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         if (!defined $line) {
1065                 # there is no tree or hash given by $path at $base
1066                 return undef;
1067         }
1068
1069         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1070         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1071         if (defined $type && $type ne $2) {
1072                 # type doesn't match
1073                 return undef;
1074         }
1075         return $3;
1076 }
1077
1078 # get path of entry with given hash at given tree-ish (ref)
1079 # used to get 'from' filename for combined diff (merge commit) for renames
1080 sub git_get_path_by_hash {
1081         my $base = shift || return;
1082         my $hash = shift || return;
1083
1084         local $/ = "\0";
1085
1086         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1087                 or return undef;
1088         while (my $line = <$fd>) {
1089                 chomp $line;
1090
1091                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1092                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1093                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1094                         close $fd;
1095                         return $1;
1096                 }
1097         }
1098         close $fd;
1099         return undef;
1100 }
1101
1102 ## ......................................................................
1103 ## git utility functions, directly accessing git repository
1104
1105 sub git_get_project_description {
1106         my $path = shift;
1107
1108         open my $fd, "$projectroot/$path/description" or return undef;
1109         my $descr = <$fd>;
1110         close $fd;
1111         chomp $descr;
1112         return $descr;
1113 }
1114
1115 sub git_get_project_url_list {
1116         my $path = shift;
1117
1118         open my $fd, "$projectroot/$path/cloneurl" or return;
1119         my @git_project_url_list = map { chomp; $_ } <$fd>;
1120         close $fd;
1121
1122         return wantarray ? @git_project_url_list : \@git_project_url_list;
1123 }
1124
1125 sub git_get_projects_list {
1126         my ($filter) = @_;
1127         my @list;
1128
1129         $filter ||= '';
1130         $filter =~ s/\.git$//;
1131
1132         my ($check_forks) = gitweb_check_feature('forks');
1133
1134         if (-d $projects_list) {
1135                 # search in directory
1136                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1137                 # remove the trailing "/"
1138                 $dir =~ s!/+$!!;
1139                 my $pfxlen = length("$dir");
1140
1141                 File::Find::find({
1142                         follow_fast => 1, # follow symbolic links
1143                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1144                         wanted => sub {
1145                                 # skip project-list toplevel, if we get it.
1146                                 return if (m!^[/.]$!);
1147                                 # only directories can be git repositories
1148                                 return unless (-d $_);
1149
1150                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1151                                 # we check related file in $projectroot
1152                                 if ($check_forks and $subdir =~ m#/.#) {
1153                                         $File::Find::prune = 1;
1154                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1155                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1156                                         $File::Find::prune = 1;
1157                                 }
1158                         },
1159                 }, "$dir");
1160
1161         } elsif (-f $projects_list) {
1162                 # read from file(url-encoded):
1163                 # 'git%2Fgit.git Linus+Torvalds'
1164                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1165                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1166                 my %paths;
1167                 open my ($fd), $projects_list or return;
1168         PROJECT:
1169                 while (my $line = <$fd>) {
1170                         chomp $line;
1171                         my ($path, $owner) = split ' ', $line;
1172                         $path = unescape($path);
1173                         $owner = unescape($owner);
1174                         if (!defined $path) {
1175                                 next;
1176                         }
1177                         if ($filter ne '') {
1178                                 # looking for forks;
1179                                 my $pfx = substr($path, 0, length($filter));
1180                                 if ($pfx ne $filter) {
1181                                         next PROJECT;
1182                                 }
1183                                 my $sfx = substr($path, length($filter));
1184                                 if ($sfx !~ /^\/.*\.git$/) {
1185                                         next PROJECT;
1186                                 }
1187                         } elsif ($check_forks) {
1188                         PATH:
1189                                 foreach my $filter (keys %paths) {
1190                                         # looking for forks;
1191                                         my $pfx = substr($path, 0, length($filter));
1192                                         if ($pfx ne $filter) {
1193                                                 next PATH;
1194                                         }
1195                                         my $sfx = substr($path, length($filter));
1196                                         if ($sfx !~ /^\/.*\.git$/) {
1197                                                 next PATH;
1198                                         }
1199                                         # is a fork, don't include it in
1200                                         # the list
1201                                         next PROJECT;
1202                                 }
1203                         }
1204                         if (check_export_ok("$projectroot/$path")) {
1205                                 my $pr = {
1206                                         path => $path,
1207                                         owner => decode_utf8($owner),
1208                                 };
1209                                 push @list, $pr;
1210                                 (my $forks_path = $path) =~ s/\.git$//;
1211                                 $paths{$forks_path}++;
1212                         }
1213                 }
1214                 close $fd;
1215         }
1216         return @list;
1217 }
1218
1219 sub git_get_project_owner {
1220         my $project = shift;
1221         my $owner;
1222
1223         return undef unless $project;
1224
1225         # read from file (url-encoded):
1226         # 'git%2Fgit.git Linus+Torvalds'
1227         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1228         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1229         if (-f $projects_list) {
1230                 open (my $fd , $projects_list);
1231                 while (my $line = <$fd>) {
1232                         chomp $line;
1233                         my ($pr, $ow) = split ' ', $line;
1234                         $pr = unescape($pr);
1235                         $ow = unescape($ow);
1236                         if ($pr eq $project) {
1237                                 $owner = decode_utf8($ow);
1238                                 last;
1239                         }
1240                 }
1241                 close $fd;
1242         }
1243         if (!defined $owner) {
1244                 $owner = get_file_owner("$projectroot/$project");
1245         }
1246
1247         return $owner;
1248 }
1249
1250 sub git_get_last_activity {
1251         my ($path) = @_;
1252         my $fd;
1253
1254         $git_dir = "$projectroot/$path";
1255         open($fd, "-|", git_cmd(), 'for-each-ref',
1256              '--format=%(committer)',
1257              '--sort=-committerdate',
1258              '--count=1',
1259              'refs/heads') or return;
1260         my $most_recent = <$fd>;
1261         close $fd or return;
1262         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1263                 my $timestamp = $1;
1264                 my $age = time - $timestamp;
1265                 return ($age, age_string($age));
1266         }
1267 }
1268
1269 sub git_get_references {
1270         my $type = shift || "";
1271         my %refs;
1272         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1273         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1274         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1275                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1276                 or return;
1277
1278         while (my $line = <$fd>) {
1279                 chomp $line;
1280                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1281                         if (defined $refs{$1}) {
1282                                 push @{$refs{$1}}, $2;
1283                         } else {
1284                                 $refs{$1} = [ $2 ];
1285                         }
1286                 }
1287         }
1288         close $fd or return;
1289         return \%refs;
1290 }
1291
1292 sub git_get_rev_name_tags {
1293         my $hash = shift || return undef;
1294
1295         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1296                 or return;
1297         my $name_rev = <$fd>;
1298         close $fd;
1299
1300         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1301                 return $1;
1302         } else {
1303                 # catches also '$hash undefined' output
1304                 return undef;
1305         }
1306 }
1307
1308 ## ----------------------------------------------------------------------
1309 ## parse to hash functions
1310
1311 sub parse_date {
1312         my $epoch = shift;
1313         my $tz = shift || "-0000";
1314
1315         my %date;
1316         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1317         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1318         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1319         $date{'hour'} = $hour;
1320         $date{'minute'} = $min;
1321         $date{'mday'} = $mday;
1322         $date{'day'} = $days[$wday];
1323         $date{'month'} = $months[$mon];
1324         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1325                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1326         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1327                              $mday, $months[$mon], $hour ,$min;
1328         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1329                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1330
1331         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1332         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1333         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1334         $date{'hour_local'} = $hour;
1335         $date{'minute_local'} = $min;
1336         $date{'tz_local'} = $tz;
1337         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1338                                   1900+$year, $mon+1, $mday,
1339                                   $hour, $min, $sec, $tz);
1340         return %date;
1341 }
1342
1343 sub parse_tag {
1344         my $tag_id = shift;
1345         my %tag;
1346         my @comment;
1347
1348         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1349         $tag{'id'} = $tag_id;
1350         while (my $line = <$fd>) {
1351                 chomp $line;
1352                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1353                         $tag{'object'} = $1;
1354                 } elsif ($line =~ m/^type (.+)$/) {
1355                         $tag{'type'} = $1;
1356                 } elsif ($line =~ m/^tag (.+)$/) {
1357                         $tag{'name'} = $1;
1358                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1359                         $tag{'author'} = $1;
1360                         $tag{'epoch'} = $2;
1361                         $tag{'tz'} = $3;
1362                 } elsif ($line =~ m/--BEGIN/) {
1363                         push @comment, $line;
1364                         last;
1365                 } elsif ($line eq "") {
1366                         last;
1367                 }
1368         }
1369         push @comment, <$fd>;
1370         $tag{'comment'} = \@comment;
1371         close $fd or return;
1372         if (!defined $tag{'name'}) {
1373                 return
1374         };
1375         return %tag
1376 }
1377
1378 sub parse_commit_text {
1379         my ($commit_text, $withparents) = @_;
1380         my @commit_lines = split '\n', $commit_text;
1381         my %co;
1382
1383         pop @commit_lines; # Remove '\0'
1384
1385         if (! @commit_lines) {
1386                 return;
1387         }
1388
1389         my $header = shift @commit_lines;
1390         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1391                 return;
1392         }
1393         ($co{'id'}, my @parents) = split ' ', $header;
1394         while (my $line = shift @commit_lines) {
1395                 last if $line eq "\n";
1396                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1397                         $co{'tree'} = $1;
1398                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1399                         push @parents, $1;
1400                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1401                         $co{'author'} = $1;
1402                         $co{'author_epoch'} = $2;
1403                         $co{'author_tz'} = $3;
1404                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1405                                 $co{'author_name'}  = $1;
1406                                 $co{'author_email'} = $2;
1407                         } else {
1408                                 $co{'author_name'} = $co{'author'};
1409                         }
1410                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1411                         $co{'committer'} = $1;
1412                         $co{'committer_epoch'} = $2;
1413                         $co{'committer_tz'} = $3;
1414                         $co{'committer_name'} = $co{'committer'};
1415                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1416                                 $co{'committer_name'}  = $1;
1417                                 $co{'committer_email'} = $2;
1418                         } else {
1419                                 $co{'committer_name'} = $co{'committer'};
1420                         }
1421                 }
1422         }
1423         if (!defined $co{'tree'}) {
1424                 return;
1425         };
1426         $co{'parents'} = \@parents;
1427         $co{'parent'} = $parents[0];
1428
1429         foreach my $title (@commit_lines) {
1430                 $title =~ s/^    //;
1431                 if ($title ne "") {
1432                         $co{'title'} = chop_str($title, 80, 5);
1433                         # remove leading stuff of merges to make the interesting part visible
1434                         if (length($title) > 50) {
1435                                 $title =~ s/^Automatic //;
1436                                 $title =~ s/^merge (of|with) /Merge ... /i;
1437                                 if (length($title) > 50) {
1438                                         $title =~ s/(http|rsync):\/\///;
1439                                 }
1440                                 if (length($title) > 50) {
1441                                         $title =~ s/(master|www|rsync)\.//;
1442                                 }
1443                                 if (length($title) > 50) {
1444                                         $title =~ s/kernel.org:?//;
1445                                 }
1446                                 if (length($title) > 50) {
1447                                         $title =~ s/\/pub\/scm//;
1448                                 }
1449                         }
1450                         $co{'title_short'} = chop_str($title, 50, 5);
1451                         last;
1452                 }
1453         }
1454         if ($co{'title'} eq "") {
1455                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1456         }
1457         # remove added spaces
1458         foreach my $line (@commit_lines) {
1459                 $line =~ s/^    //;
1460         }
1461         $co{'comment'} = \@commit_lines;
1462
1463         my $age = time - $co{'committer_epoch'};
1464         $co{'age'} = $age;
1465         $co{'age_string'} = age_string($age);
1466         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1467         if ($age > 60*60*24*7*2) {
1468                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1469                 $co{'age_string_age'} = $co{'age_string'};
1470         } else {
1471                 $co{'age_string_date'} = $co{'age_string'};
1472                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1473         }
1474         return %co;
1475 }
1476
1477 sub parse_commit {
1478         my ($commit_id) = @_;
1479         my %co;
1480
1481         local $/ = "\0";
1482
1483         open my $fd, "-|", git_cmd(), "rev-list",
1484                 "--parents",
1485                 "--header",
1486                 "--max-count=1",
1487                 $commit_id,
1488                 "--",
1489                 or die_error(undef, "Open git-rev-list failed");
1490         %co = parse_commit_text(<$fd>, 1);
1491         close $fd;
1492
1493         return %co;
1494 }
1495
1496 sub parse_commits {
1497         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1498         my @cos;
1499
1500         $maxcount ||= 1;
1501         $skip ||= 0;
1502
1503         local $/ = "\0";
1504
1505         open my $fd, "-|", git_cmd(), "rev-list",
1506                 "--header",
1507                 ($arg ? ($arg) : ()),
1508                 ("--max-count=" . $maxcount),
1509                 ("--skip=" . $skip),
1510                 $commit_id,
1511                 "--",
1512                 ($filename ? ($filename) : ())
1513                 or die_error(undef, "Open git-rev-list failed");
1514         while (my $line = <$fd>) {
1515                 my %co = parse_commit_text($line);
1516                 push @cos, \%co;
1517         }
1518         close $fd;
1519
1520         return wantarray ? @cos : \@cos;
1521 }
1522
1523 # parse ref from ref_file, given by ref_id, with given type
1524 sub parse_ref {
1525         my $ref_file = shift;
1526         my $ref_id = shift;
1527         my $type = shift || git_get_type($ref_id);
1528         my %ref_item;
1529
1530         $ref_item{'type'} = $type;
1531         $ref_item{'id'} = $ref_id;
1532         $ref_item{'epoch'} = 0;
1533         $ref_item{'age'} = "unknown";
1534         if ($type eq "tag") {
1535                 my %tag = parse_tag($ref_id);
1536                 $ref_item{'comment'} = $tag{'comment'};
1537                 if ($tag{'type'} eq "commit") {
1538                         my %co = parse_commit($tag{'object'});
1539                         $ref_item{'epoch'} = $co{'committer_epoch'};
1540                         $ref_item{'age'} = $co{'age_string'};
1541                 } elsif (defined($tag{'epoch'})) {
1542                         my $age = time - $tag{'epoch'};
1543                         $ref_item{'epoch'} = $tag{'epoch'};
1544                         $ref_item{'age'} = age_string($age);
1545                 }
1546                 $ref_item{'reftype'} = $tag{'type'};
1547                 $ref_item{'name'} = $tag{'name'};
1548                 $ref_item{'refid'} = $tag{'object'};
1549         } elsif ($type eq "commit"){
1550                 my %co = parse_commit($ref_id);
1551                 $ref_item{'reftype'} = "commit";
1552                 $ref_item{'name'} = $ref_file;
1553                 $ref_item{'title'} = $co{'title'};
1554                 $ref_item{'refid'} = $ref_id;
1555                 $ref_item{'epoch'} = $co{'committer_epoch'};
1556                 $ref_item{'age'} = $co{'age_string'};
1557         } else {
1558                 $ref_item{'reftype'} = $type;
1559                 $ref_item{'name'} = $ref_file;
1560                 $ref_item{'refid'} = $ref_id;
1561         }
1562
1563         return %ref_item;
1564 }
1565
1566 # parse line of git-diff-tree "raw" output
1567 sub parse_difftree_raw_line {
1568         my $line = shift;
1569         my %res;
1570
1571         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1572         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1573         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1574                 $res{'from_mode'} = $1;
1575                 $res{'to_mode'} = $2;
1576                 $res{'from_id'} = $3;
1577                 $res{'to_id'} = $4;
1578                 $res{'status'} = $5;
1579                 $res{'similarity'} = $6;
1580                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1581                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1582                 } else {
1583                         $res{'file'} = unquote($7);
1584                 }
1585         }
1586         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1587         # combined diff (for merge commit)
1588         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1589                 $res{'nparents'}  = length($1);
1590                 $res{'from_mode'} = [ split(' ', $2) ];
1591                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1592                 $res{'from_id'} = [ split(' ', $3) ];
1593                 $res{'to_id'} = pop @{$res{'from_id'}};
1594                 $res{'status'} = [ split('', $4) ];
1595                 $res{'to_file'} = unquote($5);
1596         }
1597         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1598         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1599                 $res{'commit'} = $1;
1600         }
1601
1602         return wantarray ? %res : \%res;
1603 }
1604
1605 # parse line of git-ls-tree output
1606 sub parse_ls_tree_line ($;%) {
1607         my $line = shift;
1608         my %opts = @_;
1609         my %res;
1610
1611         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1612         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1613
1614         $res{'mode'} = $1;
1615         $res{'type'} = $2;
1616         $res{'hash'} = $3;
1617         if ($opts{'-z'}) {
1618                 $res{'name'} = $4;
1619         } else {
1620                 $res{'name'} = unquote($4);
1621         }
1622
1623         return wantarray ? %res : \%res;
1624 }
1625
1626 ## ......................................................................
1627 ## parse to array of hashes functions
1628
1629 sub git_get_heads_list {
1630         my $limit = shift;
1631         my @headslist;
1632
1633         open my $fd, '-|', git_cmd(), 'for-each-ref',
1634                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1635                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1636                 'refs/heads'
1637                 or return;
1638         while (my $line = <$fd>) {
1639                 my %ref_item;
1640
1641                 chomp $line;
1642                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1643                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1644                 my ($committer, $epoch, $tz) =
1645                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1646                 $name =~ s!^refs/heads/!!;
1647
1648                 $ref_item{'name'}  = $name;
1649                 $ref_item{'id'}    = $hash;
1650                 $ref_item{'title'} = $title || '(no commit message)';
1651                 $ref_item{'epoch'} = $epoch;
1652                 if ($epoch) {
1653                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1654                 } else {
1655                         $ref_item{'age'} = "unknown";
1656                 }
1657
1658                 push @headslist, \%ref_item;
1659         }
1660         close $fd;
1661
1662         return wantarray ? @headslist : \@headslist;
1663 }
1664
1665 sub git_get_tags_list {
1666         my $limit = shift;
1667         my @tagslist;
1668
1669         open my $fd, '-|', git_cmd(), 'for-each-ref',
1670                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1671                 '--format=%(objectname) %(objecttype) %(refname) '.
1672                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1673                 'refs/tags'
1674                 or return;
1675         while (my $line = <$fd>) {
1676                 my %ref_item;
1677
1678                 chomp $line;
1679                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1680                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1681                 my ($creator, $epoch, $tz) =
1682                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1683                 $name =~ s!^refs/tags/!!;
1684
1685                 $ref_item{'type'} = $type;
1686                 $ref_item{'id'} = $id;
1687                 $ref_item{'name'} = $name;
1688                 if ($type eq "tag") {
1689                         $ref_item{'subject'} = $title;
1690                         $ref_item{'reftype'} = $reftype;
1691                         $ref_item{'refid'}   = $refid;
1692                 } else {
1693                         $ref_item{'reftype'} = $type;
1694                         $ref_item{'refid'}   = $id;
1695                 }
1696
1697                 if ($type eq "tag" || $type eq "commit") {
1698                         $ref_item{'epoch'} = $epoch;
1699                         if ($epoch) {
1700                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1701                         } else {
1702                                 $ref_item{'age'} = "unknown";
1703                         }
1704                 }
1705
1706                 push @tagslist, \%ref_item;
1707         }
1708         close $fd;
1709
1710         return wantarray ? @tagslist : \@tagslist;
1711 }
1712
1713 ## ----------------------------------------------------------------------
1714 ## filesystem-related functions
1715
1716 sub get_file_owner {
1717         my $path = shift;
1718
1719         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1720         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1721         if (!defined $gcos) {
1722                 return undef;
1723         }
1724         my $owner = $gcos;
1725         $owner =~ s/[,;].*$//;
1726         return decode_utf8($owner);
1727 }
1728
1729 ## ......................................................................
1730 ## mimetype related functions
1731
1732 sub mimetype_guess_file {
1733         my $filename = shift;
1734         my $mimemap = shift;
1735         -r $mimemap or return undef;
1736
1737         my %mimemap;
1738         open(MIME, $mimemap) or return undef;
1739         while (<MIME>) {
1740                 next if m/^#/; # skip comments
1741                 my ($mime, $exts) = split(/\t+/);
1742                 if (defined $exts) {
1743                         my @exts = split(/\s+/, $exts);
1744                         foreach my $ext (@exts) {
1745                                 $mimemap{$ext} = $mime;
1746                         }
1747                 }
1748         }
1749         close(MIME);
1750
1751         $filename =~ /\.([^.]*)$/;
1752         return $mimemap{$1};
1753 }
1754
1755 sub mimetype_guess {
1756         my $filename = shift;
1757         my $mime;
1758         $filename =~ /\./ or return undef;
1759
1760         if ($mimetypes_file) {
1761                 my $file = $mimetypes_file;
1762                 if ($file !~ m!^/!) { # if it is relative path
1763                         # it is relative to project
1764                         $file = "$projectroot/$project/$file";
1765                 }
1766                 $mime = mimetype_guess_file($filename, $file);
1767         }
1768         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1769         return $mime;
1770 }
1771
1772 sub blob_mimetype {
1773         my $fd = shift;
1774         my $filename = shift;
1775
1776         if ($filename) {
1777                 my $mime = mimetype_guess($filename);
1778                 $mime and return $mime;
1779         }
1780
1781         # just in case
1782         return $default_blob_plain_mimetype unless $fd;
1783
1784         if (-T $fd) {
1785                 return 'text/plain' .
1786                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1787         } elsif (! $filename) {
1788                 return 'application/octet-stream';
1789         } elsif ($filename =~ m/\.png$/i) {
1790                 return 'image/png';
1791         } elsif ($filename =~ m/\.gif$/i) {
1792                 return 'image/gif';
1793         } elsif ($filename =~ m/\.jpe?g$/i) {
1794                 return 'image/jpeg';
1795         } else {
1796                 return 'application/octet-stream';
1797         }
1798 }
1799
1800 ## ======================================================================
1801 ## functions printing HTML: header, footer, error page
1802
1803 sub git_header_html {
1804         my $status = shift || "200 OK";
1805         my $expires = shift;
1806
1807         my $title = "$site_name";
1808         if (defined $project) {
1809                 $title .= " - " . decode_utf8($project);
1810                 if (defined $action) {
1811                         $title .= "/$action";
1812                         if (defined $file_name) {
1813                                 $title .= " - " . esc_path($file_name);
1814                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1815                                         $title .= "/";
1816                                 }
1817                         }
1818                 }
1819         }
1820         my $content_type;
1821         # require explicit support from the UA if we are to send the page as
1822         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1823         # we have to do this because MSIE sometimes globs '*/*', pretending to
1824         # support xhtml+xml but choking when it gets what it asked for.
1825         if (defined $cgi->http('HTTP_ACCEPT') &&
1826             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1827             $cgi->Accept('application/xhtml+xml') != 0) {
1828                 $content_type = 'application/xhtml+xml';
1829         } else {
1830                 $content_type = 'text/html';
1831         }
1832         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1833                            -status=> $status, -expires => $expires);
1834         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1835         print <<EOF;
1836 <?xml version="1.0" encoding="utf-8"?>
1837 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1838 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1839 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1840 <!-- git core binaries version $git_version -->
1841 <head>
1842 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1843 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1844 <meta name="robots" content="index, nofollow"/>
1845 <title>$title</title>
1846 EOF
1847 # print out each stylesheet that exist
1848         if (defined $stylesheet) {
1849 #provides backwards capability for those people who define style sheet in a config file
1850                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1851         } else {
1852                 foreach my $stylesheet (@stylesheets) {
1853                         next unless $stylesheet;
1854                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1855                 }
1856         }
1857         if (defined $project) {
1858                 printf('<link rel="alternate" title="%s log RSS feed" '.
1859                        'href="%s" type="application/rss+xml" />'."\n",
1860                        esc_param($project), href(action=>"rss"));
1861                 printf('<link rel="alternate" title="%s log Atom feed" '.
1862                        'href="%s" type="application/atom+xml" />'."\n",
1863                        esc_param($project), href(action=>"atom"));
1864         } else {
1865                 printf('<link rel="alternate" title="%s projects list" '.
1866                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1867                        $site_name, href(project=>undef, action=>"project_index"));
1868                 printf('<link rel="alternate" title="%s projects feeds" '.
1869                        'href="%s" type="text/x-opml"/>'."\n",
1870                        $site_name, href(project=>undef, action=>"opml"));
1871         }
1872         if (defined $favicon) {
1873                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1874         }
1875
1876         print "</head>\n" .
1877               "<body>\n";
1878
1879         if (-f $site_header) {
1880                 open (my $fd, $site_header);
1881                 print <$fd>;
1882                 close $fd;
1883         }
1884
1885         print "<div class=\"page_header\">\n" .
1886               $cgi->a({-href => esc_url($logo_url),
1887                        -title => $logo_label},
1888                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1889         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1890         if (defined $project) {
1891                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1892                 if (defined $action) {
1893                         print " / $action";
1894                 }
1895                 print "\n";
1896         }
1897         my ($have_search) = gitweb_check_feature('search');
1898         if ((defined $project) && ($have_search)) {
1899                 if (!defined $searchtext) {
1900                         $searchtext = "";
1901                 }
1902                 my $search_hash;
1903                 if (defined $hash_base) {
1904                         $search_hash = $hash_base;
1905                 } elsif (defined $hash) {
1906                         $search_hash = $hash;
1907                 } else {
1908                         $search_hash = "HEAD";
1909                 }
1910                 $cgi->param("a", "search");
1911                 $cgi->param("h", $search_hash);
1912                 $cgi->param("p", $project);
1913                 print $cgi->startform(-method => "get", -action => $my_uri) .
1914                       "<div class=\"search\">\n" .
1915                       $cgi->hidden(-name => "p") . "\n" .
1916                       $cgi->hidden(-name => "a") . "\n" .
1917                       $cgi->hidden(-name => "h") . "\n" .
1918                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1919                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1920                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1921                       " search:\n",
1922                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1923                       "</div>" .
1924                       $cgi->end_form() . "\n";
1925         }
1926         print "</div>\n";
1927 }
1928
1929 sub git_footer_html {
1930         print "<div class=\"page_footer\">\n";
1931         if (defined $project) {
1932                 my $descr = git_get_project_description($project);
1933                 if (defined $descr) {
1934                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1935                 }
1936                 print $cgi->a({-href => href(action=>"rss"),
1937                               -class => "rss_logo"}, "RSS") . " ";
1938                 print $cgi->a({-href => href(action=>"atom"),
1939                               -class => "rss_logo"}, "Atom") . "\n";
1940         } else {
1941                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1942                               -class => "rss_logo"}, "OPML") . " ";
1943                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1944                               -class => "rss_logo"}, "TXT") . "\n";
1945         }
1946         print "</div>\n" ;
1947
1948         if (-f $site_footer) {
1949                 open (my $fd, $site_footer);
1950                 print <$fd>;
1951                 close $fd;
1952         }
1953
1954         print "</body>\n" .
1955               "</html>";
1956 }
1957
1958 sub die_error {
1959         my $status = shift || "403 Forbidden";
1960         my $error = shift || "Malformed query, file missing or permission denied";
1961
1962         git_header_html($status);
1963         print <<EOF;
1964 <div class="page_body">
1965 <br /><br />
1966 $status - $error
1967 <br />
1968 </div>
1969 EOF
1970         git_footer_html();
1971         exit;
1972 }
1973
1974 ## ----------------------------------------------------------------------
1975 ## functions printing or outputting HTML: navigation
1976
1977 sub git_print_page_nav {
1978         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1979         $extra = '' if !defined $extra; # pager or formats
1980
1981         my @navs = qw(summary shortlog log commit commitdiff tree);
1982         if ($suppress) {
1983                 @navs = grep { $_ ne $suppress } @navs;
1984         }
1985
1986         my %arg = map { $_ => {action=>$_} } @navs;
1987         if (defined $head) {
1988                 for (qw(commit commitdiff)) {
1989                         $arg{$_}{'hash'} = $head;
1990                 }
1991                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1992                         for (qw(shortlog log)) {
1993                                 $arg{$_}{'hash'} = $head;
1994                         }
1995                 }
1996         }
1997         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1998         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1999
2000         print "<div class=\"page_nav\">\n" .
2001                 (join " | ",
2002                  map { $_ eq $current ?
2003                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2004                  } @navs);
2005         print "<br/>\n$extra<br/>\n" .
2006               "</div>\n";
2007 }
2008
2009 sub format_paging_nav {
2010         my ($action, $hash, $head, $page, $nrevs) = @_;
2011         my $paging_nav;
2012
2013
2014         if ($hash ne $head || $page) {
2015                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2016         } else {
2017                 $paging_nav .= "HEAD";
2018         }
2019
2020         if ($page > 0) {
2021                 $paging_nav .= " &sdot; " .
2022                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2023                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2024         } else {
2025                 $paging_nav .= " &sdot; prev";
2026         }
2027
2028         if ($nrevs >= (100 * ($page+1)-1)) {
2029                 $paging_nav .= " &sdot; " .
2030                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2031                                  -accesskey => "n", -title => "Alt-n"}, "next");
2032         } else {
2033                 $paging_nav .= " &sdot; next";
2034         }
2035
2036         return $paging_nav;
2037 }
2038
2039 ## ......................................................................
2040 ## functions printing or outputting HTML: div
2041
2042 sub git_print_header_div {
2043         my ($action, $title, $hash, $hash_base) = @_;
2044         my %args = ();
2045
2046         $args{'action'} = $action;
2047         $args{'hash'} = $hash if $hash;
2048         $args{'hash_base'} = $hash_base if $hash_base;
2049
2050         print "<div class=\"header\">\n" .
2051               $cgi->a({-href => href(%args), -class => "title"},
2052               $title ? $title : $action) .
2053               "\n</div>\n";
2054 }
2055
2056 #sub git_print_authorship (\%) {
2057 sub git_print_authorship {
2058         my $co = shift;
2059
2060         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2061         print "<div class=\"author_date\">" .
2062               esc_html($co->{'author_name'}) .
2063               " [$ad{'rfc2822'}";
2064         if ($ad{'hour_local'} < 6) {
2065                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2066                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2067         } else {
2068                 printf(" (%02d:%02d %s)",
2069                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2070         }
2071         print "]</div>\n";
2072 }
2073
2074 sub git_print_page_path {
2075         my $name = shift;
2076         my $type = shift;
2077         my $hb = shift;
2078
2079
2080         print "<div class=\"page_path\">";
2081         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2082                       -title => 'tree root'}, decode_utf8("[$project]"));
2083         print " / ";
2084         if (defined $name) {
2085                 my @dirname = split '/', $name;
2086                 my $basename = pop @dirname;
2087                 my $fullname = '';
2088
2089                 foreach my $dir (@dirname) {
2090                         $fullname .= ($fullname ? '/' : '') . $dir;
2091                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2092                                                      hash_base=>$hb),
2093                                       -title => $fullname}, esc_path($dir));
2094                         print " / ";
2095                 }
2096                 if (defined $type && $type eq 'blob') {
2097                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2098                                                      hash_base=>$hb),
2099                                       -title => $name}, esc_path($basename));
2100                 } elsif (defined $type && $type eq 'tree') {
2101                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2102                                                      hash_base=>$hb),
2103                                       -title => $name}, esc_path($basename));
2104                         print " / ";
2105                 } else {
2106                         print esc_path($basename);
2107                 }
2108         }
2109         print "<br/></div>\n";
2110 }
2111
2112 # sub git_print_log (\@;%) {
2113 sub git_print_log ($;%) {
2114         my $log = shift;
2115         my %opts = @_;
2116
2117         if ($opts{'-remove_title'}) {
2118                 # remove title, i.e. first line of log
2119                 shift @$log;
2120         }
2121         # remove leading empty lines
2122         while (defined $log->[0] && $log->[0] eq "") {
2123                 shift @$log;
2124         }
2125
2126         # print log
2127         my $signoff = 0;
2128         my $empty = 0;
2129         foreach my $line (@$log) {
2130                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2131                         $signoff = 1;
2132                         $empty = 0;
2133                         if (! $opts{'-remove_signoff'}) {
2134                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2135                                 next;
2136                         } else {
2137                                 # remove signoff lines
2138                                 next;
2139                         }
2140                 } else {
2141                         $signoff = 0;
2142                 }
2143
2144                 # print only one empty line
2145                 # do not print empty line after signoff
2146                 if ($line eq "") {
2147                         next if ($empty || $signoff);
2148                         $empty = 1;
2149                 } else {
2150                         $empty = 0;
2151                 }
2152
2153                 print format_log_line_html($line) . "<br/>\n";
2154         }
2155
2156         if ($opts{'-final_empty_line'}) {
2157                 # end with single empty line
2158                 print "<br/>\n" unless $empty;
2159         }
2160 }
2161
2162 # return link target (what link points to)
2163 sub git_get_link_target {
2164         my $hash = shift;
2165         my $link_target;
2166
2167         # read link
2168         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2169                 or return;
2170         {
2171                 local $/;
2172                 $link_target = <$fd>;
2173         }
2174         close $fd
2175                 or return;
2176
2177         return $link_target;
2178 }
2179
2180 # given link target, and the directory (basedir) the link is in,
2181 # return target of link relative to top directory (top tree);
2182 # return undef if it is not possible (including absolute links).
2183 sub normalize_link_target {
2184         my ($link_target, $basedir, $hash_base) = @_;
2185
2186         # we can normalize symlink target only if $hash_base is provided
2187         return unless $hash_base;
2188
2189         # absolute symlinks (beginning with '/') cannot be normalized
2190         return if (substr($link_target, 0, 1) eq '/');
2191
2192         # normalize link target to path from top (root) tree (dir)
2193         my $path;
2194         if ($basedir) {
2195                 $path = $basedir . '/' . $link_target;
2196         } else {
2197                 # we are in top (root) tree (dir)
2198                 $path = $link_target;
2199         }
2200
2201         # remove //, /./, and /../
2202         my @path_parts;
2203         foreach my $part (split('/', $path)) {
2204                 # discard '.' and ''
2205                 next if (!$part || $part eq '.');
2206                 # handle '..'
2207                 if ($part eq '..') {
2208                         if (@path_parts) {
2209                                 pop @path_parts;
2210                         } else {
2211                                 # link leads outside repository (outside top dir)
2212                                 return;
2213                         }
2214                 } else {
2215                         push @path_parts, $part;
2216                 }
2217         }
2218         $path = join('/', @path_parts);
2219
2220         return $path;
2221 }
2222
2223 # print tree entry (row of git_tree), but without encompassing <tr> element
2224 sub git_print_tree_entry {
2225         my ($t, $basedir, $hash_base, $have_blame) = @_;
2226
2227         my %base_key = ();
2228         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2229
2230         # The format of a table row is: mode list link.  Where mode is
2231         # the mode of the entry, list is the name of the entry, an href,
2232         # and link is the action links of the entry.
2233
2234         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2235         if ($t->{'type'} eq "blob") {
2236                 print "<td class=\"list\">" .
2237                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2238                                                file_name=>"$basedir$t->{'name'}", %base_key),
2239                                 -class => "list"}, esc_path($t->{'name'}));
2240                 if (S_ISLNK(oct $t->{'mode'})) {
2241                         my $link_target = git_get_link_target($t->{'hash'});
2242                         if ($link_target) {
2243                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2244                                 if (defined $norm_target) {
2245                                         print " -> " .
2246                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2247                                                                      file_name=>$norm_target),
2248                                                        -title => $norm_target}, esc_path($link_target));
2249                                 } else {
2250                                         print " -> " . esc_path($link_target);
2251                                 }
2252                         }
2253                 }
2254                 print "</td>\n";
2255                 print "<td class=\"link\">";
2256                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2257                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2258                               "blob");
2259                 if ($have_blame) {
2260                         print " | " .
2261                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2262                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2263                                       "blame");
2264                 }
2265                 if (defined $hash_base) {
2266                         print " | " .
2267                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2268                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2269                                       "history");
2270                 }
2271                 print " | " .
2272                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2273                                                file_name=>"$basedir$t->{'name'}")},
2274                                 "raw");
2275                 print "</td>\n";
2276
2277         } elsif ($t->{'type'} eq "tree") {
2278                 print "<td class=\"list\">";
2279                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2280                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2281                               esc_path($t->{'name'}));
2282                 print "</td>\n";
2283                 print "<td class=\"link\">";
2284                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2285                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2286                               "tree");
2287                 if (defined $hash_base) {
2288                         print " | " .
2289                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2290                                                      file_name=>"$basedir$t->{'name'}")},
2291                                       "history");
2292                 }
2293                 print "</td>\n";
2294         }
2295 }
2296
2297 ## ......................................................................
2298 ## functions printing large fragments of HTML
2299
2300 sub fill_from_file_info {
2301         my ($diff, @parents) = @_;
2302
2303         $diff->{'from_file'} = [ ];
2304         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2305         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2306                 if ($diff->{'status'}[$i] eq 'R' ||
2307                     $diff->{'status'}[$i] eq 'C') {
2308                         $diff->{'from_file'}[$i] =
2309                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2310                 }
2311         }
2312
2313         return $diff;
2314 }
2315
2316 # parameters can be strings, or references to arrays of strings
2317 sub from_ids_eq {
2318         my ($a, $b) = @_;
2319
2320         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2321                 for (my $i = 0; $i < @$a; ++$i) {
2322                         return 0 unless ($a->[$i] eq $b->[$i]);
2323                 }
2324                 return 1;
2325         } elsif (!ref($a) && !ref($b)) {
2326                 return $a eq $b;
2327         } else {
2328                 return 0;
2329         }
2330 }
2331
2332
2333 sub git_difftree_body {
2334         my ($difftree, $hash, @parents) = @_;
2335         my ($parent) = $parents[0];
2336         my ($have_blame) = gitweb_check_feature('blame');
2337         print "<div class=\"list_head\">\n";
2338         if ($#{$difftree} > 10) {
2339                 print(($#{$difftree} + 1) . " files changed:\n");
2340         }
2341         print "</div>\n";
2342
2343         print "<table class=\"" .
2344               (@parents > 1 ? "combined " : "") .
2345               "diff_tree\">\n";
2346         my $alternate = 1;
2347         my $patchno = 0;
2348         foreach my $line (@{$difftree}) {
2349                 my $diff;
2350                 if (ref($line) eq "HASH") {
2351                         # pre-parsed (or generated by hand)
2352                         $diff = $line;
2353                 } else {
2354                         $diff = parse_difftree_raw_line($line);
2355                 }
2356
2357                 if ($alternate) {
2358                         print "<tr class=\"dark\">\n";
2359                 } else {
2360                         print "<tr class=\"light\">\n";
2361                 }
2362                 $alternate ^= 1;
2363
2364                 if (exists $diff->{'nparents'}) { # combined diff
2365
2366                         fill_from_file_info($diff, @parents)
2367                                 unless exists $diff->{'from_file'};
2368
2369                         if ($diff->{'to_id'} ne ('0' x 40)) {
2370                                 # file exists in the result (child) commit
2371                                 print "<td>" .
2372                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2373                                                              file_name=>$diff->{'to_file'},
2374                                                              hash_base=>$hash),
2375                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2376                                       "</td>\n";
2377                         } else {
2378                                 print "<td>" .
2379                                       esc_path($diff->{'to_file'}) .
2380                                       "</td>\n";
2381                         }
2382
2383                         if ($action eq 'commitdiff') {
2384                                 # link to patch
2385                                 $patchno++;
2386                                 print "<td class=\"link\">" .
2387                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2388                                       " | " .
2389                                       "</td>\n";
2390                         }
2391
2392                         my $has_history = 0;
2393                         my $not_deleted = 0;
2394                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2395                                 my $hash_parent = $parents[$i];
2396                                 my $from_hash = $diff->{'from_id'}[$i];
2397                                 my $from_path = $diff->{'from_file'}[$i];
2398                                 my $status = $diff->{'status'}[$i];
2399
2400                                 $has_history ||= ($status ne 'A');
2401                                 $not_deleted ||= ($status ne 'D');
2402
2403                                 if ($status eq 'A') {
2404                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2405                                 } elsif ($status eq 'D') {
2406                                         print "<td class=\"link\">" .
2407                                               $cgi->a({-href => href(action=>"blob",
2408                                                                      hash_base=>$hash,
2409                                                                      hash=>$from_hash,
2410                                                                      file_name=>$from_path)},
2411                                                       "blob" . ($i+1)) .
2412                                               " | </td>\n";
2413                                 } else {
2414                                         if ($diff->{'to_id'} eq $from_hash) {
2415                                                 print "<td class=\"link nochange\">";
2416                                         } else {
2417                                                 print "<td class=\"link\">";
2418                                         }
2419                                         print $cgi->a({-href => href(action=>"blobdiff",
2420                                                                      hash=>$diff->{'to_id'},
2421                                                                      hash_parent=>$from_hash,
2422                                                                      hash_base=>$hash,
2423                                                                      hash_parent_base=>$hash_parent,
2424                                                                      file_name=>$diff->{'to_file'},
2425                                                                      file_parent=>$from_path)},
2426                                                       "diff" . ($i+1)) .
2427                                               " | </td>\n";
2428                                 }
2429                         }
2430
2431                         print "<td class=\"link\">";
2432                         if ($not_deleted) {
2433                                 print $cgi->a({-href => href(action=>"blob",
2434                                                              hash=>$diff->{'to_id'},
2435                                                              file_name=>$diff->{'to_file'},
2436                                                              hash_base=>$hash)},
2437                                               "blob");
2438                                 print " | " if ($has_history);
2439                         }
2440                         if ($has_history) {
2441                                 print $cgi->a({-href => href(action=>"history",
2442                                                              file_name=>$diff->{'to_file'},
2443                                                              hash_base=>$hash)},
2444                                               "history");
2445                         }
2446                         print "</td>\n";
2447
2448                         print "</tr>\n";
2449                         next; # instead of 'else' clause, to avoid extra indent
2450                 }
2451                 # else ordinary diff
2452
2453                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2454                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2455                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2456                         $to_mode_oct = oct $diff->{'to_mode'};
2457                         if (S_ISREG($to_mode_oct)) { # only for regular file
2458                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2459                         }
2460                         $to_file_type = file_type($diff->{'to_mode'});
2461                 }
2462                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2463                         $from_mode_oct = oct $diff->{'from_mode'};
2464                         if (S_ISREG($to_mode_oct)) { # only for regular file
2465                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2466                         }
2467                         $from_file_type = file_type($diff->{'from_mode'});
2468                 }
2469
2470                 if ($diff->{'status'} eq "A") { # created
2471                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2472                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2473                         $mode_chng   .= "]</span>";
2474                         print "<td>";
2475                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2476                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2477                                       -class => "list"}, esc_path($diff->{'file'}));
2478                         print "</td>\n";
2479                         print "<td>$mode_chng</td>\n";
2480                         print "<td class=\"link\">";
2481                         if ($action eq 'commitdiff') {
2482                                 # link to patch
2483                                 $patchno++;
2484                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2485                                 print " | ";
2486                         }
2487                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2488                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2489                                       "blob");
2490                         print "</td>\n";
2491
2492                 } elsif ($diff->{'status'} eq "D") { # deleted
2493                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2494                         print "<td>";
2495                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2496                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2497                                        -class => "list"}, esc_path($diff->{'file'}));
2498                         print "</td>\n";
2499                         print "<td>$mode_chng</td>\n";
2500                         print "<td class=\"link\">";
2501                         if ($action eq 'commitdiff') {
2502                                 # link to patch
2503                                 $patchno++;
2504                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2505                                 print " | ";
2506                         }
2507                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2508                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2509                                       "blob") . " | ";
2510                         if ($have_blame) {
2511                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2512                                                              file_name=>$diff->{'file'})},
2513                                               "blame") . " | ";
2514                         }
2515                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2516                                                      file_name=>$diff->{'file'})},
2517                                       "history");
2518                         print "</td>\n";
2519
2520                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2521                         my $mode_chnge = "";
2522                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2523                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2524                                 if ($from_file_type ne $to_file_type) {
2525                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2526                                 }
2527                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2528                                         if ($from_mode_str && $to_mode_str) {
2529                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2530                                         } elsif ($to_mode_str) {
2531                                                 $mode_chnge .= " mode: $to_mode_str";
2532                                         }
2533                                 }
2534                                 $mode_chnge .= "]</span>\n";
2535                         }
2536                         print "<td>";
2537                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2538                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2539                                       -class => "list"}, esc_path($diff->{'file'}));
2540                         print "</td>\n";
2541                         print "<td>$mode_chnge</td>\n";
2542                         print "<td class=\"link\">";
2543                         if ($action eq 'commitdiff') {
2544                                 # link to patch
2545                                 $patchno++;
2546                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2547                                       " | ";
2548                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2549                                 # "commit" view and modified file (not onlu mode changed)
2550                                 print $cgi->a({-href => href(action=>"blobdiff",
2551                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2552                                                              hash_base=>$hash, hash_parent_base=>$parent,
2553                                                              file_name=>$diff->{'file'})},
2554                                               "diff") .
2555                                       " | ";
2556                         }
2557                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2558                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2559                                        "blob") . " | ";
2560                         if ($have_blame) {
2561                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2562                                                              file_name=>$diff->{'file'})},
2563                                               "blame") . " | ";
2564                         }
2565                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2566                                                      file_name=>$diff->{'file'})},
2567                                       "history");
2568                         print "</td>\n";
2569
2570                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2571                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2572                         my $nstatus = $status_name{$diff->{'status'}};
2573                         my $mode_chng = "";
2574                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2575                                 # mode also for directories, so we cannot use $to_mode_str
2576                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2577                         }
2578                         print "<td>" .
2579                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2580                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2581                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2582                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2583                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2584                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2585                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2586                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2587                               "<td class=\"link\">";
2588                         if ($action eq 'commitdiff') {
2589                                 # link to patch
2590                                 $patchno++;
2591                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2592                                       " | ";
2593                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2594                                 # "commit" view and modified file (not only pure rename or copy)
2595                                 print $cgi->a({-href => href(action=>"blobdiff",
2596                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2597                                                              hash_base=>$hash, hash_parent_base=>$parent,
2598                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2599                                               "diff") .
2600                                       " | ";
2601                         }
2602                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2603                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2604                                       "blob") . " | ";
2605                         if ($have_blame) {
2606                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2607                                                              file_name=>$diff->{'to_file'})},
2608                                               "blame") . " | ";
2609                         }
2610                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2611                                                     file_name=>$diff->{'to_file'})},
2612                                       "history");
2613                         print "</td>\n";
2614
2615                 } # we should not encounter Unmerged (U) or Unknown (X) status
2616                 print "</tr>\n";
2617         }
2618         print "</table>\n";
2619 }
2620
2621 sub git_patchset_body {
2622         my ($fd, $difftree, $hash, @hash_parents) = @_;
2623         my ($hash_parent) = $hash_parents[0];
2624
2625         my $patch_idx = 0;
2626         my $patch_number = 0;
2627         my $patch_line;
2628         my $diffinfo;
2629         my (%from, %to);
2630
2631         print "<div class=\"patchset\">\n";
2632
2633         # skip to first patch
2634         while ($patch_line = <$fd>) {
2635                 chomp $patch_line;
2636
2637                 last if ($patch_line =~ m/^diff /);
2638         }
2639
2640  PATCH:
2641         while ($patch_line) {
2642                 my @diff_header;
2643                 my ($from_id, $to_id);
2644
2645                 # git diff header
2646                 #assert($patch_line =~ m/^diff /) if DEBUG;
2647                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2648                 $patch_number++;
2649                 push @diff_header, $patch_line;
2650
2651                 # extended diff header
2652         EXTENDED_HEADER:
2653                 while ($patch_line = <$fd>) {
2654                         chomp $patch_line;
2655
2656                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2657
2658                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2659                                 $from_id = $1;
2660                                 $to_id   = $2;
2661                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2662                                 $from_id = [ split(',', $1) ];
2663                                 $to_id   = $2;
2664                         }
2665
2666                         push @diff_header, $patch_line;
2667                 }
2668                 my $last_patch_line = $patch_line;
2669
2670                 # check if current patch belong to current raw line
2671                 # and parse raw git-diff line if needed
2672                 if (defined $diffinfo &&
2673                     defined $from_id && defined $to_id &&
2674                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2675                     $diffinfo->{'to_id'} eq $to_id) {
2676                         # this is continuation of a split patch
2677                         print "<div class=\"patch cont\">\n";
2678                 } else {
2679                         # advance raw git-diff output if needed
2680                         $patch_idx++ if defined $diffinfo;
2681
2682                         # read and prepare patch information
2683                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2684                                 # pre-parsed (or generated by hand)
2685                                 $diffinfo = $difftree->[$patch_idx];
2686                         } else {
2687                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2688                         }
2689                         if ($diffinfo->{'nparents'}) {
2690                                 # combined diff
2691                                 $from{'file'} = [];
2692                                 $from{'href'} = [];
2693                                 fill_from_file_info($diffinfo, @hash_parents)
2694                                         unless exists $diffinfo->{'from_file'};
2695                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2696                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2697                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2698                                                 $from{'href'}[$i] = href(action=>"blob",
2699                                                                          hash_base=>$hash_parents[$i],
2700                                                                          hash=>$diffinfo->{'from_id'}[$i],
2701                                                                          file_name=>$from{'file'}[$i]);
2702                                         } else {
2703                                                 $from{'href'}[$i] = undef;
2704                                         }
2705                                 }
2706                         } else {
2707                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2708                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2709                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2710                                                              hash=>$diffinfo->{'from_id'},
2711                                                              file_name=>$from{'file'});
2712                                 } else {
2713                                         delete $from{'href'};
2714                                 }
2715                         }
2716                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2717                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2718                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2719                                                    hash=>$diffinfo->{'to_id'},
2720                                                    file_name=>$to{'file'});
2721                         } else {
2722                                 delete $to{'href'};
2723                         }
2724                         # this is first patch for raw difftree line with $patch_idx index
2725                         # we index @$difftree array from 0, but number patches from 1
2726                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2727                 }
2728
2729                 # print "git diff" header
2730                 $patch_line = shift @diff_header;
2731                 if ($diffinfo->{'nparents'}) {
2732
2733                         # combined diff
2734                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2735                         if ($to{'href'}) {
2736                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2737                                                        esc_path($to{'file'}));
2738                         } else { # file was deleted
2739                                 $patch_line .= esc_path($to{'file'});
2740                         }
2741
2742                 } else {
2743
2744                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2745                         if ($from{'href'}) {
2746                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2747                                                        'a/' . esc_path($from{'file'}));
2748                         } else { # file was added
2749                                 $patch_line .= 'a/' . esc_path($from{'file'});
2750                         }
2751                         $patch_line .= ' ';
2752                         if ($to{'href'}) {
2753                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2754                                                        'b/' . esc_path($to{'file'}));
2755                         } else { # file was deleted
2756                                 $patch_line .= 'b/' . esc_path($to{'file'});
2757                         }
2758
2759                 }
2760                 print "<div class=\"diff header\">$patch_line</div>\n";
2761
2762                 # print extended diff header
2763                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2764         EXTENDED_HEADER:
2765                 foreach $patch_line (@diff_header) {
2766                         # match <path>
2767                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2768                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2769                                                        esc_path($from{'file'}));
2770                         }
2771                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2772                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2773                                                        esc_path($to{'file'}));
2774                         }
2775                         # match single <mode>
2776                         if ($patch_line =~ m/\s(\d{6})$/) {
2777                                 $patch_line .= '<span class="info"> (' .
2778                                                file_type_long($1) .
2779                                                ')</span>';
2780                         }
2781                         # match <hash>
2782                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2783                                 # can match only for combined diff
2784                                 $patch_line = 'index ';
2785                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2786                                         if ($from{'href'}[$i]) {
2787                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2788                                                                         -class=>"hash"},
2789                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2790                                         } else {
2791                                                 $patch_line .= '0' x 7;
2792                                         }
2793                                         # separator
2794                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2795                                 }
2796                                 $patch_line .= '..';
2797                                 if ($to{'href'}) {
2798                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2799                                                                substr($diffinfo->{'to_id'},0,7));
2800                                 } else {
2801                                         $patch_line .= '0' x 7;
2802                                 }
2803
2804                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2805                                 # can match only for ordinary diff
2806                                 my ($from_link, $to_link);
2807                                 if ($from{'href'}) {
2808                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2809                                                              substr($diffinfo->{'from_id'},0,7));
2810                                 } else {
2811                                         $from_link = '0' x 7;
2812                                 }
2813                                 if ($to{'href'}) {
2814                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2815                                                            substr($diffinfo->{'to_id'},0,7));
2816                                 } else {
2817                                         $to_link = '0' x 7;
2818                                 }
2819                                 #affirm {
2820                                 #       my ($from_hash, $to_hash) =
2821                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2822                                 #       my ($from_id, $to_id) =
2823                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2824                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2825                                 #} if DEBUG;
2826                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2827                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2828                         }
2829                         print $patch_line . "<br/>\n";
2830                 }
2831                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2832
2833                 # from-file/to-file diff header
2834                 $patch_line = $last_patch_line;
2835                 if (! $patch_line) {
2836                         print "</div>\n"; # class="patch"
2837                         last PATCH;
2838                 }
2839                 next PATCH if ($patch_line =~ m/^diff /);
2840                 #assert($patch_line =~ m/^---/) if DEBUG;
2841                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2842                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2843                         $patch_line = '--- a/' .
2844                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2845                                               esc_path($from{'file'}));
2846                 }
2847                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2848
2849                 $patch_line = <$fd>;
2850                 chomp $patch_line;
2851
2852                 #assert($patch_line =~ m/^+++/) if DEBUG;
2853                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2854                         $patch_line = '+++ b/' .
2855                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2856                                               esc_path($to{'file'}));
2857                 }
2858                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2859
2860                 # the patch itself
2861         LINE:
2862                 while ($patch_line = <$fd>) {
2863                         chomp $patch_line;
2864
2865                         next PATCH if ($patch_line =~ m/^diff /);
2866
2867                         print format_diff_line($patch_line, \%from, \%to);
2868                 }
2869
2870         } continue {
2871                 print "</div>\n"; # class="patch"
2872         }
2873         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2874
2875         print "</div>\n"; # class="patchset"
2876 }
2877
2878 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2879
2880 sub git_project_list_body {
2881         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2882
2883         my ($check_forks) = gitweb_check_feature('forks');
2884
2885         my @projects;
2886         foreach my $pr (@$projlist) {
2887                 my (@aa) = git_get_last_activity($pr->{'path'});
2888                 unless (@aa) {
2889                         next;
2890                 }
2891                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2892                 if (!defined $pr->{'descr'}) {
2893                         my $descr = git_get_project_description($pr->{'path'}) || "";
2894                         $pr->{'descr_long'} = decode_utf8($descr);
2895                         $pr->{'descr'} = chop_str($descr, 25, 5);
2896                 }
2897                 if (!defined $pr->{'owner'}) {
2898                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2899                 }
2900                 if ($check_forks) {
2901                         my $pname = $pr->{'path'};
2902                         if (($pname =~ s/\.git$//) &&
2903                             ($pname !~ /\/$/) &&
2904                             (-d "$projectroot/$pname")) {
2905                                 $pr->{'forks'} = "-d $projectroot/$pname";
2906                         }
2907                         else {
2908                                 $pr->{'forks'} = 0;
2909                         }
2910                 }
2911                 push @projects, $pr;
2912         }
2913
2914         $order ||= $default_projects_order;
2915         $from = 0 unless defined $from;
2916         $to = $#projects if (!defined $to || $#projects < $to);
2917
2918         print "<table class=\"project_list\">\n";
2919         unless ($no_header) {
2920                 print "<tr>\n";
2921                 if ($check_forks) {
2922                         print "<th></th>\n";
2923                 }
2924                 if ($order eq "project") {
2925                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2926                         print "<th>Project</th>\n";
2927                 } else {
2928                         print "<th>" .
2929                               $cgi->a({-href => href(project=>undef, order=>'project'),
2930                                        -class => "header"}, "Project") .
2931                               "</th>\n";
2932                 }
2933                 if ($order eq "descr") {
2934                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2935                         print "<th>Description</th>\n";
2936                 } else {
2937                         print "<th>" .
2938                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2939                                        -class => "header"}, "Description") .
2940                               "</th>\n";
2941                 }
2942                 if ($order eq "owner") {
2943                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2944                         print "<th>Owner</th>\n";
2945                 } else {
2946                         print "<th>" .
2947                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2948                                        -class => "header"}, "Owner") .
2949                               "</th>\n";
2950                 }
2951                 if ($order eq "age") {
2952                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2953                         print "<th>Last Change</th>\n";
2954                 } else {
2955                         print "<th>" .
2956                               $cgi->a({-href => href(project=>undef, order=>'age'),
2957                                        -class => "header"}, "Last Change") .
2958                               "</th>\n";
2959                 }
2960                 print "<th></th>\n" .
2961                       "</tr>\n";
2962         }
2963         my $alternate = 1;
2964         for (my $i = $from; $i <= $to; $i++) {
2965                 my $pr = $projects[$i];
2966                 if ($alternate) {
2967                         print "<tr class=\"dark\">\n";
2968                 } else {
2969                         print "<tr class=\"light\">\n";
2970                 }
2971                 $alternate ^= 1;
2972                 if ($check_forks) {
2973                         print "<td>";
2974                         if ($pr->{'forks'}) {
2975                                 print "<!-- $pr->{'forks'} -->\n";
2976                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2977                         }
2978                         print "</td>\n";
2979                 }
2980                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2981                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2982                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2983                                         -class => "list", -title => $pr->{'descr_long'}},
2984                                         esc_html($pr->{'descr'})) . "</td>\n" .
2985                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2986                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2987                       $pr->{'age_string'} . "</td>\n" .
2988                       "<td class=\"link\">" .
2989                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2990                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2991                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2992                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2993                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2994                       "</td>\n" .
2995                       "</tr>\n";
2996         }
2997         if (defined $extra) {
2998                 print "<tr>\n";
2999                 if ($check_forks) {
3000                         print "<td></td>\n";
3001                 }
3002                 print "<td colspan=\"5\">$extra</td>\n" .
3003                       "</tr>\n";
3004         }
3005         print "</table>\n";
3006 }
3007
3008 sub git_shortlog_body {
3009         # uses global variable $project
3010         my ($commitlist, $from, $to, $refs, $extra) = @_;
3011
3012         my $have_snapshot = gitweb_have_snapshot();
3013
3014         $from = 0 unless defined $from;
3015         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3016
3017         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3018         my $alternate = 1;
3019         for (my $i = $from; $i <= $to; $i++) {
3020                 my %co = %{$commitlist->[$i]};
3021                 my $commit = $co{'id'};
3022                 my $ref = format_ref_marker($refs, $commit);
3023                 if ($alternate) {
3024                         print "<tr class=\"dark\">\n";
3025                 } else {
3026                         print "<tr class=\"light\">\n";
3027                 }
3028                 $alternate ^= 1;
3029                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3030                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3031                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3032                       "<td>";
3033                 print format_subject_html($co{'title'}, $co{'title_short'},
3034                                           href(action=>"commit", hash=>$commit), $ref);
3035                 print "</td>\n" .
3036                       "<td class=\"link\">" .
3037                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3038                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3039                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3040                 if ($have_snapshot) {
3041                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3042                 }
3043                 print "</td>\n" .
3044                       "</tr>\n";
3045         }
3046         if (defined $extra) {
3047                 print "<tr>\n" .
3048                       "<td colspan=\"4\">$extra</td>\n" .
3049                       "</tr>\n";
3050         }
3051         print "</table>\n";
3052 }
3053
3054 sub git_history_body {
3055         # Warning: assumes constant type (blob or tree) during history
3056         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3057
3058         $from = 0 unless defined $from;
3059         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3060
3061         print "<table class=\"history\" cellspacing=\"0\">\n";
3062         my $alternate = 1;
3063         for (my $i = $from; $i <= $to; $i++) {
3064                 my %co = %{$commitlist->[$i]};
3065                 if (!%co) {
3066                         next;
3067                 }
3068                 my $commit = $co{'id'};
3069
3070                 my $ref = format_ref_marker($refs, $commit);
3071
3072                 if ($alternate) {
3073                         print "<tr class=\"dark\">\n";
3074                 } else {
3075                         print "<tr class=\"light\">\n";
3076                 }
3077                 $alternate ^= 1;
3078                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3079                       # shortlog uses      chop_str($co{'author_name'}, 10)
3080                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3081                       "<td>";
3082                 # originally git_history used chop_str($co{'title'}, 50)
3083                 print format_subject_html($co{'title'}, $co{'title_short'},
3084                                           href(action=>"commit", hash=>$commit), $ref);
3085                 print "</td>\n" .
3086                       "<td class=\"link\">" .
3087                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3088                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3089
3090                 if ($ftype eq 'blob') {
3091                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3092                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3093                         if (defined $blob_current && defined $blob_parent &&
3094                                         $blob_current ne $blob_parent) {
3095                                 print " | " .
3096                                         $cgi->a({-href => href(action=>"blobdiff",
3097                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3098                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3099                                                                file_name=>$file_name)},
3100                                                 "diff to current");
3101                         }
3102                 }
3103                 print "</td>\n" .
3104                       "</tr>\n";
3105         }
3106         if (defined $extra) {
3107                 print "<tr>\n" .
3108                       "<td colspan=\"4\">$extra</td>\n" .
3109                       "</tr>\n";
3110         }
3111         print "</table>\n";
3112 }
3113
3114 sub git_tags_body {
3115         # uses global variable $project
3116         my ($taglist, $from, $to, $extra) = @_;
3117         $from = 0 unless defined $from;
3118         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3119
3120         print "<table class=\"tags\" cellspacing=\"0\">\n";
3121         my $alternate = 1;
3122         for (my $i = $from; $i <= $to; $i++) {
3123                 my $entry = $taglist->[$i];
3124                 my %tag = %$entry;
3125                 my $comment = $tag{'subject'};
3126                 my $comment_short;
3127                 if (defined $comment) {
3128                         $comment_short = chop_str($comment, 30, 5);
3129                 }
3130                 if ($alternate) {
3131                         print "<tr class=\"dark\">\n";
3132                 } else {
3133                         print "<tr class=\"light\">\n";
3134                 }
3135                 $alternate ^= 1;
3136                 if (defined $tag{'age'}) {
3137                         print "<td><i>$tag{'age'}</i></td>\n";
3138                 } else {
3139                         print "<td></td>\n";
3140                 }
3141                 print "<td>" .
3142                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3143                                -class => "list name"}, esc_html($tag{'name'})) .
3144                       "</td>\n" .
3145                       "<td>";
3146                 if (defined $comment) {
3147                         print format_subject_html($comment, $comment_short,
3148                                                   href(action=>"tag", hash=>$tag{'id'}));
3149                 }
3150                 print "</td>\n" .
3151                       "<td class=\"selflink\">";
3152                 if ($tag{'type'} eq "tag") {
3153                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3154                 } else {
3155                         print "&nbsp;";
3156                 }
3157                 print "</td>\n" .
3158                       "<td class=\"link\">" . " | " .
3159                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3160                 if ($tag{'reftype'} eq "commit") {
3161                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3162                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3163                 } elsif ($tag{'reftype'} eq "blob") {
3164                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3165                 }
3166                 print "</td>\n" .
3167                       "</tr>";
3168         }
3169         if (defined $extra) {
3170                 print "<tr>\n" .
3171                       "<td colspan=\"5\">$extra</td>\n" .
3172                       "</tr>\n";
3173         }
3174         print "</table>\n";
3175 }
3176
3177 sub git_heads_body {
3178         # uses global variable $project
3179         my ($headlist, $head, $from, $to, $extra) = @_;
3180         $from = 0 unless defined $from;
3181         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3182
3183         print "<table class=\"heads\" cellspacing=\"0\">\n";
3184         my $alternate = 1;
3185         for (my $i = $from; $i <= $to; $i++) {
3186                 my $entry = $headlist->[$i];
3187                 my %ref = %$entry;
3188                 my $curr = $ref{'id'} eq $head;
3189                 if ($alternate) {
3190                         print "<tr class=\"dark\">\n";
3191                 } else {
3192                         print "<tr class=\"light\">\n";
3193                 }
3194                 $alternate ^= 1;
3195                 print "<td><i>$ref{'age'}</i></td>\n" .
3196                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3197                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3198                                -class => "list name"},esc_html($ref{'name'})) .
3199                       "</td>\n" .
3200                       "<td class=\"link\">" .
3201                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3202                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3203                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3204                       "</td>\n" .
3205                       "</tr>";
3206         }
3207         if (defined $extra) {
3208                 print "<tr>\n" .
3209                       "<td colspan=\"3\">$extra</td>\n" .
3210                       "</tr>\n";
3211         }
3212         print "</table>\n";
3213 }
3214
3215 sub git_search_grep_body {
3216         my ($commitlist, $from, $to, $extra) = @_;
3217         $from = 0 unless defined $from;
3218         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3219
3220         print "<table class=\"grep\" cellspacing=\"0\">\n";
3221         my $alternate = 1;
3222         for (my $i = $from; $i <= $to; $i++) {
3223                 my %co = %{$commitlist->[$i]};
3224                 if (!%co) {
3225                         next;
3226                 }
3227                 my $commit = $co{'id'};
3228                 if ($alternate) {
3229                         print "<tr class=\"dark\">\n";
3230                 } else {
3231                         print "<tr class=\"light\">\n";
3232                 }
3233                 $alternate ^= 1;
3234                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3235                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3236                       "<td>" .
3237                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3238                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3239                 my $comment = $co{'comment'};
3240                 foreach my $line (@$comment) {
3241                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3242                                 my $lead = esc_html($1) || "";
3243                                 $lead = chop_str($lead, 30, 10);
3244                                 my $match = esc_html($2) || "";
3245                                 my $trail = esc_html($3) || "";
3246                                 $trail = chop_str($trail, 30, 10);
3247                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3248                                 print chop_str($text, 80, 5) . "<br/>\n";
3249                         }
3250                 }
3251                 print "</td>\n" .
3252                       "<td class=\"link\">" .
3253                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3254                       " | " .
3255                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3256                 print "</td>\n" .
3257                       "</tr>\n";
3258         }
3259         if (defined $extra) {
3260                 print "<tr>\n" .
3261                       "<td colspan=\"3\">$extra</td>\n" .
3262                       "</tr>\n";
3263         }
3264         print "</table>\n";
3265 }
3266
3267 ## ======================================================================
3268 ## ======================================================================
3269 ## actions
3270
3271 sub git_project_list {
3272         my $order = $cgi->param('o');
3273         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3274                 die_error(undef, "Unknown order parameter");
3275         }
3276
3277         my @list = git_get_projects_list();
3278         if (!@list) {
3279                 die_error(undef, "No projects found");
3280         }
3281
3282         git_header_html();
3283         if (-f $home_text) {
3284                 print "<div class=\"index_include\">\n";
3285                 open (my $fd, $home_text);
3286                 print <$fd>;
3287                 close $fd;
3288                 print "</div>\n";
3289         }
3290         git_project_list_body(\@list, $order);
3291         git_footer_html();
3292 }
3293
3294 sub git_forks {
3295         my $order = $cgi->param('o');
3296         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3297                 die_error(undef, "Unknown order parameter");
3298         }
3299
3300         my @list = git_get_projects_list($project);
3301         if (!@list) {
3302                 die_error(undef, "No forks found");
3303         }
3304
3305         git_header_html();
3306         git_print_page_nav('','');
3307         git_print_header_div('summary', "$project forks");
3308         git_project_list_body(\@list, $order);
3309         git_footer_html();
3310 }
3311
3312 sub git_project_index {
3313         my @projects = git_get_projects_list($project);
3314
3315         print $cgi->header(
3316                 -type => 'text/plain',
3317                 -charset => 'utf-8',
3318                 -content_disposition => 'inline; filename="index.aux"');
3319
3320         foreach my $pr (@projects) {
3321                 if (!exists $pr->{'owner'}) {
3322                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3323                 }
3324
3325                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3326                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3327                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3328                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3329                 $path  =~ s/ /\+/g;
3330                 $owner =~ s/ /\+/g;
3331
3332                 print "$path $owner\n";
3333         }
3334 }
3335
3336 sub git_summary {
3337         my $descr = git_get_project_description($project) || "none";
3338         my %co = parse_commit("HEAD");
3339         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3340         my $head = $co{'id'};
3341
3342         my $owner = git_get_project_owner($project);
3343
3344         my $refs = git_get_references();
3345         # These get_*_list functions return one more to allow us to see if
3346         # there are more ...
3347         my @taglist  = git_get_tags_list(16);
3348         my @headlist = git_get_heads_list(16);
3349         my @forklist;
3350         my ($check_forks) = gitweb_check_feature('forks');
3351
3352         if ($check_forks) {
3353                 @forklist = git_get_projects_list($project);
3354         }
3355
3356         git_header_html();
3357         git_print_page_nav('summary','', $head);
3358
3359         print "<div class=\"title\">&nbsp;</div>\n";
3360         print "<table cellspacing=\"0\">\n" .
3361               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3362               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3363               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3364         # use per project git URL list in $projectroot/$project/cloneurl
3365         # or make project git URL from git base URL and project name
3366         my $url_tag = "URL";
3367         my @url_list = git_get_project_url_list($project);
3368         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3369         foreach my $git_url (@url_list) {
3370                 next unless $git_url;
3371                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3372                 $url_tag = "";
3373         }
3374         print "</table>\n";
3375
3376         if (-s "$projectroot/$project/README.html") {
3377                 if (open my $fd, "$projectroot/$project/README.html") {
3378                         print "<div class=\"title\">readme</div>\n";
3379                         print $_ while (<$fd>);
3380                         close $fd;
3381                 }
3382         }
3383
3384         # we need to request one more than 16 (0..15) to check if
3385         # those 16 are all
3386         my @commitlist = parse_commits($head, 17);
3387         git_print_header_div('shortlog');
3388         git_shortlog_body(\@commitlist, 0, 15, $refs,
3389                           $#commitlist <=  15 ? undef :
3390                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3391
3392         if (@taglist) {
3393                 git_print_header_div('tags');
3394                 git_tags_body(\@taglist, 0, 15,
3395                               $#taglist <=  15 ? undef :
3396                               $cgi->a({-href => href(action=>"tags")}, "..."));
3397         }
3398
3399         if (@headlist) {
3400                 git_print_header_div('heads');
3401                 git_heads_body(\@headlist, $head, 0, 15,
3402                                $#headlist <= 15 ? undef :
3403                                $cgi->a({-href => href(action=>"heads")}, "..."));
3404         }
3405
3406         if (@forklist) {
3407                 git_print_header_div('forks');
3408                 git_project_list_body(\@forklist, undef, 0, 15,
3409                                       $#forklist <= 15 ? undef :
3410                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3411                                       'noheader');
3412         }
3413
3414         git_footer_html();
3415 }
3416
3417 sub git_tag {
3418         my $head = git_get_head_hash($project);
3419         git_header_html();
3420         git_print_page_nav('','', $head,undef,$head);
3421         my %tag = parse_tag($hash);
3422
3423         if (! %tag) {
3424                 die_error(undef, "Unknown tag object");
3425         }
3426
3427         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3428         print "<div class=\"title_text\">\n" .
3429               "<table cellspacing=\"0\">\n" .
3430               "<tr>\n" .
3431               "<td>object</td>\n" .
3432               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3433                                $tag{'object'}) . "</td>\n" .
3434               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3435                                               $tag{'type'}) . "</td>\n" .
3436               "</tr>\n";
3437         if (defined($tag{'author'})) {
3438                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3439                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3440                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3441                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3442                         "</td></tr>\n";
3443         }
3444         print "</table>\n\n" .
3445               "</div>\n";
3446         print "<div class=\"page_body\">";
3447         my $comment = $tag{'comment'};
3448         foreach my $line (@$comment) {
3449                 chomp $line;
3450                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3451         }
3452         print "</div>\n";
3453         git_footer_html();
3454 }
3455
3456 sub git_blame2 {
3457         my $fd;
3458         my $ftype;
3459
3460         my ($have_blame) = gitweb_check_feature('blame');
3461         if (!$have_blame) {
3462                 die_error('403 Permission denied', "Permission denied");
3463         }
3464         die_error('404 Not Found', "File name not defined") if (!$file_name);
3465         $hash_base ||= git_get_head_hash($project);
3466         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3467         my %co = parse_commit($hash_base)
3468                 or die_error(undef, "Reading commit failed");
3469         if (!defined $hash) {
3470                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3471                         or die_error(undef, "Error looking up file");
3472         }
3473         $ftype = git_get_type($hash);
3474         if ($ftype !~ "blob") {
3475                 die_error('400 Bad Request', "Object is not a blob");
3476         }
3477         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3478               $file_name, $hash_base)
3479                 or die_error(undef, "Open git-blame failed");
3480         git_header_html();
3481         my $formats_nav =
3482                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3483                         "blob") .
3484                 " | " .
3485                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3486                         "history") .
3487                 " | " .
3488                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3489                         "HEAD");
3490         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3491         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3492         git_print_page_path($file_name, $ftype, $hash_base);
3493         my @rev_color = (qw(light2 dark2));
3494         my $num_colors = scalar(@rev_color);
3495         my $current_color = 0;
3496         my $last_rev;
3497         print <<HTML;
3498 <div class="page_body">
3499 <table class="blame">
3500 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3501 HTML
3502         my %metainfo = ();
3503         while (1) {
3504                 $_ = <$fd>;
3505                 last unless defined $_;
3506                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3507                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3508                 if (!exists $metainfo{$full_rev}) {
3509                         $metainfo{$full_rev} = {};
3510                 }
3511                 my $meta = $metainfo{$full_rev};
3512                 while (<$fd>) {
3513                         last if (s/^\t//);
3514                         if (/^(\S+) (.*)$/) {
3515                                 $meta->{$1} = $2;
3516                         }
3517                 }
3518                 my $data = $_;
3519                 chomp $data;
3520                 my $rev = substr($full_rev, 0, 8);
3521                 my $author = $meta->{'author'};
3522                 my %date = parse_date($meta->{'author-time'},
3523                                       $meta->{'author-tz'});
3524                 my $date = $date{'iso-tz'};
3525                 if ($group_size) {
3526                         $current_color = ++$current_color % $num_colors;
3527                 }
3528                 print "<tr class=\"$rev_color[$current_color]\">\n";
3529                 if ($group_size) {
3530                         print "<td class=\"sha1\"";
3531                         print " title=\"". esc_html($author) . ", $date\"";
3532                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3533                         print ">";
3534                         print $cgi->a({-href => href(action=>"commit",
3535                                                      hash=>$full_rev,
3536                                                      file_name=>$file_name)},
3537                                       esc_html($rev));
3538                         print "</td>\n";
3539                 }
3540                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3541                         or die_error(undef, "Open git-rev-parse failed");
3542                 my $parent_commit = <$dd>;
3543                 close $dd;
3544                 chomp($parent_commit);
3545                 my $blamed = href(action => 'blame',
3546                                   file_name => $meta->{'filename'},
3547                                   hash_base => $parent_commit);
3548                 print "<td class=\"linenr\">";
3549                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3550                                 -id => "l$lineno",
3551                                 -class => "linenr" },
3552                               esc_html($lineno));
3553                 print "</td>";
3554                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3555                 print "</tr>\n";
3556         }
3557         print "</table>\n";
3558         print "</div>";
3559         close $fd
3560                 or print "Reading blob failed\n";
3561         git_footer_html();
3562 }
3563
3564 sub git_blame {
3565         my $fd;
3566
3567         my ($have_blame) = gitweb_check_feature('blame');
3568         if (!$have_blame) {
3569                 die_error('403 Permission denied', "Permission denied");
3570         }
3571         die_error('404 Not Found', "File name not defined") if (!$file_name);
3572         $hash_base ||= git_get_head_hash($project);
3573         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3574         my %co = parse_commit($hash_base)
3575                 or die_error(undef, "Reading commit failed");
3576         if (!defined $hash) {
3577                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3578                         or die_error(undef, "Error lookup file");
3579         }
3580         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3581                 or die_error(undef, "Open git-annotate failed");
3582         git_header_html();
3583         my $formats_nav =
3584                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3585                         "blob") .
3586                 " | " .
3587                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3588                         "history") .
3589                 " | " .
3590                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3591                         "HEAD");
3592         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3593         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3594         git_print_page_path($file_name, 'blob', $hash_base);
3595         print "<div class=\"page_body\">\n";
3596         print <<HTML;
3597 <table class="blame">
3598   <tr>
3599     <th>Commit</th>
3600     <th>Age</th>
3601     <th>Author</th>
3602     <th>Line</th>
3603     <th>Data</th>
3604   </tr>
3605 HTML
3606         my @line_class = (qw(light dark));
3607         my $line_class_len = scalar (@line_class);
3608         my $line_class_num = $#line_class;
3609         while (my $line = <$fd>) {
3610                 my $long_rev;
3611                 my $short_rev;
3612                 my $author;
3613                 my $time;
3614                 my $lineno;
3615                 my $data;
3616                 my $age;
3617                 my $age_str;
3618                 my $age_class;
3619
3620                 chomp $line;
3621                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3622
3623                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3624                         $long_rev = $1;
3625                         $author   = $2;
3626                         $time     = $3;
3627                         $lineno   = $4;
3628                         $data     = $5;
3629                 } else {
3630                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3631                         next;
3632                 }
3633                 $short_rev  = substr ($long_rev, 0, 8);
3634                 $age        = time () - $time;
3635                 $age_str    = age_string ($age);
3636                 $age_str    =~ s/ /&nbsp;/g;
3637                 $age_class  = age_class($age);
3638                 $author     = esc_html ($author);
3639                 $author     =~ s/ /&nbsp;/g;
3640
3641                 $data = untabify($data);
3642                 $data = esc_html ($data);
3643
3644                 print <<HTML;
3645   <tr class="$line_class[$line_class_num]">
3646     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3647     <td class="$age_class">$age_str</td>
3648     <td>$author</td>
3649     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3650     <td class="pre">$data</td>
3651   </tr>
3652 HTML
3653         } # while (my $line = <$fd>)
3654         print "</table>\n\n";
3655         close $fd
3656                 or print "Reading blob failed.\n";
3657         print "</div>";
3658         git_footer_html();
3659 }
3660
3661 sub git_tags {
3662         my $head = git_get_head_hash($project);
3663         git_header_html();
3664         git_print_page_nav('','', $head,undef,$head);
3665         git_print_header_div('summary', $project);
3666
3667         my @tagslist = git_get_tags_list();
3668         if (@tagslist) {
3669                 git_tags_body(\@tagslist);
3670         }
3671         git_footer_html();
3672 }
3673
3674 sub git_heads {
3675         my $head = git_get_head_hash($project);
3676         git_header_html();
3677         git_print_page_nav('','', $head,undef,$head);
3678         git_print_header_div('summary', $project);
3679
3680         my @headslist = git_get_heads_list();
3681         if (@headslist) {
3682                 git_heads_body(\@headslist, $head);
3683         }
3684         git_footer_html();
3685 }
3686
3687 sub git_blob_plain {
3688         my $expires;
3689
3690         if (!defined $hash) {
3691                 if (defined $file_name) {
3692                         my $base = $hash_base || git_get_head_hash($project);
3693                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3694                                 or die_error(undef, "Error lookup file");
3695                 } else {
3696                         die_error(undef, "No file name defined");
3697                 }
3698         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3699                 # blobs defined by non-textual hash id's can be cached
3700                 $expires = "+1d";
3701         }
3702
3703         my $type = shift;
3704         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3705                 or die_error(undef, "Couldn't cat $file_name, $hash");
3706
3707         $type ||= blob_mimetype($fd, $file_name);
3708
3709         # save as filename, even when no $file_name is given
3710         my $save_as = "$hash";
3711         if (defined $file_name) {
3712                 $save_as = $file_name;
3713         } elsif ($type =~ m/^text\//) {
3714                 $save_as .= '.txt';
3715         }
3716
3717         print $cgi->header(
3718                 -type => "$type",
3719                 -expires=>$expires,
3720                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3721         undef $/;
3722         binmode STDOUT, ':raw';
3723         print <$fd>;
3724         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3725         $/ = "\n";
3726         close $fd;
3727 }
3728
3729 sub git_blob {
3730         my $expires;
3731
3732         if (!defined $hash) {
3733                 if (defined $file_name) {
3734                         my $base = $hash_base || git_get_head_hash($project);
3735                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3736                                 or die_error(undef, "Error lookup file");
3737                 } else {
3738                         die_error(undef, "No file name defined");
3739                 }
3740         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3741                 # blobs defined by non-textual hash id's can be cached
3742                 $expires = "+1d";
3743         }
3744
3745         my ($have_blame) = gitweb_check_feature('blame');
3746         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3747                 or die_error(undef, "Couldn't cat $file_name, $hash");
3748         my $mimetype = blob_mimetype($fd, $file_name);
3749         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3750                 close $fd;
3751                 return git_blob_plain($mimetype);
3752         }
3753         # we can have blame only for text/* mimetype
3754         $have_blame &&= ($mimetype =~ m!^text/!);
3755
3756         git_header_html(undef, $expires);
3757         my $formats_nav = '';
3758         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3759                 if (defined $file_name) {
3760                         if ($have_blame) {
3761                                 $formats_nav .=
3762                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3763                                                                hash=>$hash, file_name=>$file_name)},
3764                                                 "blame") .
3765                                         " | ";
3766                         }
3767                         $formats_nav .=
3768                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3769                                                        hash=>$hash, file_name=>$file_name)},
3770                                         "history") .
3771                                 " | " .
3772                                 $cgi->a({-href => href(action=>"blob_plain",
3773                                                        hash=>$hash, file_name=>$file_name)},
3774                                         "raw") .
3775                                 " | " .
3776                                 $cgi->a({-href => href(action=>"blob",
3777                                                        hash_base=>"HEAD", file_name=>$file_name)},
3778                                         "HEAD");
3779                 } else {
3780                         $formats_nav .=
3781                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3782                 }
3783                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3784                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3785         } else {
3786                 print "<div class=\"page_nav\">\n" .
3787                       "<br/><br/></div>\n" .
3788                       "<div class=\"title\">$hash</div>\n";
3789         }
3790         git_print_page_path($file_name, "blob", $hash_base);
3791         print "<div class=\"page_body\">\n";
3792         if ($mimetype =~ m!^text/!) {
3793                 my $nr;
3794                 while (my $line = <$fd>) {
3795                         chomp $line;
3796                         $nr++;
3797                         $line = untabify($line);
3798                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3799                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3800                 }
3801         } elsif ($mimetype =~ m!^image/!) {
3802                 print qq!<img type="$mimetype"!;
3803                 if ($file_name) {
3804                         print qq! alt="$file_name" title="$file_name"!;
3805                 }
3806                 print qq! src="! .
3807                       href(action=>"blob_plain", hash=>$hash,
3808                            hash_base=>$hash_base, file_name=>$file_name) .
3809                       qq!" />\n!;
3810         }
3811         close $fd
3812                 or print "Reading blob failed.\n";
3813         print "</div>";
3814         git_footer_html();
3815 }
3816
3817 sub git_tree {
3818         my $have_snapshot = gitweb_have_snapshot();
3819
3820         if (!defined $hash_base) {
3821                 $hash_base = "HEAD";
3822         }
3823         if (!defined $hash) {
3824                 if (defined $file_name) {
3825                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3826                 } else {
3827                         $hash = $hash_base;
3828                 }
3829         }
3830         $/ = "\0";
3831         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3832                 or die_error(undef, "Open git-ls-tree failed");
3833         my @entries = map { chomp; $_ } <$fd>;
3834         close $fd or die_error(undef, "Reading tree failed");
3835         $/ = "\n";
3836
3837         my $refs = git_get_references();
3838         my $ref = format_ref_marker($refs, $hash_base);
3839         git_header_html();
3840         my $basedir = '';
3841         my ($have_blame) = gitweb_check_feature('blame');
3842         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3843                 my @views_nav = ();
3844                 if (defined $file_name) {
3845                         push @views_nav,
3846                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3847                                                        hash=>$hash, file_name=>$file_name)},
3848                                         "history"),
3849                                 $cgi->a({-href => href(action=>"tree",
3850                                                        hash_base=>"HEAD", file_name=>$file_name)},
3851                                         "HEAD"),
3852                 }
3853                 if ($have_snapshot) {
3854                         # FIXME: Should be available when we have no hash base as well.
3855                         push @views_nav,
3856                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3857                                         "snapshot");
3858                 }
3859                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3860                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3861         } else {
3862                 undef $hash_base;
3863                 print "<div class=\"page_nav\">\n";
3864                 print "<br/><br/></div>\n";
3865                 print "<div class=\"title\">$hash</div>\n";
3866         }
3867         if (defined $file_name) {
3868                 $basedir = $file_name;
3869                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3870                         $basedir .= '/';
3871                 }
3872         }
3873         git_print_page_path($file_name, 'tree', $hash_base);
3874         print "<div class=\"page_body\">\n";
3875         print "<table cellspacing=\"0\">\n";
3876         my $alternate = 1;
3877         # '..' (top directory) link if possible
3878         if (defined $hash_base &&
3879             defined $file_name && $file_name =~ m![^/]+$!) {
3880                 if ($alternate) {
3881                         print "<tr class=\"dark\">\n";
3882                 } else {
3883                         print "<tr class=\"light\">\n";
3884                 }
3885                 $alternate ^= 1;
3886
3887                 my $up = $file_name;
3888                 $up =~ s!/?[^/]+$!!;
3889                 undef $up unless $up;
3890                 # based on git_print_tree_entry
3891                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3892                 print '<td class="list">';
3893                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3894                                              file_name=>$up)},
3895                               "..");
3896                 print "</td>\n";
3897                 print "<td class=\"link\"></td>\n";
3898
3899                 print "</tr>\n";
3900         }
3901         foreach my $line (@entries) {
3902                 my %t = parse_ls_tree_line($line, -z => 1);
3903
3904                 if ($alternate) {
3905                         print "<tr class=\"dark\">\n";
3906                 } else {
3907                         print "<tr class=\"light\">\n";
3908                 }
3909                 $alternate ^= 1;
3910
3911                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3912
3913                 print "</tr>\n";
3914         }
3915         print "</table>\n" .
3916               "</div>";
3917         git_footer_html();
3918 }
3919
3920 sub git_snapshot {
3921         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3922         my $have_snapshot = (defined $ctype && defined $suffix);
3923         if (!$have_snapshot) {
3924                 die_error('403 Permission denied', "Permission denied");
3925         }
3926
3927         if (!defined $hash) {
3928                 $hash = git_get_head_hash($project);
3929         }
3930
3931         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3932
3933         print $cgi->header(
3934                 -type => "application/$ctype",
3935                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3936                 -status => '200 OK');
3937
3938         my $git = git_cmd_str();
3939         my $name = $project;
3940         $name =~ s/\047/\047\\\047\047/g;
3941         open my $fd, "-|",
3942                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3943                 or die_error(undef, "Execute git-tar-tree failed");
3944         binmode STDOUT, ':raw';
3945         print <$fd>;
3946         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3947         close $fd;
3948
3949 }
3950
3951 sub git_log {
3952         my $head = git_get_head_hash($project);
3953         if (!defined $hash) {
3954                 $hash = $head;
3955         }
3956         if (!defined $page) {
3957                 $page = 0;
3958         }
3959         my $refs = git_get_references();
3960
3961         my @commitlist = parse_commits($hash, 101, (100 * $page));
3962
3963         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3964
3965         git_header_html();
3966         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3967
3968         if (!@commitlist) {
3969                 my %co = parse_commit($hash);
3970
3971                 git_print_header_div('summary', $project);
3972                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3973         }
3974         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3975         for (my $i = 0; $i <= $to; $i++) {
3976                 my %co = %{$commitlist[$i]};
3977                 next if !%co;
3978                 my $commit = $co{'id'};
3979                 my $ref = format_ref_marker($refs, $commit);
3980                 my %ad = parse_date($co{'author_epoch'});
3981                 git_print_header_div('commit',
3982                                "<span class=\"age\">$co{'age_string'}</span>" .
3983                                esc_html($co{'title'}) . $ref,
3984                                $commit);
3985                 print "<div class=\"title_text\">\n" .
3986                       "<div class=\"log_link\">\n" .
3987                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3988                       " | " .
3989                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3990                       " | " .
3991                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3992                       "<br/>\n" .
3993                       "</div>\n" .
3994                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3995                       "</div>\n";
3996
3997                 print "<div class=\"log_body\">\n";
3998                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3999                 print "</div>\n";
4000         }
4001         if ($#commitlist >= 100) {
4002                 print "<div class=\"page_nav\">\n";
4003                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4004                                -accesskey => "n", -title => "Alt-n"}, "next");
4005                 print "</div>\n";
4006         }
4007         git_footer_html();
4008 }
4009
4010 sub git_commit {
4011         $hash ||= $hash_base || "HEAD";
4012         my %co = parse_commit($hash);
4013         if (!%co) {
4014                 die_error(undef, "Unknown commit object");
4015         }
4016         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4017         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4018
4019         my $parent  = $co{'parent'};
4020         my $parents = $co{'parents'}; # listref
4021
4022         # we need to prepare $formats_nav before any parameter munging
4023         my $formats_nav;
4024         if (!defined $parent) {
4025                 # --root commitdiff
4026                 $formats_nav .= '(initial)';
4027         } elsif (@$parents == 1) {
4028                 # single parent commit
4029                 $formats_nav .=
4030                         '(parent: ' .
4031                         $cgi->a({-href => href(action=>"commit",
4032                                                hash=>$parent)},
4033                                 esc_html(substr($parent, 0, 7))) .
4034                         ')';
4035         } else {
4036                 # merge commit
4037                 $formats_nav .=
4038                         '(merge: ' .
4039                         join(' ', map {
4040                                 $cgi->a({-href => href(action=>"commit",
4041                                                        hash=>$_)},
4042                                         esc_html(substr($_, 0, 7)));
4043                         } @$parents ) .
4044                         ')';
4045         }
4046
4047         if (!defined $parent) {
4048                 $parent = "--root";
4049         }
4050         my @difftree;
4051         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4052                 @diff_opts,
4053                 (@$parents <= 1 ? $parent : '-c'),
4054                 $hash, "--"
4055                 or die_error(undef, "Open git-diff-tree failed");
4056         @difftree = map { chomp; $_ } <$fd>;
4057         close $fd or die_error(undef, "Reading git-diff-tree failed");
4058
4059         # non-textual hash id's can be cached
4060         my $expires;
4061         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4062                 $expires = "+1d";
4063         }
4064         my $refs = git_get_references();
4065         my $ref = format_ref_marker($refs, $co{'id'});
4066
4067         my $have_snapshot = gitweb_have_snapshot();
4068
4069         git_header_html(undef, $expires);
4070         git_print_page_nav('commit', '',
4071                            $hash, $co{'tree'}, $hash,
4072                            $formats_nav);
4073
4074         if (defined $co{'parent'}) {
4075                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4076         } else {
4077                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4078         }
4079         print "<div class=\"title_text\">\n" .
4080               "<table cellspacing=\"0\">\n";
4081         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4082               "<tr>" .
4083               "<td></td><td> $ad{'rfc2822'}";
4084         if ($ad{'hour_local'} < 6) {
4085                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4086                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4087         } else {
4088                 printf(" (%02d:%02d %s)",
4089                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4090         }
4091         print "</td>" .
4092               "</tr>\n";
4093         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4094         print "<tr><td></td><td> $cd{'rfc2822'}" .
4095               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4096               "</td></tr>\n";
4097         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4098         print "<tr>" .
4099               "<td>tree</td>" .
4100               "<td class=\"sha1\">" .
4101               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4102                        class => "list"}, $co{'tree'}) .
4103               "</td>" .
4104               "<td class=\"link\">" .
4105               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4106                       "tree");
4107         if ($have_snapshot) {
4108                 print " | " .
4109                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4110         }
4111         print "</td>" .
4112               "</tr>\n";
4113
4114         foreach my $par (@$parents) {
4115                 print "<tr>" .
4116                       "<td>parent</td>" .
4117                       "<td class=\"sha1\">" .
4118                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4119                                class => "list"}, $par) .
4120                       "</td>" .
4121                       "<td class=\"link\">" .
4122                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4123                       " | " .
4124                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4125                       "</td>" .
4126                       "</tr>\n";
4127         }
4128         print "</table>".
4129               "</div>\n";
4130
4131         print "<div class=\"page_body\">\n";
4132         git_print_log($co{'comment'});
4133         print "</div>\n";
4134
4135         git_difftree_body(\@difftree, $hash, @$parents);
4136
4137         git_footer_html();
4138 }
4139
4140 sub git_object {
4141         # object is defined by:
4142         # - hash or hash_base alone
4143         # - hash_base and file_name
4144         my $type;
4145
4146         # - hash or hash_base alone
4147         if ($hash || ($hash_base && !defined $file_name)) {
4148                 my $object_id = $hash || $hash_base;
4149
4150                 my $git_command = git_cmd_str();
4151                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4152                         or die_error('404 Not Found', "Object does not exist");
4153                 $type = <$fd>;
4154                 chomp $type;
4155                 close $fd
4156                         or die_error('404 Not Found', "Object does not exist");
4157
4158         # - hash_base and file_name
4159         } elsif ($hash_base && defined $file_name) {
4160                 $file_name =~ s,/+$,,;
4161
4162                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4163                         or die_error('404 Not Found', "Base object does not exist");
4164
4165                 # here errors should not hapen
4166                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4167                         or die_error(undef, "Open git-ls-tree failed");
4168                 my $line = <$fd>;
4169                 close $fd;
4170
4171                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4172                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4173                         die_error('404 Not Found', "File or directory for given base does not exist");
4174                 }
4175                 $type = $2;
4176                 $hash = $3;
4177         } else {
4178                 die_error('404 Not Found', "Not enough information to find object");
4179         }
4180
4181         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4182                                           hash=>$hash, hash_base=>$hash_base,
4183                                           file_name=>$file_name),
4184                              -status => '302 Found');
4185 }
4186
4187 sub git_blobdiff {
4188         my $format = shift || 'html';
4189
4190         my $fd;
4191         my @difftree;
4192         my %diffinfo;
4193         my $expires;
4194
4195         # preparing $fd and %diffinfo for git_patchset_body
4196         # new style URI
4197         if (defined $hash_base && defined $hash_parent_base) {
4198                 if (defined $file_name) {
4199                         # read raw output
4200                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4201                                 $hash_parent_base, $hash_base,
4202                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4203                                 or die_error(undef, "Open git-diff-tree failed");
4204                         @difftree = map { chomp; $_ } <$fd>;
4205                         close $fd
4206                                 or die_error(undef, "Reading git-diff-tree failed");
4207                         @difftree
4208                                 or die_error('404 Not Found', "Blob diff not found");
4209
4210                 } elsif (defined $hash &&
4211                          $hash =~ /[0-9a-fA-F]{40}/) {
4212                         # try to find filename from $hash
4213
4214                         # read filtered raw output
4215                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4216                                 $hash_parent_base, $hash_base, "--"
4217                                 or die_error(undef, "Open git-diff-tree failed");
4218                         @difftree =
4219                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4220                                 # $hash == to_id
4221                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4222                                 map { chomp; $_ } <$fd>;
4223                         close $fd
4224                                 or die_error(undef, "Reading git-diff-tree failed");
4225                         @difftree
4226                                 or die_error('404 Not Found', "Blob diff not found");
4227
4228                 } else {
4229                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4230                 }
4231
4232                 if (@difftree > 1) {
4233                         die_error('404 Not Found', "Ambiguous blob diff specification");
4234                 }
4235
4236                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4237                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4238                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4239
4240                 $hash_parent ||= $diffinfo{'from_id'};
4241                 $hash        ||= $diffinfo{'to_id'};
4242
4243                 # non-textual hash id's can be cached
4244                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4245                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4246                         $expires = '+1d';
4247                 }
4248
4249                 # open patch output
4250                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4251                         '-p', ($format eq 'html' ? "--full-index" : ()),
4252                         $hash_parent_base, $hash_base,
4253                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4254                         or die_error(undef, "Open git-diff-tree failed");
4255         }
4256
4257         # old/legacy style URI
4258         if (!%diffinfo && # if new style URI failed
4259             defined $hash && defined $hash_parent) {
4260                 # fake git-diff-tree raw output
4261                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4262                 $diffinfo{'from_id'} = $hash_parent;
4263                 $diffinfo{'to_id'}   = $hash;
4264                 if (defined $file_name) {
4265                         if (defined $file_parent) {
4266                                 $diffinfo{'status'} = '2';
4267                                 $diffinfo{'from_file'} = $file_parent;
4268                                 $diffinfo{'to_file'}   = $file_name;
4269                         } else { # assume not renamed
4270                                 $diffinfo{'status'} = '1';
4271                                 $diffinfo{'from_file'} = $file_name;
4272                                 $diffinfo{'to_file'}   = $file_name;
4273                         }
4274                 } else { # no filename given
4275                         $diffinfo{'status'} = '2';
4276                         $diffinfo{'from_file'} = $hash_parent;
4277                         $diffinfo{'to_file'}   = $hash;
4278                 }
4279
4280                 # non-textual hash id's can be cached
4281                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4282                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4283                         $expires = '+1d';
4284                 }
4285
4286                 # open patch output
4287                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4288                         '-p', ($format eq 'html' ? "--full-index" : ()),
4289                         $hash_parent, $hash, "--"
4290                         or die_error(undef, "Open git-diff failed");
4291         } else  {
4292                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4293                         unless %diffinfo;
4294         }
4295
4296         # header
4297         if ($format eq 'html') {
4298                 my $formats_nav =
4299                         $cgi->a({-href => href(action=>"blobdiff_plain",
4300                                                hash=>$hash, hash_parent=>$hash_parent,
4301                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4302                                                file_name=>$file_name, file_parent=>$file_parent)},
4303                                 "raw");
4304                 git_header_html(undef, $expires);
4305                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4306                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4307                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4308                 } else {
4309                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4310                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4311                 }
4312                 if (defined $file_name) {
4313                         git_print_page_path($file_name, "blob", $hash_base);
4314                 } else {
4315                         print "<div class=\"page_path\"></div>\n";
4316                 }
4317
4318         } elsif ($format eq 'plain') {
4319                 print $cgi->header(
4320                         -type => 'text/plain',
4321                         -charset => 'utf-8',
4322                         -expires => $expires,
4323                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4324
4325                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4326
4327         } else {
4328                 die_error(undef, "Unknown blobdiff format");
4329         }
4330
4331         # patch
4332         if ($format eq 'html') {
4333                 print "<div class=\"page_body\">\n";
4334
4335                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4336                 close $fd;
4337
4338                 print "</div>\n"; # class="page_body"
4339                 git_footer_html();
4340
4341         } else {
4342                 while (my $line = <$fd>) {
4343                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4344                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4345
4346                         print $line;
4347
4348                         last if $line =~ m!^\+\+\+!;
4349                 }
4350                 local $/ = undef;
4351                 print <$fd>;
4352                 close $fd;
4353         }
4354 }
4355
4356 sub git_blobdiff_plain {
4357         git_blobdiff('plain');
4358 }
4359
4360 sub git_commitdiff {
4361         my $format = shift || 'html';
4362         $hash ||= $hash_base || "HEAD";
4363         my %co = parse_commit($hash);
4364         if (!%co) {
4365                 die_error(undef, "Unknown commit object");
4366         }
4367
4368         # we need to prepare $formats_nav before any parameter munging
4369         my $formats_nav;
4370         if ($format eq 'html') {
4371                 $formats_nav =
4372                         $cgi->a({-href => href(action=>"commitdiff_plain",
4373                                                hash=>$hash, hash_parent=>$hash_parent)},
4374                                 "raw");
4375
4376                 if (defined $hash_parent) {
4377                         # commitdiff with two commits given
4378                         my $hash_parent_short = $hash_parent;
4379                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4380                                 $hash_parent_short = substr($hash_parent, 0, 7);
4381                         }
4382                         $formats_nav .=
4383                                 ' (from: ' .
4384                                 $cgi->a({-href => href(action=>"commitdiff",
4385                                                        hash=>$hash_parent)},
4386                                         esc_html($hash_parent_short)) .
4387                                 ')';
4388                 } elsif (!$co{'parent'}) {
4389                         # --root commitdiff
4390                         $formats_nav .= ' (initial)';
4391                 } elsif (scalar @{$co{'parents'}} == 1) {
4392                         # single parent commit
4393                         $formats_nav .=
4394                                 ' (parent: ' .
4395                                 $cgi->a({-href => href(action=>"commitdiff",
4396                                                        hash=>$co{'parent'})},
4397                                         esc_html(substr($co{'parent'}, 0, 7))) .
4398                                 ')';
4399                 } else {
4400                         # merge commit
4401                         $formats_nav .=
4402                                 ' (merge: ' .
4403                                 join(' ', map {
4404                                         $cgi->a({-href => href(action=>"commitdiff",
4405                                                                hash=>$_)},
4406                                                 esc_html(substr($_, 0, 7)));
4407                                 } @{$co{'parents'}} ) .
4408                                 ')';
4409                 }
4410         }
4411
4412         my $hash_parent_param = $hash_parent;
4413         if (!defined $hash_parent) {
4414                 $hash_parent_param =
4415                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4416         }
4417
4418         # read commitdiff
4419         my $fd;
4420         my @difftree;
4421         if ($format eq 'html') {
4422                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4423                         "--no-commit-id", "--patch-with-raw", "--full-index",
4424                         $hash_parent_param, $hash, "--"
4425                         or die_error(undef, "Open git-diff-tree failed");
4426
4427                 while (my $line = <$fd>) {
4428                         chomp $line;
4429                         # empty line ends raw part of diff-tree output
4430                         last unless $line;
4431                         push @difftree, scalar parse_difftree_raw_line($line);
4432                 }
4433
4434         } elsif ($format eq 'plain') {
4435                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4436                         '-p', $hash_parent_param, $hash, "--"
4437                         or die_error(undef, "Open git-diff-tree failed");
4438
4439         } else {
4440                 die_error(undef, "Unknown commitdiff format");
4441         }
4442
4443         # non-textual hash id's can be cached
4444         my $expires;
4445         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4446                 $expires = "+1d";
4447         }
4448
4449         # write commit message
4450         if ($format eq 'html') {
4451                 my $refs = git_get_references();
4452                 my $ref = format_ref_marker($refs, $co{'id'});
4453
4454                 git_header_html(undef, $expires);
4455                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4456                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4457                 git_print_authorship(\%co);
4458                 print "<div class=\"page_body\">\n";
4459                 if (@{$co{'comment'}} > 1) {
4460                         print "<div class=\"log\">\n";
4461                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4462                         print "</div>\n"; # class="log"
4463                 }
4464
4465         } elsif ($format eq 'plain') {
4466                 my $refs = git_get_references("tags");
4467                 my $tagname = git_get_rev_name_tags($hash);
4468                 my $filename = basename($project) . "-$hash.patch";
4469
4470                 print $cgi->header(
4471                         -type => 'text/plain',
4472                         -charset => 'utf-8',
4473                         -expires => $expires,
4474                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4475                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4476                 print <<TEXT;
4477 From: $co{'author'}
4478 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4479 Subject: $co{'title'}
4480 TEXT
4481                 print "X-Git-Tag: $tagname\n" if $tagname;
4482                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4483
4484                 foreach my $line (@{$co{'comment'}}) {
4485                         print "$line\n";
4486                 }
4487                 print "---\n\n";
4488         }
4489
4490         # write patch
4491         if ($format eq 'html') {
4492                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4493                 print "<br/>\n";
4494
4495                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4496                 close $fd;
4497                 print "</div>\n"; # class="page_body"
4498                 git_footer_html();
4499
4500         } elsif ($format eq 'plain') {
4501                 local $/ = undef;
4502                 print <$fd>;
4503                 close $fd
4504                         or print "Reading git-diff-tree failed\n";
4505         }
4506 }
4507
4508 sub git_commitdiff_plain {
4509         git_commitdiff('plain');
4510 }
4511
4512 sub git_history {
4513         if (!defined $hash_base) {
4514                 $hash_base = git_get_head_hash($project);
4515         }
4516         if (!defined $page) {
4517                 $page = 0;
4518         }
4519         my $ftype;
4520         my %co = parse_commit($hash_base);
4521         if (!%co) {
4522                 die_error(undef, "Unknown commit object");
4523         }
4524
4525         my $refs = git_get_references();
4526         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4527
4528         if (!defined $hash && defined $file_name) {
4529                 $hash = git_get_hash_by_path($hash_base, $file_name);
4530         }
4531         if (defined $hash) {
4532                 $ftype = git_get_type($hash);
4533         }
4534
4535         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4536
4537         my $paging_nav = '';
4538         if ($page > 0) {
4539                 $paging_nav .=
4540                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4541                                                file_name=>$file_name)},
4542                                 "first");
4543                 $paging_nav .= " &sdot; " .
4544                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4545                                                file_name=>$file_name, page=>$page-1),
4546                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4547         } else {
4548                 $paging_nav .= "first";
4549                 $paging_nav .= " &sdot; prev";
4550         }
4551         if ($#commitlist >= 100) {
4552                 $paging_nav .= " &sdot; " .
4553                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4554                                                file_name=>$file_name, page=>$page+1),
4555                                  -accesskey => "n", -title => "Alt-n"}, "next");
4556         } else {
4557                 $paging_nav .= " &sdot; next";
4558         }
4559         my $next_link = '';
4560         if ($#commitlist >= 100) {
4561                 $next_link =
4562                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4563                                                file_name=>$file_name, page=>$page+1),
4564                                  -accesskey => "n", -title => "Alt-n"}, "next");
4565         }
4566
4567         git_header_html();
4568         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4569         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4570         git_print_page_path($file_name, $ftype, $hash_base);
4571
4572         git_history_body(\@commitlist, 0, 99,
4573                          $refs, $hash_base, $ftype, $next_link);
4574
4575         git_footer_html();
4576 }
4577
4578 sub git_search {
4579         my ($have_search) = gitweb_check_feature('search');
4580         if (!$have_search) {
4581                 die_error('403 Permission denied', "Permission denied");
4582         }
4583         if (!defined $searchtext) {
4584                 die_error(undef, "Text field empty");
4585         }
4586         if (!defined $hash) {
4587                 $hash = git_get_head_hash($project);
4588         }
4589         my %co = parse_commit($hash);
4590         if (!%co) {
4591                 die_error(undef, "Unknown commit object");
4592         }
4593         if (!defined $page) {
4594                 $page = 0;
4595         }
4596
4597         $searchtype ||= 'commit';
4598         if ($searchtype eq 'pickaxe') {
4599                 # pickaxe may take all resources of your box and run for several minutes
4600                 # with every query - so decide by yourself how public you make this feature
4601                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4602                 if (!$have_pickaxe) {
4603                         die_error('403 Permission denied', "Permission denied");
4604                 }
4605         }
4606
4607         git_header_html();
4608
4609         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4610                 my $greptype;
4611                 if ($searchtype eq 'commit') {
4612                         $greptype = "--grep=";
4613                 } elsif ($searchtype eq 'author') {
4614                         $greptype = "--author=";
4615                 } elsif ($searchtype eq 'committer') {
4616                         $greptype = "--committer=";
4617                 }
4618                 $greptype .= $searchtext;
4619                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4620
4621                 my $paging_nav = '';
4622                 if ($page > 0) {
4623                         $paging_nav .=
4624                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4625                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4626                                         "first");
4627                         $paging_nav .= " &sdot; " .
4628                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4629                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4630                                                        page=>$page-1),
4631                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4632                 } else {
4633                         $paging_nav .= "first";
4634                         $paging_nav .= " &sdot; prev";
4635                 }
4636                 if ($#commitlist >= 100) {
4637                         $paging_nav .= " &sdot; " .
4638                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4639                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4640                                                        page=>$page+1),
4641                                          -accesskey => "n", -title => "Alt-n"}, "next");
4642                 } else {
4643                         $paging_nav .= " &sdot; next";
4644                 }
4645                 my $next_link = '';
4646                 if ($#commitlist >= 100) {
4647                         $next_link =
4648                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4649                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4650                                                        page=>$page+1),
4651                                          -accesskey => "n", -title => "Alt-n"}, "next");
4652                 }
4653
4654                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4655                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4656                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4657         }
4658
4659         if ($searchtype eq 'pickaxe') {
4660                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4661                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4662
4663                 print "<table cellspacing=\"0\">\n";
4664                 my $alternate = 1;
4665                 $/ = "\n";
4666                 my $git_command = git_cmd_str();
4667                 open my $fd, "-|", "$git_command rev-list $hash | " .
4668                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4669                 undef %co;
4670                 my @files;
4671                 while (my $line = <$fd>) {
4672                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4673                                 my %set;
4674                                 $set{'file'} = $6;
4675                                 $set{'from_id'} = $3;
4676                                 $set{'to_id'} = $4;
4677                                 $set{'id'} = $set{'to_id'};
4678                                 if ($set{'id'} =~ m/0{40}/) {
4679                                         $set{'id'} = $set{'from_id'};
4680                                 }
4681                                 if ($set{'id'} =~ m/0{40}/) {
4682                                         next;
4683                                 }
4684                                 push @files, \%set;
4685                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4686                                 if (%co) {
4687                                         if ($alternate) {
4688                                                 print "<tr class=\"dark\">\n";
4689                                         } else {
4690                                                 print "<tr class=\"light\">\n";
4691                                         }
4692                                         $alternate ^= 1;
4693                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4694                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4695                                               "<td>" .
4696                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4697                                                       -class => "list subject"},
4698                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4699                                         while (my $setref = shift @files) {
4700                                                 my %set = %$setref;
4701                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4702                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4703                                                               -class => "list"},
4704                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4705                                                       "<br/>\n";
4706                                         }
4707                                         print "</td>\n" .
4708                                               "<td class=\"link\">" .
4709                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4710                                               " | " .
4711                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4712                                         print "</td>\n" .
4713                                               "</tr>\n";
4714                                 }
4715                                 %co = parse_commit($1);
4716                         }
4717                 }
4718                 close $fd;
4719
4720                 print "</table>\n";
4721         }
4722         git_footer_html();
4723 }
4724
4725 sub git_search_help {
4726         git_header_html();
4727         git_print_page_nav('','', $hash,$hash,$hash);
4728         print <<EOT;
4729 <dl>
4730 <dt><b>commit</b></dt>
4731 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4732 <dt><b>author</b></dt>
4733 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4734 <dt><b>committer</b></dt>
4735 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4736 EOT
4737         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4738         if ($have_pickaxe) {
4739                 print <<EOT;
4740 <dt><b>pickaxe</b></dt>
4741 <dd>All commits that caused the string to appear or disappear from any file (changes that
4742 added, removed or "modified" the string) will be listed. This search can take a while and
4743 takes a lot of strain on the server, so please use it wisely.</dd>
4744 EOT
4745         }
4746         print "</dl>\n";
4747         git_footer_html();
4748 }
4749
4750 sub git_shortlog {
4751         my $head = git_get_head_hash($project);
4752         if (!defined $hash) {
4753                 $hash = $head;
4754         }
4755         if (!defined $page) {
4756                 $page = 0;
4757         }
4758         my $refs = git_get_references();
4759
4760         my @commitlist = parse_commits($hash, 101, (100 * $page));
4761
4762         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4763         my $next_link = '';
4764         if ($#commitlist >= 100) {
4765                 $next_link =
4766                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4767                                  -accesskey => "n", -title => "Alt-n"}, "next");
4768         }
4769
4770         git_header_html();
4771         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4772         git_print_header_div('summary', $project);
4773
4774         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4775
4776         git_footer_html();
4777 }
4778
4779 ## ......................................................................
4780 ## feeds (RSS, Atom; OPML)
4781
4782 sub git_feed {
4783         my $format = shift || 'atom';
4784         my ($have_blame) = gitweb_check_feature('blame');
4785
4786         # Atom: http://www.atomenabled.org/developers/syndication/
4787         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4788         if ($format ne 'rss' && $format ne 'atom') {
4789                 die_error(undef, "Unknown web feed format");
4790         }
4791
4792         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4793         my $head = $hash || 'HEAD';
4794         my @commitlist = parse_commits($head, 150);
4795
4796         my %latest_commit;
4797         my %latest_date;
4798         my $content_type = "application/$format+xml";
4799         if (defined $cgi->http('HTTP_ACCEPT') &&
4800                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4801                 # browser (feed reader) prefers text/xml
4802                 $content_type = 'text/xml';
4803         }
4804         if (defined($commitlist[0])) {
4805                 %latest_commit = %{$commitlist[0]};
4806                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4807                 print $cgi->header(
4808                         -type => $content_type,
4809                         -charset => 'utf-8',
4810                         -last_modified => $latest_date{'rfc2822'});
4811         } else {
4812                 print $cgi->header(
4813                         -type => $content_type,
4814                         -charset => 'utf-8');
4815         }
4816
4817         # Optimization: skip generating the body if client asks only
4818         # for Last-Modified date.
4819         return if ($cgi->request_method() eq 'HEAD');
4820
4821         # header variables
4822         my $title = "$site_name - $project/$action";
4823         my $feed_type = 'log';
4824         if (defined $hash) {
4825                 $title .= " - '$hash'";
4826                 $feed_type = 'branch log';
4827                 if (defined $file_name) {
4828                         $title .= " :: $file_name";
4829                         $feed_type = 'history';
4830                 }
4831         } elsif (defined $file_name) {
4832                 $title .= " - $file_name";
4833                 $feed_type = 'history';
4834         }
4835         $title .= " $feed_type";
4836         my $descr = git_get_project_description($project);
4837         if (defined $descr) {
4838                 $descr = esc_html($descr);
4839         } else {
4840                 $descr = "$project " .
4841                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4842                          " feed";
4843         }
4844         my $owner = git_get_project_owner($project);
4845         $owner = esc_html($owner);
4846
4847         #header
4848         my $alt_url;
4849         if (defined $file_name) {
4850                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4851         } elsif (defined $hash) {
4852                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4853         } else {
4854                 $alt_url = href(-full=>1, action=>"summary");
4855         }
4856         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4857         if ($format eq 'rss') {
4858                 print <<XML;
4859 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4860 <channel>
4861 XML
4862                 print "<title>$title</title>\n" .
4863                       "<link>$alt_url</link>\n" .
4864                       "<description>$descr</description>\n" .
4865                       "<language>en</language>\n";
4866         } elsif ($format eq 'atom') {
4867                 print <<XML;
4868 <feed xmlns="http://www.w3.org/2005/Atom">
4869 XML
4870                 print "<title>$title</title>\n" .
4871                       "<subtitle>$descr</subtitle>\n" .
4872                       '<link rel="alternate" type="text/html" href="' .
4873                       $alt_url . '" />' . "\n" .
4874                       '<link rel="self" type="' . $content_type . '" href="' .
4875                       $cgi->self_url() . '" />' . "\n" .
4876                       "<id>" . href(-full=>1) . "</id>\n" .
4877                       # use project owner for feed author
4878                       "<author><name>$owner</name></author>\n";
4879                 if (defined $favicon) {
4880                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4881                 }
4882                 if (defined $logo_url) {
4883                         # not twice as wide as tall: 72 x 27 pixels
4884                         print "<logo>" . esc_url($logo) . "</logo>\n";
4885                 }
4886                 if (! %latest_date) {
4887                         # dummy date to keep the feed valid until commits trickle in:
4888                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4889                 } else {
4890                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4891                 }
4892         }
4893
4894         # contents
4895         for (my $i = 0; $i <= $#commitlist; $i++) {
4896                 my %co = %{$commitlist[$i]};
4897                 my $commit = $co{'id'};
4898                 # we read 150, we always show 30 and the ones more recent than 48 hours
4899                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4900                         last;
4901                 }
4902                 my %cd = parse_date($co{'author_epoch'});
4903
4904                 # get list of changed files
4905                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4906                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4907                         or next;
4908                 my @difftree = map { chomp; $_ } <$fd>;
4909                 close $fd
4910                         or next;
4911
4912                 # print element (entry, item)
4913                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4914                 if ($format eq 'rss') {
4915                         print "<item>\n" .
4916                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4917                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4918                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4919                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4920                               "<link>$co_url</link>\n" .
4921                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4922                               "<content:encoded>" .
4923                               "<![CDATA[\n";
4924                 } elsif ($format eq 'atom') {
4925                         print "<entry>\n" .
4926                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4927                               "<updated>$cd{'iso-8601'}</updated>\n" .
4928                               "<author>\n" .
4929                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4930                         if ($co{'author_email'}) {
4931                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4932                         }
4933                         print "</author>\n" .
4934                               # use committer for contributor
4935                               "<contributor>\n" .
4936                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4937                         if ($co{'committer_email'}) {
4938                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4939                         }
4940                         print "</contributor>\n" .
4941                               "<published>$cd{'iso-8601'}</published>\n" .
4942                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4943                               "<id>$co_url</id>\n" .
4944                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4945                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4946                 }
4947                 my $comment = $co{'comment'};
4948                 print "<pre>\n";
4949                 foreach my $line (@$comment) {
4950                         $line = esc_html($line);
4951                         print "$line\n";
4952                 }
4953                 print "</pre><ul>\n";
4954                 foreach my $difftree_line (@difftree) {
4955                         my %difftree = parse_difftree_raw_line($difftree_line);
4956                         next if !$difftree{'from_id'};
4957
4958                         my $file = $difftree{'file'} || $difftree{'to_file'};
4959
4960                         print "<li>" .
4961                               "[" .
4962                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4963                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4964                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4965                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4966                                       -title => "diff"}, 'D');
4967                         if ($have_blame) {
4968                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4969                                                              file_name=>$file, hash_base=>$commit),
4970                                               -title => "blame"}, 'B');
4971                         }
4972                         # if this is not a feed of a file history
4973                         if (!defined $file_name || $file_name ne $file) {
4974                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4975                                                              file_name=>$file, hash=>$commit),
4976                                               -title => "history"}, 'H');
4977                         }
4978                         $file = esc_path($file);
4979                         print "] ".
4980                               "$file</li>\n";
4981                 }
4982                 if ($format eq 'rss') {
4983                         print "</ul>]]>\n" .
4984                               "</content:encoded>\n" .
4985                               "</item>\n";
4986                 } elsif ($format eq 'atom') {
4987                         print "</ul>\n</div>\n" .
4988                               "</content>\n" .
4989                               "</entry>\n";
4990                 }
4991         }
4992
4993         # end of feed
4994         if ($format eq 'rss') {
4995                 print "</channel>\n</rss>\n";
4996         }       elsif ($format eq 'atom') {
4997                 print "</feed>\n";
4998         }
4999 }
5000
5001 sub git_rss {
5002         git_feed('rss');
5003 }
5004
5005 sub git_atom {
5006         git_feed('atom');
5007 }
5008
5009 sub git_opml {
5010         my @list = git_get_projects_list();
5011
5012         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5013         print <<XML;
5014 <?xml version="1.0" encoding="utf-8"?>
5015 <opml version="1.0">
5016 <head>
5017   <title>$site_name OPML Export</title>
5018 </head>
5019 <body>
5020 <outline text="git RSS feeds">
5021 XML
5022
5023         foreach my $pr (@list) {
5024                 my %proj = %$pr;
5025                 my $head = git_get_head_hash($proj{'path'});
5026                 if (!defined $head) {
5027                         next;
5028                 }
5029                 $git_dir = "$projectroot/$proj{'path'}";
5030                 my %co = parse_commit($head);
5031                 if (!%co) {
5032                         next;
5033                 }
5034
5035                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5036                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5037                 my $html = "$my_url?p=$proj{'path'};a=summary";
5038                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5039         }
5040         print <<XML;
5041 </outline>
5042 </body>
5043 </opml>
5044 XML
5045 }