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 my %allowed_options = (
 390         "--no-merges" => [ qw(rss atom log shortlog history) ],
 391 );
 392
 393 our @extra_options = $cgi->param('opt');
 394 if (defined @extra_options) {
 395         foreach(@extra_options)
 396         {
 397                 if (not grep(/^$_$/, keys %allowed_options)) {
 398                         die_error(undef, "Invalid option parameter");
 399                 }
 400                 if (not grep(/^$action$/, @{$allowed_options{$_}})) {
 401                         die_error(undef, "Invalid option parameter for this action");
 402                 }
 403         }
 404 }
 405
 406 our $hash_parent_base = $cgi->param('hpb');
 407 if (defined $hash_parent_base) {
 408         if (!validate_refname($hash_parent_base)) {
 409                 die_error(undef, "Invalid hash parent base parameter");
 410         }
 411 }
 412
 413 # other parameters
 414 our $page = $cgi->param('pg');
 415 if (defined $page) {
 416         if ($page =~ m/[^0-9]/) {
 417                 die_error(undef, "Invalid page parameter");
 418         }
 419 }
 420
 421 our $searchtype = $cgi->param('st');
 422 if (defined $searchtype) {
 423         if ($searchtype =~ m/[^a-z]/) {
 424                 die_error(undef, "Invalid searchtype parameter");
 425         }
 426 }
 427
 428 our $searchtext = $cgi->param('s');
 429 our $search_regexp;
 430 if (defined $searchtext) {
 431         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 432                 die_error(undef, "Invalid search parameter");
 433         }
 434         if (length($searchtext) < 2) {
 435                 die_error(undef, "At least two characters are required for search parameter");
 436         }
 437         $search_regexp = quotemeta $searchtext;
 438 }
 439
 440 # now read PATH_INFO and use it as alternative to parameters
 441 sub evaluate_path_info {
 442         return if defined $project;
 443         my $path_info = $ENV{"PATH_INFO"};
 444         return if !$path_info;
 445         $path_info =~ s,^/+,,;
 446         return if !$path_info;
 447         # find which part of PATH_INFO is project
 448         $project = $path_info;
 449         $project =~ s,/+$,,;
 450         while ($project && !check_head_link("$projectroot/$project")) {
 451                 $project =~ s,/*[^/]*$,,;
 452         }
 453         # validate project
 454         $project = validate_pathname($project);
 455         if (!$project ||
 456             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 457             ($strict_export && !project_in_list($project))) {
 458                 undef $project;
 459                 return;
 460         }
 461         # do not change any parameters if an action is given using the query string
 462         return if $action;
 463         $path_info =~ s,^$project/*,,;
 464         my ($refname, $pathname) = split(/:/, $path_info, 2);
 465         if (defined $pathname) {
 466                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 467                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 468                 $pathname =~ s,^/+,,;
 469                 if (!$pathname || substr($pathname, -1) eq "/") {
 470                         $action  ||= "tree";
 471                         $pathname =~ s,/$,,;
 472                 } else {
 473                         $action  ||= "blob_plain";
 474                 }
 475                 $hash_base ||= validate_refname($refname);
 476                 $file_name ||= validate_pathname($pathname);
 477         } elsif (defined $refname) {
 478                 # we got "project.git/branch"
 479                 $action ||= "shortlog";
 480                 $hash   ||= validate_refname($refname);
 481         }
 482 }
 483 evaluate_path_info();
 484
 485 # path to the current git repository
 486 our $git_dir;
 487 $git_dir = "$projectroot/$project" if $project;
 488
 489 # dispatch
 490 my %actions = (
 491         "blame" => \&git_blame2,
 492         "blobdiff" => \&git_blobdiff,
 493         "blobdiff_plain" => \&git_blobdiff_plain,
 494         "blob" => \&git_blob,
 495         "blob_plain" => \&git_blob_plain,
 496         "commitdiff" => \&git_commitdiff,
 497         "commitdiff_plain" => \&git_commitdiff_plain,
 498         "commit" => \&git_commit,
 499         "forks" => \&git_forks,
 500         "heads" => \&git_heads,
 501         "history" => \&git_history,
 502         "log" => \&git_log,
 503         "rss" => \&git_rss,
 504         "atom" => \&git_atom,
 505         "search" => \&git_search,
 506         "search_help" => \&git_search_help,
 507         "shortlog" => \&git_shortlog,
 508         "summary" => \&git_summary,
 509         "tag" => \&git_tag,
 510         "tags" => \&git_tags,
 511         "tree" => \&git_tree,
 512         "snapshot" => \&git_snapshot,
 513         "object" => \&git_object,
 514         # those below don't need $project
 515         "opml" => \&git_opml,
 516         "project_list" => \&git_project_list,
 517         "project_index" => \&git_project_index,
 518 );
 519
 520 if (!defined $action) {
 521         if (defined $hash) {
 522                 $action = git_get_type($hash);
 523         } elsif (defined $hash_base && defined $file_name) {
 524                 $action = git_get_type("$hash_base:$file_name");
 525         } elsif (defined $project) {
 526                 $action = 'summary';
 527         } else {
 528                 $action = 'project_list';
 529         }
 530 }
 531 if (!defined($actions{$action})) {
 532         die_error(undef, "Unknown action");
 533 }
 534 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 535     !$project) {
 536         die_error(undef, "Project needed");
 537 }
 538 $actions{$action}->();
 539 exit;
 540
 541 ## ======================================================================
 542 ## action links
 543
 544 sub href(%) {
 545         my %params = @_;
 546         # default is to use -absolute url() i.e. $my_uri
 547         my $href = $params{-full} ? $my_url : $my_uri;
 548
 549         # XXX: Warning: If you touch this, check the search form for updating,
 550         # too.
 551
 552         my @mapping = (
 553                 project => "p",
 554                 action => "a",
 555                 file_name => "f",
 556                 file_parent => "fp",
 557                 extra_options => "opt",
 558                 hash => "h",
 559                 hash_parent => "hp",
 560                 hash_base => "hb",
 561                 hash_parent_base => "hpb",
 562                 page => "pg",
 563                 order => "o",
 564                 searchtext => "s",
 565                 searchtype => "st",
 566         );
 567         my %mapping = @mapping;
 568
 569         $params{'project'} = $project unless exists $params{'project'};
 570
 571         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 572         if ($use_pathinfo) {
 573                 # use PATH_INFO for project name
 574                 $href .= "/$params{'project'}" if defined $params{'project'};
 575                 delete $params{'project'};
 576
 577                 # Summary just uses the project path URL
 578                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 579                         delete $params{'action'};
 580                 }
 581         }
 582
 583         # now encode the parameters explicitly
 584         my @result = ();
 585         for (my $i = 0; $i < @mapping; $i += 2) {
 586                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 587                 if (defined $params{$name}) {
 588                         push @result, $symbol . "=" . esc_param($params{$name});
 589                 }
 590         }
 591         $href .= "?" . join(';', @result) if scalar @result;
 592
 593         return $href;
 594 }
 595
 596
 597 ## ======================================================================
 598 ## validation, quoting/unquoting and escaping
 599
 600 sub validate_pathname {
 601         my $input = shift || return undef;
 602
 603         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 604         # at the beginning, at the end, and between slashes.
 605         # also this catches doubled slashes
 606         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 607                 return undef;
 608         }
 609         # no null characters
 610         if ($input =~ m!\0!) {
 611                 return undef;
 612         }
 613         return $input;
 614 }
 615
 616 sub validate_refname {
 617         my $input = shift || return undef;
 618
 619         # textual hashes are O.K.
 620         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 621                 return $input;
 622         }
 623         # it must be correct pathname
 624         $input = validate_pathname($input)
 625                 or return undef;
 626         # restrictions on ref name according to git-check-ref-format
 627         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 628                 return undef;
 629         }
 630         return $input;
 631 }
 632
 633 # decode sequences of octets in utf8 into Perl's internal form,
 634 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 635 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 636 sub to_utf8 {
 637         my $str = shift;
 638         my $res;
 639         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 640         if (defined $res) {
 641                 return $res;
 642         } else {
 643                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 644         }
 645 }
 646
 647 # quote unsafe chars, but keep the slash, even when it's not
 648 # correct, but quoted slashes look too horrible in bookmarks
 649 sub esc_param {
 650         my $str = shift;
 651         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 652         $str =~ s/\+/%2B/g;
 653         $str =~ s/ /\+/g;
 654         return $str;
 655 }
 656
 657 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 658 sub esc_url {
 659         my $str = shift;
 660         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 661         $str =~ s/\+/%2B/g;
 662         $str =~ s/ /\+/g;
 663         return $str;
 664 }
 665
 666 # replace invalid utf8 character with SUBSTITUTION sequence
 667 sub esc_html ($;%) {
 668         my $str = shift;
 669         my %opts = @_;
 670
 671         $str = to_utf8($str);
 672         $str = $cgi->escapeHTML($str);
 673         if ($opts{'-nbsp'}) {
 674                 $str =~ s/ /&nbsp;/g;
 675         }
 676         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 677         return $str;
 678 }
 679
 680 # quote control characters and escape filename to HTML
 681 sub esc_path {
 682         my $str = shift;
 683         my %opts = @_;
 684
 685         $str = to_utf8($str);
 686         $str = $cgi->escapeHTML($str);
 687         if ($opts{'-nbsp'}) {
 688                 $str =~ s/ /&nbsp;/g;
 689         }
 690         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 691         return $str;
 692 }
 693
 694 # Make control characters "printable", using character escape codes (CEC)
 695 sub quot_cec {
 696         my $cntrl = shift;
 697         my %es = ( # character escape codes, aka escape sequences
 698                    "\t" => '\t',   # tab            (HT)
 699                    "\n" => '\n',   # line feed      (LF)
 700                    "\r" => '\r',   # carrige return (CR)
 701                    "\f" => '\f',   # form feed      (FF)
 702                    "\b" => '\b',   # backspace      (BS)
 703                    "\a" => '\a',   # alarm (bell)   (BEL)
 704                    "\e" => '\e',   # escape         (ESC)
 705                    "\013" => '\v', # vertical tab   (VT)
 706                    "\000" => '\0', # nul character  (NUL)
 707                    );
 708         my $chr = ( (exists $es{$cntrl})
 709                     ? $es{$cntrl}
 710                     : sprintf('\%03o', ord($cntrl)) );
 711         return "<span class=\"cntrl\">$chr</span>";
 712 }
 713
 714 # Alternatively use unicode control pictures codepoints,
 715 # Unicode "printable representation" (PR)
 716 sub quot_upr {
 717         my $cntrl = shift;
 718         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 719         return "<span class=\"cntrl\">$chr</span>";
 720 }
 721
 722 # git may return quoted and escaped filenames
 723 sub unquote {
 724         my $str = shift;
 725
 726         sub unq {
 727                 my $seq = shift;
 728                 my %es = ( # character escape codes, aka escape sequences
 729                         't' => "\t",   # tab            (HT, TAB)
 730                         'n' => "\n",   # newline        (NL)
 731                         'r' => "\r",   # return         (CR)
 732                         'f' => "\f",   # form feed      (FF)
 733                         'b' => "\b",   # backspace      (BS)
 734                         'a' => "\a",   # alarm (bell)   (BEL)
 735                         'e' => "\e",   # escape         (ESC)
 736                         'v' => "\013", # vertical tab   (VT)
 737                 );
 738
 739                 if ($seq =~ m/^[0-7]{1,3}$/) {
 740                         # octal char sequence
 741                         return chr(oct($seq));
 742                 } elsif (exists $es{$seq}) {
 743                         # C escape sequence, aka character escape code
 744                         return $es{$seq}
 745                 }
 746                 # quoted ordinary character
 747                 return $seq;
 748         }
 749
 750         if ($str =~ m/^"(.*)"$/) {
 751                 # needs unquoting
 752                 $str = $1;
 753                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 754         }
 755         return $str;
 756 }
 757
 758 # escape tabs (convert tabs to spaces)
 759 sub untabify {
 760         my $line = shift;
 761
 762         while ((my $pos = index($line, "\t")) != -1) {
 763                 if (my $count = (8 - ($pos % 8))) {
 764                         my $spaces = ' ' x $count;
 765                         $line =~ s/\t/$spaces/;
 766                 }
 767         }
 768
 769         return $line;
 770 }
 771
 772 sub project_in_list {
 773         my $project = shift;
 774         my @list = git_get_projects_list();
 775         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 776 }
 777
 778 ## ----------------------------------------------------------------------
 779 ## HTML aware string manipulation
 780
 781 sub chop_str {
 782         my $str = shift;
 783         my $len = shift;
 784         my $add_len = shift || 10;
 785
 786         # allow only $len chars, but don't cut a word if it would fit in $add_len
 787         # if it doesn't fit, cut it if it's still longer than the dots we would add
 788         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 789         my $body = $1;
 790         my $tail = $2;
 791         if (length($tail) > 4) {
 792                 $tail = " ...";
 793                 $body =~ s/&[^;]*$//; # remove chopped character entities
 794         }
 795         return "$body$tail";
 796 }
 797
 798 ## ----------------------------------------------------------------------
 799 ## functions returning short strings
 800
 801 # CSS class for given age value (in seconds)
 802 sub age_class {
 803         my $age = shift;
 804
 805         if (!defined $age) {
 806                 return "noage";
 807         } elsif ($age < 60*60*2) {
 808                 return "age0";
 809         } elsif ($age < 60*60*24*2) {
 810                 return "age1";
 811         } else {
 812                 return "age2";
 813         }
 814 }
 815
 816 # convert age in seconds to "nn units ago" string
 817 sub age_string {
 818         my $age = shift;
 819         my $age_str;
 820
 821         if ($age > 60*60*24*365*2) {
 822                 $age_str = (int $age/60/60/24/365);
 823                 $age_str .= " years ago";
 824         } elsif ($age > 60*60*24*(365/12)*2) {
 825                 $age_str = int $age/60/60/24/(365/12);
 826                 $age_str .= " months ago";
 827         } elsif ($age > 60*60*24*7*2) {
 828                 $age_str = int $age/60/60/24/7;
 829                 $age_str .= " weeks ago";
 830         } elsif ($age > 60*60*24*2) {
 831                 $age_str = int $age/60/60/24;
 832                 $age_str .= " days ago";
 833         } elsif ($age > 60*60*2) {
 834                 $age_str = int $age/60/60;
 835                 $age_str .= " hours ago";
 836         } elsif ($age > 60*2) {
 837                 $age_str = int $age/60;
 838                 $age_str .= " min ago";
 839         } elsif ($age > 2) {
 840                 $age_str = int $age;
 841                 $age_str .= " sec ago";
 842         } else {
 843                 $age_str .= " right now";
 844         }
 845         return $age_str;
 846 }
 847
 848 # convert file mode in octal to symbolic file mode string
 849 sub mode_str {
 850         my $mode = oct shift;
 851
 852         if (S_ISDIR($mode & S_IFMT)) {
 853                 return 'drwxr-xr-x';
 854         } elsif (S_ISLNK($mode)) {
 855                 return 'lrwxrwxrwx';
 856         } elsif (S_ISREG($mode)) {
 857                 # git cares only about the executable bit
 858                 if ($mode & S_IXUSR) {
 859                         return '-rwxr-xr-x';
 860                 } else {
 861                         return '-rw-r--r--';
 862                 };
 863         } else {
 864                 return '----------';
 865         }
 866 }
 867
 868 # convert file mode in octal to file type string
 869 sub file_type {
 870         my $mode = shift;
 871
 872         if ($mode !~ m/^[0-7]+$/) {
 873                 return $mode;
 874         } else {
 875                 $mode = oct $mode;
 876         }
 877
 878         if (S_ISDIR($mode & S_IFMT)) {
 879                 return "directory";
 880         } elsif (S_ISLNK($mode)) {
 881                 return "symlink";
 882         } elsif (S_ISREG($mode)) {
 883                 return "file";
 884         } else {
 885                 return "unknown";
 886         }
 887 }
 888
 889 # convert file mode in octal to file type description string
 890 sub file_type_long {
 891         my $mode = shift;
 892
 893         if ($mode !~ m/^[0-7]+$/) {
 894                 return $mode;
 895         } else {
 896                 $mode = oct $mode;
 897         }
 898
 899         if (S_ISDIR($mode & S_IFMT)) {
 900                 return "directory";
 901         } elsif (S_ISLNK($mode)) {
 902                 return "symlink";
 903         } elsif (S_ISREG($mode)) {
 904                 if ($mode & S_IXUSR) {
 905                         return "executable";
 906                 } else {
 907                         return "file";
 908                 };
 909         } else {
 910                 return "unknown";
 911         }
 912 }
 913
 914
 915 ## ----------------------------------------------------------------------
 916 ## functions returning short HTML fragments, or transforming HTML fragments
 917 ## which don't belong to other sections
 918
 919 # format line of commit message.
 920 sub format_log_line_html {
 921         my $line = shift;
 922
 923         $line = esc_html($line, -nbsp=>1);
 924         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 925                 my $hash_text = $1;
 926                 my $link =
 927                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 928                                 -class => "text"}, $hash_text);
 929                 $line =~ s/$hash_text/$link/;
 930         }
 931         return $line;
 932 }
 933
 934 # format marker of refs pointing to given object
 935 sub format_ref_marker {
 936         my ($refs, $id) = @_;
 937         my $markers = '';
 938
 939         if (defined $refs->{$id}) {
 940                 foreach my $ref (@{$refs->{$id}}) {
 941                         my ($type, $name) = qw();
 942                         # e.g. tags/v2.6.11 or heads/next
 943                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 944                                 $type = $1;
 945                                 $name = $2;
 946                         } else {
 947                                 $type = "ref";
 948                                 $name = $ref;
 949                         }
 950
 951                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 952                                     esc_html($name) . "</span>";
 953                 }
 954         }
 955
 956         if ($markers) {
 957                 return ' <span class="refs">'. $markers . '</span>';
 958         } else {
 959                 return "";
 960         }
 961 }
 962
 963 # format, perhaps shortened and with markers, title line
 964 sub format_subject_html {
 965         my ($long, $short, $href, $extra) = @_;
 966         $extra = '' unless defined($extra);
 967
 968         if (length($short) < length($long)) {
 969                 return $cgi->a({-href => $href, -class => "list subject",
 970                                 -title => to_utf8($long)},
 971                        esc_html($short) . $extra);
 972         } else {
 973                 return $cgi->a({-href => $href, -class => "list subject"},
 974                        esc_html($long)  . $extra);
 975         }
 976 }
 977
 978 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 979 sub format_git_diff_header_line {
 980         my $line = shift;
 981         my $diffinfo = shift;
 982         my ($from, $to) = @_;
 983
 984         if ($diffinfo->{'nparents'}) {
 985                 # combined diff
 986                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 987                 if ($to->{'href'}) {
 988                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 989                                          esc_path($to->{'file'}));
 990                 } else { # file was deleted (no href)
 991                         $line .= esc_path($to->{'file'});
 992                 }
 993         } else {
 994                 # "ordinary" diff
 995                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 996                 if ($from->{'href'}) {
 997                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 998                                          'a/' . esc_path($from->{'file'}));
 999                 } else { # file was added (no href)
1000                         $line .= 'a/' . esc_path($from->{'file'});
1001                 }
1002                 $line .= ' ';
1003                 if ($to->{'href'}) {
1004                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1005                                          'b/' . esc_path($to->{'file'}));
1006                 } else { # file was deleted
1007                         $line .= 'b/' . esc_path($to->{'file'});
1008                 }
1009         }
1010
1011         return "<div class=\"diff header\">$line</div>\n";
1012 }
1013
1014 # format extended diff header line, before patch itself
1015 sub format_extended_diff_header_line {
1016         my $line = shift;
1017         my $diffinfo = shift;
1018         my ($from, $to) = @_;
1019
1020         # match <path>
1021         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1022                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1023                                        esc_path($from->{'file'}));
1024         }
1025         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1026                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1027                                  esc_path($to->{'file'}));
1028         }
1029         # match single <mode>
1030         if ($line =~ m/\s(\d{6})$/) {
1031                 $line .= '<span class="info"> (' .
1032                          file_type_long($1) .
1033                          ')</span>';
1034         }
1035         # match <hash>
1036         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1037                 # can match only for combined diff
1038                 $line = 'index ';
1039                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1040                         if ($from->{'href'}[$i]) {
1041                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1042                                                   -class=>"hash"},
1043                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1044                         } else {
1045                                 $line .= '0' x 7;
1046                         }
1047                         # separator
1048                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1049                 }
1050                 $line .= '..';
1051                 if ($to->{'href'}) {
1052                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1053                                          substr($diffinfo->{'to_id'},0,7));
1054                 } else {
1055                         $line .= '0' x 7;
1056                 }
1057
1058         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1059                 # can match only for ordinary diff
1060                 my ($from_link, $to_link);
1061                 if ($from->{'href'}) {
1062                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1063                                              substr($diffinfo->{'from_id'},0,7));
1064                 } else {
1065                         $from_link = '0' x 7;
1066                 }
1067                 if ($to->{'href'}) {
1068                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1069                                            substr($diffinfo->{'to_id'},0,7));
1070                 } else {
1071                         $to_link = '0' x 7;
1072                 }
1073                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1074                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1075         }
1076
1077         return $line . "<br/>\n";
1078 }
1079
1080 # format from-file/to-file diff header
1081 sub format_diff_from_to_header {
1082         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1083         my $line;
1084         my $result = '';
1085
1086         $line = $from_line;
1087         #assert($line =~ m/^---/) if DEBUG;
1088         # no extra formatting for "^--- /dev/null"
1089         if (! $diffinfo->{'nparents'}) {
1090                 # ordinary (single parent) diff
1091                 if ($line =~ m!^--- "?a/!) {
1092                         if ($from->{'href'}) {
1093                                 $line = '--- a/' .
1094                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1095                                                 esc_path($from->{'file'}));
1096                         } else {
1097                                 $line = '--- a/' .
1098                                         esc_path($from->{'file'});
1099                         }
1100                 }
1101                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1102
1103         } else {
1104                 # combined diff (merge commit)
1105                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1106                         if ($from->{'href'}[$i]) {
1107                                 $line = '--- ' .
1108                                         $cgi->a({-href=>href(action=>"blobdiff",
1109                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1110                                                              hash_parent_base=>$parents[$i],
1111                                                              file_parent=>$from->{'file'}[$i],
1112                                                              hash=>$diffinfo->{'to_id'},
1113                                                              hash_base=>$hash,
1114                                                              file_name=>$to->{'file'}),
1115                                                  -class=>"path",
1116                                                  -title=>"diff" . ($i+1)},
1117                                                 $i+1) .
1118                                         '/' .
1119                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1120                                                 esc_path($from->{'file'}[$i]));
1121                         } else {
1122                                 $line = '--- /dev/null';
1123                         }
1124                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1125                 }
1126         }
1127
1128         $line = $to_line;
1129         #assert($line =~ m/^\+\+\+/) if DEBUG;
1130         # no extra formatting for "^+++ /dev/null"
1131         if ($line =~ m!^\+\+\+ "?b/!) {
1132                 if ($to->{'href'}) {
1133                         $line = '+++ b/' .
1134                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1135                                         esc_path($to->{'file'}));
1136                 } else {
1137                         $line = '+++ b/' .
1138                                 esc_path($to->{'file'});
1139                 }
1140         }
1141         $result .= qq!<div class="diff to_file">$line</div>\n!;
1142
1143         return $result;
1144 }
1145
1146 # create note for patch simplified by combined diff
1147 sub format_diff_cc_simplified {
1148         my ($diffinfo, @parents) = @_;
1149         my $result = '';
1150
1151         $result .= "<div class=\"diff header\">" .
1152                    "diff --cc ";
1153         if (!is_deleted($diffinfo)) {
1154                 $result .= $cgi->a({-href => href(action=>"blob",
1155                                                   hash_base=>$hash,
1156                                                   hash=>$diffinfo->{'to_id'},
1157                                                   file_name=>$diffinfo->{'to_file'}),
1158                                     -class => "path"},
1159                                    esc_path($diffinfo->{'to_file'}));
1160         } else {
1161                 $result .= esc_path($diffinfo->{'to_file'});
1162         }
1163         $result .= "</div>\n" . # class="diff header"
1164                    "<div class=\"diff nodifferences\">" .
1165                    "Simple merge" .
1166                    "</div>\n"; # class="diff nodifferences"
1167
1168         return $result;
1169 }
1170
1171 # format patch (diff) line (not to be used for diff headers)
1172 sub format_diff_line {
1173         my $line = shift;
1174         my ($from, $to) = @_;
1175         my $diff_class = "";
1176
1177         chomp $line;
1178
1179         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1180                 # combined diff
1181                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1182                 if ($line =~ m/^\@{3}/) {
1183                         $diff_class = " chunk_header";
1184                 } elsif ($line =~ m/^\\/) {
1185                         $diff_class = " incomplete";
1186                 } elsif ($prefix =~ tr/+/+/) {
1187                         $diff_class = " add";
1188                 } elsif ($prefix =~ tr/-/-/) {
1189                         $diff_class = " rem";
1190                 }
1191         } else {
1192                 # assume ordinary diff
1193                 my $char = substr($line, 0, 1);
1194                 if ($char eq '+') {
1195                         $diff_class = " add";
1196                 } elsif ($char eq '-') {
1197                         $diff_class = " rem";
1198                 } elsif ($char eq '@') {
1199                         $diff_class = " chunk_header";
1200                 } elsif ($char eq "\\") {
1201                         $diff_class = " incomplete";
1202                 }
1203         }
1204         $line = untabify($line);
1205         if ($from && $to && $line =~ m/^\@{2} /) {
1206                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1207                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1208
1209                 $from_lines = 0 unless defined $from_lines;
1210                 $to_lines   = 0 unless defined $to_lines;
1211
1212                 if ($from->{'href'}) {
1213                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1214                                              -class=>"list"}, $from_text);
1215                 }
1216                 if ($to->{'href'}) {
1217                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1218                                              -class=>"list"}, $to_text);
1219                 }
1220                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1221                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1222                 return "<div class=\"diff$diff_class\">$line</div>\n";
1223         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1224                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1225                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1226
1227                 @from_text = split(' ', $ranges);
1228                 for (my $i = 0; $i < @from_text; ++$i) {
1229                         ($from_start[$i], $from_nlines[$i]) =
1230                                 (split(',', substr($from_text[$i], 1)), 0);
1231                 }
1232
1233                 $to_text   = pop @from_text;
1234                 $to_start  = pop @from_start;
1235                 $to_nlines = pop @from_nlines;
1236
1237                 $line = "<span class=\"chunk_info\">$prefix ";
1238                 for (my $i = 0; $i < @from_text; ++$i) {
1239                         if ($from->{'href'}[$i]) {
1240                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1241                                                   -class=>"list"}, $from_text[$i]);
1242                         } else {
1243                                 $line .= $from_text[$i];
1244                         }
1245                         $line .= " ";
1246                 }
1247                 if ($to->{'href'}) {
1248                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1249                                           -class=>"list"}, $to_text);
1250                 } else {
1251                         $line .= $to_text;
1252                 }
1253                 $line .= " $prefix</span>" .
1254                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1255                 return "<div class=\"diff$diff_class\">$line</div>\n";
1256         }
1257         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1258 }
1259
1260 ## ----------------------------------------------------------------------
1261 ## git utility subroutines, invoking git commands
1262
1263 # returns path to the core git executable and the --git-dir parameter as list
1264 sub git_cmd {
1265         return $GIT, '--git-dir='.$git_dir;
1266 }
1267
1268 # returns path to the core git executable and the --git-dir parameter as string
1269 sub git_cmd_str {
1270         return join(' ', git_cmd());
1271 }
1272
1273 # get HEAD ref of given project as hash
1274 sub git_get_head_hash {
1275         my $project = shift;
1276         my $o_git_dir = $git_dir;
1277         my $retval = undef;
1278         $git_dir = "$projectroot/$project";
1279         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1280                 my $head = <$fd>;
1281                 close $fd;
1282                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1283                         $retval = $1;
1284                 }
1285         }
1286         if (defined $o_git_dir) {
1287                 $git_dir = $o_git_dir;
1288         }
1289         return $retval;
1290 }
1291
1292 # get type of given object
1293 sub git_get_type {
1294         my $hash = shift;
1295
1296         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1297         my $type = <$fd>;
1298         close $fd or return;
1299         chomp $type;
1300         return $type;
1301 }
1302
1303 sub git_get_project_config {
1304         my ($key, $type) = @_;
1305
1306         return unless ($key);
1307         $key =~ s/^gitweb\.//;
1308         return if ($key =~ m/\W/);
1309
1310         my @x = (git_cmd(), 'config');
1311         if (defined $type) { push @x, $type; }
1312         push @x, "--get";
1313         push @x, "gitweb.$key";
1314         my $val = qx(@x);
1315         chomp $val;
1316         return ($val);
1317 }
1318
1319 # get hash of given path at given ref
1320 sub git_get_hash_by_path {
1321         my $base = shift;
1322         my $path = shift || return undef;
1323         my $type = shift;
1324
1325         $path =~ s,/+$,,;
1326
1327         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1328                 or die_error(undef, "Open git-ls-tree failed");
1329         my $line = <$fd>;
1330         close $fd or return undef;
1331
1332         if (!defined $line) {
1333                 # there is no tree or hash given by $path at $base
1334                 return undef;
1335         }
1336
1337         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1338         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1339         if (defined $type && $type ne $2) {
1340                 # type doesn't match
1341                 return undef;
1342         }
1343         return $3;
1344 }
1345
1346 # get path of entry with given hash at given tree-ish (ref)
1347 # used to get 'from' filename for combined diff (merge commit) for renames
1348 sub git_get_path_by_hash {
1349         my $base = shift || return;
1350         my $hash = shift || return;
1351
1352         local $/ = "\0";
1353
1354         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1355                 or return undef;
1356         while (my $line = <$fd>) {
1357                 chomp $line;
1358
1359                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1360                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1361                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1362                         close $fd;
1363                         return $1;
1364                 }
1365         }
1366         close $fd;
1367         return undef;
1368 }
1369
1370 ## ......................................................................
1371 ## git utility functions, directly accessing git repository
1372
1373 sub git_get_project_description {
1374         my $path = shift;
1375
1376         open my $fd, "$projectroot/$path/description" or return undef;
1377         my $descr = <$fd>;
1378         close $fd;
1379         if (defined $descr) {
1380                 chomp $descr;
1381         }
1382         return $descr;
1383 }
1384
1385 sub git_get_project_url_list {
1386         my $path = shift;
1387
1388         open my $fd, "$projectroot/$path/cloneurl" or return;
1389         my @git_project_url_list = map { chomp; $_ } <$fd>;
1390         close $fd;
1391
1392         return wantarray ? @git_project_url_list : \@git_project_url_list;
1393 }
1394
1395 sub git_get_projects_list {
1396         my ($filter) = @_;
1397         my @list;
1398
1399         $filter ||= '';
1400         $filter =~ s/\.git$//;
1401
1402         my ($check_forks) = gitweb_check_feature('forks');
1403
1404         if (-d $projects_list) {
1405                 # search in directory
1406                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1407                 # remove the trailing "/"
1408                 $dir =~ s!/+$!!;
1409                 my $pfxlen = length("$dir");
1410
1411                 File::Find::find({
1412                         follow_fast => 1, # follow symbolic links
1413                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1414                         wanted => sub {
1415                                 # skip project-list toplevel, if we get it.
1416                                 return if (m!^[/.]$!);
1417                                 # only directories can be git repositories
1418                                 return unless (-d $_);
1419
1420                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1421                                 # we check related file in $projectroot
1422                                 if ($check_forks and $subdir =~ m#/.#) {
1423                                         $File::Find::prune = 1;
1424                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1425                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1426                                         $File::Find::prune = 1;
1427                                 }
1428                         },
1429                 }, "$dir");
1430
1431         } elsif (-f $projects_list) {
1432                 # read from file(url-encoded):
1433                 # 'git%2Fgit.git Linus+Torvalds'
1434                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1435                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1436                 my %paths;
1437                 open my ($fd), $projects_list or return;
1438         PROJECT:
1439                 while (my $line = <$fd>) {
1440                         chomp $line;
1441                         my ($path, $owner) = split ' ', $line;
1442                         $path = unescape($path);
1443                         $owner = unescape($owner);
1444                         if (!defined $path) {
1445                                 next;
1446                         }
1447                         if ($filter ne '') {
1448                                 # looking for forks;
1449                                 my $pfx = substr($path, 0, length($filter));
1450                                 if ($pfx ne $filter) {
1451                                         next PROJECT;
1452                                 }
1453                                 my $sfx = substr($path, length($filter));
1454                                 if ($sfx !~ /^\/.*\.git$/) {
1455                                         next PROJECT;
1456                                 }
1457                         } elsif ($check_forks) {
1458                         PATH:
1459                                 foreach my $filter (keys %paths) {
1460                                         # looking for forks;
1461                                         my $pfx = substr($path, 0, length($filter));
1462                                         if ($pfx ne $filter) {
1463                                                 next PATH;
1464                                         }
1465                                         my $sfx = substr($path, length($filter));
1466                                         if ($sfx !~ /^\/.*\.git$/) {
1467                                                 next PATH;
1468                                         }
1469                                         # is a fork, don't include it in
1470                                         # the list
1471                                         next PROJECT;
1472                                 }
1473                         }
1474                         if (check_export_ok("$projectroot/$path")) {
1475                                 my $pr = {
1476                                         path => $path,
1477                                         owner => to_utf8($owner),
1478                                 };
1479                                 push @list, $pr;
1480                                 (my $forks_path = $path) =~ s/\.git$//;
1481                                 $paths{$forks_path}++;
1482                         }
1483                 }
1484                 close $fd;
1485         }
1486         return @list;
1487 }
1488
1489 our $gitweb_project_owner = undef;
1490 sub git_get_project_list_from_file {
1491
1492         return if (defined $gitweb_project_owner);
1493
1494         $gitweb_project_owner = {};
1495         # read from file (url-encoded):
1496         # 'git%2Fgit.git Linus+Torvalds'
1497         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1498         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1499         if (-f $projects_list) {
1500                 open (my $fd , $projects_list);
1501                 while (my $line = <$fd>) {
1502                         chomp $line;
1503                         my ($pr, $ow) = split ' ', $line;
1504                         $pr = unescape($pr);
1505                         $ow = unescape($ow);
1506                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1507                 }
1508                 close $fd;
1509         }
1510 }
1511
1512 sub git_get_project_owner {
1513         my $project = shift;
1514         my $owner;
1515
1516         return undef unless $project;
1517
1518         if (!defined $gitweb_project_owner) {
1519                 git_get_project_list_from_file();
1520         }
1521
1522         if (exists $gitweb_project_owner->{$project}) {
1523                 $owner = $gitweb_project_owner->{$project};
1524         }
1525         if (!defined $owner) {
1526                 $owner = get_file_owner("$projectroot/$project");
1527         }
1528
1529         return $owner;
1530 }
1531
1532 sub git_get_last_activity {
1533         my ($path) = @_;
1534         my $fd;
1535
1536         $git_dir = "$projectroot/$path";
1537         open($fd, "-|", git_cmd(), 'for-each-ref',
1538              '--format=%(committer)',
1539              '--sort=-committerdate',
1540              '--count=1',
1541              'refs/heads') or return;
1542         my $most_recent = <$fd>;
1543         close $fd or return;
1544         if (defined $most_recent &&
1545             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1546                 my $timestamp = $1;
1547                 my $age = time - $timestamp;
1548                 return ($age, age_string($age));
1549         }
1550         return (undef, undef);
1551 }
1552
1553 sub git_get_references {
1554         my $type = shift || "";
1555         my %refs;
1556         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1557         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1558         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1559                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1560                 or return;
1561
1562         while (my $line = <$fd>) {
1563                 chomp $line;
1564                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1565                         if (defined $refs{$1}) {
1566                                 push @{$refs{$1}}, $2;
1567                         } else {
1568                                 $refs{$1} = [ $2 ];
1569                         }
1570                 }
1571         }
1572         close $fd or return;
1573         return \%refs;
1574 }
1575
1576 sub git_get_rev_name_tags {
1577         my $hash = shift || return undef;
1578
1579         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1580                 or return;
1581         my $name_rev = <$fd>;
1582         close $fd;
1583
1584         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1585                 return $1;
1586         } else {
1587                 # catches also '$hash undefined' output
1588                 return undef;
1589         }
1590 }
1591
1592 ## ----------------------------------------------------------------------
1593 ## parse to hash functions
1594
1595 sub parse_date {
1596         my $epoch = shift;
1597         my $tz = shift || "-0000";
1598
1599         my %date;
1600         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1601         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1602         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1603         $date{'hour'} = $hour;
1604         $date{'minute'} = $min;
1605         $date{'mday'} = $mday;
1606         $date{'day'} = $days[$wday];
1607         $date{'month'} = $months[$mon];
1608         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1609                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1610         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1611                              $mday, $months[$mon], $hour ,$min;
1612         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1613                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1614
1615         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1616         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1617         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1618         $date{'hour_local'} = $hour;
1619         $date{'minute_local'} = $min;
1620         $date{'tz_local'} = $tz;
1621         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1622                                   1900+$year, $mon+1, $mday,
1623                                   $hour, $min, $sec, $tz);
1624         return %date;
1625 }
1626
1627 sub parse_tag {
1628         my $tag_id = shift;
1629         my %tag;
1630         my @comment;
1631
1632         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1633         $tag{'id'} = $tag_id;
1634         while (my $line = <$fd>) {
1635                 chomp $line;
1636                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1637                         $tag{'object'} = $1;
1638                 } elsif ($line =~ m/^type (.+)$/) {
1639                         $tag{'type'} = $1;
1640                 } elsif ($line =~ m/^tag (.+)$/) {
1641                         $tag{'name'} = $1;
1642                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1643                         $tag{'author'} = $1;
1644                         $tag{'epoch'} = $2;
1645                         $tag{'tz'} = $3;
1646                 } elsif ($line =~ m/--BEGIN/) {
1647                         push @comment, $line;
1648                         last;
1649                 } elsif ($line eq "") {
1650                         last;
1651                 }
1652         }
1653         push @comment, <$fd>;
1654         $tag{'comment'} = \@comment;
1655         close $fd or return;
1656         if (!defined $tag{'name'}) {
1657                 return
1658         };
1659         return %tag
1660 }
1661
1662 sub parse_commit_text {
1663         my ($commit_text, $withparents) = @_;
1664         my @commit_lines = split '\n', $commit_text;
1665         my %co;
1666
1667         pop @commit_lines; # Remove '\0'
1668
1669         if (! @commit_lines) {
1670                 return;
1671         }
1672
1673         my $header = shift @commit_lines;
1674         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1675                 return;
1676         }
1677         ($co{'id'}, my @parents) = split ' ', $header;
1678         while (my $line = shift @commit_lines) {
1679                 last if $line eq "\n";
1680                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1681                         $co{'tree'} = $1;
1682                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1683                         push @parents, $1;
1684                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1685                         $co{'author'} = $1;
1686                         $co{'author_epoch'} = $2;
1687                         $co{'author_tz'} = $3;
1688                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1689                                 $co{'author_name'}  = $1;
1690                                 $co{'author_email'} = $2;
1691                         } else {
1692                                 $co{'author_name'} = $co{'author'};
1693                         }
1694                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1695                         $co{'committer'} = $1;
1696                         $co{'committer_epoch'} = $2;
1697                         $co{'committer_tz'} = $3;
1698                         $co{'committer_name'} = $co{'committer'};
1699                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1700                                 $co{'committer_name'}  = $1;
1701                                 $co{'committer_email'} = $2;
1702                         } else {
1703                                 $co{'committer_name'} = $co{'committer'};
1704                         }
1705                 }
1706         }
1707         if (!defined $co{'tree'}) {
1708                 return;
1709         };
1710         $co{'parents'} = \@parents;
1711         $co{'parent'} = $parents[0];
1712
1713         foreach my $title (@commit_lines) {
1714                 $title =~ s/^    //;
1715                 if ($title ne "") {
1716                         $co{'title'} = chop_str($title, 80, 5);
1717                         # remove leading stuff of merges to make the interesting part visible
1718                         if (length($title) > 50) {
1719                                 $title =~ s/^Automatic //;
1720                                 $title =~ s/^merge (of|with) /Merge ... /i;
1721                                 if (length($title) > 50) {
1722                                         $title =~ s/(http|rsync):\/\///;
1723                                 }
1724                                 if (length($title) > 50) {
1725                                         $title =~ s/(master|www|rsync)\.//;
1726                                 }
1727                                 if (length($title) > 50) {
1728                                         $title =~ s/kernel.org:?//;
1729                                 }
1730                                 if (length($title) > 50) {
1731                                         $title =~ s/\/pub\/scm//;
1732                                 }
1733                         }
1734                         $co{'title_short'} = chop_str($title, 50, 5);
1735                         last;
1736                 }
1737         }
1738         if ($co{'title'} eq "") {
1739                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1740         }
1741         # remove added spaces
1742         foreach my $line (@commit_lines) {
1743                 $line =~ s/^    //;
1744         }
1745         $co{'comment'} = \@commit_lines;
1746
1747         my $age = time - $co{'committer_epoch'};
1748         $co{'age'} = $age;
1749         $co{'age_string'} = age_string($age);
1750         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1751         if ($age > 60*60*24*7*2) {
1752                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1753                 $co{'age_string_age'} = $co{'age_string'};
1754         } else {
1755                 $co{'age_string_date'} = $co{'age_string'};
1756                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1757         }
1758         return %co;
1759 }
1760
1761 sub parse_commit {
1762         my ($commit_id) = @_;
1763         my %co;
1764
1765         local $/ = "\0";
1766
1767         open my $fd, "-|", git_cmd(), "rev-list",
1768                 "--parents",
1769                 "--header",
1770                 "--max-count=1",
1771                 $commit_id,
1772                 "--",
1773                 or die_error(undef, "Open git-rev-list failed");
1774         %co = parse_commit_text(<$fd>, 1);
1775         close $fd;
1776
1777         return %co;
1778 }
1779
1780 sub parse_commits {
1781         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1782         my @cos;
1783
1784         $maxcount ||= 1;
1785         $skip ||= 0;
1786
1787         local $/ = "\0";
1788
1789         open my $fd, "-|", git_cmd(), "rev-list",
1790                 "--header",
1791                 ($arg ? ($arg) : ()),
1792                 ("--max-count=" . $maxcount),
1793                 ("--skip=" . $skip),
1794                 @extra_options,
1795                 $commit_id,
1796                 "--",
1797                 ($filename ? ($filename) : ())
1798                 or die_error(undef, "Open git-rev-list failed");
1799         while (my $line = <$fd>) {
1800                 my %co = parse_commit_text($line);
1801                 push @cos, \%co;
1802         }
1803         close $fd;
1804
1805         return wantarray ? @cos : \@cos;
1806 }
1807
1808 # parse ref from ref_file, given by ref_id, with given type
1809 sub parse_ref {
1810         my $ref_file = shift;
1811         my $ref_id = shift;
1812         my $type = shift || git_get_type($ref_id);
1813         my %ref_item;
1814
1815         $ref_item{'type'} = $type;
1816         $ref_item{'id'} = $ref_id;
1817         $ref_item{'epoch'} = 0;
1818         $ref_item{'age'} = "unknown";
1819         if ($type eq "tag") {
1820                 my %tag = parse_tag($ref_id);
1821                 $ref_item{'comment'} = $tag{'comment'};
1822                 if ($tag{'type'} eq "commit") {
1823                         my %co = parse_commit($tag{'object'});
1824                         $ref_item{'epoch'} = $co{'committer_epoch'};
1825                         $ref_item{'age'} = $co{'age_string'};
1826                 } elsif (defined($tag{'epoch'})) {
1827                         my $age = time - $tag{'epoch'};
1828                         $ref_item{'epoch'} = $tag{'epoch'};
1829                         $ref_item{'age'} = age_string($age);
1830                 }
1831                 $ref_item{'reftype'} = $tag{'type'};
1832                 $ref_item{'name'} = $tag{'name'};
1833                 $ref_item{'refid'} = $tag{'object'};
1834         } elsif ($type eq "commit"){
1835                 my %co = parse_commit($ref_id);
1836                 $ref_item{'reftype'} = "commit";
1837                 $ref_item{'name'} = $ref_file;
1838                 $ref_item{'title'} = $co{'title'};
1839                 $ref_item{'refid'} = $ref_id;
1840                 $ref_item{'epoch'} = $co{'committer_epoch'};
1841                 $ref_item{'age'} = $co{'age_string'};
1842         } else {
1843                 $ref_item{'reftype'} = $type;
1844                 $ref_item{'name'} = $ref_file;
1845                 $ref_item{'refid'} = $ref_id;
1846         }
1847
1848         return %ref_item;
1849 }
1850
1851 # parse line of git-diff-tree "raw" output
1852 sub parse_difftree_raw_line {
1853         my $line = shift;
1854         my %res;
1855
1856         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1857         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1858         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1859                 $res{'from_mode'} = $1;
1860                 $res{'to_mode'} = $2;
1861                 $res{'from_id'} = $3;
1862                 $res{'to_id'} = $4;
1863                 $res{'status'} = $5;
1864                 $res{'similarity'} = $6;
1865                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1866                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1867                 } else {
1868                         $res{'file'} = unquote($7);
1869                 }
1870         }
1871         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1872         # combined diff (for merge commit)
1873         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1874                 $res{'nparents'}  = length($1);
1875                 $res{'from_mode'} = [ split(' ', $2) ];
1876                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1877                 $res{'from_id'} = [ split(' ', $3) ];
1878                 $res{'to_id'} = pop @{$res{'from_id'}};
1879                 $res{'status'} = [ split('', $4) ];
1880                 $res{'to_file'} = unquote($5);
1881         }
1882         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1883         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1884                 $res{'commit'} = $1;
1885         }
1886
1887         return wantarray ? %res : \%res;
1888 }
1889
1890 # parse line of git-ls-tree output
1891 sub parse_ls_tree_line ($;%) {
1892         my $line = shift;
1893         my %opts = @_;
1894         my %res;
1895
1896         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1897         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1898
1899         $res{'mode'} = $1;
1900         $res{'type'} = $2;
1901         $res{'hash'} = $3;
1902         if ($opts{'-z'}) {
1903                 $res{'name'} = $4;
1904         } else {
1905                 $res{'name'} = unquote($4);
1906         }
1907
1908         return wantarray ? %res : \%res;
1909 }
1910
1911 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1912 sub parse_from_to_diffinfo {
1913         my ($diffinfo, $from, $to, @parents) = @_;
1914
1915         if ($diffinfo->{'nparents'}) {
1916                 # combined diff
1917                 $from->{'file'} = [];
1918                 $from->{'href'} = [];
1919                 fill_from_file_info($diffinfo, @parents)
1920                         unless exists $diffinfo->{'from_file'};
1921                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1922                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1923                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1924                                 $from->{'href'}[$i] = href(action=>"blob",
1925                                                            hash_base=>$parents[$i],
1926                                                            hash=>$diffinfo->{'from_id'}[$i],
1927                                                            file_name=>$from->{'file'}[$i]);
1928                         } else {
1929                                 $from->{'href'}[$i] = undef;
1930                         }
1931                 }
1932         } else {
1933                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1934                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1935                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1936                                                hash=>$diffinfo->{'from_id'},
1937                                                file_name=>$from->{'file'});
1938                 } else {
1939                         delete $from->{'href'};
1940                 }
1941         }
1942
1943         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1944         if (!is_deleted($diffinfo)) { # file exists in result
1945                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1946                                      hash=>$diffinfo->{'to_id'},
1947                                      file_name=>$to->{'file'});
1948         } else {
1949                 delete $to->{'href'};
1950         }
1951 }
1952
1953 ## ......................................................................
1954 ## parse to array of hashes functions
1955
1956 sub git_get_heads_list {
1957         my $limit = shift;
1958         my @headslist;
1959
1960         open my $fd, '-|', git_cmd(), 'for-each-ref',
1961                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1962                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1963                 'refs/heads'
1964                 or return;
1965         while (my $line = <$fd>) {
1966                 my %ref_item;
1967
1968                 chomp $line;
1969                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1970                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1971                 my ($committer, $epoch, $tz) =
1972                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1973                 $name =~ s!^refs/heads/!!;
1974
1975                 $ref_item{'name'}  = $name;
1976                 $ref_item{'id'}    = $hash;
1977                 $ref_item{'title'} = $title || '(no commit message)';
1978                 $ref_item{'epoch'} = $epoch;
1979                 if ($epoch) {
1980                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1981                 } else {
1982                         $ref_item{'age'} = "unknown";
1983                 }
1984
1985                 push @headslist, \%ref_item;
1986         }
1987         close $fd;
1988
1989         return wantarray ? @headslist : \@headslist;
1990 }
1991
1992 sub git_get_tags_list {
1993         my $limit = shift;
1994         my @tagslist;
1995
1996         open my $fd, '-|', git_cmd(), 'for-each-ref',
1997                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1998                 '--format=%(objectname) %(objecttype) %(refname) '.
1999                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2000                 'refs/tags'
2001                 or return;
2002         while (my $line = <$fd>) {
2003                 my %ref_item;
2004
2005                 chomp $line;
2006                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2007                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2008                 my ($creator, $epoch, $tz) =
2009                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2010                 $name =~ s!^refs/tags/!!;
2011
2012                 $ref_item{'type'} = $type;
2013                 $ref_item{'id'} = $id;
2014                 $ref_item{'name'} = $name;
2015                 if ($type eq "tag") {
2016                         $ref_item{'subject'} = $title;
2017                         $ref_item{'reftype'} = $reftype;
2018                         $ref_item{'refid'}   = $refid;
2019                 } else {
2020                         $ref_item{'reftype'} = $type;
2021                         $ref_item{'refid'}   = $id;
2022                 }
2023
2024                 if ($type eq "tag" || $type eq "commit") {
2025                         $ref_item{'epoch'} = $epoch;
2026                         if ($epoch) {
2027                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2028                         } else {
2029                                 $ref_item{'age'} = "unknown";
2030                         }
2031                 }
2032
2033                 push @tagslist, \%ref_item;
2034         }
2035         close $fd;
2036
2037         return wantarray ? @tagslist : \@tagslist;
2038 }
2039
2040 ## ----------------------------------------------------------------------
2041 ## filesystem-related functions
2042
2043 sub get_file_owner {
2044         my $path = shift;
2045
2046         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2047         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2048         if (!defined $gcos) {
2049                 return undef;
2050         }
2051         my $owner = $gcos;
2052         $owner =~ s/[,;].*$//;
2053         return to_utf8($owner);
2054 }
2055
2056 ## ......................................................................
2057 ## mimetype related functions
2058
2059 sub mimetype_guess_file {
2060         my $filename = shift;
2061         my $mimemap = shift;
2062         -r $mimemap or return undef;
2063
2064         my %mimemap;
2065         open(MIME, $mimemap) or return undef;
2066         while (<MIME>) {
2067                 next if m/^#/; # skip comments
2068                 my ($mime, $exts) = split(/\t+/);
2069                 if (defined $exts) {
2070                         my @exts = split(/\s+/, $exts);
2071                         foreach my $ext (@exts) {
2072                                 $mimemap{$ext} = $mime;
2073                         }
2074                 }
2075         }
2076         close(MIME);
2077
2078         $filename =~ /\.([^.]*)$/;
2079         return $mimemap{$1};
2080 }
2081
2082 sub mimetype_guess {
2083         my $filename = shift;
2084         my $mime;
2085         $filename =~ /\./ or return undef;
2086
2087         if ($mimetypes_file) {
2088                 my $file = $mimetypes_file;
2089                 if ($file !~ m!^/!) { # if it is relative path
2090                         # it is relative to project
2091                         $file = "$projectroot/$project/$file";
2092                 }
2093                 $mime = mimetype_guess_file($filename, $file);
2094         }
2095         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2096         return $mime;
2097 }
2098
2099 sub blob_mimetype {
2100         my $fd = shift;
2101         my $filename = shift;
2102
2103         if ($filename) {
2104                 my $mime = mimetype_guess($filename);
2105                 $mime and return $mime;
2106         }
2107
2108         # just in case
2109         return $default_blob_plain_mimetype unless $fd;
2110
2111         if (-T $fd) {
2112                 return 'text/plain' .
2113                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2114         } elsif (! $filename) {
2115                 return 'application/octet-stream';
2116         } elsif ($filename =~ m/\.png$/i) {
2117                 return 'image/png';
2118         } elsif ($filename =~ m/\.gif$/i) {
2119                 return 'image/gif';
2120         } elsif ($filename =~ m/\.jpe?g$/i) {
2121                 return 'image/jpeg';
2122         } else {
2123                 return 'application/octet-stream';
2124         }
2125 }
2126
2127 ## ======================================================================
2128 ## functions printing HTML: header, footer, error page
2129
2130 sub git_header_html {
2131         my $status = shift || "200 OK";
2132         my $expires = shift;
2133
2134         my $title = "$site_name";
2135         if (defined $project) {
2136                 $title .= " - " . to_utf8($project);
2137                 if (defined $action) {
2138                         $title .= "/$action";
2139                         if (defined $file_name) {
2140                                 $title .= " - " . esc_path($file_name);
2141                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2142                                         $title .= "/";
2143                                 }
2144                         }
2145                 }
2146         }
2147         my $content_type;
2148         # require explicit support from the UA if we are to send the page as
2149         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2150         # we have to do this because MSIE sometimes globs '*/*', pretending to
2151         # support xhtml+xml but choking when it gets what it asked for.
2152         if (defined $cgi->http('HTTP_ACCEPT') &&
2153             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2154             $cgi->Accept('application/xhtml+xml') != 0) {
2155                 $content_type = 'application/xhtml+xml';
2156         } else {
2157                 $content_type = 'text/html';
2158         }
2159         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2160                            -status=> $status, -expires => $expires);
2161         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2162         print <<EOF;
2163 <?xml version="1.0" encoding="utf-8"?>
2164 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2165 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2166 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2167 <!-- git core binaries version $git_version -->
2168 <head>
2169 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2170 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2171 <meta name="robots" content="index, nofollow"/>
2172 <title>$title</title>
2173 EOF
2174 # print out each stylesheet that exist
2175         if (defined $stylesheet) {
2176 #provides backwards capability for those people who define style sheet in a config file
2177                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2178         } else {
2179                 foreach my $stylesheet (@stylesheets) {
2180                         next unless $stylesheet;
2181                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2182                 }
2183         }
2184         if (defined $project) {
2185                 printf('<link rel="alternate" title="%s log RSS feed" '.
2186                        'href="%s" type="application/rss+xml" />'."\n",
2187                        esc_param($project), href(action=>"rss"));
2188                 printf('<link rel="alternate" title="%s log Atom feed" '.
2189                        'href="%s" type="application/atom+xml" />'."\n",
2190                        esc_param($project), href(action=>"atom"));
2191         } else {
2192                 printf('<link rel="alternate" title="%s projects list" '.
2193                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2194                        $site_name, href(project=>undef, action=>"project_index"));
2195                 printf('<link rel="alternate" title="%s projects feeds" '.
2196                        'href="%s" type="text/x-opml"/>'."\n",
2197                        $site_name, href(project=>undef, action=>"opml"));
2198         }
2199         if (defined $favicon) {
2200                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2201         }
2202
2203         print "</head>\n" .
2204               "<body>\n";
2205
2206         if (-f $site_header) {
2207                 open (my $fd, $site_header);
2208                 print <$fd>;
2209                 close $fd;
2210         }
2211
2212         print "<div class=\"page_header\">\n" .
2213               $cgi->a({-href => esc_url($logo_url),
2214                        -title => $logo_label},
2215                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2216         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2217         if (defined $project) {
2218                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2219                 if (defined $action) {
2220                         print " / $action";
2221                 }
2222                 print "\n";
2223         }
2224         print "</div>\n";
2225
2226         my ($have_search) = gitweb_check_feature('search');
2227         if ((defined $project) && ($have_search)) {
2228                 if (!defined $searchtext) {
2229                         $searchtext = "";
2230                 }
2231                 my $search_hash;
2232                 if (defined $hash_base) {
2233                         $search_hash = $hash_base;
2234                 } elsif (defined $hash) {
2235                         $search_hash = $hash;
2236                 } else {
2237                         $search_hash = "HEAD";
2238                 }
2239                 my $action = $my_uri;
2240                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2241                 if ($use_pathinfo) {
2242                         $action .= "/$project";
2243                 } else {
2244                         $cgi->param("p", $project);
2245                 }
2246                 $cgi->param("a", "search");
2247                 $cgi->param("h", $search_hash);
2248                 print $cgi->startform(-method => "get", -action => $action) .
2249                       "<div class=\"search\">\n" .
2250                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2251                       $cgi->hidden(-name => "a") . "\n" .
2252                       $cgi->hidden(-name => "h") . "\n" .
2253                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2254                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2255                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2256                       " search:\n",
2257                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2258                       "</div>" .
2259                       $cgi->end_form() . "\n";
2260         }
2261 }
2262
2263 sub git_footer_html {
2264         print "<div class=\"page_footer\">\n";
2265         if (defined $project) {
2266                 my $descr = git_get_project_description($project);
2267                 if (defined $descr) {
2268                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2269                 }
2270                 print $cgi->a({-href => href(action=>"rss"),
2271                               -class => "rss_logo"}, "RSS") . " ";
2272                 print $cgi->a({-href => href(action=>"atom"),
2273                               -class => "rss_logo"}, "Atom") . "\n";
2274         } else {
2275                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2276                               -class => "rss_logo"}, "OPML") . " ";
2277                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2278                               -class => "rss_logo"}, "TXT") . "\n";
2279         }
2280         print "</div>\n" ;
2281
2282         if (-f $site_footer) {
2283                 open (my $fd, $site_footer);
2284                 print <$fd>;
2285                 close $fd;
2286         }
2287
2288         print "</body>\n" .
2289               "</html>";
2290 }
2291
2292 sub die_error {
2293         my $status = shift || "403 Forbidden";
2294         my $error = shift || "Malformed query, file missing or permission denied";
2295
2296         git_header_html($status);
2297         print <<EOF;
2298 <div class="page_body">
2299 <br /><br />
2300 $status - $error
2301 <br />
2302 </div>
2303 EOF
2304         git_footer_html();
2305         exit;
2306 }
2307
2308 ## ----------------------------------------------------------------------
2309 ## functions printing or outputting HTML: navigation
2310
2311 sub git_print_page_nav {
2312         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2313         $extra = '' if !defined $extra; # pager or formats
2314
2315         my @navs = qw(summary shortlog log commit commitdiff tree);
2316         if ($suppress) {
2317                 @navs = grep { $_ ne $suppress } @navs;
2318         }
2319
2320         my %arg = map { $_ => {action=>$_} } @navs;
2321         if (defined $head) {
2322                 for (qw(commit commitdiff)) {
2323                         $arg{$_}{'hash'} = $head;
2324                 }
2325                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2326                         for (qw(shortlog log)) {
2327                                 $arg{$_}{'hash'} = $head;
2328                         }
2329                 }
2330         }
2331         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2332         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2333
2334         print "<div class=\"page_nav\">\n" .
2335                 (join " | ",
2336                  map { $_ eq $current ?
2337                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2338                  } @navs);
2339         print "<br/>\n$extra<br/>\n" .
2340               "</div>\n";
2341 }
2342
2343 sub format_paging_nav {
2344         my ($action, $hash, $head, $page, $nrevs) = @_;
2345         my $paging_nav;
2346
2347
2348         if ($hash ne $head || $page) {
2349                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2350         } else {
2351                 $paging_nav .= "HEAD";
2352         }
2353
2354         if ($page > 0) {
2355                 $paging_nav .= " &sdot; " .
2356                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2357                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2358         } else {
2359                 $paging_nav .= " &sdot; prev";
2360         }
2361
2362         if ($nrevs >= (100 * ($page+1)-1)) {
2363                 $paging_nav .= " &sdot; " .
2364                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2365                                  -accesskey => "n", -title => "Alt-n"}, "next");
2366         } else {
2367                 $paging_nav .= " &sdot; next";
2368         }
2369
2370         return $paging_nav;
2371 }
2372
2373 ## ......................................................................
2374 ## functions printing or outputting HTML: div
2375
2376 sub git_print_header_div {
2377         my ($action, $title, $hash, $hash_base) = @_;
2378         my %args = ();
2379
2380         $args{'action'} = $action;
2381         $args{'hash'} = $hash if $hash;
2382         $args{'hash_base'} = $hash_base if $hash_base;
2383
2384         print "<div class=\"header\">\n" .
2385               $cgi->a({-href => href(%args), -class => "title"},
2386               $title ? $title : $action) .
2387               "\n</div>\n";
2388 }
2389
2390 #sub git_print_authorship (\%) {
2391 sub git_print_authorship {
2392         my $co = shift;
2393
2394         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2395         print "<div class=\"author_date\">" .
2396               esc_html($co->{'author_name'}) .
2397               " [$ad{'rfc2822'}";
2398         if ($ad{'hour_local'} < 6) {
2399                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2400                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2401         } else {
2402                 printf(" (%02d:%02d %s)",
2403                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2404         }
2405         print "]</div>\n";
2406 }
2407
2408 sub git_print_page_path {
2409         my $name = shift;
2410         my $type = shift;
2411         my $hb = shift;
2412
2413
2414         print "<div class=\"page_path\">";
2415         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2416                       -title => 'tree root'}, to_utf8("[$project]"));
2417         print " / ";
2418         if (defined $name) {
2419                 my @dirname = split '/', $name;
2420                 my $basename = pop @dirname;
2421                 my $fullname = '';
2422
2423                 foreach my $dir (@dirname) {
2424                         $fullname .= ($fullname ? '/' : '') . $dir;
2425                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2426                                                      hash_base=>$hb),
2427                                       -title => $fullname}, esc_path($dir));
2428                         print " / ";
2429                 }
2430                 if (defined $type && $type eq 'blob') {
2431                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2432                                                      hash_base=>$hb),
2433                                       -title => $name}, esc_path($basename));
2434                 } elsif (defined $type && $type eq 'tree') {
2435                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2436                                                      hash_base=>$hb),
2437                                       -title => $name}, esc_path($basename));
2438                         print " / ";
2439                 } else {
2440                         print esc_path($basename);
2441                 }
2442         }
2443         print "<br/></div>\n";
2444 }
2445
2446 # sub git_print_log (\@;%) {
2447 sub git_print_log ($;%) {
2448         my $log = shift;
2449         my %opts = @_;
2450
2451         if ($opts{'-remove_title'}) {
2452                 # remove title, i.e. first line of log
2453                 shift @$log;
2454         }
2455         # remove leading empty lines
2456         while (defined $log->[0] && $log->[0] eq "") {
2457                 shift @$log;
2458         }
2459
2460         # print log
2461         my $signoff = 0;
2462         my $empty = 0;
2463         foreach my $line (@$log) {
2464                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2465                         $signoff = 1;
2466                         $empty = 0;
2467                         if (! $opts{'-remove_signoff'}) {
2468                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2469                                 next;
2470                         } else {
2471                                 # remove signoff lines
2472                                 next;
2473                         }
2474                 } else {
2475                         $signoff = 0;
2476                 }
2477
2478                 # print only one empty line
2479                 # do not print empty line after signoff
2480                 if ($line eq "") {
2481                         next if ($empty || $signoff);
2482                         $empty = 1;
2483                 } else {
2484                         $empty = 0;
2485                 }
2486
2487                 print format_log_line_html($line) . "<br/>\n";
2488         }
2489
2490         if ($opts{'-final_empty_line'}) {
2491                 # end with single empty line
2492                 print "<br/>\n" unless $empty;
2493         }
2494 }
2495
2496 # return link target (what link points to)
2497 sub git_get_link_target {
2498         my $hash = shift;
2499         my $link_target;
2500
2501         # read link
2502         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2503                 or return;
2504         {
2505                 local $/;
2506                 $link_target = <$fd>;
2507         }
2508         close $fd
2509                 or return;
2510
2511         return $link_target;
2512 }
2513
2514 # given link target, and the directory (basedir) the link is in,
2515 # return target of link relative to top directory (top tree);
2516 # return undef if it is not possible (including absolute links).
2517 sub normalize_link_target {
2518         my ($link_target, $basedir, $hash_base) = @_;
2519
2520         # we can normalize symlink target only if $hash_base is provided
2521         return unless $hash_base;
2522
2523         # absolute symlinks (beginning with '/') cannot be normalized
2524         return if (substr($link_target, 0, 1) eq '/');
2525
2526         # normalize link target to path from top (root) tree (dir)
2527         my $path;
2528         if ($basedir) {
2529                 $path = $basedir . '/' . $link_target;
2530         } else {
2531                 # we are in top (root) tree (dir)
2532                 $path = $link_target;
2533         }
2534
2535         # remove //, /./, and /../
2536         my @path_parts;
2537         foreach my $part (split('/', $path)) {
2538                 # discard '.' and ''
2539                 next if (!$part || $part eq '.');
2540                 # handle '..'
2541                 if ($part eq '..') {
2542                         if (@path_parts) {
2543                                 pop @path_parts;
2544                         } else {
2545                                 # link leads outside repository (outside top dir)
2546                                 return;
2547                         }
2548                 } else {
2549                         push @path_parts, $part;
2550                 }
2551         }
2552         $path = join('/', @path_parts);
2553
2554         return $path;
2555 }
2556
2557 # print tree entry (row of git_tree), but without encompassing <tr> element
2558 sub git_print_tree_entry {
2559         my ($t, $basedir, $hash_base, $have_blame) = @_;
2560
2561         my %base_key = ();
2562         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2563
2564         # The format of a table row is: mode list link.  Where mode is
2565         # the mode of the entry, list is the name of the entry, an href,
2566         # and link is the action links of the entry.
2567
2568         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2569         if ($t->{'type'} eq "blob") {
2570                 print "<td class=\"list\">" .
2571                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2572                                                file_name=>"$basedir$t->{'name'}", %base_key),
2573                                 -class => "list"}, esc_path($t->{'name'}));
2574                 if (S_ISLNK(oct $t->{'mode'})) {
2575                         my $link_target = git_get_link_target($t->{'hash'});
2576                         if ($link_target) {
2577                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2578                                 if (defined $norm_target) {
2579                                         print " -> " .
2580                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2581                                                                      file_name=>$norm_target),
2582                                                        -title => $norm_target}, esc_path($link_target));
2583                                 } else {
2584                                         print " -> " . esc_path($link_target);
2585                                 }
2586                         }
2587                 }
2588                 print "</td>\n";
2589                 print "<td class=\"link\">";
2590                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2591                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2592                               "blob");
2593                 if ($have_blame) {
2594                         print " | " .
2595                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2596                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2597                                       "blame");
2598                 }
2599                 if (defined $hash_base) {
2600                         print " | " .
2601                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2602                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2603                                       "history");
2604                 }
2605                 print " | " .
2606                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2607                                                file_name=>"$basedir$t->{'name'}")},
2608                                 "raw");
2609                 print "</td>\n";
2610
2611         } elsif ($t->{'type'} eq "tree") {
2612                 print "<td class=\"list\">";
2613                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2614                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2615                               esc_path($t->{'name'}));
2616                 print "</td>\n";
2617                 print "<td class=\"link\">";
2618                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2619                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2620                               "tree");
2621                 if (defined $hash_base) {
2622                         print " | " .
2623                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2624                                                      file_name=>"$basedir$t->{'name'}")},
2625                                       "history");
2626                 }
2627                 print "</td>\n";
2628         }
2629 }
2630
2631 ## ......................................................................
2632 ## functions printing large fragments of HTML
2633
2634 sub fill_from_file_info {
2635         my ($diff, @parents) = @_;
2636
2637         $diff->{'from_file'} = [ ];
2638         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2639         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2640                 if ($diff->{'status'}[$i] eq 'R' ||
2641                     $diff->{'status'}[$i] eq 'C') {
2642                         $diff->{'from_file'}[$i] =
2643                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2644                 }
2645         }
2646
2647         return $diff;
2648 }
2649
2650 # parameters can be strings, or references to arrays of strings
2651 sub from_ids_eq {
2652         my ($a, $b) = @_;
2653
2654         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2655                 for (my $i = 0; $i < @$a; ++$i) {
2656                         return 0 unless ($a->[$i] eq $b->[$i]);
2657                 }
2658                 return 1;
2659         } elsif (!ref($a) && !ref($b)) {
2660                 return $a eq $b;
2661         } else {
2662                 return 0;
2663         }
2664 }
2665
2666 sub is_deleted {
2667         my $diffinfo = shift;
2668
2669         return $diffinfo->{'to_id'} eq ('0' x 40);
2670 }
2671
2672 sub git_difftree_body {
2673         my ($difftree, $hash, @parents) = @_;
2674         my ($parent) = $parents[0];
2675         my ($have_blame) = gitweb_check_feature('blame');
2676         print "<div class=\"list_head\">\n";
2677         if ($#{$difftree} > 10) {
2678                 print(($#{$difftree} + 1) . " files changed:\n");
2679         }
2680         print "</div>\n";
2681
2682         print "<table class=\"" .
2683               (@parents > 1 ? "combined " : "") .
2684               "diff_tree\">\n";
2685
2686         # header only for combined diff in 'commitdiff' view
2687         my $has_header = @parents > 1 && $action eq 'commitdiff';
2688         if ($has_header) {
2689                 # table header
2690                 print "<thead><tr>\n" .
2691                        "<th></th><th></th>\n"; # filename, patchN link
2692                 for (my $i = 0; $i < @parents; $i++) {
2693                         my $par = $parents[$i];
2694                         print "<th>" .
2695                               $cgi->a({-href => href(action=>"commitdiff",
2696                                                      hash=>$hash, hash_parent=>$par),
2697                                        -title => 'commitdiff to parent number ' .
2698                                                   ($i+1) . ': ' . substr($par,0,7)},
2699                                       $i+1) .
2700                               "&nbsp;</th>\n";
2701                 }
2702                 print "</tr></thead>\n<tbody>\n";
2703         }
2704
2705         my $alternate = 1;
2706         my $patchno = 0;
2707         foreach my $line (@{$difftree}) {
2708                 my $diff;
2709                 if (ref($line) eq "HASH") {
2710                         # pre-parsed (or generated by hand)
2711                         $diff = $line;
2712                 } else {
2713                         $diff = parse_difftree_raw_line($line);
2714                 }
2715
2716                 if ($alternate) {
2717                         print "<tr class=\"dark\">\n";
2718                 } else {
2719                         print "<tr class=\"light\">\n";
2720                 }
2721                 $alternate ^= 1;
2722
2723                 if (exists $diff->{'nparents'}) { # combined diff
2724
2725                         fill_from_file_info($diff, @parents)
2726                                 unless exists $diff->{'from_file'};
2727
2728                         if (!is_deleted($diff)) {
2729                                 # file exists in the result (child) commit
2730                                 print "<td>" .
2731                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2732                                                              file_name=>$diff->{'to_file'},
2733                                                              hash_base=>$hash),
2734                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2735                                       "</td>\n";
2736                         } else {
2737                                 print "<td>" .
2738                                       esc_path($diff->{'to_file'}) .
2739                                       "</td>\n";
2740                         }
2741
2742                         if ($action eq 'commitdiff') {
2743                                 # link to patch
2744                                 $patchno++;
2745                                 print "<td class=\"link\">" .
2746                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2747                                       " | " .
2748                                       "</td>\n";
2749                         }
2750
2751                         my $has_history = 0;
2752                         my $not_deleted = 0;
2753                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2754                                 my $hash_parent = $parents[$i];
2755                                 my $from_hash = $diff->{'from_id'}[$i];
2756                                 my $from_path = $diff->{'from_file'}[$i];
2757                                 my $status = $diff->{'status'}[$i];
2758
2759                                 $has_history ||= ($status ne 'A');
2760                                 $not_deleted ||= ($status ne 'D');
2761
2762                                 if ($status eq 'A') {
2763                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2764                                 } elsif ($status eq 'D') {
2765                                         print "<td class=\"link\">" .
2766                                               $cgi->a({-href => href(action=>"blob",
2767                                                                      hash_base=>$hash,
2768                                                                      hash=>$from_hash,
2769                                                                      file_name=>$from_path)},
2770                                                       "blob" . ($i+1)) .
2771                                               " | </td>\n";
2772                                 } else {
2773                                         if ($diff->{'to_id'} eq $from_hash) {
2774                                                 print "<td class=\"link nochange\">";
2775                                         } else {
2776                                                 print "<td class=\"link\">";
2777                                         }
2778                                         print $cgi->a({-href => href(action=>"blobdiff",
2779                                                                      hash=>$diff->{'to_id'},
2780                                                                      hash_parent=>$from_hash,
2781                                                                      hash_base=>$hash,
2782                                                                      hash_parent_base=>$hash_parent,
2783                                                                      file_name=>$diff->{'to_file'},
2784                                                                      file_parent=>$from_path)},
2785                                                       "diff" . ($i+1)) .
2786                                               " | </td>\n";
2787                                 }
2788                         }
2789
2790                         print "<td class=\"link\">";
2791                         if ($not_deleted) {
2792                                 print $cgi->a({-href => href(action=>"blob",
2793                                                              hash=>$diff->{'to_id'},
2794                                                              file_name=>$diff->{'to_file'},
2795                                                              hash_base=>$hash)},
2796                                               "blob");
2797                                 print " | " if ($has_history);
2798                         }
2799                         if ($has_history) {
2800                                 print $cgi->a({-href => href(action=>"history",
2801                                                              file_name=>$diff->{'to_file'},
2802                                                              hash_base=>$hash)},
2803                                               "history");
2804                         }
2805                         print "</td>\n";
2806
2807                         print "</tr>\n";
2808                         next; # instead of 'else' clause, to avoid extra indent
2809                 }
2810                 # else ordinary diff
2811
2812                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2813                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2814                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2815                         $to_mode_oct = oct $diff->{'to_mode'};
2816                         if (S_ISREG($to_mode_oct)) { # only for regular file
2817                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2818                         }
2819                         $to_file_type = file_type($diff->{'to_mode'});
2820                 }
2821                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2822                         $from_mode_oct = oct $diff->{'from_mode'};
2823                         if (S_ISREG($to_mode_oct)) { # only for regular file
2824                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2825                         }
2826                         $from_file_type = file_type($diff->{'from_mode'});
2827                 }
2828
2829                 if ($diff->{'status'} eq "A") { # created
2830                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2831                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2832                         $mode_chng   .= "]</span>";
2833                         print "<td>";
2834                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2835                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2836                                       -class => "list"}, esc_path($diff->{'file'}));
2837                         print "</td>\n";
2838                         print "<td>$mode_chng</td>\n";
2839                         print "<td class=\"link\">";
2840                         if ($action eq 'commitdiff') {
2841                                 # link to patch
2842                                 $patchno++;
2843                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2844                                 print " | ";
2845                         }
2846                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2847                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2848                                       "blob");
2849                         print "</td>\n";
2850
2851                 } elsif ($diff->{'status'} eq "D") { # deleted
2852                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2853                         print "<td>";
2854                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2855                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2856                                        -class => "list"}, esc_path($diff->{'file'}));
2857                         print "</td>\n";
2858                         print "<td>$mode_chng</td>\n";
2859                         print "<td class=\"link\">";
2860                         if ($action eq 'commitdiff') {
2861                                 # link to patch
2862                                 $patchno++;
2863                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2864                                 print " | ";
2865                         }
2866                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2867                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2868                                       "blob") . " | ";
2869                         if ($have_blame) {
2870                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2871                                                              file_name=>$diff->{'file'})},
2872                                               "blame") . " | ";
2873                         }
2874                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2875                                                      file_name=>$diff->{'file'})},
2876                                       "history");
2877                         print "</td>\n";
2878
2879                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2880                         my $mode_chnge = "";
2881                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2882                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2883                                 if ($from_file_type ne $to_file_type) {
2884                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2885                                 }
2886                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2887                                         if ($from_mode_str && $to_mode_str) {
2888                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2889                                         } elsif ($to_mode_str) {
2890                                                 $mode_chnge .= " mode: $to_mode_str";
2891                                         }
2892                                 }
2893                                 $mode_chnge .= "]</span>\n";
2894                         }
2895                         print "<td>";
2896                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2897                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2898                                       -class => "list"}, esc_path($diff->{'file'}));
2899                         print "</td>\n";
2900                         print "<td>$mode_chnge</td>\n";
2901                         print "<td class=\"link\">";
2902                         if ($action eq 'commitdiff') {
2903                                 # link to patch
2904                                 $patchno++;
2905                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2906                                       " | ";
2907                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2908                                 # "commit" view and modified file (not onlu mode changed)
2909                                 print $cgi->a({-href => href(action=>"blobdiff",
2910                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2911                                                              hash_base=>$hash, hash_parent_base=>$parent,
2912                                                              file_name=>$diff->{'file'})},
2913                                               "diff") .
2914                                       " | ";
2915                         }
2916                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2917                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2918                                        "blob") . " | ";
2919                         if ($have_blame) {
2920                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2921                                                              file_name=>$diff->{'file'})},
2922                                               "blame") . " | ";
2923                         }
2924                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2925                                                      file_name=>$diff->{'file'})},
2926                                       "history");
2927                         print "</td>\n";
2928
2929                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2930                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2931                         my $nstatus = $status_name{$diff->{'status'}};
2932                         my $mode_chng = "";
2933                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2934                                 # mode also for directories, so we cannot use $to_mode_str
2935                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2936                         }
2937                         print "<td>" .
2938                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2939                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2940                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2941                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2942                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2943                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2944                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2945                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2946                               "<td class=\"link\">";
2947                         if ($action eq 'commitdiff') {
2948                                 # link to patch
2949                                 $patchno++;
2950                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2951                                       " | ";
2952                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2953                                 # "commit" view and modified file (not only pure rename or copy)
2954                                 print $cgi->a({-href => href(action=>"blobdiff",
2955                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2956                                                              hash_base=>$hash, hash_parent_base=>$parent,
2957                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2958                                               "diff") .
2959                                       " | ";
2960                         }
2961                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2962                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2963                                       "blob") . " | ";
2964                         if ($have_blame) {
2965                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2966                                                              file_name=>$diff->{'to_file'})},
2967                                               "blame") . " | ";
2968                         }
2969                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2970                                                     file_name=>$diff->{'to_file'})},
2971                                       "history");
2972                         print "</td>\n";
2973
2974                 } # we should not encounter Unmerged (U) or Unknown (X) status
2975                 print "</tr>\n";
2976         }
2977         print "</tbody>" if $has_header;
2978         print "</table>\n";
2979 }
2980
2981 sub git_patchset_body {
2982         my ($fd, $difftree, $hash, @hash_parents) = @_;
2983         my ($hash_parent) = $hash_parents[0];
2984
2985         my $patch_idx = 0;
2986         my $patch_number = 0;
2987         my $patch_line;
2988         my $diffinfo;
2989         my (%from, %to);
2990
2991         print "<div class=\"patchset\">\n";
2992
2993         # skip to first patch
2994         while ($patch_line = <$fd>) {
2995                 chomp $patch_line;
2996
2997                 last if ($patch_line =~ m/^diff /);
2998         }
2999
3000  PATCH:
3001         while ($patch_line) {
3002                 my @diff_header;
3003                 my ($from_id, $to_id);
3004
3005                 # git diff header
3006                 #assert($patch_line =~ m/^diff /) if DEBUG;
3007                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3008                 $patch_number++;
3009                 push @diff_header, $patch_line;
3010
3011                 # extended diff header
3012         EXTENDED_HEADER:
3013                 while ($patch_line = <$fd>) {
3014                         chomp $patch_line;
3015
3016                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3017
3018                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3019                                 $from_id = $1;
3020                                 $to_id   = $2;
3021                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3022                                 $from_id = [ split(',', $1) ];
3023                                 $to_id   = $2;
3024                         }
3025
3026                         push @diff_header, $patch_line;
3027                 }
3028                 my $last_patch_line = $patch_line;
3029
3030                 # check if current patch belong to current raw line
3031                 # and parse raw git-diff line if needed
3032                 if (defined $diffinfo &&
3033                     defined $from_id && defined $to_id &&
3034                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3035                     $diffinfo->{'to_id'} eq $to_id) {
3036                         # this is continuation of a split patch
3037                         print "<div class=\"patch cont\">\n";
3038                 } else {
3039                         # advance raw git-diff output if needed
3040                         $patch_idx++ if defined $diffinfo;
3041
3042                         # compact combined diff output can have some patches skipped
3043                         # find which patch (using pathname of result) we are at now
3044                         my $to_name;
3045                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3046                                 $to_name = $1;
3047                         }
3048
3049                         do {
3050                                 # read and prepare patch information
3051                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3052                                         # pre-parsed (or generated by hand)
3053                                         $diffinfo = $difftree->[$patch_idx];
3054                                 } else {
3055                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3056                                 }
3057
3058                                 # check if current raw line has no patch (it got simplified)
3059                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3060                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3061                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3062                                               "</div>\n";  # class="patch"
3063
3064                                         $patch_idx++;
3065                                         $patch_number++;
3066                                 }
3067                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3068                                  $patch_idx > $#$difftree);
3069                         # modifies %from, %to hashes
3070                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3071                         if ($diffinfo->{'nparents'}) {
3072                                 # combined diff
3073                                 $from{'file'} = [];
3074                                 $from{'href'} = [];
3075                                 fill_from_file_info($diffinfo, @hash_parents)
3076                                         unless exists $diffinfo->{'from_file'};
3077                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3078                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3079                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3080                                                 $from{'href'}[$i] = href(action=>"blob",
3081                                                                          hash_base=>$hash_parents[$i],
3082                                                                          hash=>$diffinfo->{'from_id'}[$i],
3083                                                                          file_name=>$from{'file'}[$i]);
3084                                         } else {
3085                                                 $from{'href'}[$i] = undef;
3086                                         }
3087                                 }
3088                         } else {
3089                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3090                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3091                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3092                                                              hash=>$diffinfo->{'from_id'},
3093                                                              file_name=>$from{'file'});
3094                                 } else {
3095                                         delete $from{'href'};
3096                                 }
3097                         }
3098
3099                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3100                         if (!is_deleted($diffinfo)) { # file exists in result
3101                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3102                                                    hash=>$diffinfo->{'to_id'},
3103                                                    file_name=>$to{'file'});
3104                         } else {
3105                                 delete $to{'href'};
3106                         }
3107                         # this is first patch for raw difftree line with $patch_idx index
3108                         # we index @$difftree array from 0, but number patches from 1
3109                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3110                 }
3111
3112                 # print "git diff" header
3113                 $patch_line = shift @diff_header;
3114                 print format_git_diff_header_line($patch_line, $diffinfo,
3115                                                   \%from, \%to);
3116
3117                 # print extended diff header
3118                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3119         EXTENDED_HEADER:
3120                 foreach $patch_line (@diff_header) {
3121                         print format_extended_diff_header_line($patch_line, $diffinfo,
3122                                                                \%from, \%to);
3123                 }
3124                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3125
3126                 # from-file/to-file diff header
3127                 $patch_line = $last_patch_line;
3128                 if (! $patch_line) {
3129                         print "</div>\n"; # class="patch"
3130                         last PATCH;
3131                 }
3132                 next PATCH if ($patch_line =~ m/^diff /);
3133                 #assert($patch_line =~ m/^---/) if DEBUG;
3134                 #assert($patch_line eq $last_patch_line) if DEBUG;
3135
3136                 $patch_line = <$fd>;
3137                 chomp $patch_line;
3138                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3139
3140                 print format_diff_from_to_header($last_patch_line, $patch_line,
3141                                                  $diffinfo, \%from, \%to,
3142                                                  @hash_parents);
3143
3144                 # the patch itself
3145         LINE:
3146                 while ($patch_line = <$fd>) {
3147                         chomp $patch_line;
3148
3149                         next PATCH if ($patch_line =~ m/^diff /);
3150
3151                         print format_diff_line($patch_line, \%from, \%to);
3152                 }
3153
3154         } continue {
3155                 print "</div>\n"; # class="patch"
3156         }
3157
3158         # for compact combined (--cc) format, with chunk and patch simpliciaction
3159         # patchset might be empty, but there might be unprocessed raw lines
3160         for ($patch_idx++ if $patch_number > 0;
3161              $patch_idx < @$difftree;
3162              $patch_idx++) {
3163                 # read and prepare patch information
3164                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3165                         # pre-parsed (or generated by hand)
3166                         $diffinfo = $difftree->[$patch_idx];
3167                 } else {
3168                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3169                 }
3170
3171                 # generate anchor for "patch" links in difftree / whatchanged part
3172                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3173                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3174                       "</div>\n";  # class="patch"
3175
3176                 $patch_number++;
3177         }
3178
3179         if ($patch_number == 0) {
3180                 if (@hash_parents > 1) {
3181                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3182                 } else {
3183                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3184                 }
3185         }
3186
3187         print "</div>\n"; # class="patchset"
3188 }
3189
3190 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3191
3192 sub git_project_list_body {
3193         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3194
3195         my ($check_forks) = gitweb_check_feature('forks');
3196
3197         my @projects;
3198         foreach my $pr (@$projlist) {
3199                 my (@aa) = git_get_last_activity($pr->{'path'});
3200                 unless (@aa) {
3201                         next;
3202                 }
3203                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3204                 if (!defined $pr->{'descr'}) {
3205                         my $descr = git_get_project_description($pr->{'path'}) || "";
3206                         $pr->{'descr_long'} = to_utf8($descr);
3207                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3208                 }
3209                 if (!defined $pr->{'owner'}) {
3210                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3211                 }
3212                 if ($check_forks) {
3213                         my $pname = $pr->{'path'};
3214                         if (($pname =~ s/\.git$//) &&
3215                             ($pname !~ /\/$/) &&
3216                             (-d "$projectroot/$pname")) {
3217                                 $pr->{'forks'} = "-d $projectroot/$pname";
3218                         }
3219                         else {
3220                                 $pr->{'forks'} = 0;
3221                         }
3222                 }
3223                 push @projects, $pr;
3224         }
3225
3226         $order ||= $default_projects_order;
3227         $from = 0 unless defined $from;
3228         $to = $#projects if (!defined $to || $#projects < $to);
3229
3230         print "<table class=\"project_list\">\n";
3231         unless ($no_header) {
3232                 print "<tr>\n";
3233                 if ($check_forks) {
3234                         print "<th></th>\n";
3235                 }
3236                 if ($order eq "project") {
3237                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3238                         print "<th>Project</th>\n";
3239                 } else {
3240                         print "<th>" .
3241                               $cgi->a({-href => href(project=>undef, order=>'project'),
3242                                        -class => "header"}, "Project") .
3243                               "</th>\n";
3244                 }
3245                 if ($order eq "descr") {
3246                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3247                         print "<th>Description</th>\n";
3248                 } else {
3249                         print "<th>" .
3250                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3251                                        -class => "header"}, "Description") .
3252                               "</th>\n";
3253                 }
3254                 if ($order eq "owner") {
3255                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3256                         print "<th>Owner</th>\n";
3257                 } else {
3258                         print "<th>" .
3259                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3260                                        -class => "header"}, "Owner") .
3261                               "</th>\n";
3262                 }
3263                 if ($order eq "age") {
3264                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3265                         print "<th>Last Change</th>\n";
3266                 } else {
3267                         print "<th>" .
3268                               $cgi->a({-href => href(project=>undef, order=>'age'),
3269                                        -class => "header"}, "Last Change") .
3270                               "</th>\n";
3271                 }
3272                 print "<th></th>\n" .
3273                       "</tr>\n";
3274         }
3275         my $alternate = 1;
3276         for (my $i = $from; $i <= $to; $i++) {
3277                 my $pr = $projects[$i];
3278                 if ($alternate) {
3279                         print "<tr class=\"dark\">\n";
3280                 } else {
3281                         print "<tr class=\"light\">\n";
3282                 }
3283                 $alternate ^= 1;
3284                 if ($check_forks) {
3285                         print "<td>";
3286                         if ($pr->{'forks'}) {
3287                                 print "<!-- $pr->{'forks'} -->\n";
3288                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3289                         }
3290                         print "</td>\n";
3291                 }
3292                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3293                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3294                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3295                                         -class => "list", -title => $pr->{'descr_long'}},
3296                                         esc_html($pr->{'descr'})) . "</td>\n" .
3297                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3298                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3299                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3300                       "<td class=\"link\">" .
3301                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3302                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3303                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3304                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3305                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3306                       "</td>\n" .
3307                       "</tr>\n";
3308         }
3309         if (defined $extra) {
3310                 print "<tr>\n";
3311                 if ($check_forks) {
3312                         print "<td></td>\n";
3313                 }
3314                 print "<td colspan=\"5\">$extra</td>\n" .
3315                       "</tr>\n";
3316         }
3317         print "</table>\n";
3318 }
3319
3320 sub git_shortlog_body {
3321         # uses global variable $project
3322         my ($commitlist, $from, $to, $refs, $extra) = @_;
3323
3324         my $have_snapshot = gitweb_have_snapshot();
3325
3326         $from = 0 unless defined $from;
3327         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3328
3329         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3330         my $alternate = 1;
3331         for (my $i = $from; $i <= $to; $i++) {
3332                 my %co = %{$commitlist->[$i]};
3333                 my $commit = $co{'id'};
3334                 my $ref = format_ref_marker($refs, $commit);
3335                 if ($alternate) {
3336                         print "<tr class=\"dark\">\n";
3337                 } else {
3338                         print "<tr class=\"light\">\n";
3339                 }
3340                 $alternate ^= 1;
3341                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3342                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3343                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3344                       "<td>";
3345                 print format_subject_html($co{'title'}, $co{'title_short'},
3346                                           href(action=>"commit", hash=>$commit), $ref);
3347                 print "</td>\n" .
3348                       "<td class=\"link\">" .
3349                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3350                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3351                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3352                 if ($have_snapshot) {
3353                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3354                 }
3355                 print "</td>\n" .
3356                       "</tr>\n";
3357         }
3358         if (defined $extra) {
3359                 print "<tr>\n" .
3360                       "<td colspan=\"4\">$extra</td>\n" .
3361                       "</tr>\n";
3362         }
3363         print "</table>\n";
3364 }
3365
3366 sub git_history_body {
3367         # Warning: assumes constant type (blob or tree) during history
3368         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3369
3370         $from = 0 unless defined $from;
3371         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3372
3373         print "<table class=\"history\" cellspacing=\"0\">\n";
3374         my $alternate = 1;
3375         for (my $i = $from; $i <= $to; $i++) {
3376                 my %co = %{$commitlist->[$i]};
3377                 if (!%co) {
3378                         next;
3379                 }
3380                 my $commit = $co{'id'};
3381
3382                 my $ref = format_ref_marker($refs, $commit);
3383
3384                 if ($alternate) {
3385                         print "<tr class=\"dark\">\n";
3386                 } else {
3387                         print "<tr class=\"light\">\n";
3388                 }
3389                 $alternate ^= 1;
3390                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3391                       # shortlog uses      chop_str($co{'author_name'}, 10)
3392                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3393                       "<td>";
3394                 # originally git_history used chop_str($co{'title'}, 50)
3395                 print format_subject_html($co{'title'}, $co{'title_short'},
3396                                           href(action=>"commit", hash=>$commit), $ref);
3397                 print "</td>\n" .
3398                       "<td class=\"link\">" .
3399                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3400                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3401
3402                 if ($ftype eq 'blob') {
3403                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3404                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3405                         if (defined $blob_current && defined $blob_parent &&
3406                                         $blob_current ne $blob_parent) {
3407                                 print " | " .
3408                                         $cgi->a({-href => href(action=>"blobdiff",
3409                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3410                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3411                                                                file_name=>$file_name)},
3412                                                 "diff to current");
3413                         }
3414                 }
3415                 print "</td>\n" .
3416                       "</tr>\n";
3417         }
3418         if (defined $extra) {
3419                 print "<tr>\n" .
3420                       "<td colspan=\"4\">$extra</td>\n" .
3421                       "</tr>\n";
3422         }
3423         print "</table>\n";
3424 }
3425
3426 sub git_tags_body {
3427         # uses global variable $project
3428         my ($taglist, $from, $to, $extra) = @_;
3429         $from = 0 unless defined $from;
3430         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3431
3432         print "<table class=\"tags\" cellspacing=\"0\">\n";
3433         my $alternate = 1;
3434         for (my $i = $from; $i <= $to; $i++) {
3435                 my $entry = $taglist->[$i];
3436                 my %tag = %$entry;
3437                 my $comment = $tag{'subject'};
3438                 my $comment_short;
3439                 if (defined $comment) {
3440                         $comment_short = chop_str($comment, 30, 5);
3441                 }
3442                 if ($alternate) {
3443                         print "<tr class=\"dark\">\n";
3444                 } else {
3445                         print "<tr class=\"light\">\n";
3446                 }
3447                 $alternate ^= 1;
3448                 if (defined $tag{'age'}) {
3449                         print "<td><i>$tag{'age'}</i></td>\n";
3450                 } else {
3451                         print "<td></td>\n";
3452                 }
3453                 print "<td>" .
3454                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3455                                -class => "list name"}, esc_html($tag{'name'})) .
3456                       "</td>\n" .
3457                       "<td>";
3458                 if (defined $comment) {
3459                         print format_subject_html($comment, $comment_short,
3460                                                   href(action=>"tag", hash=>$tag{'id'}));
3461                 }
3462                 print "</td>\n" .
3463                       "<td class=\"selflink\">";
3464                 if ($tag{'type'} eq "tag") {
3465                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3466                 } else {
3467                         print "&nbsp;";
3468                 }
3469                 print "</td>\n" .
3470                       "<td class=\"link\">" . " | " .
3471                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3472                 if ($tag{'reftype'} eq "commit") {
3473                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3474                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3475                 } elsif ($tag{'reftype'} eq "blob") {
3476                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3477                 }
3478                 print "</td>\n" .
3479                       "</tr>";
3480         }
3481         if (defined $extra) {
3482                 print "<tr>\n" .
3483                       "<td colspan=\"5\">$extra</td>\n" .
3484                       "</tr>\n";
3485         }
3486         print "</table>\n";
3487 }
3488
3489 sub git_heads_body {
3490         # uses global variable $project
3491         my ($headlist, $head, $from, $to, $extra) = @_;
3492         $from = 0 unless defined $from;
3493         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3494
3495         print "<table class=\"heads\" cellspacing=\"0\">\n";
3496         my $alternate = 1;
3497         for (my $i = $from; $i <= $to; $i++) {
3498                 my $entry = $headlist->[$i];
3499                 my %ref = %$entry;
3500                 my $curr = $ref{'id'} eq $head;
3501                 if ($alternate) {
3502                         print "<tr class=\"dark\">\n";
3503                 } else {
3504                         print "<tr class=\"light\">\n";
3505                 }
3506                 $alternate ^= 1;
3507                 print "<td><i>$ref{'age'}</i></td>\n" .
3508                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3509                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3510                                -class => "list name"},esc_html($ref{'name'})) .
3511                       "</td>\n" .
3512                       "<td class=\"link\">" .
3513                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3514                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3515                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3516                       "</td>\n" .
3517                       "</tr>";
3518         }
3519         if (defined $extra) {
3520                 print "<tr>\n" .
3521                       "<td colspan=\"3\">$extra</td>\n" .
3522                       "</tr>\n";
3523         }
3524         print "</table>\n";
3525 }
3526
3527 sub git_search_grep_body {
3528         my ($commitlist, $from, $to, $extra) = @_;
3529         $from = 0 unless defined $from;
3530         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3531
3532         print "<table class=\"grep\" cellspacing=\"0\">\n";
3533         my $alternate = 1;
3534         for (my $i = $from; $i <= $to; $i++) {
3535                 my %co = %{$commitlist->[$i]};
3536                 if (!%co) {
3537                         next;
3538                 }
3539                 my $commit = $co{'id'};
3540                 if ($alternate) {
3541                         print "<tr class=\"dark\">\n";
3542                 } else {
3543                         print "<tr class=\"light\">\n";
3544                 }
3545                 $alternate ^= 1;
3546                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3547                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3548                       "<td>" .
3549                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3550                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3551                 my $comment = $co{'comment'};
3552                 foreach my $line (@$comment) {
3553                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3554                                 my $lead = esc_html($1) || "";
3555                                 $lead = chop_str($lead, 30, 10);
3556                                 my $match = esc_html($2) || "";
3557                                 my $trail = esc_html($3) || "";
3558                                 $trail = chop_str($trail, 30, 10);
3559                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3560                                 print chop_str($text, 80, 5) . "<br/>\n";
3561                         }
3562                 }
3563                 print "</td>\n" .
3564                       "<td class=\"link\">" .
3565                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3566                       " | " .
3567                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3568                 print "</td>\n" .
3569                       "</tr>\n";
3570         }
3571         if (defined $extra) {
3572                 print "<tr>\n" .
3573                       "<td colspan=\"3\">$extra</td>\n" .
3574                       "</tr>\n";
3575         }
3576         print "</table>\n";
3577 }
3578
3579 ## ======================================================================
3580 ## ======================================================================
3581 ## actions
3582
3583 sub git_project_list {
3584         my $order = $cgi->param('o');
3585         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3586                 die_error(undef, "Unknown order parameter");
3587         }
3588
3589         my @list = git_get_projects_list();
3590         if (!@list) {
3591                 die_error(undef, "No projects found");
3592         }
3593
3594         git_header_html();
3595         if (-f $home_text) {
3596                 print "<div class=\"index_include\">\n";
3597                 open (my $fd, $home_text);
3598                 print <$fd>;
3599                 close $fd;
3600                 print "</div>\n";
3601         }
3602         git_project_list_body(\@list, $order);
3603         git_footer_html();
3604 }
3605
3606 sub git_forks {
3607         my $order = $cgi->param('o');
3608         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3609                 die_error(undef, "Unknown order parameter");
3610         }
3611
3612         my @list = git_get_projects_list($project);
3613         if (!@list) {
3614                 die_error(undef, "No forks found");
3615         }
3616
3617         git_header_html();
3618         git_print_page_nav('','');
3619         git_print_header_div('summary', "$project forks");
3620         git_project_list_body(\@list, $order);
3621         git_footer_html();
3622 }
3623
3624 sub git_project_index {
3625         my @projects = git_get_projects_list($project);
3626
3627         print $cgi->header(
3628                 -type => 'text/plain',
3629                 -charset => 'utf-8',
3630                 -content_disposition => 'inline; filename="index.aux"');
3631
3632         foreach my $pr (@projects) {
3633                 if (!exists $pr->{'owner'}) {
3634                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3635                 }
3636
3637                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3638                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3639                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3640                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3641                 $path  =~ s/ /\+/g;
3642                 $owner =~ s/ /\+/g;
3643
3644                 print "$path $owner\n";
3645         }
3646 }
3647
3648 sub git_summary {
3649         my $descr = git_get_project_description($project) || "none";
3650         my %co = parse_commit("HEAD");
3651         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3652         my $head = $co{'id'};
3653
3654         my $owner = git_get_project_owner($project);
3655
3656         my $refs = git_get_references();
3657         # These get_*_list functions return one more to allow us to see if
3658         # there are more ...
3659         my @taglist  = git_get_tags_list(16);
3660         my @headlist = git_get_heads_list(16);
3661         my @forklist;
3662         my ($check_forks) = gitweb_check_feature('forks');
3663
3664         if ($check_forks) {
3665                 @forklist = git_get_projects_list($project);
3666         }
3667
3668         git_header_html();
3669         git_print_page_nav('summary','', $head);
3670
3671         print "<div class=\"title\">&nbsp;</div>\n";
3672         print "<table cellspacing=\"0\">\n" .
3673               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3674               "<tr><td>owner</td><td>$owner</td></tr>\n";
3675         if (defined $cd{'rfc2822'}) {
3676                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3677         }
3678
3679         # use per project git URL list in $projectroot/$project/cloneurl
3680         # or make project git URL from git base URL and project name
3681         my $url_tag = "URL";
3682         my @url_list = git_get_project_url_list($project);
3683         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3684         foreach my $git_url (@url_list) {
3685                 next unless $git_url;
3686                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3687                 $url_tag = "";
3688         }
3689         print "</table>\n";
3690
3691         if (-s "$projectroot/$project/README.html") {
3692                 if (open my $fd, "$projectroot/$project/README.html") {
3693                         print "<div class=\"title\">readme</div>\n";
3694                         print $_ while (<$fd>);
3695                         close $fd;
3696                 }
3697         }
3698
3699         # we need to request one more than 16 (0..15) to check if
3700         # those 16 are all
3701         my @commitlist = $head ? parse_commits($head, 17) : ();
3702         if (@commitlist) {
3703                 git_print_header_div('shortlog');
3704                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3705                                   $#commitlist <=  15 ? undef :
3706                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3707         }
3708
3709         if (@taglist) {
3710                 git_print_header_div('tags');
3711                 git_tags_body(\@taglist, 0, 15,
3712                               $#taglist <=  15 ? undef :
3713                               $cgi->a({-href => href(action=>"tags")}, "..."));
3714         }
3715
3716         if (@headlist) {
3717                 git_print_header_div('heads');
3718                 git_heads_body(\@headlist, $head, 0, 15,
3719                                $#headlist <= 15 ? undef :
3720                                $cgi->a({-href => href(action=>"heads")}, "..."));
3721         }
3722
3723         if (@forklist) {
3724                 git_print_header_div('forks');
3725                 git_project_list_body(\@forklist, undef, 0, 15,
3726                                       $#forklist <= 15 ? undef :
3727                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3728                                       'noheader');
3729         }
3730
3731         git_footer_html();
3732 }
3733
3734 sub git_tag {
3735         my $head = git_get_head_hash($project);
3736         git_header_html();
3737         git_print_page_nav('','', $head,undef,$head);
3738         my %tag = parse_tag($hash);
3739
3740         if (! %tag) {
3741                 die_error(undef, "Unknown tag object");
3742         }
3743
3744         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3745         print "<div class=\"title_text\">\n" .
3746               "<table cellspacing=\"0\">\n" .
3747               "<tr>\n" .
3748               "<td>object</td>\n" .
3749               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3750                                $tag{'object'}) . "</td>\n" .
3751               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3752                                               $tag{'type'}) . "</td>\n" .
3753               "</tr>\n";
3754         if (defined($tag{'author'})) {
3755                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3756                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3757                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3758                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3759                         "</td></tr>\n";
3760         }
3761         print "</table>\n\n" .
3762               "</div>\n";
3763         print "<div class=\"page_body\">";
3764         my $comment = $tag{'comment'};
3765         foreach my $line (@$comment) {
3766                 chomp $line;
3767                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3768         }
3769         print "</div>\n";
3770         git_footer_html();
3771 }
3772
3773 sub git_blame2 {
3774         my $fd;
3775         my $ftype;
3776
3777         my ($have_blame) = gitweb_check_feature('blame');
3778         if (!$have_blame) {
3779                 die_error('403 Permission denied', "Permission denied");
3780         }
3781         die_error('404 Not Found', "File name not defined") if (!$file_name);
3782         $hash_base ||= git_get_head_hash($project);
3783         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3784         my %co = parse_commit($hash_base)
3785                 or die_error(undef, "Reading commit failed");
3786         if (!defined $hash) {
3787                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3788                         or die_error(undef, "Error looking up file");
3789         }
3790         $ftype = git_get_type($hash);
3791         if ($ftype !~ "blob") {
3792                 die_error('400 Bad Request', "Object is not a blob");
3793         }
3794         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3795               $file_name, $hash_base)
3796                 or die_error(undef, "Open git-blame failed");
3797         git_header_html();
3798         my $formats_nav =
3799                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3800                         "blob") .
3801                 " | " .
3802                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3803                         "history") .
3804                 " | " .
3805                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3806                         "HEAD");
3807         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3808         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3809         git_print_page_path($file_name, $ftype, $hash_base);
3810         my @rev_color = (qw(light2 dark2));
3811         my $num_colors = scalar(@rev_color);
3812         my $current_color = 0;
3813         my $last_rev;
3814         print <<HTML;
3815 <div class="page_body">
3816 <table class="blame">
3817 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3818 HTML
3819         my %metainfo = ();
3820         while (1) {
3821                 $_ = <$fd>;
3822                 last unless defined $_;
3823                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3824                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3825                 if (!exists $metainfo{$full_rev}) {
3826                         $metainfo{$full_rev} = {};
3827                 }
3828                 my $meta = $metainfo{$full_rev};
3829                 while (<$fd>) {
3830                         last if (s/^\t//);
3831                         if (/^(\S+) (.*)$/) {
3832                                 $meta->{$1} = $2;
3833                         }
3834                 }
3835                 my $data = $_;
3836                 chomp $data;
3837                 my $rev = substr($full_rev, 0, 8);
3838                 my $author = $meta->{'author'};
3839                 my %date = parse_date($meta->{'author-time'},
3840                                       $meta->{'author-tz'});
3841                 my $date = $date{'iso-tz'};
3842                 if ($group_size) {
3843                         $current_color = ++$current_color % $num_colors;
3844                 }
3845                 print "<tr class=\"$rev_color[$current_color]\">\n";
3846                 if ($group_size) {
3847                         print "<td class=\"sha1\"";
3848                         print " title=\"". esc_html($author) . ", $date\"";
3849                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3850                         print ">";
3851                         print $cgi->a({-href => href(action=>"commit",
3852                                                      hash=>$full_rev,
3853                                                      file_name=>$file_name)},
3854                                       esc_html($rev));
3855                         print "</td>\n";
3856                 }
3857                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3858                         or die_error(undef, "Open git-rev-parse failed");
3859                 my $parent_commit = <$dd>;
3860                 close $dd;
3861                 chomp($parent_commit);
3862                 my $blamed = href(action => 'blame',
3863                                   file_name => $meta->{'filename'},
3864                                   hash_base => $parent_commit);
3865                 print "<td class=\"linenr\">";
3866                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3867                                 -id => "l$lineno",
3868                                 -class => "linenr" },
3869                               esc_html($lineno));
3870                 print "</td>";
3871                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3872                 print "</tr>\n";
3873         }
3874         print "</table>\n";
3875         print "</div>";
3876         close $fd
3877                 or print "Reading blob failed\n";
3878         git_footer_html();
3879 }
3880
3881 sub git_blame {
3882         my $fd;
3883
3884         my ($have_blame) = gitweb_check_feature('blame');
3885         if (!$have_blame) {
3886                 die_error('403 Permission denied', "Permission denied");
3887         }
3888         die_error('404 Not Found', "File name not defined") if (!$file_name);
3889         $hash_base ||= git_get_head_hash($project);
3890         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3891         my %co = parse_commit($hash_base)
3892                 or die_error(undef, "Reading commit failed");
3893         if (!defined $hash) {
3894                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3895                         or die_error(undef, "Error lookup file");
3896         }
3897         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3898                 or die_error(undef, "Open git-annotate failed");
3899         git_header_html();
3900         my $formats_nav =
3901                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3902                         "blob") .
3903                 " | " .
3904                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3905                         "history") .
3906                 " | " .
3907                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3908                         "HEAD");
3909         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3910         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3911         git_print_page_path($file_name, 'blob', $hash_base);
3912         print "<div class=\"page_body\">\n";
3913         print <<HTML;
3914 <table class="blame">
3915   <tr>
3916     <th>Commit</th>
3917     <th>Age</th>
3918     <th>Author</th>
3919     <th>Line</th>
3920     <th>Data</th>
3921   </tr>
3922 HTML
3923         my @line_class = (qw(light dark));
3924         my $line_class_len = scalar (@line_class);
3925         my $line_class_num = $#line_class;
3926         while (my $line = <$fd>) {
3927                 my $long_rev;
3928                 my $short_rev;
3929                 my $author;
3930                 my $time;
3931                 my $lineno;
3932                 my $data;
3933                 my $age;
3934                 my $age_str;
3935                 my $age_class;
3936
3937                 chomp $line;
3938                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3939
3940                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3941                         $long_rev = $1;
3942                         $author   = $2;
3943                         $time     = $3;
3944                         $lineno   = $4;
3945                         $data     = $5;
3946                 } else {
3947                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3948                         next;
3949                 }
3950                 $short_rev  = substr ($long_rev, 0, 8);
3951                 $age        = time () - $time;
3952                 $age_str    = age_string ($age);
3953                 $age_str    =~ s/ /&nbsp;/g;
3954                 $age_class  = age_class($age);
3955                 $author     = esc_html ($author);
3956                 $author     =~ s/ /&nbsp;/g;
3957
3958                 $data = untabify($data);
3959                 $data = esc_html ($data);
3960
3961                 print <<HTML;
3962   <tr class="$line_class[$line_class_num]">
3963     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3964     <td class="$age_class">$age_str</td>
3965     <td>$author</td>
3966     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3967     <td class="pre">$data</td>
3968   </tr>
3969 HTML
3970         } # while (my $line = <$fd>)
3971         print "</table>\n\n";
3972         close $fd
3973                 or print "Reading blob failed.\n";
3974         print "</div>";
3975         git_footer_html();
3976 }
3977
3978 sub git_tags {
3979         my $head = git_get_head_hash($project);
3980         git_header_html();
3981         git_print_page_nav('','', $head,undef,$head);
3982         git_print_header_div('summary', $project);
3983
3984         my @tagslist = git_get_tags_list();
3985         if (@tagslist) {
3986                 git_tags_body(\@tagslist);
3987         }
3988         git_footer_html();
3989 }
3990
3991 sub git_heads {
3992         my $head = git_get_head_hash($project);
3993         git_header_html();
3994         git_print_page_nav('','', $head,undef,$head);
3995         git_print_header_div('summary', $project);
3996
3997         my @headslist = git_get_heads_list();
3998         if (@headslist) {
3999                 git_heads_body(\@headslist, $head);
4000         }
4001         git_footer_html();
4002 }
4003
4004 sub git_blob_plain {
4005         my $expires;
4006
4007         if (!defined $hash) {
4008                 if (defined $file_name) {
4009                         my $base = $hash_base || git_get_head_hash($project);
4010                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4011                                 or die_error(undef, "Error lookup file");
4012                 } else {
4013                         die_error(undef, "No file name defined");
4014                 }
4015         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4016                 # blobs defined by non-textual hash id's can be cached
4017                 $expires = "+1d";
4018         }
4019
4020         my $type = shift;
4021         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4022                 or die_error(undef, "Couldn't cat $file_name, $hash");
4023
4024         $type ||= blob_mimetype($fd, $file_name);
4025
4026         # save as filename, even when no $file_name is given
4027         my $save_as = "$hash";
4028         if (defined $file_name) {
4029                 $save_as = $file_name;
4030         } elsif ($type =~ m/^text\//) {
4031                 $save_as .= '.txt';
4032         }
4033
4034         print $cgi->header(
4035                 -type => "$type",
4036                 -expires=>$expires,
4037                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4038         undef $/;
4039         binmode STDOUT, ':raw';
4040         print <$fd>;
4041         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4042         $/ = "\n";
4043         close $fd;
4044 }
4045
4046 sub git_blob {
4047         my $expires;
4048
4049         if (!defined $hash) {
4050                 if (defined $file_name) {
4051                         my $base = $hash_base || git_get_head_hash($project);
4052                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4053                                 or die_error(undef, "Error lookup file");
4054                 } else {
4055                         die_error(undef, "No file name defined");
4056                 }
4057         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4058                 # blobs defined by non-textual hash id's can be cached
4059                 $expires = "+1d";
4060         }
4061
4062         my ($have_blame) = gitweb_check_feature('blame');
4063         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4064                 or die_error(undef, "Couldn't cat $file_name, $hash");
4065         my $mimetype = blob_mimetype($fd, $file_name);
4066         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4067                 close $fd;
4068                 return git_blob_plain($mimetype);
4069         }
4070         # we can have blame only for text/* mimetype
4071         $have_blame &&= ($mimetype =~ m!^text/!);
4072
4073         git_header_html(undef, $expires);
4074         my $formats_nav = '';
4075         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4076                 if (defined $file_name) {
4077                         if ($have_blame) {
4078                                 $formats_nav .=
4079                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4080                                                                hash=>$hash, file_name=>$file_name)},
4081                                                 "blame") .
4082                                         " | ";
4083                         }
4084                         $formats_nav .=
4085                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4086                                                        hash=>$hash, file_name=>$file_name)},
4087                                         "history") .
4088                                 " | " .
4089                                 $cgi->a({-href => href(action=>"blob_plain",
4090                                                        hash=>$hash, file_name=>$file_name)},
4091                                         "raw") .
4092                                 " | " .
4093                                 $cgi->a({-href => href(action=>"blob",
4094                                                        hash_base=>"HEAD", file_name=>$file_name)},
4095                                         "HEAD");
4096                 } else {
4097                         $formats_nav .=
4098                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4099                 }
4100                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4101                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4102         } else {
4103                 print "<div class=\"page_nav\">\n" .
4104                       "<br/><br/></div>\n" .
4105                       "<div class=\"title\">$hash</div>\n";
4106         }
4107         git_print_page_path($file_name, "blob", $hash_base);
4108         print "<div class=\"page_body\">\n";
4109         if ($mimetype =~ m!^text/!) {
4110                 my $nr;
4111                 while (my $line = <$fd>) {
4112                         chomp $line;
4113                         $nr++;
4114                         $line = untabify($line);
4115                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4116                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4117                 }
4118         } elsif ($mimetype =~ m!^image/!) {
4119                 print qq!<img type="$mimetype"!;
4120                 if ($file_name) {
4121                         print qq! alt="$file_name" title="$file_name"!;
4122                 }
4123                 print qq! src="! .
4124                       href(action=>"blob_plain", hash=>$hash,
4125                            hash_base=>$hash_base, file_name=>$file_name) .
4126                       qq!" />\n!;
4127         }
4128         close $fd
4129                 or print "Reading blob failed.\n";
4130         print "</div>";
4131         git_footer_html();
4132 }
4133
4134 sub git_tree {
4135         my $have_snapshot = gitweb_have_snapshot();
4136
4137         if (!defined $hash_base) {
4138                 $hash_base = "HEAD";
4139         }
4140         if (!defined $hash) {
4141                 if (defined $file_name) {
4142                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4143                 } else {
4144                         $hash = $hash_base;
4145                 }
4146         }
4147         $/ = "\0";
4148         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4149                 or die_error(undef, "Open git-ls-tree failed");
4150         my @entries = map { chomp; $_ } <$fd>;
4151         close $fd or die_error(undef, "Reading tree failed");
4152         $/ = "\n";
4153
4154         my $refs = git_get_references();
4155         my $ref = format_ref_marker($refs, $hash_base);
4156         git_header_html();
4157         my $basedir = '';
4158         my ($have_blame) = gitweb_check_feature('blame');
4159         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4160                 my @views_nav = ();
4161                 if (defined $file_name) {
4162                         push @views_nav,
4163                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4164                                                        hash=>$hash, file_name=>$file_name)},
4165                                         "history"),
4166                                 $cgi->a({-href => href(action=>"tree",
4167                                                        hash_base=>"HEAD", file_name=>$file_name)},
4168                                         "HEAD"),
4169                 }
4170                 if ($have_snapshot) {
4171                         # FIXME: Should be available when we have no hash base as well.
4172                         push @views_nav,
4173                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4174                                         "snapshot");
4175                 }
4176                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4177                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4178         } else {
4179                 undef $hash_base;
4180                 print "<div class=\"page_nav\">\n";
4181                 print "<br/><br/></div>\n";
4182                 print "<div class=\"title\">$hash</div>\n";
4183         }
4184         if (defined $file_name) {
4185                 $basedir = $file_name;
4186                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4187                         $basedir .= '/';
4188                 }
4189         }
4190         git_print_page_path($file_name, 'tree', $hash_base);
4191         print "<div class=\"page_body\">\n";
4192         print "<table cellspacing=\"0\">\n";
4193         my $alternate = 1;
4194         # '..' (top directory) link if possible
4195         if (defined $hash_base &&
4196             defined $file_name && $file_name =~ m![^/]+$!) {
4197                 if ($alternate) {
4198                         print "<tr class=\"dark\">\n";
4199                 } else {
4200                         print "<tr class=\"light\">\n";
4201                 }
4202                 $alternate ^= 1;
4203
4204                 my $up = $file_name;
4205                 $up =~ s!/?[^/]+$!!;
4206                 undef $up unless $up;
4207                 # based on git_print_tree_entry
4208                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4209                 print '<td class="list">';
4210                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4211                                              file_name=>$up)},
4212                               "..");
4213                 print "</td>\n";
4214                 print "<td class=\"link\"></td>\n";
4215
4216                 print "</tr>\n";
4217         }
4218         foreach my $line (@entries) {
4219                 my %t = parse_ls_tree_line($line, -z => 1);
4220
4221                 if ($alternate) {
4222                         print "<tr class=\"dark\">\n";
4223                 } else {
4224                         print "<tr class=\"light\">\n";
4225                 }
4226                 $alternate ^= 1;
4227
4228                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4229
4230                 print "</tr>\n";
4231         }
4232         print "</table>\n" .
4233               "</div>";
4234         git_footer_html();
4235 }
4236
4237 sub git_snapshot {
4238         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4239         my $have_snapshot = (defined $ctype && defined $suffix);
4240         if (!$have_snapshot) {
4241                 die_error('403 Permission denied', "Permission denied");
4242         }
4243
4244         if (!defined $hash) {
4245                 $hash = git_get_head_hash($project);
4246         }
4247
4248         my $git = git_cmd_str();
4249         my $name = $project;
4250         $name =~ s,([^/])/*\.git$,$1,;
4251         $name = basename($name);
4252         my $filename = to_utf8($name);
4253         $name =~ s/\047/\047\\\047\047/g;
4254         my $cmd;
4255         if ($suffix eq 'zip') {
4256                 $filename .= "-$hash.$suffix";
4257                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4258         } else {
4259                 $filename .= "-$hash.tar.$suffix";
4260                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4261         }
4262
4263         print $cgi->header(
4264                 -type => "application/$ctype",
4265                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4266                 -status => '200 OK');
4267
4268         open my $fd, "-|", $cmd
4269                 or die_error(undef, "Execute git-archive failed");
4270         binmode STDOUT, ':raw';
4271         print <$fd>;
4272         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4273         close $fd;
4274
4275 }
4276
4277 sub git_log {
4278         my $head = git_get_head_hash($project);
4279         if (!defined $hash) {
4280                 $hash = $head;
4281         }
4282         if (!defined $page) {
4283                 $page = 0;
4284         }
4285         my $refs = git_get_references();
4286
4287         my @commitlist = parse_commits($hash, 101, (100 * $page));
4288
4289         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4290
4291         git_header_html();
4292         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4293
4294         if (!@commitlist) {
4295                 my %co = parse_commit($hash);
4296
4297                 git_print_header_div('summary', $project);
4298                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4299         }
4300         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4301         for (my $i = 0; $i <= $to; $i++) {
4302                 my %co = %{$commitlist[$i]};
4303                 next if !%co;
4304                 my $commit = $co{'id'};
4305                 my $ref = format_ref_marker($refs, $commit);
4306                 my %ad = parse_date($co{'author_epoch'});
4307                 git_print_header_div('commit',
4308                                "<span class=\"age\">$co{'age_string'}</span>" .
4309                                esc_html($co{'title'}) . $ref,
4310                                $commit);
4311                 print "<div class=\"title_text\">\n" .
4312                       "<div class=\"log_link\">\n" .
4313                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4314                       " | " .
4315                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4316                       " | " .
4317                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4318                       "<br/>\n" .
4319                       "</div>\n" .
4320                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4321                       "</div>\n";
4322
4323                 print "<div class=\"log_body\">\n";
4324                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4325                 print "</div>\n";
4326         }
4327         if ($#commitlist >= 100) {
4328                 print "<div class=\"page_nav\">\n";
4329                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4330                                -accesskey => "n", -title => "Alt-n"}, "next");
4331                 print "</div>\n";
4332         }
4333         git_footer_html();
4334 }
4335
4336 sub git_commit {
4337         $hash ||= $hash_base || "HEAD";
4338         my %co = parse_commit($hash);
4339         if (!%co) {
4340                 die_error(undef, "Unknown commit object");
4341         }
4342         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4343         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4344
4345         my $parent  = $co{'parent'};
4346         my $parents = $co{'parents'}; # listref
4347
4348         # we need to prepare $formats_nav before any parameter munging
4349         my $formats_nav;
4350         if (!defined $parent) {
4351                 # --root commitdiff
4352                 $formats_nav .= '(initial)';
4353         } elsif (@$parents == 1) {
4354                 # single parent commit
4355                 $formats_nav .=
4356                         '(parent: ' .
4357                         $cgi->a({-href => href(action=>"commit",
4358                                                hash=>$parent)},
4359                                 esc_html(substr($parent, 0, 7))) .
4360                         ')';
4361         } else {
4362                 # merge commit
4363                 $formats_nav .=
4364                         '(merge: ' .
4365                         join(' ', map {
4366                                 $cgi->a({-href => href(action=>"commit",
4367                                                        hash=>$_)},
4368                                         esc_html(substr($_, 0, 7)));
4369                         } @$parents ) .
4370                         ')';
4371         }
4372
4373         if (!defined $parent) {
4374                 $parent = "--root";
4375         }
4376         my @difftree;
4377         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4378                 @diff_opts,
4379                 (@$parents <= 1 ? $parent : '-c'),
4380                 $hash, "--"
4381                 or die_error(undef, "Open git-diff-tree failed");
4382         @difftree = map { chomp; $_ } <$fd>;
4383         close $fd or die_error(undef, "Reading git-diff-tree failed");
4384
4385         # non-textual hash id's can be cached
4386         my $expires;
4387         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4388                 $expires = "+1d";
4389         }
4390         my $refs = git_get_references();
4391         my $ref = format_ref_marker($refs, $co{'id'});
4392
4393         my $have_snapshot = gitweb_have_snapshot();
4394
4395         git_header_html(undef, $expires);
4396         git_print_page_nav('commit', '',
4397                            $hash, $co{'tree'}, $hash,
4398                            $formats_nav);
4399
4400         if (defined $co{'parent'}) {
4401                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4402         } else {
4403                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4404         }
4405         print "<div class=\"title_text\">\n" .
4406               "<table cellspacing=\"0\">\n";
4407         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4408               "<tr>" .
4409               "<td></td><td> $ad{'rfc2822'}";
4410         if ($ad{'hour_local'} < 6) {
4411                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4412                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4413         } else {
4414                 printf(" (%02d:%02d %s)",
4415                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4416         }
4417         print "</td>" .
4418               "</tr>\n";
4419         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4420         print "<tr><td></td><td> $cd{'rfc2822'}" .
4421               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4422               "</td></tr>\n";
4423         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4424         print "<tr>" .
4425               "<td>tree</td>" .
4426               "<td class=\"sha1\">" .
4427               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4428                        class => "list"}, $co{'tree'}) .
4429               "</td>" .
4430               "<td class=\"link\">" .
4431               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4432                       "tree");
4433         if ($have_snapshot) {
4434                 print " | " .
4435                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4436         }
4437         print "</td>" .
4438               "</tr>\n";
4439
4440         foreach my $par (@$parents) {
4441                 print "<tr>" .
4442                       "<td>parent</td>" .
4443                       "<td class=\"sha1\">" .
4444                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4445                                class => "list"}, $par) .
4446                       "</td>" .
4447                       "<td class=\"link\">" .
4448                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4449                       " | " .
4450                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4451                       "</td>" .
4452                       "</tr>\n";
4453         }
4454         print "</table>".
4455               "</div>\n";
4456
4457         print "<div class=\"page_body\">\n";
4458         git_print_log($co{'comment'});
4459         print "</div>\n";
4460
4461         git_difftree_body(\@difftree, $hash, @$parents);
4462
4463         git_footer_html();
4464 }
4465
4466 sub git_object {
4467         # object is defined by:
4468         # - hash or hash_base alone
4469         # - hash_base and file_name
4470         my $type;
4471
4472         # - hash or hash_base alone
4473         if ($hash || ($hash_base && !defined $file_name)) {
4474                 my $object_id = $hash || $hash_base;
4475
4476                 my $git_command = git_cmd_str();
4477                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4478                         or die_error('404 Not Found', "Object does not exist");
4479                 $type = <$fd>;
4480                 chomp $type;
4481                 close $fd
4482                         or die_error('404 Not Found', "Object does not exist");
4483
4484         # - hash_base and file_name
4485         } elsif ($hash_base && defined $file_name) {
4486                 $file_name =~ s,/+$,,;
4487
4488                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4489                         or die_error('404 Not Found', "Base object does not exist");
4490
4491                 # here errors should not hapen
4492                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4493                         or die_error(undef, "Open git-ls-tree failed");
4494                 my $line = <$fd>;
4495                 close $fd;
4496
4497                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4498                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4499                         die_error('404 Not Found', "File or directory for given base does not exist");
4500                 }
4501                 $type = $2;
4502                 $hash = $3;
4503         } else {
4504                 die_error('404 Not Found', "Not enough information to find object");
4505         }
4506
4507         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4508                                           hash=>$hash, hash_base=>$hash_base,
4509                                           file_name=>$file_name),
4510                              -status => '302 Found');
4511 }
4512
4513 sub git_blobdiff {
4514         my $format = shift || 'html';
4515
4516         my $fd;
4517         my @difftree;
4518         my %diffinfo;
4519         my $expires;
4520
4521         # preparing $fd and %diffinfo for git_patchset_body
4522         # new style URI
4523         if (defined $hash_base && defined $hash_parent_base) {
4524                 if (defined $file_name) {
4525                         # read raw output
4526                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4527                                 $hash_parent_base, $hash_base,
4528                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4529                                 or die_error(undef, "Open git-diff-tree failed");
4530                         @difftree = map { chomp; $_ } <$fd>;
4531                         close $fd
4532                                 or die_error(undef, "Reading git-diff-tree failed");
4533                         @difftree
4534                                 or die_error('404 Not Found', "Blob diff not found");
4535
4536                 } elsif (defined $hash &&
4537                          $hash =~ /[0-9a-fA-F]{40}/) {
4538                         # try to find filename from $hash
4539
4540                         # read filtered raw output
4541                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4542                                 $hash_parent_base, $hash_base, "--"
4543                                 or die_error(undef, "Open git-diff-tree failed");
4544                         @difftree =
4545                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4546                                 # $hash == to_id
4547                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4548                                 map { chomp; $_ } <$fd>;
4549                         close $fd
4550                                 or die_error(undef, "Reading git-diff-tree failed");
4551                         @difftree
4552                                 or die_error('404 Not Found', "Blob diff not found");
4553
4554                 } else {
4555                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4556                 }
4557
4558                 if (@difftree > 1) {
4559                         die_error('404 Not Found', "Ambiguous blob diff specification");
4560                 }
4561
4562                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4563                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4564                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4565
4566                 $hash_parent ||= $diffinfo{'from_id'};
4567                 $hash        ||= $diffinfo{'to_id'};
4568
4569                 # non-textual hash id's can be cached
4570                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4571                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4572                         $expires = '+1d';
4573                 }
4574
4575                 # open patch output
4576                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4577                         '-p', ($format eq 'html' ? "--full-index" : ()),
4578                         $hash_parent_base, $hash_base,
4579                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4580                         or die_error(undef, "Open git-diff-tree failed");
4581         }
4582
4583         # old/legacy style URI
4584         if (!%diffinfo && # if new style URI failed
4585             defined $hash && defined $hash_parent) {
4586                 # fake git-diff-tree raw output
4587                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4588                 $diffinfo{'from_id'} = $hash_parent;
4589                 $diffinfo{'to_id'}   = $hash;
4590                 if (defined $file_name) {
4591                         if (defined $file_parent) {
4592                                 $diffinfo{'status'} = '2';
4593                                 $diffinfo{'from_file'} = $file_parent;
4594                                 $diffinfo{'to_file'}   = $file_name;
4595                         } else { # assume not renamed
4596                                 $diffinfo{'status'} = '1';
4597                                 $diffinfo{'from_file'} = $file_name;
4598                                 $diffinfo{'to_file'}   = $file_name;
4599                         }
4600                 } else { # no filename given
4601                         $diffinfo{'status'} = '2';
4602                         $diffinfo{'from_file'} = $hash_parent;
4603                         $diffinfo{'to_file'}   = $hash;
4604                 }
4605
4606                 # non-textual hash id's can be cached
4607                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4608                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4609                         $expires = '+1d';
4610                 }
4611
4612                 # open patch output
4613                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4614                         '-p', ($format eq 'html' ? "--full-index" : ()),
4615                         $hash_parent, $hash, "--"
4616                         or die_error(undef, "Open git-diff failed");
4617         } else  {
4618                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4619                         unless %diffinfo;
4620         }
4621
4622         # header
4623         if ($format eq 'html') {
4624                 my $formats_nav =
4625                         $cgi->a({-href => href(action=>"blobdiff_plain",
4626                                                hash=>$hash, hash_parent=>$hash_parent,
4627                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4628                                                file_name=>$file_name, file_parent=>$file_parent)},
4629                                 "raw");
4630                 git_header_html(undef, $expires);
4631                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4632                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4633                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4634                 } else {
4635                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4636                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4637                 }
4638                 if (defined $file_name) {
4639                         git_print_page_path($file_name, "blob", $hash_base);
4640                 } else {
4641                         print "<div class=\"page_path\"></div>\n";
4642                 }
4643
4644         } elsif ($format eq 'plain') {
4645                 print $cgi->header(
4646                         -type => 'text/plain',
4647                         -charset => 'utf-8',
4648                         -expires => $expires,
4649                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4650
4651                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4652
4653         } else {
4654                 die_error(undef, "Unknown blobdiff format");
4655         }
4656
4657         # patch
4658         if ($format eq 'html') {
4659                 print "<div class=\"page_body\">\n";
4660
4661                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4662                 close $fd;
4663
4664                 print "</div>\n"; # class="page_body"
4665                 git_footer_html();
4666
4667         } else {
4668                 while (my $line = <$fd>) {
4669                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4670                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4671
4672                         print $line;
4673
4674                         last if $line =~ m!^\+\+\+!;
4675                 }
4676                 local $/ = undef;
4677                 print <$fd>;
4678                 close $fd;
4679         }
4680 }
4681
4682 sub git_blobdiff_plain {
4683         git_blobdiff('plain');
4684 }
4685
4686 sub git_commitdiff {
4687         my $format = shift || 'html';
4688         $hash ||= $hash_base || "HEAD";
4689         my %co = parse_commit($hash);
4690         if (!%co) {
4691                 die_error(undef, "Unknown commit object");
4692         }
4693
4694         # choose format for commitdiff for merge
4695         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4696                 $hash_parent = '--cc';
4697         }
4698         # we need to prepare $formats_nav before almost any parameter munging
4699         my $formats_nav;
4700         if ($format eq 'html') {
4701                 $formats_nav =
4702                         $cgi->a({-href => href(action=>"commitdiff_plain",
4703                                                hash=>$hash, hash_parent=>$hash_parent)},
4704                                 "raw");
4705
4706                 if (defined $hash_parent &&
4707                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4708                         # commitdiff with two commits given
4709                         my $hash_parent_short = $hash_parent;
4710                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4711                                 $hash_parent_short = substr($hash_parent, 0, 7);
4712                         }
4713                         $formats_nav .=
4714                                 ' (from';
4715                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4716                                 if ($co{'parents'}[$i] eq $hash_parent) {
4717                                         $formats_nav .= ' parent ' . ($i+1);
4718                                         last;
4719                                 }
4720                         }
4721                         $formats_nav .= ': ' .
4722                                 $cgi->a({-href => href(action=>"commitdiff",
4723                                                        hash=>$hash_parent)},
4724                                         esc_html($hash_parent_short)) .
4725                                 ')';
4726                 } elsif (!$co{'parent'}) {
4727                         # --root commitdiff
4728                         $formats_nav .= ' (initial)';
4729                 } elsif (scalar @{$co{'parents'}} == 1) {
4730                         # single parent commit
4731                         $formats_nav .=
4732                                 ' (parent: ' .
4733                                 $cgi->a({-href => href(action=>"commitdiff",
4734                                                        hash=>$co{'parent'})},
4735                                         esc_html(substr($co{'parent'}, 0, 7))) .
4736                                 ')';
4737                 } else {
4738                         # merge commit
4739                         if ($hash_parent eq '--cc') {
4740                                 $formats_nav .= ' | ' .
4741                                         $cgi->a({-href => href(action=>"commitdiff",
4742                                                                hash=>$hash, hash_parent=>'-c')},
4743                                                 'combined');
4744                         } else { # $hash_parent eq '-c'
4745                                 $formats_nav .= ' | ' .
4746                                         $cgi->a({-href => href(action=>"commitdiff",
4747                                                                hash=>$hash, hash_parent=>'--cc')},
4748                                                 'compact');
4749                         }
4750                         $formats_nav .=
4751                                 ' (merge: ' .
4752                                 join(' ', map {
4753                                         $cgi->a({-href => href(action=>"commitdiff",
4754                                                                hash=>$_)},
4755                                                 esc_html(substr($_, 0, 7)));
4756                                 } @{$co{'parents'}} ) .
4757                                 ')';
4758                 }
4759         }
4760
4761         my $hash_parent_param = $hash_parent;
4762         if (!defined $hash_parent_param) {
4763                 # --cc for multiple parents, --root for parentless
4764                 $hash_parent_param =
4765                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4766         }
4767
4768         # read commitdiff
4769         my $fd;
4770         my @difftree;
4771         if ($format eq 'html') {
4772                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4773                         "--no-commit-id", "--patch-with-raw", "--full-index",
4774                         $hash_parent_param, $hash, "--"
4775                         or die_error(undef, "Open git-diff-tree failed");
4776
4777                 while (my $line = <$fd>) {
4778                         chomp $line;
4779                         # empty line ends raw part of diff-tree output
4780                         last unless $line;
4781                         push @difftree, scalar parse_difftree_raw_line($line);
4782                 }
4783
4784         } elsif ($format eq 'plain') {
4785                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4786                         '-p', $hash_parent_param, $hash, "--"
4787                         or die_error(undef, "Open git-diff-tree failed");
4788
4789         } else {
4790                 die_error(undef, "Unknown commitdiff format");
4791         }
4792
4793         # non-textual hash id's can be cached
4794         my $expires;
4795         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4796                 $expires = "+1d";
4797         }
4798
4799         # write commit message
4800         if ($format eq 'html') {
4801                 my $refs = git_get_references();
4802                 my $ref = format_ref_marker($refs, $co{'id'});
4803
4804                 git_header_html(undef, $expires);
4805                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4806                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4807                 git_print_authorship(\%co);
4808                 print "<div class=\"page_body\">\n";
4809                 if (@{$co{'comment'}} > 1) {
4810                         print "<div class=\"log\">\n";
4811                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4812                         print "</div>\n"; # class="log"
4813                 }
4814
4815         } elsif ($format eq 'plain') {
4816                 my $refs = git_get_references("tags");
4817                 my $tagname = git_get_rev_name_tags($hash);
4818                 my $filename = basename($project) . "-$hash.patch";
4819
4820                 print $cgi->header(
4821                         -type => 'text/plain',
4822                         -charset => 'utf-8',
4823                         -expires => $expires,
4824                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4825                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4826                 print <<TEXT;
4827 From: $co{'author'}
4828 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4829 Subject: $co{'title'}
4830 TEXT
4831                 print "X-Git-Tag: $tagname\n" if $tagname;
4832                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4833
4834                 foreach my $line (@{$co{'comment'}}) {
4835                         print "$line\n";
4836                 }
4837                 print "---\n\n";
4838         }
4839
4840         # write patch
4841         if ($format eq 'html') {
4842                 my $use_parents = !defined $hash_parent ||
4843                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4844                 git_difftree_body(\@difftree, $hash,
4845                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4846                 print "<br/>\n";
4847
4848                 git_patchset_body($fd, \@difftree, $hash,
4849                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4850                 close $fd;
4851                 print "</div>\n"; # class="page_body"
4852                 git_footer_html();
4853
4854         } elsif ($format eq 'plain') {
4855                 local $/ = undef;
4856                 print <$fd>;
4857                 close $fd
4858                         or print "Reading git-diff-tree failed\n";
4859         }
4860 }
4861
4862 sub git_commitdiff_plain {
4863         git_commitdiff('plain');
4864 }
4865
4866 sub git_history {
4867         if (!defined $hash_base) {
4868                 $hash_base = git_get_head_hash($project);
4869         }
4870         if (!defined $page) {
4871                 $page = 0;
4872         }
4873         my $ftype;
4874         my %co = parse_commit($hash_base);
4875         if (!%co) {
4876                 die_error(undef, "Unknown commit object");
4877         }
4878
4879         my $refs = git_get_references();
4880         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4881
4882         if (!defined $hash && defined $file_name) {
4883                 $hash = git_get_hash_by_path($hash_base, $file_name);
4884         }
4885         if (defined $hash) {
4886                 $ftype = git_get_type($hash);
4887         }
4888
4889         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4890
4891         my $paging_nav = '';
4892         if ($page > 0) {
4893                 $paging_nav .=
4894                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4895                                                file_name=>$file_name)},
4896                                 "first");
4897                 $paging_nav .= " &sdot; " .
4898                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4899                                                file_name=>$file_name, page=>$page-1),
4900                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4901         } else {
4902                 $paging_nav .= "first";
4903                 $paging_nav .= " &sdot; prev";
4904         }
4905         if ($#commitlist >= 100) {
4906                 $paging_nav .= " &sdot; " .
4907                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4908                                                file_name=>$file_name, page=>$page+1),
4909                                  -accesskey => "n", -title => "Alt-n"}, "next");
4910         } else {
4911                 $paging_nav .= " &sdot; next";
4912         }
4913         my $next_link = '';
4914         if ($#commitlist >= 100) {
4915                 $next_link =
4916                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4917                                                file_name=>$file_name, page=>$page+1),
4918                                  -accesskey => "n", -title => "Alt-n"}, "next");
4919         }
4920
4921         git_header_html();
4922         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4923         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4924         git_print_page_path($file_name, $ftype, $hash_base);
4925
4926         git_history_body(\@commitlist, 0, 99,
4927                          $refs, $hash_base, $ftype, $next_link);
4928
4929         git_footer_html();
4930 }
4931
4932 sub git_search {
4933         my ($have_search) = gitweb_check_feature('search');
4934         if (!$have_search) {
4935                 die_error('403 Permission denied', "Permission denied");
4936         }
4937         if (!defined $searchtext) {
4938                 die_error(undef, "Text field empty");
4939         }
4940         if (!defined $hash) {
4941                 $hash = git_get_head_hash($project);
4942         }
4943         my %co = parse_commit($hash);
4944         if (!%co) {
4945                 die_error(undef, "Unknown commit object");
4946         }
4947         if (!defined $page) {
4948                 $page = 0;
4949         }
4950
4951         $searchtype ||= 'commit';
4952         if ($searchtype eq 'pickaxe') {
4953                 # pickaxe may take all resources of your box and run for several minutes
4954                 # with every query - so decide by yourself how public you make this feature
4955                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4956                 if (!$have_pickaxe) {
4957                         die_error('403 Permission denied', "Permission denied");
4958                 }
4959         }
4960         if ($searchtype eq 'grep') {
4961                 my ($have_grep) = gitweb_check_feature('grep');
4962                 if (!$have_grep) {
4963                         die_error('403 Permission denied', "Permission denied");
4964                 }
4965         }
4966
4967         git_header_html();
4968
4969         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4970                 my $greptype;
4971                 if ($searchtype eq 'commit') {
4972                         $greptype = "--grep=";
4973                 } elsif ($searchtype eq 'author') {
4974                         $greptype = "--author=";
4975                 } elsif ($searchtype eq 'committer') {
4976                         $greptype = "--committer=";
4977                 }
4978                 $greptype .= $search_regexp;
4979                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4980
4981                 my $paging_nav = '';
4982                 if ($page > 0) {
4983                         $paging_nav .=
4984                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4985                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4986                                         "first");
4987                         $paging_nav .= " &sdot; " .
4988                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4989                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4990                                                        page=>$page-1),
4991                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4992                 } else {
4993                         $paging_nav .= "first";
4994                         $paging_nav .= " &sdot; prev";
4995                 }
4996                 if ($#commitlist >= 100) {
4997                         $paging_nav .= " &sdot; " .
4998                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4999                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5000                                                        page=>$page+1),
5001                                          -accesskey => "n", -title => "Alt-n"}, "next");
5002                 } else {
5003                         $paging_nav .= " &sdot; next";
5004                 }
5005                 my $next_link = '';
5006                 if ($#commitlist >= 100) {
5007                         $next_link =
5008                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5009                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5010                                                        page=>$page+1),
5011                                          -accesskey => "n", -title => "Alt-n"}, "next");
5012                 }
5013
5014                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5015                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5016                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5017         }
5018
5019         if ($searchtype eq 'pickaxe') {
5020                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5021                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5022
5023                 print "<table cellspacing=\"0\">\n";
5024                 my $alternate = 1;
5025                 $/ = "\n";
5026                 my $git_command = git_cmd_str();
5027                 my $searchqtext = $searchtext;
5028                 $searchqtext =~ s/'/'\\''/;
5029                 open my $fd, "-|", "$git_command rev-list $hash | " .
5030                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5031                 undef %co;
5032                 my @files;
5033                 while (my $line = <$fd>) {
5034                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5035                                 my %set;
5036                                 $set{'file'} = $6;
5037                                 $set{'from_id'} = $3;
5038                                 $set{'to_id'} = $4;
5039                                 $set{'id'} = $set{'to_id'};
5040                                 if ($set{'id'} =~ m/0{40}/) {
5041                                         $set{'id'} = $set{'from_id'};
5042                                 }
5043                                 if ($set{'id'} =~ m/0{40}/) {
5044                                         next;
5045                                 }
5046                                 push @files, \%set;
5047                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5048                                 if (%co) {
5049                                         if ($alternate) {
5050                                                 print "<tr class=\"dark\">\n";
5051                                         } else {
5052                                                 print "<tr class=\"light\">\n";
5053                                         }
5054                                         $alternate ^= 1;
5055                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5056                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5057                                               "<td>" .
5058                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5059                                                       -class => "list subject"},
5060                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5061                                         while (my $setref = shift @files) {
5062                                                 my %set = %$setref;
5063                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5064                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5065                                                               -class => "list"},
5066                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5067                                                       "<br/>\n";
5068                                         }
5069                                         print "</td>\n" .
5070                                               "<td class=\"link\">" .
5071                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5072                                               " | " .
5073                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5074                                         print "</td>\n" .
5075                                               "</tr>\n";
5076                                 }
5077                                 %co = parse_commit($1);
5078                         }
5079                 }
5080                 close $fd;
5081
5082                 print "</table>\n";
5083         }
5084
5085         if ($searchtype eq 'grep') {
5086                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5087                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5088
5089                 print "<table cellspacing=\"0\">\n";
5090                 my $alternate = 1;
5091                 my $matches = 0;
5092                 $/ = "\n";
5093                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5094                 my $lastfile = '';
5095                 while (my $line = <$fd>) {
5096                         chomp $line;
5097                         my ($file, $lno, $ltext, $binary);
5098                         last if ($matches++ > 1000);
5099                         if ($line =~ /^Binary file (.+) matches$/) {
5100                                 $file = $1;
5101                                 $binary = 1;
5102                         } else {
5103                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5104                         }
5105                         if ($file ne $lastfile) {
5106                                 $lastfile and print "</td></tr>\n";
5107                                 if ($alternate++) {
5108                                         print "<tr class=\"dark\">\n";
5109                                 } else {
5110                                         print "<tr class=\"light\">\n";
5111                                 }
5112                                 print "<td class=\"list\">".
5113                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5114                                                                file_name=>"$file"),
5115                                                 -class => "list"}, esc_path($file));
5116                                 print "</td><td>\n";
5117                                 $lastfile = $file;
5118                         }
5119                         if ($binary) {
5120                                 print "<div class=\"binary\">Binary file</div>\n";
5121                         } else {
5122                                 $ltext = untabify($ltext);
5123                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5124                                         $ltext = esc_html($1, -nbsp=>1);
5125                                         $ltext .= '<span class="match">';
5126                                         $ltext .= esc_html($2, -nbsp=>1);
5127                                         $ltext .= '</span>';
5128                                         $ltext .= esc_html($3, -nbsp=>1);
5129                                 } else {
5130                                         $ltext = esc_html($ltext, -nbsp=>1);
5131                                 }
5132                                 print "<div class=\"pre\">" .
5133                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5134                                                                file_name=>"$file").'#l'.$lno,
5135                                                 -class => "linenr"}, sprintf('%4i', $lno))
5136                                         . ' ' .  $ltext . "</div>\n";
5137                         }
5138                 }
5139                 if ($lastfile) {
5140                         print "</td></tr>\n";
5141                         if ($matches > 1000) {
5142                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5143                         }
5144                 } else {
5145                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5146                 }
5147                 close $fd;
5148
5149                 print "</table>\n";
5150         }
5151         git_footer_html();
5152 }
5153
5154 sub git_search_help {
5155         git_header_html();
5156         git_print_page_nav('','', $hash,$hash,$hash);
5157         print <<EOT;
5158 <dl>
5159 <dt><b>commit</b></dt>
5160 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5161 EOT
5162         my ($have_grep) = gitweb_check_feature('grep');
5163         if ($have_grep) {
5164                 print <<EOT;
5165 <dt><b>grep</b></dt>
5166 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5167     a different one) are searched for the given
5168 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5169 (POSIX extended) and the matches are listed. On large
5170 trees, this search can take a while and put some strain on the server, so please use it with
5171 some consideration.</dd>
5172 EOT
5173         }
5174         print <<EOT;
5175 <dt><b>author</b></dt>
5176 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5177 <dt><b>committer</b></dt>
5178 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5179 EOT
5180         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5181         if ($have_pickaxe) {
5182                 print <<EOT;
5183 <dt><b>pickaxe</b></dt>
5184 <dd>All commits that caused the string to appear or disappear from any file (changes that
5185 added, removed or "modified" the string) will be listed. This search can take a while and
5186 takes a lot of strain on the server, so please use it wisely.</dd>
5187 EOT
5188         }
5189         print "</dl>\n";
5190         git_footer_html();
5191 }
5192
5193 sub git_shortlog {
5194         my $head = git_get_head_hash($project);
5195         if (!defined $hash) {
5196                 $hash = $head;
5197         }
5198         if (!defined $page) {
5199                 $page = 0;
5200         }
5201         my $refs = git_get_references();
5202
5203         my @commitlist = parse_commits($hash, 101, (100 * $page));
5204
5205         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5206         my $next_link = '';
5207         if ($#commitlist >= 100) {
5208                 $next_link =
5209                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5210                                  -accesskey => "n", -title => "Alt-n"}, "next");
5211         }
5212
5213         git_header_html();
5214         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5215         git_print_header_div('summary', $project);
5216
5217         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5218
5219         git_footer_html();
5220 }
5221
5222 ## ......................................................................
5223 ## feeds (RSS, Atom; OPML)
5224
5225 sub git_feed {
5226         my $format = shift || 'atom';
5227         my ($have_blame) = gitweb_check_feature('blame');
5228
5229         # Atom: http://www.atomenabled.org/developers/syndication/
5230         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5231         if ($format ne 'rss' && $format ne 'atom') {
5232                 die_error(undef, "Unknown web feed format");
5233         }
5234
5235         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5236         my $head = $hash || 'HEAD';
5237         my @commitlist = parse_commits($head, 150);
5238
5239         my %latest_commit;
5240         my %latest_date;
5241         my $content_type = "application/$format+xml";
5242         if (defined $cgi->http('HTTP_ACCEPT') &&
5243                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5244                 # browser (feed reader) prefers text/xml
5245                 $content_type = 'text/xml';
5246         }
5247         if (defined($commitlist[0])) {
5248                 %latest_commit = %{$commitlist[0]};
5249                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5250                 print $cgi->header(
5251                         -type => $content_type,
5252                         -charset => 'utf-8',
5253                         -last_modified => $latest_date{'rfc2822'});
5254         } else {
5255                 print $cgi->header(
5256                         -type => $content_type,
5257                         -charset => 'utf-8');
5258         }
5259
5260         # Optimization: skip generating the body if client asks only
5261         # for Last-Modified date.
5262         return if ($cgi->request_method() eq 'HEAD');
5263
5264         # header variables
5265         my $title = "$site_name - $project/$action";
5266         my $feed_type = 'log';
5267         if (defined $hash) {
5268                 $title .= " - '$hash'";
5269                 $feed_type = 'branch log';
5270                 if (defined $file_name) {
5271                         $title .= " :: $file_name";
5272                         $feed_type = 'history';
5273                 }
5274         } elsif (defined $file_name) {
5275                 $title .= " - $file_name";
5276                 $feed_type = 'history';
5277         }
5278         $title .= " $feed_type";
5279         my $descr = git_get_project_description($project);
5280         if (defined $descr) {
5281                 $descr = esc_html($descr);
5282         } else {
5283                 $descr = "$project " .
5284                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5285                          " feed";
5286         }
5287         my $owner = git_get_project_owner($project);
5288         $owner = esc_html($owner);
5289
5290         #header
5291         my $alt_url;
5292         if (defined $file_name) {
5293                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5294         } elsif (defined $hash) {
5295                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5296         } else {
5297                 $alt_url = href(-full=>1, action=>"summary");
5298         }
5299         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5300         if ($format eq 'rss') {
5301                 print <<XML;
5302 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5303 <channel>
5304 XML
5305                 print "<title>$title</title>\n" .
5306                       "<link>$alt_url</link>\n" .
5307                       "<description>$descr</description>\n" .
5308                       "<language>en</language>\n";
5309         } elsif ($format eq 'atom') {
5310                 print <<XML;
5311 <feed xmlns="http://www.w3.org/2005/Atom">
5312 XML
5313                 print "<title>$title</title>\n" .
5314                       "<subtitle>$descr</subtitle>\n" .
5315                       '<link rel="alternate" type="text/html" href="' .
5316                       $alt_url . '" />' . "\n" .
5317                       '<link rel="self" type="' . $content_type . '" href="' .
5318                       $cgi->self_url() . '" />' . "\n" .
5319                       "<id>" . href(-full=>1) . "</id>\n" .
5320                       # use project owner for feed author
5321                       "<author><name>$owner</name></author>\n";
5322                 if (defined $favicon) {
5323                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5324                 }
5325                 if (defined $logo_url) {
5326                         # not twice as wide as tall: 72 x 27 pixels
5327                         print "<logo>" . esc_url($logo) . "</logo>\n";
5328                 }
5329                 if (! %latest_date) {
5330                         # dummy date to keep the feed valid until commits trickle in:
5331                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5332                 } else {
5333                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5334                 }
5335         }
5336
5337         # contents
5338         for (my $i = 0; $i <= $#commitlist; $i++) {
5339                 my %co = %{$commitlist[$i]};
5340                 my $commit = $co{'id'};
5341                 # we read 150, we always show 30 and the ones more recent than 48 hours
5342                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5343                         last;
5344                 }
5345                 my %cd = parse_date($co{'author_epoch'});
5346
5347                 # get list of changed files
5348                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5349                         $co{'parent'} || "--root",
5350                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5351                         or next;
5352                 my @difftree = map { chomp; $_ } <$fd>;
5353                 close $fd
5354                         or next;
5355
5356                 # print element (entry, item)
5357                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5358                 if ($format eq 'rss') {
5359                         print "<item>\n" .
5360                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5361                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5362                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5363                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5364                               "<link>$co_url</link>\n" .
5365                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5366                               "<content:encoded>" .
5367                               "<![CDATA[\n";
5368                 } elsif ($format eq 'atom') {
5369                         print "<entry>\n" .
5370                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5371                               "<updated>$cd{'iso-8601'}</updated>\n" .
5372                               "<author>\n" .
5373                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5374                         if ($co{'author_email'}) {
5375                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5376                         }
5377                         print "</author>\n" .
5378                               # use committer for contributor
5379                               "<contributor>\n" .
5380                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5381                         if ($co{'committer_email'}) {
5382                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5383                         }
5384                         print "</contributor>\n" .
5385                               "<published>$cd{'iso-8601'}</published>\n" .
5386                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5387                               "<id>$co_url</id>\n" .
5388                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5389                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5390                 }
5391                 my $comment = $co{'comment'};
5392                 print "<pre>\n";
5393                 foreach my $line (@$comment) {
5394                         $line = esc_html($line);
5395                         print "$line\n";
5396                 }
5397                 print "</pre><ul>\n";
5398                 foreach my $difftree_line (@difftree) {
5399                         my %difftree = parse_difftree_raw_line($difftree_line);
5400                         next if !$difftree{'from_id'};
5401
5402                         my $file = $difftree{'file'} || $difftree{'to_file'};
5403
5404                         print "<li>" .
5405                               "[" .
5406                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5407                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5408                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5409                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5410                                       -title => "diff"}, 'D');
5411                         if ($have_blame) {
5412                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5413                                                              file_name=>$file, hash_base=>$commit),
5414                                               -title => "blame"}, 'B');
5415                         }
5416                         # if this is not a feed of a file history
5417                         if (!defined $file_name || $file_name ne $file) {
5418                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5419                                                              file_name=>$file, hash=>$commit),
5420                                               -title => "history"}, 'H');
5421                         }
5422                         $file = esc_path($file);
5423                         print "] ".
5424                               "$file</li>\n";
5425                 }
5426                 if ($format eq 'rss') {
5427                         print "</ul>]]>\n" .
5428                               "</content:encoded>\n" .
5429                               "</item>\n";
5430                 } elsif ($format eq 'atom') {
5431                         print "</ul>\n</div>\n" .
5432                               "</content>\n" .
5433                               "</entry>\n";
5434                 }
5435         }
5436
5437         # end of feed
5438         if ($format eq 'rss') {
5439                 print "</channel>\n</rss>\n";
5440         }       elsif ($format eq 'atom') {
5441                 print "</feed>\n";
5442         }
5443 }
5444
5445 sub git_rss {
5446         git_feed('rss');
5447 }
5448
5449 sub git_atom {
5450         git_feed('atom');
5451 }
5452
5453 sub git_opml {
5454         my @list = git_get_projects_list();
5455
5456         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5457         print <<XML;
5458 <?xml version="1.0" encoding="utf-8"?>
5459 <opml version="1.0">
5460 <head>
5461   <title>$site_name OPML Export</title>
5462 </head>
5463 <body>
5464 <outline text="git RSS feeds">
5465 XML
5466
5467         foreach my $pr (@list) {
5468                 my %proj = %$pr;
5469                 my $head = git_get_head_hash($proj{'path'});
5470                 if (!defined $head) {
5471                         next;
5472                 }
5473                 $git_dir = "$projectroot/$proj{'path'}";
5474                 my %co = parse_commit($head);
5475                 if (!%co) {
5476                         next;
5477                 }
5478
5479                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5480                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5481                 my $html = "$my_url?p=$proj{'path'};a=summary";
5482                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5483         }
5484         print <<XML;
5485 </outline>
5486 </body>
5487 </opml>
5488 XML
5489 }