414                 } else {
 415                         $action  ||= "blob_plain";
 416                 }
 417                 $hash_base ||= validate_refname($refname);
 418                 $file_name ||= validate_pathname($pathname);
 419         } elsif (defined $refname) {
 420                 # we got "project.git/branch"
 421                 $action ||= "shortlog";
 422                 $hash   ||= validate_refname($refname);
 423         }
 424 }
 425 evaluate_path_info();
 426
 427 # path to the current git repository
 428 our $git_dir;
 429 $git_dir = "$projectroot/$project" if $project;
 430
 431 # dispatch
 432 my %actions = (
 433         "blame" => \&git_blame2,
 434         "blobdiff" => \&git_blobdiff,
 435         "blobdiff_plain" => \&git_blobdiff_plain,
 436         "blob" => \&git_blob,
 437         "blob_plain" => \&git_blob_plain,
 438         "commitdiff" => \&git_commitdiff,
 439         "commitdiff_plain" => \&git_commitdiff_plain,
 440         "commit" => \&git_commit,
 441         "forks" => \&git_forks,
 442         "heads" => \&git_heads,
 443         "history" => \&git_history,
 444         "log" => \&git_log,
 445         "rss" => \&git_rss,
 446         "atom" => \&git_atom,
 447         "search" => \&git_search,
 448         "search_help" => \&git_search_help,
 449         "shortlog" => \&git_shortlog,
 450         "summary" => \&git_summary,
 451         "tag" => \&git_tag,
 452         "tags" => \&git_tags,
 453         "tree" => \&git_tree,
 454         "snapshot" => \&git_snapshot,
 455         "object" => \&git_object,
 456         # those below don't need $project
 457         "opml" => \&git_opml,
 458         "project_list" => \&git_project_list,
 459         "project_index" => \&git_project_index,
 460 );
 461
 462 if (!defined $action) {
 463         if (defined $hash) {
 464                 $action = git_get_type($hash);
 465         } elsif (defined $hash_base && defined $file_name) {
 466                 $action = git_get_type("$hash_base:$file_name");
 467         } elsif (defined $project) {
 468                 $action = 'summary';
 469         } else {
 470                 $action = 'project_list';
 471         }
 472 }
 473 if (!defined($actions{$action})) {
 474         die_error(undef, "Unknown action");
 475 }
 476 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 477     !$project) {
 478         die_error(undef, "Project needed");
 479 }
 480 $actions{$action}->();
 481 exit;
 482
 483 ## ======================================================================
 484 ## action links
 485
 486 sub href(%) {
 487         my %params = @_;
 488         # default is to use -absolute url() i.e. $my_uri
 489         my $href = $params{-full} ? $my_url : $my_uri;
 490
 491         # XXX: Warning: If you touch this, check the search form for updating,
 492         # too.
 493
 494         my @mapping = (
 495                 project => "p",
 496                 action => "a",
 497                 file_name => "f",
 498                 file_parent => "fp",
 499                 hash => "h",
 500                 hash_parent => "hp",
 501                 hash_base => "hb",
 502                 hash_parent_base => "hpb",
 503                 page => "pg",
 504                 order => "o",
 505                 searchtext => "s",
 506                 searchtype => "st",
 507         );
 508         my %mapping = @mapping;
 509
 510         $params{'project'} = $project unless exists $params{'project'};
 511
 512         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 513         if ($use_pathinfo) {
 514                 # use PATH_INFO for project name
 515                 $href .= "/$params{'project'}" if defined $params{'project'};
 516                 delete $params{'project'};
 517
 518                 # Summary just uses the project path URL
 519                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 520                         delete $params{'action'};
 521                 }
 522         }
 523
 524         # now encode the parameters explicitly
 525         my @result = ();
 526         for (my $i = 0; $i < @mapping; $i += 2) {
 527                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 528                 if (defined $params{$name}) {
 529                         push @result, $symbol . "=" . esc_param($params{$name});
 530                 }
 531         }
 532         $href .= "?" . join(';', @result) if scalar @result;
 533
 534         return $href;
 535 }
 536
 537
 538 ## ======================================================================
 539 ## validation, quoting/unquoting and escaping
 540
 541 sub validate_pathname {
 542         my $input = shift || return undef;
 543
 544         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 545         # at the beginning, at the end, and between slashes.
 546         # also this catches doubled slashes
 547         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 548                 return undef;
 549         }
 550         # no null characters
 551         if ($input =~ m!\0!) {
 552                 return undef;
 553         }
 554         return $input;
 555 }
 556
 557 sub validate_refname {
 558         my $input = shift || return undef;
 559
 560         # textual hashes are O.K.
 561         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 562                 return $input;
 563         }
 564         # it must be correct pathname
 565         $input = validate_pathname($input)
 566                 or return undef;
 567         # restrictions on ref name according to git-check-ref-format
 568         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 569                 return undef;
 570         }
 571         return $input;
 572 }
 573
 574 # quote unsafe chars, but keep the slash, even when it's not
 575 # correct, but quoted slashes look too horrible in bookmarks
 576 sub esc_param {
 577         my $str = shift;
 578         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 579         $str =~ s/\+/%2B/g;
 580         $str =~ s/ /\+/g;
 581         return $str;
 582 }
 583
 584 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 585 sub esc_url {
 586         my $str = shift;
 587         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 588         $str =~ s/\+/%2B/g;
 589         $str =~ s/ /\+/g;
 590         return $str;
 591 }
 592
 593 # replace invalid utf8 character with SUBSTITUTION sequence
 594 sub esc_html ($;%) {
 595         my $str = shift;
 596         my %opts = @_;
 597
 598         $str = decode_utf8($str);
 599         $str = $cgi->escapeHTML($str);
 600         if ($opts{'-nbsp'}) {
 601                 $str =~ s/ /&nbsp;/g;
 602         }
 603         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 604         return $str;
 605 }
 606
 607 # quote control characters and escape filename to HTML
 608 sub esc_path {
 609         my $str = shift;
 610         my %opts = @_;
 611
 612         $str = decode_utf8($str);
 613         $str = $cgi->escapeHTML($str);
 614         if ($opts{'-nbsp'}) {
 615                 $str =~ s/ /&nbsp;/g;
 616         }
 617         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 618         return $str;
 619 }
 620
 621 # Make control characters "printable", using character escape codes (CEC)
 622 sub quot_cec {
 623         my $cntrl = shift;
 624         my %es = ( # character escape codes, aka escape sequences
 625                    "\t" => '\t',   # tab            (HT)
 626                    "\n" => '\n',   # line feed      (LF)
 627                    "\r" => '\r',   # carrige return (CR)
 628                    "\f" => '\f',   # form feed      (FF)
 629                    "\b" => '\b',   # backspace      (BS)
 630                    "\a" => '\a',   # alarm (bell)   (BEL)
 631                    "\e" => '\e',   # escape         (ESC)
 632                    "\013" => '\v', # vertical tab   (VT)
 633                    "\000" => '\0', # nul character  (NUL)
 634                    );
 635         my $chr = ( (exists $es{$cntrl})
 636                     ? $es{$cntrl}
 637                     : sprintf('\%03o', ord($cntrl)) );
 638         return "<span class=\"cntrl\">$chr</span>";
 639 }
 640
 641 # Alternatively use unicode control pictures codepoints,
 642 # Unicode "printable representation" (PR)
 643 sub quot_upr {
 644         my $cntrl = shift;
 645         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 646         return "<span class=\"cntrl\">$chr</span>";
 647 }
 648
 649 # git may return quoted and escaped filenames
 650 sub unquote {
 651         my $str = shift;
 652
 653         sub unq {
 654                 my $seq = shift;
 655                 my %es = ( # character escape codes, aka escape sequences
 656                         't' => "\t",   # tab            (HT, TAB)
 657                         'n' => "\n",   # newline        (NL)
 658                         'r' => "\r",   # return         (CR)
 659                         'f' => "\f",   # form feed      (FF)
 660                         'b' => "\b",   # backspace      (BS)
 661                         'a' => "\a",   # alarm (bell)   (BEL)
 662                         'e' => "\e",   # escape         (ESC)
 663                         'v' => "\013", # vertical tab   (VT)
 664                 );
 665
 666                 if ($seq =~ m/^[0-7]{1,3}$/) {
 667                         # octal char sequence
 668                         return chr(oct($seq));
 669                 } elsif (exists $es{$seq}) {
 670                         # C escape sequence, aka character escape code
 671                         return $es{$seq}
 672                 }
 673                 # quoted ordinary character
 674                 return $seq;
 675         }
 676
 677         if ($str =~ m/^"(.*)"$/) {
 678                 # needs unquoting
 679                 $str = $1;
 680                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 681         }
 682         return $str;
 683 }
 684
 685 # escape tabs (convert tabs to spaces)
 686 sub untabify {
 687         my $line = shift;
 688
 689         while ((my $pos = index($line, "\t")) != -1) {
 690                 if (my $count = (8 - ($pos % 8))) {
 691                         my $spaces = ' ' x $count;
 692                         $line =~ s/\t/$spaces/;
 693                 }
 694         }
 695
 696         return $line;
 697 }
 698
 699 sub project_in_list {
 700         my $project = shift;
 701         my @list = git_get_projects_list();
 702         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 703 }
 704
 705 ## ----------------------------------------------------------------------
 706 ## HTML aware string manipulation
 707
 708 sub chop_str {
 709         my $str = shift;
 710         my $len = shift;
 711         my $add_len = shift || 10;
 712
 713         # allow only $len chars, but don't cut a word if it would fit in $add_len
 714         # if it doesn't fit, cut it if it's still longer than the dots we would add
 715         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 716         my $body = $1;
 717         my $tail = $2;
 718         if (length($tail) > 4) {
 719                 $tail = " ...";
 720                 $body =~ s/&[^;]*$//; # remove chopped character entities
 721         }
 722         return "$body$tail";
 723 }
 724
 725 ## ----------------------------------------------------------------------
 726 ## functions returning short strings
 727
 728 # CSS class for given age value (in seconds)
 729 sub age_class {
 730         my $age = shift;
 731
 732         if ($age < 60*60*2) {
 733                 return "age0";
 734         } elsif ($age < 60*60*24*2) {
 735                 return "age1";
 736         } else {
 737                 return "age2";
 738         }
 739 }
 740
 741 # convert age in seconds to "nn units ago" string
 742 sub age_string {
 743         my $age = shift;
 744         my $age_str;
 745
 746         if ($age > 60*60*24*365*2) {
 747                 $age_str = (int $age/60/60/24/365);
 748                 $age_str .= " years ago";
 749         } elsif ($age > 60*60*24*(365/12)*2) {
 750                 $age_str = int $age/60/60/24/(365/12);
 751                 $age_str .= " months ago";
 752         } elsif ($age > 60*60*24*7*2) {
 753                 $age_str = int $age/60/60/24/7;
 754                 $age_str .= " weeks ago";
 755         } elsif ($age > 60*60*24*2) {
 756                 $age_str = int $age/60/60/24;
 757                 $age_str .= " days ago";
 758         } elsif ($age > 60*60*2) {
 759                 $age_str = int $age/60/60;
 760                 $age_str .= " hours ago";
 761         } elsif ($age > 60*2) {
 762                 $age_str = int $age/60;
 763                 $age_str .= " min ago";
 764         } elsif ($age > 2) {
 765                 $age_str = int $age;
 766                 $age_str .= " sec ago";
 767         } else {
 768                 $age_str .= " right now";
 769         }
 770         return $age_str;
 771 }
 772
 773 # convert file mode in octal to symbolic file mode string
 774 sub mode_str {
 775         my $mode = oct shift;
 776
 777         if (S_ISDIR($mode & S_IFMT)) {
 778                 return 'drwxr-xr-x';
 779         } elsif (S_ISLNK($mode)) {
 780                 return 'lrwxrwxrwx';
 781         } elsif (S_ISREG($mode)) {
 782                 # git cares only about the executable bit
 783                 if ($mode & S_IXUSR) {
 784                         return '-rwxr-xr-x';
 785                 } else {
 786                         return '-rw-r--r--';
 787                 };
 788         } else {
 789                 return '----------';
 790         }
 791 }
 792
 793 # convert file mode in octal to file type string
 794 sub file_type {
 795         my $mode = shift;
 796
 797         if ($mode !~ m/^[0-7]+$/) {
 798                 return $mode;
 799         } else {
 800                 $mode = oct $mode;
 801         }
 802
 803         if (S_ISDIR($mode & S_IFMT)) {
 804                 return "directory";
 805         } elsif (S_ISLNK($mode)) {
 806                 return "symlink";
 807         } elsif (S_ISREG($mode)) {
 808                 return "file";
 809         } else {
 810                 return "unknown";
 811         }
 812 }
 813
 814 # convert file mode in octal to file type description string
 815 sub file_type_long {
 816         my $mode = shift;
 817
 818         if ($mode !~ m/^[0-7]+$/) {
 819                 return $mode;
 820         } else {
 821                 $mode = oct $mode;
 822         }
 823
 824         if (S_ISDIR($mode & S_IFMT)) {
 825                 return "directory";
 826         } elsif (S_ISLNK($mode)) {
 827                 return "symlink";
 828         } elsif (S_ISREG($mode)) {
 829                 if ($mode & S_IXUSR) {
 830                         return "executable";
 831                 } else {
 832                         return "file";
 833                 };
 834         } else {
 835                 return "unknown";
 836         }
 837 }
 838
 839
 840 ## ----------------------------------------------------------------------
 841 ## functions returning short HTML fragments, or transforming HTML fragments
 842 ## which don't belong to other sections
 843
 844 # format line of commit message.
 845 sub format_log_line_html {
 846         my $line = shift;
 847
 848         $line = esc_html($line, -nbsp=>1);
 849         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 850                 my $hash_text = $1;
 851                 my $link =
 852                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 853                                 -class => "text"}, $hash_text);
 854                 $line =~ s/$hash_text/$link/;
 855         }
 856         return $line;
 857 }
 858
 859 # format marker of refs pointing to given object
 860 sub format_ref_marker {
 861         my ($refs, $id) = @_;
 862         my $markers = '';
 863
 864         if (defined $refs->{$id}) {
 865                 foreach my $ref (@{$refs->{$id}}) {
 866                         my ($type, $name) = qw();
 867                         # e.g. tags/v2.6.11 or heads/next
 868                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 869                                 $type = $1;
 870                                 $name = $2;
 871                         } else {
 872                                 $type = "ref";
 873                                 $name = $ref;
 874                         }
 875
 876                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 877                                     esc_html($name) . "</span>";
 878                 }
 879         }
 880
 881         if ($markers) {
 882                 return ' <span class="refs">'. $markers . '</span>';
 883         } else {
 884                 return "";
 885         }
 886 }
 887
 888 # format, perhaps shortened and with markers, title line
 889 sub format_subject_html {
 890         my ($long, $short, $href, $extra) = @_;
 891         $extra = '' unless defined($extra);
 892
 893         if (length($short) < length($long)) {
 894                 return $cgi->a({-href => $href, -class => "list subject",
 895                                 -title => decode_utf8($long)},
 896                        esc_html($short) . $extra);
 897         } else {
 898                 return $cgi->a({-href => $href, -class => "list subject"},
 899                        esc_html($long)  . $extra);
 900         }
 901 }
 902
 903 # format patch (diff) line (rather not to be used for diff headers)
 904 sub format_diff_line {
 905         my $line = shift;
 906         my ($from, $to) = @_;
 907         my $diff_class = "";
 908
 909         chomp $line;
 910
 911         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 912                 # combined diff
 913                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 914                 if ($line =~ m/^\@{3}/) {
 915                         $diff_class = " chunk_header";
 916                 } elsif ($line =~ m/^\\/) {
 917                         $diff_class = " incomplete";
 918                 } elsif ($prefix =~ tr/+/+/) {
 919                         $diff_class = " add";
 920                 } elsif ($prefix =~ tr/-/-/) {
 921                         $diff_class = " rem";
 922                 }
 923         } else {
 924                 # assume ordinary diff
 925                 my $char = substr($line, 0, 1);
 926                 if ($char eq '+') {
 927                         $diff_class = " add";
 928                 } elsif ($char eq '-') {
 929                         $diff_class = " rem";
 930                 } elsif ($char eq '@') {
 931                         $diff_class = " chunk_header";
 932                 } elsif ($char eq "\\") {
 933                         $diff_class = " incomplete";
 934                 }
 935         }
 936         $line = untabify($line);
 937         if ($from && $to && $line =~ m/^\@{2} /) {
 938                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 939                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 940
 941                 $from_lines = 0 unless defined $from_lines;
 942                 $to_lines   = 0 unless defined $to_lines;
 943
 944                 if ($from->{'href'}) {
 945                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 946                                              -class=>"list"}, $from_text);
 947                 }
 948                 if ($to->{'href'}) {
 949                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 950                                              -class=>"list"}, $to_text);
 951                 }
 952                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 953                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 954                 return "<div class=\"diff$diff_class\">$line</div>\n";
 955         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 956                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 957                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 958
 959                 @from_text = split(' ', $ranges);
 960                 for (my $i = 0; $i < @from_text; ++$i) {
 961                         ($from_start[$i], $from_nlines[$i]) =
 962                                 (split(',', substr($from_text[$i], 1)), 0);
 963                 }
 964
 965                 $to_text   = pop @from_text;
 966                 $to_start  = pop @from_start;
 967                 $to_nlines = pop @from_nlines;
 968
 969                 $line = "<span class=\"chunk_info\">$prefix ";
 970                 for (my $i = 0; $i < @from_text; ++$i) {
 971                         if ($from->{'href'}[$i]) {
 972                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 973                                                   -class=>"list"}, $from_text[$i]);
 974                         } else {
 975                                 $line .= $from_text[$i];
 976                         }
 977                         $line .= " ";
 978                 }
 979                 if ($to->{'href'}) {
 980                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 981                                           -class=>"list"}, $to_text);
 982                 } else {
 983                         $line .= $to_text;
 984                 }
 985                 $line .= " $prefix</span>" .
 986                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 987                 return "<div class=\"diff$diff_class\">$line</div>\n";
 988         }
 989         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 990 }
 991
 992 ## ----------------------------------------------------------------------
 993 ## git utility subroutines, invoking git commands
 994
 995 # returns path to the core git executable and the --git-dir parameter as list
 996 sub git_cmd {
 997         return $GIT, '--git-dir='.$git_dir;
 998 }
 999
1000 # returns path to the core git executable and the --git-dir parameter as string
1001 sub git_cmd_str {
1002         return join(' ', git_cmd());
1003 }
1004
1005 # get HEAD ref of given project as hash
1006 sub git_get_head_hash {
1007         my $project = shift;
1008         my $o_git_dir = $git_dir;
1009         my $retval = undef;
1010         $git_dir = "$projectroot/$project";
1011         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1012                 my $head = <$fd>;
1013                 close $fd;
1014                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1015                         $retval = $1;
1016                 }
1017         }
1018         if (defined $o_git_dir) {
1019                 $git_dir = $o_git_dir;
1020         }
1021         return $retval;
1022 }
1023
1024 # get type of given object
1025 sub git_get_type {
1026         my $hash = shift;
1027
1028         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1029         my $type = <$fd>;
1030         close $fd or return;
1031         chomp $type;
1032         return $type;
1033 }
1034
1035 sub git_get_project_config {
1036         my ($key, $type) = @_;
1037
1038         return unless ($key);
1039         $key =~ s/^gitweb\.//;
1040         return if ($key =~ m/\W/);
1041
1042         my @x = (git_cmd(), 'config');
1043         if (defined $type) { push @x, $type; }
1044         push @x, "--get";
1045         push @x, "gitweb.$key";
1046         my $val = qx(@x);
1047         chomp $val;
1048         return ($val);
1049 }
1050
1051 # get hash of given path at given ref
1052 sub git_get_hash_by_path {
1053         my $base = shift;
1054         my $path = shift || return undef;
1055         my $type = shift;
1056
1057         $path =~ s,/+$,,;
1058
1059         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1060                 or die_error(undef, "Open git-ls-tree failed");
1061         my $line = <$fd>;
1062         close $fd or return undef;
1063
1064         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1065         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1066         if (defined $type && $type ne $2) {
1067                 # type doesn't match
1068                 return undef;
1069         }
1070         return $3;
1071 }
1072
1073 # get path of entry with given hash at given tree-ish (ref)
1074 # used to get 'from' filename for combined diff (merge commit) for renames
1075 sub git_get_path_by_hash {
1076         my $base = shift || return;
1077         my $hash = shift || return;
1078
1079         local $/ = "\0";
1080
1081         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1082                 or return undef;
1083         while (my $line = <$fd>) {
1084                 chomp $line;
1085
1086                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1087                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1088                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1089                         close $fd;
1090                         return $1;
1091                 }
1092         }
1093         close $fd;
1094         return undef;
1095 }
1096
1097 ## ......................................................................
1098 ## git utility functions, directly accessing git repository
1099
1100 sub git_get_project_description {
1101         my $path = shift;
1102
1103         open my $fd, "$projectroot/$path/description" or return undef;
1104         my $descr = <$fd>;
1105         close $fd;
1106         chomp $descr;
1107         return $descr;
1108 }
1109
1110 sub git_get_project_url_list {
1111         my $path = shift;
1112
1113         open my $fd, "$projectroot/$path/cloneurl" or return;
1114         my @git_project_url_list = map { chomp; $_ } <$fd>;
1115         close $fd;
1116
1117         return wantarray ? @git_project_url_list : \@git_project_url_list;
1118 }
1119
1120 sub git_get_projects_list {
1121         my ($filter) = @_;
1122         my @list;
1123
1124         $filter ||= '';
1125         $filter =~ s/\.git$//;
1126
1127         my ($check_forks) = gitweb_check_feature('forks');
1128
1129         if (-d $projects_list) {
1130                 # search in directory
1131                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1132                 # remove the trailing "/"
1133                 $dir =~ s!/+$!!;
1134                 my $pfxlen = length("$dir");
1135
1136                 File::Find::find({
1137                         follow_fast => 1, # follow symbolic links
1138                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1139                         wanted => sub {
1140                                 # skip project-list toplevel, if we get it.
1141                                 return if (m!^[/.]$!);
1142                                 # only directories can be git repositories
1143                                 return unless (-d $_);
1144
1145                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1146                                 # we check related file in $projectroot
1147                                 if ($check_forks and $subdir =~ m#/.#) {
1148                                         $File::Find::prune = 1;
1149                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1150                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1151                                         $File::Find::prune = 1;
1152                                 }
1153                         },
1154                 }, "$dir");
1155
1156         } elsif (-f $projects_list) {
1157                 # read from file(url-encoded):
1158                 # 'git%2Fgit.git Linus+Torvalds'
1159                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1160                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1161                 my %paths;
1162                 open my ($fd), $projects_list or return;
1163         PROJECT:
1164                 while (my $line = <$fd>) {
1165                         chomp $line;
1166                         my ($path, $owner) = split ' ', $line;
1167                         $path = unescape($path);
1168                         $owner = unescape($owner);
1169                         if (!defined $path) {
1170                                 next;
1171                         }
1172                         if ($filter ne '') {
1173                                 # looking for forks;
1174                                 my $pfx = substr($path, 0, length($filter));
1175                                 if ($pfx ne $filter) {
1176                                         next PROJECT;
1177                                 }
1178                                 my $sfx = substr($path, length($filter));
1179                                 if ($sfx !~ /^\/.*\.git$/) {
1180                                         next PROJECT;
1181                                 }
1182                         } elsif ($check_forks) {
1183                         PATH:
1184                                 foreach my $filter (keys %paths) {
1185                                         # looking for forks;
1186                                         my $pfx = substr($path, 0, length($filter));
1187                                         if ($pfx ne $filter) {
1188                                                 next PATH;
1189                                         }
1190                                         my $sfx = substr($path, length($filter));
1191                                         if ($sfx !~ /^\/.*\.git$/) {
1192                                                 next PATH;
1193                                         }
1194                                         # is a fork, don't include it in
1195                                         # the list
1196                                         next PROJECT;
1197                                 }
1198                         }
1199                         if (check_export_ok("$projectroot/$path")) {
1200                                 my $pr = {
1201                                         path => $path,
1202                                         owner => decode_utf8($owner),
1203                                 };
1204                                 push @list, $pr;
1205                                 (my $forks_path = $path) =~ s/\.git$//;
1206                                 $paths{$forks_path}++;
1207                         }
1208                 }
1209                 close $fd;
1210         }
1211         return @list;
1212 }
1213
1214 sub git_get_project_owner {
1215         my $project = shift;
1216         my $owner;
1217
1218         return undef unless $project;
1219
1220         # read from file (url-encoded):
1221         # 'git%2Fgit.git Linus+Torvalds'
1222         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1223         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1224         if (-f $projects_list) {
1225                 open (my $fd , $projects_list);
1226                 while (my $line = <$fd>) {
1227                         chomp $line;
1228                         my ($pr, $ow) = split ' ', $line;
1229                         $pr = unescape($pr);
1230                         $ow = unescape($ow);
1231                         if ($pr eq $project) {
1232                                 $owner = decode_utf8($ow);
1233                                 last;
1234                         }
1235                 }
1236                 close $fd;
1237         }
1238         if (!defined $owner) {
1239                 $owner = get_file_owner("$projectroot/$project");
1240         }
1241
1242         return $owner;
1243 }
1244
1245 sub git_get_last_activity {
1246         my ($path) = @_;
1247         my $fd;
1248
1249         $git_dir = "$projectroot/$path";
1250         open($fd, "-|", git_cmd(), 'for-each-ref',
1251              '--format=%(committer)',
1252              '--sort=-committerdate',
1253              '--count=1',
1254              'refs/heads') or return;
1255         my $most_recent = <$fd>;
1256         close $fd or return;
1257         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1258                 my $timestamp = $1;
1259                 my $age = time - $timestamp;
1260                 return ($age, age_string($age));
1261         }
1262 }
1263
1264 sub git_get_references {
1265         my $type = shift || "";
1266         my %refs;
1267         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1268         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1269         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1270                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1271                 or return;
1272
1273         while (my $line = <$fd>) {
1274                 chomp $line;
1275                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1276                         if (defined $refs{$1}) {
1277                                 push @{$refs{$1}}, $2;
1278                         } else {
1279                                 $refs{$1} = [ $2 ];
1280                         }
1281                 }
1282         }
1283         close $fd or return;
1284         return \%refs;
1285 }
1286
1287 sub git_get_rev_name_tags {
1288         my $hash = shift || return undef;
1289
1290         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1291                 or return;
1292         my $name_rev = <$fd>;
1293         close $fd;
1294
1295         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1296                 return $1;
1297         } else {
1298                 # catches also '$hash undefined' output
1299                 return undef;
1300         }
1301 }
1302
1303 ## ----------------------------------------------------------------------
1304 ## parse to hash functions
1305
1306 sub parse_date {
1307         my $epoch = shift;
1308         my $tz = shift || "-0000";
1309
1310         my %date;
1311         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1312         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1313         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1314         $date{'hour'} = $hour;
1315         $date{'minute'} = $min;
1316         $date{'mday'} = $mday;
1317         $date{'day'} = $days[$wday];
1318         $date{'month'} = $months[$mon];
1319         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1320                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1321         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1322                              $mday, $months[$mon], $hour ,$min;
1323         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1324                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1325
1326         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1327         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1328         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1329         $date{'hour_local'} = $hour;
1330         $date{'minute_local'} = $min;
1331         $date{'tz_local'} = $tz;
1332         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1333                                   1900+$year, $mon+1, $mday,
1334                                   $hour, $min, $sec, $tz);
1335         return %date;
1336 }
1337
1338 sub parse_tag {
1339         my $tag_id = shift;
1340         my %tag;
1341         my @comment;
1342
1343         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1344         $tag{'id'} = $tag_id;
1345         while (my $line = <$fd>) {
1346                 chomp $line;
1347                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1348                         $tag{'object'} = $1;
1349                 } elsif ($line =~ m/^type (.+)$/) {
1350                         $tag{'type'} = $1;
1351                 } elsif ($line =~ m/^tag (.+)$/) {
1352                         $tag{'name'} = $1;
1353                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1354                         $tag{'author'} = $1;
1355                         $tag{'epoch'} = $2;
1356                         $tag{'tz'} = $3;
1357                 } elsif ($line =~ m/--BEGIN/) {
1358                         push @comment, $line;
1359                         last;
1360                 } elsif ($line eq "") {
1361                         last;
1362                 }
1363         }
1364         push @comment, <$fd>;
1365         $tag{'comment'} = \@comment;
1366         close $fd or return;
1367         if (!defined $tag{'name'}) {
1368                 return
1369         };
1370         return %tag
1371 }
1372
1373 sub parse_commit_text {
1374         my ($commit_text, $withparents) = @_;
1375         my @commit_lines = split '\n', $commit_text;
1376         my %co;
1377
1378         pop @commit_lines; # Remove '\0'
1379
1380         my $header = shift @commit_lines;
1381         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1382                 return;
1383         }
1384         ($co{'id'}, my @parents) = split ' ', $header;
1385         while (my $line = shift @commit_lines) {
1386                 last if $line eq "\n";
1387                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1388                         $co{'tree'} = $1;
1389                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1390                         push @parents, $1;
1391                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1392                         $co{'author'} = $1;
1393                         $co{'author_epoch'} = $2;
1394                         $co{'author_tz'} = $3;
1395                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1396                                 $co{'author_name'}  = $1;
1397                                 $co{'author_email'} = $2;
1398                         } else {
1399                                 $co{'author_name'} = $co{'author'};
1400                         }
1401                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1402                         $co{'committer'} = $1;
1403                         $co{'committer_epoch'} = $2;
1404                         $co{'committer_tz'} = $3;
1405                         $co{'committer_name'} = $co{'committer'};
1406                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1407                                 $co{'committer_name'}  = $1;
1408                                 $co{'committer_email'} = $2;
1409                         } else {
1410                                 $co{'committer_name'} = $co{'committer'};
1411                         }
1412                 }
1413         }
1414         if (!defined $co{'tree'}) {
1415                 return;
1416         };
1417         $co{'parents'} = \@parents;
1418         $co{'parent'} = $parents[0];
1419
1420         foreach my $title (@commit_lines) {
1421                 $title =~ s/^    //;
1422                 if ($title ne "") {
1423                         $co{'title'} = chop_str($title, 80, 5);
1424                         # remove leading stuff of merges to make the interesting part visible
1425                         if (length($title) > 50) {
1426                                 $title =~ s/^Automatic //;
1427                                 $title =~ s/^merge (of|with) /Merge ... /i;
1428                                 if (length($title) > 50) {
1429                                         $title =~ s/(http|rsync):\/\///;
1430                                 }
1431                                 if (length($title) > 50) {
1432                                         $title =~ s/(master|www|rsync)\.//;
1433                                 }
1434                                 if (length($title) > 50) {
1435                                         $title =~ s/kernel.org:?//;
1436                                 }
1437                                 if (length($title) > 50) {
1438                                         $title =~ s/\/pub\/scm//;
1439                                 }
1440                         }
1441                         $co{'title_short'} = chop_str($title, 50, 5);
1442                         last;
1443                 }
1444         }
1445         if ($co{'title'} eq "") {
1446                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1447         }
1448         # remove added spaces
1449         foreach my $line (@commit_lines) {
1450                 $line =~ s/^    //;
1451         }
1452         $co{'comment'} = \@commit_lines;
1453
1454         my $age = time - $co{'committer_epoch'};
1455         $co{'age'} = $age;
1456         $co{'age_string'} = age_string($age);
1457         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1458         if ($age > 60*60*24*7*2) {
1459                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1460                 $co{'age_string_age'} = $co{'age_string'};
1461         } else {
1462                 $co{'age_string_date'} = $co{'age_string'};
1463                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1464         }
1465         return %co;
1466 }
1467
1468 sub parse_commit {
1469         my ($commit_id) = @_;
1470         my %co;
1471
1472         local $/ = "\0";
1473
1474         open my $fd, "-|", git_cmd(), "rev-list",
1475                 "--parents",
1476                 "--header",
1477                 "--max-count=1",
1478                 $commit_id,
1479                 "--",
1480                 or die_error(undef, "Open git-rev-list failed");
1481         %co = parse_commit_text(<$fd>, 1);
1482         close $fd;
1483
1484         return %co;
1485 }
1486
1487 sub parse_commits {
1488         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1489         my @cos;
1490
1491         $maxcount ||= 1;
1492         $skip ||= 0;
1493
1494         local $/ = "\0";
1495
1496         open my $fd, "-|", git_cmd(), "rev-list",
1497                 "--header",
1498                 ($arg ? ($arg) : ()),
1499                 ("--max-count=" . $maxcount),
1500                 ("--skip=" . $skip),
1501                 $commit_id,
1502                 "--",
1503                 ($filename ? ($filename) : ())
1504                 or die_error(undef, "Open git-rev-list failed");
1505         while (my $line = <$fd>) {
1506                 my %co = parse_commit_text($line);
1507                 push @cos, \%co;
1508         }
1509         close $fd;
1510
1511         return wantarray ? @cos : \@cos;
1512 }
1513
1514 # parse ref from ref_file, given by ref_id, with given type
1515 sub parse_ref {
1516         my $ref_file = shift;
1517         my $ref_id = shift;
1518         my $type = shift || git_get_type($ref_id);
1519         my %ref_item;
1520
1521         $ref_item{'type'} = $type;
1522         $ref_item{'id'} = $ref_id;
1523         $ref_item{'epoch'} = 0;
1524         $ref_item{'age'} = "unknown";
1525         if ($type eq "tag") {
1526                 my %tag = parse_tag($ref_id);
1527                 $ref_item{'comment'} = $tag{'comment'};
1528                 if ($tag{'type'} eq "commit") {
1529                         my %co = parse_commit($tag{'object'});
1530                         $ref_item{'epoch'} = $co{'committer_epoch'};
1531                         $ref_item{'age'} = $co{'age_string'};
1532                 } elsif (defined($tag{'epoch'})) {
1533                         my $age = time - $tag{'epoch'};
1534                         $ref_item{'epoch'} = $tag{'epoch'};
1535                         $ref_item{'age'} = age_string($age);
1536                 }
1537                 $ref_item{'reftype'} = $tag{'type'};
1538                 $ref_item{'name'} = $tag{'name'};
1539                 $ref_item{'refid'} = $tag{'object'};
1540         } elsif ($type eq "commit"){
1541                 my %co = parse_commit($ref_id);
1542                 $ref_item{'reftype'} = "commit";
1543                 $ref_item{'name'} = $ref_file;
1544                 $ref_item{'title'} = $co{'title'};
1545                 $ref_item{'refid'} = $ref_id;
1546                 $ref_item{'epoch'} = $co{'committer_epoch'};
1547                 $ref_item{'age'} = $co{'age_string'};
1548         } else {
1549                 $ref_item{'reftype'} = $type;
1550                 $ref_item{'name'} = $ref_file;
1551                 $ref_item{'refid'} = $ref_id;
1552         }
1553
1554         return %ref_item;
1555 }
1556
1557 # parse line of git-diff-tree "raw" output
1558 sub parse_difftree_raw_line {
1559         my $line = shift;
1560         my %res;
1561
1562         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1563         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1564         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1565                 $res{'from_mode'} = $1;
1566                 $res{'to_mode'} = $2;
1567                 $res{'from_id'} = $3;
1568                 $res{'to_id'} = $4;
1569                 $res{'status'} = $5;
1570                 $res{'similarity'} = $6;
1571                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1572                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1573                 } else {
1574                         $res{'file'} = unquote($7);
1575                 }
1576         }
1577         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1578         # combined diff (for merge commit)
1579         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1580                 $res{'nparents'}  = length($1);
1581                 $res{'from_mode'} = [ split(' ', $2) ];
1582                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1583                 $res{'from_id'} = [ split(' ', $3) ];
1584                 $res{'to_id'} = pop @{$res{'from_id'}};
1585                 $res{'status'} = [ split('', $4) ];
1586                 $res{'to_file'} = unquote($5);
1587         }
1588         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1589         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1590                 $res{'commit'} = $1;
1591         }
1592
1593         return wantarray ? %res : \%res;
1594 }
1595
1596 # parse line of git-ls-tree output
1597 sub parse_ls_tree_line ($;%) {
1598         my $line = shift;
1599         my %opts = @_;
1600         my %res;
1601
1602         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1603         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1604
1605         $res{'mode'} = $1;
1606         $res{'type'} = $2;
1607         $res{'hash'} = $3;
1608         if ($opts{'-z'}) {
1609                 $res{'name'} = $4;
1610         } else {
1611                 $res{'name'} = unquote($4);
1612         }
1613
1614         return wantarray ? %res : \%res;
1615 }
1616
1617 ## ......................................................................
1618 ## parse to array of hashes functions
1619
1620 sub git_get_heads_list {
1621         my $limit = shift;
1622         my @headslist;
1623
1624         open my $fd, '-|', git_cmd(), 'for-each-ref',
1625                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1626                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1627                 'refs/heads'
1628                 or return;
1629         while (my $line = <$fd>) {
1630                 my %ref_item;
1631
1632                 chomp $line;
1633                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1634                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1635                 my ($committer, $epoch, $tz) =
1636                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1637                 $name =~ s!^refs/heads/!!;
1638
1639                 $ref_item{'name'}  = $name;
1640                 $ref_item{'id'}    = $hash;
1641                 $ref_item{'title'} = $title || '(no commit message)';
1642                 $ref_item{'epoch'} = $epoch;
1643                 if ($epoch) {
1644                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1645                 } else {
1646                         $ref_item{'age'} = "unknown";
1647                 }
1648
1649                 push @headslist, \%ref_item;
1650         }
1651         close $fd;
1652
1653         return wantarray ? @headslist : \@headslist;
1654 }
1655
1656 sub git_get_tags_list {
1657         my $limit = shift;
1658         my @tagslist;
1659
1660         open my $fd, '-|', git_cmd(), 'for-each-ref',
1661                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1662                 '--format=%(objectname) %(objecttype) %(refname) '.
1663                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1664                 'refs/tags'
1665                 or return;
1666         while (my $line = <$fd>) {
1667                 my %ref_item;
1668
1669                 chomp $line;
1670                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1671                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1672                 my ($creator, $epoch, $tz) =
1673                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1674                 $name =~ s!^refs/tags/!!;
1675
1676                 $ref_item{'type'} = $type;
1677                 $ref_item{'id'} = $id;
1678                 $ref_item{'name'} = $name;
1679                 if ($type eq "tag") {
1680                         $ref_item{'subject'} = $title;
1681                         $ref_item{'reftype'} = $reftype;
1682                         $ref_item{'refid'}   = $refid;
1683                 } else {
1684                         $ref_item{'reftype'} = $type;
1685                         $ref_item{'refid'}   = $id;
1686                 }
1687
1688                 if ($type eq "tag" || $type eq "commit") {
1689                         $ref_item{'epoch'} = $epoch;
1690                         if ($epoch) {
1691                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1692                         } else {
1693                                 $ref_item{'age'} = "unknown";
1694                         }
1695                 }
1696
1697                 push @tagslist, \%ref_item;
1698         }
1699         close $fd;
1700
1701         return wantarray ? @tagslist : \@tagslist;
1702 }
1703
1704 ## ----------------------------------------------------------------------
1705 ## filesystem-related functions
1706
1707 sub get_file_owner {
1708         my $path = shift;
1709
1710         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1711         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1712         if (!defined $gcos) {
1713                 return undef;
1714         }
1715         my $owner = $gcos;
1716         $owner =~ s/[,;].*$//;
1717         return decode_utf8($owner);
1718 }
1719
1720 ## ......................................................................
1721 ## mimetype related functions
1722
1723 sub mimetype_guess_file {
1724         my $filename = shift;
1725         my $mimemap = shift;
1726         -r $mimemap or return undef;
1727
1728         my %mimemap;
1729         open(MIME, $mimemap) or return undef;
1730         while (<MIME>) {
1731                 next if m/^#/; # skip comments
1732                 my ($mime, $exts) = split(/\t+/);
1733                 if (defined $exts) {
1734                         my @exts = split(/\s+/, $exts);
1735                         foreach my $ext (@exts) {
1736                                 $mimemap{$ext} = $mime;
1737                         }
1738                 }
1739         }
1740         close(MIME);
1741
1742         $filename =~ /\.([^.]*)$/;
1743         return $mimemap{$1};
1744 }
1745
1746 sub mimetype_guess {
1747         my $filename = shift;
1748         my $mime;
1749         $filename =~ /\./ or return undef;
1750
1751         if ($mimetypes_file) {
1752                 my $file = $mimetypes_file;
1753                 if ($file !~ m!^/!) { # if it is relative path
1754                         # it is relative to project
1755                         $file = "$projectroot/$project/$file";
1756                 }
1757                 $mime = mimetype_guess_file($filename, $file);
1758         }
1759         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1760         return $mime;
1761 }
1762
1763 sub blob_mimetype {
1764         my $fd = shift;
1765         my $filename = shift;
1766
1767         if ($filename) {
1768                 my $mime = mimetype_guess($filename);
1769                 $mime and return $mime;
1770         }
1771
1772         # just in case
1773         return $default_blob_plain_mimetype unless $fd;
1774
1775         if (-T $fd) {
1776                 return 'text/plain' .
1777                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1778         } elsif (! $filename) {
1779                 return 'application/octet-stream';
1780         } elsif ($filename =~ m/\.png$/i) {
1781                 return 'image/png';
1782         } elsif ($filename =~ m/\.gif$/i) {
1783                 return 'image/gif';
1784         } elsif ($filename =~ m/\.jpe?g$/i) {
1785                 return 'image/jpeg';
1786         } else {
1787                 return 'application/octet-stream';
1788         }
1789 }
1790
1791 ## ======================================================================
1792 ## functions printing HTML: header, footer, error page
1793
1794 sub git_header_html {
1795         my $status = shift || "200 OK";
1796         my $expires = shift;
1797
1798         my $title = "$site_name";
1799         if (defined $project) {
1800                 $title .= " - " . decode_utf8($project);
1801                 if (defined $action) {
1802                         $title .= "/$action";
1803                         if (defined $file_name) {
1804                                 $title .= " - " . esc_path($file_name);
1805                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1806                                         $title .= "/";
1807                                 }
1808                         }
1809                 }
1810         }
1811         my $content_type;
1812         # require explicit support from the UA if we are to send the page as
1813         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1814         # we have to do this because MSIE sometimes globs '*/*', pretending to
1815         # support xhtml+xml but choking when it gets what it asked for.
1816         if (defined $cgi->http('HTTP_ACCEPT') &&
1817             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1818             $cgi->Accept('application/xhtml+xml') != 0) {
1819                 $content_type = 'application/xhtml+xml';
1820         } else {
1821                 $content_type = 'text/html';
1822         }
1823         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1824                            -status=> $status, -expires => $expires);
1825         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1826         print <<EOF;
1827 <?xml version="1.0" encoding="utf-8"?>
1828 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1829 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1830 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1831 <!-- git core binaries version $git_version -->
1832 <head>
1833 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1834 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1835 <meta name="robots" content="index, nofollow"/>
1836 <title>$title</title>
1837 EOF
1838 # print out each stylesheet that exist
1839         if (defined $stylesheet) {
1840 #provides backwards capability for those people who define style sheet in a config file
1841                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1842         } else {
1843                 foreach my $stylesheet (@stylesheets) {
1844                         next unless $stylesheet;
1845                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1846                 }
1847         }
1848         if (defined $project) {
1849                 printf('<link rel="alternate" title="%s log RSS feed" '.
1850                        'href="%s" type="application/rss+xml" />'."\n",
1851                        esc_param($project), href(action=>"rss"));
1852                 printf('<link rel="alternate" title="%s log Atom feed" '.
1853                        'href="%s" type="application/atom+xml" />'."\n",
1854                        esc_param($project), href(action=>"atom"));
1855         } else {
1856                 printf('<link rel="alternate" title="%s projects list" '.
1857                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1858                        $site_name, href(project=>undef, action=>"project_index"));
1859                 printf('<link rel="alternate" title="%s projects feeds" '.
1860                        'href="%s" type="text/x-opml"/>'."\n",
1861                        $site_name, href(project=>undef, action=>"opml"));
1862         }
1863         if (defined $favicon) {
1864                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1865         }
1866
1867         print "</head>\n" .
1868               "<body>\n";
1869
1870         if (-f $site_header) {
1871                 open (my $fd, $site_header);
1872                 print <$fd>;
1873                 close $fd;
1874         }
1875
1876         print "<div class=\"page_header\">\n" .
1877               $cgi->a({-href => esc_url($logo_url),
1878                        -title => $logo_label},
1879                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1880         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1881         if (defined $project) {
1882                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1883                 if (defined $action) {
1884                         print " / $action";
1885                 }
1886                 print "\n";
1887         }
1888         my ($have_search) = gitweb_check_feature('search');
1889         if ((defined $project) && ($have_search)) {
1890                 if (!defined $searchtext) {
1891                         $searchtext = "";
1892                 }
1893                 my $search_hash;
1894                 if (defined $hash_base) {
1895                         $search_hash = $hash_base;
1896                 } elsif (defined $hash) {
1897                         $search_hash = $hash;
1898                 } else {
1899                         $search_hash = "HEAD";
1900                 }
1901                 $cgi->param("a", "search");
1902                 $cgi->param("h", $search_hash);
1903                 $cgi->param("p", $project);
1904                 print $cgi->startform(-method => "get", -action => $my_uri) .
1905                       "<div class=\"search\">\n" .
1906                       $cgi->hidden(-name => "p") . "\n" .
1907                       $cgi->hidden(-name => "a") . "\n" .
1908                       $cgi->hidden(-name => "h") . "\n" .
1909                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1910                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1911                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1912                       " search:\n",
1913                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1914                       "</div>" .
1915                       $cgi->end_form() . "\n";
1916         }
1917         print "</div>\n";
1918 }
1919
1920 sub git_footer_html {
1921         print "<div class=\"page_footer\">\n";
1922         if (defined $project) {
1923                 my $descr = git_get_project_description($project);
1924                 if (defined $descr) {
1925                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1926                 }
1927                 print $cgi->a({-href => href(action=>"rss"),
1928                               -class => "rss_logo"}, "RSS") . " ";
1929                 print $cgi->a({-href => href(action=>"atom"),
1930                               -class => "rss_logo"}, "Atom") . "\n";
1931         } else {
1932                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1933                               -class => "rss_logo"}, "OPML") . " ";
1934                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1935                               -class => "rss_logo"}, "TXT") . "\n";
1936         }
1937         print "</div>\n" ;
1938
1939         if (-f $site_footer) {
1940                 open (my $fd, $site_footer);
1941                 print <$fd>;
1942                 close $fd;
1943         }
1944
1945         print "</body>\n" .
1946               "</html>";
1947 }
1948
1949 sub die_error {
1950         my $status = shift || "403 Forbidden";
1951         my $error = shift || "Malformed query, file missing or permission denied";
1952
1953         git_header_html($status);
1954         print <<EOF;
1955 <div class="page_body">
1956 <br /><br />
1957 $status - $error
1958 <br />
1959 </div>
1960 EOF
1961         git_footer_html();
1962         exit;
1963 }
1964
1965 ## ----------------------------------------------------------------------
1966 ## functions printing or outputting HTML: navigation
1967
1968 sub git_print_page_nav {
1969         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1970         $extra = '' if !defined $extra; # pager or formats
1971
1972         my @navs = qw(summary shortlog log commit commitdiff tree);
1973         if ($suppress) {
1974                 @navs = grep { $_ ne $suppress } @navs;
1975         }
1976
1977         my %arg = map { $_ => {action=>$_} } @navs;
1978         if (defined $head) {
1979                 for (qw(commit commitdiff)) {
1980                         $arg{$_}{'hash'} = $head;
1981                 }
1982                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1983                         for (qw(shortlog log)) {
1984                                 $arg{$_}{'hash'} = $head;
1985                         }
1986                 }
1987         }
1988         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1989         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1990
1991         print "<div class=\"page_nav\">\n" .
1992                 (join " | ",
1993                  map { $_ eq $current ?
1994                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1995                  } @navs);
1996         print "<br/>\n$extra<br/>\n" .
1997               "</div>\n";
1998 }
1999
2000 sub format_paging_nav {
2001         my ($action, $hash, $head, $page, $nrevs) = @_;
2002         my $paging_nav;
2003
2004
2005         if ($hash ne $head || $page) {
2006                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2007         } else {
2008                 $paging_nav .= "HEAD";
2009         }
2010
2011         if ($page > 0) {
2012                 $paging_nav .= " &sdot; " .
2013                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2014                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2015         } else {
2016                 $paging_nav .= " &sdot; prev";
2017         }
2018
2019         if ($nrevs >= (100 * ($page+1)-1)) {
2020                 $paging_nav .= " &sdot; " .
2021                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2022                                  -accesskey => "n", -title => "Alt-n"}, "next");
2023         } else {
2024                 $paging_nav .= " &sdot; next";
2025         }
2026
2027         return $paging_nav;
2028 }
2029
2030 ## ......................................................................
2031 ## functions printing or outputting HTML: div
2032
2033 sub git_print_header_div {
2034         my ($action, $title, $hash, $hash_base) = @_;
2035         my %args = ();
2036
2037         $args{'action'} = $action;
2038         $args{'hash'} = $hash if $hash;
2039         $args{'hash_base'} = $hash_base if $hash_base;
2040
2041         print "<div class=\"header\">\n" .
2042               $cgi->a({-href => href(%args), -class => "title"},
2043               $title ? $title : $action) .
2044               "\n</div>\n";
2045 }
2046
2047 #sub git_print_authorship (\%) {
2048 sub git_print_authorship {
2049         my $co = shift;
2050
2051         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2052         print "<div class=\"author_date\">" .
2053               esc_html($co->{'author_name'}) .
2054               " [$ad{'rfc2822'}";
2055         if ($ad{'hour_local'} < 6) {
2056                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2057                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2058         } else {
2059                 printf(" (%02d:%02d %s)",
2060                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2061         }
2062         print "]</div>\n";
2063 }
2064
2065 sub git_print_page_path {
2066         my $name = shift;
2067         my $type = shift;
2068         my $hb = shift;
2069
2070
2071         print "<div class=\"page_path\">";
2072         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2073                       -title => 'tree root'}, decode_utf8("[$project]"));
2074         print " / ";
2075         if (defined $name) {
2076                 my @dirname = split '/', $name;
2077                 my $basename = pop @dirname;
2078                 my $fullname = '';
2079
2080                 foreach my $dir (@dirname) {
2081                         $fullname .= ($fullname ? '/' : '') . $dir;
2082                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2083                                                      hash_base=>$hb),
2084                                       -title => $fullname}, esc_path($dir));
2085                         print " / ";
2086                 }
2087                 if (defined $type && $type eq 'blob') {
2088                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2089                                                      hash_base=>$hb),
2090                                       -title => $name}, esc_path($basename));
2091                 } elsif (defined $type && $type eq 'tree') {
2092                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2093                                                      hash_base=>$hb),
2094                                       -title => $name}, esc_path($basename));
2095                         print " / ";
2096                 } else {
2097                         print esc_path($basename);
2098                 }
2099         }
2100         print "<br/></div>\n";
2101 }
2102
2103 # sub git_print_log (\@;%) {
2104 sub git_print_log ($;%) {
2105         my $log = shift;
2106         my %opts = @_;
2107
2108         if ($opts{'-remove_title'}) {
2109                 # remove title, i.e. first line of log
2110                 shift @$log;
2111         }
2112         # remove leading empty lines
2113         while (defined $log->[0] && $log->[0] eq "") {
2114                 shift @$log;
2115         }
2116
2117         # print log
2118         my $signoff = 0;
2119         my $empty = 0;
2120         foreach my $line (@$log) {
2121                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2122                         $signoff = 1;
2123                         $empty = 0;
2124                         if (! $opts{'-remove_signoff'}) {
2125                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2126                                 next;
2127                         } else {
2128                                 # remove signoff lines
2129                                 next;
2130                         }
2131                 } else {
2132                         $signoff = 0;
2133                 }
2134
2135                 # print only one empty line
2136                 # do not print empty line after signoff
2137                 if ($line eq "") {
2138                         next if ($empty || $signoff);
2139                         $empty = 1;
2140                 } else {
2141                         $empty = 0;
2142                 }
2143
2144                 print format_log_line_html($line) . "<br/>\n";
2145         }
2146
2147         if ($opts{'-final_empty_line'}) {
2148                 # end with single empty line
2149                 print "<br/>\n" unless $empty;
2150         }
2151 }
2152
2153 # return link target (what link points to)
2154 sub git_get_link_target {
2155         my $hash = shift;
2156         my $link_target;
2157
2158         # read link
2159         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2160                 or return;
2161         {
2162                 local $/;
2163                 $link_target = <$fd>;
2164         }
2165         close $fd
2166                 or return;
2167
2168         return $link_target;
2169 }
2170
2171 # given link target, and the directory (basedir) the link is in,
2172 # return target of link relative to top directory (top tree);
2173 # return undef if it is not possible (including absolute links).
2174 sub normalize_link_target {
2175         my ($link_target, $basedir, $hash_base) = @_;
2176
2177         # we can normalize symlink target only if $hash_base is provided
2178         return unless $hash_base;
2179
2180         # absolute symlinks (beginning with '/') cannot be normalized
2181         return if (substr($link_target, 0, 1) eq '/');
2182
2183         # normalize link target to path from top (root) tree (dir)
2184         my $path;
2185         if ($basedir) {
2186                 $path = $basedir . '/' . $link_target;
2187         } else {
2188                 # we are in top (root) tree (dir)
2189                 $path = $link_target;
2190         }
2191
2192         # remove //, /./, and /../
2193         my @path_parts;
2194         foreach my $part (split('/', $path)) {
2195                 # discard '.' and ''
2196                 next if (!$part || $part eq '.');
2197                 # handle '..'
2198                 if ($part eq '..') {
2199                         if (@path_parts) {
2200                                 pop @path_parts;
2201                         } else {
2202                                 # link leads outside repository (outside top dir)
2203                                 return;
2204                         }
2205                 } else {
2206                         push @path_parts, $part;
2207                 }
2208         }
2209         $path = join('/', @path_parts);
2210
2211         return $path;
2212 }
2213
2214 # print tree entry (row of git_tree), but without encompassing <tr> element
2215 sub git_print_tree_entry {
2216         my ($t, $basedir, $hash_base, $have_blame) = @_;
2217
2218         my %base_key = ();
2219         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2220
2221         # The format of a table row is: mode list link.  Where mode is
2222         # the mode of the entry, list is the name of the entry, an href,
2223         # and link is the action links of the entry.
2224
2225         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2226         if ($t->{'type'} eq "blob") {
2227                 print "<td class=\"list\">" .
2228                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2229                                                file_name=>"$basedir$t->{'name'}", %base_key),
2230                                 -class => "list"}, esc_path($t->{'name'}));
2231                 if (S_ISLNK(oct $t->{'mode'})) {
2232                         my $link_target = git_get_link_target($t->{'hash'});
2233                         if ($link_target) {
2234                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2235                                 if (defined $norm_target) {
2236                                         print " -> " .
2237                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2238                                                                      file_name=>$norm_target),
2239                                                        -title => $norm_target}, esc_path($link_target));
2240                                 } else {
2241                                         print " -> " . esc_path($link_target);
2242                                 }
2243                         }
2244                 }
2245                 print "</td>\n";
2246                 print "<td class=\"link\">";
2247                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2248                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2249                               "blob");
2250                 if ($have_blame) {
2251                         print " | " .
2252                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2253                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2254                                       "blame");
2255                 }
2256                 if (defined $hash_base) {
2257                         print " | " .
2258                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2259                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2260                                       "history");
2261                 }
2262                 print " | " .
2263                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2264                                                file_name=>"$basedir$t->{'name'}")},
2265                                 "raw");
2266                 print "</td>\n";
2267
2268         } elsif ($t->{'type'} eq "tree") {
2269                 print "<td class=\"list\">";
2270                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2271                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2272                               esc_path($t->{'name'}));
2273                 print "</td>\n";
2274                 print "<td class=\"link\">";
2275                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2276                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2277                               "tree");
2278                 if (defined $hash_base) {
2279                         print " | " .
2280                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2281                                                      file_name=>"$basedir$t->{'name'}")},
2282                                       "history");
2283                 }
2284                 print "</td>\n";
2285         }
2286 }
2287
2288 ## ......................................................................
2289 ## functions printing large fragments of HTML
2290
2291 sub fill_from_file_info {
2292         my ($diff, @parents) = @_;
2293
2294         $diff->{'from_file'} = [ ];
2295         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2296         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2297                 if ($diff->{'status'}[$i] eq 'R' ||
2298                     $diff->{'status'}[$i] eq 'C') {
2299                         $diff->{'from_file'}[$i] =
2300                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2301                 }
2302         }
2303
2304         return $diff;
2305 }
2306
2307 # parameters can be strings, or references to arrays of strings
2308 sub from_ids_eq {
2309         my ($a, $b) = @_;
2310
2311         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2312                 for (my $i = 0; $i < @$a; ++$i) {
2313                         return 0 unless ($a->[$i] eq $b->[$i]);
2314                 }
2315                 return 1;
2316         } elsif (!ref($a) && !ref($b)) {
2317                 return $a eq $b;
2318         } else {
2319                 return 0;
2320         }
2321 }
2322
2323
2324 sub git_difftree_body {
2325         my ($difftree, $hash, @parents) = @_;
2326         my ($parent) = $parents[0];
2327         my ($have_blame) = gitweb_check_feature('blame');
2328         print "<div class=\"list_head\">\n";
2329         if ($#{$difftree} > 10) {
2330                 print(($#{$difftree} + 1) . " files changed:\n");
2331         }
2332         print "</div>\n";
2333
2334         print "<table class=\"" .
2335               (@parents > 1 ? "combined " : "") .
2336               "diff_tree\">\n";
2337         my $alternate = 1;
2338         my $patchno = 0;
2339         foreach my $line (@{$difftree}) {
2340                 my $diff;
2341                 if (ref($line) eq "HASH") {
2342                         # pre-parsed (or generated by hand)
2343                         $diff = $line;
2344                 } else {
2345                         $diff = parse_difftree_raw_line($line);
2346                 }
2347
2348                 if ($alternate) {
2349                         print "<tr class=\"dark\">\n";
2350                 } else {
2351                         print "<tr class=\"light\">\n";
2352                 }
2353                 $alternate ^= 1;
2354
2355                 if (exists $diff->{'nparents'}) { # combined diff
2356
2357                         fill_from_file_info($diff, @parents)
2358                                 unless exists $diff->{'from_file'};
2359
2360                         if ($diff->{'to_id'} ne ('0' x 40)) {
2361                                 # file exists in the result (child) commit
2362                                 print "<td>" .
2363                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2364                                                              file_name=>$diff->{'to_file'},
2365                                                              hash_base=>$hash),
2366                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2367                                       "</td>\n";
2368                         } else {
2369                                 print "<td>" .
2370                                       esc_path($diff->{'to_file'}) .
2371                                       "</td>\n";
2372                         }
2373
2374                         if ($action eq 'commitdiff') {
2375                                 # link to patch
2376                                 $patchno++;
2377                                 print "<td class=\"link\">" .
2378                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2379                                       " | " .
2380                                       "</td>\n";
2381                         }
2382
2383                         my $has_history = 0;
2384                         my $not_deleted = 0;
2385                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2386                                 my $hash_parent = $parents[$i];
2387                                 my $from_hash = $diff->{'from_id'}[$i];
2388                                 my $from_path = $diff->{'from_file'}[$i];
2389                                 my $status = $diff->{'status'}[$i];
2390
2391                                 $has_history ||= ($status ne 'A');
2392                                 $not_deleted ||= ($status ne 'D');
2393
2394                                 if ($status eq 'A') {
2395                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2396                                 } elsif ($status eq 'D') {
2397                                         print "<td class=\"link\">" .
2398                                               $cgi->a({-href => href(action=>"blob",
2399                                                                      hash_base=>$hash,
2400                                                                      hash=>$from_hash,
2401                                                                      file_name=>$from_path)},
2402                                                       "blob" . ($i+1)) .
2403                                               " | </td>\n";
2404                                 } else {
2405                                         if ($diff->{'to_id'} eq $from_hash) {
2406                                                 print "<td class=\"link nochange\">";
2407                                         } else {
2408                                                 print "<td class=\"link\">";
2409                                         }
2410                                         print $cgi->a({-href => href(action=>"blobdiff",
2411                                                                      hash=>$diff->{'to_id'},
2412                                                                      hash_parent=>$from_hash,
2413                                                                      hash_base=>$hash,
2414                                                                      hash_parent_base=>$hash_parent,
2415                                                                      file_name=>$diff->{'to_file'},
2416                                                                      file_parent=>$from_path)},
2417                                                       "diff" . ($i+1)) .
2418                                               " | </td>\n";
2419                                 }
2420                         }
2421
2422                         print "<td class=\"link\">";
2423                         if ($not_deleted) {
2424                                 print $cgi->a({-href => href(action=>"blob",
2425                                                              hash=>$diff->{'to_id'},
2426                                                              file_name=>$diff->{'to_file'},
2427                                                              hash_base=>$hash)},
2428                                               "blob");
2429                                 print " | " if ($has_history);
2430                         }
2431                         if ($has_history) {
2432                                 print $cgi->a({-href => href(action=>"history",
2433                                                              file_name=>$diff->{'to_file'},
2434                                                              hash_base=>$hash)},
2435                                               "history");
2436                         }
2437                         print "</td>\n";
2438
2439                         print "</tr>\n";
2440                         next; # instead of 'else' clause, to avoid extra indent
2441                 }
2442                 # else ordinary diff
2443
2444                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2445                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2446                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2447                         $to_mode_oct = oct $diff->{'to_mode'};
2448                         if (S_ISREG($to_mode_oct)) { # only for regular file
2449                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2450                         }
2451                         $to_file_type = file_type($diff->{'to_mode'});
2452                 }
2453                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2454                         $from_mode_oct = oct $diff->{'from_mode'};
2455                         if (S_ISREG($to_mode_oct)) { # only for regular file
2456                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2457                         }
2458                         $from_file_type = file_type($diff->{'from_mode'});
2459                 }
2460
2461                 if ($diff->{'status'} eq "A") { # created
2462                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2463                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2464                         $mode_chng   .= "]</span>";
2465                         print "<td>";
2466                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2467                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2468                                       -class => "list"}, esc_path($diff->{'file'}));
2469                         print "</td>\n";
2470                         print "<td>$mode_chng</td>\n";
2471                         print "<td class=\"link\">";
2472                         if ($action eq 'commitdiff') {
2473                                 # link to patch
2474                                 $patchno++;
2475                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2476                                 print " | ";
2477                         }
2478                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2479                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2480                                       "blob");
2481                         print "</td>\n";
2482
2483                 } elsif ($diff->{'status'} eq "D") { # deleted
2484                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2485                         print "<td>";
2486                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2487                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2488                                        -class => "list"}, esc_path($diff->{'file'}));
2489                         print "</td>\n";
2490                         print "<td>$mode_chng</td>\n";
2491                         print "<td class=\"link\">";
2492                         if ($action eq 'commitdiff') {
2493                                 # link to patch
2494                                 $patchno++;
2495                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2496                                 print " | ";
2497                         }
2498                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2499                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2500                                       "blob") . " | ";
2501                         if ($have_blame) {
2502                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2503                                                              file_name=>$diff->{'file'})},
2504                                               "blame") . " | ";
2505                         }
2506                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2507                                                      file_name=>$diff->{'file'})},
2508                                       "history");
2509                         print "</td>\n";
2510
2511                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2512                         my $mode_chnge = "";
2513                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2514                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2515                                 if ($from_file_type ne $to_file_type) {
2516                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2517                                 }
2518                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2519                                         if ($from_mode_str && $to_mode_str) {
2520                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2521                                         } elsif ($to_mode_str) {
2522                                                 $mode_chnge .= " mode: $to_mode_str";
2523                                         }
2524                                 }
2525                                 $mode_chnge .= "]</span>\n";
2526                         }
2527                         print "<td>";
2528                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2529                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2530                                       -class => "list"}, esc_path($diff->{'file'}));
2531                         print "</td>\n";
2532                         print "<td>$mode_chnge</td>\n";
2533                         print "<td class=\"link\">";
2534                         if ($action eq 'commitdiff') {
2535                                 # link to patch
2536                                 $patchno++;
2537                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2538                                       " | ";
2539                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2540                                 # "commit" view and modified file (not onlu mode changed)
2541                                 print $cgi->a({-href => href(action=>"blobdiff",
2542                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2543                                                              hash_base=>$hash, hash_parent_base=>$parent,
2544                                                              file_name=>$diff->{'file'})},
2545                                               "diff") .
2546                                       " | ";
2547                         }
2548                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2549                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2550                                        "blob") . " | ";
2551                         if ($have_blame) {
2552                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2553                                                              file_name=>$diff->{'file'})},
2554                                               "blame") . " | ";
2555                         }
2556                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2557                                                      file_name=>$diff->{'file'})},
2558                                       "history");
2559                         print "</td>\n";
2560
2561                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2562                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2563                         my $nstatus = $status_name{$diff->{'status'}};
2564                         my $mode_chng = "";
2565                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2566                                 # mode also for directories, so we cannot use $to_mode_str
2567                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2568                         }
2569                         print "<td>" .
2570                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2571                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2572                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2573                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2574                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2575                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2576                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2577                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2578                               "<td class=\"link\">";
2579                         if ($action eq 'commitdiff') {
2580                                 # link to patch
2581                                 $patchno++;
2582                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2583                                       " | ";
2584                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2585                                 # "commit" view and modified file (not only pure rename or copy)
2586                                 print $cgi->a({-href => href(action=>"blobdiff",
2587                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2588                                                              hash_base=>$hash, hash_parent_base=>$parent,
2589                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2590                                               "diff") .
2591                                       " | ";
2592                         }
2593                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2594                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2595                                       "blob") . " | ";
2596                         if ($have_blame) {
2597                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2598                                                              file_name=>$diff->{'to_file'})},
2599                                               "blame") . " | ";
2600                         }
2601                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2602                                                     file_name=>$diff->{'to_file'})},
2603                                       "history");
2604                         print "</td>\n";
2605
2606                 } # we should not encounter Unmerged (U) or Unknown (X) status
2607                 print "</tr>\n";
2608         }
2609         print "</table>\n";
2610 }
2611
2612 sub git_patchset_body {
2613         my ($fd, $difftree, $hash, @hash_parents) = @_;
2614         my ($hash_parent) = $hash_parents[0];
2615
2616         my $patch_idx = 0;
2617         my $patch_number = 0;
2618         my $patch_line;
2619         my $diffinfo;
2620         my (%from, %to);
2621
2622         print "<div class=\"patchset\">\n";
2623
2624         # skip to first patch
2625         while ($patch_line = <$fd>) {
2626                 chomp $patch_line;
2627
2628                 last if ($patch_line =~ m/^diff /);
2629         }
2630
2631  PATCH:
2632         while ($patch_line) {
2633                 my @diff_header;
2634                 my ($from_id, $to_id);
2635
2636                 # git diff header
2637                 #assert($patch_line =~ m/^diff /) if DEBUG;
2638                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2639                 $patch_number++;
2640                 push @diff_header, $patch_line;
2641
2642                 # extended diff header
2643         EXTENDED_HEADER:
2644                 while ($patch_line = <$fd>) {
2645                         chomp $patch_line;
2646
2647                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2648
2649                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2650                                 $from_id = $1;
2651                                 $to_id   = $2;
2652                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2653                                 $from_id = [ split(',', $1) ];
2654                                 $to_id   = $2;
2655                         }
2656
2657                         push @diff_header, $patch_line;
2658                 }
2659                 my $last_patch_line = $patch_line;
2660
2661                 # check if current patch belong to current raw line
2662                 # and parse raw git-diff line if needed
2663                 if (defined $diffinfo &&
2664                     defined $from_id && defined $to_id &&
2665                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2666                     $diffinfo->{'to_id'} eq $to_id) {
2667                         # this is continuation of a split patch
2668                         print "<div class=\"patch cont\">\n";
2669                 } else {
2670                         # advance raw git-diff output if needed
2671                         $patch_idx++ if defined $diffinfo;
2672
2673                         # read and prepare patch information
2674                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2675                                 # pre-parsed (or generated by hand)
2676                                 $diffinfo = $difftree->[$patch_idx];
2677                         } else {
2678                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2679                         }
2680                         if ($diffinfo->{'nparents'}) {
2681                                 # combined diff
2682                                 $from{'file'} = [];
2683                                 $from{'href'} = [];
2684                                 fill_from_file_info($diffinfo, @hash_parents)
2685                                         unless exists $diffinfo->{'from_file'};
2686                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2687                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2688                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2689                                                 $from{'href'}[$i] = href(action=>"blob",
2690                                                                          hash_base=>$hash_parents[$i],
2691                                                                          hash=>$diffinfo->{'from_id'}[$i],
2692                                                                          file_name=>$from{'file'}[$i]);
2693                                         } else {
2694                                                 $from{'href'}[$i] = undef;
2695                                         }
2696                                 }
2697                         } else {
2698                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2699                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2700                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2701                                                              hash=>$diffinfo->{'from_id'},
2702                                                              file_name=>$from{'file'});
2703                                 } else {
2704                                         delete $from{'href'};
2705                                 }
2706                         }
2707                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2708                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2709                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2710                                                    hash=>$diffinfo->{'to_id'},
2711                                                    file_name=>$to{'file'});
2712                         } else {
2713                                 delete $to{'href'};
2714                         }
2715                         # this is first patch for raw difftree line with $patch_idx index
2716                         # we index @$difftree array from 0, but number patches from 1
2717                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2718                 }
2719
2720                 # print "git diff" header
2721                 $patch_line = shift @diff_header;
2722                 if ($diffinfo->{'nparents'}) {
2723
2724                         # combined diff
2725                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2726                         if ($to{'href'}) {
2727                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2728                                                        esc_path($to{'file'}));
2729                         } else { # file was deleted
2730                                 $patch_line .= esc_path($to{'file'});
2731                         }
2732
2733                 } else {
2734
2735                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2736                         if ($from{'href'}) {
2737                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2738                                                        'a/' . esc_path($from{'file'}));
2739                         } else { # file was added
2740                                 $patch_line .= 'a/' . esc_path($from{'file'});
2741                         }
2742                         $patch_line .= ' ';
2743                         if ($to{'href'}) {
2744                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2745                                                        'b/' . esc_path($to{'file'}));
2746                         } else { # file was deleted
2747                                 $patch_line .= 'b/' . esc_path($to{'file'});
2748                         }
2749
2750                 }
2751                 print "<div class=\"diff header\">$patch_line</div>\n";
2752
2753                 # print extended diff header
2754                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2755         EXTENDED_HEADER:
2756                 foreach $patch_line (@diff_header) {
2757                         # match <path>
2758                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2759                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2760                                                        esc_path($from{'file'}));
2761                         }
2762                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2763                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2764                                                        esc_path($to{'file'}));
2765                         }
2766                         # match single <mode>
2767                         if ($patch_line =~ m/\s(\d{6})$/) {
2768                                 $patch_line .= '<span class="info"> (' .
2769                                                file_type_long($1) .
2770                                                ')</span>';
2771                         }
2772                         # match <hash>
2773                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2774                                 # can match only for combined diff
2775                                 $patch_line = 'index ';
2776                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2777                                         if ($from{'href'}[$i]) {
2778                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2779                                                                         -class=>"hash"},
2780                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2781                                         } else {
2782                                                 $patch_line .= '0' x 7;
2783                                         }
2784                                         # separator
2785                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2786                                 }
2787                                 $patch_line .= '..';
2788                                 if ($to{'href'}) {
2789                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2790                                                                substr($diffinfo->{'to_id'},0,7));
2791                                 } else {
2792                                         $patch_line .= '0' x 7;
2793                                 }
2794
2795                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2796                                 # can match only for ordinary diff
2797                                 my ($from_link, $to_link);
2798                                 if ($from{'href'}) {
2799                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2800                                                              substr($diffinfo->{'from_id'},0,7));
2801                                 } else {
2802                                         $from_link = '0' x 7;
2803                                 }
2804                                 if ($to{'href'}) {
2805                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2806                                                            substr($diffinfo->{'to_id'},0,7));
2807                                 } else {
2808                                         $to_link = '0' x 7;
2809                                 }
2810                                 #affirm {
2811                                 #       my ($from_hash, $to_hash) =
2812                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2813                                 #       my ($from_id, $to_id) =
2814                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2815                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2816                                 #} if DEBUG;
2817                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2818                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2819                         }
2820                         print $patch_line . "<br/>\n";
2821                 }
2822                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2823
2824                 # from-file/to-file diff header
2825                 $patch_line = $last_patch_line;
2826                 if (! $patch_line) {
2827                         print "</div>\n"; # class="patch"
2828                         last PATCH;
2829                 }
2830                 next PATCH if ($patch_line =~ m/^diff /);
2831                 #assert($patch_line =~ m/^---/) if DEBUG;
2832                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2833                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2834                         $patch_line = '--- a/' .
2835                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2836                                               esc_path($from{'file'}));
2837                 }
2838                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2839
2840                 $patch_line = <$fd>;
2841                 chomp $patch_line;
2842
2843                 #assert($patch_line =~ m/^+++/) if DEBUG;
2844                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2845                         $patch_line = '+++ b/' .
2846                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2847                                               esc_path($to{'file'}));
2848                 }
2849                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2850
2851                 # the patch itself
2852         LINE:
2853                 while ($patch_line = <$fd>) {
2854                         chomp $patch_line;
2855
2856                         next PATCH if ($patch_line =~ m/^diff /);
2857
2858                         print format_diff_line($patch_line, \%from, \%to);
2859                 }
2860
2861         } continue {
2862                 print "</div>\n"; # class="patch"
2863         }
2864         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2865
2866         print "</div>\n"; # class="patchset"
2867 }
2868
2869 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2870
2871 sub git_project_list_body {
2872         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2873
2874         my ($check_forks) = gitweb_check_feature('forks');
2875
2876         my @projects;
2877         foreach my $pr (@$projlist) {
2878                 my (@aa) = git_get_last_activity($pr->{'path'});
2879                 unless (@aa) {
2880                         next;
2881                 }
2882                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2883                 if (!defined $pr->{'descr'}) {
2884                         my $descr = git_get_project_description($pr->{'path'}) || "";
2885                         $pr->{'descr_long'} = decode_utf8($descr);
2886                         $pr->{'descr'} = chop_str($descr, 25, 5);
2887                 }
2888                 if (!defined $pr->{'owner'}) {
2889                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2890                 }
2891                 if ($check_forks) {
2892                         my $pname = $pr->{'path'};
2893                         if (($pname =~ s/\.git$//) &&
2894                             ($pname !~ /\/$/) &&
2895                             (-d "$projectroot/$pname")) {
2896                                 $pr->{'forks'} = "-d $projectroot/$pname";
2897                         }
2898                         else {
2899                                 $pr->{'forks'} = 0;
2900                         }
2901                 }
2902                 push @projects, $pr;
2903         }
2904
2905         $order ||= $default_projects_order;
2906         $from = 0 unless defined $from;
2907         $to = $#projects if (!defined $to || $#projects < $to);
2908
2909         print "<table class=\"project_list\">\n";
2910         unless ($no_header) {
2911                 print "<tr>\n";
2912                 if ($check_forks) {
2913                         print "<th></th>\n";
2914                 }
2915                 if ($order eq "project") {
2916                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2917                         print "<th>Project</th>\n";
2918                 } else {
2919                         print "<th>" .
2920                               $cgi->a({-href => href(project=>undef, order=>'project'),
2921                                        -class => "header"}, "Project") .
2922                               "</th>\n";
2923                 }
2924                 if ($order eq "descr") {
2925                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2926                         print "<th>Description</th>\n";
2927                 } else {
2928                         print "<th>" .
2929                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2930                                        -class => "header"}, "Description") .
2931                               "</th>\n";
2932                 }
2933                 if ($order eq "owner") {
2934                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2935                         print "<th>Owner</th>\n";
2936                 } else {
2937                         print "<th>" .
2938                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2939                                        -class => "header"}, "Owner") .
2940                               "</th>\n";
2941                 }
2942                 if ($order eq "age") {
2943                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2944                         print "<th>Last Change</th>\n";
2945                 } else {
2946                         print "<th>" .
2947                               $cgi->a({-href => href(project=>undef, order=>'age'),
2948                                        -class => "header"}, "Last Change") .
2949                               "</th>\n";
2950                 }
2951                 print "<th></th>\n" .
2952                       "</tr>\n";
2953         }
2954         my $alternate = 1;
2955         for (my $i = $from; $i <= $to; $i++) {
2956                 my $pr = $projects[$i];
2957                 if ($alternate) {
2958                         print "<tr class=\"dark\">\n";
2959                 } else {
2960                         print "<tr class=\"light\">\n";
2961                 }
2962                 $alternate ^= 1;
2963                 if ($check_forks) {
2964                         print "<td>";
2965                         if ($pr->{'forks'}) {
2966                                 print "<!-- $pr->{'forks'} -->\n";
2967                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2968                         }
2969                         print "</td>\n";
2970                 }
2971                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2972                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2973                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2974                                         -class => "list", -title => $pr->{'descr_long'}},
2975                                         esc_html($pr->{'descr'})) . "</td>\n" .
2976                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2977                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2978                       $pr->{'age_string'} . "</td>\n" .
2979                       "<td class=\"link\">" .
2980                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2981                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2982                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2983                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2984                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2985                       "</td>\n" .
2986                       "</tr>\n";
2987         }
2988         if (defined $extra) {
2989                 print "<tr>\n";
2990                 if ($check_forks) {
2991                         print "<td></td>\n";
2992                 }
2993                 print "<td colspan=\"5\">$extra</td>\n" .
2994                       "</tr>\n";
2995         }
2996         print "</table>\n";
2997 }
2998
2999 sub git_shortlog_body {
3000         # uses global variable $project
3001         my ($commitlist, $from, $to, $refs, $extra) = @_;
3002
3003         my $have_snapshot = gitweb_have_snapshot();
3004
3005         $from = 0 unless defined $from;
3006         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3007
3008         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3009         my $alternate = 1;
3010         for (my $i = $from; $i <= $to; $i++) {
3011                 my %co = %{$commitlist->[$i]};
3012                 my $commit = $co{'id'};
3013                 my $ref = format_ref_marker($refs, $commit);
3014                 if ($alternate) {
3015                         print "<tr class=\"dark\">\n";
3016                 } else {
3017                         print "<tr class=\"light\">\n";
3018                 }
3019                 $alternate ^= 1;
3020                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3021                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3022                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3023                       "<td>";
3024                 print format_subject_html($co{'title'}, $co{'title_short'},
3025                                           href(action=>"commit", hash=>$commit), $ref);
3026                 print "</td>\n" .
3027                       "<td class=\"link\">" .
3028                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3029                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3030                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3031                 if ($have_snapshot) {
3032                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3033                 }
3034                 print "</td>\n" .
3035                       "</tr>\n";
3036         }
3037         if (defined $extra) {
3038                 print "<tr>\n" .
3039                       "<td colspan=\"4\">$extra</td>\n" .
3040                       "</tr>\n";
3041         }
3042         print "</table>\n";
3043 }
3044
3045 sub git_history_body {
3046         # Warning: assumes constant type (blob or tree) during history
3047         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3048
3049         $from = 0 unless defined $from;
3050         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3051
3052         print "<table class=\"history\" cellspacing=\"0\">\n";
3053         my $alternate = 1;
3054         for (my $i = $from; $i <= $to; $i++) {
3055                 my %co = %{$commitlist->[$i]};
3056                 if (!%co) {
3057                         next;
3058                 }
3059                 my $commit = $co{'id'};
3060
3061                 my $ref = format_ref_marker($refs, $commit);
3062
3063                 if ($alternate) {
3064                         print "<tr class=\"dark\">\n";
3065                 } else {
3066                         print "<tr class=\"light\">\n";
3067                 }
3068                 $alternate ^= 1;
3069                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3070                       # shortlog uses      chop_str($co{'author_name'}, 10)
3071                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3072                       "<td>";
3073                 # originally git_history used chop_str($co{'title'}, 50)
3074                 print format_subject_html($co{'title'}, $co{'title_short'},
3075                                           href(action=>"commit", hash=>$commit), $ref);
3076                 print "</td>\n" .
3077                       "<td class=\"link\">" .
3078                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3079                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3080
3081                 if ($ftype eq 'blob') {
3082                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3083                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3084                         if (defined $blob_current && defined $blob_parent &&
3085                                         $blob_current ne $blob_parent) {
3086                                 print " | " .
3087                                         $cgi->a({-href => href(action=>"blobdiff",
3088                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3089                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3090                                                                file_name=>$file_name)},
3091                                                 "diff to current");
3092                         }
3093                 }
3094                 print "</td>\n" .
3095                       "</tr>\n";
3096         }
3097         if (defined $extra) {
3098                 print "<tr>\n" .
3099                       "<td colspan=\"4\">$extra</td>\n" .
3100                       "</tr>\n";
3101         }
3102         print "</table>\n";
3103 }
3104
3105 sub git_tags_body {
3106         # uses global variable $project
3107         my ($taglist, $from, $to, $extra) = @_;
3108         $from = 0 unless defined $from;
3109         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3110
3111         print "<table class=\"tags\" cellspacing=\"0\">\n";
3112         my $alternate = 1;
3113         for (my $i = $from; $i <= $to; $i++) {
3114                 my $entry = $taglist->[$i];
3115                 my %tag = %$entry;
3116                 my $comment = $tag{'subject'};
3117                 my $comment_short;
3118                 if (defined $comment) {
3119                         $comment_short = chop_str($comment, 30, 5);
3120                 }
3121                 if ($alternate) {
3122                         print "<tr class=\"dark\">\n";
3123                 } else {
3124                         print "<tr class=\"light\">\n";
3125                 }
3126                 $alternate ^= 1;
3127                 if (defined $tag{'age'}) {
3128                         print "<td><i>$tag{'age'}</i></td>\n";
3129                 } else {
3130                         print "<td></td>\n";
3131                 }
3132                 print "<td>" .
3133                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3134                                -class => "list name"}, esc_html($tag{'name'})) .
3135                       "</td>\n" .
3136                       "<td>";
3137                 if (defined $comment) {
3138                         print format_subject_html($comment, $comment_short,
3139                                                   href(action=>"tag", hash=>$tag{'id'}));
3140                 }
3141                 print "</td>\n" .
3142                       "<td class=\"selflink\">";
3143                 if ($tag{'type'} eq "tag") {
3144                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3145                 } else {
3146                         print "&nbsp;";
3147                 }
3148                 print "</td>\n" .
3149                       "<td class=\"link\">" . " | " .
3150                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3151                 if ($tag{'reftype'} eq "commit") {
3152                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3153                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3154                 } elsif ($tag{'reftype'} eq "blob") {
3155                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3156                 }
3157                 print "</td>\n" .
3158                       "</tr>";
3159         }
3160         if (defined $extra) {
3161                 print "<tr>\n" .
3162                       "<td colspan=\"5\">$extra</td>\n" .
3163                       "</tr>\n";
3164         }
3165         print "</table>\n";
3166 }
3167
3168 sub git_heads_body {
3169         # uses global variable $project
3170         my ($headlist, $head, $from, $to, $extra) = @_;
3171         $from = 0 unless defined $from;
3172         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3173
3174         print "<table class=\"heads\" cellspacing=\"0\">\n";
3175         my $alternate = 1;
3176         for (my $i = $from; $i <= $to; $i++) {
3177                 my $entry = $headlist->[$i];
3178                 my %ref = %$entry;
3179                 my $curr = $ref{'id'} eq $head;
3180                 if ($alternate) {
3181                         print "<tr class=\"dark\">\n";
3182                 } else {
3183                         print "<tr class=\"light\">\n";
3184                 }
3185                 $alternate ^= 1;
3186                 print "<td><i>$ref{'age'}</i></td>\n" .
3187                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3188                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3189                                -class => "list name"},esc_html($ref{'name'})) .
3190                       "</td>\n" .
3191                       "<td class=\"link\">" .
3192                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3193                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3194                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3195                       "</td>\n" .
3196                       "</tr>";
3197         }
3198         if (defined $extra) {
3199                 print "<tr>\n" .
3200                       "<td colspan=\"3\">$extra</td>\n" .
3201                       "</tr>\n";
3202         }
3203         print "</table>\n";
3204 }
3205
3206 sub git_search_grep_body {
3207         my ($commitlist, $from, $to, $extra) = @_;
3208         $from = 0 unless defined $from;
3209         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3210
3211         print "<table class=\"grep\" cellspacing=\"0\">\n";
3212         my $alternate = 1;
3213         for (my $i = $from; $i <= $to; $i++) {
3214                 my %co = %{$commitlist->[$i]};
3215                 if (!%co) {
3216                         next;
3217                 }
3218                 my $commit = $co{'id'};
3219                 if ($alternate) {
3220                         print "<tr class=\"dark\">\n";
3221                 } else {
3222                         print "<tr class=\"light\">\n";
3223                 }
3224                 $alternate ^= 1;
3225                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3226                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3227                       "<td>" .
3228                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3229                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3230                 my $comment = $co{'comment'};
3231                 foreach my $line (@$comment) {
3232                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3233                                 my $lead = esc_html($1) || "";
3234                                 $lead = chop_str($lead, 30, 10);
3235                                 my $match = esc_html($2) || "";
3236                                 my $trail = esc_html($3) || "";
3237                                 $trail = chop_str($trail, 30, 10);
3238                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3239                                 print chop_str($text, 80, 5) . "<br/>\n";
3240                         }
3241                 }
3242                 print "</td>\n" .
3243                       "<td class=\"link\">" .
3244                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3245                       " | " .
3246                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3247                 print "</td>\n" .
3248                       "</tr>\n";
3249         }
3250         if (defined $extra) {
3251                 print "<tr>\n" .
3252                       "<td colspan=\"3\">$extra</td>\n" .
3253                       "</tr>\n";
3254         }
3255         print "</table>\n";
3256 }
3257
3258 ## ======================================================================
3259 ## ======================================================================
3260 ## actions
3261
3262 sub git_project_list {
3263         my $order = $cgi->param('o');
3264         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3265                 die_error(undef, "Unknown order parameter");
3266         }
3267
3268         my @list = git_get_projects_list();
3269         if (!@list) {
3270                 die_error(undef, "No projects found");
3271         }
3272
3273         git_header_html();
3274         if (-f $home_text) {
3275                 print "<div class=\"index_include\">\n";
3276                 open (my $fd, $home_text);
3277                 print <$fd>;
3278                 close $fd;
3279                 print "</div>\n";
3280         }
3281         git_project_list_body(\@list, $order);
3282         git_footer_html();
3283 }
3284
3285 sub git_forks {
3286         my $order = $cgi->param('o');
3287         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3288                 die_error(undef, "Unknown order parameter");
3289         }
3290
3291         my @list = git_get_projects_list($project);
3292         if (!@list) {
3293                 die_error(undef, "No forks found");
3294         }
3295
3296         git_header_html();
3297         git_print_page_nav('','');
3298         git_print_header_div('summary', "$project forks");
3299         git_project_list_body(\@list, $order);
3300         git_footer_html();
3301 }
3302
3303 sub git_project_index {
3304         my @projects = git_get_projects_list($project);
3305
3306         print $cgi->header(
3307                 -type => 'text/plain',
3308                 -charset => 'utf-8',
3309                 -content_disposition => 'inline; filename="index.aux"');
3310
3311         foreach my $pr (@projects) {
3312                 if (!exists $pr->{'owner'}) {
3313                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3314                 }
3315
3316                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3317                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3318                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3319                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3320                 $path  =~ s/ /\+/g;
3321                 $owner =~ s/ /\+/g;
3322
3323                 print "$path $owner\n";
3324         }
3325 }
3326
3327 sub git_summary {
3328         my $descr = git_get_project_description($project) || "none";
3329         my %co = parse_commit("HEAD");
3330         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3331         my $head = $co{'id'};
3332
3333         my $owner = git_get_project_owner($project);
3334
3335         my $refs = git_get_references();
3336         # These get_*_list functions return one more to allow us to see if
3337         # there are more ...
3338         my @taglist  = git_get_tags_list(16);
3339         my @headlist = git_get_heads_list(16);
3340         my @forklist;
3341         my ($check_forks) = gitweb_check_feature('forks');
3342
3343         if ($check_forks) {
3344                 @forklist = git_get_projects_list($project);
3345         }
3346
3347         git_header_html();
3348         git_print_page_nav('summary','', $head);
3349
3350         print "<div class=\"title\">&nbsp;</div>\n";
3351         print "<table cellspacing=\"0\">\n" .
3352               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3353               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3354               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3355         # use per project git URL list in $projectroot/$project/cloneurl
3356         # or make project git URL from git base URL and project name
3357         my $url_tag = "URL";
3358         my @url_list = git_get_project_url_list($project);
3359         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3360         foreach my $git_url (@url_list) {
3361                 next unless $git_url;
3362                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3363                 $url_tag = "";
3364         }
3365         print "</table>\n";
3366
3367         if (-s "$projectroot/$project/README.html") {
3368                 if (open my $fd, "$projectroot/$project/README.html") {
3369                         print "<div class=\"title\">readme</div>\n";
3370                         print $_ while (<$fd>);
3371                         close $fd;
3372                 }
3373         }
3374
3375         # we need to request one more than 16 (0..15) to check if
3376         # those 16 are all
3377         my @commitlist = parse_commits($head, 17);
3378         git_print_header_div('shortlog');
3379         git_shortlog_body(\@commitlist, 0, 15, $refs,
3380                           $#commitlist <=  15 ? undef :
3381                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3382
3383         if (@taglist) {
3384                 git_print_header_div('tags');
3385                 git_tags_body(\@taglist, 0, 15,
3386                               $#taglist <=  15 ? undef :
3387                               $cgi->a({-href => href(action=>"tags")}, "..."));
3388         }
3389
3390         if (@headlist) {
3391                 git_print_header_div('heads');
3392                 git_heads_body(\@headlist, $head, 0, 15,
3393                                $#headlist <= 15 ? undef :
3394                                $cgi->a({-href => href(action=>"heads")}, "..."));
3395         }
3396
3397         if (@forklist) {
3398                 git_print_header_div('forks');
3399                 git_project_list_body(\@forklist, undef, 0, 15,
3400                                       $#forklist <= 15 ? undef :
3401                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3402                                       'noheader');
3403         }
3404
3405         git_footer_html();
3406 }
3407
3408 sub git_tag {
3409         my $head = git_get_head_hash($project);
3410         git_header_html();
3411         git_print_page_nav('','', $head,undef,$head);
3412         my %tag = parse_tag($hash);
3413         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3414         print "<div class=\"title_text\">\n" .
3415               "<table cellspacing=\"0\">\n" .
3416               "<tr>\n" .
3417               "<td>object</td>\n" .
3418               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3419                                $tag{'object'}) . "</td>\n" .
3420               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3421                                               $tag{'type'}) . "</td>\n" .
3422               "</tr>\n";
3423         if (defined($tag{'author'})) {
3424                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3425                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3426                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3427                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3428                         "</td></tr>\n";
3429         }
3430         print "</table>\n\n" .
3431               "</div>\n";
3432         print "<div class=\"page_body\">";
3433         my $comment = $tag{'comment'};
3434         foreach my $line (@$comment) {
3435                 chomp $line;
3436                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3437         }
3438         print "</div>\n";
3439         git_footer_html();
3440 }
3441
3442 sub git_blame2 {
3443         my $fd;
3444         my $ftype;
3445
3446         my ($have_blame) = gitweb_check_feature('blame');
3447         if (!$have_blame) {
3448                 die_error('403 Permission denied', "Permission denied");
3449         }
3450         die_error('404 Not Found', "File name not defined") if (!$file_name);
3451         $hash_base ||= git_get_head_hash($project);
3452         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3453         my %co = parse_commit($hash_base)
3454                 or die_error(undef, "Reading commit failed");
3455         if (!defined $hash) {
3456                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3457                         or die_error(undef, "Error looking up file");
3458         }
3459         $ftype = git_get_type($hash);
3460         if ($ftype !~ "blob") {
3461                 die_error('400 Bad Request', "Object is not a blob");
3462         }
3463         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3464               $file_name, $hash_base)
3465                 or die_error(undef, "Open git-blame failed");
3466         git_header_html();
3467         my $formats_nav =
3468                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3469                         "blob") .
3470                 " | " .
3471                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3472                         "history") .
3473                 " | " .
3474                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3475                         "HEAD");
3476         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3477         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3478         git_print_page_path($file_name, $ftype, $hash_base);
3479         my @rev_color = (qw(light2 dark2));
3480         my $num_colors = scalar(@rev_color);
3481         my $current_color = 0;
3482         my $last_rev;
3483         print <<HTML;
3484 <div class="page_body">
3485 <table class="blame">
3486 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3487 HTML
3488         my %metainfo = ();
3489         while (1) {
3490                 $_ = <$fd>;
3491                 last unless defined $_;
3492                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3493                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3494                 if (!exists $metainfo{$full_rev}) {
3495                         $metainfo{$full_rev} = {};
3496                 }
3497                 my $meta = $metainfo{$full_rev};
3498                 while (<$fd>) {
3499                         last if (s/^\t//);
3500                         if (/^(\S+) (.*)$/) {
3501                                 $meta->{$1} = $2;
3502                         }
3503                 }
3504                 my $data = $_;
3505                 chomp $data;
3506                 my $rev = substr($full_rev, 0, 8);
3507                 my $author = $meta->{'author'};
3508                 my %date = parse_date($meta->{'author-time'},
3509                                       $meta->{'author-tz'});
3510                 my $date = $date{'iso-tz'};
3511                 if ($group_size) {
3512                         $current_color = ++$current_color % $num_colors;
3513                 }
3514                 print "<tr class=\"$rev_color[$current_color]\">\n";
3515                 if ($group_size) {
3516                         print "<td class=\"sha1\"";
3517                         print " title=\"". esc_html($author) . ", $date\"";
3518                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3519                         print ">";
3520                         print $cgi->a({-href => href(action=>"commit",
3521                                                      hash=>$full_rev,
3522                                                      file_name=>$file_name)},
3523                                       esc_html($rev));
3524                         print "</td>\n";
3525                 }
3526                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3527                         or die_error(undef, "Open git-rev-parse failed");
3528                 my $parent_commit = <$dd>;
3529                 close $dd;
3530                 chomp($parent_commit);
3531                 my $blamed = href(action => 'blame',
3532                                   file_name => $meta->{'filename'},
3533                                   hash_base => $parent_commit);
3534                 print "<td class=\"linenr\">";
3535                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3536                                 -id => "l$lineno",
3537                                 -class => "linenr" },
3538                               esc_html($lineno));
3539                 print "</td>";
3540                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3541                 print "</tr>\n";
3542         }
3543         print "</table>\n";
3544         print "</div>";
3545         close $fd
3546                 or print "Reading blob failed\n";
3547         git_footer_html();
3548 }
3549
3550 sub git_blame {
3551         my $fd;
3552
3553         my ($have_blame) = gitweb_check_feature('blame');
3554         if (!$have_blame) {
3555                 die_error('403 Permission denied', "Permission denied");
3556         }
3557         die_error('404 Not Found', "File name not defined") if (!$file_name);
3558         $hash_base ||= git_get_head_hash($project);
3559         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3560         my %co = parse_commit($hash_base)
3561                 or die_error(undef, "Reading commit failed");
3562         if (!defined $hash) {
3563                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3564                         or die_error(undef, "Error lookup file");
3565         }
3566         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3567                 or die_error(undef, "Open git-annotate failed");
3568         git_header_html();
3569         my $formats_nav =
3570                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3571                         "blob") .
3572                 " | " .
3573                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3574                         "history") .
3575                 " | " .
3576                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3577                         "HEAD");
3578         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3579         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3580         git_print_page_path($file_name, 'blob', $hash_base);
3581         print "<div class=\"page_body\">\n";
3582         print <<HTML;
3583 <table class="blame">
3584   <tr>
3585     <th>Commit</th>
3586     <th>Age</th>
3587     <th>Author</th>
3588     <th>Line</th>
3589     <th>Data</th>
3590   </tr>
3591 HTML
3592         my @line_class = (qw(light dark));
3593         my $line_class_len = scalar (@line_class);
3594         my $line_class_num = $#line_class;
3595         while (my $line = <$fd>) {
3596                 my $long_rev;
3597                 my $short_rev;
3598                 my $author;
3599                 my $time;
3600                 my $lineno;
3601                 my $data;
3602                 my $age;
3603                 my $age_str;
3604                 my $age_class;
3605
3606                 chomp $line;
3607                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3608
3609                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3610                         $long_rev = $1;
3611                         $author   = $2;
3612                         $time     = $3;
3613                         $lineno   = $4;
3614                         $data     = $5;
3615                 } else {
3616                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3617                         next;
3618                 }
3619                 $short_rev  = substr ($long_rev, 0, 8);
3620                 $age        = time () - $time;
3621                 $age_str    = age_string ($age);
3622                 $age_str    =~ s/ /&nbsp;/g;
3623                 $age_class  = age_class($age);
3624                 $author     = esc_html ($author);
3625                 $author     =~ s/ /&nbsp;/g;
3626
3627                 $data = untabify($data);
3628                 $data = esc_html ($data);
3629
3630                 print <<HTML;
3631   <tr class="$line_class[$line_class_num]">
3632     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3633     <td class="$age_class">$age_str</td>
3634     <td>$author</td>
3635     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3636     <td class="pre">$data</td>
3637   </tr>
3638 HTML
3639         } # while (my $line = <$fd>)
3640         print "</table>\n\n";
3641         close $fd
3642                 or print "Reading blob failed.\n";
3643         print "</div>";
3644         git_footer_html();
3645 }
3646
3647 sub git_tags {
3648         my $head = git_get_head_hash($project);
3649         git_header_html();
3650         git_print_page_nav('','', $head,undef,$head);
3651         git_print_header_div('summary', $project);
3652
3653         my @tagslist = git_get_tags_list();
3654         if (@tagslist) {
3655                 git_tags_body(\@tagslist);
3656         }
3657         git_footer_html();
3658 }
3659
3660 sub git_heads {
3661         my $head = git_get_head_hash($project);
3662         git_header_html();
3663         git_print_page_nav('','', $head,undef,$head);
3664         git_print_header_div('summary', $project);
3665
3666         my @headslist = git_get_heads_list();
3667         if (@headslist) {
3668                 git_heads_body(\@headslist, $head);
3669         }
3670         git_footer_html();
3671 }
3672
3673 sub git_blob_plain {
3674         my $expires;
3675
3676         if (!defined $hash) {
3677                 if (defined $file_name) {
3678                         my $base = $hash_base || git_get_head_hash($project);
3679                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3680                                 or die_error(undef, "Error lookup file");
3681                 } else {
3682                         die_error(undef, "No file name defined");
3683                 }
3684         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3685                 # blobs defined by non-textual hash id's can be cached
3686                 $expires = "+1d";
3687         }
3688
3689         my $type = shift;
3690         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3691                 or die_error(undef, "Couldn't cat $file_name, $hash");
3692
3693         $type ||= blob_mimetype($fd, $file_name);
3694
3695         # save as filename, even when no $file_name is given
3696         my $save_as = "$hash";
3697         if (defined $file_name) {
3698                 $save_as = $file_name;
3699         } elsif ($type =~ m/^text\//) {
3700                 $save_as .= '.txt';
3701         }
3702
3703         print $cgi->header(
3704                 -type => "$type",
3705                 -expires=>$expires,
3706                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3707         undef $/;
3708         binmode STDOUT, ':raw';
3709         print <$fd>;
3710         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3711         $/ = "\n";
3712         close $fd;
3713 }
3714
3715 sub git_blob {
3716         my $expires;
3717
3718         if (!defined $hash) {
3719                 if (defined $file_name) {
3720                         my $base = $hash_base || git_get_head_hash($project);
3721                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3722                                 or die_error(undef, "Error lookup file");
3723                 } else {
3724                         die_error(undef, "No file name defined");
3725                 }
3726         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3727                 # blobs defined by non-textual hash id's can be cached
3728                 $expires = "+1d";
3729         }
3730
3731         my ($have_blame) = gitweb_check_feature('blame');
3732         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3733                 or die_error(undef, "Couldn't cat $file_name, $hash");
3734         my $mimetype = blob_mimetype($fd, $file_name);
3735         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3736                 close $fd;
3737                 return git_blob_plain($mimetype);
3738         }
3739         # we can have blame only for text/* mimetype
3740         $have_blame &&= ($mimetype =~ m!^text/!);
3741
3742         git_header_html(undef, $expires);
3743         my $formats_nav = '';
3744         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3745                 if (defined $file_name) {
3746                         if ($have_blame) {
3747                                 $formats_nav .=
3748                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3749                                                                hash=>$hash, file_name=>$file_name)},
3750                                                 "blame") .
3751                                         " | ";
3752                         }
3753                         $formats_nav .=
3754                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3755                                                        hash=>$hash, file_name=>$file_name)},
3756                                         "history") .
3757                                 " | " .
3758                                 $cgi->a({-href => href(action=>"blob_plain",
3759                                                        hash=>$hash, file_name=>$file_name)},
3760                                         "raw") .
3761                                 " | " .
3762                                 $cgi->a({-href => href(action=>"blob",
3763                                                        hash_base=>"HEAD", file_name=>$file_name)},
3764                                         "HEAD");
3765                 } else {
3766                         $formats_nav .=
3767                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3768                 }
3769                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3770                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3771         } else {
3772                 print "<div class=\"page_nav\">\n" .
3773                       "<br/><br/></div>\n" .
3774                       "<div class=\"title\">$hash</div>\n";
3775         }
3776         git_print_page_path($file_name, "blob", $hash_base);
3777         print "<div class=\"page_body\">\n";
3778         if ($mimetype =~ m!^text/!) {
3779                 my $nr;
3780                 while (my $line = <$fd>) {
3781                         chomp $line;
3782                         $nr++;
3783                         $line = untabify($line);
3784                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3785                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3786                 }
3787         } elsif ($mimetype =~ m!^image/!) {
3788                 print qq!<img type="$mimetype"!;
3789                 if ($file_name) {
3790                         print qq! alt="$file_name" title="$file_name"!;
3791                 }
3792                 print qq! src="! .
3793                       href(action=>"blob_plain", hash=>$hash,
3794                            hash_base=>$hash_base, file_name=>$file_name) .
3795                       qq!" />\n!;
3796         }
3797         close $fd
3798                 or print "Reading blob failed.\n";
3799         print "</div>";
3800         git_footer_html();
3801 }
3802
3803 sub git_tree {
3804         my $have_snapshot = gitweb_have_snapshot();
3805
3806         if (!defined $hash_base) {
3807                 $hash_base = "HEAD";
3808         }
3809         if (!defined $hash) {
3810                 if (defined $file_name) {
3811                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3812                 } else {
3813                         $hash = $hash_base;
3814                 }
3815         }
3816         $/ = "\0";
3817         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3818                 or die_error(undef, "Open git-ls-tree failed");
3819         my @entries = map { chomp; $_ } <$fd>;
3820         close $fd or die_error(undef, "Reading tree failed");
3821         $/ = "\n";
3822
3823         my $refs = git_get_references();
3824         my $ref = format_ref_marker($refs, $hash_base);
3825         git_header_html();
3826         my $basedir = '';
3827         my ($have_blame) = gitweb_check_feature('blame');
3828         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3829                 my @views_nav = ();
3830                 if (defined $file_name) {
3831                         push @views_nav,
3832                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3833                                                        hash=>$hash, file_name=>$file_name)},
3834                                         "history"),
3835                                 $cgi->a({-href => href(action=>"tree",
3836                                                        hash_base=>"HEAD", file_name=>$file_name)},
3837                                         "HEAD"),
3838                 }
3839                 if ($have_snapshot) {
3840                         # FIXME: Should be available when we have no hash base as well.
3841                         push @views_nav,
3842                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3843                                         "snapshot");
3844                 }
3845                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3846                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3847         } else {
3848                 undef $hash_base;
3849                 print "<div class=\"page_nav\">\n";
3850                 print "<br/><br/></div>\n";
3851                 print "<div class=\"title\">$hash</div>\n";
3852         }
3853         if (defined $file_name) {
3854                 $basedir = $file_name;
3855                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3856                         $basedir .= '/';
3857                 }
3858         }
3859         git_print_page_path($file_name, 'tree', $hash_base);
3860         print "<div class=\"page_body\">\n";
3861         print "<table cellspacing=\"0\">\n";
3862         my $alternate = 1;
3863         # '..' (top directory) link if possible
3864         if (defined $hash_base &&
3865             defined $file_name && $file_name =~ m![^/]+$!) {
3866                 if ($alternate) {
3867                         print "<tr class=\"dark\">\n";
3868                 } else {
3869                         print "<tr class=\"light\">\n";
3870                 }
3871                 $alternate ^= 1;
3872
3873                 my $up = $file_name;
3874                 $up =~ s!/?[^/]+$!!;
3875                 undef $up unless $up;
3876                 # based on git_print_tree_entry
3877                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3878                 print '<td class="list">';
3879                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3880                                              file_name=>$up)},
3881                               "..");
3882                 print "</td>\n";
3883                 print "<td class=\"link\"></td>\n";
3884
3885                 print "</tr>\n";
3886         }
3887         foreach my $line (@entries) {
3888                 my %t = parse_ls_tree_line($line, -z => 1);
3889
3890                 if ($alternate) {
3891                         print "<tr class=\"dark\">\n";
3892                 } else {
3893                         print "<tr class=\"light\">\n";
3894                 }
3895                 $alternate ^= 1;
3896
3897                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3898
3899                 print "</tr>\n";
3900         }
3901         print "</table>\n" .
3902               "</div>";
3903         git_footer_html();
3904 }
3905
3906 sub git_snapshot {
3907         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3908         my $have_snapshot = (defined $ctype && defined $suffix);
3909         if (!$have_snapshot) {
3910                 die_error('403 Permission denied', "Permission denied");
3911         }
3912
3913         if (!defined $hash) {
3914                 $hash = git_get_head_hash($project);
3915         }
3916
3917         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3918
3919         print $cgi->header(
3920                 -type => "application/$ctype",
3921                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3922                 -status => '200 OK');
3923
3924         my $git = git_cmd_str();
3925         my $name = $project;
3926         $name =~ s/\047/\047\\\047\047/g;
3927         open my $fd, "-|",
3928                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3929                 or die_error(undef, "Execute git-tar-tree failed");
3930         binmode STDOUT, ':raw';
3931         print <$fd>;
3932         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3933         close $fd;
3934
3935 }
3936
3937 sub git_log {
3938         my $head = git_get_head_hash($project);
3939         if (!defined $hash) {
3940                 $hash = $head;
3941         }
3942         if (!defined $page) {
3943                 $page = 0;
3944         }
3945         my $refs = git_get_references();
3946
3947         my @commitlist = parse_commits($hash, 101, (100 * $page));
3948
3949         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3950
3951         git_header_html();
3952         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3953
3954         if (!@commitlist) {
3955                 my %co = parse_commit($hash);
3956
3957                 git_print_header_div('summary', $project);
3958                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3959         }
3960         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3961         for (my $i = 0; $i <= $to; $i++) {
3962                 my %co = %{$commitlist[$i]};
3963                 next if !%co;
3964                 my $commit = $co{'id'};
3965                 my $ref = format_ref_marker($refs, $commit);
3966                 my %ad = parse_date($co{'author_epoch'});
3967                 git_print_header_div('commit',
3968                                "<span class=\"age\">$co{'age_string'}</span>" .
3969                                esc_html($co{'title'}) . $ref,
3970                                $commit);
3971                 print "<div class=\"title_text\">\n" .
3972                       "<div class=\"log_link\">\n" .
3973                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3974                       " | " .
3975                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3976                       " | " .
3977                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3978                       "<br/>\n" .
3979                       "</div>\n" .
3980                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3981                       "</div>\n";
3982
3983                 print "<div class=\"log_body\">\n";
3984                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3985                 print "</div>\n";
3986         }
3987         if ($#commitlist >= 100) {
3988                 print "<div class=\"page_nav\">\n";
3989                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3990                                -accesskey => "n", -title => "Alt-n"}, "next");
3991                 print "</div>\n";
3992         }
3993         git_footer_html();
3994 }
3995
3996 sub git_commit {
3997         $hash ||= $hash_base || "HEAD";
3998         my %co = parse_commit($hash);
3999         if (!%co) {
4000                 die_error(undef, "Unknown commit object");
4001         }
4002         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4003         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4004
4005         my $parent  = $co{'parent'};
4006         my $parents = $co{'parents'}; # listref
4007
4008         # we need to prepare $formats_nav before any parameter munging
4009         my $formats_nav;
4010         if (!defined $parent) {
4011                 # --root commitdiff
4012                 $formats_nav .= '(initial)';
4013         } elsif (@$parents == 1) {
4014                 # single parent commit
4015                 $formats_nav .=
4016                         '(parent: ' .
4017                         $cgi->a({-href => href(action=>"commit",
4018                                                hash=>$parent)},
4019                                 esc_html(substr($parent, 0, 7))) .
4020                         ')';
4021         } else {
4022                 # merge commit
4023                 $formats_nav .=
4024                         '(merge: ' .
4025                         join(' ', map {
4026                                 $cgi->a({-href => href(action=>"commit",
4027                                                        hash=>$_)},
4028                                         esc_html(substr($_, 0, 7)));
4029                         } @$parents ) .
4030                         ')';
4031         }
4032
4033         if (!defined $parent) {
4034                 $parent = "--root";
4035         }
4036         my @difftree;
4037         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4038                 @diff_opts,
4039                 (@$parents <= 1 ? $parent : '-c'),
4040                 $hash, "--"
4041                 or die_error(undef, "Open git-diff-tree failed");
4042         @difftree = map { chomp; $_ } <$fd>;
4043         close $fd or die_error(undef, "Reading git-diff-tree failed");
4044
4045         # non-textual hash id's can be cached
4046         my $expires;
4047         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4048                 $expires = "+1d";
4049         }
4050         my $refs = git_get_references();
4051         my $ref = format_ref_marker($refs, $co{'id'});
4052
4053         my $have_snapshot = gitweb_have_snapshot();
4054
4055         git_header_html(undef, $expires);
4056         git_print_page_nav('commit', '',
4057                            $hash, $co{'tree'}, $hash,
4058                            $formats_nav);
4059
4060         if (defined $co{'parent'}) {
4061                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4062         } else {
4063                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4064         }
4065         print "<div class=\"title_text\">\n" .
4066               "<table cellspacing=\"0\">\n";
4067         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4068               "<tr>" .
4069               "<td></td><td> $ad{'rfc2822'}";
4070         if ($ad{'hour_local'} < 6) {
4071                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4072                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4073         } else {
4074                 printf(" (%02d:%02d %s)",
4075                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4076         }
4077         print "</td>" .
4078               "</tr>\n";
4079         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4080         print "<tr><td></td><td> $cd{'rfc2822'}" .
4081               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4082               "</td></tr>\n";
4083         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4084         print "<tr>" .
4085               "<td>tree</td>" .
4086               "<td class=\"sha1\">" .
4087               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4088                        class => "list"}, $co{'tree'}) .
4089               "</td>" .
4090               "<td class=\"link\">" .
4091               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4092                       "tree");
4093         if ($have_snapshot) {
4094                 print " | " .
4095                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4096         }
4097         print "</td>" .
4098               "</tr>\n";
4099
4100         foreach my $par (@$parents) {
4101                 print "<tr>" .
4102                       "<td>parent</td>" .
4103                       "<td class=\"sha1\">" .
4104                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4105                                class => "list"}, $par) .
4106                       "</td>" .
4107                       "<td class=\"link\">" .
4108                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4109                       " | " .
4110                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4111                       "</td>" .
4112                       "</tr>\n";
4113         }
4114         print "</table>".
4115               "</div>\n";
4116
4117         print "<div class=\"page_body\">\n";
4118         git_print_log($co{'comment'});
4119         print "</div>\n";
4120
4121         git_difftree_body(\@difftree, $hash, @$parents);
4122
4123         git_footer_html();
4124 }
4125
4126 sub git_object {
4127         # object is defined by:
4128         # - hash or hash_base alone
4129         # - hash_base and file_name
4130         my $type;
4131
4132         # - hash or hash_base alone
4133         if ($hash || ($hash_base && !defined $file_name)) {
4134                 my $object_id = $hash || $hash_base;
4135
4136                 my $git_command = git_cmd_str();
4137                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4138                         or die_error('404 Not Found', "Object does not exist");
4139                 $type = <$fd>;
4140                 chomp $type;
4141                 close $fd
4142                         or die_error('404 Not Found', "Object does not exist");
4143
4144         # - hash_base and file_name
4145         } elsif ($hash_base && defined $file_name) {
4146                 $file_name =~ s,/+$,,;
4147
4148                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4149                         or die_error('404 Not Found', "Base object does not exist");
4150
4151                 # here errors should not hapen
4152                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4153                         or die_error(undef, "Open git-ls-tree failed");
4154                 my $line = <$fd>;
4155                 close $fd;
4156
4157                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4158                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4159                         die_error('404 Not Found', "File or directory for given base does not exist");
4160                 }
4161                 $type = $2;
4162                 $hash = $3;
4163         } else {
4164                 die_error('404 Not Found', "Not enough information to find object");
4165         }
4166
4167         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4168                                           hash=>$hash, hash_base=>$hash_base,
4169                                           file_name=>$file_name),
4170                              -status => '302 Found');
4171 }
4172
4173 sub git_blobdiff {
4174         my $format = shift || 'html';
4175
4176         my $fd;
4177         my @difftree;
4178         my %diffinfo;
4179         my $expires;
4180
4181         # preparing $fd and %diffinfo for git_patchset_body
4182         # new style URI
4183         if (defined $hash_base && defined $hash_parent_base) {
4184                 if (defined $file_name) {
4185                         # read raw output
4186                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4187                                 $hash_parent_base, $hash_base,
4188                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4189                                 or die_error(undef, "Open git-diff-tree failed");
4190                         @difftree = map { chomp; $_ } <$fd>;
4191                         close $fd
4192                                 or die_error(undef, "Reading git-diff-tree failed");
4193                         @difftree
4194                                 or die_error('404 Not Found', "Blob diff not found");
4195
4196                 } elsif (defined $hash &&
4197                          $hash =~ /[0-9a-fA-F]{40}/) {
4198                         # try to find filename from $hash
4199
4200                         # read filtered raw output
4201                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4202                                 $hash_parent_base, $hash_base, "--"
4203                                 or die_error(undef, "Open git-diff-tree failed");
4204                         @difftree =
4205                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4206                                 # $hash == to_id
4207                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4208                                 map { chomp; $_ } <$fd>;
4209                         close $fd
4210                                 or die_error(undef, "Reading git-diff-tree failed");
4211                         @difftree
4212                                 or die_error('404 Not Found', "Blob diff not found");
4213
4214                 } else {
4215                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4216                 }
4217
4218                 if (@difftree > 1) {
4219                         die_error('404 Not Found', "Ambiguous blob diff specification");
4220                 }
4221
4222                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4223                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4224                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4225
4226                 $hash_parent ||= $diffinfo{'from_id'};
4227                 $hash        ||= $diffinfo{'to_id'};
4228
4229                 # non-textual hash id's can be cached
4230                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4231                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4232                         $expires = '+1d';
4233                 }
4234
4235                 # open patch output
4236                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4237                         '-p', ($format eq 'html' ? "--full-index" : ()),
4238                         $hash_parent_base, $hash_base,
4239                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4240                         or die_error(undef, "Open git-diff-tree failed");
4241         }
4242
4243         # old/legacy style URI
4244         if (!%diffinfo && # if new style URI failed
4245             defined $hash && defined $hash_parent) {
4246                 # fake git-diff-tree raw output
4247                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4248                 $diffinfo{'from_id'} = $hash_parent;
4249                 $diffinfo{'to_id'}   = $hash;
4250                 if (defined $file_name) {
4251                         if (defined $file_parent) {
4252                                 $diffinfo{'status'} = '2';
4253                                 $diffinfo{'from_file'} = $file_parent;
4254                                 $diffinfo{'to_file'}   = $file_name;
4255                         } else { # assume not renamed
4256                                 $diffinfo{'status'} = '1';
4257                                 $diffinfo{'from_file'} = $file_name;
4258                                 $diffinfo{'to_file'}   = $file_name;
4259                         }
4260                 } else { # no filename given
4261                         $diffinfo{'status'} = '2';
4262                         $diffinfo{'from_file'} = $hash_parent;
4263                         $diffinfo{'to_file'}   = $hash;
4264                 }
4265
4266                 # non-textual hash id's can be cached
4267                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4268                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4269                         $expires = '+1d';
4270                 }
4271
4272                 # open patch output
4273                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4274                         '-p', ($format eq 'html' ? "--full-index" : ()),
4275                         $hash_parent, $hash, "--"
4276                         or die_error(undef, "Open git-diff failed");
4277         } else  {
4278                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4279                         unless %diffinfo;
4280         }
4281
4282         # header
4283         if ($format eq 'html') {
4284                 my $formats_nav =
4285                         $cgi->a({-href => href(action=>"blobdiff_plain",
4286                                                hash=>$hash, hash_parent=>$hash_parent,
4287                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4288                                                file_name=>$file_name, file_parent=>$file_parent)},
4289                                 "raw");
4290                 git_header_html(undef, $expires);
4291                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4292                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4293                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4294                 } else {
4295                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4296                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4297                 }
4298                 if (defined $file_name) {
4299                         git_print_page_path($file_name, "blob", $hash_base);
4300                 } else {
4301                         print "<div class=\"page_path\"></div>\n";
4302                 }
4303
4304         } elsif ($format eq 'plain') {
4305                 print $cgi->header(
4306                         -type => 'text/plain',
4307                         -charset => 'utf-8',
4308                         -expires => $expires,
4309                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4310
4311                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4312
4313         } else {
4314                 die_error(undef, "Unknown blobdiff format");
4315         }
4316
4317         # patch
4318         if ($format eq 'html') {
4319                 print "<div class=\"page_body\">\n";
4320
4321                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4322                 close $fd;
4323
4324                 print "</div>\n"; # class="page_body"
4325                 git_footer_html();
4326
4327         } else {
4328                 while (my $line = <$fd>) {
4329                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4330                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4331
4332                         print $line;
4333
4334                         last if $line =~ m!^\+\+\+!;
4335                 }
4336                 local $/ = undef;
4337                 print <$fd>;
4338                 close $fd;
4339         }
4340 }
4341
4342 sub git_blobdiff_plain {
4343         git_blobdiff('plain');
4344 }
4345
4346 sub git_commitdiff {
4347         my $format = shift || 'html';
4348         $hash ||= $hash_base || "HEAD";
4349         my %co = parse_commit($hash);
4350         if (!%co) {
4351                 die_error(undef, "Unknown commit object");
4352         }
4353
4354         # we need to prepare $formats_nav before any parameter munging
4355         my $formats_nav;
4356         if ($format eq 'html') {
4357                 $formats_nav =
4358                         $cgi->a({-href => href(action=>"commitdiff_plain",
4359                                                hash=>$hash, hash_parent=>$hash_parent)},
4360                                 "raw");
4361
4362                 if (defined $hash_parent) {
4363                         # commitdiff with two commits given
4364                         my $hash_parent_short = $hash_parent;
4365                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4366                                 $hash_parent_short = substr($hash_parent, 0, 7);
4367                         }
4368                         $formats_nav .=
4369                                 ' (from: ' .
4370                                 $cgi->a({-href => href(action=>"commitdiff",
4371                                                        hash=>$hash_parent)},
4372                                         esc_html($hash_parent_short)) .
4373                                 ')';
4374                 } elsif (!$co{'parent'}) {
4375                         # --root commitdiff
4376                         $formats_nav .= ' (initial)';
4377                 } elsif (scalar @{$co{'parents'}} == 1) {
4378                         # single parent commit
4379                         $formats_nav .=
4380                                 ' (parent: ' .
4381                                 $cgi->a({-href => href(action=>"commitdiff",
4382                                                        hash=>$co{'parent'})},
4383                                         esc_html(substr($co{'parent'}, 0, 7))) .
4384                                 ')';
4385                 } else {
4386                         # merge commit
4387                         $formats_nav .=
4388                                 ' (merge: ' .
4389                                 join(' ', map {
4390                                         $cgi->a({-href => href(action=>"commitdiff",
4391                                                                hash=>$_)},
4392                                                 esc_html(substr($_, 0, 7)));
4393                                 } @{$co{'parents'}} ) .
4394                                 ')';
4395                 }
4396         }
4397
4398         my $hash_parent_param = $hash_parent;
4399         if (!defined $hash_parent) {
4400                 $hash_parent_param =
4401                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4402         }
4403
4404         # read commitdiff
4405         my $fd;
4406         my @difftree;
4407         if ($format eq 'html') {
4408                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4409                         "--no-commit-id", "--patch-with-raw", "--full-index",
4410                         $hash_parent_param, $hash, "--"
4411                         or die_error(undef, "Open git-diff-tree failed");
4412
4413                 while (my $line = <$fd>) {
4414                         chomp $line;
4415                         # empty line ends raw part of diff-tree output
4416                         last unless $line;
4417                         push @difftree, scalar parse_difftree_raw_line($line);
4418                 }
4419
4420         } elsif ($format eq 'plain') {
4421                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4422                         '-p', $hash_parent_param, $hash, "--"
4423                         or die_error(undef, "Open git-diff-tree failed");
4424
4425         } else {
4426                 die_error(undef, "Unknown commitdiff format");
4427         }
4428
4429         # non-textual hash id's can be cached
4430         my $expires;
4431         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4432                 $expires = "+1d";
4433         }
4434
4435         # write commit message
4436         if ($format eq 'html') {
4437                 my $refs = git_get_references();
4438                 my $ref = format_ref_marker($refs, $co{'id'});
4439
4440                 git_header_html(undef, $expires);
4441                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4442                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4443                 git_print_authorship(\%co);
4444                 print "<div class=\"page_body\">\n";
4445                 if (@{$co{'comment'}} > 1) {
4446                         print "<div class=\"log\">\n";
4447                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4448                         print "</div>\n"; # class="log"
4449                 }
4450
4451         } elsif ($format eq 'plain') {
4452                 my $refs = git_get_references("tags");
4453                 my $tagname = git_get_rev_name_tags($hash);
4454                 my $filename = basename($project) . "-$hash.patch";
4455
4456                 print $cgi->header(
4457                         -type => 'text/plain',
4458                         -charset => 'utf-8',
4459                         -expires => $expires,
4460                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4461                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4462                 print <<TEXT;
4463 From: $co{'author'}
4464 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4465 Subject: $co{'title'}
4466 TEXT
4467                 print "X-Git-Tag: $tagname\n" if $tagname;
4468                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4469
4470                 foreach my $line (@{$co{'comment'}}) {
4471                         print "$line\n";
4472                 }
4473                 print "---\n\n";
4474         }
4475
4476         # write patch
4477         if ($format eq 'html') {
4478                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4479                 print "<br/>\n";
4480
4481                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4482                 close $fd;
4483                 print "</div>\n"; # class="page_body"
4484                 git_footer_html();
4485
4486         } elsif ($format eq 'plain') {
4487                 local $/ = undef;
4488                 print <$fd>;
4489                 close $fd
4490                         or print "Reading git-diff-tree failed\n";
4491         }
4492 }
4493
4494 sub git_commitdiff_plain {
4495         git_commitdiff('plain');
4496 }
4497
4498 sub git_history {
4499         if (!defined $hash_base) {
4500                 $hash_base = git_get_head_hash($project);
4501         }
4502         if (!defined $page) {
4503                 $page = 0;
4504         }
4505         my $ftype;
4506         my %co = parse_commit($hash_base);
4507         if (!%co) {
4508                 die_error(undef, "Unknown commit object");
4509         }
4510
4511         my $refs = git_get_references();
4512         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4513
4514         if (!defined $hash && defined $file_name) {
4515                 $hash = git_get_hash_by_path($hash_base, $file_name);
4516         }
4517         if (defined $hash) {
4518                 $ftype = git_get_type($hash);
4519         }
4520
4521         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4522
4523         my $paging_nav = '';
4524         if ($page > 0) {
4525                 $paging_nav .=
4526                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4527                                                file_name=>$file_name)},
4528                                 "first");
4529                 $paging_nav .= " &sdot; " .
4530                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4531                                                file_name=>$file_name, page=>$page-1),
4532                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4533         } else {
4534                 $paging_nav .= "first";
4535                 $paging_nav .= " &sdot; prev";
4536         }
4537         if ($#commitlist >= 100) {
4538                 $paging_nav .= " &sdot; " .
4539                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4540                                                file_name=>$file_name, page=>$page+1),
4541                                  -accesskey => "n", -title => "Alt-n"}, "next");
4542         } else {
4543                 $paging_nav .= " &sdot; next";
4544         }
4545         my $next_link = '';
4546         if ($#commitlist >= 100) {
4547                 $next_link =
4548                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4549                                                file_name=>$file_name, page=>$page+1),
4550                                  -accesskey => "n", -title => "Alt-n"}, "next");
4551         }
4552
4553         git_header_html();
4554         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4555         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4556         git_print_page_path($file_name, $ftype, $hash_base);
4557
4558         git_history_body(\@commitlist, 0, 99,
4559                          $refs, $hash_base, $ftype, $next_link);
4560
4561         git_footer_html();
4562 }
4563
4564 sub git_search {
4565         my ($have_search) = gitweb_check_feature('search');
4566         if (!$have_search) {
4567                 die_error('403 Permission denied', "Permission denied");
4568         }
4569         if (!defined $searchtext) {
4570                 die_error(undef, "Text field empty");
4571         }
4572         if (!defined $hash) {
4573                 $hash = git_get_head_hash($project);
4574         }
4575         my %co = parse_commit($hash);
4576         if (!%co) {
4577                 die_error(undef, "Unknown commit object");
4578         }
4579         if (!defined $page) {
4580                 $page = 0;
4581         }
4582
4583         $searchtype ||= 'commit';
4584         if ($searchtype eq 'pickaxe') {
4585                 # pickaxe may take all resources of your box and run for several minutes
4586                 # with every query - so decide by yourself how public you make this feature
4587                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4588                 if (!$have_pickaxe) {
4589                         die_error('403 Permission denied', "Permission denied");
4590                 }
4591         }
4592
4593         git_header_html();
4594
4595         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4596                 my $greptype;
4597                 if ($searchtype eq 'commit') {
4598                         $greptype = "--grep=";
4599                 } elsif ($searchtype eq 'author') {
4600                         $greptype = "--author=";
4601                 } elsif ($searchtype eq 'committer') {
4602                         $greptype = "--committer=";
4603                 }
4604                 $greptype .= $searchtext;
4605                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4606
4607                 my $paging_nav = '';
4608                 if ($page > 0) {
4609                         $paging_nav .=
4610                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4611                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4612                                         "first");
4613                         $paging_nav .= " &sdot; " .
4614                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4615                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4616                                                        page=>$page-1),
4617                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4618                 } else {
4619                         $paging_nav .= "first";
4620                         $paging_nav .= " &sdot; prev";
4621                 }
4622                 if ($#commitlist >= 100) {
4623                         $paging_nav .= " &sdot; " .
4624                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4625                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4626                                                        page=>$page+1),
4627                                          -accesskey => "n", -title => "Alt-n"}, "next");
4628                 } else {
4629                         $paging_nav .= " &sdot; next";
4630                 }
4631                 my $next_link = '';
4632                 if ($#commitlist >= 100) {
4633                         $next_link =
4634                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4635                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4636                                                        page=>$page+1),
4637                                          -accesskey => "n", -title => "Alt-n"}, "next");
4638                 }
4639
4640                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4641                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4642                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4643         }
4644
4645         if ($searchtype eq 'pickaxe') {
4646                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4647                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4648
4649                 print "<table cellspacing=\"0\">\n";
4650                 my $alternate = 1;
4651                 $/ = "\n";
4652                 my $git_command = git_cmd_str();
4653                 open my $fd, "-|", "$git_command rev-list $hash | " .
4654                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4655                 undef %co;
4656                 my @files;
4657                 while (my $line = <$fd>) {
4658                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4659                                 my %set;
4660                                 $set{'file'} = $6;
4661                                 $set{'from_id'} = $3;
4662                                 $set{'to_id'} = $4;
4663                                 $set{'id'} = $set{'to_id'};
4664                                 if ($set{'id'} =~ m/0{40}/) {
4665                                         $set{'id'} = $set{'from_id'};
4666                                 }
4667                                 if ($set{'id'} =~ m/0{40}/) {
4668                                         next;
4669                                 }
4670                                 push @files, \%set;
4671                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4672                                 if (%co) {
4673                                         if ($alternate) {
4674                                                 print "<tr class=\"dark\">\n";
4675                                         } else {
4676                                                 print "<tr class=\"light\">\n";
4677                                         }
4678                                         $alternate ^= 1;
4679                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4680                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4681                                               "<td>" .
4682                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4683                                                       -class => "list subject"},
4684                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4685                                         while (my $setref = shift @files) {
4686                                                 my %set = %$setref;
4687                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4688                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4689                                                               -class => "list"},
4690                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4691                                                       "<br/>\n";
4692                                         }
4693                                         print "</td>\n" .
4694                                               "<td class=\"link\">" .
4695                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4696                                               " | " .
4697                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4698                                         print "</td>\n" .
4699                                               "</tr>\n";
4700                                 }
4701                                 %co = parse_commit($1);
4702                         }
4703                 }
4704                 close $fd;
4705
4706                 print "</table>\n";
4707         }
4708         git_footer_html();
4709 }
4710
4711 sub git_search_help {
4712         git_header_html();
4713         git_print_page_nav('','', $hash,$hash,$hash);
4714         print <<EOT;
4715 <dl>
4716 <dt><b>commit</b></dt>
4717 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4718 <dt><b>author</b></dt>
4719 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4720 <dt><b>committer</b></dt>
4721 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4722 EOT
4723         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4724         if ($have_pickaxe) {
4725                 print <<EOT;
4726 <dt><b>pickaxe</b></dt>
4727 <dd>All commits that caused the string to appear or disappear from any file (changes that
4728 added, removed or "modified" the string) will be listed. This search can take a while and
4729 takes a lot of strain on the server, so please use it wisely.</dd>
4730 EOT
4731         }
4732         print "</dl>\n";
4733         git_footer_html();
4734 }
4735
4736 sub git_shortlog {
4737         my $head = git_get_head_hash($project);
4738         if (!defined $hash) {
4739                 $hash = $head;
4740         }
4741         if (!defined $page) {
4742                 $page = 0;
4743         }
4744         my $refs = git_get_references();
4745
4746         my @commitlist = parse_commits($hash, 101, (100 * $page));
4747
4748         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4749         my $next_link = '';
4750         if ($#commitlist >= 100) {
4751                 $next_link =
4752                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4753                                  -accesskey => "n", -title => "Alt-n"}, "next");
4754         }
4755
4756         git_header_html();
4757         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4758         git_print_header_div('summary', $project);
4759
4760         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4761
4762         git_footer_html();
4763 }
4764
4765 ## ......................................................................
4766 ## feeds (RSS, Atom; OPML)
4767
4768 sub git_feed {
4769         my $format = shift || 'atom';
4770         my ($have_blame) = gitweb_check_feature('blame');
4771
4772         # Atom: http://www.atomenabled.org/developers/syndication/
4773         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4774         if ($format ne 'rss' && $format ne 'atom') {
4775                 die_error(undef, "Unknown web feed format");
4776         }
4777
4778         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4779         my $head = $hash || 'HEAD';
4780         my @commitlist = parse_commits($head, 150);
4781
4782         my %latest_commit;
4783         my %latest_date;
4784         my $content_type = "application/$format+xml";
4785         if (defined $cgi->http('HTTP_ACCEPT') &&
4786                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4787                 # browser (feed reader) prefers text/xml
4788                 $content_type = 'text/xml';
4789         }
4790         if (defined($commitlist[0])) {
4791                 %latest_commit = %{$commitlist[0]};
4792                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4793                 print $cgi->header(
4794                         -type => $content_type,
4795                         -charset => 'utf-8',
4796                         -last_modified => $latest_date{'rfc2822'});
4797         } else {
4798                 print $cgi->header(
4799                         -type => $content_type,
4800                         -charset => 'utf-8');
4801         }
4802
4803         # Optimization: skip generating the body if client asks only
4804         # for Last-Modified date.
4805         return if ($cgi->request_method() eq 'HEAD');
4806
4807         # header variables
4808         my $title = "$site_name - $project/$action";
4809         my $feed_type = 'log';
4810         if (defined $hash) {
4811                 $title .= " - '$hash'";
4812                 $feed_type = 'branch log';
4813                 if (defined $file_name) {
4814                         $title .= " :: $file_name";
4815                         $feed_type = 'history';
4816                 }
4817         } elsif (defined $file_name) {
4818                 $title .= " - $file_name";
4819                 $feed_type = 'history';
4820         }
4821         $title .= " $feed_type";
4822         my $descr = git_get_project_description($project);
4823         if (defined $descr) {
4824                 $descr = esc_html($descr);
4825         } else {
4826                 $descr = "$project " .
4827                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4828                          " feed";
4829         }
4830         my $owner = git_get_project_owner($project);
4831         $owner = esc_html($owner);
4832
4833         #header
4834         my $alt_url;
4835         if (defined $file_name) {
4836                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4837         } elsif (defined $hash) {
4838                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4839         } else {
4840                 $alt_url = href(-full=>1, action=>"summary");
4841         }
4842         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4843         if ($format eq 'rss') {
4844                 print <<XML;
4845 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4846 <channel>
4847 XML
4848                 print "<title>$title</title>\n" .
4849                       "<link>$alt_url</link>\n" .
4850                       "<description>$descr</description>\n" .
4851                       "<language>en</language>\n";
4852         } elsif ($format eq 'atom') {
4853                 print <<XML;
4854 <feed xmlns="http://www.w3.org/2005/Atom">
4855 XML
4856                 print "<title>$title</title>\n" .
4857                       "<subtitle>$descr</subtitle>\n" .
4858                       '<link rel="alternate" type="text/html" href="' .
4859                       $alt_url . '" />' . "\n" .
4860                       '<link rel="self" type="' . $content_type . '" href="' .
4861                       $cgi->self_url() . '" />' . "\n" .
4862                       "<id>" . href(-full=>1) . "</id>\n" .
4863                       # use project owner for feed author
4864                       "<author><name>$owner</name></author>\n";
4865                 if (defined $favicon) {
4866                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4867                 }
4868                 if (defined $logo_url) {
4869                         # not twice as wide as tall: 72 x 27 pixels
4870                         print "<logo>" . esc_url($logo) . "</logo>\n";
4871                 }
4872                 if (! %latest_date) {
4873                         # dummy date to keep the feed valid until commits trickle in:
4874                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4875                 } else {
4876                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4877                 }
4878         }
4879
4880         # contents
4881         for (my $i = 0; $i <= $#commitlist; $i++) {
4882                 my %co = %{$commitlist[$i]};
4883                 my $commit = $co{'id'};
4884                 # we read 150, we always show 30 and the ones more recent than 48 hours
4885                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4886                         last;
4887                 }
4888                 my %cd = parse_date($co{'author_epoch'});
4889
4890                 # get list of changed files
4891                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4892                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4893                         or next;
4894                 my @difftree = map { chomp; $_ } <$fd>;
4895                 close $fd
4896                         or next;
4897
4898                 # print element (entry, item)
4899                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4900                 if ($format eq 'rss') {
4901                         print "<item>\n" .
4902                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4903                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4904                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4905                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4906                               "<link>$co_url</link>\n" .
4907                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4908                               "<content:encoded>" .
4909                               "<![CDATA[\n";
4910                 } elsif ($format eq 'atom') {
4911                         print "<entry>\n" .
4912                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4913                               "<updated>$cd{'iso-8601'}</updated>\n" .
4914                               "<author>\n" .
4915                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4916                         if ($co{'author_email'}) {
4917                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4918                         }
4919                         print "</author>\n" .
4920                               # use committer for contributor
4921                               "<contributor>\n" .
4922                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4923                         if ($co{'committer_email'}) {
4924                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4925                         }
4926                         print "</contributor>\n" .
4927                               "<published>$cd{'iso-8601'}</published>\n" .
4928                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4929                               "<id>$co_url</id>\n" .
4930                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4931                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4932                 }
4933                 my $comment = $co{'comment'};
4934                 print "<pre>\n";
4935                 foreach my $line (@$comment) {
4936                         $line = esc_html($line);
4937                         print "$line\n";
4938                 }
4939                 print "</pre><ul>\n";
4940                 foreach my $difftree_line (@difftree) {
4941                         my %difftree = parse_difftree_raw_line($difftree_line);
4942                         next if !$difftree{'from_id'};
4943
4944                         my $file = $difftree{'file'} || $difftree{'to_file'};
4945
4946                         print "<li>" .
4947                               "[" .
4948                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4949                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4950                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4951                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4952                                       -title => "diff"}, 'D');
4953                         if ($have_blame) {
4954                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4955                                                              file_name=>$file, hash_base=>$commit),
4956                                               -title => "blame"}, 'B');
4957                         }
4958                         # if this is not a feed of a file history
4959                         if (!defined $file_name || $file_name ne $file) {
4960                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4961                                                              file_name=>$file, hash=>$commit),
4962                                               -title => "history"}, 'H');
4963                         }
4964                         $file = esc_path($file);
4965                         print "] ".
4966                               "$file</li>\n";
4967                 }
4968                 if ($format eq 'rss') {
4969                         print "</ul>]]>\n" .
4970                               "</content:encoded>\n" .
4971                               "</item>\n";
4972                 } elsif ($format eq 'atom') {
4973                         print "</ul>\n</div>\n" .
4974                               "</content>\n" .
4975                               "</entry>\n";
4976                 }
4977         }
4978
4979         # end of feed
4980         if ($format eq 'rss') {
4981                 print "</channel>\n</rss>\n";
4982         }       elsif ($format eq 'atom') {
4983                 print "</feed>\n";
4984         }
4985 }
4986
4987 sub git_rss {
4988         git_feed('rss');
4989 }
4990
4991 sub git_atom {
4992         git_feed('atom');
4993 }
4994
4995 sub git_opml {
4996         my @list = git_get_projects_list();
4997
4998         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4999         print <<XML;
5000 <?xml version="1.0" encoding="utf-8"?>
5001 <opml version="1.0">
5002 <head>
5003   <title>$site_name OPML Export</title>
5004 </head>
5005 <body>
5006 <outline text="git RSS feeds">
5007 XML
5008
5009         foreach my $pr (@list) {
5010                 my %proj = %$pr;
5011                 my $head = git_get_head_hash($proj{'path'});
5012                 if (!defined $head) {
5013                         next;
5014                 }
5015                 $git_dir = "$projectroot/$proj{'path'}";
5016                 my %co = parse_commit($head);
5017                 if (!%co) {
5018                         next;
5019                 }
5020
5021                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5022                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5023                 my $html = "$my_url?p=$proj{'path'};a=summary";
5024                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5025         }
5026         print <<XML;
5027 </outline>
5028 </body>
5029 </opml>
5030 XML
5031 }