git.oblomov.eu Git - git/blob - 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 # the width (in characters) of the projects list "Description" column
  75 our $projects_list_description_width = 25;
  76
  77 # default order of projects list
  78 # valid values are none, project, descr, owner, and age
  79 our $default_projects_order = "project";
  80
  81 # show repository only if this file exists
  82 # (only effective if this variable evaluates to true)
  83 our $export_ok = "++GITWEB_EXPORT_OK++";
  84
  85 # only allow viewing of repositories also shown on the overview page
  86 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  87
  88 # list of git base URLs used for URL to where fetch project from,
  89 # i.e. full URL is "$git_base_url/$project"
  90 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  91
  92 # default blob_plain mimetype and default charset for text/plain blob
  93 our $default_blob_plain_mimetype = 'text/plain';
  94 our $default_text_plain_charset  = undef;
  95
  96 # file to use for guessing MIME types before trying /etc/mime.types
  97 # (relative to the current git repository)
  98 our $mimetypes_file = undef;
  99
 100 # assume this charset if line contains non-UTF-8 characters;
 101 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 102 # for which encoding all byte sequences are valid, for example
 103 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 104 # could be even 'utf-8' for the old behavior)
 105 our $fallback_encoding = 'latin1';
 106
 107 # You define site-wide feature defaults here; override them with
 108 # $GITWEB_CONFIG as necessary.
 109 our %feature = (
 110         # feature => {
 111         #       'sub' => feature-sub (subroutine),
 112         #       'override' => allow-override (boolean),
 113         #       'default' => [ default options...] (array reference)}
 114         #
 115         # if feature is overridable (it means that allow-override has true value),
 116         # then feature-sub will be called with default options as parameters;
 117         # return value of feature-sub indicates if to enable specified feature
 118         #
 119         # if there is no 'sub' key (no feature-sub), then feature cannot be
 120         # overriden
 121         #
 122         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 123
 124         # Enable the 'blame' blob view, showing the last commit that modified
 125         # each line in the file. This can be very CPU-intensive.
 126
 127         # To enable system wide have in $GITWEB_CONFIG
 128         # $feature{'blame'}{'default'} = [1];
 129         # To have project specific config enable override in $GITWEB_CONFIG
 130         # $feature{'blame'}{'override'} = 1;
 131         # and in project config gitweb.blame = 0|1;
 132         'blame' => {
 133                 'sub' => \&feature_blame,
 134                 'override' => 0,
 135                 'default' => [0]},
 136
 137         # Enable the 'snapshot' link, providing a compressed tarball of any
 138         # tree. This can potentially generate high traffic if you have large
 139         # project.
 140
 141         # To disable system wide have in $GITWEB_CONFIG
 142         # $feature{'snapshot'}{'default'} = [undef];
 143         # To have project specific config enable override in $GITWEB_CONFIG
 144         # $feature{'snapshot'}{'override'} = 1;
 145         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 146         'snapshot' => {
 147                 'sub' => \&feature_snapshot,
 148                 'override' => 0,
 149                 #         => [content-encoding, suffix, program]
 150                 'default' => ['x-gzip', 'gz', 'gzip']},
 151
 152         # Enable text search, which will list the commits which match author,
 153         # committer or commit text to a given string.  Enabled by default.
 154         # Project specific override is not supported.
 155         'search' => {
 156                 'override' => 0,
 157                 'default' => [1]},
 158
 159         # Enable grep search, which will list the files in currently selected
 160         # tree containing the given string. Enabled by default. This can be
 161         # potentially CPU-intensive, of course.
 162
 163         # To enable system wide have in $GITWEB_CONFIG
 164         # $feature{'grep'}{'default'} = [1];
 165         # To have project specific config enable override in $GITWEB_CONFIG
 166         # $feature{'grep'}{'override'} = 1;
 167         # and in project config gitweb.grep = 0|1;
 168         'grep' => {
 169                 'override' => 0,
 170                 'default' => [1]},
 171
 172         # Enable the pickaxe search, which will list the commits that modified
 173         # a given string in a file. This can be practical and quite faster
 174         # alternative to 'blame', but still potentially CPU-intensive.
 175
 176         # To enable system wide have in $GITWEB_CONFIG
 177         # $feature{'pickaxe'}{'default'} = [1];
 178         # To have project specific config enable override in $GITWEB_CONFIG
 179         # $feature{'pickaxe'}{'override'} = 1;
 180         # and in project config gitweb.pickaxe = 0|1;
 181         'pickaxe' => {
 182                 'sub' => \&feature_pickaxe,
 183                 'override' => 0,
 184                 'default' => [1]},
 185
 186         # Make gitweb use an alternative format of the URLs which can be
 187         # more readable and natural-looking: project name is embedded
 188         # directly in the path and the query string contains other
 189         # auxiliary information. All gitweb installations recognize
 190         # URL in either format; this configures in which formats gitweb
 191         # generates links.
 192
 193         # To enable system wide have in $GITWEB_CONFIG
 194         # $feature{'pathinfo'}{'default'} = [1];
 195         # Project specific override is not supported.
 196
 197         # Note that you will need to change the default location of CSS,
 198         # favicon, logo and possibly other files to an absolute URL. Also,
 199         # if gitweb.cgi serves as your indexfile, you will need to force
 200         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 201         'pathinfo' => {
 202                 'override' => 0,
 203                 'default' => [0]},
 204
 205         # Make gitweb consider projects in project root subdirectories
 206         # to be forks of existing projects. Given project $projname.git,
 207         # projects matching $projname/*.git will not be shown in the main
 208         # projects list, instead a '+' mark will be added to $projname
 209         # there and a 'forks' view will be enabled for the project, listing
 210         # all the forks. If project list is taken from a file, forks have
 211         # to be listed after the main project.
 212
 213         # To enable system wide have in $GITWEB_CONFIG
 214         # $feature{'forks'}{'default'} = [1];
 215         # Project specific override is not supported.
 216         'forks' => {
 217                 'override' => 0,
 218                 'default' => [0]},
 219 );
 220
 221 sub gitweb_check_feature {
 222         my ($name) = @_;
 223         return unless exists $feature{$name};
 224         my ($sub, $override, @defaults) = (
 225                 $feature{$name}{'sub'},
 226                 $feature{$name}{'override'},
 227                 @{$feature{$name}{'default'}});
 228         if (!$override) { return @defaults; }
 229         if (!defined $sub) {
 230                 warn "feature $name is not overrideable";
 231                 return @defaults;
 232         }
 233         return $sub->(@defaults);
 234 }
 235
 236 sub feature_blame {
 237         my ($val) = git_get_project_config('blame', '--bool');
 238
 239         if ($val eq 'true') {
 240                 return 1;
 241         } elsif ($val eq 'false') {
 242                 return 0;
 243         }
 244
 245         return $_[0];
 246 }
 247
 248 sub feature_snapshot {
 249         my ($ctype, $suffix, $command) = @_;
 250
 251         my ($val) = git_get_project_config('snapshot');
 252
 253         if ($val eq 'gzip') {
 254                 return ('x-gzip', 'gz', 'gzip');
 255         } elsif ($val eq 'bzip2') {
 256                 return ('x-bzip2', 'bz2', 'bzip2');
 257         } elsif ($val eq 'zip') {
 258                 return ('x-zip', 'zip', '');
 259         } elsif ($val eq 'none') {
 260                 return ();
 261         }
 262
 263         return ($ctype, $suffix, $command);
 264 }
 265
 266 sub gitweb_have_snapshot {
 267         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 268         my $have_snapshot = (defined $ctype && defined $suffix);
 269
 270         return $have_snapshot;
 271 }
 272
 273 sub feature_grep {
 274         my ($val) = git_get_project_config('grep', '--bool');
 275
 276         if ($val eq 'true') {
 277                 return (1);
 278         } elsif ($val eq 'false') {
 279                 return (0);
 280         }
 281
 282         return ($_[0]);
 283 }
 284
 285 sub feature_pickaxe {
 286         my ($val) = git_get_project_config('pickaxe', '--bool');
 287
 288         if ($val eq 'true') {
 289                 return (1);
 290         } elsif ($val eq 'false') {
 291                 return (0);
 292         }
 293
 294         return ($_[0]);
 295 }
 296
 297 # checking HEAD file with -e is fragile if the repository was
 298 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 299 # and then pruned.
 300 sub check_head_link {
 301         my ($dir) = @_;
 302         my $headfile = "$dir/HEAD";
 303         return ((-e $headfile) ||
 304                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 305 }
 306
 307 sub check_export_ok {
 308         my ($dir) = @_;
 309         return (check_head_link($dir) &&
 310                 (!$export_ok || -e "$dir/$export_ok"));
 311 }
 312
 313 # rename detection options for git-diff and git-diff-tree
 314 # - default is '-M', with the cost proportional to
 315 #   (number of removed files) * (number of new files).
 316 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 317 #   (number of changed files + number of removed files) * (number of new files)
 318 # - even more costly is '-C', '--find-copies-harder' with cost
 319 #   (number of files in the original tree) * (number of new files)
 320 # - one might want to include '-B' option, e.g. '-B', '-M'
 321 our @diff_opts = ('-M'); # taken from git_commit
 322
 323 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 324 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 325
 326 # version of the core git binary
 327 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 328
 329 $projects_list ||= $projectroot;
 330
 331 # ======================================================================
 332 # input validation and dispatch
 333 our $action = $cgi->param('a');
 334 if (defined $action) {
 335         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 336                 die_error(undef, "Invalid action parameter");
 337         }
 338 }
 339
 340 # parameters which are pathnames
 341 our $project = $cgi->param('p');
 342 if (defined $project) {
 343         if (!validate_pathname($project) ||
 344             !(-d "$projectroot/$project") ||
 345             !check_head_link("$projectroot/$project") ||
 346             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 347             ($strict_export && !project_in_list($project))) {
 348                 undef $project;
 349                 die_error(undef, "No such project");
 350         }
 351 }
 352
 353 our $file_name = $cgi->param('f');
 354 if (defined $file_name) {
 355         if (!validate_pathname($file_name)) {
 356                 die_error(undef, "Invalid file parameter");
 357         }
 358 }
 359
 360 our $file_parent = $cgi->param('fp');
 361 if (defined $file_parent) {
 362         if (!validate_pathname($file_parent)) {
 363                 die_error(undef, "Invalid file parent parameter");
 364         }
 365 }
 366
 367 # parameters which are refnames
 368 our $hash = $cgi->param('h');
 369 if (defined $hash) {
 370         if (!validate_refname($hash)) {
 371                 die_error(undef, "Invalid hash parameter");
 372         }
 373 }
 374
 375 our $hash_parent = $cgi->param('hp');
 376 if (defined $hash_parent) {
 377         if (!validate_refname($hash_parent)) {
 378                 die_error(undef, "Invalid hash parent parameter");
 379         }
 380 }
 381
 382 our $hash_base = $cgi->param('hb');
 383 if (defined $hash_base) {
 384         if (!validate_refname($hash_base)) {
 385                 die_error(undef, "Invalid hash base parameter");
 386         }
 387 }
 388
 389 our $hash_parent_base = $cgi->param('hpb');
 390 if (defined $hash_parent_base) {
 391         if (!validate_refname($hash_parent_base)) {
 392                 die_error(undef, "Invalid hash parent base parameter");
 393         }
 394 }
 395
 396 # other parameters
 397 our $page = $cgi->param('pg');
 398 if (defined $page) {
 399         if ($page =~ m/[^0-9]/) {
 400                 die_error(undef, "Invalid page parameter");
 401         }
 402 }
 403
 404 our $searchtype = $cgi->param('st');
 405 if (defined $searchtype) {
 406         if ($searchtype =~ m/[^a-z]/) {
 407                 die_error(undef, "Invalid searchtype parameter");
 408         }
 409 }
 410
 411 our $searchtext = $cgi->param('s');
 412 our $search_regexp;
 413 if (defined $searchtext) {
 414         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 415                 die_error(undef, "Invalid search parameter");
 416         }
 417         if (length($searchtext) < 2) {
 418                 die_error(undef, "At least two characters are required for search parameter");
 419         }
 420         $search_regexp = quotemeta $searchtext;
 421 }
 422
 423 # now read PATH_INFO and use it as alternative to parameters
 424 sub evaluate_path_info {
 425         return if defined $project;
 426         my $path_info = $ENV{"PATH_INFO"};
 427         return if !$path_info;
 428         $path_info =~ s,^/+,,;
 429         return if !$path_info;
 430         # find which part of PATH_INFO is project
 431         $project = $path_info;
 432         $project =~ s,/+$,,;
 433         while ($project && !check_head_link("$projectroot/$project")) {
 434                 $project =~ s,/*[^/]*$,,;
 435         }
 436         # validate project
 437         $project = validate_pathname($project);
 438         if (!$project ||
 439             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 440             ($strict_export && !project_in_list($project))) {
 441                 undef $project;
 442                 return;
 443         }
 444         # do not change any parameters if an action is given using the query string
 445         return if $action;
 446         $path_info =~ s,^$project/*,,;
 447         my ($refname, $pathname) = split(/:/, $path_info, 2);
 448         if (defined $pathname) {
 449                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 450                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 451                 $pathname =~ s,^/+,,;
 452                 if (!$pathname || substr($pathname, -1) eq "/") {
 453                         $action  ||= "tree";
 454                         $pathname =~ s,/$,,;
 455                 } else {
 456                         $action  ||= "blob_plain";
 457                 }
 458                 $hash_base ||= validate_refname($refname);
 459                 $file_name ||= validate_pathname($pathname);
 460         } elsif (defined $refname) {
 461                 # we got "project.git/branch"
 462                 $action ||= "shortlog";
 463                 $hash   ||= validate_refname($refname);
 464         }
 465 }
 466 evaluate_path_info();
 467
 468 # path to the current git repository
 469 our $git_dir;
 470 $git_dir = "$projectroot/$project" if $project;
 471
 472 # dispatch
 473 my %actions = (
 474         "blame" => \&git_blame2,
 475         "blobdiff" => \&git_blobdiff,
 476         "blobdiff_plain" => \&git_blobdiff_plain,
 477         "blob" => \&git_blob,
 478         "blob_plain" => \&git_blob_plain,
 479         "commitdiff" => \&git_commitdiff,
 480         "commitdiff_plain" => \&git_commitdiff_plain,
 481         "commit" => \&git_commit,
 482         "forks" => \&git_forks,
 483         "heads" => \&git_heads,
 484         "history" => \&git_history,
 485         "log" => \&git_log,
 486         "rss" => \&git_rss,
 487         "atom" => \&git_atom,
 488         "search" => \&git_search,
 489         "search_help" => \&git_search_help,
 490         "shortlog" => \&git_shortlog,
 491         "summary" => \&git_summary,
 492         "tag" => \&git_tag,
 493         "tags" => \&git_tags,
 494         "tree" => \&git_tree,
 495         "snapshot" => \&git_snapshot,
 496         "object" => \&git_object,
 497         # those below don't need $project
 498         "opml" => \&git_opml,
 499         "project_list" => \&git_project_list,
 500         "project_index" => \&git_project_index,
 501 );
 502
 503 if (!defined $action) {
 504         if (defined $hash) {
 505                 $action = git_get_type($hash);
 506         } elsif (defined $hash_base && defined $file_name) {
 507                 $action = git_get_type("$hash_base:$file_name");
 508         } elsif (defined $project) {
 509                 $action = 'summary';
 510         } else {
 511                 $action = 'project_list';
 512         }
 513 }
 514 if (!defined($actions{$action})) {
 515         die_error(undef, "Unknown action");
 516 }
 517 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 518     !$project) {
 519         die_error(undef, "Project needed");
 520 }
 521 $actions{$action}->();
 522 exit;
 523
 524 ## ======================================================================
 525 ## action links
 526
 527 sub href(%) {
 528         my %params = @_;
 529         # default is to use -absolute url() i.e. $my_uri
 530         my $href = $params{-full} ? $my_url : $my_uri;
 531
 532         # XXX: Warning: If you touch this, check the search form for updating,
 533         # too.
 534
 535         my @mapping = (
 536                 project => "p",
 537                 action => "a",
 538                 file_name => "f",
 539                 file_parent => "fp",
 540                 hash => "h",
 541                 hash_parent => "hp",
 542                 hash_base => "hb",
 543                 hash_parent_base => "hpb",
 544                 page => "pg",
 545                 order => "o",
 546                 searchtext => "s",
 547                 searchtype => "st",
 548         );
 549         my %mapping = @mapping;
 550
 551         $params{'project'} = $project unless exists $params{'project'};
 552
 553         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 554         if ($use_pathinfo) {
 555                 # use PATH_INFO for project name
 556                 $href .= "/$params{'project'}" if defined $params{'project'};
 557                 delete $params{'project'};
 558
 559                 # Summary just uses the project path URL
 560                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 561                         delete $params{'action'};
 562                 }
 563         }
 564
 565         # now encode the parameters explicitly
 566         my @result = ();
 567         for (my $i = 0; $i < @mapping; $i += 2) {
 568                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 569                 if (defined $params{$name}) {
 570                         push @result, $symbol . "=" . esc_param($params{$name});
 571                 }
 572         }
 573         $href .= "?" . join(';', @result) if scalar @result;
 574
 575         return $href;
 576 }
 577
 578
 579 ## ======================================================================
 580 ## validation, quoting/unquoting and escaping
 581
 582 sub validate_pathname {
 583         my $input = shift || return undef;
 584
 585         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 586         # at the beginning, at the end, and between slashes.
 587         # also this catches doubled slashes
 588         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 589                 return undef;
 590         }
 591         # no null characters
 592         if ($input =~ m!\0!) {
 593                 return undef;
 594         }
 595         return $input;
 596 }
 597
 598 sub validate_refname {
 599         my $input = shift || return undef;
 600
 601         # textual hashes are O.K.
 602         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 603                 return $input;
 604         }
 605         # it must be correct pathname
 606         $input = validate_pathname($input)
 607                 or return undef;
 608         # restrictions on ref name according to git-check-ref-format
 609         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 610                 return undef;
 611         }
 612         return $input;
 613 }
 614
 615 # decode sequences of octets in utf8 into Perl's internal form,
 616 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 617 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 618 sub to_utf8 {
 619         my $str = shift;
 620         my $res;
 621         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 622         if (defined $res) {
 623                 return $res;
 624         } else {
 625                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 626         }
 627 }
 628
 629 # quote unsafe chars, but keep the slash, even when it's not
 630 # correct, but quoted slashes look too horrible in bookmarks
 631 sub esc_param {
 632         my $str = shift;
 633         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 634         $str =~ s/\+/%2B/g;
 635         $str =~ s/ /\+/g;
 636         return $str;
 637 }
 638
 639 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 640 sub esc_url {
 641         my $str = shift;
 642         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 643         $str =~ s/\+/%2B/g;
 644         $str =~ s/ /\+/g;
 645         return $str;
 646 }
 647
 648 # replace invalid utf8 character with SUBSTITUTION sequence
 649 sub esc_html ($;%) {
 650         my $str = shift;
 651         my %opts = @_;
 652
 653         $str = to_utf8($str);
 654         $str = $cgi->escapeHTML($str);
 655         if ($opts{'-nbsp'}) {
 656                 $str =~ s/ /&nbsp;/g;
 657         }
 658         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 659         return $str;
 660 }
 661
 662 # quote control characters and escape filename to HTML
 663 sub esc_path {
 664         my $str = shift;
 665         my %opts = @_;
 666
 667         $str = to_utf8($str);
 668         $str = $cgi->escapeHTML($str);
 669         if ($opts{'-nbsp'}) {
 670                 $str =~ s/ /&nbsp;/g;
 671         }
 672         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 673         return $str;
 674 }
 675
 676 # Make control characters "printable", using character escape codes (CEC)
 677 sub quot_cec {
 678         my $cntrl = shift;
 679         my %es = ( # character escape codes, aka escape sequences
 680                    "\t" => '\t',   # tab            (HT)
 681                    "\n" => '\n',   # line feed      (LF)
 682                    "\r" => '\r',   # carrige return (CR)
 683                    "\f" => '\f',   # form feed      (FF)
 684                    "\b" => '\b',   # backspace      (BS)
 685                    "\a" => '\a',   # alarm (bell)   (BEL)
 686                    "\e" => '\e',   # escape         (ESC)
 687                    "\013" => '\v', # vertical tab   (VT)
 688                    "\000" => '\0', # nul character  (NUL)
 689                    );
 690         my $chr = ( (exists $es{$cntrl})
 691                     ? $es{$cntrl}
 692                     : sprintf('\%03o', ord($cntrl)) );
 693         return "<span class=\"cntrl\">$chr</span>";
 694 }
 695
 696 # Alternatively use unicode control pictures codepoints,
 697 # Unicode "printable representation" (PR)
 698 sub quot_upr {
 699         my $cntrl = shift;
 700         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 701         return "<span class=\"cntrl\">$chr</span>";
 702 }
 703
 704 # git may return quoted and escaped filenames
 705 sub unquote {
 706         my $str = shift;
 707
 708         sub unq {
 709                 my $seq = shift;
 710                 my %es = ( # character escape codes, aka escape sequences
 711                         't' => "\t",   # tab            (HT, TAB)
 712                         'n' => "\n",   # newline        (NL)
 713                         'r' => "\r",   # return         (CR)
 714                         'f' => "\f",   # form feed      (FF)
 715                         'b' => "\b",   # backspace      (BS)
 716                         'a' => "\a",   # alarm (bell)   (BEL)
 717                         'e' => "\e",   # escape         (ESC)
 718                         'v' => "\013", # vertical tab   (VT)
 719                 );
 720
 721                 if ($seq =~ m/^[0-7]{1,3}$/) {
 722                         # octal char sequence
 723                         return chr(oct($seq));
 724                 } elsif (exists $es{$seq}) {
 725                         # C escape sequence, aka character escape code
 726                         return $es{$seq}
 727                 }
 728                 # quoted ordinary character
 729                 return $seq;
 730         }
 731
 732         if ($str =~ m/^"(.*)"$/) {
 733                 # needs unquoting
 734                 $str = $1;
 735                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 736         }
 737         return $str;
 738 }
 739
 740 # escape tabs (convert tabs to spaces)
 741 sub untabify {
 742         my $line = shift;
 743
 744         while ((my $pos = index($line, "\t")) != -1) {
 745                 if (my $count = (8 - ($pos % 8))) {
 746                         my $spaces = ' ' x $count;
 747                         $line =~ s/\t/$spaces/;
 748                 }
 749         }
 750
 751         return $line;
 752 }
 753
 754 sub project_in_list {
 755         my $project = shift;
 756         my @list = git_get_projects_list();
 757         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 758 }
 759
 760 ## ----------------------------------------------------------------------
 761 ## HTML aware string manipulation
 762
 763 sub chop_str {
 764         my $str = shift;
 765         my $len = shift;
 766         my $add_len = shift || 10;
 767
 768         # allow only $len chars, but don't cut a word if it would fit in $add_len
 769         # if it doesn't fit, cut it if it's still longer than the dots we would add
 770         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 771         my $body = $1;
 772         my $tail = $2;
 773         if (length($tail) > 4) {
 774                 $tail = " ...";
 775                 $body =~ s/&[^;]*$//; # remove chopped character entities
 776         }
 777         return "$body$tail";
 778 }
 779
 780 ## ----------------------------------------------------------------------
 781 ## functions returning short strings
 782
 783 # CSS class for given age value (in seconds)
 784 sub age_class {
 785         my $age = shift;
 786
 787         if (!defined $age) {
 788                 return "noage";
 789         } elsif ($age < 60*60*2) {
 790                 return "age0";
 791         } elsif ($age < 60*60*24*2) {
 792                 return "age1";
 793         } else {
 794                 return "age2";
 795         }
 796 }
 797
 798 # convert age in seconds to "nn units ago" string
 799 sub age_string {
 800         my $age = shift;
 801         my $age_str;
 802
 803         if ($age > 60*60*24*365*2) {
 804                 $age_str = (int $age/60/60/24/365);
 805                 $age_str .= " years ago";
 806         } elsif ($age > 60*60*24*(365/12)*2) {
 807                 $age_str = int $age/60/60/24/(365/12);
 808                 $age_str .= " months ago";
 809         } elsif ($age > 60*60*24*7*2) {
 810                 $age_str = int $age/60/60/24/7;
 811                 $age_str .= " weeks ago";
 812         } elsif ($age > 60*60*24*2) {
 813                 $age_str = int $age/60/60/24;
 814                 $age_str .= " days ago";
 815         } elsif ($age > 60*60*2) {
 816                 $age_str = int $age/60/60;
 817                 $age_str .= " hours ago";
 818         } elsif ($age > 60*2) {
 819                 $age_str = int $age/60;
 820                 $age_str .= " min ago";
 821         } elsif ($age > 2) {
 822                 $age_str = int $age;
 823                 $age_str .= " sec ago";
 824         } else {
 825                 $age_str .= " right now";
 826         }
 827         return $age_str;
 828 }
 829
 830 # convert file mode in octal to symbolic file mode string
 831 sub mode_str {
 832         my $mode = oct shift;
 833
 834         if (S_ISDIR($mode & S_IFMT)) {
 835                 return 'drwxr-xr-x';
 836         } elsif (S_ISLNK($mode)) {
 837                 return 'lrwxrwxrwx';
 838         } elsif (S_ISREG($mode)) {
 839                 # git cares only about the executable bit
 840                 if ($mode & S_IXUSR) {
 841                         return '-rwxr-xr-x';
 842                 } else {
 843                         return '-rw-r--r--';
 844                 };
 845         } else {
 846                 return '----------';
 847         }
 848 }
 849
 850 # convert file mode in octal to file type string
 851 sub file_type {
 852         my $mode = shift;
 853
 854         if ($mode !~ m/^[0-7]+$/) {
 855                 return $mode;
 856         } else {
 857                 $mode = oct $mode;
 858         }
 859
 860         if (S_ISDIR($mode & S_IFMT)) {
 861                 return "directory";
 862         } elsif (S_ISLNK($mode)) {
 863                 return "symlink";
 864         } elsif (S_ISREG($mode)) {
 865                 return "file";
 866         } else {
 867                 return "unknown";
 868         }
 869 }
 870
 871 # convert file mode in octal to file type description string
 872 sub file_type_long {
 873         my $mode = shift;
 874
 875         if ($mode !~ m/^[0-7]+$/) {
 876                 return $mode;
 877         } else {
 878                 $mode = oct $mode;
 879         }
 880
 881         if (S_ISDIR($mode & S_IFMT)) {
 882                 return "directory";
 883         } elsif (S_ISLNK($mode)) {
 884                 return "symlink";
 885         } elsif (S_ISREG($mode)) {
 886                 if ($mode & S_IXUSR) {
 887                         return "executable";
 888                 } else {
 889                         return "file";
 890                 };
 891         } else {
 892                 return "unknown";
 893         }
 894 }
 895
 896
 897 ## ----------------------------------------------------------------------
 898 ## functions returning short HTML fragments, or transforming HTML fragments
 899 ## which don't belong to other sections
 900
 901 # format line of commit message.
 902 sub format_log_line_html {
 903         my $line = shift;
 904
 905         $line = esc_html($line, -nbsp=>1);
 906         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 907                 my $hash_text = $1;
 908                 my $link =
 909                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 910                                 -class => "text"}, $hash_text);
 911                 $line =~ s/$hash_text/$link/;
 912         }
 913         return $line;
 914 }
 915
 916 # format marker of refs pointing to given object
 917 sub format_ref_marker {
 918         my ($refs, $id) = @_;
 919         my $markers = '';
 920
 921         if (defined $refs->{$id}) {
 922                 foreach my $ref (@{$refs->{$id}}) {
 923                         my ($type, $name) = qw();
 924                         # e.g. tags/v2.6.11 or heads/next
 925                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 926                                 $type = $1;
 927                                 $name = $2;
 928                         } else {
 929                                 $type = "ref";
 930                                 $name = $ref;
 931                         }
 932
 933                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 934                                     esc_html($name) . "</span>";
 935                 }
 936         }
 937
 938         if ($markers) {
 939                 return ' <span class="refs">'. $markers . '</span>';
 940         } else {
 941                 return "";
 942         }
 943 }
 944
 945 # format, perhaps shortened and with markers, title line
 946 sub format_subject_html {
 947         my ($long, $short, $href, $extra) = @_;
 948         $extra = '' unless defined($extra);
 949
 950         if (length($short) < length($long)) {
 951                 return $cgi->a({-href => $href, -class => "list subject",
 952                                 -title => to_utf8($long)},
 953                        esc_html($short) . $extra);
 954         } else {
 955                 return $cgi->a({-href => $href, -class => "list subject"},
 956                        esc_html($long)  . $extra);
 957         }
 958 }
 959
 960 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 961 sub format_git_diff_header_line {
 962         my $line = shift;
 963         my $diffinfo = shift;
 964         my ($from, $to) = @_;
 965
 966         if ($diffinfo->{'nparents'}) {
 967                 # combined diff
 968                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 969                 if ($to->{'href'}) {
 970                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 971                                          esc_path($to->{'file'}));
 972                 } else { # file was deleted (no href)
 973                         $line .= esc_path($to->{'file'});
 974                 }
 975         } else {
 976                 # "ordinary" diff
 977                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 978                 if ($from->{'href'}) {
 979                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 980                                          'a/' . esc_path($from->{'file'}));
 981                 } else { # file was added (no href)
 982                         $line .= 'a/' . esc_path($from->{'file'});
 983                 }
 984                 $line .= ' ';
 985                 if ($to->{'href'}) {
 986                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 987                                          'b/' . esc_path($to->{'file'}));
 988                 } else { # file was deleted
 989                         $line .= 'b/' . esc_path($to->{'file'});
 990                 }
 991         }
 992
 993         return "<div class=\"diff header\">$line</div>\n";
 994 }
 995
 996 # format extended diff header line, before patch itself
 997 sub format_extended_diff_header_line {
 998         my $line = shift;
 999         my $diffinfo = shift;
1000         my ($from, $to) = @_;
1001
1002         # match <path>
1003         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1004                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1005                                        esc_path($from->{'file'}));
1006         }
1007         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1008                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1009                                  esc_path($to->{'file'}));
1010         }
1011         # match single <mode>
1012         if ($line =~ m/\s(\d{6})$/) {
1013                 $line .= '<span class="info"> (' .
1014                          file_type_long($1) .
1015                          ')</span>';
1016         }
1017         # match <hash>
1018         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1019                 # can match only for combined diff
1020                 $line = 'index ';
1021                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1022                         if ($from->{'href'}[$i]) {
1023                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1024                                                   -class=>"hash"},
1025                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1026                         } else {
1027                                 $line .= '0' x 7;
1028                         }
1029                         # separator
1030                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1031                 }
1032                 $line .= '..';
1033                 if ($to->{'href'}) {
1034                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1035                                          substr($diffinfo->{'to_id'},0,7));
1036                 } else {
1037                         $line .= '0' x 7;
1038                 }
1039
1040         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1041                 # can match only for ordinary diff
1042                 my ($from_link, $to_link);
1043                 if ($from->{'href'}) {
1044                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1045                                              substr($diffinfo->{'from_id'},0,7));
1046                 } else {
1047                         $from_link = '0' x 7;
1048                 }
1049                 if ($to->{'href'}) {
1050                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1051                                            substr($diffinfo->{'to_id'},0,7));
1052                 } else {
1053                         $to_link = '0' x 7;
1054                 }
1055                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1056                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1057         }
1058
1059         return $line . "<br/>\n";
1060 }
1061
1062 # format from-file/to-file diff header
1063 sub format_diff_from_to_header {
1064         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1065         my $line;
1066         my $result = '';
1067
1068         $line = $from_line;
1069         #assert($line =~ m/^---/) if DEBUG;
1070         # no extra formatting for "^--- /dev/null"
1071         if (! $diffinfo->{'nparents'}) {
1072                 # ordinary (single parent) diff
1073                 if ($line =~ m!^--- "?a/!) {
1074                         if ($from->{'href'}) {
1075                                 $line = '--- a/' .
1076                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1077                                                 esc_path($from->{'file'}));
1078                         } else {
1079                                 $line = '--- a/' .
1080                                         esc_path($from->{'file'});
1081                         }
1082                 }
1083                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1084
1085         } else {
1086                 # combined diff (merge commit)
1087                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1088                         if ($from->{'href'}[$i]) {
1089                                 $line = '--- ' .
1090                                         $cgi->a({-href=>href(action=>"blobdiff",
1091                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1092                                                              hash_parent_base=>$parents[$i],
1093                                                              file_parent=>$from->{'file'}[$i],
1094                                                              hash=>$diffinfo->{'to_id'},
1095                                                              hash_base=>$hash,
1096                                                              file_name=>$to->{'file'}),
1097                                                  -class=>"path",
1098                                                  -title=>"diff" . ($i+1)},
1099                                                 $i+1) .
1100                                         '/' .
1101                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1102                                                 esc_path($from->{'file'}[$i]));
1103                         } else {
1104                                 $line = '--- /dev/null';
1105                         }
1106                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1107                 }
1108         }
1109
1110         $line = $to_line;
1111         #assert($line =~ m/^\+\+\+/) if DEBUG;
1112         # no extra formatting for "^+++ /dev/null"
1113         if ($line =~ m!^\+\+\+ "?b/!) {
1114                 if ($to->{'href'}) {
1115                         $line = '+++ b/' .
1116                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1117                                         esc_path($to->{'file'}));
1118                 } else {
1119                         $line = '+++ b/' .
1120                                 esc_path($to->{'file'});
1121                 }
1122         }
1123         $result .= qq!<div class="diff to_file">$line</div>\n!;
1124
1125         return $result;
1126 }
1127
1128 # create note for patch simplified by combined diff
1129 sub format_diff_cc_simplified {
1130         my ($diffinfo, @parents) = @_;
1131         my $result = '';
1132
1133         $result .= "<div class=\"diff header\">" .
1134                    "diff --cc ";
1135         if (!is_deleted($diffinfo)) {
1136                 $result .= $cgi->a({-href => href(action=>"blob",
1137                                                   hash_base=>$hash,
1138                                                   hash=>$diffinfo->{'to_id'},
1139                                                   file_name=>$diffinfo->{'to_file'}),
1140                                     -class => "path"},
1141                                    esc_path($diffinfo->{'to_file'}));
1142         } else {
1143                 $result .= esc_path($diffinfo->{'to_file'});
1144         }
1145         $result .= "</div>\n" . # class="diff header"
1146                    "<div class=\"diff nodifferences\">" .
1147                    "Simple merge" .
1148                    "</div>\n"; # class="diff nodifferences"
1149
1150         return $result;
1151 }
1152
1153 # format patch (diff) line (not to be used for diff headers)
1154 sub format_diff_line {
1155         my $line = shift;
1156         my ($from, $to) = @_;
1157         my $diff_class = "";
1158
1159         chomp $line;
1160
1161         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1162                 # combined diff
1163                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1164                 if ($line =~ m/^\@{3}/) {
1165                         $diff_class = " chunk_header";
1166                 } elsif ($line =~ m/^\\/) {
1167                         $diff_class = " incomplete";
1168                 } elsif ($prefix =~ tr/+/+/) {
1169                         $diff_class = " add";
1170                 } elsif ($prefix =~ tr/-/-/) {
1171                         $diff_class = " rem";
1172                 }
1173         } else {
1174                 # assume ordinary diff
1175                 my $char = substr($line, 0, 1);
1176                 if ($char eq '+') {
1177                         $diff_class = " add";
1178                 } elsif ($char eq '-') {
1179                         $diff_class = " rem";
1180                 } elsif ($char eq '@') {
1181                         $diff_class = " chunk_header";
1182                 } elsif ($char eq "\\") {
1183                         $diff_class = " incomplete";
1184                 }
1185         }
1186         $line = untabify($line);
1187         if ($from && $to && $line =~ m/^\@{2} /) {
1188                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1189                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1190
1191                 $from_lines = 0 unless defined $from_lines;
1192                 $to_lines   = 0 unless defined $to_lines;
1193
1194                 if ($from->{'href'}) {
1195                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1196                                              -class=>"list"}, $from_text);
1197                 }
1198                 if ($to->{'href'}) {
1199                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1200                                              -class=>"list"}, $to_text);
1201                 }
1202                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1203                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1204                 return "<div class=\"diff$diff_class\">$line</div>\n";
1205         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1206                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1207                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1208
1209                 @from_text = split(' ', $ranges);
1210                 for (my $i = 0; $i < @from_text; ++$i) {
1211                         ($from_start[$i], $from_nlines[$i]) =
1212                                 (split(',', substr($from_text[$i], 1)), 0);
1213                 }
1214
1215                 $to_text   = pop @from_text;
1216                 $to_start  = pop @from_start;
1217                 $to_nlines = pop @from_nlines;
1218
1219                 $line = "<span class=\"chunk_info\">$prefix ";
1220                 for (my $i = 0; $i < @from_text; ++$i) {
1221                         if ($from->{'href'}[$i]) {
1222                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1223                                                   -class=>"list"}, $from_text[$i]);
1224                         } else {
1225                                 $line .= $from_text[$i];
1226                         }
1227                         $line .= " ";
1228                 }
1229                 if ($to->{'href'}) {
1230                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1231                                           -class=>"list"}, $to_text);
1232                 } else {
1233                         $line .= $to_text;
1234                 }
1235                 $line .= " $prefix</span>" .
1236                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1237                 return "<div class=\"diff$diff_class\">$line</div>\n";
1238         }
1239         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1240 }
1241
1242 ## ----------------------------------------------------------------------
1243 ## git utility subroutines, invoking git commands
1244
1245 # returns path to the core git executable and the --git-dir parameter as list
1246 sub git_cmd {
1247         return $GIT, '--git-dir='.$git_dir;
1248 }
1249
1250 # returns path to the core git executable and the --git-dir parameter as string
1251 sub git_cmd_str {
1252         return join(' ', git_cmd());
1253 }
1254
1255 # get HEAD ref of given project as hash
1256 sub git_get_head_hash {
1257         my $project = shift;
1258         my $o_git_dir = $git_dir;
1259         my $retval = undef;
1260         $git_dir = "$projectroot/$project";
1261         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1262                 my $head = <$fd>;
1263                 close $fd;
1264                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1265                         $retval = $1;
1266                 }
1267         }
1268         if (defined $o_git_dir) {
1269                 $git_dir = $o_git_dir;
1270         }
1271         return $retval;
1272 }
1273
1274 # get type of given object
1275 sub git_get_type {
1276         my $hash = shift;
1277
1278         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1279         my $type = <$fd>;
1280         close $fd or return;
1281         chomp $type;
1282         return $type;
1283 }
1284
1285 sub git_get_project_config {
1286         my ($key, $type) = @_;
1287
1288         return unless ($key);
1289         $key =~ s/^gitweb\.//;
1290         return if ($key =~ m/\W/);
1291
1292         my @x = (git_cmd(), 'config');
1293         if (defined $type) { push @x, $type; }
1294         push @x, "--get";
1295         push @x, "gitweb.$key";
1296         my $val = qx(@x);
1297         chomp $val;
1298         return ($val);
1299 }
1300
1301 # get hash of given path at given ref
1302 sub git_get_hash_by_path {
1303         my $base = shift;
1304         my $path = shift || return undef;
1305         my $type = shift;
1306
1307         $path =~ s,/+$,,;
1308
1309         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1310                 or die_error(undef, "Open git-ls-tree failed");
1311         my $line = <$fd>;
1312         close $fd or return undef;
1313
1314         if (!defined $line) {
1315                 # there is no tree or hash given by $path at $base
1316                 return undef;
1317         }
1318
1319         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1320         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1321         if (defined $type && $type ne $2) {
1322                 # type doesn't match
1323                 return undef;
1324         }
1325         return $3;
1326 }
1327
1328 # get path of entry with given hash at given tree-ish (ref)
1329 # used to get 'from' filename for combined diff (merge commit) for renames
1330 sub git_get_path_by_hash {
1331         my $base = shift || return;
1332         my $hash = shift || return;
1333
1334         local $/ = "\0";
1335
1336         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1337                 or return undef;
1338         while (my $line = <$fd>) {
1339                 chomp $line;
1340
1341                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1342                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1343                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1344                         close $fd;
1345                         return $1;
1346                 }
1347         }
1348         close $fd;
1349         return undef;
1350 }
1351
1352 ## ......................................................................
1353 ## git utility functions, directly accessing git repository
1354
1355 sub git_get_project_description {
1356         my $path = shift;
1357
1358         open my $fd, "$projectroot/$path/description" or return undef;
1359         my $descr = <$fd>;
1360         close $fd;
1361         if (defined $descr) {
1362                 chomp $descr;
1363         }
1364         return $descr;
1365 }
1366
1367 sub git_get_project_url_list {
1368         my $path = shift;
1369
1370         open my $fd, "$projectroot/$path/cloneurl" or return;
1371         my @git_project_url_list = map { chomp; $_ } <$fd>;
1372         close $fd;
1373
1374         return wantarray ? @git_project_url_list : \@git_project_url_list;
1375 }
1376
1377 sub git_get_projects_list {
1378         my ($filter) = @_;
1379         my @list;
1380
1381         $filter ||= '';
1382         $filter =~ s/\.git$//;
1383
1384         my ($check_forks) = gitweb_check_feature('forks');
1385
1386         if (-d $projects_list) {
1387                 # search in directory
1388                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1389                 # remove the trailing "/"
1390                 $dir =~ s!/+$!!;
1391                 my $pfxlen = length("$dir");
1392
1393                 File::Find::find({
1394                         follow_fast => 1, # follow symbolic links
1395                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1396                         wanted => sub {
1397                                 # skip project-list toplevel, if we get it.
1398                                 return if (m!^[/.]$!);
1399                                 # only directories can be git repositories
1400                                 return unless (-d $_);
1401
1402                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1403                                 # we check related file in $projectroot
1404                                 if ($check_forks and $subdir =~ m#/.#) {
1405                                         $File::Find::prune = 1;
1406                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1407                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1408                                         $File::Find::prune = 1;
1409                                 }
1410                         },
1411                 }, "$dir");
1412
1413         } elsif (-f $projects_list) {
1414                 # read from file(url-encoded):
1415                 # 'git%2Fgit.git Linus+Torvalds'
1416                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1417                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1418                 my %paths;
1419                 open my ($fd), $projects_list or return;
1420         PROJECT:
1421                 while (my $line = <$fd>) {
1422                         chomp $line;
1423                         my ($path, $owner) = split ' ', $line;
1424                         $path = unescape($path);
1425                         $owner = unescape($owner);
1426                         if (!defined $path) {
1427                                 next;
1428                         }
1429                         if ($filter ne '') {
1430                                 # looking for forks;
1431                                 my $pfx = substr($path, 0, length($filter));
1432                                 if ($pfx ne $filter) {
1433                                         next PROJECT;
1434                                 }
1435                                 my $sfx = substr($path, length($filter));
1436                                 if ($sfx !~ /^\/.*\.git$/) {
1437                                         next PROJECT;
1438                                 }
1439                         } elsif ($check_forks) {
1440                         PATH:
1441                                 foreach my $filter (keys %paths) {
1442                                         # looking for forks;
1443                                         my $pfx = substr($path, 0, length($filter));
1444                                         if ($pfx ne $filter) {
1445                                                 next PATH;
1446                                         }
1447                                         my $sfx = substr($path, length($filter));
1448                                         if ($sfx !~ /^\/.*\.git$/) {
1449                                                 next PATH;
1450                                         }
1451                                         # is a fork, don't include it in
1452                                         # the list
1453                                         next PROJECT;
1454                                 }
1455                         }
1456                         if (check_export_ok("$projectroot/$path")) {
1457                                 my $pr = {
1458                                         path => $path,
1459                                         owner => to_utf8($owner),
1460                                 };
1461                                 push @list, $pr;
1462                                 (my $forks_path = $path) =~ s/\.git$//;
1463                                 $paths{$forks_path}++;
1464                         }
1465                 }
1466                 close $fd;
1467         }
1468         return @list;
1469 }
1470
1471 our $gitweb_project_owner = undef;
1472 sub git_get_project_list_from_file {
1473
1474         return if (defined $gitweb_project_owner);
1475
1476         $gitweb_project_owner = {};
1477         # read from file (url-encoded):
1478         # 'git%2Fgit.git Linus+Torvalds'
1479         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1480         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1481         if (-f $projects_list) {
1482                 open (my $fd , $projects_list);
1483                 while (my $line = <$fd>) {
1484                         chomp $line;
1485                         my ($pr, $ow) = split ' ', $line;
1486                         $pr = unescape($pr);
1487                         $ow = unescape($ow);
1488                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1489                 }
1490                 close $fd;
1491         }
1492 }
1493
1494 sub git_get_project_owner {
1495         my $project = shift;
1496         my $owner;
1497
1498         return undef unless $project;
1499
1500         if (!defined $gitweb_project_owner) {
1501                 git_get_project_list_from_file();
1502         }
1503
1504         if (exists $gitweb_project_owner->{$project}) {
1505                 $owner = $gitweb_project_owner->{$project};
1506         }
1507         if (!defined $owner) {
1508                 $owner = get_file_owner("$projectroot/$project");
1509         }
1510
1511         return $owner;
1512 }
1513
1514 sub git_get_last_activity {
1515         my ($path) = @_;
1516         my $fd;
1517
1518         $git_dir = "$projectroot/$path";
1519         open($fd, "-|", git_cmd(), 'for-each-ref',
1520              '--format=%(committer)',
1521              '--sort=-committerdate',
1522              '--count=1',
1523              'refs/heads') or return;
1524         my $most_recent = <$fd>;
1525         close $fd or return;
1526         if (defined $most_recent &&
1527             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1528                 my $timestamp = $1;
1529                 my $age = time - $timestamp;
1530                 return ($age, age_string($age));
1531         }
1532         return (undef, undef);
1533 }
1534
1535 sub git_get_references {
1536         my $type = shift || "";
1537         my %refs;
1538         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1539         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1540         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1541                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1542                 or return;
1543
1544         while (my $line = <$fd>) {
1545                 chomp $line;
1546                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1547                         if (defined $refs{$1}) {
1548                                 push @{$refs{$1}}, $2;
1549                         } else {
1550                                 $refs{$1} = [ $2 ];
1551                         }
1552                 }
1553         }
1554         close $fd or return;
1555         return \%refs;
1556 }
1557
1558 sub git_get_rev_name_tags {
1559         my $hash = shift || return undef;
1560
1561         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1562                 or return;
1563         my $name_rev = <$fd>;
1564         close $fd;
1565
1566         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1567                 return $1;
1568         } else {
1569                 # catches also '$hash undefined' output
1570                 return undef;
1571         }
1572 }
1573
1574 ## ----------------------------------------------------------------------
1575 ## parse to hash functions
1576
1577 sub parse_date {
1578         my $epoch = shift;
1579         my $tz = shift || "-0000";
1580
1581         my %date;
1582         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1583         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1584         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1585         $date{'hour'} = $hour;
1586         $date{'minute'} = $min;
1587         $date{'mday'} = $mday;
1588         $date{'day'} = $days[$wday];
1589         $date{'month'} = $months[$mon];
1590         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1591                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1592         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1593                              $mday, $months[$mon], $hour ,$min;
1594         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1595                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1596
1597         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1598         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1599         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1600         $date{'hour_local'} = $hour;
1601         $date{'minute_local'} = $min;
1602         $date{'tz_local'} = $tz;
1603         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1604                                   1900+$year, $mon+1, $mday,
1605                                   $hour, $min, $sec, $tz);
1606         return %date;
1607 }
1608
1609 sub parse_tag {
1610         my $tag_id = shift;
1611         my %tag;
1612         my @comment;
1613
1614         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1615         $tag{'id'} = $tag_id;
1616         while (my $line = <$fd>) {
1617                 chomp $line;
1618                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1619                         $tag{'object'} = $1;
1620                 } elsif ($line =~ m/^type (.+)$/) {
1621                         $tag{'type'} = $1;
1622                 } elsif ($line =~ m/^tag (.+)$/) {
1623                         $tag{'name'} = $1;
1624                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1625                         $tag{'author'} = $1;
1626                         $tag{'epoch'} = $2;
1627                         $tag{'tz'} = $3;
1628                 } elsif ($line =~ m/--BEGIN/) {
1629                         push @comment, $line;
1630                         last;
1631                 } elsif ($line eq "") {
1632                         last;
1633                 }
1634         }
1635         push @comment, <$fd>;
1636         $tag{'comment'} = \@comment;
1637         close $fd or return;
1638         if (!defined $tag{'name'}) {
1639                 return
1640         };
1641         return %tag
1642 }
1643
1644 sub parse_commit_text {
1645         my ($commit_text, $withparents) = @_;
1646         my @commit_lines = split '\n', $commit_text;
1647         my %co;
1648
1649         pop @commit_lines; # Remove '\0'
1650
1651         if (! @commit_lines) {
1652                 return;
1653         }
1654
1655         my $header = shift @commit_lines;
1656         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1657                 return;
1658         }
1659         ($co{'id'}, my @parents) = split ' ', $header;
1660         while (my $line = shift @commit_lines) {
1661                 last if $line eq "\n";
1662                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1663                         $co{'tree'} = $1;
1664                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1665                         push @parents, $1;
1666                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1667                         $co{'author'} = $1;
1668                         $co{'author_epoch'} = $2;
1669                         $co{'author_tz'} = $3;
1670                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1671                                 $co{'author_name'}  = $1;
1672                                 $co{'author_email'} = $2;
1673                         } else {
1674                                 $co{'author_name'} = $co{'author'};
1675                         }
1676                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1677                         $co{'committer'} = $1;
1678                         $co{'committer_epoch'} = $2;
1679                         $co{'committer_tz'} = $3;
1680                         $co{'committer_name'} = $co{'committer'};
1681                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1682                                 $co{'committer_name'}  = $1;
1683                                 $co{'committer_email'} = $2;
1684                         } else {
1685                                 $co{'committer_name'} = $co{'committer'};
1686                         }
1687                 }
1688         }
1689         if (!defined $co{'tree'}) {
1690                 return;
1691         };
1692         $co{'parents'} = \@parents;
1693         $co{'parent'} = $parents[0];
1694
1695         foreach my $title (@commit_lines) {
1696                 $title =~ s/^    //;
1697                 if ($title ne "") {
1698                         $co{'title'} = chop_str($title, 80, 5);
1699                         # remove leading stuff of merges to make the interesting part visible
1700                         if (length($title) > 50) {
1701                                 $title =~ s/^Automatic //;
1702                                 $title =~ s/^merge (of|with) /Merge ... /i;
1703                                 if (length($title) > 50) {
1704                                         $title =~ s/(http|rsync):\/\///;
1705                                 }
1706                                 if (length($title) > 50) {
1707                                         $title =~ s/(master|www|rsync)\.//;
1708                                 }
1709                                 if (length($title) > 50) {
1710                                         $title =~ s/kernel.org:?//;
1711                                 }
1712                                 if (length($title) > 50) {
1713                                         $title =~ s/\/pub\/scm//;
1714                                 }
1715                         }
1716                         $co{'title_short'} = chop_str($title, 50, 5);
1717                         last;
1718                 }
1719         }
1720         if ($co{'title'} eq "") {
1721                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1722         }
1723         # remove added spaces
1724         foreach my $line (@commit_lines) {
1725                 $line =~ s/^    //;
1726         }
1727         $co{'comment'} = \@commit_lines;
1728
1729         my $age = time - $co{'committer_epoch'};
1730         $co{'age'} = $age;
1731         $co{'age_string'} = age_string($age);
1732         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1733         if ($age > 60*60*24*7*2) {
1734                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1735                 $co{'age_string_age'} = $co{'age_string'};
1736         } else {
1737                 $co{'age_string_date'} = $co{'age_string'};
1738                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1739         }
1740         return %co;
1741 }
1742
1743 sub parse_commit {
1744         my ($commit_id) = @_;
1745         my %co;
1746
1747         local $/ = "\0";
1748
1749         open my $fd, "-|", git_cmd(), "rev-list",
1750                 "--parents",
1751                 "--header",
1752                 "--max-count=1",
1753                 $commit_id,
1754                 "--",
1755                 or die_error(undef, "Open git-rev-list failed");
1756         %co = parse_commit_text(<$fd>, 1);
1757         close $fd;
1758
1759         return %co;
1760 }
1761
1762 sub parse_commits {
1763         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1764         my @cos;
1765
1766         $maxcount ||= 1;
1767         $skip ||= 0;
1768
1769         local $/ = "\0";
1770
1771         open my $fd, "-|", git_cmd(), "rev-list",
1772                 "--header",
1773                 ($arg ? ($arg) : ()),
1774                 ("--max-count=" . $maxcount),
1775                 ("--skip=" . $skip),
1776                 $commit_id,
1777                 "--",
1778                 ($filename ? ($filename) : ())
1779                 or die_error(undef, "Open git-rev-list failed");
1780         while (my $line = <$fd>) {
1781                 my %co = parse_commit_text($line);
1782                 push @cos, \%co;
1783         }
1784         close $fd;
1785
1786         return wantarray ? @cos : \@cos;
1787 }
1788
1789 # parse ref from ref_file, given by ref_id, with given type
1790 sub parse_ref {
1791         my $ref_file = shift;
1792         my $ref_id = shift;
1793         my $type = shift || git_get_type($ref_id);
1794         my %ref_item;
1795
1796         $ref_item{'type'} = $type;
1797         $ref_item{'id'} = $ref_id;
1798         $ref_item{'epoch'} = 0;
1799         $ref_item{'age'} = "unknown";
1800         if ($type eq "tag") {
1801                 my %tag = parse_tag($ref_id);
1802                 $ref_item{'comment'} = $tag{'comment'};
1803                 if ($tag{'type'} eq "commit") {
1804                         my %co = parse_commit($tag{'object'});
1805                         $ref_item{'epoch'} = $co{'committer_epoch'};
1806                         $ref_item{'age'} = $co{'age_string'};
1807                 } elsif (defined($tag{'epoch'})) {
1808                         my $age = time - $tag{'epoch'};
1809                         $ref_item{'epoch'} = $tag{'epoch'};
1810                         $ref_item{'age'} = age_string($age);
1811                 }
1812                 $ref_item{'reftype'} = $tag{'type'};
1813                 $ref_item{'name'} = $tag{'name'};
1814                 $ref_item{'refid'} = $tag{'object'};
1815         } elsif ($type eq "commit"){
1816                 my %co = parse_commit($ref_id);
1817                 $ref_item{'reftype'} = "commit";
1818                 $ref_item{'name'} = $ref_file;
1819                 $ref_item{'title'} = $co{'title'};
1820                 $ref_item{'refid'} = $ref_id;
1821                 $ref_item{'epoch'} = $co{'committer_epoch'};
1822                 $ref_item{'age'} = $co{'age_string'};
1823         } else {
1824                 $ref_item{'reftype'} = $type;
1825                 $ref_item{'name'} = $ref_file;
1826                 $ref_item{'refid'} = $ref_id;
1827         }
1828
1829         return %ref_item;
1830 }
1831
1832 # parse line of git-diff-tree "raw" output
1833 sub parse_difftree_raw_line {
1834         my $line = shift;
1835         my %res;
1836
1837         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1838         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1839         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1840                 $res{'from_mode'} = $1;
1841                 $res{'to_mode'} = $2;
1842                 $res{'from_id'} = $3;
1843                 $res{'to_id'} = $4;
1844                 $res{'status'} = $5;
1845                 $res{'similarity'} = $6;
1846                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1847                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1848                 } else {
1849                         $res{'file'} = unquote($7);
1850                 }
1851         }
1852         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1853         # combined diff (for merge commit)
1854         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1855                 $res{'nparents'}  = length($1);
1856                 $res{'from_mode'} = [ split(' ', $2) ];
1857                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1858                 $res{'from_id'} = [ split(' ', $3) ];
1859                 $res{'to_id'} = pop @{$res{'from_id'}};
1860                 $res{'status'} = [ split('', $4) ];
1861                 $res{'to_file'} = unquote($5);
1862         }
1863         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1864         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1865                 $res{'commit'} = $1;
1866         }
1867
1868         return wantarray ? %res : \%res;
1869 }
1870
1871 # parse line of git-ls-tree output
1872 sub parse_ls_tree_line ($;%) {
1873         my $line = shift;
1874         my %opts = @_;
1875         my %res;
1876
1877         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1878         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1879
1880         $res{'mode'} = $1;
1881         $res{'type'} = $2;
1882         $res{'hash'} = $3;
1883         if ($opts{'-z'}) {
1884                 $res{'name'} = $4;
1885         } else {
1886                 $res{'name'} = unquote($4);
1887         }
1888
1889         return wantarray ? %res : \%res;
1890 }
1891
1892 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1893 sub parse_from_to_diffinfo {
1894         my ($diffinfo, $from, $to, @parents) = @_;
1895
1896         if ($diffinfo->{'nparents'}) {
1897                 # combined diff
1898                 $from->{'file'} = [];
1899                 $from->{'href'} = [];
1900                 fill_from_file_info($diffinfo, @parents)
1901                         unless exists $diffinfo->{'from_file'};
1902                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1903                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1904                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1905                                 $from->{'href'}[$i] = href(action=>"blob",
1906                                                            hash_base=>$parents[$i],
1907                                                            hash=>$diffinfo->{'from_id'}[$i],
1908                                                            file_name=>$from->{'file'}[$i]);
1909                         } else {
1910                                 $from->{'href'}[$i] = undef;
1911                         }
1912                 }
1913         } else {
1914                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1915                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1916                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1917                                                hash=>$diffinfo->{'from_id'},
1918                                                file_name=>$from->{'file'});
1919                 } else {
1920                         delete $from->{'href'};
1921                 }
1922         }
1923
1924         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1925         if (!is_deleted($diffinfo)) { # file exists in result
1926                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1927                                      hash=>$diffinfo->{'to_id'},
1928                                      file_name=>$to->{'file'});
1929         } else {
1930                 delete $to->{'href'};
1931         }
1932 }
1933
1934 ## ......................................................................
1935 ## parse to array of hashes functions
1936
1937 sub git_get_heads_list {
1938         my $limit = shift;
1939         my @headslist;
1940
1941         open my $fd, '-|', git_cmd(), 'for-each-ref',
1942                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1943                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1944                 'refs/heads'
1945                 or return;
1946         while (my $line = <$fd>) {
1947                 my %ref_item;
1948
1949                 chomp $line;
1950                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1951                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1952                 my ($committer, $epoch, $tz) =
1953                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1954                 $name =~ s!^refs/heads/!!;
1955
1956                 $ref_item{'name'}  = $name;
1957                 $ref_item{'id'}    = $hash;
1958                 $ref_item{'title'} = $title || '(no commit message)';
1959                 $ref_item{'epoch'} = $epoch;
1960                 if ($epoch) {
1961                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1962                 } else {
1963                         $ref_item{'age'} = "unknown";
1964                 }
1965
1966                 push @headslist, \%ref_item;
1967         }
1968         close $fd;
1969
1970         return wantarray ? @headslist : \@headslist;
1971 }
1972
1973 sub git_get_tags_list {
1974         my $limit = shift;
1975         my @tagslist;
1976
1977         open my $fd, '-|', git_cmd(), 'for-each-ref',
1978                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1979                 '--format=%(objectname) %(objecttype) %(refname) '.
1980                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1981                 'refs/tags'
1982                 or return;
1983         while (my $line = <$fd>) {
1984                 my %ref_item;
1985
1986                 chomp $line;
1987                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1988                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1989                 my ($creator, $epoch, $tz) =
1990                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1991                 $name =~ s!^refs/tags/!!;
1992
1993                 $ref_item{'type'} = $type;
1994                 $ref_item{'id'} = $id;
1995                 $ref_item{'name'} = $name;
1996                 if ($type eq "tag") {
1997                         $ref_item{'subject'} = $title;
1998                         $ref_item{'reftype'} = $reftype;
1999                         $ref_item{'refid'}   = $refid;
2000                 } else {
2001                         $ref_item{'reftype'} = $type;
2002                         $ref_item{'refid'}   = $id;
2003                 }
2004
2005                 if ($type eq "tag" || $type eq "commit") {
2006                         $ref_item{'epoch'} = $epoch;
2007                         if ($epoch) {
2008                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2009                         } else {
2010                                 $ref_item{'age'} = "unknown";
2011                         }
2012                 }
2013
2014                 push @tagslist, \%ref_item;
2015         }
2016         close $fd;
2017
2018         return wantarray ? @tagslist : \@tagslist;
2019 }
2020
2021 ## ----------------------------------------------------------------------
2022 ## filesystem-related functions
2023
2024 sub get_file_owner {
2025         my $path = shift;
2026
2027         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2028         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2029         if (!defined $gcos) {
2030                 return undef;
2031         }
2032         my $owner = $gcos;
2033         $owner =~ s/[,;].*$//;
2034         return to_utf8($owner);
2035 }
2036
2037 ## ......................................................................
2038 ## mimetype related functions
2039
2040 sub mimetype_guess_file {
2041         my $filename = shift;
2042         my $mimemap = shift;
2043         -r $mimemap or return undef;
2044
2045         my %mimemap;
2046         open(MIME, $mimemap) or return undef;
2047         while (<MIME>) {
2048                 next if m/^#/; # skip comments
2049                 my ($mime, $exts) = split(/\t+/);
2050                 if (defined $exts) {
2051                         my @exts = split(/\s+/, $exts);
2052                         foreach my $ext (@exts) {
2053                                 $mimemap{$ext} = $mime;
2054                         }
2055                 }
2056         }
2057         close(MIME);
2058
2059         $filename =~ /\.([^.]*)$/;
2060         return $mimemap{$1};
2061 }
2062
2063 sub mimetype_guess {
2064         my $filename = shift;
2065         my $mime;
2066         $filename =~ /\./ or return undef;
2067
2068         if ($mimetypes_file) {
2069                 my $file = $mimetypes_file;
2070                 if ($file !~ m!^/!) { # if it is relative path
2071                         # it is relative to project
2072                         $file = "$projectroot/$project/$file";
2073                 }
2074                 $mime = mimetype_guess_file($filename, $file);
2075         }
2076         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2077         return $mime;
2078 }
2079
2080 sub blob_mimetype {
2081         my $fd = shift;
2082         my $filename = shift;
2083
2084         if ($filename) {
2085                 my $mime = mimetype_guess($filename);
2086                 $mime and return $mime;
2087         }
2088
2089         # just in case
2090         return $default_blob_plain_mimetype unless $fd;
2091
2092         if (-T $fd) {
2093                 return 'text/plain' .
2094                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2095         } elsif (! $filename) {
2096                 return 'application/octet-stream';
2097         } elsif ($filename =~ m/\.png$/i) {
2098                 return 'image/png';
2099         } elsif ($filename =~ m/\.gif$/i) {
2100                 return 'image/gif';
2101         } elsif ($filename =~ m/\.jpe?g$/i) {
2102                 return 'image/jpeg';
2103         } else {
2104                 return 'application/octet-stream';
2105         }
2106 }
2107
2108 ## ======================================================================
2109 ## functions printing HTML: header, footer, error page
2110
2111 sub git_header_html {
2112         my $status = shift || "200 OK";
2113         my $expires = shift;
2114
2115         my $title = "$site_name";
2116         if (defined $project) {
2117                 $title .= " - " . to_utf8($project);
2118                 if (defined $action) {
2119                         $title .= "/$action";
2120                         if (defined $file_name) {
2121                                 $title .= " - " . esc_path($file_name);
2122                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2123                                         $title .= "/";
2124                                 }
2125                         }
2126                 }
2127         }
2128         my $content_type;
2129         # require explicit support from the UA if we are to send the page as
2130         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2131         # we have to do this because MSIE sometimes globs '*/*', pretending to
2132         # support xhtml+xml but choking when it gets what it asked for.
2133         if (defined $cgi->http('HTTP_ACCEPT') &&
2134             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2135             $cgi->Accept('application/xhtml+xml') != 0) {
2136                 $content_type = 'application/xhtml+xml';
2137         } else {
2138                 $content_type = 'text/html';
2139         }
2140         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2141                            -status=> $status, -expires => $expires);
2142         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2143         print <<EOF;
2144 <?xml version="1.0" encoding="utf-8"?>
2145 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2146 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2147 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2148 <!-- git core binaries version $git_version -->
2149 <head>
2150 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2151 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2152 <meta name="robots" content="index, nofollow"/>
2153 <title>$title</title>
2154 EOF
2155 # print out each stylesheet that exist
2156         if (defined $stylesheet) {
2157 #provides backwards capability for those people who define style sheet in a config file
2158                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2159         } else {
2160                 foreach my $stylesheet (@stylesheets) {
2161                         next unless $stylesheet;
2162                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2163                 }
2164         }
2165         if (defined $project) {
2166                 printf('<link rel="alternate" title="%s log RSS feed" '.
2167                        'href="%s" type="application/rss+xml" />'."\n",
2168                        esc_param($project), href(action=>"rss"));
2169                 printf('<link rel="alternate" title="%s log Atom feed" '.
2170                        'href="%s" type="application/atom+xml" />'."\n",
2171                        esc_param($project), href(action=>"atom"));
2172         } else {
2173                 printf('<link rel="alternate" title="%s projects list" '.
2174                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2175                        $site_name, href(project=>undef, action=>"project_index"));
2176                 printf('<link rel="alternate" title="%s projects feeds" '.
2177                        'href="%s" type="text/x-opml"/>'."\n",
2178                        $site_name, href(project=>undef, action=>"opml"));
2179         }
2180         if (defined $favicon) {
2181                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2182         }
2183
2184         print "</head>\n" .
2185               "<body>\n";
2186
2187         if (-f $site_header) {
2188                 open (my $fd, $site_header);
2189                 print <$fd>;
2190                 close $fd;
2191         }
2192
2193         print "<div class=\"page_header\">\n" .
2194               $cgi->a({-href => esc_url($logo_url),
2195                        -title => $logo_label},
2196                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2197         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2198         if (defined $project) {
2199                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2200                 if (defined $action) {
2201                         print " / $action";
2202                 }
2203                 print "\n";
2204         }
2205         print "</div>\n";
2206
2207         my ($have_search) = gitweb_check_feature('search');
2208         if ((defined $project) && ($have_search)) {
2209                 if (!defined $searchtext) {
2210                         $searchtext = "";
2211                 }
2212                 my $search_hash;
2213                 if (defined $hash_base) {
2214                         $search_hash = $hash_base;
2215                 } elsif (defined $hash) {
2216                         $search_hash = $hash;
2217                 } else {
2218                         $search_hash = "HEAD";
2219                 }
2220                 my $action = $my_uri;
2221                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2222                 if ($use_pathinfo) {
2223                         $action .= "/$project";
2224                 } else {
2225                         $cgi->param("p", $project);
2226                 }
2227                 $cgi->param("a", "search");
2228                 $cgi->param("h", $search_hash);
2229                 print $cgi->startform(-method => "get", -action => $action) .
2230                       "<div class=\"search\">\n" .
2231                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2232                       $cgi->hidden(-name => "a") . "\n" .
2233                       $cgi->hidden(-name => "h") . "\n" .
2234                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2235                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2236                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2237                       " search:\n",
2238                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2239                       "</div>" .
2240                       $cgi->end_form() . "\n";
2241         }
2242 }
2243
2244 sub git_footer_html {
2245         print "<div class=\"page_footer\">\n";
2246         if (defined $project) {
2247                 my $descr = git_get_project_description($project);
2248                 if (defined $descr) {
2249                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2250                 }
2251                 print $cgi->a({-href => href(action=>"rss"),
2252                               -class => "rss_logo"}, "RSS") . " ";
2253                 print $cgi->a({-href => href(action=>"atom"),
2254                               -class => "rss_logo"}, "Atom") . "\n";
2255         } else {
2256                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2257                               -class => "rss_logo"}, "OPML") . " ";
2258                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2259                               -class => "rss_logo"}, "TXT") . "\n";
2260         }
2261         print "</div>\n" ;
2262
2263         if (-f $site_footer) {
2264                 open (my $fd, $site_footer);
2265                 print <$fd>;
2266                 close $fd;
2267         }
2268
2269         print "</body>\n" .
2270               "</html>";
2271 }
2272
2273 sub die_error {
2274         my $status = shift || "403 Forbidden";
2275         my $error = shift || "Malformed query, file missing or permission denied";
2276
2277         git_header_html($status);
2278         print <<EOF;
2279 <div class="page_body">
2280 <br /><br />
2281 $status - $error
2282 <br />
2283 </div>
2284 EOF
2285         git_footer_html();
2286         exit;
2287 }
2288
2289 ## ----------------------------------------------------------------------
2290 ## functions printing or outputting HTML: navigation
2291
2292 sub git_print_page_nav {
2293         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2294         $extra = '' if !defined $extra; # pager or formats
2295
2296         my @navs = qw(summary shortlog log commit commitdiff tree);
2297         if ($suppress) {
2298                 @navs = grep { $_ ne $suppress } @navs;
2299         }
2300
2301         my %arg = map { $_ => {action=>$_} } @navs;
2302         if (defined $head) {
2303                 for (qw(commit commitdiff)) {
2304                         $arg{$_}{'hash'} = $head;
2305                 }
2306                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2307                         for (qw(shortlog log)) {
2308                                 $arg{$_}{'hash'} = $head;
2309                         }
2310                 }
2311         }
2312         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2313         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2314
2315         print "<div class=\"page_nav\">\n" .
2316                 (join " | ",
2317                  map { $_ eq $current ?
2318                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2319                  } @navs);
2320         print "<br/>\n$extra<br/>\n" .
2321               "</div>\n";
2322 }
2323
2324 sub format_paging_nav {
2325         my ($action, $hash, $head, $page, $nrevs) = @_;
2326         my $paging_nav;
2327
2328
2329         if ($hash ne $head || $page) {
2330                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2331         } else {
2332                 $paging_nav .= "HEAD";
2333         }
2334
2335         if ($page > 0) {
2336                 $paging_nav .= " &sdot; " .
2337                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2338                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2339         } else {
2340                 $paging_nav .= " &sdot; prev";
2341         }
2342
2343         if ($nrevs >= (100 * ($page+1)-1)) {
2344                 $paging_nav .= " &sdot; " .
2345                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2346                                  -accesskey => "n", -title => "Alt-n"}, "next");
2347         } else {
2348                 $paging_nav .= " &sdot; next";
2349         }
2350
2351         return $paging_nav;
2352 }
2353
2354 ## ......................................................................
2355 ## functions printing or outputting HTML: div
2356
2357 sub git_print_header_div {
2358         my ($action, $title, $hash, $hash_base) = @_;
2359         my %args = ();
2360
2361         $args{'action'} = $action;
2362         $args{'hash'} = $hash if $hash;
2363         $args{'hash_base'} = $hash_base if $hash_base;
2364
2365         print "<div class=\"header\">\n" .
2366               $cgi->a({-href => href(%args), -class => "title"},
2367               $title ? $title : $action) .
2368               "\n</div>\n";
2369 }
2370
2371 #sub git_print_authorship (\%) {
2372 sub git_print_authorship {
2373         my $co = shift;
2374
2375         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2376         print "<div class=\"author_date\">" .
2377               esc_html($co->{'author_name'}) .
2378               " [$ad{'rfc2822'}";
2379         if ($ad{'hour_local'} < 6) {
2380                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2381                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2382         } else {
2383                 printf(" (%02d:%02d %s)",
2384                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2385         }
2386         print "]</div>\n";
2387 }
2388
2389 sub git_print_page_path {
2390         my $name = shift;
2391         my $type = shift;
2392         my $hb = shift;
2393
2394
2395         print "<div class=\"page_path\">";
2396         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2397                       -title => 'tree root'}, to_utf8("[$project]"));
2398         print " / ";
2399         if (defined $name) {
2400                 my @dirname = split '/', $name;
2401                 my $basename = pop @dirname;
2402                 my $fullname = '';
2403
2404                 foreach my $dir (@dirname) {
2405                         $fullname .= ($fullname ? '/' : '') . $dir;
2406                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2407                                                      hash_base=>$hb),
2408                                       -title => $fullname}, esc_path($dir));
2409                         print " / ";
2410                 }
2411                 if (defined $type && $type eq 'blob') {
2412                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2413                                                      hash_base=>$hb),
2414                                       -title => $name}, esc_path($basename));
2415                 } elsif (defined $type && $type eq 'tree') {
2416                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2417                                                      hash_base=>$hb),
2418                                       -title => $name}, esc_path($basename));
2419                         print " / ";
2420                 } else {
2421                         print esc_path($basename);
2422                 }
2423         }
2424         print "<br/></div>\n";
2425 }
2426
2427 # sub git_print_log (\@;%) {
2428 sub git_print_log ($;%) {
2429         my $log = shift;
2430         my %opts = @_;
2431
2432         if ($opts{'-remove_title'}) {
2433                 # remove title, i.e. first line of log
2434                 shift @$log;
2435         }
2436         # remove leading empty lines
2437         while (defined $log->[0] && $log->[0] eq "") {
2438                 shift @$log;
2439         }
2440
2441         # print log
2442         my $signoff = 0;
2443         my $empty = 0;
2444         foreach my $line (@$log) {
2445                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2446                         $signoff = 1;
2447                         $empty = 0;
2448                         if (! $opts{'-remove_signoff'}) {
2449                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2450                                 next;
2451                         } else {
2452                                 # remove signoff lines
2453                                 next;
2454                         }
2455                 } else {
2456                         $signoff = 0;
2457                 }
2458
2459                 # print only one empty line
2460                 # do not print empty line after signoff
2461                 if ($line eq "") {
2462                         next if ($empty || $signoff);
2463                         $empty = 1;
2464                 } else {
2465                         $empty = 0;
2466                 }
2467
2468                 print format_log_line_html($line) . "<br/>\n";
2469         }
2470
2471         if ($opts{'-final_empty_line'}) {
2472                 # end with single empty line
2473                 print "<br/>\n" unless $empty;
2474         }
2475 }
2476
2477 # return link target (what link points to)
2478 sub git_get_link_target {
2479         my $hash = shift;
2480         my $link_target;
2481
2482         # read link
2483         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2484                 or return;
2485         {
2486                 local $/;
2487                 $link_target = <$fd>;
2488         }
2489         close $fd
2490                 or return;
2491
2492         return $link_target;
2493 }
2494
2495 # given link target, and the directory (basedir) the link is in,
2496 # return target of link relative to top directory (top tree);
2497 # return undef if it is not possible (including absolute links).
2498 sub normalize_link_target {
2499         my ($link_target, $basedir, $hash_base) = @_;
2500
2501         # we can normalize symlink target only if $hash_base is provided
2502         return unless $hash_base;
2503
2504         # absolute symlinks (beginning with '/') cannot be normalized
2505         return if (substr($link_target, 0, 1) eq '/');
2506
2507         # normalize link target to path from top (root) tree (dir)
2508         my $path;
2509         if ($basedir) {
2510                 $path = $basedir . '/' . $link_target;
2511         } else {
2512                 # we are in top (root) tree (dir)
2513                 $path = $link_target;
2514         }
2515
2516         # remove //, /./, and /../
2517         my @path_parts;
2518         foreach my $part (split('/', $path)) {
2519                 # discard '.' and ''
2520                 next if (!$part || $part eq '.');
2521                 # handle '..'
2522                 if ($part eq '..') {
2523                         if (@path_parts) {
2524                                 pop @path_parts;
2525                         } else {
2526                                 # link leads outside repository (outside top dir)
2527                                 return;
2528                         }
2529                 } else {
2530                         push @path_parts, $part;
2531                 }
2532         }
2533         $path = join('/', @path_parts);
2534
2535         return $path;
2536 }
2537
2538 # print tree entry (row of git_tree), but without encompassing <tr> element
2539 sub git_print_tree_entry {
2540         my ($t, $basedir, $hash_base, $have_blame) = @_;
2541
2542         my %base_key = ();
2543         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2544
2545         # The format of a table row is: mode list link.  Where mode is
2546         # the mode of the entry, list is the name of the entry, an href,
2547         # and link is the action links of the entry.
2548
2549         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2550         if ($t->{'type'} eq "blob") {
2551                 print "<td class=\"list\">" .
2552                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2553                                                file_name=>"$basedir$t->{'name'}", %base_key),
2554                                 -class => "list"}, esc_path($t->{'name'}));
2555                 if (S_ISLNK(oct $t->{'mode'})) {
2556                         my $link_target = git_get_link_target($t->{'hash'});
2557                         if ($link_target) {
2558                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2559                                 if (defined $norm_target) {
2560                                         print " -> " .
2561                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2562                                                                      file_name=>$norm_target),
2563                                                        -title => $norm_target}, esc_path($link_target));
2564                                 } else {
2565                                         print " -> " . esc_path($link_target);
2566                                 }
2567                         }
2568                 }
2569                 print "</td>\n";
2570                 print "<td class=\"link\">";
2571                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2572                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2573                               "blob");
2574                 if ($have_blame) {
2575                         print " | " .
2576                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2577                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2578                                       "blame");
2579                 }
2580                 if (defined $hash_base) {
2581                         print " | " .
2582                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2583                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2584                                       "history");
2585                 }
2586                 print " | " .
2587                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2588                                                file_name=>"$basedir$t->{'name'}")},
2589                                 "raw");
2590                 print "</td>\n";
2591
2592         } elsif ($t->{'type'} eq "tree") {
2593                 print "<td class=\"list\">";
2594                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2595                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2596                               esc_path($t->{'name'}));
2597                 print "</td>\n";
2598                 print "<td class=\"link\">";
2599                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2600                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2601                               "tree");
2602                 if (defined $hash_base) {
2603                         print " | " .
2604                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2605                                                      file_name=>"$basedir$t->{'name'}")},
2606                                       "history");
2607                 }
2608                 print "</td>\n";
2609         }
2610 }
2611
2612 ## ......................................................................
2613 ## functions printing large fragments of HTML
2614
2615 sub fill_from_file_info {
2616         my ($diff, @parents) = @_;
2617
2618         $diff->{'from_file'} = [ ];
2619         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2620         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2621                 if ($diff->{'status'}[$i] eq 'R' ||
2622                     $diff->{'status'}[$i] eq 'C') {
2623                         $diff->{'from_file'}[$i] =
2624                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2625                 }
2626         }
2627
2628         return $diff;
2629 }
2630
2631 # parameters can be strings, or references to arrays of strings
2632 sub from_ids_eq {
2633         my ($a, $b) = @_;
2634
2635         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2636                 for (my $i = 0; $i < @$a; ++$i) {
2637                         return 0 unless ($a->[$i] eq $b->[$i]);
2638                 }
2639                 return 1;
2640         } elsif (!ref($a) && !ref($b)) {
2641                 return $a eq $b;
2642         } else {
2643                 return 0;
2644         }
2645 }
2646
2647 sub is_deleted {
2648         my $diffinfo = shift;
2649
2650         return $diffinfo->{'to_id'} eq ('0' x 40);
2651 }
2652
2653 sub git_difftree_body {
2654         my ($difftree, $hash, @parents) = @_;
2655         my ($parent) = $parents[0];
2656         my ($have_blame) = gitweb_check_feature('blame');
2657         print "<div class=\"list_head\">\n";
2658         if ($#{$difftree} > 10) {
2659                 print(($#{$difftree} + 1) . " files changed:\n");
2660         }
2661         print "</div>\n";
2662
2663         print "<table class=\"" .
2664               (@parents > 1 ? "combined " : "") .
2665               "diff_tree\">\n";
2666
2667         # header only for combined diff in 'commitdiff' view
2668         my $has_header = @parents > 1 && $action eq 'commitdiff';
2669         if ($has_header) {
2670                 # table header
2671                 print "<thead><tr>\n" .
2672                        "<th></th><th></th>\n"; # filename, patchN link
2673                 for (my $i = 0; $i < @parents; $i++) {
2674                         my $par = $parents[$i];
2675                         print "<th>" .
2676                               $cgi->a({-href => href(action=>"commitdiff",
2677                                                      hash=>$hash, hash_parent=>$par),
2678                                        -title => 'commitdiff to parent number ' .
2679                                                   ($i+1) . ': ' . substr($par,0,7)},
2680                                       $i+1) .
2681                               "&nbsp;</th>\n";
2682                 }
2683                 print "</tr></thead>\n<tbody>\n";
2684         }
2685
2686         my $alternate = 1;
2687         my $patchno = 0;
2688         foreach my $line (@{$difftree}) {
2689                 my $diff;
2690                 if (ref($line) eq "HASH") {
2691                         # pre-parsed (or generated by hand)
2692                         $diff = $line;
2693                 } else {
2694                         $diff = parse_difftree_raw_line($line);
2695                 }
2696
2697                 if ($alternate) {
2698                         print "<tr class=\"dark\">\n";
2699                 } else {
2700                         print "<tr class=\"light\">\n";
2701                 }
2702                 $alternate ^= 1;
2703
2704                 if (exists $diff->{'nparents'}) { # combined diff
2705
2706                         fill_from_file_info($diff, @parents)
2707                                 unless exists $diff->{'from_file'};
2708
2709                         if (!is_deleted($diff)) {
2710                                 # file exists in the result (child) commit
2711                                 print "<td>" .
2712                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2713                                                              file_name=>$diff->{'to_file'},
2714                                                              hash_base=>$hash),
2715                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2716                                       "</td>\n";
2717                         } else {
2718                                 print "<td>" .
2719                                       esc_path($diff->{'to_file'}) .
2720                                       "</td>\n";
2721                         }
2722
2723                         if ($action eq 'commitdiff') {
2724                                 # link to patch
2725                                 $patchno++;
2726                                 print "<td class=\"link\">" .
2727                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2728                                       " | " .
2729                                       "</td>\n";
2730                         }
2731
2732                         my $has_history = 0;
2733                         my $not_deleted = 0;
2734                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2735                                 my $hash_parent = $parents[$i];
2736                                 my $from_hash = $diff->{'from_id'}[$i];
2737                                 my $from_path = $diff->{'from_file'}[$i];
2738                                 my $status = $diff->{'status'}[$i];
2739
2740                                 $has_history ||= ($status ne 'A');
2741                                 $not_deleted ||= ($status ne 'D');
2742
2743                                 if ($status eq 'A') {
2744                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2745                                 } elsif ($status eq 'D') {
2746                                         print "<td class=\"link\">" .
2747                                               $cgi->a({-href => href(action=>"blob",
2748                                                                      hash_base=>$hash,
2749                                                                      hash=>$from_hash,
2750                                                                      file_name=>$from_path)},
2751                                                       "blob" . ($i+1)) .
2752                                               " | </td>\n";
2753                                 } else {
2754                                         if ($diff->{'to_id'} eq $from_hash) {
2755                                                 print "<td class=\"link nochange\">";
2756                                         } else {
2757                                                 print "<td class=\"link\">";
2758                                         }
2759                                         print $cgi->a({-href => href(action=>"blobdiff",
2760                                                                      hash=>$diff->{'to_id'},
2761                                                                      hash_parent=>$from_hash,
2762                                                                      hash_base=>$hash,
2763                                                                      hash_parent_base=>$hash_parent,
2764                                                                      file_name=>$diff->{'to_file'},
2765                                                                      file_parent=>$from_path)},
2766                                                       "diff" . ($i+1)) .
2767                                               " | </td>\n";
2768                                 }
2769                         }
2770
2771                         print "<td class=\"link\">";
2772                         if ($not_deleted) {
2773                                 print $cgi->a({-href => href(action=>"blob",
2774                                                              hash=>$diff->{'to_id'},
2775                                                              file_name=>$diff->{'to_file'},
2776                                                              hash_base=>$hash)},
2777                                               "blob");
2778                                 print " | " if ($has_history);
2779                         }
2780                         if ($has_history) {
2781                                 print $cgi->a({-href => href(action=>"history",
2782                                                              file_name=>$diff->{'to_file'},
2783                                                              hash_base=>$hash)},
2784                                               "history");
2785                         }
2786                         print "</td>\n";
2787
2788                         print "</tr>\n";
2789                         next; # instead of 'else' clause, to avoid extra indent
2790                 }
2791                 # else ordinary diff
2792
2793                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2794                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2795                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2796                         $to_mode_oct = oct $diff->{'to_mode'};
2797                         if (S_ISREG($to_mode_oct)) { # only for regular file
2798                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2799                         }
2800                         $to_file_type = file_type($diff->{'to_mode'});
2801                 }
2802                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2803                         $from_mode_oct = oct $diff->{'from_mode'};
2804                         if (S_ISREG($to_mode_oct)) { # only for regular file
2805                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2806                         }
2807                         $from_file_type = file_type($diff->{'from_mode'});
2808                 }
2809
2810                 if ($diff->{'status'} eq "A") { # created
2811                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2812                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2813                         $mode_chng   .= "]</span>";
2814                         print "<td>";
2815                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2816                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2817                                       -class => "list"}, esc_path($diff->{'file'}));
2818                         print "</td>\n";
2819                         print "<td>$mode_chng</td>\n";
2820                         print "<td class=\"link\">";
2821                         if ($action eq 'commitdiff') {
2822                                 # link to patch
2823                                 $patchno++;
2824                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2825                                 print " | ";
2826                         }
2827                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2828                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2829                                       "blob");
2830                         print "</td>\n";
2831
2832                 } elsif ($diff->{'status'} eq "D") { # deleted
2833                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2834                         print "<td>";
2835                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2836                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2837                                        -class => "list"}, esc_path($diff->{'file'}));
2838                         print "</td>\n";
2839                         print "<td>$mode_chng</td>\n";
2840                         print "<td class=\"link\">";
2841                         if ($action eq 'commitdiff') {
2842                                 # link to patch
2843                                 $patchno++;
2844                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2845                                 print " | ";
2846                         }
2847                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2848                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2849                                       "blob") . " | ";
2850                         if ($have_blame) {
2851                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2852                                                              file_name=>$diff->{'file'})},
2853                                               "blame") . " | ";
2854                         }
2855                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2856                                                      file_name=>$diff->{'file'})},
2857                                       "history");
2858                         print "</td>\n";
2859
2860                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2861                         my $mode_chnge = "";
2862                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2863                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2864                                 if ($from_file_type ne $to_file_type) {
2865                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2866                                 }
2867                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2868                                         if ($from_mode_str && $to_mode_str) {
2869                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2870                                         } elsif ($to_mode_str) {
2871                                                 $mode_chnge .= " mode: $to_mode_str";
2872                                         }
2873                                 }
2874                                 $mode_chnge .= "]</span>\n";
2875                         }
2876                         print "<td>";
2877                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2878                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2879                                       -class => "list"}, esc_path($diff->{'file'}));
2880                         print "</td>\n";
2881                         print "<td>$mode_chnge</td>\n";
2882                         print "<td class=\"link\">";
2883                         if ($action eq 'commitdiff') {
2884                                 # link to patch
2885                                 $patchno++;
2886                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2887                                       " | ";
2888                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2889                                 # "commit" view and modified file (not onlu mode changed)
2890                                 print $cgi->a({-href => href(action=>"blobdiff",
2891                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2892                                                              hash_base=>$hash, hash_parent_base=>$parent,
2893                                                              file_name=>$diff->{'file'})},
2894                                               "diff") .
2895                                       " | ";
2896                         }
2897                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2898                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2899                                        "blob") . " | ";
2900                         if ($have_blame) {
2901                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2902                                                              file_name=>$diff->{'file'})},
2903                                               "blame") . " | ";
2904                         }
2905                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2906                                                      file_name=>$diff->{'file'})},
2907                                       "history");
2908                         print "</td>\n";
2909
2910                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2911                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2912                         my $nstatus = $status_name{$diff->{'status'}};
2913                         my $mode_chng = "";
2914                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2915                                 # mode also for directories, so we cannot use $to_mode_str
2916                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2917                         }
2918                         print "<td>" .
2919                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2920                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2921                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2922                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2923                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2924                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2925                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2926                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2927                               "<td class=\"link\">";
2928                         if ($action eq 'commitdiff') {
2929                                 # link to patch
2930                                 $patchno++;
2931                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2932                                       " | ";
2933                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2934                                 # "commit" view and modified file (not only pure rename or copy)
2935                                 print $cgi->a({-href => href(action=>"blobdiff",
2936                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2937                                                              hash_base=>$hash, hash_parent_base=>$parent,
2938                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2939                                               "diff") .
2940                                       " | ";
2941                         }
2942                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2943                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2944                                       "blob") . " | ";
2945                         if ($have_blame) {
2946                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2947                                                              file_name=>$diff->{'to_file'})},
2948                                               "blame") . " | ";
2949                         }
2950                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2951                                                     file_name=>$diff->{'to_file'})},
2952                                       "history");
2953                         print "</td>\n";
2954
2955                 } # we should not encounter Unmerged (U) or Unknown (X) status
2956                 print "</tr>\n";
2957         }
2958         print "</tbody>" if $has_header;
2959         print "</table>\n";
2960 }
2961
2962 sub git_patchset_body {
2963         my ($fd, $difftree, $hash, @hash_parents) = @_;
2964         my ($hash_parent) = $hash_parents[0];
2965
2966         my $patch_idx = 0;
2967         my $patch_number = 0;
2968         my $patch_line;
2969         my $diffinfo;
2970         my (%from, %to);
2971
2972         print "<div class=\"patchset\">\n";
2973
2974         # skip to first patch
2975         while ($patch_line = <$fd>) {
2976                 chomp $patch_line;
2977
2978                 last if ($patch_line =~ m/^diff /);
2979         }
2980
2981  PATCH:
2982         while ($patch_line) {
2983                 my @diff_header;
2984                 my ($from_id, $to_id);
2985
2986                 # git diff header
2987                 #assert($patch_line =~ m/^diff /) if DEBUG;
2988                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2989                 $patch_number++;
2990                 push @diff_header, $patch_line;
2991
2992                 # extended diff header
2993         EXTENDED_HEADER:
2994                 while ($patch_line = <$fd>) {
2995                         chomp $patch_line;
2996
2997                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2998
2999                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3000                                 $from_id = $1;
3001                                 $to_id   = $2;
3002                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3003                                 $from_id = [ split(',', $1) ];
3004                                 $to_id   = $2;
3005                         }
3006
3007                         push @diff_header, $patch_line;
3008                 }
3009                 my $last_patch_line = $patch_line;
3010
3011                 # check if current patch belong to current raw line
3012                 # and parse raw git-diff line if needed
3013                 if (defined $diffinfo &&
3014                     defined $from_id && defined $to_id &&
3015                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3016                     $diffinfo->{'to_id'} eq $to_id) {
3017                         # this is continuation of a split patch
3018                         print "<div class=\"patch cont\">\n";
3019                 } else {
3020                         # advance raw git-diff output if needed
3021                         $patch_idx++ if defined $diffinfo;
3022
3023                         # compact combined diff output can have some patches skipped
3024                         # find which patch (using pathname of result) we are at now
3025                         my $to_name;
3026                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3027                                 $to_name = $1;
3028                         }
3029
3030                         do {
3031                                 # read and prepare patch information
3032                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3033                                         # pre-parsed (or generated by hand)
3034                                         $diffinfo = $difftree->[$patch_idx];
3035                                 } else {
3036                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3037                                 }
3038
3039                                 # check if current raw line has no patch (it got simplified)
3040                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3041                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3042                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3043                                               "</div>\n";  # class="patch"
3044
3045                                         $patch_idx++;
3046                                         $patch_number++;
3047                                 }
3048                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3049                                  $patch_idx > $#$difftree);
3050                         # modifies %from, %to hashes
3051                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3052                         if ($diffinfo->{'nparents'}) {
3053                                 # combined diff
3054                                 $from{'file'} = [];
3055                                 $from{'href'} = [];
3056                                 fill_from_file_info($diffinfo, @hash_parents)
3057                                         unless exists $diffinfo->{'from_file'};
3058                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3059                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3060                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3061                                                 $from{'href'}[$i] = href(action=>"blob",
3062                                                                          hash_base=>$hash_parents[$i],
3063                                                                          hash=>$diffinfo->{'from_id'}[$i],
3064                                                                          file_name=>$from{'file'}[$i]);
3065                                         } else {
3066                                                 $from{'href'}[$i] = undef;
3067                                         }
3068                                 }
3069                         } else {
3070                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3071                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3072                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3073                                                              hash=>$diffinfo->{'from_id'},
3074                                                              file_name=>$from{'file'});
3075                                 } else {
3076                                         delete $from{'href'};
3077                                 }
3078                         }
3079
3080                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3081                         if (!is_deleted($diffinfo)) { # file exists in result
3082                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3083                                                    hash=>$diffinfo->{'to_id'},
3084                                                    file_name=>$to{'file'});
3085                         } else {
3086                                 delete $to{'href'};
3087                         }
3088                         # this is first patch for raw difftree line with $patch_idx index
3089                         # we index @$difftree array from 0, but number patches from 1
3090                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3091                 }
3092
3093                 # print "git diff" header
3094                 $patch_line = shift @diff_header;
3095                 print format_git_diff_header_line($patch_line, $diffinfo,
3096                                                   \%from, \%to);
3097
3098                 # print extended diff header
3099                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3100         EXTENDED_HEADER:
3101                 foreach $patch_line (@diff_header) {
3102                         print format_extended_diff_header_line($patch_line, $diffinfo,
3103                                                                \%from, \%to);
3104                 }
3105                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3106
3107                 # from-file/to-file diff header
3108                 $patch_line = $last_patch_line;
3109                 if (! $patch_line) {
3110                         print "</div>\n"; # class="patch"
3111                         last PATCH;
3112                 }
3113                 next PATCH if ($patch_line =~ m/^diff /);
3114                 #assert($patch_line =~ m/^---/) if DEBUG;
3115                 #assert($patch_line eq $last_patch_line) if DEBUG;
3116
3117                 $patch_line = <$fd>;
3118                 chomp $patch_line;
3119                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3120
3121                 print format_diff_from_to_header($last_patch_line, $patch_line,
3122                                                  $diffinfo, \%from, \%to,
3123                                                  @hash_parents);
3124
3125                 # the patch itself
3126         LINE:
3127                 while ($patch_line = <$fd>) {
3128                         chomp $patch_line;
3129
3130                         next PATCH if ($patch_line =~ m/^diff /);
3131
3132                         print format_diff_line($patch_line, \%from, \%to);
3133                 }
3134
3135         } continue {
3136                 print "</div>\n"; # class="patch"
3137         }
3138
3139         # for compact combined (--cc) format, with chunk and patch simpliciaction
3140         # patchset might be empty, but there might be unprocessed raw lines
3141         for ($patch_idx++ if $patch_number > 0;
3142              $patch_idx < @$difftree;
3143              $patch_idx++) {
3144                 # read and prepare patch information
3145                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3146                         # pre-parsed (or generated by hand)
3147                         $diffinfo = $difftree->[$patch_idx];
3148                 } else {
3149                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3150                 }
3151
3152                 # generate anchor for "patch" links in difftree / whatchanged part
3153                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3154                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3155                       "</div>\n";  # class="patch"
3156
3157                 $patch_number++;
3158         }
3159
3160         if ($patch_number == 0) {
3161                 if (@hash_parents > 1) {
3162                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3163                 } else {
3164                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3165                 }
3166         }
3167
3168         print "</div>\n"; # class="patchset"
3169 }
3170
3171 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3172
3173 sub git_project_list_body {
3174         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3175
3176         my ($check_forks) = gitweb_check_feature('forks');
3177
3178         my @projects;
3179         foreach my $pr (@$projlist) {
3180                 my (@aa) = git_get_last_activity($pr->{'path'});
3181                 unless (@aa) {
3182                         next;
3183                 }
3184                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3185                 if (!defined $pr->{'descr'}) {
3186                         my $descr = git_get_project_description($pr->{'path'}) || "";
3187                         $pr->{'descr_long'} = to_utf8($descr);
3188                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3189                 }
3190                 if (!defined $pr->{'owner'}) {
3191                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3192                 }
3193                 if ($check_forks) {
3194                         my $pname = $pr->{'path'};
3195                         if (($pname =~ s/\.git$//) &&
3196                             ($pname !~ /\/$/) &&
3197                             (-d "$projectroot/$pname")) {
3198                                 $pr->{'forks'} = "-d $projectroot/$pname";
3199                         }
3200                         else {
3201                                 $pr->{'forks'} = 0;
3202                         }
3203                 }
3204                 push @projects, $pr;
3205         }
3206
3207         $order ||= $default_projects_order;
3208         $from = 0 unless defined $from;
3209         $to = $#projects if (!defined $to || $#projects < $to);
3210
3211         print "<table class=\"project_list\">\n";
3212         unless ($no_header) {
3213                 print "<tr>\n";
3214                 if ($check_forks) {
3215                         print "<th></th>\n";
3216                 }
3217                 if ($order eq "project") {
3218                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3219                         print "<th>Project</th>\n";
3220                 } else {
3221                         print "<th>" .
3222                               $cgi->a({-href => href(project=>undef, order=>'project'),
3223                                        -class => "header"}, "Project") .
3224                               "</th>\n";
3225                 }
3226                 if ($order eq "descr") {
3227                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3228                         print "<th>Description</th>\n";
3229                 } else {
3230                         print "<th>" .
3231                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3232                                        -class => "header"}, "Description") .
3233                               "</th>\n";
3234                 }
3235                 if ($order eq "owner") {
3236                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3237                         print "<th>Owner</th>\n";
3238                 } else {
3239                         print "<th>" .
3240                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3241                                        -class => "header"}, "Owner") .
3242                               "</th>\n";
3243                 }
3244                 if ($order eq "age") {
3245                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3246                         print "<th>Last Change</th>\n";
3247                 } else {
3248                         print "<th>" .
3249                               $cgi->a({-href => href(project=>undef, order=>'age'),
3250                                        -class => "header"}, "Last Change") .
3251                               "</th>\n";
3252                 }
3253                 print "<th></th>\n" .
3254                       "</tr>\n";
3255         }
3256         my $alternate = 1;
3257         for (my $i = $from; $i <= $to; $i++) {
3258                 my $pr = $projects[$i];
3259                 if ($alternate) {
3260                         print "<tr class=\"dark\">\n";
3261                 } else {
3262                         print "<tr class=\"light\">\n";
3263                 }
3264                 $alternate ^= 1;
3265                 if ($check_forks) {
3266                         print "<td>";
3267                         if ($pr->{'forks'}) {
3268                                 print "<!-- $pr->{'forks'} -->\n";
3269                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3270                         }
3271                         print "</td>\n";
3272                 }
3273                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3274                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3275                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3276                                         -class => "list", -title => $pr->{'descr_long'}},
3277                                         esc_html($pr->{'descr'})) . "</td>\n" .
3278                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3279                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3280                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3281                       "<td class=\"link\">" .
3282                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3283                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3284                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3285                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3286                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3287                       "</td>\n" .
3288                       "</tr>\n";
3289         }
3290         if (defined $extra) {
3291                 print "<tr>\n";
3292                 if ($check_forks) {
3293                         print "<td></td>\n";
3294                 }
3295                 print "<td colspan=\"5\">$extra</td>\n" .
3296                       "</tr>\n";
3297         }
3298         print "</table>\n";
3299 }
3300
3301 sub git_shortlog_body {
3302         # uses global variable $project
3303         my ($commitlist, $from, $to, $refs, $extra) = @_;
3304
3305         my $have_snapshot = gitweb_have_snapshot();
3306
3307         $from = 0 unless defined $from;
3308         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3309
3310         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3311         my $alternate = 1;
3312         for (my $i = $from; $i <= $to; $i++) {
3313                 my %co = %{$commitlist->[$i]};
3314                 my $commit = $co{'id'};
3315                 my $ref = format_ref_marker($refs, $commit);
3316                 if ($alternate) {
3317                         print "<tr class=\"dark\">\n";
3318                 } else {
3319                         print "<tr class=\"light\">\n";
3320                 }
3321                 $alternate ^= 1;
3322                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3323                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3324                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3325                       "<td>";
3326                 print format_subject_html($co{'title'}, $co{'title_short'},
3327                                           href(action=>"commit", hash=>$commit), $ref);
3328                 print "</td>\n" .
3329                       "<td class=\"link\">" .
3330                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3331                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3332                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3333                 if ($have_snapshot) {
3334                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3335                 }
3336                 print "</td>\n" .
3337                       "</tr>\n";
3338         }
3339         if (defined $extra) {
3340                 print "<tr>\n" .
3341                       "<td colspan=\"4\">$extra</td>\n" .
3342                       "</tr>\n";
3343         }
3344         print "</table>\n";
3345 }
3346
3347 sub git_history_body {
3348         # Warning: assumes constant type (blob or tree) during history
3349         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3350
3351         $from = 0 unless defined $from;
3352         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3353
3354         print "<table class=\"history\" cellspacing=\"0\">\n";
3355         my $alternate = 1;
3356         for (my $i = $from; $i <= $to; $i++) {
3357                 my %co = %{$commitlist->[$i]};
3358                 if (!%co) {
3359                         next;
3360                 }
3361                 my $commit = $co{'id'};
3362
3363                 my $ref = format_ref_marker($refs, $commit);
3364
3365                 if ($alternate) {
3366                         print "<tr class=\"dark\">\n";
3367                 } else {
3368                         print "<tr class=\"light\">\n";
3369                 }
3370                 $alternate ^= 1;
3371                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3372                       # shortlog uses      chop_str($co{'author_name'}, 10)
3373                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3374                       "<td>";
3375                 # originally git_history used chop_str($co{'title'}, 50)
3376                 print format_subject_html($co{'title'}, $co{'title_short'},
3377                                           href(action=>"commit", hash=>$commit), $ref);
3378                 print "</td>\n" .
3379                       "<td class=\"link\">" .
3380                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3381                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3382
3383                 if ($ftype eq 'blob') {
3384                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3385                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3386                         if (defined $blob_current && defined $blob_parent &&
3387                                         $blob_current ne $blob_parent) {
3388                                 print " | " .
3389                                         $cgi->a({-href => href(action=>"blobdiff",
3390                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3391                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3392                                                                file_name=>$file_name)},
3393                                                 "diff to current");
3394                         }
3395                 }
3396                 print "</td>\n" .
3397                       "</tr>\n";
3398         }
3399         if (defined $extra) {
3400                 print "<tr>\n" .
3401                       "<td colspan=\"4\">$extra</td>\n" .
3402                       "</tr>\n";
3403         }
3404         print "</table>\n";
3405 }
3406
3407 sub git_tags_body {
3408         # uses global variable $project
3409         my ($taglist, $from, $to, $extra) = @_;
3410         $from = 0 unless defined $from;
3411         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3412
3413         print "<table class=\"tags\" cellspacing=\"0\">\n";
3414         my $alternate = 1;
3415         for (my $i = $from; $i <= $to; $i++) {
3416                 my $entry = $taglist->[$i];
3417                 my %tag = %$entry;
3418                 my $comment = $tag{'subject'};
3419                 my $comment_short;
3420                 if (defined $comment) {
3421                         $comment_short = chop_str($comment, 30, 5);
3422                 }
3423                 if ($alternate) {
3424                         print "<tr class=\"dark\">\n";
3425                 } else {
3426                         print "<tr class=\"light\">\n";
3427                 }
3428                 $alternate ^= 1;
3429                 if (defined $tag{'age'}) {
3430                         print "<td><i>$tag{'age'}</i></td>\n";
3431                 } else {
3432                         print "<td></td>\n";
3433                 }
3434                 print "<td>" .
3435                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3436                                -class => "list name"}, esc_html($tag{'name'})) .
3437                       "</td>\n" .
3438                       "<td>";
3439                 if (defined $comment) {
3440                         print format_subject_html($comment, $comment_short,
3441                                                   href(action=>"tag", hash=>$tag{'id'}));
3442                 }
3443                 print "</td>\n" .
3444                       "<td class=\"selflink\">";
3445                 if ($tag{'type'} eq "tag") {
3446                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3447                 } else {
3448                         print "&nbsp;";
3449                 }
3450                 print "</td>\n" .
3451                       "<td class=\"link\">" . " | " .
3452                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3453                 if ($tag{'reftype'} eq "commit") {
3454                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3455                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3456                 } elsif ($tag{'reftype'} eq "blob") {
3457                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3458                 }
3459                 print "</td>\n" .
3460                       "</tr>";
3461         }
3462         if (defined $extra) {
3463                 print "<tr>\n" .
3464                       "<td colspan=\"5\">$extra</td>\n" .
3465                       "</tr>\n";
3466         }
3467         print "</table>\n";
3468 }
3469
3470 sub git_heads_body {
3471         # uses global variable $project
3472         my ($headlist, $head, $from, $to, $extra) = @_;
3473         $from = 0 unless defined $from;
3474         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3475
3476         print "<table class=\"heads\" cellspacing=\"0\">\n";
3477         my $alternate = 1;
3478         for (my $i = $from; $i <= $to; $i++) {
3479                 my $entry = $headlist->[$i];
3480                 my %ref = %$entry;
3481                 my $curr = $ref{'id'} eq $head;
3482                 if ($alternate) {
3483                         print "<tr class=\"dark\">\n";
3484                 } else {
3485                         print "<tr class=\"light\">\n";
3486                 }
3487                 $alternate ^= 1;
3488                 print "<td><i>$ref{'age'}</i></td>\n" .
3489                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3490                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3491                                -class => "list name"},esc_html($ref{'name'})) .
3492                       "</td>\n" .
3493                       "<td class=\"link\">" .
3494                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3495                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3496                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3497                       "</td>\n" .
3498                       "</tr>";
3499         }
3500         if (defined $extra) {
3501                 print "<tr>\n" .
3502                       "<td colspan=\"3\">$extra</td>\n" .
3503                       "</tr>\n";
3504         }
3505         print "</table>\n";
3506 }
3507
3508 sub git_search_grep_body {
3509         my ($commitlist, $from, $to, $extra) = @_;
3510         $from = 0 unless defined $from;
3511         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3512
3513         print "<table class=\"grep\" cellspacing=\"0\">\n";
3514         my $alternate = 1;
3515         for (my $i = $from; $i <= $to; $i++) {
3516                 my %co = %{$commitlist->[$i]};
3517                 if (!%co) {
3518                         next;
3519                 }
3520                 my $commit = $co{'id'};
3521                 if ($alternate) {
3522                         print "<tr class=\"dark\">\n";
3523                 } else {
3524                         print "<tr class=\"light\">\n";
3525                 }
3526                 $alternate ^= 1;
3527                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3528                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3529                       "<td>" .
3530                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3531                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3532                 my $comment = $co{'comment'};
3533                 foreach my $line (@$comment) {
3534                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3535                                 my $lead = esc_html($1) || "";
3536                                 $lead = chop_str($lead, 30, 10);
3537                                 my $match = esc_html($2) || "";
3538                                 my $trail = esc_html($3) || "";
3539                                 $trail = chop_str($trail, 30, 10);
3540                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3541                                 print chop_str($text, 80, 5) . "<br/>\n";
3542                         }
3543                 }
3544                 print "</td>\n" .
3545                       "<td class=\"link\">" .
3546                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3547                       " | " .
3548                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3549                 print "</td>\n" .
3550                       "</tr>\n";
3551         }
3552         if (defined $extra) {
3553                 print "<tr>\n" .
3554                       "<td colspan=\"3\">$extra</td>\n" .
3555                       "</tr>\n";
3556         }
3557         print "</table>\n";
3558 }
3559
3560 ## ======================================================================
3561 ## ======================================================================
3562 ## actions
3563
3564 sub git_project_list {
3565         my $order = $cgi->param('o');
3566         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3567                 die_error(undef, "Unknown order parameter");
3568         }
3569
3570         my @list = git_get_projects_list();
3571         if (!@list) {
3572                 die_error(undef, "No projects found");
3573         }
3574
3575         git_header_html();
3576         if (-f $home_text) {
3577                 print "<div class=\"index_include\">\n";
3578                 open (my $fd, $home_text);
3579                 print <$fd>;
3580                 close $fd;
3581                 print "</div>\n";
3582         }
3583         git_project_list_body(\@list, $order);
3584         git_footer_html();
3585 }
3586
3587 sub git_forks {
3588         my $order = $cgi->param('o');
3589         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3590                 die_error(undef, "Unknown order parameter");
3591         }
3592
3593         my @list = git_get_projects_list($project);
3594         if (!@list) {
3595                 die_error(undef, "No forks found");
3596         }
3597
3598         git_header_html();
3599         git_print_page_nav('','');
3600         git_print_header_div('summary', "$project forks");
3601         git_project_list_body(\@list, $order);
3602         git_footer_html();
3603 }
3604
3605 sub git_project_index {
3606         my @projects = git_get_projects_list($project);
3607
3608         print $cgi->header(
3609                 -type => 'text/plain',
3610                 -charset => 'utf-8',
3611                 -content_disposition => 'inline; filename="index.aux"');
3612
3613         foreach my $pr (@projects) {
3614                 if (!exists $pr->{'owner'}) {
3615                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3616                 }
3617
3618                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3619                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3620                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3621                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3622                 $path  =~ s/ /\+/g;
3623                 $owner =~ s/ /\+/g;
3624
3625                 print "$path $owner\n";
3626         }
3627 }
3628
3629 sub git_summary {
3630         my $descr = git_get_project_description($project) || "none";
3631         my %co = parse_commit("HEAD");
3632         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3633         my $head = $co{'id'};
3634
3635         my $owner = git_get_project_owner($project);
3636
3637         my $refs = git_get_references();
3638         # These get_*_list functions return one more to allow us to see if
3639         # there are more ...
3640         my @taglist  = git_get_tags_list(16);
3641         my @headlist = git_get_heads_list(16);
3642         my @forklist;
3643         my ($check_forks) = gitweb_check_feature('forks');
3644
3645         if ($check_forks) {
3646                 @forklist = git_get_projects_list($project);
3647         }
3648
3649         git_header_html();
3650         git_print_page_nav('summary','', $head);
3651
3652         print "<div class=\"title\">&nbsp;</div>\n";
3653         print "<table cellspacing=\"0\">\n" .
3654               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3655               "<tr><td>owner</td><td>$owner</td></tr>\n";
3656         if (defined $cd{'rfc2822'}) {
3657                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3658         }
3659
3660         # use per project git URL list in $projectroot/$project/cloneurl
3661         # or make project git URL from git base URL and project name
3662         my $url_tag = "URL";
3663         my @url_list = git_get_project_url_list($project);
3664         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3665         foreach my $git_url (@url_list) {
3666                 next unless $git_url;
3667                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3668                 $url_tag = "";
3669         }
3670         print "</table>\n";
3671
3672         if (-s "$projectroot/$project/README.html") {
3673                 if (open my $fd, "$projectroot/$project/README.html") {
3674                         print "<div class=\"title\">readme</div>\n";
3675                         print $_ while (<$fd>);
3676                         close $fd;
3677                 }
3678         }
3679
3680         # we need to request one more than 16 (0..15) to check if
3681         # those 16 are all
3682         my @commitlist = $head ? parse_commits($head, 17) : ();
3683         if (@commitlist) {
3684                 git_print_header_div('shortlog');
3685                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3686                                   $#commitlist <=  15 ? undef :
3687                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3688         }
3689
3690         if (@taglist) {
3691                 git_print_header_div('tags');
3692                 git_tags_body(\@taglist, 0, 15,
3693                               $#taglist <=  15 ? undef :
3694                               $cgi->a({-href => href(action=>"tags")}, "..."));
3695         }
3696
3697         if (@headlist) {
3698                 git_print_header_div('heads');
3699                 git_heads_body(\@headlist, $head, 0, 15,
3700                                $#headlist <= 15 ? undef :
3701                                $cgi->a({-href => href(action=>"heads")}, "..."));
3702         }
3703
3704         if (@forklist) {
3705                 git_print_header_div('forks');
3706                 git_project_list_body(\@forklist, undef, 0, 15,
3707                                       $#forklist <= 15 ? undef :
3708                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3709                                       'noheader');
3710         }
3711
3712         git_footer_html();
3713 }
3714
3715 sub git_tag {
3716         my $head = git_get_head_hash($project);
3717         git_header_html();
3718         git_print_page_nav('','', $head,undef,$head);
3719         my %tag = parse_tag($hash);
3720
3721         if (! %tag) {
3722                 die_error(undef, "Unknown tag object");
3723         }
3724
3725         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3726         print "<div class=\"title_text\">\n" .
3727               "<table cellspacing=\"0\">\n" .
3728               "<tr>\n" .
3729               "<td>object</td>\n" .
3730               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3731                                $tag{'object'}) . "</td>\n" .
3732               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3733                                               $tag{'type'}) . "</td>\n" .
3734               "</tr>\n";
3735         if (defined($tag{'author'})) {
3736                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3737                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3738                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3739                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3740                         "</td></tr>\n";
3741         }
3742         print "</table>\n\n" .
3743               "</div>\n";
3744         print "<div class=\"page_body\">";
3745         my $comment = $tag{'comment'};
3746         foreach my $line (@$comment) {
3747                 chomp $line;
3748                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3749         }
3750         print "</div>\n";
3751         git_footer_html();
3752 }
3753
3754 sub git_blame2 {
3755         my $fd;
3756         my $ftype;
3757
3758         my ($have_blame) = gitweb_check_feature('blame');
3759         if (!$have_blame) {
3760                 die_error('403 Permission denied', "Permission denied");
3761         }
3762         die_error('404 Not Found', "File name not defined") if (!$file_name);
3763         $hash_base ||= git_get_head_hash($project);
3764         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3765         my %co = parse_commit($hash_base)
3766                 or die_error(undef, "Reading commit failed");
3767         if (!defined $hash) {
3768                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3769                         or die_error(undef, "Error looking up file");
3770         }
3771         $ftype = git_get_type($hash);
3772         if ($ftype !~ "blob") {
3773                 die_error('400 Bad Request', "Object is not a blob");
3774         }
3775         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3776               $file_name, $hash_base)
3777                 or die_error(undef, "Open git-blame failed");
3778         git_header_html();
3779         my $formats_nav =
3780                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3781                         "blob") .
3782                 " | " .
3783                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3784                         "history") .
3785                 " | " .
3786                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3787                         "HEAD");
3788         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3789         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3790         git_print_page_path($file_name, $ftype, $hash_base);
3791         my @rev_color = (qw(light2 dark2));
3792         my $num_colors = scalar(@rev_color);
3793         my $current_color = 0;
3794         my $last_rev;
3795         print <<HTML;
3796 <div class="page_body">
3797 <table class="blame">
3798 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3799 HTML
3800         my %metainfo = ();
3801         while (1) {
3802                 $_ = <$fd>;
3803                 last unless defined $_;
3804                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3805                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3806                 if (!exists $metainfo{$full_rev}) {
3807                         $metainfo{$full_rev} = {};
3808                 }
3809                 my $meta = $metainfo{$full_rev};
3810                 while (<$fd>) {
3811                         last if (s/^\t//);
3812                         if (/^(\S+) (.*)$/) {
3813                                 $meta->{$1} = $2;
3814                         }
3815                 }
3816                 my $data = $_;
3817                 chomp $data;
3818                 my $rev = substr($full_rev, 0, 8);
3819                 my $author = $meta->{'author'};
3820                 my %date = parse_date($meta->{'author-time'},
3821                                       $meta->{'author-tz'});
3822                 my $date = $date{'iso-tz'};
3823                 if ($group_size) {
3824                         $current_color = ++$current_color % $num_colors;
3825                 }
3826                 print "<tr class=\"$rev_color[$current_color]\">\n";
3827                 if ($group_size) {
3828                         print "<td class=\"sha1\"";
3829                         print " title=\"". esc_html($author) . ", $date\"";
3830                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3831                         print ">";
3832                         print $cgi->a({-href => href(action=>"commit",
3833                                                      hash=>$full_rev,
3834                                                      file_name=>$file_name)},
3835                                       esc_html($rev));
3836                         print "</td>\n";
3837                 }
3838                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3839                         or die_error(undef, "Open git-rev-parse failed");
3840                 my $parent_commit = <$dd>;
3841                 close $dd;
3842                 chomp($parent_commit);
3843                 my $blamed = href(action => 'blame',
3844                                   file_name => $meta->{'filename'},
3845                                   hash_base => $parent_commit);
3846                 print "<td class=\"linenr\">";
3847                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3848                                 -id => "l$lineno",
3849                                 -class => "linenr" },
3850                               esc_html($lineno));
3851                 print "</td>";
3852                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3853                 print "</tr>\n";
3854         }
3855         print "</table>\n";
3856         print "</div>";
3857         close $fd
3858                 or print "Reading blob failed\n";
3859         git_footer_html();
3860 }
3861
3862 sub git_blame {
3863         my $fd;
3864
3865         my ($have_blame) = gitweb_check_feature('blame');
3866         if (!$have_blame) {
3867                 die_error('403 Permission denied', "Permission denied");
3868         }
3869         die_error('404 Not Found', "File name not defined") if (!$file_name);
3870         $hash_base ||= git_get_head_hash($project);
3871         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3872         my %co = parse_commit($hash_base)
3873                 or die_error(undef, "Reading commit failed");
3874         if (!defined $hash) {
3875                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3876                         or die_error(undef, "Error lookup file");
3877         }
3878         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3879                 or die_error(undef, "Open git-annotate failed");
3880         git_header_html();
3881         my $formats_nav =
3882                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3883                         "blob") .
3884                 " | " .
3885                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3886                         "history") .
3887                 " | " .
3888                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3889                         "HEAD");
3890         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3891         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3892         git_print_page_path($file_name, 'blob', $hash_base);
3893         print "<div class=\"page_body\">\n";
3894         print <<HTML;
3895 <table class="blame">
3896   <tr>
3897     <th>Commit</th>
3898     <th>Age</th>
3899     <th>Author</th>
3900     <th>Line</th>
3901     <th>Data</th>
3902   </tr>
3903 HTML
3904         my @line_class = (qw(light dark));
3905         my $line_class_len = scalar (@line_class);
3906         my $line_class_num = $#line_class;
3907         while (my $line = <$fd>) {
3908                 my $long_rev;
3909                 my $short_rev;
3910                 my $author;
3911                 my $time;
3912                 my $lineno;
3913                 my $data;
3914                 my $age;
3915                 my $age_str;
3916                 my $age_class;
3917
3918                 chomp $line;
3919                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3920
3921                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3922                         $long_rev = $1;
3923                         $author   = $2;
3924                         $time     = $3;
3925                         $lineno   = $4;
3926                         $data     = $5;
3927                 } else {
3928                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3929                         next;
3930                 }
3931                 $short_rev  = substr ($long_rev, 0, 8);
3932                 $age        = time () - $time;
3933                 $age_str    = age_string ($age);
3934                 $age_str    =~ s/ /&nbsp;/g;
3935                 $age_class  = age_class($age);
3936                 $author     = esc_html ($author);
3937                 $author     =~ s/ /&nbsp;/g;
3938
3939                 $data = untabify($data);
3940                 $data = esc_html ($data);
3941
3942                 print <<HTML;
3943   <tr class="$line_class[$line_class_num]">
3944     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3945     <td class="$age_class">$age_str</td>
3946     <td>$author</td>
3947     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3948     <td class="pre">$data</td>
3949   </tr>
3950 HTML
3951         } # while (my $line = <$fd>)
3952         print "</table>\n\n";
3953         close $fd
3954                 or print "Reading blob failed.\n";
3955         print "</div>";
3956         git_footer_html();
3957 }
3958
3959 sub git_tags {
3960         my $head = git_get_head_hash($project);
3961         git_header_html();
3962         git_print_page_nav('','', $head,undef,$head);
3963         git_print_header_div('summary', $project);
3964
3965         my @tagslist = git_get_tags_list();
3966         if (@tagslist) {
3967                 git_tags_body(\@tagslist);
3968         }
3969         git_footer_html();
3970 }
3971
3972 sub git_heads {
3973         my $head = git_get_head_hash($project);
3974         git_header_html();
3975         git_print_page_nav('','', $head,undef,$head);
3976         git_print_header_div('summary', $project);
3977
3978         my @headslist = git_get_heads_list();
3979         if (@headslist) {
3980                 git_heads_body(\@headslist, $head);
3981         }
3982         git_footer_html();
3983 }
3984
3985 sub git_blob_plain {
3986         my $expires;
3987
3988         if (!defined $hash) {
3989                 if (defined $file_name) {
3990                         my $base = $hash_base || git_get_head_hash($project);
3991                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3992                                 or die_error(undef, "Error lookup file");
3993                 } else {
3994                         die_error(undef, "No file name defined");
3995                 }
3996         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3997                 # blobs defined by non-textual hash id's can be cached
3998                 $expires = "+1d";
3999         }
4000
4001         my $type = shift;
4002         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4003                 or die_error(undef, "Couldn't cat $file_name, $hash");
4004
4005         $type ||= blob_mimetype($fd, $file_name);
4006
4007         # save as filename, even when no $file_name is given
4008         my $save_as = "$hash";
4009         if (defined $file_name) {
4010                 $save_as = $file_name;
4011         } elsif ($type =~ m/^text\//) {
4012                 $save_as .= '.txt';
4013         }
4014
4015         print $cgi->header(
4016                 -type => "$type",
4017                 -expires=>$expires,
4018                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4019         undef $/;
4020         binmode STDOUT, ':raw';
4021         print <$fd>;
4022         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4023         $/ = "\n";
4024         close $fd;
4025 }
4026
4027 sub git_blob {
4028         my $expires;
4029
4030         if (!defined $hash) {
4031                 if (defined $file_name) {
4032                         my $base = $hash_base || git_get_head_hash($project);
4033                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4034                                 or die_error(undef, "Error lookup file");
4035                 } else {
4036                         die_error(undef, "No file name defined");
4037                 }
4038         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4039                 # blobs defined by non-textual hash id's can be cached
4040                 $expires = "+1d";
4041         }
4042
4043         my ($have_blame) = gitweb_check_feature('blame');
4044         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4045                 or die_error(undef, "Couldn't cat $file_name, $hash");
4046         my $mimetype = blob_mimetype($fd, $file_name);
4047         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4048                 close $fd;
4049                 return git_blob_plain($mimetype);
4050         }
4051         # we can have blame only for text/* mimetype
4052         $have_blame &&= ($mimetype =~ m!^text/!);
4053
4054         git_header_html(undef, $expires);
4055         my $formats_nav = '';
4056         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4057                 if (defined $file_name) {
4058                         if ($have_blame) {
4059                                 $formats_nav .=
4060                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4061                                                                hash=>$hash, file_name=>$file_name)},
4062                                                 "blame") .
4063                                         " | ";
4064                         }
4065                         $formats_nav .=
4066                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4067                                                        hash=>$hash, file_name=>$file_name)},
4068                                         "history") .
4069                                 " | " .
4070                                 $cgi->a({-href => href(action=>"blob_plain",
4071                                                        hash=>$hash, file_name=>$file_name)},
4072                                         "raw") .
4073                                 " | " .
4074                                 $cgi->a({-href => href(action=>"blob",
4075                                                        hash_base=>"HEAD", file_name=>$file_name)},
4076                                         "HEAD");
4077                 } else {
4078                         $formats_nav .=
4079                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4080                 }
4081                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4082                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4083         } else {
4084                 print "<div class=\"page_nav\">\n" .
4085                       "<br/><br/></div>\n" .
4086                       "<div class=\"title\">$hash</div>\n";
4087         }
4088         git_print_page_path($file_name, "blob", $hash_base);
4089         print "<div class=\"page_body\">\n";
4090         if ($mimetype =~ m!^text/!) {
4091                 my $nr;
4092                 while (my $line = <$fd>) {
4093                         chomp $line;
4094                         $nr++;
4095                         $line = untabify($line);
4096                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4097                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4098                 }
4099         } elsif ($mimetype =~ m!^image/!) {
4100                 print qq!<img type="$mimetype"!;
4101                 if ($file_name) {
4102                         print qq! alt="$file_name" title="$file_name"!;
4103                 }
4104                 print qq! src="! .
4105                       href(action=>"blob_plain", hash=>$hash,
4106                            hash_base=>$hash_base, file_name=>$file_name) .
4107                       qq!" />\n!;
4108         }
4109         close $fd
4110                 or print "Reading blob failed.\n";
4111         print "</div>";
4112         git_footer_html();
4113 }
4114
4115 sub git_tree {
4116         my $have_snapshot = gitweb_have_snapshot();
4117
4118         if (!defined $hash_base) {
4119                 $hash_base = "HEAD";
4120         }
4121         if (!defined $hash) {
4122                 if (defined $file_name) {
4123                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4124                 } else {
4125                         $hash = $hash_base;
4126                 }
4127         }
4128         $/ = "\0";
4129         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4130                 or die_error(undef, "Open git-ls-tree failed");
4131         my @entries = map { chomp; $_ } <$fd>;
4132         close $fd or die_error(undef, "Reading tree failed");
4133         $/ = "\n";
4134
4135         my $refs = git_get_references();
4136         my $ref = format_ref_marker($refs, $hash_base);
4137         git_header_html();
4138         my $basedir = '';
4139         my ($have_blame) = gitweb_check_feature('blame');
4140         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4141                 my @views_nav = ();
4142                 if (defined $file_name) {
4143                         push @views_nav,
4144                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4145                                                        hash=>$hash, file_name=>$file_name)},
4146                                         "history"),
4147                                 $cgi->a({-href => href(action=>"tree",
4148                                                        hash_base=>"HEAD", file_name=>$file_name)},
4149                                         "HEAD"),
4150                 }
4151                 if ($have_snapshot) {
4152                         # FIXME: Should be available when we have no hash base as well.
4153                         push @views_nav,
4154                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4155                                         "snapshot");
4156                 }
4157                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4158                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4159         } else {
4160                 undef $hash_base;
4161                 print "<div class=\"page_nav\">\n";
4162                 print "<br/><br/></div>\n";
4163                 print "<div class=\"title\">$hash</div>\n";
4164         }
4165         if (defined $file_name) {
4166                 $basedir = $file_name;
4167                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4168                         $basedir .= '/';
4169                 }
4170         }
4171         git_print_page_path($file_name, 'tree', $hash_base);
4172         print "<div class=\"page_body\">\n";
4173         print "<table cellspacing=\"0\">\n";
4174         my $alternate = 1;
4175         # '..' (top directory) link if possible
4176         if (defined $hash_base &&
4177             defined $file_name && $file_name =~ m![^/]+$!) {
4178                 if ($alternate) {
4179                         print "<tr class=\"dark\">\n";
4180                 } else {
4181                         print "<tr class=\"light\">\n";
4182                 }
4183                 $alternate ^= 1;
4184
4185                 my $up = $file_name;
4186                 $up =~ s!/?[^/]+$!!;
4187                 undef $up unless $up;
4188                 # based on git_print_tree_entry
4189                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4190                 print '<td class="list">';
4191                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4192                                              file_name=>$up)},
4193                               "..");
4194                 print "</td>\n";
4195                 print "<td class=\"link\"></td>\n";
4196
4197                 print "</tr>\n";
4198         }
4199         foreach my $line (@entries) {
4200                 my %t = parse_ls_tree_line($line, -z => 1);
4201
4202                 if ($alternate) {
4203                         print "<tr class=\"dark\">\n";
4204                 } else {
4205                         print "<tr class=\"light\">\n";
4206                 }
4207                 $alternate ^= 1;
4208
4209                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4210
4211                 print "</tr>\n";
4212         }
4213         print "</table>\n" .
4214               "</div>";
4215         git_footer_html();
4216 }
4217
4218 sub git_snapshot {
4219         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4220         my $have_snapshot = (defined $ctype && defined $suffix);
4221         if (!$have_snapshot) {
4222                 die_error('403 Permission denied', "Permission denied");
4223         }
4224
4225         if (!defined $hash) {
4226                 $hash = git_get_head_hash($project);
4227         }
4228
4229         my $git = git_cmd_str();
4230         my $name = $project;
4231         $name =~ s,([^/])/*\.git$,$1,;
4232         $name = basename($name);
4233         my $filename = to_utf8($name);
4234         $name =~ s/\047/\047\\\047\047/g;
4235         my $cmd;
4236         if ($suffix eq 'zip') {
4237                 $filename .= "-$hash.$suffix";
4238                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4239         } else {
4240                 $filename .= "-$hash.tar.$suffix";
4241                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4242         }
4243
4244         print $cgi->header(
4245                 -type => "application/$ctype",
4246                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4247                 -status => '200 OK');
4248
4249         open my $fd, "-|", $cmd
4250                 or die_error(undef, "Execute git-archive failed");
4251         binmode STDOUT, ':raw';
4252         print <$fd>;
4253         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4254         close $fd;
4255
4256 }
4257
4258 sub git_log {
4259         my $head = git_get_head_hash($project);
4260         if (!defined $hash) {
4261                 $hash = $head;
4262         }
4263         if (!defined $page) {
4264                 $page = 0;
4265         }
4266         my $refs = git_get_references();
4267
4268         my @commitlist = parse_commits($hash, 101, (100 * $page));
4269
4270         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4271
4272         git_header_html();
4273         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4274
4275         if (!@commitlist) {
4276                 my %co = parse_commit($hash);
4277
4278                 git_print_header_div('summary', $project);
4279                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4280         }
4281         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4282         for (my $i = 0; $i <= $to; $i++) {
4283                 my %co = %{$commitlist[$i]};
4284                 next if !%co;
4285                 my $commit = $co{'id'};
4286                 my $ref = format_ref_marker($refs, $commit);
4287                 my %ad = parse_date($co{'author_epoch'});
4288                 git_print_header_div('commit',
4289                                "<span class=\"age\">$co{'age_string'}</span>" .
4290                                esc_html($co{'title'}) . $ref,
4291                                $commit);
4292                 print "<div class=\"title_text\">\n" .
4293                       "<div class=\"log_link\">\n" .
4294                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4295                       " | " .
4296                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4297                       " | " .
4298                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4299                       "<br/>\n" .
4300                       "</div>\n" .
4301                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4302                       "</div>\n";
4303
4304                 print "<div class=\"log_body\">\n";
4305                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4306                 print "</div>\n";
4307         }
4308         if ($#commitlist >= 100) {
4309                 print "<div class=\"page_nav\">\n";
4310                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4311                                -accesskey => "n", -title => "Alt-n"}, "next");
4312                 print "</div>\n";
4313         }
4314         git_footer_html();
4315 }
4316
4317 sub git_commit {
4318         $hash ||= $hash_base || "HEAD";
4319         my %co = parse_commit($hash);
4320         if (!%co) {
4321                 die_error(undef, "Unknown commit object");
4322         }
4323         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4324         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4325
4326         my $parent  = $co{'parent'};
4327         my $parents = $co{'parents'}; # listref
4328
4329         # we need to prepare $formats_nav before any parameter munging
4330         my $formats_nav;
4331         if (!defined $parent) {
4332                 # --root commitdiff
4333                 $formats_nav .= '(initial)';
4334         } elsif (@$parents == 1) {
4335                 # single parent commit
4336                 $formats_nav .=
4337                         '(parent: ' .
4338                         $cgi->a({-href => href(action=>"commit",
4339                                                hash=>$parent)},
4340                                 esc_html(substr($parent, 0, 7))) .
4341                         ')';
4342         } else {
4343                 # merge commit
4344                 $formats_nav .=
4345                         '(merge: ' .
4346                         join(' ', map {
4347                                 $cgi->a({-href => href(action=>"commit",
4348                                                        hash=>$_)},
4349                                         esc_html(substr($_, 0, 7)));
4350                         } @$parents ) .
4351                         ')';
4352         }
4353
4354         if (!defined $parent) {
4355                 $parent = "--root";
4356         }
4357         my @difftree;
4358         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4359                 @diff_opts,
4360                 (@$parents <= 1 ? $parent : '-c'),
4361                 $hash, "--"
4362                 or die_error(undef, "Open git-diff-tree failed");
4363         @difftree = map { chomp; $_ } <$fd>;
4364         close $fd or die_error(undef, "Reading git-diff-tree failed");
4365
4366         # non-textual hash id's can be cached
4367         my $expires;
4368         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4369                 $expires = "+1d";
4370         }
4371         my $refs = git_get_references();
4372         my $ref = format_ref_marker($refs, $co{'id'});
4373
4374         my $have_snapshot = gitweb_have_snapshot();
4375
4376         git_header_html(undef, $expires);
4377         git_print_page_nav('commit', '',
4378                            $hash, $co{'tree'}, $hash,
4379                            $formats_nav);
4380
4381         if (defined $co{'parent'}) {
4382                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4383         } else {
4384                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4385         }
4386         print "<div class=\"title_text\">\n" .
4387               "<table cellspacing=\"0\">\n";
4388         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4389               "<tr>" .
4390               "<td></td><td> $ad{'rfc2822'}";
4391         if ($ad{'hour_local'} < 6) {
4392                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4393                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4394         } else {
4395                 printf(" (%02d:%02d %s)",
4396                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4397         }
4398         print "</td>" .
4399               "</tr>\n";
4400         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4401         print "<tr><td></td><td> $cd{'rfc2822'}" .
4402               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4403               "</td></tr>\n";
4404         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4405         print "<tr>" .
4406               "<td>tree</td>" .
4407               "<td class=\"sha1\">" .
4408               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4409                        class => "list"}, $co{'tree'}) .
4410               "</td>" .
4411               "<td class=\"link\">" .
4412               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4413                       "tree");
4414         if ($have_snapshot) {
4415                 print " | " .
4416                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4417         }
4418         print "</td>" .
4419               "</tr>\n";
4420
4421         foreach my $par (@$parents) {
4422                 print "<tr>" .
4423                       "<td>parent</td>" .
4424                       "<td class=\"sha1\">" .
4425                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4426                                class => "list"}, $par) .
4427                       "</td>" .
4428                       "<td class=\"link\">" .
4429                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4430                       " | " .
4431                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4432                       "</td>" .
4433                       "</tr>\n";
4434         }
4435         print "</table>".
4436               "</div>\n";
4437
4438         print "<div class=\"page_body\">\n";
4439         git_print_log($co{'comment'});
4440         print "</div>\n";
4441
4442         git_difftree_body(\@difftree, $hash, @$parents);
4443
4444         git_footer_html();
4445 }
4446
4447 sub git_object {
4448         # object is defined by:
4449         # - hash or hash_base alone
4450         # - hash_base and file_name
4451         my $type;
4452
4453         # - hash or hash_base alone
4454         if ($hash || ($hash_base && !defined $file_name)) {
4455                 my $object_id = $hash || $hash_base;
4456
4457                 my $git_command = git_cmd_str();
4458                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4459                         or die_error('404 Not Found', "Object does not exist");
4460                 $type = <$fd>;
4461                 chomp $type;
4462                 close $fd
4463                         or die_error('404 Not Found', "Object does not exist");
4464
4465         # - hash_base and file_name
4466         } elsif ($hash_base && defined $file_name) {
4467                 $file_name =~ s,/+$,,;
4468
4469                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4470                         or die_error('404 Not Found', "Base object does not exist");
4471
4472                 # here errors should not hapen
4473                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4474                         or die_error(undef, "Open git-ls-tree failed");
4475                 my $line = <$fd>;
4476                 close $fd;
4477
4478                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4479                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4480                         die_error('404 Not Found', "File or directory for given base does not exist");
4481                 }
4482                 $type = $2;
4483                 $hash = $3;
4484         } else {
4485                 die_error('404 Not Found', "Not enough information to find object");
4486         }
4487
4488         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4489                                           hash=>$hash, hash_base=>$hash_base,
4490                                           file_name=>$file_name),
4491                              -status => '302 Found');
4492 }
4493
4494 sub git_blobdiff {
4495         my $format = shift || 'html';
4496
4497         my $fd;
4498         my @difftree;
4499         my %diffinfo;
4500         my $expires;
4501
4502         # preparing $fd and %diffinfo for git_patchset_body
4503         # new style URI
4504         if (defined $hash_base && defined $hash_parent_base) {
4505                 if (defined $file_name) {
4506                         # read raw output
4507                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4508                                 $hash_parent_base, $hash_base,
4509                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4510                                 or die_error(undef, "Open git-diff-tree failed");
4511                         @difftree = map { chomp; $_ } <$fd>;
4512                         close $fd
4513                                 or die_error(undef, "Reading git-diff-tree failed");
4514                         @difftree
4515                                 or die_error('404 Not Found', "Blob diff not found");
4516
4517                 } elsif (defined $hash &&
4518                          $hash =~ /[0-9a-fA-F]{40}/) {
4519                         # try to find filename from $hash
4520
4521                         # read filtered raw output
4522                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4523                                 $hash_parent_base, $hash_base, "--"
4524                                 or die_error(undef, "Open git-diff-tree failed");
4525                         @difftree =
4526                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4527                                 # $hash == to_id
4528                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4529                                 map { chomp; $_ } <$fd>;
4530                         close $fd
4531                                 or die_error(undef, "Reading git-diff-tree failed");
4532                         @difftree
4533                                 or die_error('404 Not Found', "Blob diff not found");
4534
4535                 } else {
4536                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4537                 }
4538
4539                 if (@difftree > 1) {
4540                         die_error('404 Not Found', "Ambiguous blob diff specification");
4541                 }
4542
4543                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4544                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4545                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4546
4547                 $hash_parent ||= $diffinfo{'from_id'};
4548                 $hash        ||= $diffinfo{'to_id'};
4549
4550                 # non-textual hash id's can be cached
4551                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4552                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4553                         $expires = '+1d';
4554                 }
4555
4556                 # open patch output
4557                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4558                         '-p', ($format eq 'html' ? "--full-index" : ()),
4559                         $hash_parent_base, $hash_base,
4560                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4561                         or die_error(undef, "Open git-diff-tree failed");
4562         }
4563
4564         # old/legacy style URI
4565         if (!%diffinfo && # if new style URI failed
4566             defined $hash && defined $hash_parent) {
4567                 # fake git-diff-tree raw output
4568                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4569                 $diffinfo{'from_id'} = $hash_parent;
4570                 $diffinfo{'to_id'}   = $hash;
4571                 if (defined $file_name) {
4572                         if (defined $file_parent) {
4573                                 $diffinfo{'status'} = '2';
4574                                 $diffinfo{'from_file'} = $file_parent;
4575                                 $diffinfo{'to_file'}   = $file_name;
4576                         } else { # assume not renamed
4577                                 $diffinfo{'status'} = '1';
4578                                 $diffinfo{'from_file'} = $file_name;
4579                                 $diffinfo{'to_file'}   = $file_name;
4580                         }
4581                 } else { # no filename given
4582                         $diffinfo{'status'} = '2';
4583                         $diffinfo{'from_file'} = $hash_parent;
4584                         $diffinfo{'to_file'}   = $hash;
4585                 }
4586
4587                 # non-textual hash id's can be cached
4588                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4589                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4590                         $expires = '+1d';
4591                 }
4592
4593                 # open patch output
4594                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4595                         '-p', ($format eq 'html' ? "--full-index" : ()),
4596                         $hash_parent, $hash, "--"
4597                         or die_error(undef, "Open git-diff failed");
4598         } else  {
4599                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4600                         unless %diffinfo;
4601         }
4602
4603         # header
4604         if ($format eq 'html') {
4605                 my $formats_nav =
4606                         $cgi->a({-href => href(action=>"blobdiff_plain",
4607                                                hash=>$hash, hash_parent=>$hash_parent,
4608                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4609                                                file_name=>$file_name, file_parent=>$file_parent)},
4610                                 "raw");
4611                 git_header_html(undef, $expires);
4612                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4613                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4614                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4615                 } else {
4616                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4617                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4618                 }
4619                 if (defined $file_name) {
4620                         git_print_page_path($file_name, "blob", $hash_base);
4621                 } else {
4622                         print "<div class=\"page_path\"></div>\n";
4623                 }
4624
4625         } elsif ($format eq 'plain') {
4626                 print $cgi->header(
4627                         -type => 'text/plain',
4628                         -charset => 'utf-8',
4629                         -expires => $expires,
4630                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4631
4632                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4633
4634         } else {
4635                 die_error(undef, "Unknown blobdiff format");
4636         }
4637
4638         # patch
4639         if ($format eq 'html') {
4640                 print "<div class=\"page_body\">\n";
4641
4642                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4643                 close $fd;
4644
4645                 print "</div>\n"; # class="page_body"
4646                 git_footer_html();
4647
4648         } else {
4649                 while (my $line = <$fd>) {
4650                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4651                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4652
4653                         print $line;
4654
4655                         last if $line =~ m!^\+\+\+!;
4656                 }
4657                 local $/ = undef;
4658                 print <$fd>;
4659                 close $fd;
4660         }
4661 }
4662
4663 sub git_blobdiff_plain {
4664         git_blobdiff('plain');
4665 }
4666
4667 sub git_commitdiff {
4668         my $format = shift || 'html';
4669         $hash ||= $hash_base || "HEAD";
4670         my %co = parse_commit($hash);
4671         if (!%co) {
4672                 die_error(undef, "Unknown commit object");
4673         }
4674
4675         # choose format for commitdiff for merge
4676         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4677                 $hash_parent = '--cc';
4678         }
4679         # we need to prepare $formats_nav before almost any parameter munging
4680         my $formats_nav;
4681         if ($format eq 'html') {
4682                 $formats_nav =
4683                         $cgi->a({-href => href(action=>"commitdiff_plain",
4684                                                hash=>$hash, hash_parent=>$hash_parent)},
4685                                 "raw");
4686
4687                 if (defined $hash_parent &&
4688                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4689                         # commitdiff with two commits given
4690                         my $hash_parent_short = $hash_parent;
4691                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4692                                 $hash_parent_short = substr($hash_parent, 0, 7);
4693                         }
4694                         $formats_nav .=
4695                                 ' (from';
4696                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4697                                 if ($co{'parents'}[$i] eq $hash_parent) {
4698                                         $formats_nav .= ' parent ' . ($i+1);
4699                                         last;
4700                                 }
4701                         }
4702                         $formats_nav .= ': ' .
4703                                 $cgi->a({-href => href(action=>"commitdiff",
4704                                                        hash=>$hash_parent)},
4705                                         esc_html($hash_parent_short)) .
4706                                 ')';
4707                 } elsif (!$co{'parent'}) {
4708                         # --root commitdiff
4709                         $formats_nav .= ' (initial)';
4710                 } elsif (scalar @{$co{'parents'}} == 1) {
4711                         # single parent commit
4712                         $formats_nav .=
4713                                 ' (parent: ' .
4714                                 $cgi->a({-href => href(action=>"commitdiff",
4715                                                        hash=>$co{'parent'})},
4716                                         esc_html(substr($co{'parent'}, 0, 7))) .
4717                                 ')';
4718                 } else {
4719                         # merge commit
4720                         if ($hash_parent eq '--cc') {
4721                                 $formats_nav .= ' | ' .
4722                                         $cgi->a({-href => href(action=>"commitdiff",
4723                                                                hash=>$hash, hash_parent=>'-c')},
4724                                                 'combined');
4725                         } else { # $hash_parent eq '-c'
4726                                 $formats_nav .= ' | ' .
4727                                         $cgi->a({-href => href(action=>"commitdiff",
4728                                                                hash=>$hash, hash_parent=>'--cc')},
4729                                                 'compact');
4730                         }
4731                         $formats_nav .=
4732                                 ' (merge: ' .
4733                                 join(' ', map {
4734                                         $cgi->a({-href => href(action=>"commitdiff",
4735                                                                hash=>$_)},
4736                                                 esc_html(substr($_, 0, 7)));
4737                                 } @{$co{'parents'}} ) .
4738                                 ')';
4739                 }
4740         }
4741
4742         my $hash_parent_param = $hash_parent;
4743         if (!defined $hash_parent_param) {
4744                 # --cc for multiple parents, --root for parentless
4745                 $hash_parent_param =
4746                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4747         }
4748
4749         # read commitdiff
4750         my $fd;
4751         my @difftree;
4752         if ($format eq 'html') {
4753                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4754                         "--no-commit-id", "--patch-with-raw", "--full-index",
4755                         $hash_parent_param, $hash, "--"
4756                         or die_error(undef, "Open git-diff-tree failed");
4757
4758                 while (my $line = <$fd>) {
4759                         chomp $line;
4760                         # empty line ends raw part of diff-tree output
4761                         last unless $line;
4762                         push @difftree, scalar parse_difftree_raw_line($line);
4763                 }
4764
4765         } elsif ($format eq 'plain') {
4766                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4767                         '-p', $hash_parent_param, $hash, "--"
4768                         or die_error(undef, "Open git-diff-tree failed");
4769
4770         } else {
4771                 die_error(undef, "Unknown commitdiff format");
4772         }
4773
4774         # non-textual hash id's can be cached
4775         my $expires;
4776         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4777                 $expires = "+1d";
4778         }
4779
4780         # write commit message
4781         if ($format eq 'html') {
4782                 my $refs = git_get_references();
4783                 my $ref = format_ref_marker($refs, $co{'id'});
4784
4785                 git_header_html(undef, $expires);
4786                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4787                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4788                 git_print_authorship(\%co);
4789                 print "<div class=\"page_body\">\n";
4790                 if (@{$co{'comment'}} > 1) {
4791                         print "<div class=\"log\">\n";
4792                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4793                         print "</div>\n"; # class="log"
4794                 }
4795
4796         } elsif ($format eq 'plain') {
4797                 my $refs = git_get_references("tags");
4798                 my $tagname = git_get_rev_name_tags($hash);
4799                 my $filename = basename($project) . "-$hash.patch";
4800
4801                 print $cgi->header(
4802                         -type => 'text/plain',
4803                         -charset => 'utf-8',
4804                         -expires => $expires,
4805                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4806                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4807                 print <<TEXT;
4808 From: $co{'author'}
4809 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4810 Subject: $co{'title'}
4811 TEXT
4812                 print "X-Git-Tag: $tagname\n" if $tagname;
4813                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4814
4815                 foreach my $line (@{$co{'comment'}}) {
4816                         print "$line\n";
4817                 }
4818                 print "---\n\n";
4819         }
4820
4821         # write patch
4822         if ($format eq 'html') {
4823                 my $use_parents = !defined $hash_parent ||
4824                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4825                 git_difftree_body(\@difftree, $hash,
4826                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4827                 print "<br/>\n";
4828
4829                 git_patchset_body($fd, \@difftree, $hash,
4830                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4831                 close $fd;
4832                 print "</div>\n"; # class="page_body"
4833                 git_footer_html();
4834
4835         } elsif ($format eq 'plain') {
4836                 local $/ = undef;
4837                 print <$fd>;
4838                 close $fd
4839                         or print "Reading git-diff-tree failed\n";
4840         }
4841 }
4842
4843 sub git_commitdiff_plain {
4844         git_commitdiff('plain');
4845 }
4846
4847 sub git_history {
4848         if (!defined $hash_base) {
4849                 $hash_base = git_get_head_hash($project);
4850         }
4851         if (!defined $page) {
4852                 $page = 0;
4853         }
4854         my $ftype;
4855         my %co = parse_commit($hash_base);
4856         if (!%co) {
4857                 die_error(undef, "Unknown commit object");
4858         }
4859
4860         my $refs = git_get_references();
4861         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4862
4863         if (!defined $hash && defined $file_name) {
4864                 $hash = git_get_hash_by_path($hash_base, $file_name);
4865         }
4866         if (defined $hash) {
4867                 $ftype = git_get_type($hash);
4868         }
4869
4870         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4871
4872         my $paging_nav = '';
4873         if ($page > 0) {
4874                 $paging_nav .=
4875                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4876                                                file_name=>$file_name)},
4877                                 "first");
4878                 $paging_nav .= " &sdot; " .
4879                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4880                                                file_name=>$file_name, page=>$page-1),
4881                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4882         } else {
4883                 $paging_nav .= "first";
4884                 $paging_nav .= " &sdot; prev";
4885         }
4886         if ($#commitlist >= 100) {
4887                 $paging_nav .= " &sdot; " .
4888                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4889                                                file_name=>$file_name, page=>$page+1),
4890                                  -accesskey => "n", -title => "Alt-n"}, "next");
4891         } else {
4892                 $paging_nav .= " &sdot; next";
4893         }
4894         my $next_link = '';
4895         if ($#commitlist >= 100) {
4896                 $next_link =
4897                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4898                                                file_name=>$file_name, page=>$page+1),
4899                                  -accesskey => "n", -title => "Alt-n"}, "next");
4900         }
4901
4902         git_header_html();
4903         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4904         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4905         git_print_page_path($file_name, $ftype, $hash_base);
4906
4907         git_history_body(\@commitlist, 0, 99,
4908                          $refs, $hash_base, $ftype, $next_link);
4909
4910         git_footer_html();
4911 }
4912
4913 sub git_search {
4914         my ($have_search) = gitweb_check_feature('search');
4915         if (!$have_search) {
4916                 die_error('403 Permission denied', "Permission denied");
4917         }
4918         if (!defined $searchtext) {
4919                 die_error(undef, "Text field empty");
4920         }
4921         if (!defined $hash) {
4922                 $hash = git_get_head_hash($project);
4923         }
4924         my %co = parse_commit($hash);
4925         if (!%co) {
4926                 die_error(undef, "Unknown commit object");
4927         }
4928         if (!defined $page) {
4929                 $page = 0;
4930         }
4931
4932         $searchtype ||= 'commit';
4933         if ($searchtype eq 'pickaxe') {
4934                 # pickaxe may take all resources of your box and run for several minutes
4935                 # with every query - so decide by yourself how public you make this feature
4936                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4937                 if (!$have_pickaxe) {
4938                         die_error('403 Permission denied', "Permission denied");
4939                 }
4940         }
4941         if ($searchtype eq 'grep') {
4942                 my ($have_grep) = gitweb_check_feature('grep');
4943                 if (!$have_grep) {
4944                         die_error('403 Permission denied', "Permission denied");
4945                 }
4946         }
4947
4948         git_header_html();
4949
4950         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4951                 my $greptype;
4952                 if ($searchtype eq 'commit') {
4953                         $greptype = "--grep=";
4954                 } elsif ($searchtype eq 'author') {
4955                         $greptype = "--author=";
4956                 } elsif ($searchtype eq 'committer') {
4957                         $greptype = "--committer=";
4958                 }
4959                 $greptype .= $search_regexp;
4960                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4961
4962                 my $paging_nav = '';
4963                 if ($page > 0) {
4964                         $paging_nav .=
4965                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4966                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4967                                         "first");
4968                         $paging_nav .= " &sdot; " .
4969                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4970                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4971                                                        page=>$page-1),
4972                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4973                 } else {
4974                         $paging_nav .= "first";
4975                         $paging_nav .= " &sdot; prev";
4976                 }
4977                 if ($#commitlist >= 100) {
4978                         $paging_nav .= " &sdot; " .
4979                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4980                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4981                                                        page=>$page+1),
4982                                          -accesskey => "n", -title => "Alt-n"}, "next");
4983                 } else {
4984                         $paging_nav .= " &sdot; next";
4985                 }
4986                 my $next_link = '';
4987                 if ($#commitlist >= 100) {
4988                         $next_link =
4989                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4990                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4991                                                        page=>$page+1),
4992                                          -accesskey => "n", -title => "Alt-n"}, "next");
4993                 }
4994
4995                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4996                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4997                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4998         }
4999
5000         if ($searchtype eq 'pickaxe') {
5001                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5002                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5003
5004                 print "<table cellspacing=\"0\">\n";
5005                 my $alternate = 1;
5006                 $/ = "\n";
5007                 my $git_command = git_cmd_str();
5008                 my $searchqtext = $searchtext;
5009                 $searchqtext =~ s/'/'\\''/;
5010                 open my $fd, "-|", "$git_command rev-list $hash | " .
5011                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5012                 undef %co;
5013                 my @files;
5014                 while (my $line = <$fd>) {
5015                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5016                                 my %set;
5017                                 $set{'file'} = $6;
5018                                 $set{'from_id'} = $3;
5019                                 $set{'to_id'} = $4;
5020                                 $set{'id'} = $set{'to_id'};
5021                                 if ($set{'id'} =~ m/0{40}/) {
5022                                         $set{'id'} = $set{'from_id'};
5023                                 }
5024                                 if ($set{'id'} =~ m/0{40}/) {
5025                                         next;
5026                                 }
5027                                 push @files, \%set;
5028                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5029                                 if (%co) {
5030                                         if ($alternate) {
5031                                                 print "<tr class=\"dark\">\n";
5032                                         } else {
5033                                                 print "<tr class=\"light\">\n";
5034                                         }
5035                                         $alternate ^= 1;
5036                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5037                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5038                                               "<td>" .
5039                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5040                                                       -class => "list subject"},
5041                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5042                                         while (my $setref = shift @files) {
5043                                                 my %set = %$setref;
5044                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5045                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5046                                                               -class => "list"},
5047                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5048                                                       "<br/>\n";
5049                                         }
5050                                         print "</td>\n" .
5051                                               "<td class=\"link\">" .
5052                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5053                                               " | " .
5054                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5055                                         print "</td>\n" .
5056                                               "</tr>\n";
5057                                 }
5058                                 %co = parse_commit($1);
5059                         }
5060                 }
5061                 close $fd;
5062
5063                 print "</table>\n";
5064         }
5065
5066         if ($searchtype eq 'grep') {
5067                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5068                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5069
5070                 print "<table cellspacing=\"0\">\n";
5071                 my $alternate = 1;
5072                 my $matches = 0;
5073                 $/ = "\n";
5074                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5075                 my $lastfile = '';
5076                 while (my $line = <$fd>) {
5077                         chomp $line;
5078                         my ($file, $lno, $ltext, $binary);
5079                         last if ($matches++ > 1000);
5080                         if ($line =~ /^Binary file (.+) matches$/) {
5081                                 $file = $1;
5082                                 $binary = 1;
5083                         } else {
5084                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5085                         }
5086                         if ($file ne $lastfile) {
5087                                 $lastfile and print "</td></tr>\n";
5088                                 if ($alternate++) {
5089                                         print "<tr class=\"dark\">\n";
5090                                 } else {
5091                                         print "<tr class=\"light\">\n";
5092                                 }
5093                                 print "<td class=\"list\">".
5094                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5095                                                                file_name=>"$file"),
5096                                                 -class => "list"}, esc_path($file));
5097                                 print "</td><td>\n";
5098                                 $lastfile = $file;
5099                         }
5100                         if ($binary) {
5101                                 print "<div class=\"binary\">Binary file</div>\n";
5102                         } else {
5103                                 $ltext = untabify($ltext);
5104                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5105                                         $ltext = esc_html($1, -nbsp=>1);
5106                                         $ltext .= '<span class="match">';
5107                                         $ltext .= esc_html($2, -nbsp=>1);
5108                                         $ltext .= '</span>';
5109                                         $ltext .= esc_html($3, -nbsp=>1);
5110                                 } else {
5111                                         $ltext = esc_html($ltext, -nbsp=>1);
5112                                 }
5113                                 print "<div class=\"pre\">" .
5114                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5115                                                                file_name=>"$file").'#l'.$lno,
5116                                                 -class => "linenr"}, sprintf('%4i', $lno))
5117                                         . ' ' .  $ltext . "</div>\n";
5118                         }
5119                 }
5120                 if ($lastfile) {
5121                         print "</td></tr>\n";
5122                         if ($matches > 1000) {
5123                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5124                         }
5125                 } else {
5126                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5127                 }
5128                 close $fd;
5129
5130                 print "</table>\n";
5131         }
5132         git_footer_html();
5133 }
5134
5135 sub git_search_help {
5136         git_header_html();
5137         git_print_page_nav('','', $hash,$hash,$hash);
5138         print <<EOT;
5139 <dl>
5140 <dt><b>commit</b></dt>
5141 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5142 EOT
5143         my ($have_grep) = gitweb_check_feature('grep');
5144         if ($have_grep) {
5145                 print <<EOT;
5146 <dt><b>grep</b></dt>
5147 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5148     a different one) are searched for the given
5149 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5150 (POSIX extended) and the matches are listed. On large
5151 trees, this search can take a while and put some strain on the server, so please use it with
5152 some consideration.</dd>
5153 EOT
5154         }
5155         print <<EOT;
5156 <dt><b>author</b></dt>
5157 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5158 <dt><b>committer</b></dt>
5159 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5160 EOT
5161         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5162         if ($have_pickaxe) {
5163                 print <<EOT;
5164 <dt><b>pickaxe</b></dt>
5165 <dd>All commits that caused the string to appear or disappear from any file (changes that
5166 added, removed or "modified" the string) will be listed. This search can take a while and
5167 takes a lot of strain on the server, so please use it wisely.</dd>
5168 EOT
5169         }
5170         print "</dl>\n";
5171         git_footer_html();
5172 }
5173
5174 sub git_shortlog {
5175         my $head = git_get_head_hash($project);
5176         if (!defined $hash) {
5177                 $hash = $head;
5178         }
5179         if (!defined $page) {
5180                 $page = 0;
5181         }
5182         my $refs = git_get_references();
5183
5184         my @commitlist = parse_commits($hash, 101, (100 * $page));
5185
5186         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5187         my $next_link = '';
5188         if ($#commitlist >= 100) {
5189                 $next_link =
5190                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5191                                  -accesskey => "n", -title => "Alt-n"}, "next");
5192         }
5193
5194         git_header_html();
5195         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5196         git_print_header_div('summary', $project);
5197
5198         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5199
5200         git_footer_html();
5201 }
5202
5203 ## ......................................................................
5204 ## feeds (RSS, Atom; OPML)
5205
5206 sub git_feed {
5207         my $format = shift || 'atom';
5208         my ($have_blame) = gitweb_check_feature('blame');
5209
5210         # Atom: http://www.atomenabled.org/developers/syndication/
5211         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5212         if ($format ne 'rss' && $format ne 'atom') {
5213                 die_error(undef, "Unknown web feed format");
5214         }
5215
5216         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5217         my $head = $hash || 'HEAD';
5218         my @commitlist = parse_commits($head, 150);
5219
5220         my %latest_commit;
5221         my %latest_date;
5222         my $content_type = "application/$format+xml";
5223         if (defined $cgi->http('HTTP_ACCEPT') &&
5224                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5225                 # browser (feed reader) prefers text/xml
5226                 $content_type = 'text/xml';
5227         }
5228         if (defined($commitlist[0])) {
5229                 %latest_commit = %{$commitlist[0]};
5230                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5231                 print $cgi->header(
5232                         -type => $content_type,
5233                         -charset => 'utf-8',
5234                         -last_modified => $latest_date{'rfc2822'});
5235         } else {
5236                 print $cgi->header(
5237                         -type => $content_type,
5238                         -charset => 'utf-8');
5239         }
5240
5241         # Optimization: skip generating the body if client asks only
5242         # for Last-Modified date.
5243         return if ($cgi->request_method() eq 'HEAD');
5244
5245         # header variables
5246         my $title = "$site_name - $project/$action";
5247         my $feed_type = 'log';
5248         if (defined $hash) {
5249                 $title .= " - '$hash'";
5250                 $feed_type = 'branch log';
5251                 if (defined $file_name) {
5252                         $title .= " :: $file_name";
5253                         $feed_type = 'history';
5254                 }
5255         } elsif (defined $file_name) {
5256                 $title .= " - $file_name";
5257                 $feed_type = 'history';
5258         }
5259         $title .= " $feed_type";
5260         my $descr = git_get_project_description($project);
5261         if (defined $descr) {
5262                 $descr = esc_html($descr);
5263         } else {
5264                 $descr = "$project " .
5265                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5266                          " feed";
5267         }
5268         my $owner = git_get_project_owner($project);
5269         $owner = esc_html($owner);
5270
5271         #header
5272         my $alt_url;
5273         if (defined $file_name) {
5274                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5275         } elsif (defined $hash) {
5276                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5277         } else {
5278                 $alt_url = href(-full=>1, action=>"summary");
5279         }
5280         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5281         if ($format eq 'rss') {
5282                 print <<XML;
5283 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5284 <channel>
5285 XML
5286                 print "<title>$title</title>\n" .
5287                       "<link>$alt_url</link>\n" .
5288                       "<description>$descr</description>\n" .
5289                       "<language>en</language>\n";
5290         } elsif ($format eq 'atom') {
5291                 print <<XML;
5292 <feed xmlns="http://www.w3.org/2005/Atom">
5293 XML
5294                 print "<title>$title</title>\n" .
5295                       "<subtitle>$descr</subtitle>\n" .
5296                       '<link rel="alternate" type="text/html" href="' .
5297                       $alt_url . '" />' . "\n" .
5298                       '<link rel="self" type="' . $content_type . '" href="' .
5299                       $cgi->self_url() . '" />' . "\n" .
5300                       "<id>" . href(-full=>1) . "</id>\n" .
5301                       # use project owner for feed author
5302                       "<author><name>$owner</name></author>\n";
5303                 if (defined $favicon) {
5304                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5305                 }
5306                 if (defined $logo_url) {
5307                         # not twice as wide as tall: 72 x 27 pixels
5308                         print "<logo>" . esc_url($logo) . "</logo>\n";
5309                 }
5310                 if (! %latest_date) {
5311                         # dummy date to keep the feed valid until commits trickle in:
5312                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5313                 } else {
5314                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5315                 }
5316         }
5317
5318         # contents
5319         for (my $i = 0; $i <= $#commitlist; $i++) {
5320                 my %co = %{$commitlist[$i]};
5321                 my $commit = $co{'id'};
5322                 # we read 150, we always show 30 and the ones more recent than 48 hours
5323                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5324                         last;
5325                 }
5326                 my %cd = parse_date($co{'author_epoch'});
5327
5328                 # get list of changed files
5329                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5330                         $co{'parent'} || "--root",
5331                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5332                         or next;
5333                 my @difftree = map { chomp; $_ } <$fd>;
5334                 close $fd
5335                         or next;
5336
5337                 # print element (entry, item)
5338                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5339                 if ($format eq 'rss') {
5340                         print "<item>\n" .
5341                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5342                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5343                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5344                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5345                               "<link>$co_url</link>\n" .
5346                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5347                               "<content:encoded>" .
5348                               "<![CDATA[\n";
5349                 } elsif ($format eq 'atom') {
5350                         print "<entry>\n" .
5351                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5352                               "<updated>$cd{'iso-8601'}</updated>\n" .
5353                               "<author>\n" .
5354                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5355                         if ($co{'author_email'}) {
5356                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5357                         }
5358                         print "</author>\n" .
5359                               # use committer for contributor
5360                               "<contributor>\n" .
5361                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5362                         if ($co{'committer_email'}) {
5363                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5364                         }
5365                         print "</contributor>\n" .
5366                               "<published>$cd{'iso-8601'}</published>\n" .
5367                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5368                               "<id>$co_url</id>\n" .
5369                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5370                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5371                 }
5372                 my $comment = $co{'comment'};
5373                 print "<pre>\n";
5374                 foreach my $line (@$comment) {
5375                         $line = esc_html($line);
5376                         print "$line\n";
5377                 }
5378                 print "</pre><ul>\n";
5379                 foreach my $difftree_line (@difftree) {
5380                         my %difftree = parse_difftree_raw_line($difftree_line);
5381                         next if !$difftree{'from_id'};
5382
5383                         my $file = $difftree{'file'} || $difftree{'to_file'};
5384
5385                         print "<li>" .
5386                               "[" .
5387                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5388                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5389                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5390                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5391                                       -title => "diff"}, 'D');
5392                         if ($have_blame) {
5393                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5394                                                              file_name=>$file, hash_base=>$commit),
5395                                               -title => "blame"}, 'B');
5396                         }
5397                         # if this is not a feed of a file history
5398                         if (!defined $file_name || $file_name ne $file) {
5399                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5400                                                              file_name=>$file, hash=>$commit),
5401                                               -title => "history"}, 'H');
5402                         }
5403                         $file = esc_path($file);
5404                         print "] ".
5405                               "$file</li>\n";
5406                 }
5407                 if ($format eq 'rss') {
5408                         print "</ul>]]>\n" .
5409                               "</content:encoded>\n" .
5410                               "</item>\n";
5411                 } elsif ($format eq 'atom') {
5412                         print "</ul>\n</div>\n" .
5413                               "</content>\n" .
5414                               "</entry>\n";
5415                 }
5416         }
5417
5418         # end of feed
5419         if ($format eq 'rss') {
5420                 print "</channel>\n</rss>\n";
5421         }       elsif ($format eq 'atom') {
5422                 print "</feed>\n";
5423         }
5424 }
5425
5426 sub git_rss {
5427         git_feed('rss');
5428 }
5429
5430 sub git_atom {
5431         git_feed('atom');
5432 }
5433
5434 sub git_opml {
5435         my @list = git_get_projects_list();
5436
5437         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5438         print <<XML;
5439 <?xml version="1.0" encoding="utf-8"?>
5440 <opml version="1.0">
5441 <head>
5442   <title>$site_name OPML Export</title>
5443 </head>
5444 <body>
5445 <outline text="git RSS feeds">
5446 XML
5447
5448         foreach my $pr (@list) {
5449                 my %proj = %$pr;
5450                 my $head = git_get_head_hash($proj{'path'});
5451                 if (!defined $head) {
5452                         next;
5453                 }
5454                 $git_dir = "$projectroot/$proj{'path'}";
5455                 my %co = parse_commit($head);
5456                 if (!%co) {
5457                         next;
5458                 }
5459
5460                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5461                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5462                 my $html = "$my_url?p=$proj{'path'};a=summary";
5463                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5464         }
5465         print <<XML;
5466 </outline>
5467 </body>
5468 </opml>
5469 XML
5470 }