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