gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 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 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # You define site-wide feature defaults here; override them with
  98 # $GITWEB_CONFIG as necessary.
  99 our %feature = (
 100         # feature => {
 101         #       'sub' => feature-sub (subroutine),
 102         #       'override' => allow-override (boolean),
 103         #       'default' => [ default options...] (array reference)}
 104         #
 105         # if feature is overridable (it means that allow-override has true value),
 106         # then feature-sub will be called with default options as parameters;
 107         # return value of feature-sub indicates if to enable specified feature
 108         #
 109         # if there is no 'sub' key (no feature-sub), then feature cannot be
 110         # overriden
 111         #
 112         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 113
 114         # Enable the 'blame' blob view, showing the last commit that modified
 115         # each line in the file. This can be very CPU-intensive.
 116
 117         # To enable system wide have in $GITWEB_CONFIG
 118         # $feature{'blame'}{'default'} = [1];
 119         # To have project specific config enable override in $GITWEB_CONFIG
 120         # $feature{'blame'}{'override'} = 1;
 121         # and in project config gitweb.blame = 0|1;
 122         'blame' => {
 123                 'sub' => \&feature_blame,
 124                 'override' => 0,
 125                 'default' => [0]},
 126
 127         # Enable the 'snapshot' link, providing a compressed tarball of any
 128         # tree. This can potentially generate high traffic if you have large
 129         # project.
 130
 131         # To disable system wide have in $GITWEB_CONFIG
 132         # $feature{'snapshot'}{'default'} = [undef];
 133         # To have project specific config enable override in $GITWEB_CONFIG
 134         # $feature{'snapshot'}{'override'} = 1;
 135         # and in project config gitweb.snapshot = none|gzip|bzip2;
 136         'snapshot' => {
 137                 'sub' => \&feature_snapshot,
 138                 'override' => 0,
 139                 #         => [content-encoding, suffix, program]
 140                 'default' => ['x-gzip', 'gz', 'gzip']},
 141
 142         # Enable text search, which will list the commits which match author,
 143         # committer or commit text to a given string.  Enabled by default.
 144         # Project specific override is not supported.
 145         'search' => {
 146                 'override' => 0,
 147                 'default' => [1]},
 148
 149         # Enable the pickaxe search, which will list the commits that modified
 150         # a given string in a file. This can be practical and quite faster
 151         # alternative to 'blame', but still potentially CPU-intensive.
 152
 153         # To enable system wide have in $GITWEB_CONFIG
 154         # $feature{'pickaxe'}{'default'} = [1];
 155         # To have project specific config enable override in $GITWEB_CONFIG
 156         # $feature{'pickaxe'}{'override'} = 1;
 157         # and in project config gitweb.pickaxe = 0|1;
 158         'pickaxe' => {
 159                 'sub' => \&feature_pickaxe,
 160                 'override' => 0,
 161                 'default' => [1]},
 162
 163         # Make gitweb use an alternative format of the URLs which can be
 164         # more readable and natural-looking: project name is embedded
 165         # directly in the path and the query string contains other
 166         # auxiliary information. All gitweb installations recognize
 167         # URL in either format; this configures in which formats gitweb
 168         # generates links.
 169
 170         # To enable system wide have in $GITWEB_CONFIG
 171         # $feature{'pathinfo'}{'default'} = [1];
 172         # Project specific override is not supported.
 173
 174         # Note that you will need to change the default location of CSS,
 175         # favicon, logo and possibly other files to an absolute URL. Also,
 176         # if gitweb.cgi serves as your indexfile, you will need to force
 177         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 178         'pathinfo' => {
 179                 'override' => 0,
 180                 'default' => [0]},
 181
 182         # Make gitweb consider projects in project root subdirectories
 183         # to be forks of existing projects. Given project $projname.git,
 184         # projects matching $projname/*.git will not be shown in the main
 185         # projects list, instead a '+' mark will be added to $projname
 186         # there and a 'forks' view will be enabled for the project, listing
 187         # all the forks. If project list is taken from a file, forks have
 188         # to be listed after the main project.
 189
 190         # To enable system wide have in $GITWEB_CONFIG
 191         # $feature{'forks'}{'default'} = [1];
 192         # Project specific override is not supported.
 193         'forks' => {
 194                 'override' => 0,
 195                 'default' => [0]},
 196 );
 197
 198 sub gitweb_check_feature {
 199         my ($name) = @_;
 200         return unless exists $feature{$name};
 201         my ($sub, $override, @defaults) = (
 202                 $feature{$name}{'sub'},
 203                 $feature{$name}{'override'},
 204                 @{$feature{$name}{'default'}});
 205         if (!$override) { return @defaults; }
 206         if (!defined $sub) {
 207                 warn "feature $name is not overrideable";
 208                 return @defaults;
 209         }
 210         return $sub->(@defaults);
 211 }
 212
 213 sub feature_blame {
 214         my ($val) = git_get_project_config('blame', '--bool');
 215
 216         if ($val eq 'true') {
 217                 return 1;
 218         } elsif ($val eq 'false') {
 219                 return 0;
 220         }
 221
 222         return $_[0];
 223 }
 224
 225 sub feature_snapshot {
 226         my ($ctype, $suffix, $command) = @_;
 227
 228         my ($val) = git_get_project_config('snapshot');
 229
 230         if ($val eq 'gzip') {
 231                 return ('x-gzip', 'gz', 'gzip');
 232         } elsif ($val eq 'bzip2') {
 233                 return ('x-bzip2', 'bz2', 'bzip2');
 234         } elsif ($val eq 'none') {
 235                 return ();
 236         }
 237
 238         return ($ctype, $suffix, $command);
 239 }
 240
 241 sub gitweb_have_snapshot {
 242         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 243         my $have_snapshot = (defined $ctype && defined $suffix);
 244
 245         return $have_snapshot;
 246 }
 247
 248 sub feature_pickaxe {
 249         my ($val) = git_get_project_config('pickaxe', '--bool');
 250
 251         if ($val eq 'true') {
 252                 return (1);
 253         } elsif ($val eq 'false') {
 254                 return (0);
 255         }
 256
 257         return ($_[0]);
 258 }
 259
 260 # checking HEAD file with -e is fragile if the repository was
 261 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 262 # and then pruned.
 263 sub check_head_link {
 264         my ($dir) = @_;
 265         my $headfile = "$dir/HEAD";
 266         return ((-e $headfile) ||
 267                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 268 }
 269
 270 sub check_export_ok {
 271         my ($dir) = @_;
 272         return (check_head_link($dir) &&
 273                 (!$export_ok || -e "$dir/$export_ok"));
 274 }
 275
 276 # rename detection options for git-diff and git-diff-tree
 277 # - default is '-M', with the cost proportional to
 278 #   (number of removed files) * (number of new files).
 279 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 280 #   (number of changed files + number of removed files) * (number of new files)
 281 # - even more costly is '-C', '--find-copies-harder' with cost
 282 #   (number of files in the original tree) * (number of new files)
 283 # - one might want to include '-B' option, e.g. '-B', '-M'
 284 our @diff_opts = ('-M'); # taken from git_commit
 285
 286 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 287 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 288
 289 # version of the core git binary
 290 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 291
 292 $projects_list ||= $projectroot;
 293
 294 # ======================================================================
 295 # input validation and dispatch
 296 our $action = $cgi->param('a');
 297 if (defined $action) {
 298         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 299                 die_error(undef, "Invalid action parameter");
 300         }
 301 }
 302
 303 # parameters which are pathnames
 304 our $project = $cgi->param('p');
 305 if (defined $project) {
 306         if (!validate_pathname($project) ||
 307             !(-d "$projectroot/$project") ||
 308             !check_head_link("$projectroot/$project") ||
 309             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 310             ($strict_export && !project_in_list($project))) {
 311                 undef $project;
 312                 die_error(undef, "No such project");
 313         }
 314 }
 315
 316 our $file_name = $cgi->param('f');
 317 if (defined $file_name) {
 318         if (!validate_pathname($file_name)) {
 319                 die_error(undef, "Invalid file parameter");
 320         }
 321 }
 322
 323 our $file_parent = $cgi->param('fp');
 324 if (defined $file_parent) {
 325         if (!validate_pathname($file_parent)) {
 326                 die_error(undef, "Invalid file parent parameter");
 327         }
 328 }
 329
 330 # parameters which are refnames
 331 our $hash = $cgi->param('h');
 332 if (defined $hash) {
 333         if (!validate_refname($hash)) {
 334                 die_error(undef, "Invalid hash parameter");
 335         }
 336 }
 337
 338 our $hash_parent = $cgi->param('hp');
 339 if (defined $hash_parent) {
 340         if (!validate_refname($hash_parent)) {
 341                 die_error(undef, "Invalid hash parent parameter");
 342         }
 343 }
 344
 345 our $hash_base = $cgi->param('hb');
 346 if (defined $hash_base) {
 347         if (!validate_refname($hash_base)) {
 348                 die_error(undef, "Invalid hash base parameter");
 349         }
 350 }
 351
 352 our $hash_parent_base = $cgi->param('hpb');
 353 if (defined $hash_parent_base) {
 354         if (!validate_refname($hash_parent_base)) {
 355                 die_error(undef, "Invalid hash parent base parameter");
 356         }
 357 }
 358
 359 # other parameters
 360 our $page = $cgi->param('pg');
 361 if (defined $page) {
 362         if ($page =~ m/[^0-9]/) {
 363                 die_error(undef, "Invalid page parameter");
 364         }
 365 }
 366
 367 our $searchtext = $cgi->param('s');
 368 our $search_regexp;
 369 if (defined $searchtext) {
 370         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 371                 die_error(undef, "Invalid search parameter");
 372         }
 373         if (length($searchtext) < 2) {
 374                 die_error(undef, "At least two characters are required for search parameter");
 375         }
 376         $search_regexp = quotemeta $searchtext;
 377 }
 378
 379 our $searchtype = $cgi->param('st');
 380 if (defined $searchtype) {
 381         if ($searchtype =~ m/[^a-z]/) {
 382                 die_error(undef, "Invalid searchtype parameter");
 383         }
 384 }
 385
 386 # now read PATH_INFO and use it as alternative to parameters
 387 sub evaluate_path_info {
 388         return if defined $project;
 389         my $path_info = $ENV{"PATH_INFO"};
 390         return if !$path_info;
 391         $path_info =~ s,^/+,,;
 392         return if !$path_info;
 393         # find which part of PATH_INFO is project
 394         $project = $path_info;
 395         $project =~ s,/+$,,;
 396         while ($project && !check_head_link("$projectroot/$project")) {
 397                 $project =~ s,/*[^/]*$,,;
 398         }
 399         # validate project
 400         $project = validate_pathname($project);
 401         if (!$project ||
 402             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 403             ($strict_export && !project_in_list($project))) {
 404                 undef $project;
 405                 return;
 406         }
 407         # do not change any parameters if an action is given using the query string
 408         return if $action;
 409         $path_info =~ s,^$project/*,,;
 410         my ($refname, $pathname) = split(/:/, $path_info, 2);
 411         if (defined $pathname) {
 412                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 413                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 414                 $pathname =~ s,^/+,,;
 415                 if (!$pathname || substr($pathname, -1) eq "/") {
 416                         $action  ||= "tree";
 417                         $pathname =~ s,/$,,;
 418                 } else {
 419                         $action  ||= "blob_plain";
 420                 }
 421                 $hash_base ||= validate_refname($refname);
 422                 $file_name ||= validate_pathname($pathname);
 423         } elsif (defined $refname) {
 424                 # we got "project.git/branch"
 425                 $action ||= "shortlog";
 426                 $hash   ||= validate_refname($refname);
 427         }
 428 }
 429 evaluate_path_info();
 430
 431 # path to the current git repository
 432 our $git_dir;
 433 $git_dir = "$projectroot/$project" if $project;
 434
 435 # dispatch
 436 my %actions = (
 437         "blame" => \&git_blame2,
 438         "blobdiff" => \&git_blobdiff,
 439         "blobdiff_plain" => \&git_blobdiff_plain,
 440         "blob" => \&git_blob,
 441         "blob_plain" => \&git_blob_plain,
 442         "commitdiff" => \&git_commitdiff,
 443         "commitdiff_plain" => \&git_commitdiff_plain,
 444         "commit" => \&git_commit,
 445         "forks" => \&git_forks,
 446         "heads" => \&git_heads,
 447         "history" => \&git_history,
 448         "log" => \&git_log,
 449         "rss" => \&git_rss,
 450         "atom" => \&git_atom,
 451         "search" => \&git_search,
 452         "search_help" => \&git_search_help,
 453         "shortlog" => \&git_shortlog,
 454         "summary" => \&git_summary,
 455         "tag" => \&git_tag,
 456         "tags" => \&git_tags,
 457         "tree" => \&git_tree,
 458         "snapshot" => \&git_snapshot,
 459         "object" => \&git_object,
 460         # those below don't need $project
 461         "opml" => \&git_opml,
 462         "project_list" => \&git_project_list,
 463         "project_index" => \&git_project_index,
 464 );
 465
 466 if (!defined $action) {
 467         if (defined $hash) {
 468                 $action = git_get_type($hash);
 469         } elsif (defined $hash_base && defined $file_name) {
 470                 $action = git_get_type("$hash_base:$file_name");
 471         } elsif (defined $project) {
 472                 $action = 'summary';
 473         } else {
 474                 $action = 'project_list';
 475         }
 476 }
 477 if (!defined($actions{$action})) {
 478         die_error(undef, "Unknown action");
 479 }
 480 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 481     !$project) {
 482         die_error(undef, "Project needed");
 483 }
 484 $actions{$action}->();
 485 exit;
 486
 487 ## ======================================================================
 488 ## action links
 489
 490 sub href(%) {
 491         my %params = @_;
 492         # default is to use -absolute url() i.e. $my_uri
 493         my $href = $params{-full} ? $my_url : $my_uri;
 494
 495         # XXX: Warning: If you touch this, check the search form for updating,
 496         # too.
 497
 498         my @mapping = (
 499                 project => "p",
 500                 action => "a",
 501                 file_name => "f",
 502                 file_parent => "fp",
 503                 hash => "h",
 504                 hash_parent => "hp",
 505                 hash_base => "hb",
 506                 hash_parent_base => "hpb",
 507                 page => "pg",
 508                 order => "o",
 509                 searchtext => "s",
 510                 searchtype => "st",
 511         );
 512         my %mapping = @mapping;
 513
 514         $params{'project'} = $project unless exists $params{'project'};
 515
 516         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 517         if ($use_pathinfo) {
 518                 # use PATH_INFO for project name
 519                 $href .= "/$params{'project'}" if defined $params{'project'};
 520                 delete $params{'project'};
 521
 522                 # Summary just uses the project path URL
 523                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 524                         delete $params{'action'};
 525                 }
 526         }
 527
 528         # now encode the parameters explicitly
 529         my @result = ();
 530         for (my $i = 0; $i < @mapping; $i += 2) {
 531                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 532                 if (defined $params{$name}) {
 533                         push @result, $symbol . "=" . esc_param($params{$name});
 534                 }
 535         }
 536         $href .= "?" . join(';', @result) if scalar @result;
 537
 538         return $href;
 539 }
 540
 541
 542 ## ======================================================================
 543 ## validation, quoting/unquoting and escaping
 544
 545 sub validate_pathname {
 546         my $input = shift || return undef;
 547
 548         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 549         # at the beginning, at the end, and between slashes.
 550         # also this catches doubled slashes
 551         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 552                 return undef;
 553         }
 554         # no null characters
 555         if ($input =~ m!\0!) {
 556                 return undef;
 557         }
 558         return $input;
 559 }
 560
 561 sub validate_refname {
 562         my $input = shift || return undef;
 563
 564         # textual hashes are O.K.
 565         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 566                 return $input;
 567         }
 568         # it must be correct pathname
 569         $input = validate_pathname($input)
 570                 or return undef;
 571         # restrictions on ref name according to git-check-ref-format
 572         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 573                 return undef;
 574         }
 575         return $input;
 576 }
 577
 578 # quote unsafe chars, but keep the slash, even when it's not
 579 # correct, but quoted slashes look too horrible in bookmarks
 580 sub esc_param {
 581         my $str = shift;
 582         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 583         $str =~ s/\+/%2B/g;
 584         $str =~ s/ /\+/g;
 585         return $str;
 586 }
 587
 588 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 589 sub esc_url {
 590         my $str = shift;
 591         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 592         $str =~ s/\+/%2B/g;
 593         $str =~ s/ /\+/g;
 594         return $str;
 595 }
 596
 597 # replace invalid utf8 character with SUBSTITUTION sequence
 598 sub esc_html ($;%) {
 599         my $str = shift;
 600         my %opts = @_;
 601
 602         $str = decode_utf8($str);
 603         $str = $cgi->escapeHTML($str);
 604         if ($opts{'-nbsp'}) {
 605                 $str =~ s/ /&nbsp;/g;
 606         }
 607         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 608         return $str;
 609 }
 610
 611 # quote control characters and escape filename to HTML
 612 sub esc_path {
 613         my $str = shift;
 614         my %opts = @_;
 615
 616         $str = decode_utf8($str);
 617         $str = $cgi->escapeHTML($str);
 618         if ($opts{'-nbsp'}) {
 619                 $str =~ s/ /&nbsp;/g;
 620         }
 621         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 622         return $str;
 623 }
 624
 625 # Make control characters "printable", using character escape codes (CEC)
 626 sub quot_cec {
 627         my $cntrl = shift;
 628         my %es = ( # character escape codes, aka escape sequences
 629                    "\t" => '\t',   # tab            (HT)
 630                    "\n" => '\n',   # line feed      (LF)
 631                    "\r" => '\r',   # carrige return (CR)
 632                    "\f" => '\f',   # form feed      (FF)
 633                    "\b" => '\b',   # backspace      (BS)
 634                    "\a" => '\a',   # alarm (bell)   (BEL)
 635                    "\e" => '\e',   # escape         (ESC)
 636                    "\013" => '\v', # vertical tab   (VT)
 637                    "\000" => '\0', # nul character  (NUL)
 638                    );
 639         my $chr = ( (exists $es{$cntrl})
 640                     ? $es{$cntrl}
 641                     : sprintf('\%03o', ord($cntrl)) );
 642         return "<span class=\"cntrl\">$chr</span>";
 643 }
 644
 645 # Alternatively use unicode control pictures codepoints,
 646 # Unicode "printable representation" (PR)
 647 sub quot_upr {
 648         my $cntrl = shift;
 649         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 650         return "<span class=\"cntrl\">$chr</span>";
 651 }
 652
 653 # git may return quoted and escaped filenames
 654 sub unquote {
 655         my $str = shift;
 656
 657         sub unq {
 658                 my $seq = shift;
 659                 my %es = ( # character escape codes, aka escape sequences
 660                         't' => "\t",   # tab            (HT, TAB)
 661                         'n' => "\n",   # newline        (NL)
 662                         'r' => "\r",   # return         (CR)
 663                         'f' => "\f",   # form feed      (FF)
 664                         'b' => "\b",   # backspace      (BS)
 665                         'a' => "\a",   # alarm (bell)   (BEL)
 666                         'e' => "\e",   # escape         (ESC)
 667                         'v' => "\013", # vertical tab   (VT)
 668                 );
 669
 670                 if ($seq =~ m/^[0-7]{1,3}$/) {
 671                         # octal char sequence
 672                         return chr(oct($seq));
 673                 } elsif (exists $es{$seq}) {
 674                         # C escape sequence, aka character escape code
 675                         return $es{$seq}
 676                 }
 677                 # quoted ordinary character
 678                 return $seq;
 679         }
 680
 681         if ($str =~ m/^"(.*)"$/) {
 682                 # needs unquoting
 683                 $str = $1;
 684                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 685         }
 686         return $str;
 687 }
 688
 689 # escape tabs (convert tabs to spaces)
 690 sub untabify {
 691         my $line = shift;
 692
 693         while ((my $pos = index($line, "\t")) != -1) {
 694                 if (my $count = (8 - ($pos % 8))) {
 695                         my $spaces = ' ' x $count;
 696                         $line =~ s/\t/$spaces/;
 697                 }
 698         }
 699
 700         return $line;
 701 }
 702
 703 sub project_in_list {
 704         my $project = shift;
 705         my @list = git_get_projects_list();
 706         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 707 }
 708
 709 ## ----------------------------------------------------------------------
 710 ## HTML aware string manipulation
 711
 712 sub chop_str {
 713         my $str = shift;
 714         my $len = shift;
 715         my $add_len = shift || 10;
 716
 717         # allow only $len chars, but don't cut a word if it would fit in $add_len
 718         # if it doesn't fit, cut it if it's still longer than the dots we would add
 719         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 720         my $body = $1;
 721         my $tail = $2;
 722         if (length($tail) > 4) {
 723                 $tail = " ...";
 724                 $body =~ s/&[^;]*$//; # remove chopped character entities
 725         }
 726         return "$body$tail";
 727 }
 728
 729 ## ----------------------------------------------------------------------
 730 ## functions returning short strings
 731
 732 # CSS class for given age value (in seconds)
 733 sub age_class {
 734         my $age = shift;
 735
 736         if (!defined $age) {
 737                 return "noage";
 738         } elsif ($age < 60*60*2) {
 739                 return "age0";
 740         } elsif ($age < 60*60*24*2) {
 741                 return "age1";
 742         } else {
 743                 return "age2";
 744         }
 745 }
 746
 747 # convert age in seconds to "nn units ago" string
 748 sub age_string {
 749         my $age = shift;
 750         my $age_str;
 751
 752         if ($age > 60*60*24*365*2) {
 753                 $age_str = (int $age/60/60/24/365);
 754                 $age_str .= " years ago";
 755         } elsif ($age > 60*60*24*(365/12)*2) {
 756                 $age_str = int $age/60/60/24/(365/12);
 757                 $age_str .= " months ago";
 758         } elsif ($age > 60*60*24*7*2) {
 759                 $age_str = int $age/60/60/24/7;
 760                 $age_str .= " weeks ago";
 761         } elsif ($age > 60*60*24*2) {
 762                 $age_str = int $age/60/60/24;
 763                 $age_str .= " days ago";
 764         } elsif ($age > 60*60*2) {
 765                 $age_str = int $age/60/60;
 766                 $age_str .= " hours ago";
 767         } elsif ($age > 60*2) {
 768                 $age_str = int $age/60;
 769                 $age_str .= " min ago";
 770         } elsif ($age > 2) {
 771                 $age_str = int $age;
 772                 $age_str .= " sec ago";
 773         } else {
 774                 $age_str .= " right now";
 775         }
 776         return $age_str;
 777 }
 778
 779 # convert file mode in octal to symbolic file mode string
 780 sub mode_str {
 781         my $mode = oct shift;
 782
 783         if (S_ISDIR($mode & S_IFMT)) {
 784                 return 'drwxr-xr-x';
 785         } elsif (S_ISLNK($mode)) {
 786                 return 'lrwxrwxrwx';
 787         } elsif (S_ISREG($mode)) {
 788                 # git cares only about the executable bit
 789                 if ($mode & S_IXUSR) {
 790                         return '-rwxr-xr-x';
 791                 } else {
 792                         return '-rw-r--r--';
 793                 };
 794         } else {
 795                 return '----------';
 796         }
 797 }
 798
 799 # convert file mode in octal to file type string
 800 sub file_type {
 801         my $mode = shift;
 802
 803         if ($mode !~ m/^[0-7]+$/) {
 804                 return $mode;
 805         } else {
 806                 $mode = oct $mode;
 807         }
 808
 809         if (S_ISDIR($mode & S_IFMT)) {
 810                 return "directory";
 811         } elsif (S_ISLNK($mode)) {
 812                 return "symlink";
 813         } elsif (S_ISREG($mode)) {
 814                 return "file";
 815         } else {
 816                 return "unknown";
 817         }
 818 }
 819
 820 # convert file mode in octal to file type description string
 821 sub file_type_long {
 822         my $mode = shift;
 823
 824         if ($mode !~ m/^[0-7]+$/) {
 825                 return $mode;
 826         } else {
 827                 $mode = oct $mode;
 828         }
 829
 830         if (S_ISDIR($mode & S_IFMT)) {
 831                 return "directory";
 832         } elsif (S_ISLNK($mode)) {
 833                 return "symlink";
 834         } elsif (S_ISREG($mode)) {
 835                 if ($mode & S_IXUSR) {
 836                         return "executable";
 837                 } else {
 838                         return "file";
 839                 };
 840         } else {
 841                 return "unknown";
 842         }
 843 }
 844
 845
 846 ## ----------------------------------------------------------------------
 847 ## functions returning short HTML fragments, or transforming HTML fragments
 848 ## which don't belong to other sections
 849
 850 # format line of commit message.
 851 sub format_log_line_html {
 852         my $line = shift;
 853
 854         $line = esc_html($line, -nbsp=>1);
 855         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 856                 my $hash_text = $1;
 857                 my $link =
 858                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 859                                 -class => "text"}, $hash_text);
 860                 $line =~ s/$hash_text/$link/;
 861         }
 862         return $line;
 863 }
 864
 865 # format marker of refs pointing to given object
 866 sub format_ref_marker {
 867         my ($refs, $id) = @_;
 868         my $markers = '';
 869
 870         if (defined $refs->{$id}) {
 871                 foreach my $ref (@{$refs->{$id}}) {
 872                         my ($type, $name) = qw();
 873                         # e.g. tags/v2.6.11 or heads/next
 874                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 875                                 $type = $1;
 876                                 $name = $2;
 877                         } else {
 878                                 $type = "ref";
 879                                 $name = $ref;
 880                         }
 881
 882                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 883                                     esc_html($name) . "</span>";
 884                 }
 885         }
 886
 887         if ($markers) {
 888                 return ' <span class="refs">'. $markers . '</span>';
 889         } else {
 890                 return "";
 891         }
 892 }
 893
 894 # format, perhaps shortened and with markers, title line
 895 sub format_subject_html {
 896         my ($long, $short, $href, $extra) = @_;
 897         $extra = '' unless defined($extra);
 898
 899         if (length($short) < length($long)) {
 900                 return $cgi->a({-href => $href, -class => "list subject",
 901                                 -title => decode_utf8($long)},
 902                        esc_html($short) . $extra);
 903         } else {
 904                 return $cgi->a({-href => $href, -class => "list subject"},
 905                        esc_html($long)  . $extra);
 906         }
 907 }
 908
 909 # format patch (diff) line (rather not to be used for diff headers)
 910 sub format_diff_line {
 911         my $line = shift;
 912         my ($from, $to) = @_;
 913         my $diff_class = "";
 914
 915         chomp $line;
 916
 917         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 918                 # combined diff
 919                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 920                 if ($line =~ m/^\@{3}/) {
 921                         $diff_class = " chunk_header";
 922                 } elsif ($line =~ m/^\\/) {
 923                         $diff_class = " incomplete";
 924                 } elsif ($prefix =~ tr/+/+/) {
 925                         $diff_class = " add";
 926                 } elsif ($prefix =~ tr/-/-/) {
 927                         $diff_class = " rem";
 928                 }
 929         } else {
 930                 # assume ordinary diff
 931                 my $char = substr($line, 0, 1);
 932                 if ($char eq '+') {
 933                         $diff_class = " add";
 934                 } elsif ($char eq '-') {
 935                         $diff_class = " rem";
 936                 } elsif ($char eq '@') {
 937                         $diff_class = " chunk_header";
 938                 } elsif ($char eq "\\") {
 939                         $diff_class = " incomplete";
 940                 }
 941         }
 942         $line = untabify($line);
 943         if ($from && $to && $line =~ m/^\@{2} /) {
 944                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 945                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 946
 947                 $from_lines = 0 unless defined $from_lines;
 948                 $to_lines   = 0 unless defined $to_lines;
 949
 950                 if ($from->{'href'}) {
 951                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 952                                              -class=>"list"}, $from_text);
 953                 }
 954                 if ($to->{'href'}) {
 955                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 956                                              -class=>"list"}, $to_text);
 957                 }
 958                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 959                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 960                 return "<div class=\"diff$diff_class\">$line</div>\n";
 961         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 962                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 963                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 964
 965                 @from_text = split(' ', $ranges);
 966                 for (my $i = 0; $i < @from_text; ++$i) {
 967                         ($from_start[$i], $from_nlines[$i]) =
 968                                 (split(',', substr($from_text[$i], 1)), 0);
 969                 }
 970
 971                 $to_text   = pop @from_text;
 972                 $to_start  = pop @from_start;
 973                 $to_nlines = pop @from_nlines;
 974
 975                 $line = "<span class=\"chunk_info\">$prefix ";
 976                 for (my $i = 0; $i < @from_text; ++$i) {
 977                         if ($from->{'href'}[$i]) {
 978                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 979                                                   -class=>"list"}, $from_text[$i]);
 980                         } else {
 981                                 $line .= $from_text[$i];
 982                         }
 983                         $line .= " ";
 984                 }
 985                 if ($to->{'href'}) {
 986                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 987                                           -class=>"list"}, $to_text);
 988                 } else {
 989                         $line .= $to_text;
 990                 }
 991                 $line .= " $prefix</span>" .
 992                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 993                 return "<div class=\"diff$diff_class\">$line</div>\n";
 994         }
 995         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 996 }
 997
 998 ## ----------------------------------------------------------------------
 999 ## git utility subroutines, invoking git commands
1000
1001 # returns path to the core git executable and the --git-dir parameter as list
1002 sub git_cmd {
1003         return $GIT, '--git-dir='.$git_dir;
1004 }
1005
1006 # returns path to the core git executable and the --git-dir parameter as string
1007 sub git_cmd_str {
1008         return join(' ', git_cmd());
1009 }
1010
1011 # get HEAD ref of given project as hash
1012 sub git_get_head_hash {
1013         my $project = shift;
1014         my $o_git_dir = $git_dir;
1015         my $retval = undef;
1016         $git_dir = "$projectroot/$project";
1017         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1018                 my $head = <$fd>;
1019                 close $fd;
1020                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1021                         $retval = $1;
1022                 }
1023         }
1024         if (defined $o_git_dir) {
1025                 $git_dir = $o_git_dir;
1026         }
1027         return $retval;
1028 }
1029
1030 # get type of given object
1031 sub git_get_type {
1032         my $hash = shift;
1033
1034         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1035         my $type = <$fd>;
1036         close $fd or return;
1037         chomp $type;
1038         return $type;
1039 }
1040
1041 sub git_get_project_config {
1042         my ($key, $type) = @_;
1043
1044         return unless ($key);
1045         $key =~ s/^gitweb\.//;
1046         return if ($key =~ m/\W/);
1047
1048         my @x = (git_cmd(), 'config');
1049         if (defined $type) { push @x, $type; }
1050         push @x, "--get";
1051         push @x, "gitweb.$key";
1052         my $val = qx(@x);
1053         chomp $val;
1054         return ($val);
1055 }
1056
1057 # get hash of given path at given ref
1058 sub git_get_hash_by_path {
1059         my $base = shift;
1060         my $path = shift || return undef;
1061         my $type = shift;
1062
1063         $path =~ s,/+$,,;
1064
1065         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1066                 or die_error(undef, "Open git-ls-tree failed");
1067         my $line = <$fd>;
1068         close $fd or return undef;
1069
1070         if (!defined $line) {
1071                 # there is no tree or hash given by $path at $base
1072                 return undef;
1073         }
1074
1075         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1076         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1077         if (defined $type && $type ne $2) {
1078                 # type doesn't match
1079                 return undef;
1080         }
1081         return $3;
1082 }
1083
1084 # get path of entry with given hash at given tree-ish (ref)
1085 # used to get 'from' filename for combined diff (merge commit) for renames
1086 sub git_get_path_by_hash {
1087         my $base = shift || return;
1088         my $hash = shift || return;
1089
1090         local $/ = "\0";
1091
1092         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1093                 or return undef;
1094         while (my $line = <$fd>) {
1095                 chomp $line;
1096
1097                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1098                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1099                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1100                         close $fd;
1101                         return $1;
1102                 }
1103         }
1104         close $fd;
1105         return undef;
1106 }
1107
1108 ## ......................................................................
1109 ## git utility functions, directly accessing git repository
1110
1111 sub git_get_project_description {
1112         my $path = shift;
1113
1114         open my $fd, "$projectroot/$path/description" or return undef;
1115         my $descr = <$fd>;
1116         close $fd;
1117         if (defined $descr) {
1118                 chomp $descr;
1119         }
1120         return $descr;
1121 }
1122
1123 sub git_get_project_url_list {
1124         my $path = shift;
1125
1126         open my $fd, "$projectroot/$path/cloneurl" or return;
1127         my @git_project_url_list = map { chomp; $_ } <$fd>;
1128         close $fd;
1129
1130         return wantarray ? @git_project_url_list : \@git_project_url_list;
1131 }
1132
1133 sub git_get_projects_list {
1134         my ($filter) = @_;
1135         my @list;
1136
1137         $filter ||= '';
1138         $filter =~ s/\.git$//;
1139
1140         my ($check_forks) = gitweb_check_feature('forks');
1141
1142         if (-d $projects_list) {
1143                 # search in directory
1144                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1145                 # remove the trailing "/"
1146                 $dir =~ s!/+$!!;
1147                 my $pfxlen = length("$dir");
1148
1149                 File::Find::find({
1150                         follow_fast => 1, # follow symbolic links
1151                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1152                         wanted => sub {
1153                                 # skip project-list toplevel, if we get it.
1154                                 return if (m!^[/.]$!);
1155                                 # only directories can be git repositories
1156                                 return unless (-d $_);
1157
1158                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1159                                 # we check related file in $projectroot
1160                                 if ($check_forks and $subdir =~ m#/.#) {
1161                                         $File::Find::prune = 1;
1162                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1163                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1164                                         $File::Find::prune = 1;
1165                                 }
1166                         },
1167                 }, "$dir");
1168
1169         } elsif (-f $projects_list) {
1170                 # read from file(url-encoded):
1171                 # 'git%2Fgit.git Linus+Torvalds'
1172                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1173                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1174                 my %paths;
1175                 open my ($fd), $projects_list or return;
1176         PROJECT:
1177                 while (my $line = <$fd>) {
1178                         chomp $line;
1179                         my ($path, $owner) = split ' ', $line;
1180                         $path = unescape($path);
1181                         $owner = unescape($owner);
1182                         if (!defined $path) {
1183                                 next;
1184                         }
1185                         if ($filter ne '') {
1186                                 # looking for forks;
1187                                 my $pfx = substr($path, 0, length($filter));
1188                                 if ($pfx ne $filter) {
1189                                         next PROJECT;
1190                                 }
1191                                 my $sfx = substr($path, length($filter));
1192                                 if ($sfx !~ /^\/.*\.git$/) {
1193                                         next PROJECT;
1194                                 }
1195                         } elsif ($check_forks) {
1196                         PATH:
1197                                 foreach my $filter (keys %paths) {
1198                                         # looking for forks;
1199                                         my $pfx = substr($path, 0, length($filter));
1200                                         if ($pfx ne $filter) {
1201                                                 next PATH;
1202                                         }
1203                                         my $sfx = substr($path, length($filter));
1204                                         if ($sfx !~ /^\/.*\.git$/) {
1205                                                 next PATH;
1206                                         }
1207                                         # is a fork, don't include it in
1208                                         # the list
1209                                         next PROJECT;
1210                                 }
1211                         }
1212                         if (check_export_ok("$projectroot/$path")) {
1213                                 my $pr = {
1214                                         path => $path,
1215                                         owner => decode_utf8($owner),
1216                                 };
1217                                 push @list, $pr;
1218                                 (my $forks_path = $path) =~ s/\.git$//;
1219                                 $paths{$forks_path}++;
1220                         }
1221                 }
1222                 close $fd;
1223         }
1224         return @list;
1225 }
1226
1227 sub git_get_project_owner {
1228         my $project = shift;
1229         my $owner;
1230
1231         return undef unless $project;
1232
1233         # read from file (url-encoded):
1234         # 'git%2Fgit.git Linus+Torvalds'
1235         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1236         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1237         if (-f $projects_list) {
1238                 open (my $fd , $projects_list);
1239                 while (my $line = <$fd>) {
1240                         chomp $line;
1241                         my ($pr, $ow) = split ' ', $line;
1242                         $pr = unescape($pr);
1243                         $ow = unescape($ow);
1244                         if ($pr eq $project) {
1245                                 $owner = decode_utf8($ow);
1246                                 last;
1247                         }
1248                 }
1249                 close $fd;
1250         }
1251         if (!defined $owner) {
1252                 $owner = get_file_owner("$projectroot/$project");
1253         }
1254
1255         return $owner;
1256 }
1257
1258 sub git_get_last_activity {
1259         my ($path) = @_;
1260         my $fd;
1261
1262         $git_dir = "$projectroot/$path";
1263         open($fd, "-|", git_cmd(), 'for-each-ref',
1264              '--format=%(committer)',
1265              '--sort=-committerdate',
1266              '--count=1',
1267              'refs/heads') or return;
1268         my $most_recent = <$fd>;
1269         close $fd or return;
1270         if (defined $most_recent &&
1271             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1272                 my $timestamp = $1;
1273                 my $age = time - $timestamp;
1274                 return ($age, age_string($age));
1275         }
1276 }
1277
1278 sub git_get_references {
1279         my $type = shift || "";
1280         my %refs;
1281         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1282         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1283         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1284                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1285                 or return;
1286
1287         while (my $line = <$fd>) {
1288                 chomp $line;
1289                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1290                         if (defined $refs{$1}) {
1291                                 push @{$refs{$1}}, $2;
1292                         } else {
1293                                 $refs{$1} = [ $2 ];
1294                         }
1295                 }
1296         }
1297         close $fd or return;
1298         return \%refs;
1299 }
1300
1301 sub git_get_rev_name_tags {
1302         my $hash = shift || return undef;
1303
1304         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1305                 or return;
1306         my $name_rev = <$fd>;
1307         close $fd;
1308
1309         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1310                 return $1;
1311         } else {
1312                 # catches also '$hash undefined' output
1313                 return undef;
1314         }
1315 }
1316
1317 ## ----------------------------------------------------------------------
1318 ## parse to hash functions
1319
1320 sub parse_date {
1321         my $epoch = shift;
1322         my $tz = shift || "-0000";
1323
1324         my %date;
1325         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1326         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1327         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1328         $date{'hour'} = $hour;
1329         $date{'minute'} = $min;
1330         $date{'mday'} = $mday;
1331         $date{'day'} = $days[$wday];
1332         $date{'month'} = $months[$mon];
1333         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1334                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1335         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1336                              $mday, $months[$mon], $hour ,$min;
1337         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1338                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1339
1340         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1341         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1342         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1343         $date{'hour_local'} = $hour;
1344         $date{'minute_local'} = $min;
1345         $date{'tz_local'} = $tz;
1346         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1347                                   1900+$year, $mon+1, $mday,
1348                                   $hour, $min, $sec, $tz);
1349         return %date;
1350 }
1351
1352 sub parse_tag {
1353         my $tag_id = shift;
1354         my %tag;
1355         my @comment;
1356
1357         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1358         $tag{'id'} = $tag_id;
1359         while (my $line = <$fd>) {
1360                 chomp $line;
1361                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1362                         $tag{'object'} = $1;
1363                 } elsif ($line =~ m/^type (.+)$/) {
1364                         $tag{'type'} = $1;
1365                 } elsif ($line =~ m/^tag (.+)$/) {
1366                         $tag{'name'} = $1;
1367                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1368                         $tag{'author'} = $1;
1369                         $tag{'epoch'} = $2;
1370                         $tag{'tz'} = $3;
1371                 } elsif ($line =~ m/--BEGIN/) {
1372                         push @comment, $line;
1373                         last;
1374                 } elsif ($line eq "") {
1375                         last;
1376                 }
1377         }
1378         push @comment, <$fd>;
1379         $tag{'comment'} = \@comment;
1380         close $fd or return;
1381         if (!defined $tag{'name'}) {
1382                 return
1383         };
1384         return %tag
1385 }
1386
1387 sub parse_commit_text {
1388         my ($commit_text, $withparents) = @_;
1389         my @commit_lines = split '\n', $commit_text;
1390         my %co;
1391
1392         pop @commit_lines; # Remove '\0'
1393
1394         if (! @commit_lines) {
1395                 return;
1396         }
1397
1398         my $header = shift @commit_lines;
1399         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1400                 return;
1401         }
1402         ($co{'id'}, my @parents) = split ' ', $header;
1403         while (my $line = shift @commit_lines) {
1404                 last if $line eq "\n";
1405                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1406                         $co{'tree'} = $1;
1407                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1408                         push @parents, $1;
1409                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1410                         $co{'author'} = $1;
1411                         $co{'author_epoch'} = $2;
1412                         $co{'author_tz'} = $3;
1413                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1414                                 $co{'author_name'}  = $1;
1415                                 $co{'author_email'} = $2;
1416                         } else {
1417                                 $co{'author_name'} = $co{'author'};
1418                         }
1419                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1420                         $co{'committer'} = $1;
1421                         $co{'committer_epoch'} = $2;
1422                         $co{'committer_tz'} = $3;
1423                         $co{'committer_name'} = $co{'committer'};
1424                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1425                                 $co{'committer_name'}  = $1;
1426                                 $co{'committer_email'} = $2;
1427                         } else {
1428                                 $co{'committer_name'} = $co{'committer'};
1429                         }
1430                 }
1431         }
1432         if (!defined $co{'tree'}) {
1433                 return;
1434         };
1435         $co{'parents'} = \@parents;
1436         $co{'parent'} = $parents[0];
1437
1438         foreach my $title (@commit_lines) {
1439                 $title =~ s/^    //;
1440                 if ($title ne "") {
1441                         $co{'title'} = chop_str($title, 80, 5);
1442                         # remove leading stuff of merges to make the interesting part visible
1443                         if (length($title) > 50) {
1444                                 $title =~ s/^Automatic //;
1445                                 $title =~ s/^merge (of|with) /Merge ... /i;
1446                                 if (length($title) > 50) {
1447                                         $title =~ s/(http|rsync):\/\///;
1448                                 }
1449                                 if (length($title) > 50) {
1450                                         $title =~ s/(master|www|rsync)\.//;
1451                                 }
1452                                 if (length($title) > 50) {
1453                                         $title =~ s/kernel.org:?//;
1454                                 }
1455                                 if (length($title) > 50) {
1456                                         $title =~ s/\/pub\/scm//;
1457                                 }
1458                         }
1459                         $co{'title_short'} = chop_str($title, 50, 5);
1460                         last;
1461                 }
1462         }
1463         if ($co{'title'} eq "") {
1464                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1465         }
1466         # remove added spaces
1467         foreach my $line (@commit_lines) {
1468                 $line =~ s/^    //;
1469         }
1470         $co{'comment'} = \@commit_lines;
1471
1472         my $age = time - $co{'committer_epoch'};
1473         $co{'age'} = $age;
1474         $co{'age_string'} = age_string($age);
1475         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1476         if ($age > 60*60*24*7*2) {
1477                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1478                 $co{'age_string_age'} = $co{'age_string'};
1479         } else {
1480                 $co{'age_string_date'} = $co{'age_string'};
1481                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1482         }
1483         return %co;
1484 }
1485
1486 sub parse_commit {
1487         my ($commit_id) = @_;
1488         my %co;
1489
1490         local $/ = "\0";
1491
1492         open my $fd, "-|", git_cmd(), "rev-list",
1493                 "--parents",
1494                 "--header",
1495                 "--max-count=1",
1496                 $commit_id,
1497                 "--",
1498                 or die_error(undef, "Open git-rev-list failed");
1499         %co = parse_commit_text(<$fd>, 1);
1500         close $fd;
1501
1502         return %co;
1503 }
1504
1505 sub parse_commits {
1506         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1507         my @cos;
1508
1509         $maxcount ||= 1;
1510         $skip ||= 0;
1511
1512         local $/ = "\0";
1513
1514         open my $fd, "-|", git_cmd(), "rev-list",
1515                 "--header",
1516                 ($arg ? ($arg) : ()),
1517                 ("--max-count=" . $maxcount),
1518                 ("--skip=" . $skip),
1519                 $commit_id,
1520                 "--",
1521                 ($filename ? ($filename) : ())
1522                 or die_error(undef, "Open git-rev-list failed");
1523         while (my $line = <$fd>) {
1524                 my %co = parse_commit_text($line);
1525                 push @cos, \%co;
1526         }
1527         close $fd;
1528
1529         return wantarray ? @cos : \@cos;
1530 }
1531
1532 # parse ref from ref_file, given by ref_id, with given type
1533 sub parse_ref {
1534         my $ref_file = shift;
1535         my $ref_id = shift;
1536         my $type = shift || git_get_type($ref_id);
1537         my %ref_item;
1538
1539         $ref_item{'type'} = $type;
1540         $ref_item{'id'} = $ref_id;
1541         $ref_item{'epoch'} = 0;
1542         $ref_item{'age'} = "unknown";
1543         if ($type eq "tag") {
1544                 my %tag = parse_tag($ref_id);
1545                 $ref_item{'comment'} = $tag{'comment'};
1546                 if ($tag{'type'} eq "commit") {
1547                         my %co = parse_commit($tag{'object'});
1548                         $ref_item{'epoch'} = $co{'committer_epoch'};
1549                         $ref_item{'age'} = $co{'age_string'};
1550                 } elsif (defined($tag{'epoch'})) {
1551                         my $age = time - $tag{'epoch'};
1552                         $ref_item{'epoch'} = $tag{'epoch'};
1553                         $ref_item{'age'} = age_string($age);
1554                 }
1555                 $ref_item{'reftype'} = $tag{'type'};
1556                 $ref_item{'name'} = $tag{'name'};
1557                 $ref_item{'refid'} = $tag{'object'};
1558         } elsif ($type eq "commit"){
1559                 my %co = parse_commit($ref_id);
1560                 $ref_item{'reftype'} = "commit";
1561                 $ref_item{'name'} = $ref_file;
1562                 $ref_item{'title'} = $co{'title'};
1563                 $ref_item{'refid'} = $ref_id;
1564                 $ref_item{'epoch'} = $co{'committer_epoch'};
1565                 $ref_item{'age'} = $co{'age_string'};
1566         } else {
1567                 $ref_item{'reftype'} = $type;
1568                 $ref_item{'name'} = $ref_file;
1569                 $ref_item{'refid'} = $ref_id;
1570         }
1571
1572         return %ref_item;
1573 }
1574
1575 # parse line of git-diff-tree "raw" output
1576 sub parse_difftree_raw_line {
1577         my $line = shift;
1578         my %res;
1579
1580         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1581         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1582         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1583                 $res{'from_mode'} = $1;
1584                 $res{'to_mode'} = $2;
1585                 $res{'from_id'} = $3;
1586                 $res{'to_id'} = $4;
1587                 $res{'status'} = $5;
1588                 $res{'similarity'} = $6;
1589                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1590                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1591                 } else {
1592                         $res{'file'} = unquote($7);
1593                 }
1594         }
1595         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1596         # combined diff (for merge commit)
1597         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1598                 $res{'nparents'}  = length($1);
1599                 $res{'from_mode'} = [ split(' ', $2) ];
1600                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1601                 $res{'from_id'} = [ split(' ', $3) ];
1602                 $res{'to_id'} = pop @{$res{'from_id'}};
1603                 $res{'status'} = [ split('', $4) ];
1604                 $res{'to_file'} = unquote($5);
1605         }
1606         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1607         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1608                 $res{'commit'} = $1;
1609         }
1610
1611         return wantarray ? %res : \%res;
1612 }
1613
1614 # parse line of git-ls-tree output
1615 sub parse_ls_tree_line ($;%) {
1616         my $line = shift;
1617         my %opts = @_;
1618         my %res;
1619
1620         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1621         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1622
1623         $res{'mode'} = $1;
1624         $res{'type'} = $2;
1625         $res{'hash'} = $3;
1626         if ($opts{'-z'}) {
1627                 $res{'name'} = $4;
1628         } else {
1629                 $res{'name'} = unquote($4);
1630         }
1631
1632         return wantarray ? %res : \%res;
1633 }
1634
1635 ## ......................................................................
1636 ## parse to array of hashes functions
1637
1638 sub git_get_heads_list {
1639         my $limit = shift;
1640         my @headslist;
1641
1642         open my $fd, '-|', git_cmd(), 'for-each-ref',
1643                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1644                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1645                 'refs/heads'
1646                 or return;
1647         while (my $line = <$fd>) {
1648                 my %ref_item;
1649
1650                 chomp $line;
1651                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1652                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1653                 my ($committer, $epoch, $tz) =
1654                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1655                 $name =~ s!^refs/heads/!!;
1656
1657                 $ref_item{'name'}  = $name;
1658                 $ref_item{'id'}    = $hash;
1659                 $ref_item{'title'} = $title || '(no commit message)';
1660                 $ref_item{'epoch'} = $epoch;
1661                 if ($epoch) {
1662                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1663                 } else {
1664                         $ref_item{'age'} = "unknown";
1665                 }
1666
1667                 push @headslist, \%ref_item;
1668         }
1669         close $fd;
1670
1671         return wantarray ? @headslist : \@headslist;
1672 }
1673
1674 sub git_get_tags_list {
1675         my $limit = shift;
1676         my @tagslist;
1677
1678         open my $fd, '-|', git_cmd(), 'for-each-ref',
1679                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1680                 '--format=%(objectname) %(objecttype) %(refname) '.
1681                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1682                 'refs/tags'
1683                 or return;
1684         while (my $line = <$fd>) {
1685                 my %ref_item;
1686
1687                 chomp $line;
1688                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1689                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1690                 my ($creator, $epoch, $tz) =
1691                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1692                 $name =~ s!^refs/tags/!!;
1693
1694                 $ref_item{'type'} = $type;
1695                 $ref_item{'id'} = $id;
1696                 $ref_item{'name'} = $name;
1697                 if ($type eq "tag") {
1698                         $ref_item{'subject'} = $title;
1699                         $ref_item{'reftype'} = $reftype;
1700                         $ref_item{'refid'}   = $refid;
1701                 } else {
1702                         $ref_item{'reftype'} = $type;
1703                         $ref_item{'refid'}   = $id;
1704                 }
1705
1706                 if ($type eq "tag" || $type eq "commit") {
1707                         $ref_item{'epoch'} = $epoch;
1708                         if ($epoch) {
1709                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1710                         } else {
1711                                 $ref_item{'age'} = "unknown";
1712                         }
1713                 }
1714
1715                 push @tagslist, \%ref_item;
1716         }
1717         close $fd;
1718
1719         return wantarray ? @tagslist : \@tagslist;
1720 }
1721
1722 ## ----------------------------------------------------------------------
1723 ## filesystem-related functions
1724
1725 sub get_file_owner {
1726         my $path = shift;
1727
1728         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1729         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1730         if (!defined $gcos) {
1731                 return undef;
1732         }
1733         my $owner = $gcos;
1734         $owner =~ s/[,;].*$//;
1735         return decode_utf8($owner);
1736 }
1737
1738 ## ......................................................................
1739 ## mimetype related functions
1740
1741 sub mimetype_guess_file {
1742         my $filename = shift;
1743         my $mimemap = shift;
1744         -r $mimemap or return undef;
1745
1746         my %mimemap;
1747         open(MIME, $mimemap) or return undef;
1748         while (<MIME>) {
1749                 next if m/^#/; # skip comments
1750                 my ($mime, $exts) = split(/\t+/);
1751                 if (defined $exts) {
1752                         my @exts = split(/\s+/, $exts);
1753                         foreach my $ext (@exts) {
1754                                 $mimemap{$ext} = $mime;
1755                         }
1756                 }
1757         }
1758         close(MIME);
1759
1760         $filename =~ /\.([^.]*)$/;
1761         return $mimemap{$1};
1762 }
1763
1764 sub mimetype_guess {
1765         my $filename = shift;
1766         my $mime;
1767         $filename =~ /\./ or return undef;
1768
1769         if ($mimetypes_file) {
1770                 my $file = $mimetypes_file;
1771                 if ($file !~ m!^/!) { # if it is relative path
1772                         # it is relative to project
1773                         $file = "$projectroot/$project/$file";
1774                 }
1775                 $mime = mimetype_guess_file($filename, $file);
1776         }
1777         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1778         return $mime;
1779 }
1780
1781 sub blob_mimetype {
1782         my $fd = shift;
1783         my $filename = shift;
1784
1785         if ($filename) {
1786                 my $mime = mimetype_guess($filename);
1787                 $mime and return $mime;
1788         }
1789
1790         # just in case
1791         return $default_blob_plain_mimetype unless $fd;
1792
1793         if (-T $fd) {
1794                 return 'text/plain' .
1795                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1796         } elsif (! $filename) {
1797                 return 'application/octet-stream';
1798         } elsif ($filename =~ m/\.png$/i) {
1799                 return 'image/png';
1800         } elsif ($filename =~ m/\.gif$/i) {
1801                 return 'image/gif';
1802         } elsif ($filename =~ m/\.jpe?g$/i) {
1803                 return 'image/jpeg';
1804         } else {
1805                 return 'application/octet-stream';
1806         }
1807 }
1808
1809 ## ======================================================================
1810 ## functions printing HTML: header, footer, error page
1811
1812 sub git_header_html {
1813         my $status = shift || "200 OK";
1814         my $expires = shift;
1815
1816         my $title = "$site_name";
1817         if (defined $project) {
1818                 $title .= " - " . decode_utf8($project);
1819                 if (defined $action) {
1820                         $title .= "/$action";
1821                         if (defined $file_name) {
1822                                 $title .= " - " . esc_path($file_name);
1823                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1824                                         $title .= "/";
1825                                 }
1826                         }
1827                 }
1828         }
1829         my $content_type;
1830         # require explicit support from the UA if we are to send the page as
1831         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1832         # we have to do this because MSIE sometimes globs '*/*', pretending to
1833         # support xhtml+xml but choking when it gets what it asked for.
1834         if (defined $cgi->http('HTTP_ACCEPT') &&
1835             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1836             $cgi->Accept('application/xhtml+xml') != 0) {
1837                 $content_type = 'application/xhtml+xml';
1838         } else {
1839                 $content_type = 'text/html';
1840         }
1841         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1842                            -status=> $status, -expires => $expires);
1843         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1844         print <<EOF;
1845 <?xml version="1.0" encoding="utf-8"?>
1846 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1847 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1848 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1849 <!-- git core binaries version $git_version -->
1850 <head>
1851 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1852 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1853 <meta name="robots" content="index, nofollow"/>
1854 <title>$title</title>
1855 EOF
1856 # print out each stylesheet that exist
1857         if (defined $stylesheet) {
1858 #provides backwards capability for those people who define style sheet in a config file
1859                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1860         } else {
1861                 foreach my $stylesheet (@stylesheets) {
1862                         next unless $stylesheet;
1863                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1864                 }
1865         }
1866         if (defined $project) {
1867                 printf('<link rel="alternate" title="%s log RSS feed" '.
1868                        'href="%s" type="application/rss+xml" />'."\n",
1869                        esc_param($project), href(action=>"rss"));
1870                 printf('<link rel="alternate" title="%s log Atom feed" '.
1871                        'href="%s" type="application/atom+xml" />'."\n",
1872                        esc_param($project), href(action=>"atom"));
1873         } else {
1874                 printf('<link rel="alternate" title="%s projects list" '.
1875                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1876                        $site_name, href(project=>undef, action=>"project_index"));
1877                 printf('<link rel="alternate" title="%s projects feeds" '.
1878                        'href="%s" type="text/x-opml"/>'."\n",
1879                        $site_name, href(project=>undef, action=>"opml"));
1880         }
1881         if (defined $favicon) {
1882                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1883         }
1884
1885         print "</head>\n" .
1886               "<body>\n";
1887
1888         if (-f $site_header) {
1889                 open (my $fd, $site_header);
1890                 print <$fd>;
1891                 close $fd;
1892         }
1893
1894         print "<div class=\"page_header\">\n" .
1895               $cgi->a({-href => esc_url($logo_url),
1896                        -title => $logo_label},
1897                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1898         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1899         if (defined $project) {
1900                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1901                 if (defined $action) {
1902                         print " / $action";
1903                 }
1904                 print "\n";
1905         }
1906         print "</div>\n";
1907
1908         my ($have_search) = gitweb_check_feature('search');
1909         if ((defined $project) && ($have_search)) {
1910                 if (!defined $searchtext) {
1911                         $searchtext = "";
1912                 }
1913                 my $search_hash;
1914                 if (defined $hash_base) {
1915                         $search_hash = $hash_base;
1916                 } elsif (defined $hash) {
1917                         $search_hash = $hash;
1918                 } else {
1919                         $search_hash = "HEAD";
1920                 }
1921                 $cgi->param("a", "search");
1922                 $cgi->param("h", $search_hash);
1923                 $cgi->param("p", $project);
1924                 print $cgi->startform(-method => "get", -action => $my_uri) .
1925                       "<div class=\"search\">\n" .
1926                       $cgi->hidden(-name => "p") . "\n" .
1927                       $cgi->hidden(-name => "a") . "\n" .
1928                       $cgi->hidden(-name => "h") . "\n" .
1929                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1930                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1931                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1932                       " search:\n",
1933                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1934                       "</div>" .
1935                       $cgi->end_form() . "\n";
1936         }
1937 }
1938
1939 sub git_footer_html {
1940         print "<div class=\"page_footer\">\n";
1941         if (defined $project) {
1942                 my $descr = git_get_project_description($project);
1943                 if (defined $descr) {
1944                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1945                 }
1946                 print $cgi->a({-href => href(action=>"rss"),
1947                               -class => "rss_logo"}, "RSS") . " ";
1948                 print $cgi->a({-href => href(action=>"atom"),
1949                               -class => "rss_logo"}, "Atom") . "\n";
1950         } else {
1951                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1952                               -class => "rss_logo"}, "OPML") . " ";
1953                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1954                               -class => "rss_logo"}, "TXT") . "\n";
1955         }
1956         print "</div>\n" ;
1957
1958         if (-f $site_footer) {
1959                 open (my $fd, $site_footer);
1960                 print <$fd>;
1961                 close $fd;
1962         }
1963
1964         print "</body>\n" .
1965               "</html>";
1966 }
1967
1968 sub die_error {
1969         my $status = shift || "403 Forbidden";
1970         my $error = shift || "Malformed query, file missing or permission denied";
1971
1972         git_header_html($status);
1973         print <<EOF;
1974 <div class="page_body">
1975 <br /><br />
1976 $status - $error
1977 <br />
1978 </div>
1979 EOF
1980         git_footer_html();
1981         exit;
1982 }
1983
1984 ## ----------------------------------------------------------------------
1985 ## functions printing or outputting HTML: navigation
1986
1987 sub git_print_page_nav {
1988         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1989         $extra = '' if !defined $extra; # pager or formats
1990
1991         my @navs = qw(summary shortlog log commit commitdiff tree);
1992         if ($suppress) {
1993                 @navs = grep { $_ ne $suppress } @navs;
1994         }
1995
1996         my %arg = map { $_ => {action=>$_} } @navs;
1997         if (defined $head) {
1998                 for (qw(commit commitdiff)) {
1999                         $arg{$_}{'hash'} = $head;
2000                 }
2001                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2002                         for (qw(shortlog log)) {
2003                                 $arg{$_}{'hash'} = $head;
2004                         }
2005                 }
2006         }
2007         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2008         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2009
2010         print "<div class=\"page_nav\">\n" .
2011                 (join " | ",
2012                  map { $_ eq $current ?
2013                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2014                  } @navs);
2015         print "<br/>\n$extra<br/>\n" .
2016               "</div>\n";
2017 }
2018
2019 sub format_paging_nav {
2020         my ($action, $hash, $head, $page, $nrevs) = @_;
2021         my $paging_nav;
2022
2023
2024         if ($hash ne $head || $page) {
2025                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2026         } else {
2027                 $paging_nav .= "HEAD";
2028         }
2029
2030         if ($page > 0) {
2031                 $paging_nav .= " &sdot; " .
2032                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2033                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2034         } else {
2035                 $paging_nav .= " &sdot; prev";
2036         }
2037
2038         if ($nrevs >= (100 * ($page+1)-1)) {
2039                 $paging_nav .= " &sdot; " .
2040                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2041                                  -accesskey => "n", -title => "Alt-n"}, "next");
2042         } else {
2043                 $paging_nav .= " &sdot; next";
2044         }
2045
2046         return $paging_nav;
2047 }
2048
2049 ## ......................................................................
2050 ## functions printing or outputting HTML: div
2051
2052 sub git_print_header_div {
2053         my ($action, $title, $hash, $hash_base) = @_;
2054         my %args = ();
2055
2056         $args{'action'} = $action;
2057         $args{'hash'} = $hash if $hash;
2058         $args{'hash_base'} = $hash_base if $hash_base;
2059
2060         print "<div class=\"header\">\n" .
2061               $cgi->a({-href => href(%args), -class => "title"},
2062               $title ? $title : $action) .
2063               "\n</div>\n";
2064 }
2065
2066 #sub git_print_authorship (\%) {
2067 sub git_print_authorship {
2068         my $co = shift;
2069
2070         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2071         print "<div class=\"author_date\">" .
2072               esc_html($co->{'author_name'}) .
2073               " [$ad{'rfc2822'}";
2074         if ($ad{'hour_local'} < 6) {
2075                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2076                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2077         } else {
2078                 printf(" (%02d:%02d %s)",
2079                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2080         }
2081         print "]</div>\n";
2082 }
2083
2084 sub git_print_page_path {
2085         my $name = shift;
2086         my $type = shift;
2087         my $hb = shift;
2088
2089
2090         print "<div class=\"page_path\">";
2091         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2092                       -title => 'tree root'}, decode_utf8("[$project]"));
2093         print " / ";
2094         if (defined $name) {
2095                 my @dirname = split '/', $name;
2096                 my $basename = pop @dirname;
2097                 my $fullname = '';
2098
2099                 foreach my $dir (@dirname) {
2100                         $fullname .= ($fullname ? '/' : '') . $dir;
2101                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2102                                                      hash_base=>$hb),
2103                                       -title => $fullname}, esc_path($dir));
2104                         print " / ";
2105                 }
2106                 if (defined $type && $type eq 'blob') {
2107                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2108                                                      hash_base=>$hb),
2109                                       -title => $name}, esc_path($basename));
2110                 } elsif (defined $type && $type eq 'tree') {
2111                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2112                                                      hash_base=>$hb),
2113                                       -title => $name}, esc_path($basename));
2114                         print " / ";
2115                 } else {
2116                         print esc_path($basename);
2117                 }
2118         }
2119         print "<br/></div>\n";
2120 }
2121
2122 # sub git_print_log (\@;%) {
2123 sub git_print_log ($;%) {
2124         my $log = shift;
2125         my %opts = @_;
2126
2127         if ($opts{'-remove_title'}) {
2128                 # remove title, i.e. first line of log
2129                 shift @$log;
2130         }
2131         # remove leading empty lines
2132         while (defined $log->[0] && $log->[0] eq "") {
2133                 shift @$log;
2134         }
2135
2136         # print log
2137         my $signoff = 0;
2138         my $empty = 0;
2139         foreach my $line (@$log) {
2140                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2141                         $signoff = 1;
2142                         $empty = 0;
2143                         if (! $opts{'-remove_signoff'}) {
2144                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2145                                 next;
2146                         } else {
2147                                 # remove signoff lines
2148                                 next;
2149                         }
2150                 } else {
2151                         $signoff = 0;
2152                 }
2153
2154                 # print only one empty line
2155                 # do not print empty line after signoff
2156                 if ($line eq "") {
2157                         next if ($empty || $signoff);
2158                         $empty = 1;
2159                 } else {
2160                         $empty = 0;
2161                 }
2162
2163                 print format_log_line_html($line) . "<br/>\n";
2164         }
2165
2166         if ($opts{'-final_empty_line'}) {
2167                 # end with single empty line
2168                 print "<br/>\n" unless $empty;
2169         }
2170 }
2171
2172 # return link target (what link points to)
2173 sub git_get_link_target {
2174         my $hash = shift;
2175         my $link_target;
2176
2177         # read link
2178         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2179                 or return;
2180         {
2181                 local $/;
2182                 $link_target = <$fd>;
2183         }
2184         close $fd
2185                 or return;
2186
2187         return $link_target;
2188 }
2189
2190 # given link target, and the directory (basedir) the link is in,
2191 # return target of link relative to top directory (top tree);
2192 # return undef if it is not possible (including absolute links).
2193 sub normalize_link_target {
2194         my ($link_target, $basedir, $hash_base) = @_;
2195
2196         # we can normalize symlink target only if $hash_base is provided
2197         return unless $hash_base;
2198
2199         # absolute symlinks (beginning with '/') cannot be normalized
2200         return if (substr($link_target, 0, 1) eq '/');
2201
2202         # normalize link target to path from top (root) tree (dir)
2203         my $path;
2204         if ($basedir) {
2205                 $path = $basedir . '/' . $link_target;
2206         } else {
2207                 # we are in top (root) tree (dir)
2208                 $path = $link_target;
2209         }
2210
2211         # remove //, /./, and /../
2212         my @path_parts;
2213         foreach my $part (split('/', $path)) {
2214                 # discard '.' and ''
2215                 next if (!$part || $part eq '.');
2216                 # handle '..'
2217                 if ($part eq '..') {
2218                         if (@path_parts) {
2219                                 pop @path_parts;
2220                         } else {
2221                                 # link leads outside repository (outside top dir)
2222                                 return;
2223                         }
2224                 } else {
2225                         push @path_parts, $part;
2226                 }
2227         }
2228         $path = join('/', @path_parts);
2229
2230         return $path;
2231 }
2232
2233 # print tree entry (row of git_tree), but without encompassing <tr> element
2234 sub git_print_tree_entry {
2235         my ($t, $basedir, $hash_base, $have_blame) = @_;
2236
2237         my %base_key = ();
2238         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2239
2240         # The format of a table row is: mode list link.  Where mode is
2241         # the mode of the entry, list is the name of the entry, an href,
2242         # and link is the action links of the entry.
2243
2244         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2245         if ($t->{'type'} eq "blob") {
2246                 print "<td class=\"list\">" .
2247                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2248                                                file_name=>"$basedir$t->{'name'}", %base_key),
2249                                 -class => "list"}, esc_path($t->{'name'}));
2250                 if (S_ISLNK(oct $t->{'mode'})) {
2251                         my $link_target = git_get_link_target($t->{'hash'});
2252                         if ($link_target) {
2253                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2254                                 if (defined $norm_target) {
2255                                         print " -> " .
2256                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2257                                                                      file_name=>$norm_target),
2258                                                        -title => $norm_target}, esc_path($link_target));
2259                                 } else {
2260                                         print " -> " . esc_path($link_target);
2261                                 }
2262                         }
2263                 }
2264                 print "</td>\n";
2265                 print "<td class=\"link\">";
2266                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2267                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2268                               "blob");
2269                 if ($have_blame) {
2270                         print " | " .
2271                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2272                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2273                                       "blame");
2274                 }
2275                 if (defined $hash_base) {
2276                         print " | " .
2277                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2278                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2279                                       "history");
2280                 }
2281                 print " | " .
2282                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2283                                                file_name=>"$basedir$t->{'name'}")},
2284                                 "raw");
2285                 print "</td>\n";
2286
2287         } elsif ($t->{'type'} eq "tree") {
2288                 print "<td class=\"list\">";
2289                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2290                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2291                               esc_path($t->{'name'}));
2292                 print "</td>\n";
2293                 print "<td class=\"link\">";
2294                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2295                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2296                               "tree");
2297                 if (defined $hash_base) {
2298                         print " | " .
2299                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2300                                                      file_name=>"$basedir$t->{'name'}")},
2301                                       "history");
2302                 }
2303                 print "</td>\n";
2304         }
2305 }
2306
2307 ## ......................................................................
2308 ## functions printing large fragments of HTML
2309
2310 sub fill_from_file_info {
2311         my ($diff, @parents) = @_;
2312
2313         $diff->{'from_file'} = [ ];
2314         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2315         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2316                 if ($diff->{'status'}[$i] eq 'R' ||
2317                     $diff->{'status'}[$i] eq 'C') {
2318                         $diff->{'from_file'}[$i] =
2319                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2320                 }
2321         }
2322
2323         return $diff;
2324 }
2325
2326 # parameters can be strings, or references to arrays of strings
2327 sub from_ids_eq {
2328         my ($a, $b) = @_;
2329
2330         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2331                 for (my $i = 0; $i < @$a; ++$i) {
2332                         return 0 unless ($a->[$i] eq $b->[$i]);
2333                 }
2334                 return 1;
2335         } elsif (!ref($a) && !ref($b)) {
2336                 return $a eq $b;
2337         } else {
2338                 return 0;
2339         }
2340 }
2341
2342
2343 sub git_difftree_body {
2344         my ($difftree, $hash, @parents) = @_;
2345         my ($parent) = $parents[0];
2346         my ($have_blame) = gitweb_check_feature('blame');
2347         print "<div class=\"list_head\">\n";
2348         if ($#{$difftree} > 10) {
2349                 print(($#{$difftree} + 1) . " files changed:\n");
2350         }
2351         print "</div>\n";
2352
2353         print "<table class=\"" .
2354               (@parents > 1 ? "combined " : "") .
2355               "diff_tree\">\n";
2356         my $alternate = 1;
2357         my $patchno = 0;
2358         foreach my $line (@{$difftree}) {
2359                 my $diff;
2360                 if (ref($line) eq "HASH") {
2361                         # pre-parsed (or generated by hand)
2362                         $diff = $line;
2363                 } else {
2364                         $diff = parse_difftree_raw_line($line);
2365                 }
2366
2367                 if ($alternate) {
2368                         print "<tr class=\"dark\">\n";
2369                 } else {
2370                         print "<tr class=\"light\">\n";
2371                 }
2372                 $alternate ^= 1;
2373
2374                 if (exists $diff->{'nparents'}) { # combined diff
2375
2376                         fill_from_file_info($diff, @parents)
2377                                 unless exists $diff->{'from_file'};
2378
2379                         if ($diff->{'to_id'} ne ('0' x 40)) {
2380                                 # file exists in the result (child) commit
2381                                 print "<td>" .
2382                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2383                                                              file_name=>$diff->{'to_file'},
2384                                                              hash_base=>$hash),
2385                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2386                                       "</td>\n";
2387                         } else {
2388                                 print "<td>" .
2389                                       esc_path($diff->{'to_file'}) .
2390                                       "</td>\n";
2391                         }
2392
2393                         if ($action eq 'commitdiff') {
2394                                 # link to patch
2395                                 $patchno++;
2396                                 print "<td class=\"link\">" .
2397                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2398                                       " | " .
2399                                       "</td>\n";
2400                         }
2401
2402                         my $has_history = 0;
2403                         my $not_deleted = 0;
2404                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2405                                 my $hash_parent = $parents[$i];
2406                                 my $from_hash = $diff->{'from_id'}[$i];
2407                                 my $from_path = $diff->{'from_file'}[$i];
2408                                 my $status = $diff->{'status'}[$i];
2409
2410                                 $has_history ||= ($status ne 'A');
2411                                 $not_deleted ||= ($status ne 'D');
2412
2413                                 if ($status eq 'A') {
2414                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2415                                 } elsif ($status eq 'D') {
2416                                         print "<td class=\"link\">" .
2417                                               $cgi->a({-href => href(action=>"blob",
2418                                                                      hash_base=>$hash,
2419                                                                      hash=>$from_hash,
2420                                                                      file_name=>$from_path)},
2421                                                       "blob" . ($i+1)) .
2422                                               " | </td>\n";
2423                                 } else {
2424                                         if ($diff->{'to_id'} eq $from_hash) {
2425                                                 print "<td class=\"link nochange\">";
2426                                         } else {
2427                                                 print "<td class=\"link\">";
2428                                         }
2429                                         print $cgi->a({-href => href(action=>"blobdiff",
2430                                                                      hash=>$diff->{'to_id'},
2431                                                                      hash_parent=>$from_hash,
2432                                                                      hash_base=>$hash,
2433                                                                      hash_parent_base=>$hash_parent,
2434                                                                      file_name=>$diff->{'to_file'},
2435                                                                      file_parent=>$from_path)},
2436                                                       "diff" . ($i+1)) .
2437                                               " | </td>\n";
2438                                 }
2439                         }
2440
2441                         print "<td class=\"link\">";
2442                         if ($not_deleted) {
2443                                 print $cgi->a({-href => href(action=>"blob",
2444                                                              hash=>$diff->{'to_id'},
2445                                                              file_name=>$diff->{'to_file'},
2446                                                              hash_base=>$hash)},
2447                                               "blob");
2448                                 print " | " if ($has_history);
2449                         }
2450                         if ($has_history) {
2451                                 print $cgi->a({-href => href(action=>"history",
2452                                                              file_name=>$diff->{'to_file'},
2453                                                              hash_base=>$hash)},
2454                                               "history");
2455                         }
2456                         print "</td>\n";
2457
2458                         print "</tr>\n";
2459                         next; # instead of 'else' clause, to avoid extra indent
2460                 }
2461                 # else ordinary diff
2462
2463                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2464                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2465                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2466                         $to_mode_oct = oct $diff->{'to_mode'};
2467                         if (S_ISREG($to_mode_oct)) { # only for regular file
2468                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2469                         }
2470                         $to_file_type = file_type($diff->{'to_mode'});
2471                 }
2472                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2473                         $from_mode_oct = oct $diff->{'from_mode'};
2474                         if (S_ISREG($to_mode_oct)) { # only for regular file
2475                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2476                         }
2477                         $from_file_type = file_type($diff->{'from_mode'});
2478                 }
2479
2480                 if ($diff->{'status'} eq "A") { # created
2481                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2482                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2483                         $mode_chng   .= "]</span>";
2484                         print "<td>";
2485                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2486                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2487                                       -class => "list"}, esc_path($diff->{'file'}));
2488                         print "</td>\n";
2489                         print "<td>$mode_chng</td>\n";
2490                         print "<td class=\"link\">";
2491                         if ($action eq 'commitdiff') {
2492                                 # link to patch
2493                                 $patchno++;
2494                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2495                                 print " | ";
2496                         }
2497                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2498                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2499                                       "blob");
2500                         print "</td>\n";
2501
2502                 } elsif ($diff->{'status'} eq "D") { # deleted
2503                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2504                         print "<td>";
2505                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2506                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2507                                        -class => "list"}, esc_path($diff->{'file'}));
2508                         print "</td>\n";
2509                         print "<td>$mode_chng</td>\n";
2510                         print "<td class=\"link\">";
2511                         if ($action eq 'commitdiff') {
2512                                 # link to patch
2513                                 $patchno++;
2514                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2515                                 print " | ";
2516                         }
2517                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2518                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2519                                       "blob") . " | ";
2520                         if ($have_blame) {
2521                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2522                                                              file_name=>$diff->{'file'})},
2523                                               "blame") . " | ";
2524                         }
2525                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2526                                                      file_name=>$diff->{'file'})},
2527                                       "history");
2528                         print "</td>\n";
2529
2530                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2531                         my $mode_chnge = "";
2532                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2533                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2534                                 if ($from_file_type ne $to_file_type) {
2535                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2536                                 }
2537                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2538                                         if ($from_mode_str && $to_mode_str) {
2539                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2540                                         } elsif ($to_mode_str) {
2541                                                 $mode_chnge .= " mode: $to_mode_str";
2542                                         }
2543                                 }
2544                                 $mode_chnge .= "]</span>\n";
2545                         }
2546                         print "<td>";
2547                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2548                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2549                                       -class => "list"}, esc_path($diff->{'file'}));
2550                         print "</td>\n";
2551                         print "<td>$mode_chnge</td>\n";
2552                         print "<td class=\"link\">";
2553                         if ($action eq 'commitdiff') {
2554                                 # link to patch
2555                                 $patchno++;
2556                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2557                                       " | ";
2558                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2559                                 # "commit" view and modified file (not onlu mode changed)
2560                                 print $cgi->a({-href => href(action=>"blobdiff",
2561                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2562                                                              hash_base=>$hash, hash_parent_base=>$parent,
2563                                                              file_name=>$diff->{'file'})},
2564                                               "diff") .
2565                                       " | ";
2566                         }
2567                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2568                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2569                                        "blob") . " | ";
2570                         if ($have_blame) {
2571                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2572                                                              file_name=>$diff->{'file'})},
2573                                               "blame") . " | ";
2574                         }
2575                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2576                                                      file_name=>$diff->{'file'})},
2577                                       "history");
2578                         print "</td>\n";
2579
2580                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2581                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2582                         my $nstatus = $status_name{$diff->{'status'}};
2583                         my $mode_chng = "";
2584                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2585                                 # mode also for directories, so we cannot use $to_mode_str
2586                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2587                         }
2588                         print "<td>" .
2589                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2590                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2591                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2592                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2593                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2594                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2595                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2596                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2597                               "<td class=\"link\">";
2598                         if ($action eq 'commitdiff') {
2599                                 # link to patch
2600                                 $patchno++;
2601                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2602                                       " | ";
2603                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2604                                 # "commit" view and modified file (not only pure rename or copy)
2605                                 print $cgi->a({-href => href(action=>"blobdiff",
2606                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2607                                                              hash_base=>$hash, hash_parent_base=>$parent,
2608                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2609                                               "diff") .
2610                                       " | ";
2611                         }
2612                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2613                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2614                                       "blob") . " | ";
2615                         if ($have_blame) {
2616                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2617                                                              file_name=>$diff->{'to_file'})},
2618                                               "blame") . " | ";
2619                         }
2620                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2621                                                     file_name=>$diff->{'to_file'})},
2622                                       "history");
2623                         print "</td>\n";
2624
2625                 } # we should not encounter Unmerged (U) or Unknown (X) status
2626                 print "</tr>\n";
2627         }
2628         print "</table>\n";
2629 }
2630
2631 sub git_patchset_body {
2632         my ($fd, $difftree, $hash, @hash_parents) = @_;
2633         my ($hash_parent) = $hash_parents[0];
2634
2635         my $patch_idx = 0;
2636         my $patch_number = 0;
2637         my $patch_line;
2638         my $diffinfo;
2639         my (%from, %to);
2640
2641         print "<div class=\"patchset\">\n";
2642
2643         # skip to first patch
2644         while ($patch_line = <$fd>) {
2645                 chomp $patch_line;
2646
2647                 last if ($patch_line =~ m/^diff /);
2648         }
2649
2650  PATCH:
2651         while ($patch_line) {
2652                 my @diff_header;
2653                 my ($from_id, $to_id);
2654
2655                 # git diff header
2656                 #assert($patch_line =~ m/^diff /) if DEBUG;
2657                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2658                 $patch_number++;
2659                 push @diff_header, $patch_line;
2660
2661                 # extended diff header
2662         EXTENDED_HEADER:
2663                 while ($patch_line = <$fd>) {
2664                         chomp $patch_line;
2665
2666                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2667
2668                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2669                                 $from_id = $1;
2670                                 $to_id   = $2;
2671                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2672                                 $from_id = [ split(',', $1) ];
2673                                 $to_id   = $2;
2674                         }
2675
2676                         push @diff_header, $patch_line;
2677                 }
2678                 my $last_patch_line = $patch_line;
2679
2680                 # check if current patch belong to current raw line
2681                 # and parse raw git-diff line if needed
2682                 if (defined $diffinfo &&
2683                     defined $from_id && defined $to_id &&
2684                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2685                     $diffinfo->{'to_id'} eq $to_id) {
2686                         # this is continuation of a split patch
2687                         print "<div class=\"patch cont\">\n";
2688                 } else {
2689                         # advance raw git-diff output if needed
2690                         $patch_idx++ if defined $diffinfo;
2691
2692                         # read and prepare patch information
2693                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2694                                 # pre-parsed (or generated by hand)
2695                                 $diffinfo = $difftree->[$patch_idx];
2696                         } else {
2697                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2698                         }
2699                         if ($diffinfo->{'nparents'}) {
2700                                 # combined diff
2701                                 $from{'file'} = [];
2702                                 $from{'href'} = [];
2703                                 fill_from_file_info($diffinfo, @hash_parents)
2704                                         unless exists $diffinfo->{'from_file'};
2705                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2706                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2707                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2708                                                 $from{'href'}[$i] = href(action=>"blob",
2709                                                                          hash_base=>$hash_parents[$i],
2710                                                                          hash=>$diffinfo->{'from_id'}[$i],
2711                                                                          file_name=>$from{'file'}[$i]);
2712                                         } else {
2713                                                 $from{'href'}[$i] = undef;
2714                                         }
2715                                 }
2716                         } else {
2717                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2718                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2719                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2720                                                              hash=>$diffinfo->{'from_id'},
2721                                                              file_name=>$from{'file'});
2722                                 } else {
2723                                         delete $from{'href'};
2724                                 }
2725                         }
2726
2727                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2728                         if ($diffinfo->{'to_id'} ne ('0' x 40)) { # file exists in result
2729                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2730                                                    hash=>$diffinfo->{'to_id'},
2731                                                    file_name=>$to{'file'});
2732                         } else {
2733                                 delete $to{'href'};
2734                         }
2735                         # this is first patch for raw difftree line with $patch_idx index
2736                         # we index @$difftree array from 0, but number patches from 1
2737                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2738                 }
2739
2740                 # print "git diff" header
2741                 $patch_line = shift @diff_header;
2742                 if ($diffinfo->{'nparents'}) {
2743
2744                         # combined diff
2745                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2746                         if ($to{'href'}) {
2747                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2748                                                        esc_path($to{'file'}));
2749                         } else { # file was deleted
2750                                 $patch_line .= esc_path($to{'file'});
2751                         }
2752
2753                 } else {
2754
2755                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2756                         if ($from{'href'}) {
2757                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2758                                                        'a/' . esc_path($from{'file'}));
2759                         } else { # file was added
2760                                 $patch_line .= 'a/' . esc_path($from{'file'});
2761                         }
2762                         $patch_line .= ' ';
2763                         if ($to{'href'}) {
2764                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2765                                                        'b/' . esc_path($to{'file'}));
2766                         } else { # file was deleted
2767                                 $patch_line .= 'b/' . esc_path($to{'file'});
2768                         }
2769
2770                 }
2771                 print "<div class=\"diff header\">$patch_line</div>\n";
2772
2773                 # print extended diff header
2774                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2775         EXTENDED_HEADER:
2776                 foreach $patch_line (@diff_header) {
2777                         # match <path>
2778                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2779                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2780                                                        esc_path($from{'file'}));
2781                         }
2782                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2783                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2784                                                        esc_path($to{'file'}));
2785                         }
2786                         # match single <mode>
2787                         if ($patch_line =~ m/\s(\d{6})$/) {
2788                                 $patch_line .= '<span class="info"> (' .
2789                                                file_type_long($1) .
2790                                                ')</span>';
2791                         }
2792                         # match <hash>
2793                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2794                                 # can match only for combined diff
2795                                 $patch_line = 'index ';
2796                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2797                                         if ($from{'href'}[$i]) {
2798                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2799                                                                         -class=>"hash"},
2800                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2801                                         } else {
2802                                                 $patch_line .= '0' x 7;
2803                                         }
2804                                         # separator
2805                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2806                                 }
2807                                 $patch_line .= '..';
2808                                 if ($to{'href'}) {
2809                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2810                                                                substr($diffinfo->{'to_id'},0,7));
2811                                 } else {
2812                                         $patch_line .= '0' x 7;
2813                                 }
2814
2815                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2816                                 # can match only for ordinary diff
2817                                 my ($from_link, $to_link);
2818                                 if ($from{'href'}) {
2819                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2820                                                              substr($diffinfo->{'from_id'},0,7));
2821                                 } else {
2822                                         $from_link = '0' x 7;
2823                                 }
2824                                 if ($to{'href'}) {
2825                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2826                                                            substr($diffinfo->{'to_id'},0,7));
2827                                 } else {
2828                                         $to_link = '0' x 7;
2829                                 }
2830                                 #affirm {
2831                                 #       my ($from_hash, $to_hash) =
2832                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2833                                 #       my ($from_id, $to_id) =
2834                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2835                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2836                                 #} if DEBUG;
2837                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2838                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2839                         }
2840                         print $patch_line . "<br/>\n";
2841                 }
2842                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2843
2844                 # from-file/to-file diff header
2845                 $patch_line = $last_patch_line;
2846                 if (! $patch_line) {
2847                         print "</div>\n"; # class="patch"
2848                         last PATCH;
2849                 }
2850                 next PATCH if ($patch_line =~ m/^diff /);
2851                 #assert($patch_line =~ m/^---/) if DEBUG;
2852                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2853                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2854                         $patch_line = '--- a/' .
2855                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2856                                               esc_path($from{'file'}));
2857                 }
2858                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2859
2860                 $patch_line = <$fd>;
2861                 chomp $patch_line;
2862
2863                 #assert($patch_line =~ m/^+++/) if DEBUG;
2864                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2865                         $patch_line = '+++ b/' .
2866                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2867                                               esc_path($to{'file'}));
2868                 }
2869                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2870
2871                 # the patch itself
2872         LINE:
2873                 while ($patch_line = <$fd>) {
2874                         chomp $patch_line;
2875
2876                         next PATCH if ($patch_line =~ m/^diff /);
2877
2878                         print format_diff_line($patch_line, \%from, \%to);
2879                 }
2880
2881         } continue {
2882                 print "</div>\n"; # class="patch"
2883         }
2884
2885         if ($patch_number == 0) {
2886                 if (@hash_parents > 1) {
2887                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
2888                 } else {
2889                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
2890                 }
2891         }
2892
2893         print "</div>\n"; # class="patchset"
2894 }
2895
2896 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2897
2898 sub git_project_list_body {
2899         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2900
2901         my ($check_forks) = gitweb_check_feature('forks');
2902
2903         my @projects;
2904         foreach my $pr (@$projlist) {
2905                 my (@aa) = git_get_last_activity($pr->{'path'});
2906                 unless (@aa) {
2907                         next;
2908                 }
2909                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2910                 if (!defined $pr->{'descr'}) {
2911                         my $descr = git_get_project_description($pr->{'path'}) || "";
2912                         $pr->{'descr_long'} = decode_utf8($descr);
2913                         $pr->{'descr'} = chop_str($descr, 25, 5);
2914                 }
2915                 if (!defined $pr->{'owner'}) {
2916                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2917                 }
2918                 if ($check_forks) {
2919                         my $pname = $pr->{'path'};
2920                         if (($pname =~ s/\.git$//) &&
2921                             ($pname !~ /\/$/) &&
2922                             (-d "$projectroot/$pname")) {
2923                                 $pr->{'forks'} = "-d $projectroot/$pname";
2924                         }
2925                         else {
2926                                 $pr->{'forks'} = 0;
2927                         }
2928                 }
2929                 push @projects, $pr;
2930         }
2931
2932         $order ||= $default_projects_order;
2933         $from = 0 unless defined $from;
2934         $to = $#projects if (!defined $to || $#projects < $to);
2935
2936         print "<table class=\"project_list\">\n";
2937         unless ($no_header) {
2938                 print "<tr>\n";
2939                 if ($check_forks) {
2940                         print "<th></th>\n";
2941                 }
2942                 if ($order eq "project") {
2943                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2944                         print "<th>Project</th>\n";
2945                 } else {
2946                         print "<th>" .
2947                               $cgi->a({-href => href(project=>undef, order=>'project'),
2948                                        -class => "header"}, "Project") .
2949                               "</th>\n";
2950                 }
2951                 if ($order eq "descr") {
2952                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2953                         print "<th>Description</th>\n";
2954                 } else {
2955                         print "<th>" .
2956                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2957                                        -class => "header"}, "Description") .
2958                               "</th>\n";
2959                 }
2960                 if ($order eq "owner") {
2961                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2962                         print "<th>Owner</th>\n";
2963                 } else {
2964                         print "<th>" .
2965                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2966                                        -class => "header"}, "Owner") .
2967                               "</th>\n";
2968                 }
2969                 if ($order eq "age") {
2970                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2971                         print "<th>Last Change</th>\n";
2972                 } else {
2973                         print "<th>" .
2974                               $cgi->a({-href => href(project=>undef, order=>'age'),
2975                                        -class => "header"}, "Last Change") .
2976                               "</th>\n";
2977                 }
2978                 print "<th></th>\n" .
2979                       "</tr>\n";
2980         }
2981         my $alternate = 1;
2982         for (my $i = $from; $i <= $to; $i++) {
2983                 my $pr = $projects[$i];
2984                 if ($alternate) {
2985                         print "<tr class=\"dark\">\n";
2986                 } else {
2987                         print "<tr class=\"light\">\n";
2988                 }
2989                 $alternate ^= 1;
2990                 if ($check_forks) {
2991                         print "<td>";
2992                         if ($pr->{'forks'}) {
2993                                 print "<!-- $pr->{'forks'} -->\n";
2994                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2995                         }
2996                         print "</td>\n";
2997                 }
2998                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2999                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3000                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3001                                         -class => "list", -title => $pr->{'descr_long'}},
3002                                         esc_html($pr->{'descr'})) . "</td>\n" .
3003                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3004                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3005                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3006                       "<td class=\"link\">" .
3007                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3008                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3009                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3010                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3011                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3012                       "</td>\n" .
3013                       "</tr>\n";
3014         }
3015         if (defined $extra) {
3016                 print "<tr>\n";
3017                 if ($check_forks) {
3018                         print "<td></td>\n";
3019                 }
3020                 print "<td colspan=\"5\">$extra</td>\n" .
3021                       "</tr>\n";
3022         }
3023         print "</table>\n";
3024 }
3025
3026 sub git_shortlog_body {
3027         # uses global variable $project
3028         my ($commitlist, $from, $to, $refs, $extra) = @_;
3029
3030         my $have_snapshot = gitweb_have_snapshot();
3031
3032         $from = 0 unless defined $from;
3033         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3034
3035         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3036         my $alternate = 1;
3037         for (my $i = $from; $i <= $to; $i++) {
3038                 my %co = %{$commitlist->[$i]};
3039                 my $commit = $co{'id'};
3040                 my $ref = format_ref_marker($refs, $commit);
3041                 if ($alternate) {
3042                         print "<tr class=\"dark\">\n";
3043                 } else {
3044                         print "<tr class=\"light\">\n";
3045                 }
3046                 $alternate ^= 1;
3047                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3048                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3049                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3050                       "<td>";
3051                 print format_subject_html($co{'title'}, $co{'title_short'},
3052                                           href(action=>"commit", hash=>$commit), $ref);
3053                 print "</td>\n" .
3054                       "<td class=\"link\">" .
3055                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3056                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3057                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3058                 if ($have_snapshot) {
3059                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3060                 }
3061                 print "</td>\n" .
3062                       "</tr>\n";
3063         }
3064         if (defined $extra) {
3065                 print "<tr>\n" .
3066                       "<td colspan=\"4\">$extra</td>\n" .
3067                       "</tr>\n";
3068         }
3069         print "</table>\n";
3070 }
3071
3072 sub git_history_body {
3073         # Warning: assumes constant type (blob or tree) during history
3074         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3075
3076         $from = 0 unless defined $from;
3077         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3078
3079         print "<table class=\"history\" cellspacing=\"0\">\n";
3080         my $alternate = 1;
3081         for (my $i = $from; $i <= $to; $i++) {
3082                 my %co = %{$commitlist->[$i]};
3083                 if (!%co) {
3084                         next;
3085                 }
3086                 my $commit = $co{'id'};
3087
3088                 my $ref = format_ref_marker($refs, $commit);
3089
3090                 if ($alternate) {
3091                         print "<tr class=\"dark\">\n";
3092                 } else {
3093                         print "<tr class=\"light\">\n";
3094                 }
3095                 $alternate ^= 1;
3096                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3097                       # shortlog uses      chop_str($co{'author_name'}, 10)
3098                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3099                       "<td>";
3100                 # originally git_history used chop_str($co{'title'}, 50)
3101                 print format_subject_html($co{'title'}, $co{'title_short'},
3102                                           href(action=>"commit", hash=>$commit), $ref);
3103                 print "</td>\n" .
3104                       "<td class=\"link\">" .
3105                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3106                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3107
3108                 if ($ftype eq 'blob') {
3109                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3110                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3111                         if (defined $blob_current && defined $blob_parent &&
3112                                         $blob_current ne $blob_parent) {
3113                                 print " | " .
3114                                         $cgi->a({-href => href(action=>"blobdiff",
3115                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3116                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3117                                                                file_name=>$file_name)},
3118                                                 "diff to current");
3119                         }
3120                 }
3121                 print "</td>\n" .
3122                       "</tr>\n";
3123         }
3124         if (defined $extra) {
3125                 print "<tr>\n" .
3126                       "<td colspan=\"4\">$extra</td>\n" .
3127                       "</tr>\n";
3128         }
3129         print "</table>\n";
3130 }
3131
3132 sub git_tags_body {
3133         # uses global variable $project
3134         my ($taglist, $from, $to, $extra) = @_;
3135         $from = 0 unless defined $from;
3136         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3137
3138         print "<table class=\"tags\" cellspacing=\"0\">\n";
3139         my $alternate = 1;
3140         for (my $i = $from; $i <= $to; $i++) {
3141                 my $entry = $taglist->[$i];
3142                 my %tag = %$entry;
3143                 my $comment = $tag{'subject'};
3144                 my $comment_short;
3145                 if (defined $comment) {
3146                         $comment_short = chop_str($comment, 30, 5);
3147                 }
3148                 if ($alternate) {
3149                         print "<tr class=\"dark\">\n";
3150                 } else {
3151                         print "<tr class=\"light\">\n";
3152                 }
3153                 $alternate ^= 1;
3154                 if (defined $tag{'age'}) {
3155                         print "<td><i>$tag{'age'}</i></td>\n";
3156                 } else {
3157                         print "<td></td>\n";
3158                 }
3159                 print "<td>" .
3160                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3161                                -class => "list name"}, esc_html($tag{'name'})) .
3162                       "</td>\n" .
3163                       "<td>";
3164                 if (defined $comment) {
3165                         print format_subject_html($comment, $comment_short,
3166                                                   href(action=>"tag", hash=>$tag{'id'}));
3167                 }
3168                 print "</td>\n" .
3169                       "<td class=\"selflink\">";
3170                 if ($tag{'type'} eq "tag") {
3171                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3172                 } else {
3173                         print "&nbsp;";
3174                 }
3175                 print "</td>\n" .
3176                       "<td class=\"link\">" . " | " .
3177                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3178                 if ($tag{'reftype'} eq "commit") {
3179                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3180                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3181                 } elsif ($tag{'reftype'} eq "blob") {
3182                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3183                 }
3184                 print "</td>\n" .
3185                       "</tr>";
3186         }
3187         if (defined $extra) {
3188                 print "<tr>\n" .
3189                       "<td colspan=\"5\">$extra</td>\n" .
3190                       "</tr>\n";
3191         }
3192         print "</table>\n";
3193 }
3194
3195 sub git_heads_body {
3196         # uses global variable $project
3197         my ($headlist, $head, $from, $to, $extra) = @_;
3198         $from = 0 unless defined $from;
3199         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3200
3201         print "<table class=\"heads\" cellspacing=\"0\">\n";
3202         my $alternate = 1;
3203         for (my $i = $from; $i <= $to; $i++) {
3204                 my $entry = $headlist->[$i];
3205                 my %ref = %$entry;
3206                 my $curr = $ref{'id'} eq $head;
3207                 if ($alternate) {
3208                         print "<tr class=\"dark\">\n";
3209                 } else {
3210                         print "<tr class=\"light\">\n";
3211                 }
3212                 $alternate ^= 1;
3213                 print "<td><i>$ref{'age'}</i></td>\n" .
3214                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3215                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3216                                -class => "list name"},esc_html($ref{'name'})) .
3217                       "</td>\n" .
3218                       "<td class=\"link\">" .
3219                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3220                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3221                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3222                       "</td>\n" .
3223                       "</tr>";
3224         }
3225         if (defined $extra) {
3226                 print "<tr>\n" .
3227                       "<td colspan=\"3\">$extra</td>\n" .
3228                       "</tr>\n";
3229         }
3230         print "</table>\n";
3231 }
3232
3233 sub git_search_grep_body {
3234         my ($commitlist, $from, $to, $extra) = @_;
3235         $from = 0 unless defined $from;
3236         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3237
3238         print "<table class=\"grep\" cellspacing=\"0\">\n";
3239         my $alternate = 1;
3240         for (my $i = $from; $i <= $to; $i++) {
3241                 my %co = %{$commitlist->[$i]};
3242                 if (!%co) {
3243                         next;
3244                 }
3245                 my $commit = $co{'id'};
3246                 if ($alternate) {
3247                         print "<tr class=\"dark\">\n";
3248                 } else {
3249                         print "<tr class=\"light\">\n";
3250                 }
3251                 $alternate ^= 1;
3252                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3253                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3254                       "<td>" .
3255                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3256                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3257                 my $comment = $co{'comment'};
3258                 foreach my $line (@$comment) {
3259                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3260                                 my $lead = esc_html($1) || "";
3261                                 $lead = chop_str($lead, 30, 10);
3262                                 my $match = esc_html($2) || "";
3263                                 my $trail = esc_html($3) || "";
3264                                 $trail = chop_str($trail, 30, 10);
3265                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3266                                 print chop_str($text, 80, 5) . "<br/>\n";
3267                         }
3268                 }
3269                 print "</td>\n" .
3270                       "<td class=\"link\">" .
3271                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3272                       " | " .
3273                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3274                 print "</td>\n" .
3275                       "</tr>\n";
3276         }
3277         if (defined $extra) {
3278                 print "<tr>\n" .
3279                       "<td colspan=\"3\">$extra</td>\n" .
3280                       "</tr>\n";
3281         }
3282         print "</table>\n";
3283 }
3284
3285 ## ======================================================================
3286 ## ======================================================================
3287 ## actions
3288
3289 sub git_project_list {
3290         my $order = $cgi->param('o');
3291         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3292                 die_error(undef, "Unknown order parameter");
3293         }
3294
3295         my @list = git_get_projects_list();
3296         if (!@list) {
3297                 die_error(undef, "No projects found");
3298         }
3299
3300         git_header_html();
3301         if (-f $home_text) {
3302                 print "<div class=\"index_include\">\n";
3303                 open (my $fd, $home_text);
3304                 print <$fd>;
3305                 close $fd;
3306                 print "</div>\n";
3307         }
3308         git_project_list_body(\@list, $order);
3309         git_footer_html();
3310 }
3311
3312 sub git_forks {
3313         my $order = $cgi->param('o');
3314         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3315                 die_error(undef, "Unknown order parameter");
3316         }
3317
3318         my @list = git_get_projects_list($project);
3319         if (!@list) {
3320                 die_error(undef, "No forks found");
3321         }
3322
3323         git_header_html();
3324         git_print_page_nav('','');
3325         git_print_header_div('summary', "$project forks");
3326         git_project_list_body(\@list, $order);
3327         git_footer_html();
3328 }
3329
3330 sub git_project_index {
3331         my @projects = git_get_projects_list($project);
3332
3333         print $cgi->header(
3334                 -type => 'text/plain',
3335                 -charset => 'utf-8',
3336                 -content_disposition => 'inline; filename="index.aux"');
3337
3338         foreach my $pr (@projects) {
3339                 if (!exists $pr->{'owner'}) {
3340                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3341                 }
3342
3343                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3344                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3345                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3346                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3347                 $path  =~ s/ /\+/g;
3348                 $owner =~ s/ /\+/g;
3349
3350                 print "$path $owner\n";
3351         }
3352 }
3353
3354 sub git_summary {
3355         my $descr = git_get_project_description($project) || "none";
3356         my %co = parse_commit("HEAD");
3357         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3358         my $head = $co{'id'};
3359
3360         my $owner = git_get_project_owner($project);
3361
3362         my $refs = git_get_references();
3363         # These get_*_list functions return one more to allow us to see if
3364         # there are more ...
3365         my @taglist  = git_get_tags_list(16);
3366         my @headlist = git_get_heads_list(16);
3367         my @forklist;
3368         my ($check_forks) = gitweb_check_feature('forks');
3369
3370         if ($check_forks) {
3371                 @forklist = git_get_projects_list($project);
3372         }
3373
3374         git_header_html();
3375         git_print_page_nav('summary','', $head);
3376
3377         print "<div class=\"title\">&nbsp;</div>\n";
3378         print "<table cellspacing=\"0\">\n" .
3379               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3380               "<tr><td>owner</td><td>$owner</td></tr>\n";
3381         if (defined $cd{'rfc2822'}) {
3382                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3383         }
3384
3385         # use per project git URL list in $projectroot/$project/cloneurl
3386         # or make project git URL from git base URL and project name
3387         my $url_tag = "URL";
3388         my @url_list = git_get_project_url_list($project);
3389         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3390         foreach my $git_url (@url_list) {
3391                 next unless $git_url;
3392                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3393                 $url_tag = "";
3394         }
3395         print "</table>\n";
3396
3397         if (-s "$projectroot/$project/README.html") {
3398                 if (open my $fd, "$projectroot/$project/README.html") {
3399                         print "<div class=\"title\">readme</div>\n";
3400                         print $_ while (<$fd>);
3401                         close $fd;
3402                 }
3403         }
3404
3405         # we need to request one more than 16 (0..15) to check if
3406         # those 16 are all
3407         my @commitlist = $head ? parse_commits($head, 17) : ();
3408         if (@commitlist) {
3409                 git_print_header_div('shortlog');
3410                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3411                                   $#commitlist <=  15 ? undef :
3412                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3413         }
3414
3415         if (@taglist) {
3416                 git_print_header_div('tags');
3417                 git_tags_body(\@taglist, 0, 15,
3418                               $#taglist <=  15 ? undef :
3419                               $cgi->a({-href => href(action=>"tags")}, "..."));
3420         }
3421
3422         if (@headlist) {
3423                 git_print_header_div('heads');
3424                 git_heads_body(\@headlist, $head, 0, 15,
3425                                $#headlist <= 15 ? undef :
3426                                $cgi->a({-href => href(action=>"heads")}, "..."));
3427         }
3428
3429         if (@forklist) {
3430                 git_print_header_div('forks');
3431                 git_project_list_body(\@forklist, undef, 0, 15,
3432                                       $#forklist <= 15 ? undef :
3433                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3434                                       'noheader');
3435         }
3436
3437         git_footer_html();
3438 }
3439
3440 sub git_tag {
3441         my $head = git_get_head_hash($project);
3442         git_header_html();
3443         git_print_page_nav('','', $head,undef,$head);
3444         my %tag = parse_tag($hash);
3445
3446         if (! %tag) {
3447                 die_error(undef, "Unknown tag object");
3448         }
3449
3450         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3451         print "<div class=\"title_text\">\n" .
3452               "<table cellspacing=\"0\">\n" .
3453               "<tr>\n" .
3454               "<td>object</td>\n" .
3455               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3456                                $tag{'object'}) . "</td>\n" .
3457               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3458                                               $tag{'type'}) . "</td>\n" .
3459               "</tr>\n";
3460         if (defined($tag{'author'})) {
3461                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3462                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3463                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3464                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3465                         "</td></tr>\n";
3466         }
3467         print "</table>\n\n" .
3468               "</div>\n";
3469         print "<div class=\"page_body\">";
3470         my $comment = $tag{'comment'};
3471         foreach my $line (@$comment) {
3472                 chomp $line;
3473                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3474         }
3475         print "</div>\n";
3476         git_footer_html();
3477 }
3478
3479 sub git_blame2 {
3480         my $fd;
3481         my $ftype;
3482
3483         my ($have_blame) = gitweb_check_feature('blame');
3484         if (!$have_blame) {
3485                 die_error('403 Permission denied', "Permission denied");
3486         }
3487         die_error('404 Not Found', "File name not defined") if (!$file_name);
3488         $hash_base ||= git_get_head_hash($project);
3489         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3490         my %co = parse_commit($hash_base)
3491                 or die_error(undef, "Reading commit failed");
3492         if (!defined $hash) {
3493                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3494                         or die_error(undef, "Error looking up file");
3495         }
3496         $ftype = git_get_type($hash);
3497         if ($ftype !~ "blob") {
3498                 die_error('400 Bad Request', "Object is not a blob");
3499         }
3500         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3501               $file_name, $hash_base)
3502                 or die_error(undef, "Open git-blame failed");
3503         git_header_html();
3504         my $formats_nav =
3505                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3506                         "blob") .
3507                 " | " .
3508                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3509                         "history") .
3510                 " | " .
3511                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3512                         "HEAD");
3513         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3514         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3515         git_print_page_path($file_name, $ftype, $hash_base);
3516         my @rev_color = (qw(light2 dark2));
3517         my $num_colors = scalar(@rev_color);
3518         my $current_color = 0;
3519         my $last_rev;
3520         print <<HTML;
3521 <div class="page_body">
3522 <table class="blame">
3523 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3524 HTML
3525         my %metainfo = ();
3526         while (1) {
3527                 $_ = <$fd>;
3528                 last unless defined $_;
3529                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3530                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3531                 if (!exists $metainfo{$full_rev}) {
3532                         $metainfo{$full_rev} = {};
3533                 }
3534                 my $meta = $metainfo{$full_rev};
3535                 while (<$fd>) {
3536                         last if (s/^\t//);
3537                         if (/^(\S+) (.*)$/) {
3538                                 $meta->{$1} = $2;
3539                         }
3540                 }
3541                 my $data = $_;
3542                 chomp $data;
3543                 my $rev = substr($full_rev, 0, 8);
3544                 my $author = $meta->{'author'};
3545                 my %date = parse_date($meta->{'author-time'},
3546                                       $meta->{'author-tz'});
3547                 my $date = $date{'iso-tz'};
3548                 if ($group_size) {
3549                         $current_color = ++$current_color % $num_colors;
3550                 }
3551                 print "<tr class=\"$rev_color[$current_color]\">\n";
3552                 if ($group_size) {
3553                         print "<td class=\"sha1\"";
3554                         print " title=\"". esc_html($author) . ", $date\"";
3555                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3556                         print ">";
3557                         print $cgi->a({-href => href(action=>"commit",
3558                                                      hash=>$full_rev,
3559                                                      file_name=>$file_name)},
3560                                       esc_html($rev));
3561                         print "</td>\n";
3562                 }
3563                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3564                         or die_error(undef, "Open git-rev-parse failed");
3565                 my $parent_commit = <$dd>;
3566                 close $dd;
3567                 chomp($parent_commit);
3568                 my $blamed = href(action => 'blame',
3569                                   file_name => $meta->{'filename'},
3570                                   hash_base => $parent_commit);
3571                 print "<td class=\"linenr\">";
3572                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3573                                 -id => "l$lineno",
3574                                 -class => "linenr" },
3575                               esc_html($lineno));
3576                 print "</td>";
3577                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3578                 print "</tr>\n";
3579         }
3580         print "</table>\n";
3581         print "</div>";
3582         close $fd
3583                 or print "Reading blob failed\n";
3584         git_footer_html();
3585 }
3586
3587 sub git_blame {
3588         my $fd;
3589
3590         my ($have_blame) = gitweb_check_feature('blame');
3591         if (!$have_blame) {
3592                 die_error('403 Permission denied', "Permission denied");
3593         }
3594         die_error('404 Not Found', "File name not defined") if (!$file_name);
3595         $hash_base ||= git_get_head_hash($project);
3596         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3597         my %co = parse_commit($hash_base)
3598                 or die_error(undef, "Reading commit failed");
3599         if (!defined $hash) {
3600                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3601                         or die_error(undef, "Error lookup file");
3602         }
3603         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3604                 or die_error(undef, "Open git-annotate failed");
3605         git_header_html();
3606         my $formats_nav =
3607                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3608                         "blob") .
3609                 " | " .
3610                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3611                         "history") .
3612                 " | " .
3613                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3614                         "HEAD");
3615         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3616         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3617         git_print_page_path($file_name, 'blob', $hash_base);
3618         print "<div class=\"page_body\">\n";
3619         print <<HTML;
3620 <table class="blame">
3621   <tr>
3622     <th>Commit</th>
3623     <th>Age</th>
3624     <th>Author</th>
3625     <th>Line</th>
3626     <th>Data</th>
3627   </tr>
3628 HTML
3629         my @line_class = (qw(light dark));
3630         my $line_class_len = scalar (@line_class);
3631         my $line_class_num = $#line_class;
3632         while (my $line = <$fd>) {
3633                 my $long_rev;
3634                 my $short_rev;
3635                 my $author;
3636                 my $time;
3637                 my $lineno;
3638                 my $data;
3639                 my $age;
3640                 my $age_str;
3641                 my $age_class;
3642
3643                 chomp $line;
3644                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3645
3646                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3647                         $long_rev = $1;
3648                         $author   = $2;
3649                         $time     = $3;
3650                         $lineno   = $4;
3651                         $data     = $5;
3652                 } else {
3653                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3654                         next;
3655                 }
3656                 $short_rev  = substr ($long_rev, 0, 8);
3657                 $age        = time () - $time;
3658                 $age_str    = age_string ($age);
3659                 $age_str    =~ s/ /&nbsp;/g;
3660                 $age_class  = age_class($age);
3661                 $author     = esc_html ($author);
3662                 $author     =~ s/ /&nbsp;/g;
3663
3664                 $data = untabify($data);
3665                 $data = esc_html ($data);
3666
3667                 print <<HTML;
3668   <tr class="$line_class[$line_class_num]">
3669     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3670     <td class="$age_class">$age_str</td>
3671     <td>$author</td>
3672     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3673     <td class="pre">$data</td>
3674   </tr>
3675 HTML
3676         } # while (my $line = <$fd>)
3677         print "</table>\n\n";
3678         close $fd
3679                 or print "Reading blob failed.\n";
3680         print "</div>";
3681         git_footer_html();
3682 }
3683
3684 sub git_tags {
3685         my $head = git_get_head_hash($project);
3686         git_header_html();
3687         git_print_page_nav('','', $head,undef,$head);
3688         git_print_header_div('summary', $project);
3689
3690         my @tagslist = git_get_tags_list();
3691         if (@tagslist) {
3692                 git_tags_body(\@tagslist);
3693         }
3694         git_footer_html();
3695 }
3696
3697 sub git_heads {
3698         my $head = git_get_head_hash($project);
3699         git_header_html();
3700         git_print_page_nav('','', $head,undef,$head);
3701         git_print_header_div('summary', $project);
3702
3703         my @headslist = git_get_heads_list();
3704         if (@headslist) {
3705                 git_heads_body(\@headslist, $head);
3706         }
3707         git_footer_html();
3708 }
3709
3710 sub git_blob_plain {
3711         my $expires;
3712
3713         if (!defined $hash) {
3714                 if (defined $file_name) {
3715                         my $base = $hash_base || git_get_head_hash($project);
3716                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3717                                 or die_error(undef, "Error lookup file");
3718                 } else {
3719                         die_error(undef, "No file name defined");
3720                 }
3721         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3722                 # blobs defined by non-textual hash id's can be cached
3723                 $expires = "+1d";
3724         }
3725
3726         my $type = shift;
3727         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3728                 or die_error(undef, "Couldn't cat $file_name, $hash");
3729
3730         $type ||= blob_mimetype($fd, $file_name);
3731
3732         # save as filename, even when no $file_name is given
3733         my $save_as = "$hash";
3734         if (defined $file_name) {
3735                 $save_as = $file_name;
3736         } elsif ($type =~ m/^text\//) {
3737                 $save_as .= '.txt';
3738         }
3739
3740         print $cgi->header(
3741                 -type => "$type",
3742                 -expires=>$expires,
3743                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3744         undef $/;
3745         binmode STDOUT, ':raw';
3746         print <$fd>;
3747         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3748         $/ = "\n";
3749         close $fd;
3750 }
3751
3752 sub git_blob {
3753         my $expires;
3754
3755         if (!defined $hash) {
3756                 if (defined $file_name) {
3757                         my $base = $hash_base || git_get_head_hash($project);
3758                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3759                                 or die_error(undef, "Error lookup file");
3760                 } else {
3761                         die_error(undef, "No file name defined");
3762                 }
3763         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3764                 # blobs defined by non-textual hash id's can be cached
3765                 $expires = "+1d";
3766         }
3767
3768         my ($have_blame) = gitweb_check_feature('blame');
3769         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3770                 or die_error(undef, "Couldn't cat $file_name, $hash");
3771         my $mimetype = blob_mimetype($fd, $file_name);
3772         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3773                 close $fd;
3774                 return git_blob_plain($mimetype);
3775         }
3776         # we can have blame only for text/* mimetype
3777         $have_blame &&= ($mimetype =~ m!^text/!);
3778
3779         git_header_html(undef, $expires);
3780         my $formats_nav = '';
3781         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3782                 if (defined $file_name) {
3783                         if ($have_blame) {
3784                                 $formats_nav .=
3785                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3786                                                                hash=>$hash, file_name=>$file_name)},
3787                                                 "blame") .
3788                                         " | ";
3789                         }
3790                         $formats_nav .=
3791                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3792                                                        hash=>$hash, file_name=>$file_name)},
3793                                         "history") .
3794                                 " | " .
3795                                 $cgi->a({-href => href(action=>"blob_plain",
3796                                                        hash=>$hash, file_name=>$file_name)},
3797                                         "raw") .
3798                                 " | " .
3799                                 $cgi->a({-href => href(action=>"blob",
3800                                                        hash_base=>"HEAD", file_name=>$file_name)},
3801                                         "HEAD");
3802                 } else {
3803                         $formats_nav .=
3804                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3805                 }
3806                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3807                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3808         } else {
3809                 print "<div class=\"page_nav\">\n" .
3810                       "<br/><br/></div>\n" .
3811                       "<div class=\"title\">$hash</div>\n";
3812         }
3813         git_print_page_path($file_name, "blob", $hash_base);
3814         print "<div class=\"page_body\">\n";
3815         if ($mimetype =~ m!^text/!) {
3816                 my $nr;
3817                 while (my $line = <$fd>) {
3818                         chomp $line;
3819                         $nr++;
3820                         $line = untabify($line);
3821                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3822                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3823                 }
3824         } elsif ($mimetype =~ m!^image/!) {
3825                 print qq!<img type="$mimetype"!;
3826                 if ($file_name) {
3827                         print qq! alt="$file_name" title="$file_name"!;
3828                 }
3829                 print qq! src="! .
3830                       href(action=>"blob_plain", hash=>$hash,
3831                            hash_base=>$hash_base, file_name=>$file_name) .
3832                       qq!" />\n!;
3833         }
3834         close $fd
3835                 or print "Reading blob failed.\n";
3836         print "</div>";
3837         git_footer_html();
3838 }
3839
3840 sub git_tree {
3841         my $have_snapshot = gitweb_have_snapshot();
3842
3843         if (!defined $hash_base) {
3844                 $hash_base = "HEAD";
3845         }
3846         if (!defined $hash) {
3847                 if (defined $file_name) {
3848                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3849                 } else {
3850                         $hash = $hash_base;
3851                 }
3852         }
3853         $/ = "\0";
3854         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3855                 or die_error(undef, "Open git-ls-tree failed");
3856         my @entries = map { chomp; $_ } <$fd>;
3857         close $fd or die_error(undef, "Reading tree failed");
3858         $/ = "\n";
3859
3860         my $refs = git_get_references();
3861         my $ref = format_ref_marker($refs, $hash_base);
3862         git_header_html();
3863         my $basedir = '';
3864         my ($have_blame) = gitweb_check_feature('blame');
3865         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3866                 my @views_nav = ();
3867                 if (defined $file_name) {
3868                         push @views_nav,
3869                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3870                                                        hash=>$hash, file_name=>$file_name)},
3871                                         "history"),
3872                                 $cgi->a({-href => href(action=>"tree",
3873                                                        hash_base=>"HEAD", file_name=>$file_name)},
3874                                         "HEAD"),
3875                 }
3876                 if ($have_snapshot) {
3877                         # FIXME: Should be available when we have no hash base as well.
3878                         push @views_nav,
3879                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3880                                         "snapshot");
3881                 }
3882                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3883                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3884         } else {
3885                 undef $hash_base;
3886                 print "<div class=\"page_nav\">\n";
3887                 print "<br/><br/></div>\n";
3888                 print "<div class=\"title\">$hash</div>\n";
3889         }
3890         if (defined $file_name) {
3891                 $basedir = $file_name;
3892                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3893                         $basedir .= '/';
3894                 }
3895         }
3896         git_print_page_path($file_name, 'tree', $hash_base);
3897         print "<div class=\"page_body\">\n";
3898         print "<table cellspacing=\"0\">\n";
3899         my $alternate = 1;
3900         # '..' (top directory) link if possible
3901         if (defined $hash_base &&
3902             defined $file_name && $file_name =~ m![^/]+$!) {
3903                 if ($alternate) {
3904                         print "<tr class=\"dark\">\n";
3905                 } else {
3906                         print "<tr class=\"light\">\n";
3907                 }
3908                 $alternate ^= 1;
3909
3910                 my $up = $file_name;
3911                 $up =~ s!/?[^/]+$!!;
3912                 undef $up unless $up;
3913                 # based on git_print_tree_entry
3914                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3915                 print '<td class="list">';
3916                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3917                                              file_name=>$up)},
3918                               "..");
3919                 print "</td>\n";
3920                 print "<td class=\"link\"></td>\n";
3921
3922                 print "</tr>\n";
3923         }
3924         foreach my $line (@entries) {
3925                 my %t = parse_ls_tree_line($line, -z => 1);
3926
3927                 if ($alternate) {
3928                         print "<tr class=\"dark\">\n";
3929                 } else {
3930                         print "<tr class=\"light\">\n";
3931                 }
3932                 $alternate ^= 1;
3933
3934                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3935
3936                 print "</tr>\n";
3937         }
3938         print "</table>\n" .
3939               "</div>";
3940         git_footer_html();
3941 }
3942
3943 sub git_snapshot {
3944         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3945         my $have_snapshot = (defined $ctype && defined $suffix);
3946         if (!$have_snapshot) {
3947                 die_error('403 Permission denied', "Permission denied");
3948         }
3949
3950         if (!defined $hash) {
3951                 $hash = git_get_head_hash($project);
3952         }
3953
3954         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3955
3956         print $cgi->header(
3957                 -type => "application/$ctype",
3958                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3959                 -status => '200 OK');
3960
3961         my $git = git_cmd_str();
3962         my $name = $project;
3963         $name =~ s/\047/\047\\\047\047/g;
3964         open my $fd, "-|",
3965                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3966                 or die_error(undef, "Execute git-tar-tree failed");
3967         binmode STDOUT, ':raw';
3968         print <$fd>;
3969         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3970         close $fd;
3971
3972 }
3973
3974 sub git_log {
3975         my $head = git_get_head_hash($project);
3976         if (!defined $hash) {
3977                 $hash = $head;
3978         }
3979         if (!defined $page) {
3980                 $page = 0;
3981         }
3982         my $refs = git_get_references();
3983
3984         my @commitlist = parse_commits($hash, 101, (100 * $page));
3985
3986         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3987
3988         git_header_html();
3989         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3990
3991         if (!@commitlist) {
3992                 my %co = parse_commit($hash);
3993
3994                 git_print_header_div('summary', $project);
3995                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3996         }
3997         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3998         for (my $i = 0; $i <= $to; $i++) {
3999                 my %co = %{$commitlist[$i]};
4000                 next if !%co;
4001                 my $commit = $co{'id'};
4002                 my $ref = format_ref_marker($refs, $commit);
4003                 my %ad = parse_date($co{'author_epoch'});
4004                 git_print_header_div('commit',
4005                                "<span class=\"age\">$co{'age_string'}</span>" .
4006                                esc_html($co{'title'}) . $ref,
4007                                $commit);
4008                 print "<div class=\"title_text\">\n" .
4009                       "<div class=\"log_link\">\n" .
4010                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4011                       " | " .
4012                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4013                       " | " .
4014                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4015                       "<br/>\n" .
4016                       "</div>\n" .
4017                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4018                       "</div>\n";
4019
4020                 print "<div class=\"log_body\">\n";
4021                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4022                 print "</div>\n";
4023         }
4024         if ($#commitlist >= 100) {
4025                 print "<div class=\"page_nav\">\n";
4026                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4027                                -accesskey => "n", -title => "Alt-n"}, "next");
4028                 print "</div>\n";
4029         }
4030         git_footer_html();
4031 }
4032
4033 sub git_commit {
4034         $hash ||= $hash_base || "HEAD";
4035         my %co = parse_commit($hash);
4036         if (!%co) {
4037                 die_error(undef, "Unknown commit object");
4038         }
4039         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4040         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4041
4042         my $parent  = $co{'parent'};
4043         my $parents = $co{'parents'}; # listref
4044
4045         # we need to prepare $formats_nav before any parameter munging
4046         my $formats_nav;
4047         if (!defined $parent) {
4048                 # --root commitdiff
4049                 $formats_nav .= '(initial)';
4050         } elsif (@$parents == 1) {
4051                 # single parent commit
4052                 $formats_nav .=
4053                         '(parent: ' .
4054                         $cgi->a({-href => href(action=>"commit",
4055                                                hash=>$parent)},
4056                                 esc_html(substr($parent, 0, 7))) .
4057                         ')';
4058         } else {
4059                 # merge commit
4060                 $formats_nav .=
4061                         '(merge: ' .
4062                         join(' ', map {
4063                                 $cgi->a({-href => href(action=>"commit",
4064                                                        hash=>$_)},
4065                                         esc_html(substr($_, 0, 7)));
4066                         } @$parents ) .
4067                         ')';
4068         }
4069
4070         if (!defined $parent) {
4071                 $parent = "--root";
4072         }
4073         my @difftree;
4074         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4075                 @diff_opts,
4076                 (@$parents <= 1 ? $parent : '-c'),
4077                 $hash, "--"
4078                 or die_error(undef, "Open git-diff-tree failed");
4079         @difftree = map { chomp; $_ } <$fd>;
4080         close $fd or die_error(undef, "Reading git-diff-tree failed");
4081
4082         # non-textual hash id's can be cached
4083         my $expires;
4084         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4085                 $expires = "+1d";
4086         }
4087         my $refs = git_get_references();
4088         my $ref = format_ref_marker($refs, $co{'id'});
4089
4090         my $have_snapshot = gitweb_have_snapshot();
4091
4092         git_header_html(undef, $expires);
4093         git_print_page_nav('commit', '',
4094                            $hash, $co{'tree'}, $hash,
4095                            $formats_nav);
4096
4097         if (defined $co{'parent'}) {
4098                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4099         } else {
4100                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4101         }
4102         print "<div class=\"title_text\">\n" .
4103               "<table cellspacing=\"0\">\n";
4104         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4105               "<tr>" .
4106               "<td></td><td> $ad{'rfc2822'}";
4107         if ($ad{'hour_local'} < 6) {
4108                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4109                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4110         } else {
4111                 printf(" (%02d:%02d %s)",
4112                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4113         }
4114         print "</td>" .
4115               "</tr>\n";
4116         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4117         print "<tr><td></td><td> $cd{'rfc2822'}" .
4118               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4119               "</td></tr>\n";
4120         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4121         print "<tr>" .
4122               "<td>tree</td>" .
4123               "<td class=\"sha1\">" .
4124               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4125                        class => "list"}, $co{'tree'}) .
4126               "</td>" .
4127               "<td class=\"link\">" .
4128               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4129                       "tree");
4130         if ($have_snapshot) {
4131                 print " | " .
4132                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4133         }
4134         print "</td>" .
4135               "</tr>\n";
4136
4137         foreach my $par (@$parents) {
4138                 print "<tr>" .
4139                       "<td>parent</td>" .
4140                       "<td class=\"sha1\">" .
4141                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4142                                class => "list"}, $par) .
4143                       "</td>" .
4144                       "<td class=\"link\">" .
4145                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4146                       " | " .
4147                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4148                       "</td>" .
4149                       "</tr>\n";
4150         }
4151         print "</table>".
4152               "</div>\n";
4153
4154         print "<div class=\"page_body\">\n";
4155         git_print_log($co{'comment'});
4156         print "</div>\n";
4157
4158         git_difftree_body(\@difftree, $hash, @$parents);
4159
4160         git_footer_html();
4161 }
4162
4163 sub git_object {
4164         # object is defined by:
4165         # - hash or hash_base alone
4166         # - hash_base and file_name
4167         my $type;
4168
4169         # - hash or hash_base alone
4170         if ($hash || ($hash_base && !defined $file_name)) {
4171                 my $object_id = $hash || $hash_base;
4172
4173                 my $git_command = git_cmd_str();
4174                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4175                         or die_error('404 Not Found', "Object does not exist");
4176                 $type = <$fd>;
4177                 chomp $type;
4178                 close $fd
4179                         or die_error('404 Not Found', "Object does not exist");
4180
4181         # - hash_base and file_name
4182         } elsif ($hash_base && defined $file_name) {
4183                 $file_name =~ s,/+$,,;
4184
4185                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4186                         or die_error('404 Not Found', "Base object does not exist");
4187
4188                 # here errors should not hapen
4189                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4190                         or die_error(undef, "Open git-ls-tree failed");
4191                 my $line = <$fd>;
4192                 close $fd;
4193
4194                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4195                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4196                         die_error('404 Not Found', "File or directory for given base does not exist");
4197                 }
4198                 $type = $2;
4199                 $hash = $3;
4200         } else {
4201                 die_error('404 Not Found', "Not enough information to find object");
4202         }
4203
4204         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4205                                           hash=>$hash, hash_base=>$hash_base,
4206                                           file_name=>$file_name),
4207                              -status => '302 Found');
4208 }
4209
4210 sub git_blobdiff {
4211         my $format = shift || 'html';
4212
4213         my $fd;
4214         my @difftree;
4215         my %diffinfo;
4216         my $expires;
4217
4218         # preparing $fd and %diffinfo for git_patchset_body
4219         # new style URI
4220         if (defined $hash_base && defined $hash_parent_base) {
4221                 if (defined $file_name) {
4222                         # read raw output
4223                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4224                                 $hash_parent_base, $hash_base,
4225                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4226                                 or die_error(undef, "Open git-diff-tree failed");
4227                         @difftree = map { chomp; $_ } <$fd>;
4228                         close $fd
4229                                 or die_error(undef, "Reading git-diff-tree failed");
4230                         @difftree
4231                                 or die_error('404 Not Found', "Blob diff not found");
4232
4233                 } elsif (defined $hash &&
4234                          $hash =~ /[0-9a-fA-F]{40}/) {
4235                         # try to find filename from $hash
4236
4237                         # read filtered raw output
4238                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4239                                 $hash_parent_base, $hash_base, "--"
4240                                 or die_error(undef, "Open git-diff-tree failed");
4241                         @difftree =
4242                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4243                                 # $hash == to_id
4244                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4245                                 map { chomp; $_ } <$fd>;
4246                         close $fd
4247                                 or die_error(undef, "Reading git-diff-tree failed");
4248                         @difftree
4249                                 or die_error('404 Not Found', "Blob diff not found");
4250
4251                 } else {
4252                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4253                 }
4254
4255                 if (@difftree > 1) {
4256                         die_error('404 Not Found', "Ambiguous blob diff specification");
4257                 }
4258
4259                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4260                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4261                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4262
4263                 $hash_parent ||= $diffinfo{'from_id'};
4264                 $hash        ||= $diffinfo{'to_id'};
4265
4266                 # non-textual hash id's can be cached
4267                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4268                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4269                         $expires = '+1d';
4270                 }
4271
4272                 # open patch output
4273                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4274                         '-p', ($format eq 'html' ? "--full-index" : ()),
4275                         $hash_parent_base, $hash_base,
4276                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4277                         or die_error(undef, "Open git-diff-tree failed");
4278         }
4279
4280         # old/legacy style URI
4281         if (!%diffinfo && # if new style URI failed
4282             defined $hash && defined $hash_parent) {
4283                 # fake git-diff-tree raw output
4284                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4285                 $diffinfo{'from_id'} = $hash_parent;
4286                 $diffinfo{'to_id'}   = $hash;
4287                 if (defined $file_name) {
4288                         if (defined $file_parent) {
4289                                 $diffinfo{'status'} = '2';
4290                                 $diffinfo{'from_file'} = $file_parent;
4291                                 $diffinfo{'to_file'}   = $file_name;
4292                         } else { # assume not renamed
4293                                 $diffinfo{'status'} = '1';
4294                                 $diffinfo{'from_file'} = $file_name;
4295                                 $diffinfo{'to_file'}   = $file_name;
4296                         }
4297                 } else { # no filename given
4298                         $diffinfo{'status'} = '2';
4299                         $diffinfo{'from_file'} = $hash_parent;
4300                         $diffinfo{'to_file'}   = $hash;
4301                 }
4302
4303                 # non-textual hash id's can be cached
4304                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4305                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4306                         $expires = '+1d';
4307                 }
4308
4309                 # open patch output
4310                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4311                         '-p', ($format eq 'html' ? "--full-index" : ()),
4312                         $hash_parent, $hash, "--"
4313                         or die_error(undef, "Open git-diff failed");
4314         } else  {
4315                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4316                         unless %diffinfo;
4317         }
4318
4319         # header
4320         if ($format eq 'html') {
4321                 my $formats_nav =
4322                         $cgi->a({-href => href(action=>"blobdiff_plain",
4323                                                hash=>$hash, hash_parent=>$hash_parent,
4324                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4325                                                file_name=>$file_name, file_parent=>$file_parent)},
4326                                 "raw");
4327                 git_header_html(undef, $expires);
4328                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4329                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4330                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4331                 } else {
4332                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4333                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4334                 }
4335                 if (defined $file_name) {
4336                         git_print_page_path($file_name, "blob", $hash_base);
4337                 } else {
4338                         print "<div class=\"page_path\"></div>\n";
4339                 }
4340
4341         } elsif ($format eq 'plain') {
4342                 print $cgi->header(
4343                         -type => 'text/plain',
4344                         -charset => 'utf-8',
4345                         -expires => $expires,
4346                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4347
4348                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4349
4350         } else {
4351                 die_error(undef, "Unknown blobdiff format");
4352         }
4353
4354         # patch
4355         if ($format eq 'html') {
4356                 print "<div class=\"page_body\">\n";
4357
4358                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4359                 close $fd;
4360
4361                 print "</div>\n"; # class="page_body"
4362                 git_footer_html();
4363
4364         } else {
4365                 while (my $line = <$fd>) {
4366                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4367                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4368
4369                         print $line;
4370
4371                         last if $line =~ m!^\+\+\+!;
4372                 }
4373                 local $/ = undef;
4374                 print <$fd>;
4375                 close $fd;
4376         }
4377 }
4378
4379 sub git_blobdiff_plain {
4380         git_blobdiff('plain');
4381 }
4382
4383 sub git_commitdiff {
4384         my $format = shift || 'html';
4385         $hash ||= $hash_base || "HEAD";
4386         my %co = parse_commit($hash);
4387         if (!%co) {
4388                 die_error(undef, "Unknown commit object");
4389         }
4390
4391         # we need to prepare $formats_nav before any parameter munging
4392         my $formats_nav;
4393         if ($format eq 'html') {
4394                 $formats_nav =
4395                         $cgi->a({-href => href(action=>"commitdiff_plain",
4396                                                hash=>$hash, hash_parent=>$hash_parent)},
4397                                 "raw");
4398
4399                 if (defined $hash_parent) {
4400                         # commitdiff with two commits given
4401                         my $hash_parent_short = $hash_parent;
4402                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4403                                 $hash_parent_short = substr($hash_parent, 0, 7);
4404                         }
4405                         $formats_nav .=
4406                                 ' (from: ' .
4407                                 $cgi->a({-href => href(action=>"commitdiff",
4408                                                        hash=>$hash_parent)},
4409                                         esc_html($hash_parent_short)) .
4410                                 ')';
4411                 } elsif (!$co{'parent'}) {
4412                         # --root commitdiff
4413                         $formats_nav .= ' (initial)';
4414                 } elsif (scalar @{$co{'parents'}} == 1) {
4415                         # single parent commit
4416                         $formats_nav .=
4417                                 ' (parent: ' .
4418                                 $cgi->a({-href => href(action=>"commitdiff",
4419                                                        hash=>$co{'parent'})},
4420                                         esc_html(substr($co{'parent'}, 0, 7))) .
4421                                 ')';
4422                 } else {
4423                         # merge commit
4424                         $formats_nav .=
4425                                 ' (merge: ' .
4426                                 join(' ', map {
4427                                         $cgi->a({-href => href(action=>"commitdiff",
4428                                                                hash=>$_)},
4429                                                 esc_html(substr($_, 0, 7)));
4430                                 } @{$co{'parents'}} ) .
4431                                 ')';
4432                 }
4433         }
4434
4435         my $hash_parent_param = $hash_parent;
4436         if (!defined $hash_parent) {
4437                 $hash_parent_param =
4438                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4439         }
4440
4441         # read commitdiff
4442         my $fd;
4443         my @difftree;
4444         if ($format eq 'html') {
4445                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4446                         "--no-commit-id", "--patch-with-raw", "--full-index",
4447                         $hash_parent_param, $hash, "--"
4448                         or die_error(undef, "Open git-diff-tree failed");
4449
4450                 while (my $line = <$fd>) {
4451                         chomp $line;
4452                         # empty line ends raw part of diff-tree output
4453                         last unless $line;
4454                         push @difftree, scalar parse_difftree_raw_line($line);
4455                 }
4456
4457         } elsif ($format eq 'plain') {
4458                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4459                         '-p', $hash_parent_param, $hash, "--"
4460                         or die_error(undef, "Open git-diff-tree failed");
4461
4462         } else {
4463                 die_error(undef, "Unknown commitdiff format");
4464         }
4465
4466         # non-textual hash id's can be cached
4467         my $expires;
4468         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4469                 $expires = "+1d";
4470         }
4471
4472         # write commit message
4473         if ($format eq 'html') {
4474                 my $refs = git_get_references();
4475                 my $ref = format_ref_marker($refs, $co{'id'});
4476
4477                 git_header_html(undef, $expires);
4478                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4479                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4480                 git_print_authorship(\%co);
4481                 print "<div class=\"page_body\">\n";
4482                 if (@{$co{'comment'}} > 1) {
4483                         print "<div class=\"log\">\n";
4484                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4485                         print "</div>\n"; # class="log"
4486                 }
4487
4488         } elsif ($format eq 'plain') {
4489                 my $refs = git_get_references("tags");
4490                 my $tagname = git_get_rev_name_tags($hash);
4491                 my $filename = basename($project) . "-$hash.patch";
4492
4493                 print $cgi->header(
4494                         -type => 'text/plain',
4495                         -charset => 'utf-8',
4496                         -expires => $expires,
4497                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4498                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4499                 print <<TEXT;
4500 From: $co{'author'}
4501 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4502 Subject: $co{'title'}
4503 TEXT
4504                 print "X-Git-Tag: $tagname\n" if $tagname;
4505                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4506
4507                 foreach my $line (@{$co{'comment'}}) {
4508                         print "$line\n";
4509                 }
4510                 print "---\n\n";
4511         }
4512
4513         # write patch
4514         if ($format eq 'html') {
4515                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4516                 print "<br/>\n";
4517
4518                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4519                 close $fd;
4520                 print "</div>\n"; # class="page_body"
4521                 git_footer_html();
4522
4523         } elsif ($format eq 'plain') {
4524                 local $/ = undef;
4525                 print <$fd>;
4526                 close $fd
4527                         or print "Reading git-diff-tree failed\n";
4528         }
4529 }
4530
4531 sub git_commitdiff_plain {
4532         git_commitdiff('plain');
4533 }
4534
4535 sub git_history {
4536         if (!defined $hash_base) {
4537                 $hash_base = git_get_head_hash($project);
4538         }
4539         if (!defined $page) {
4540                 $page = 0;
4541         }
4542         my $ftype;
4543         my %co = parse_commit($hash_base);
4544         if (!%co) {
4545                 die_error(undef, "Unknown commit object");
4546         }
4547
4548         my $refs = git_get_references();
4549         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4550
4551         if (!defined $hash && defined $file_name) {
4552                 $hash = git_get_hash_by_path($hash_base, $file_name);
4553         }
4554         if (defined $hash) {
4555                 $ftype = git_get_type($hash);
4556         }
4557
4558         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4559
4560         my $paging_nav = '';
4561         if ($page > 0) {
4562                 $paging_nav .=
4563                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4564                                                file_name=>$file_name)},
4565                                 "first");
4566                 $paging_nav .= " &sdot; " .
4567                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4568                                                file_name=>$file_name, page=>$page-1),
4569                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4570         } else {
4571                 $paging_nav .= "first";
4572                 $paging_nav .= " &sdot; prev";
4573         }
4574         if ($#commitlist >= 100) {
4575                 $paging_nav .= " &sdot; " .
4576                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4577                                                file_name=>$file_name, page=>$page+1),
4578                                  -accesskey => "n", -title => "Alt-n"}, "next");
4579         } else {
4580                 $paging_nav .= " &sdot; next";
4581         }
4582         my $next_link = '';
4583         if ($#commitlist >= 100) {
4584                 $next_link =
4585                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4586                                                file_name=>$file_name, page=>$page+1),
4587                                  -accesskey => "n", -title => "Alt-n"}, "next");
4588         }
4589
4590         git_header_html();
4591         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4592         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4593         git_print_page_path($file_name, $ftype, $hash_base);
4594
4595         git_history_body(\@commitlist, 0, 99,
4596                          $refs, $hash_base, $ftype, $next_link);
4597
4598         git_footer_html();
4599 }
4600
4601 sub git_search {
4602         my ($have_search) = gitweb_check_feature('search');
4603         if (!$have_search) {
4604                 die_error('403 Permission denied', "Permission denied");
4605         }
4606         if (!defined $searchtext) {
4607                 die_error(undef, "Text field empty");
4608         }
4609         if (!defined $hash) {
4610                 $hash = git_get_head_hash($project);
4611         }
4612         my %co = parse_commit($hash);
4613         if (!%co) {
4614                 die_error(undef, "Unknown commit object");
4615         }
4616         if (!defined $page) {
4617                 $page = 0;
4618         }
4619
4620         $searchtype ||= 'commit';
4621         if ($searchtype eq 'pickaxe') {
4622                 # pickaxe may take all resources of your box and run for several minutes
4623                 # with every query - so decide by yourself how public you make this feature
4624                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4625                 if (!$have_pickaxe) {
4626                         die_error('403 Permission denied', "Permission denied");
4627                 }
4628         }
4629
4630         git_header_html();
4631
4632         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4633                 my $greptype;
4634                 if ($searchtype eq 'commit') {
4635                         $greptype = "--grep=";
4636                 } elsif ($searchtype eq 'author') {
4637                         $greptype = "--author=";
4638                 } elsif ($searchtype eq 'committer') {
4639                         $greptype = "--committer=";
4640                 }
4641                 $greptype .= $search_regexp;
4642                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4643
4644                 my $paging_nav = '';
4645                 if ($page > 0) {
4646                         $paging_nav .=
4647                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4648                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4649                                         "first");
4650                         $paging_nav .= " &sdot; " .
4651                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4652                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4653                                                        page=>$page-1),
4654                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4655                 } else {
4656                         $paging_nav .= "first";
4657                         $paging_nav .= " &sdot; prev";
4658                 }
4659                 if ($#commitlist >= 100) {
4660                         $paging_nav .= " &sdot; " .
4661                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4662                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4663                                                        page=>$page+1),
4664                                          -accesskey => "n", -title => "Alt-n"}, "next");
4665                 } else {
4666                         $paging_nav .= " &sdot; next";
4667                 }
4668                 my $next_link = '';
4669                 if ($#commitlist >= 100) {
4670                         $next_link =
4671                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4672                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4673                                                        page=>$page+1),
4674                                          -accesskey => "n", -title => "Alt-n"}, "next");
4675                 }
4676
4677                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4678                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4679                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4680         }
4681
4682         if ($searchtype eq 'pickaxe') {
4683                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4684                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4685
4686                 print "<table cellspacing=\"0\">\n";
4687                 my $alternate = 1;
4688                 $/ = "\n";
4689                 my $git_command = git_cmd_str();
4690                 open my $fd, "-|", "$git_command rev-list $hash | " .
4691                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4692                 undef %co;
4693                 my @files;
4694                 while (my $line = <$fd>) {
4695                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4696                                 my %set;
4697                                 $set{'file'} = $6;
4698                                 $set{'from_id'} = $3;
4699                                 $set{'to_id'} = $4;
4700                                 $set{'id'} = $set{'to_id'};
4701                                 if ($set{'id'} =~ m/0{40}/) {
4702                                         $set{'id'} = $set{'from_id'};
4703                                 }
4704                                 if ($set{'id'} =~ m/0{40}/) {
4705                                         next;
4706                                 }
4707                                 push @files, \%set;
4708                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4709                                 if (%co) {
4710                                         if ($alternate) {
4711                                                 print "<tr class=\"dark\">\n";
4712                                         } else {
4713                                                 print "<tr class=\"light\">\n";
4714                                         }
4715                                         $alternate ^= 1;
4716                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4717                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4718                                               "<td>" .
4719                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4720                                                       -class => "list subject"},
4721                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4722                                         while (my $setref = shift @files) {
4723                                                 my %set = %$setref;
4724                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4725                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4726                                                               -class => "list"},
4727                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4728                                                       "<br/>\n";
4729                                         }
4730                                         print "</td>\n" .
4731                                               "<td class=\"link\">" .
4732                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4733                                               " | " .
4734                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4735                                         print "</td>\n" .
4736                                               "</tr>\n";
4737                                 }
4738                                 %co = parse_commit($1);
4739                         }
4740                 }
4741                 close $fd;
4742
4743                 print "</table>\n";
4744         }
4745         git_footer_html();
4746 }
4747
4748 sub git_search_help {
4749         git_header_html();
4750         git_print_page_nav('','', $hash,$hash,$hash);
4751         print <<EOT;
4752 <dl>
4753 <dt><b>commit</b></dt>
4754 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4755 <dt><b>author</b></dt>
4756 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4757 <dt><b>committer</b></dt>
4758 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4759 EOT
4760         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4761         if ($have_pickaxe) {
4762                 print <<EOT;
4763 <dt><b>pickaxe</b></dt>
4764 <dd>All commits that caused the string to appear or disappear from any file (changes that
4765 added, removed or "modified" the string) will be listed. This search can take a while and
4766 takes a lot of strain on the server, so please use it wisely.</dd>
4767 EOT
4768         }
4769         print "</dl>\n";
4770         git_footer_html();
4771 }
4772
4773 sub git_shortlog {
4774         my $head = git_get_head_hash($project);
4775         if (!defined $hash) {
4776                 $hash = $head;
4777         }
4778         if (!defined $page) {
4779                 $page = 0;
4780         }
4781         my $refs = git_get_references();
4782
4783         my @commitlist = parse_commits($hash, 101, (100 * $page));
4784
4785         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4786         my $next_link = '';
4787         if ($#commitlist >= 100) {
4788                 $next_link =
4789                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4790                                  -accesskey => "n", -title => "Alt-n"}, "next");
4791         }
4792
4793         git_header_html();
4794         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4795         git_print_header_div('summary', $project);
4796
4797         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4798
4799         git_footer_html();
4800 }
4801
4802 ## ......................................................................
4803 ## feeds (RSS, Atom; OPML)
4804
4805 sub git_feed {
4806         my $format = shift || 'atom';
4807         my ($have_blame) = gitweb_check_feature('blame');
4808
4809         # Atom: http://www.atomenabled.org/developers/syndication/
4810         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4811         if ($format ne 'rss' && $format ne 'atom') {
4812                 die_error(undef, "Unknown web feed format");
4813         }
4814
4815         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4816         my $head = $hash || 'HEAD';
4817         my @commitlist = parse_commits($head, 150);
4818
4819         my %latest_commit;
4820         my %latest_date;
4821         my $content_type = "application/$format+xml";
4822         if (defined $cgi->http('HTTP_ACCEPT') &&
4823                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4824                 # browser (feed reader) prefers text/xml
4825                 $content_type = 'text/xml';
4826         }
4827         if (defined($commitlist[0])) {
4828                 %latest_commit = %{$commitlist[0]};
4829                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4830                 print $cgi->header(
4831                         -type => $content_type,
4832                         -charset => 'utf-8',
4833                         -last_modified => $latest_date{'rfc2822'});
4834         } else {
4835                 print $cgi->header(
4836                         -type => $content_type,
4837                         -charset => 'utf-8');
4838         }
4839
4840         # Optimization: skip generating the body if client asks only
4841         # for Last-Modified date.
4842         return if ($cgi->request_method() eq 'HEAD');
4843
4844         # header variables
4845         my $title = "$site_name - $project/$action";
4846         my $feed_type = 'log';
4847         if (defined $hash) {
4848                 $title .= " - '$hash'";
4849                 $feed_type = 'branch log';
4850                 if (defined $file_name) {
4851                         $title .= " :: $file_name";
4852                         $feed_type = 'history';
4853                 }
4854         } elsif (defined $file_name) {
4855                 $title .= " - $file_name";
4856                 $feed_type = 'history';
4857         }
4858         $title .= " $feed_type";
4859         my $descr = git_get_project_description($project);
4860         if (defined $descr) {
4861                 $descr = esc_html($descr);
4862         } else {
4863                 $descr = "$project " .
4864                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4865                          " feed";
4866         }
4867         my $owner = git_get_project_owner($project);
4868         $owner = esc_html($owner);
4869
4870         #header
4871         my $alt_url;
4872         if (defined $file_name) {
4873                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4874         } elsif (defined $hash) {
4875                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4876         } else {
4877                 $alt_url = href(-full=>1, action=>"summary");
4878         }
4879         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4880         if ($format eq 'rss') {
4881                 print <<XML;
4882 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4883 <channel>
4884 XML
4885                 print "<title>$title</title>\n" .
4886                       "<link>$alt_url</link>\n" .
4887                       "<description>$descr</description>\n" .
4888                       "<language>en</language>\n";
4889         } elsif ($format eq 'atom') {
4890                 print <<XML;
4891 <feed xmlns="http://www.w3.org/2005/Atom">
4892 XML
4893                 print "<title>$title</title>\n" .
4894                       "<subtitle>$descr</subtitle>\n" .
4895                       '<link rel="alternate" type="text/html" href="' .
4896                       $alt_url . '" />' . "\n" .
4897                       '<link rel="self" type="' . $content_type . '" href="' .
4898                       $cgi->self_url() . '" />' . "\n" .
4899                       "<id>" . href(-full=>1) . "</id>\n" .
4900                       # use project owner for feed author
4901                       "<author><name>$owner</name></author>\n";
4902                 if (defined $favicon) {
4903                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4904                 }
4905                 if (defined $logo_url) {
4906                         # not twice as wide as tall: 72 x 27 pixels
4907                         print "<logo>" . esc_url($logo) . "</logo>\n";
4908                 }
4909                 if (! %latest_date) {
4910                         # dummy date to keep the feed valid until commits trickle in:
4911                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4912                 } else {
4913                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4914                 }
4915         }
4916
4917         # contents
4918         for (my $i = 0; $i <= $#commitlist; $i++) {
4919                 my %co = %{$commitlist[$i]};
4920                 my $commit = $co{'id'};
4921                 # we read 150, we always show 30 and the ones more recent than 48 hours
4922                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4923                         last;
4924                 }
4925                 my %cd = parse_date($co{'author_epoch'});
4926
4927                 # get list of changed files
4928                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4929                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4930                         or next;
4931                 my @difftree = map { chomp; $_ } <$fd>;
4932                 close $fd
4933                         or next;
4934
4935                 # print element (entry, item)
4936                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4937                 if ($format eq 'rss') {
4938                         print "<item>\n" .
4939                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4940                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4941                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4942                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4943                               "<link>$co_url</link>\n" .
4944                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4945                               "<content:encoded>" .
4946                               "<![CDATA[\n";
4947                 } elsif ($format eq 'atom') {
4948                         print "<entry>\n" .
4949                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4950                               "<updated>$cd{'iso-8601'}</updated>\n" .
4951                               "<author>\n" .
4952                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4953                         if ($co{'author_email'}) {
4954                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4955                         }
4956                         print "</author>\n" .
4957                               # use committer for contributor
4958                               "<contributor>\n" .
4959                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4960                         if ($co{'committer_email'}) {
4961                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4962                         }
4963                         print "</contributor>\n" .
4964                               "<published>$cd{'iso-8601'}</published>\n" .
4965                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4966                               "<id>$co_url</id>\n" .
4967                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4968                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4969                 }
4970                 my $comment = $co{'comment'};
4971                 print "<pre>\n";
4972                 foreach my $line (@$comment) {
4973                         $line = esc_html($line);
4974                         print "$line\n";
4975                 }
4976                 print "</pre><ul>\n";
4977                 foreach my $difftree_line (@difftree) {
4978                         my %difftree = parse_difftree_raw_line($difftree_line);
4979                         next if !$difftree{'from_id'};
4980
4981                         my $file = $difftree{'file'} || $difftree{'to_file'};
4982
4983                         print "<li>" .
4984                               "[" .
4985                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4986                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4987                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4988                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4989                                       -title => "diff"}, 'D');
4990                         if ($have_blame) {
4991                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4992                                                              file_name=>$file, hash_base=>$commit),
4993                                               -title => "blame"}, 'B');
4994                         }
4995                         # if this is not a feed of a file history
4996                         if (!defined $file_name || $file_name ne $file) {
4997                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4998                                                              file_name=>$file, hash=>$commit),
4999                                               -title => "history"}, 'H');
5000                         }
5001                         $file = esc_path($file);
5002                         print "] ".
5003                               "$file</li>\n";
5004                 }
5005                 if ($format eq 'rss') {
5006                         print "</ul>]]>\n" .
5007                               "</content:encoded>\n" .
5008                               "</item>\n";
5009                 } elsif ($format eq 'atom') {
5010                         print "</ul>\n</div>\n" .
5011                               "</content>\n" .
5012                               "</entry>\n";
5013                 }
5014         }
5015
5016         # end of feed
5017         if ($format eq 'rss') {
5018                 print "</channel>\n</rss>\n";
5019         }       elsif ($format eq 'atom') {
5020                 print "</feed>\n";
5021         }
5022 }
5023
5024 sub git_rss {
5025         git_feed('rss');
5026 }
5027
5028 sub git_atom {
5029         git_feed('atom');
5030 }
5031
5032 sub git_opml {
5033         my @list = git_get_projects_list();
5034
5035         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5036         print <<XML;
5037 <?xml version="1.0" encoding="utf-8"?>
5038 <opml version="1.0">
5039 <head>
5040   <title>$site_name OPML Export</title>
5041 </head>
5042 <body>
5043 <outline text="git RSS feeds">
5044 XML
5045
5046         foreach my $pr (@list) {
5047                 my %proj = %$pr;
5048                 my $head = git_get_head_hash($proj{'path'});
5049                 if (!defined $head) {
5050                         next;
5051                 }
5052                 $git_dir = "$projectroot/$proj{'path'}";
5053                 my %co = parse_commit($head);
5054                 if (!%co) {
5055                         next;
5056                 }
5057
5058                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5059                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5060                 my $html = "$my_url?p=$proj{'path'};a=summary";
5061                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5062         }
5063         print <<XML;
5064 </outline>
5065 </body>
5066 </opml>
5067 XML
5068 }