Lady’s Gitweb - Gitweb/blob - gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # default order of projects list
  76 # valid values are none, project, descr, owner, and age
  77 our $default_projects_order = "project";
  78
  79 # show repository only if this file exists
  80 # (only effective if this variable evaluates to true)
  81 our $export_ok = "++GITWEB_EXPORT_OK++";
  82
  83 # only allow viewing of repositories also shown on the overview page
  84 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  85
  86 # list of git base URLs used for URL to where fetch project from,
  87 # i.e. full URL is "$git_base_url/$project"
  88 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  89
  90 # default blob_plain mimetype and default charset for text/plain blob
  91 our $default_blob_plain_mimetype = 'text/plain';
  92 our $default_text_plain_charset  = undef;
  93
  94 # file to use for guessing MIME types before trying /etc/mime.types
  95 # (relative to the current git repository)
  96 our $mimetypes_file = undef;
  97
  98 # assume this charset if line contains non-UTF-8 characters;
  99 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 100 # for which encoding all byte sequences are valid, for example
 101 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 102 # could be even 'utf-8' for the old behavior)
 103 our $fallback_encoding = 'latin1';
 104
 105 # You define site-wide feature defaults here; override them with
 106 # $GITWEB_CONFIG as necessary.
 107 our %feature = (
 108         # feature => {
 109         #       'sub' => feature-sub (subroutine),
 110         #       'override' => allow-override (boolean),
 111         #       'default' => [ default options...] (array reference)}
 112         #
 113         # if feature is overridable (it means that allow-override has true value),
 114         # then feature-sub will be called with default options as parameters;
 115         # return value of feature-sub indicates if to enable specified feature
 116         #
 117         # if there is no 'sub' key (no feature-sub), then feature cannot be
 118         # overriden
 119         #
 120         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 121
 122         # Enable the 'blame' blob view, showing the last commit that modified
 123         # each line in the file. This can be very CPU-intensive.
 124
 125         # To enable system wide have in $GITWEB_CONFIG
 126         # $feature{'blame'}{'default'} = [1];
 127         # To have project specific config enable override in $GITWEB_CONFIG
 128         # $feature{'blame'}{'override'} = 1;
 129         # and in project config gitweb.blame = 0|1;
 130         'blame' => {
 131                 'sub' => \&feature_blame,
 132                 'override' => 0,
 133                 'default' => [0]},
 134
 135         # Enable the 'snapshot' link, providing a compressed tarball of any
 136         # tree. This can potentially generate high traffic if you have large
 137         # project.
 138
 139         # To disable system wide have in $GITWEB_CONFIG
 140         # $feature{'snapshot'}{'default'} = [undef];
 141         # To have project specific config enable override in $GITWEB_CONFIG
 142         # $feature{'snapshot'}{'override'} = 1;
 143         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 144         'snapshot' => {
 145                 'sub' => \&feature_snapshot,
 146                 'override' => 0,
 147                 #         => [content-encoding, suffix, program]
 148                 'default' => ['x-gzip', 'gz', 'gzip']},
 149
 150         # Enable text search, which will list the commits which match author,
 151         # committer or commit text to a given string.  Enabled by default.
 152         # Project specific override is not supported.
 153         'search' => {
 154                 'override' => 0,
 155                 'default' => [1]},
 156
 157         # Enable grep search, which will list the files in currently selected
 158         # tree containing the given string. Enabled by default. This can be
 159         # potentially CPU-intensive, of course.
 160
 161         # To enable system wide have in $GITWEB_CONFIG
 162         # $feature{'grep'}{'default'} = [1];
 163         # To have project specific config enable override in $GITWEB_CONFIG
 164         # $feature{'grep'}{'override'} = 1;
 165         # and in project config gitweb.grep = 0|1;
 166         'grep' => {
 167                 'override' => 0,
 168                 'default' => [1]},
 169
 170         # Enable the pickaxe search, which will list the commits that modified
 171         # a given string in a file. This can be practical and quite faster
 172         # alternative to 'blame', but still potentially CPU-intensive.
 173
 174         # To enable system wide have in $GITWEB_CONFIG
 175         # $feature{'pickaxe'}{'default'} = [1];
 176         # To have project specific config enable override in $GITWEB_CONFIG
 177         # $feature{'pickaxe'}{'override'} = 1;
 178         # and in project config gitweb.pickaxe = 0|1;
 179         'pickaxe' => {
 180                 'sub' => \&feature_pickaxe,
 181                 'override' => 0,
 182                 'default' => [1]},
 183
 184         # Make gitweb use an alternative format of the URLs which can be
 185         # more readable and natural-looking: project name is embedded
 186         # directly in the path and the query string contains other
 187         # auxiliary information. All gitweb installations recognize
 188         # URL in either format; this configures in which formats gitweb
 189         # generates links.
 190
 191         # To enable system wide have in $GITWEB_CONFIG
 192         # $feature{'pathinfo'}{'default'} = [1];
 193         # Project specific override is not supported.
 194
 195         # Note that you will need to change the default location of CSS,
 196         # favicon, logo and possibly other files to an absolute URL. Also,
 197         # if gitweb.cgi serves as your indexfile, you will need to force
 198         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 199         'pathinfo' => {
 200                 'override' => 0,
 201                 'default' => [0]},
 202
 203         # Make gitweb consider projects in project root subdirectories
 204         # to be forks of existing projects. Given project $projname.git,
 205         # projects matching $projname/*.git will not be shown in the main
 206         # projects list, instead a '+' mark will be added to $projname
 207         # there and a 'forks' view will be enabled for the project, listing
 208         # all the forks. If project list is taken from a file, forks have
 209         # to be listed after the main project.
 210
 211         # To enable system wide have in $GITWEB_CONFIG
 212         # $feature{'forks'}{'default'} = [1];
 213         # Project specific override is not supported.
 214         'forks' => {
 215                 'override' => 0,
 216                 'default' => [0]},
 217 );
 218
 219 sub gitweb_check_feature {
 220         my ($name) = @_;
 221         return unless exists $feature{$name};
 222         my ($sub, $override, @defaults) = (
 223                 $feature{$name}{'sub'},
 224                 $feature{$name}{'override'},
 225                 @{$feature{$name}{'default'}});
 226         if (!$override) { return @defaults; }
 227         if (!defined $sub) {
 228                 warn "feature $name is not overrideable";
 229                 return @defaults;
 230         }
 231         return $sub->(@defaults);
 232 }
 233
 234 sub feature_blame {
 235         my ($val) = git_get_project_config('blame', '--bool');
 236
 237         if ($val eq 'true') {
 238                 return 1;
 239         } elsif ($val eq 'false') {
 240                 return 0;
 241         }
 242
 243         return $_[0];
 244 }
 245
 246 sub feature_snapshot {
 247         my ($ctype, $suffix, $command) = @_;
 248
 249         my ($val) = git_get_project_config('snapshot');
 250
 251         if ($val eq 'gzip') {
 252                 return ('x-gzip', 'gz', 'gzip');
 253         } elsif ($val eq 'bzip2') {
 254                 return ('x-bzip2', 'bz2', 'bzip2');
 255         } elsif ($val eq 'zip') {
 256                 return ('x-zip', 'zip', '');
 257         } elsif ($val eq 'none') {
 258                 return ();
 259         }
 260
 261         return ($ctype, $suffix, $command);
 262 }
 263
 264 sub gitweb_have_snapshot {
 265         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 266         my $have_snapshot = (defined $ctype && defined $suffix);
 267
 268         return $have_snapshot;
 269 }
 270
 271 sub feature_grep {
 272         my ($val) = git_get_project_config('grep', '--bool');
 273
 274         if ($val eq 'true') {
 275                 return (1);
 276         } elsif ($val eq 'false') {
 277                 return (0);
 278         }
 279
 280         return ($_[0]);
 281 }
 282
 283 sub feature_pickaxe {
 284         my ($val) = git_get_project_config('pickaxe', '--bool');
 285
 286         if ($val eq 'true') {
 287                 return (1);
 288         } elsif ($val eq 'false') {
 289                 return (0);
 290         }
 291
 292         return ($_[0]);
 293 }
 294
 295 # checking HEAD file with -e is fragile if the repository was
 296 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 297 # and then pruned.
 298 sub check_head_link {
 299         my ($dir) = @_;
 300         my $headfile = "$dir/HEAD";
 301         return ((-e $headfile) ||
 302                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 303 }
 304
 305 sub check_export_ok {
 306         my ($dir) = @_;
 307         return (check_head_link($dir) &&
 308                 (!$export_ok || -e "$dir/$export_ok"));
 309 }
 310
 311 # rename detection options for git-diff and git-diff-tree
 312 # - default is '-M', with the cost proportional to
 313 #   (number of removed files) * (number of new files).
 314 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 315 #   (number of changed files + number of removed files) * (number of new files)
 316 # - even more costly is '-C', '--find-copies-harder' with cost
 317 #   (number of files in the original tree) * (number of new files)
 318 # - one might want to include '-B' option, e.g. '-B', '-M'
 319 our @diff_opts = ('-M'); # taken from git_commit
 320
 321 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 322 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 323
 324 # version of the core git binary
 325 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 326
 327 $projects_list ||= $projectroot;
 328
 329 # ======================================================================
 330 # input validation and dispatch
 331 our $action = $cgi->param('a');
 332 if (defined $action) {
 333         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 334                 die_error(undef, "Invalid action parameter");
 335         }
 336 }
 337
 338 # parameters which are pathnames
 339 our $project = $cgi->param('p');
 340 if (defined $project) {
 341         if (!validate_pathname($project) ||
 342             !(-d "$projectroot/$project") ||
 343             !check_head_link("$projectroot/$project") ||
 344             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 345             ($strict_export && !project_in_list($project))) {
 346                 undef $project;
 347                 die_error(undef, "No such project");
 348         }
 349 }
 350
 351 our $file_name = $cgi->param('f');
 352 if (defined $file_name) {
 353         if (!validate_pathname($file_name)) {
 354                 die_error(undef, "Invalid file parameter");
 355         }
 356 }
 357
 358 our $file_parent = $cgi->param('fp');
 359 if (defined $file_parent) {
 360         if (!validate_pathname($file_parent)) {
 361                 die_error(undef, "Invalid file parent parameter");
 362         }
 363 }
 364
 365 # parameters which are refnames
 366 our $hash = $cgi->param('h');
 367 if (defined $hash) {
 368         if (!validate_refname($hash)) {
 369                 die_error(undef, "Invalid hash parameter");
 370         }
 371 }
 372
 373 our $hash_parent = $cgi->param('hp');
 374 if (defined $hash_parent) {
 375         if (!validate_refname($hash_parent)) {
 376                 die_error(undef, "Invalid hash parent parameter");
 377         }
 378 }
 379
 380 our $hash_base = $cgi->param('hb');
 381 if (defined $hash_base) {
 382         if (!validate_refname($hash_base)) {
 383                 die_error(undef, "Invalid hash base parameter");
 384         }
 385 }
 386
 387 our $hash_parent_base = $cgi->param('hpb');
 388 if (defined $hash_parent_base) {
 389         if (!validate_refname($hash_parent_base)) {
 390                 die_error(undef, "Invalid hash parent base parameter");
 391         }
 392 }
 393
 394 # other parameters
 395 our $page = $cgi->param('pg');
 396 if (defined $page) {
 397         if ($page =~ m/[^0-9]/) {
 398                 die_error(undef, "Invalid page parameter");
 399         }
 400 }
 401
 402 our $searchtype = $cgi->param('st');
 403 if (defined $searchtype) {
 404         if ($searchtype =~ m/[^a-z]/) {
 405                 die_error(undef, "Invalid searchtype parameter");
 406         }
 407 }
 408
 409 our $searchtext = $cgi->param('s');
 410 our $search_regexp;
 411 if (defined $searchtext) {
 412         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 413                 die_error(undef, "Invalid search parameter");
 414         }
 415         if (length($searchtext) < 2) {
 416                 die_error(undef, "At least two characters are required for search parameter");
 417         }
 418         $search_regexp = quotemeta $searchtext;
 419 }
 420
 421 # now read PATH_INFO and use it as alternative to parameters
 422 sub evaluate_path_info {
 423         return if defined $project;
 424         my $path_info = $ENV{"PATH_INFO"};
 425         return if !$path_info;
 426         $path_info =~ s,^/+,,;
 427         return if !$path_info;
 428         # find which part of PATH_INFO is project
 429         $project = $path_info;
 430         $project =~ s,/+$,,;
 431         while ($project && !check_head_link("$projectroot/$project")) {
 432                 $project =~ s,/*[^/]*$,,;
 433         }
 434         # validate project
 435         $project = validate_pathname($project);
 436         if (!$project ||
 437             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 438             ($strict_export && !project_in_list($project))) {
 439                 undef $project;
 440                 return;
 441         }
 442         # do not change any parameters if an action is given using the query string
 443         return if $action;
 444         $path_info =~ s,^$project/*,,;
 445         my ($refname, $pathname) = split(/:/, $path_info, 2);
 446         if (defined $pathname) {
 447                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 448                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 449                 $pathname =~ s,^/+,,;
 450                 if (!$pathname || substr($pathname, -1) eq "/") {
 451                         $action  ||= "tree";
 452                         $pathname =~ s,/$,,;
 453                 } else {
 454                         $action  ||= "blob_plain";
 455                 }
 456                 $hash_base ||= validate_refname($refname);
 457                 $file_name ||= validate_pathname($pathname);
 458         } elsif (defined $refname) {
 459                 # we got "project.git/branch"
 460                 $action ||= "shortlog";
 461                 $hash   ||= validate_refname($refname);
 462         }
 463 }
 464 evaluate_path_info();
 465
 466 # path to the current git repository
 467 our $git_dir;
 468 $git_dir = "$projectroot/$project" if $project;
 469
 470 # dispatch
 471 my %actions = (
 472         "blame" => \&git_blame2,
 473         "blobdiff" => \&git_blobdiff,
 474         "blobdiff_plain" => \&git_blobdiff_plain,
 475         "blob" => \&git_blob,
 476         "blob_plain" => \&git_blob_plain,
 477         "commitdiff" => \&git_commitdiff,
 478         "commitdiff_plain" => \&git_commitdiff_plain,
 479         "commit" => \&git_commit,
 480         "forks" => \&git_forks,
 481         "heads" => \&git_heads,
 482         "history" => \&git_history,
 483         "log" => \&git_log,
 484         "rss" => \&git_rss,
 485         "atom" => \&git_atom,
 486         "search" => \&git_search,
 487         "search_help" => \&git_search_help,
 488         "shortlog" => \&git_shortlog,
 489         "summary" => \&git_summary,
 490         "tag" => \&git_tag,
 491         "tags" => \&git_tags,
 492         "tree" => \&git_tree,
 493         "snapshot" => \&git_snapshot,
 494         "object" => \&git_object,
 495         # those below don't need $project
 496         "opml" => \&git_opml,
 497         "project_list" => \&git_project_list,
 498         "project_index" => \&git_project_index,
 499 );
 500
 501 if (!defined $action) {
 502         if (defined $hash) {
 503                 $action = git_get_type($hash);
 504         } elsif (defined $hash_base && defined $file_name) {
 505                 $action = git_get_type("$hash_base:$file_name");
 506         } elsif (defined $project) {
 507                 $action = 'summary';
 508         } else {
 509                 $action = 'project_list';
 510         }
 511 }
 512 if (!defined($actions{$action})) {
 513         die_error(undef, "Unknown action");
 514 }
 515 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 516     !$project) {
 517         die_error(undef, "Project needed");
 518 }
 519 $actions{$action}->();
 520 exit;
 521
 522 ## ======================================================================
 523 ## action links
 524
 525 sub href(%) {
 526         my %params = @_;
 527         # default is to use -absolute url() i.e. $my_uri
 528         my $href = $params{-full} ? $my_url : $my_uri;
 529
 530         # XXX: Warning: If you touch this, check the search form for updating,
 531         # too.
 532
 533         my @mapping = (
 534                 project => "p",
 535                 action => "a",
 536                 file_name => "f",
 537                 file_parent => "fp",
 538                 hash => "h",
 539                 hash_parent => "hp",
 540                 hash_base => "hb",
 541                 hash_parent_base => "hpb",
 542                 page => "pg",
 543                 order => "o",
 544                 searchtext => "s",
 545                 searchtype => "st",
 546         );
 547         my %mapping = @mapping;
 548
 549         $params{'project'} = $project unless exists $params{'project'};
 550
 551         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 552         if ($use_pathinfo) {
 553                 # use PATH_INFO for project name
 554                 $href .= "/$params{'project'}" if defined $params{'project'};
 555                 delete $params{'project'};
 556
 557                 # Summary just uses the project path URL
 558                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 559                         delete $params{'action'};
 560                 }
 561         }
 562
 563         # now encode the parameters explicitly
 564         my @result = ();
 565         for (my $i = 0; $i < @mapping; $i += 2) {
 566                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 567                 if (defined $params{$name}) {
 568                         push @result, $symbol . "=" . esc_param($params{$name});
 569                 }
 570         }
 571         $href .= "?" . join(';', @result) if scalar @result;
 572
 573         return $href;
 574 }
 575
 576
 577 ## ======================================================================
 578 ## validation, quoting/unquoting and escaping
 579
 580 sub validate_pathname {
 581         my $input = shift || return undef;
 582
 583         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 584         # at the beginning, at the end, and between slashes.
 585         # also this catches doubled slashes
 586         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 587                 return undef;
 588         }
 589         # no null characters
 590         if ($input =~ m!\0!) {
 591                 return undef;
 592         }
 593         return $input;
 594 }
 595
 596 sub validate_refname {
 597         my $input = shift || return undef;
 598
 599         # textual hashes are O.K.
 600         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 601                 return $input;
 602         }
 603         # it must be correct pathname
 604         $input = validate_pathname($input)
 605                 or return undef;
 606         # restrictions on ref name according to git-check-ref-format
 607         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 608                 return undef;
 609         }
 610         return $input;
 611 }
 612
 613 # decode sequences of octets in utf8 into Perl's internal form,
 614 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 615 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 616 sub to_utf8 {
 617         my $str = shift;
 618         my $res;
 619         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 620         if (defined $res) {
 621                 return $res;
 622         } else {
 623                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 624         }
 625 }
 626
 627 # quote unsafe chars, but keep the slash, even when it's not
 628 # correct, but quoted slashes look too horrible in bookmarks
 629 sub esc_param {
 630         my $str = shift;
 631         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 632         $str =~ s/\+/%2B/g;
 633         $str =~ s/ /\+/g;
 634         return $str;
 635 }
 636
 637 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 638 sub esc_url {
 639         my $str = shift;
 640         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 641         $str =~ s/\+/%2B/g;
 642         $str =~ s/ /\+/g;
 643         return $str;
 644 }
 645
 646 # replace invalid utf8 character with SUBSTITUTION sequence
 647 sub esc_html ($;%) {
 648         my $str = shift;
 649         my %opts = @_;
 650
 651         $str = to_utf8($str);
 652         $str = $cgi->escapeHTML($str);
 653         if ($opts{'-nbsp'}) {
 654                 $str =~ s/ /&nbsp;/g;
 655         }
 656         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 657         return $str;
 658 }
 659
 660 # quote control characters and escape filename to HTML
 661 sub esc_path {
 662         my $str = shift;
 663         my %opts = @_;
 664
 665         $str = to_utf8($str);
 666         $str = $cgi->escapeHTML($str);
 667         if ($opts{'-nbsp'}) {
 668                 $str =~ s/ /&nbsp;/g;
 669         }
 670         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 671         return $str;
 672 }
 673
 674 # Make control characters "printable", using character escape codes (CEC)
 675 sub quot_cec {
 676         my $cntrl = shift;
 677         my %es = ( # character escape codes, aka escape sequences
 678                    "\t" => '\t',   # tab            (HT)
 679                    "\n" => '\n',   # line feed      (LF)
 680                    "\r" => '\r',   # carrige return (CR)
 681                    "\f" => '\f',   # form feed      (FF)
 682                    "\b" => '\b',   # backspace      (BS)
 683                    "\a" => '\a',   # alarm (bell)   (BEL)
 684                    "\e" => '\e',   # escape         (ESC)
 685                    "\013" => '\v', # vertical tab   (VT)
 686                    "\000" => '\0', # nul character  (NUL)
 687                    );
 688         my $chr = ( (exists $es{$cntrl})
 689                     ? $es{$cntrl}
 690                     : sprintf('\%03o', ord($cntrl)) );
 691         return "<span class=\"cntrl\">$chr</span>";
 692 }
 693
 694 # Alternatively use unicode control pictures codepoints,
 695 # Unicode "printable representation" (PR)
 696 sub quot_upr {
 697         my $cntrl = shift;
 698         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 699         return "<span class=\"cntrl\">$chr</span>";
 700 }
 701
 702 # git may return quoted and escaped filenames
 703 sub unquote {
 704         my $str = shift;
 705
 706         sub unq {
 707                 my $seq = shift;
 708                 my %es = ( # character escape codes, aka escape sequences
 709                         't' => "\t",   # tab            (HT, TAB)
 710                         'n' => "\n",   # newline        (NL)
 711                         'r' => "\r",   # return         (CR)
 712                         'f' => "\f",   # form feed      (FF)
 713                         'b' => "\b",   # backspace      (BS)
 714                         'a' => "\a",   # alarm (bell)   (BEL)
 715                         'e' => "\e",   # escape         (ESC)
 716                         'v' => "\013", # vertical tab   (VT)
 717                 );
 718
 719                 if ($seq =~ m/^[0-7]{1,3}$/) {
 720                         # octal char sequence
 721                         return chr(oct($seq));
 722                 } elsif (exists $es{$seq}) {
 723                         # C escape sequence, aka character escape code
 724                         return $es{$seq}
 725                 }
 726                 # quoted ordinary character
 727                 return $seq;
 728         }
 729
 730         if ($str =~ m/^"(.*)"$/) {
 731                 # needs unquoting
 732                 $str = $1;
 733                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 734         }
 735         return $str;
 736 }
 737
 738 # escape tabs (convert tabs to spaces)
 739 sub untabify {
 740         my $line = shift;
 741
 742         while ((my $pos = index($line, "\t")) != -1) {
 743                 if (my $count = (8 - ($pos % 8))) {
 744                         my $spaces = ' ' x $count;
 745                         $line =~ s/\t/$spaces/;
 746                 }
 747         }
 748
 749         return $line;
 750 }
 751
 752 sub project_in_list {
 753         my $project = shift;
 754         my @list = git_get_projects_list();
 755         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 756 }
 757
 758 ## ----------------------------------------------------------------------
 759 ## HTML aware string manipulation
 760
 761 sub chop_str {
 762         my $str = shift;
 763         my $len = shift;
 764         my $add_len = shift || 10;
 765
 766         # allow only $len chars, but don't cut a word if it would fit in $add_len
 767         # if it doesn't fit, cut it if it's still longer than the dots we would add
 768         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 769         my $body = $1;
 770         my $tail = $2;
 771         if (length($tail) > 4) {
 772                 $tail = " ...";
 773                 $body =~ s/&[^;]*$//; # remove chopped character entities
 774         }
 775         return "$body$tail";
 776 }
 777
 778 ## ----------------------------------------------------------------------
 779 ## functions returning short strings
 780
 781 # CSS class for given age value (in seconds)
 782 sub age_class {
 783         my $age = shift;
 784
 785         if (!defined $age) {
 786                 return "noage";
 787         } elsif ($age < 60*60*2) {
 788                 return "age0";
 789         } elsif ($age < 60*60*24*2) {
 790                 return "age1";
 791         } else {
 792                 return "age2";
 793         }
 794 }
 795
 796 # convert age in seconds to "nn units ago" string
 797 sub age_string {
 798         my $age = shift;
 799         my $age_str;
 800
 801         if ($age > 60*60*24*365*2) {
 802                 $age_str = (int $age/60/60/24/365);
 803                 $age_str .= " years ago";
 804         } elsif ($age > 60*60*24*(365/12)*2) {
 805                 $age_str = int $age/60/60/24/(365/12);
 806                 $age_str .= " months ago";
 807         } elsif ($age > 60*60*24*7*2) {
 808                 $age_str = int $age/60/60/24/7;
 809                 $age_str .= " weeks ago";
 810         } elsif ($age > 60*60*24*2) {
 811                 $age_str = int $age/60/60/24;
 812                 $age_str .= " days ago";
 813         } elsif ($age > 60*60*2) {
 814                 $age_str = int $age/60/60;
 815                 $age_str .= " hours ago";
 816         } elsif ($age > 60*2) {
 817                 $age_str = int $age/60;
 818                 $age_str .= " min ago";
 819         } elsif ($age > 2) {
 820                 $age_str = int $age;
 821                 $age_str .= " sec ago";
 822         } else {
 823                 $age_str .= " right now";
 824         }
 825         return $age_str;
 826 }
 827
 828 # convert file mode in octal to symbolic file mode string
 829 sub mode_str {
 830         my $mode = oct shift;
 831
 832         if (S_ISDIR($mode & S_IFMT)) {
 833                 return 'drwxr-xr-x';
 834         } elsif (S_ISLNK($mode)) {
 835                 return 'lrwxrwxrwx';
 836         } elsif (S_ISREG($mode)) {
 837                 # git cares only about the executable bit
 838                 if ($mode & S_IXUSR) {
 839                         return '-rwxr-xr-x';
 840                 } else {
 841                         return '-rw-r--r--';
 842                 };
 843         } else {
 844                 return '----------';
 845         }
 846 }
 847
 848 # convert file mode in octal to file type string
 849 sub file_type {
 850         my $mode = shift;
 851
 852         if ($mode !~ m/^[0-7]+$/) {
 853                 return $mode;
 854         } else {
 855                 $mode = oct $mode;
 856         }
 857
 858         if (S_ISDIR($mode & S_IFMT)) {
 859                 return "directory";
 860         } elsif (S_ISLNK($mode)) {
 861                 return "symlink";
 862         } elsif (S_ISREG($mode)) {
 863                 return "file";
 864         } else {
 865                 return "unknown";
 866         }
 867 }
 868
 869 # convert file mode in octal to file type description string
 870 sub file_type_long {
 871         my $mode = shift;
 872
 873         if ($mode !~ m/^[0-7]+$/) {
 874                 return $mode;
 875         } else {
 876                 $mode = oct $mode;
 877         }
 878
 879         if (S_ISDIR($mode & S_IFMT)) {
 880                 return "directory";
 881         } elsif (S_ISLNK($mode)) {
 882                 return "symlink";
 883         } elsif (S_ISREG($mode)) {
 884                 if ($mode & S_IXUSR) {
 885                         return "executable";
 886                 } else {
 887                         return "file";
 888                 };
 889         } else {
 890                 return "unknown";
 891         }
 892 }
 893
 894
 895 ## ----------------------------------------------------------------------
 896 ## functions returning short HTML fragments, or transforming HTML fragments
 897 ## which don't belong to other sections
 898
 899 # format line of commit message.
 900 sub format_log_line_html {
 901         my $line = shift;
 902
 903         $line = esc_html($line, -nbsp=>1);
 904         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 905                 my $hash_text = $1;
 906                 my $link =
 907                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 908                                 -class => "text"}, $hash_text);
 909                 $line =~ s/$hash_text/$link/;
 910         }
 911         return $line;
 912 }
 913
 914 # format marker of refs pointing to given object
 915 sub format_ref_marker {
 916         my ($refs, $id) = @_;
 917         my $markers = '';
 918
 919         if (defined $refs->{$id}) {
 920                 foreach my $ref (@{$refs->{$id}}) {
 921                         my ($type, $name) = qw();
 922                         # e.g. tags/v2.6.11 or heads/next
 923                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 924                                 $type = $1;
 925                                 $name = $2;
 926                         } else {
 927                                 $type = "ref";
 928                                 $name = $ref;
 929                         }
 930
 931                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 932                                     esc_html($name) . "</span>";
 933                 }
 934         }
 935
 936         if ($markers) {
 937                 return ' <span class="refs">'. $markers . '</span>';
 938         } else {
 939                 return "";
 940         }
 941 }
 942
 943 # format, perhaps shortened and with markers, title line
 944 sub format_subject_html {
 945         my ($long, $short, $href, $extra) = @_;
 946         $extra = '' unless defined($extra);
 947
 948         if (length($short) < length($long)) {
 949                 return $cgi->a({-href => $href, -class => "list subject",
 950                                 -title => to_utf8($long)},
 951                        esc_html($short) . $extra);
 952         } else {
 953                 return $cgi->a({-href => $href, -class => "list subject"},
 954                        esc_html($long)  . $extra);
 955         }
 956 }
 957
 958 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 959 sub format_git_diff_header_line {
 960         my $line = shift;
 961         my $diffinfo = shift;
 962         my ($from, $to) = @_;
 963
 964         if ($diffinfo->{'nparents'}) {
 965                 # combined diff
 966                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 967                 if ($to->{'href'}) {
 968                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 969                                          esc_path($to->{'file'}));
 970                 } else { # file was deleted (no href)
 971                         $line .= esc_path($to->{'file'});
 972                 }
 973         } else {
 974                 # "ordinary" diff
 975                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 976                 if ($from->{'href'}) {
 977                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 978                                          'a/' . esc_path($from->{'file'}));
 979                 } else { # file was added (no href)
 980                         $line .= 'a/' . esc_path($from->{'file'});
 981                 }
 982                 $line .= ' ';
 983                 if ($to->{'href'}) {
 984                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 985                                          'b/' . esc_path($to->{'file'}));
 986                 } else { # file was deleted
 987                         $line .= 'b/' . esc_path($to->{'file'});
 988                 }
 989         }
 990
 991         return "<div class=\"diff header\">$line</div>\n";
 992 }
 993
 994 # format extended diff header line, before patch itself
 995 sub format_extended_diff_header_line {
 996         my $line = shift;
 997         my $diffinfo = shift;
 998         my ($from, $to) = @_;
 999
1000         # match <path>
1001         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1002                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1003                                        esc_path($from->{'file'}));
1004         }
1005         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1006                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1007                                  esc_path($to->{'file'}));
1008         }
1009         # match single <mode>
1010         if ($line =~ m/\s(\d{6})$/) {
1011                 $line .= '<span class="info"> (' .
1012                          file_type_long($1) .
1013                          ')</span>';
1014         }
1015         # match <hash>
1016         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1017                 # can match only for combined diff
1018                 $line = 'index ';
1019                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1020                         if ($from->{'href'}[$i]) {
1021                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1022                                                   -class=>"hash"},
1023                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1024                         } else {
1025                                 $line .= '0' x 7;
1026                         }
1027                         # separator
1028                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1029                 }
1030                 $line .= '..';
1031                 if ($to->{'href'}) {
1032                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1033                                          substr($diffinfo->{'to_id'},0,7));
1034                 } else {
1035                         $line .= '0' x 7;
1036                 }
1037
1038         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1039                 # can match only for ordinary diff
1040                 my ($from_link, $to_link);
1041                 if ($from->{'href'}) {
1042                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1043                                              substr($diffinfo->{'from_id'},0,7));
1044                 } else {
1045                         $from_link = '0' x 7;
1046                 }
1047                 if ($to->{'href'}) {
1048                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1049                                            substr($diffinfo->{'to_id'},0,7));
1050                 } else {
1051                         $to_link = '0' x 7;
1052                 }
1053                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1054                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1055         }
1056
1057         return $line . "<br/>\n";
1058 }
1059
1060 # format from-file/to-file diff header
1061 sub format_diff_from_to_header {
1062         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1063         my $line;
1064         my $result = '';
1065
1066         $line = $from_line;
1067         #assert($line =~ m/^---/) if DEBUG;
1068         # no extra formatting for "^--- /dev/null"
1069         if (! $diffinfo->{'nparents'}) {
1070                 # ordinary (single parent) diff
1071                 if ($line =~ m!^--- "?a/!) {
1072                         if ($from->{'href'}) {
1073                                 $line = '--- a/' .
1074                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1075                                                 esc_path($from->{'file'}));
1076                         } else {
1077                                 $line = '--- a/' .
1078                                         esc_path($from->{'file'});
1079                         }
1080                 }
1081                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1082
1083         } else {
1084                 # combined diff (merge commit)
1085                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1086                         if ($from->{'href'}[$i]) {
1087                                 $line = '--- ' .
1088                                         $cgi->a({-href=>href(action=>"blobdiff",
1089                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1090                                                              hash_parent_base=>$parents[$i],
1091                                                              file_parent=>$from->{'file'}[$i],
1092                                                              hash=>$diffinfo->{'to_id'},
1093                                                              hash_base=>$hash,
1094                                                              file_name=>$to->{'file'}),
1095                                                  -class=>"path",
1096                                                  -title=>"diff" . ($i+1)},
1097                                                 $i+1) .
1098                                         '/' .
1099                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1100                                                 esc_path($from->{'file'}[$i]));
1101                         } else {
1102                                 $line = '--- /dev/null';
1103                         }
1104                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1105                 }
1106         }
1107
1108         $line = $to_line;
1109         #assert($line =~ m/^\+\+\+/) if DEBUG;
1110         # no extra formatting for "^+++ /dev/null"
1111         if ($line =~ m!^\+\+\+ "?b/!) {
1112                 if ($to->{'href'}) {
1113                         $line = '+++ b/' .
1114                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1115                                         esc_path($to->{'file'}));
1116                 } else {
1117                         $line = '+++ b/' .
1118                                 esc_path($to->{'file'});
1119                 }
1120         }
1121         $result .= qq!<div class="diff to_file">$line</div>\n!;
1122
1123         return $result;
1124 }
1125
1126 # create note for patch simplified by combined diff
1127 sub format_diff_cc_simplified {
1128         my ($diffinfo, @parents) = @_;
1129         my $result = '';
1130
1131         $result .= "<div class=\"diff header\">" .
1132                    "diff --cc ";
1133         if (!is_deleted($diffinfo)) {
1134                 $result .= $cgi->a({-href => href(action=>"blob",
1135                                                   hash_base=>$hash,
1136                                                   hash=>$diffinfo->{'to_id'},
1137                                                   file_name=>$diffinfo->{'to_file'}),
1138                                     -class => "path"},
1139                                    esc_path($diffinfo->{'to_file'}));
1140         } else {
1141                 $result .= esc_path($diffinfo->{'to_file'});
1142         }
1143         $result .= "</div>\n" . # class="diff header"
1144                    "<div class=\"diff nodifferences\">" .
1145                    "Simple merge" .
1146                    "</div>\n"; # class="diff nodifferences"
1147
1148         return $result;
1149 }
1150
1151 # format patch (diff) line (not to be used for diff headers)
1152 sub format_diff_line {
1153         my $line = shift;
1154         my ($from, $to) = @_;
1155         my $diff_class = "";
1156
1157         chomp $line;
1158
1159         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1160                 # combined diff
1161                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1162                 if ($line =~ m/^\@{3}/) {
1163                         $diff_class = " chunk_header";
1164                 } elsif ($line =~ m/^\\/) {
1165                         $diff_class = " incomplete";
1166                 } elsif ($prefix =~ tr/+/+/) {
1167                         $diff_class = " add";
1168                 } elsif ($prefix =~ tr/-/-/) {
1169                         $diff_class = " rem";
1170                 }
1171         } else {
1172                 # assume ordinary diff
1173                 my $char = substr($line, 0, 1);
1174                 if ($char eq '+') {
1175                         $diff_class = " add";
1176                 } elsif ($char eq '-') {
1177                         $diff_class = " rem";
1178                 } elsif ($char eq '@') {
1179                         $diff_class = " chunk_header";
1180                 } elsif ($char eq "\\") {
1181                         $diff_class = " incomplete";
1182                 }
1183         }
1184         $line = untabify($line);
1185         if ($from && $to && $line =~ m/^\@{2} /) {
1186                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1187                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1188
1189                 $from_lines = 0 unless defined $from_lines;
1190                 $to_lines   = 0 unless defined $to_lines;
1191
1192                 if ($from->{'href'}) {
1193                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1194                                              -class=>"list"}, $from_text);
1195                 }
1196                 if ($to->{'href'}) {
1197                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1198                                              -class=>"list"}, $to_text);
1199                 }
1200                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1201                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1202                 return "<div class=\"diff$diff_class\">$line</div>\n";
1203         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1204                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1205                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1206
1207                 @from_text = split(' ', $ranges);
1208                 for (my $i = 0; $i < @from_text; ++$i) {
1209                         ($from_start[$i], $from_nlines[$i]) =
1210                                 (split(',', substr($from_text[$i], 1)), 0);
1211                 }
1212
1213                 $to_text   = pop @from_text;
1214                 $to_start  = pop @from_start;
1215                 $to_nlines = pop @from_nlines;
1216
1217                 $line = "<span class=\"chunk_info\">$prefix ";
1218                 for (my $i = 0; $i < @from_text; ++$i) {
1219                         if ($from->{'href'}[$i]) {
1220                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1221                                                   -class=>"list"}, $from_text[$i]);
1222                         } else {
1223                                 $line .= $from_text[$i];
1224                         }
1225                         $line .= " ";
1226                 }
1227                 if ($to->{'href'}) {
1228                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1229                                           -class=>"list"}, $to_text);
1230                 } else {
1231                         $line .= $to_text;
1232                 }
1233                 $line .= " $prefix</span>" .
1234                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1235                 return "<div class=\"diff$diff_class\">$line</div>\n";
1236         }
1237         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1238 }
1239
1240 ## ----------------------------------------------------------------------
1241 ## git utility subroutines, invoking git commands
1242
1243 # returns path to the core git executable and the --git-dir parameter as list
1244 sub git_cmd {
1245         return $GIT, '--git-dir='.$git_dir;
1246 }
1247
1248 # returns path to the core git executable and the --git-dir parameter as string
1249 sub git_cmd_str {
1250         return join(' ', git_cmd());
1251 }
1252
1253 # get HEAD ref of given project as hash
1254 sub git_get_head_hash {
1255         my $project = shift;
1256         my $o_git_dir = $git_dir;
1257         my $retval = undef;
1258         $git_dir = "$projectroot/$project";
1259         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1260                 my $head = <$fd>;
1261                 close $fd;
1262                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1263                         $retval = $1;
1264                 }
1265         }
1266         if (defined $o_git_dir) {
1267                 $git_dir = $o_git_dir;
1268         }
1269         return $retval;
1270 }
1271
1272 # get type of given object
1273 sub git_get_type {
1274         my $hash = shift;
1275
1276         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1277         my $type = <$fd>;
1278         close $fd or return;
1279         chomp $type;
1280         return $type;
1281 }
1282
1283 sub git_get_project_config {
1284         my ($key, $type) = @_;
1285
1286         return unless ($key);
1287         $key =~ s/^gitweb\.//;
1288         return if ($key =~ m/\W/);
1289
1290         my @x = (git_cmd(), 'config');
1291         if (defined $type) { push @x, $type; }
1292         push @x, "--get";
1293         push @x, "gitweb.$key";
1294         my $val = qx(@x);
1295         chomp $val;
1296         return ($val);
1297 }
1298
1299 # get hash of given path at given ref
1300 sub git_get_hash_by_path {
1301         my $base = shift;
1302         my $path = shift || return undef;
1303         my $type = shift;
1304
1305         $path =~ s,/+$,,;
1306
1307         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1308                 or die_error(undef, "Open git-ls-tree failed");
1309         my $line = <$fd>;
1310         close $fd or return undef;
1311
1312         if (!defined $line) {
1313                 # there is no tree or hash given by $path at $base
1314                 return undef;
1315         }
1316
1317         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1318         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1319         if (defined $type && $type ne $2) {
1320                 # type doesn't match
1321                 return undef;
1322         }
1323         return $3;
1324 }
1325
1326 # get path of entry with given hash at given tree-ish (ref)
1327 # used to get 'from' filename for combined diff (merge commit) for renames
1328 sub git_get_path_by_hash {
1329         my $base = shift || return;
1330         my $hash = shift || return;
1331
1332         local $/ = "\0";
1333
1334         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1335                 or return undef;
1336         while (my $line = <$fd>) {
1337                 chomp $line;
1338
1339                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1340                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1341                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1342                         close $fd;
1343                         return $1;
1344                 }
1345         }
1346         close $fd;
1347         return undef;
1348 }
1349
1350 ## ......................................................................
1351 ## git utility functions, directly accessing git repository
1352
1353 sub git_get_project_description {
1354         my $path = shift;
1355
1356         open my $fd, "$projectroot/$path/description" or return undef;
1357         my $descr = <$fd>;
1358         close $fd;
1359         if (defined $descr) {
1360                 chomp $descr;
1361         }
1362         return $descr;
1363 }
1364
1365 sub git_get_project_url_list {
1366         my $path = shift;
1367
1368         open my $fd, "$projectroot/$path/cloneurl" or return;
1369         my @git_project_url_list = map { chomp; $_ } <$fd>;
1370         close $fd;
1371
1372         return wantarray ? @git_project_url_list : \@git_project_url_list;
1373 }
1374
1375 sub git_get_projects_list {
1376         my ($filter) = @_;
1377         my @list;
1378
1379         $filter ||= '';
1380         $filter =~ s/\.git$//;
1381
1382         my ($check_forks) = gitweb_check_feature('forks');
1383
1384         if (-d $projects_list) {
1385                 # search in directory
1386                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1387                 # remove the trailing "/"
1388                 $dir =~ s!/+$!!;
1389                 my $pfxlen = length("$dir");
1390
1391                 File::Find::find({
1392                         follow_fast => 1, # follow symbolic links
1393                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1394                         wanted => sub {
1395                                 # skip project-list toplevel, if we get it.
1396                                 return if (m!^[/.]$!);
1397                                 # only directories can be git repositories
1398                                 return unless (-d $_);
1399
1400                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1401                                 # we check related file in $projectroot
1402                                 if ($check_forks and $subdir =~ m#/.#) {
1403                                         $File::Find::prune = 1;
1404                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1405                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1406                                         $File::Find::prune = 1;
1407                                 }
1408                         },
1409                 }, "$dir");
1410
1411         } elsif (-f $projects_list) {
1412                 # read from file(url-encoded):
1413                 # 'git%2Fgit.git Linus+Torvalds'
1414                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1415                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1416                 my %paths;
1417                 open my ($fd), $projects_list or return;
1418         PROJECT:
1419                 while (my $line = <$fd>) {
1420                         chomp $line;
1421                         my ($path, $owner) = split ' ', $line;
1422                         $path = unescape($path);
1423                         $owner = unescape($owner);
1424                         if (!defined $path) {
1425                                 next;
1426                         }
1427                         if ($filter ne '') {
1428                                 # looking for forks;
1429                                 my $pfx = substr($path, 0, length($filter));
1430                                 if ($pfx ne $filter) {
1431                                         next PROJECT;
1432                                 }
1433                                 my $sfx = substr($path, length($filter));
1434                                 if ($sfx !~ /^\/.*\.git$/) {
1435                                         next PROJECT;
1436                                 }
1437                         } elsif ($check_forks) {
1438                         PATH:
1439                                 foreach my $filter (keys %paths) {
1440                                         # looking for forks;
1441                                         my $pfx = substr($path, 0, length($filter));
1442                                         if ($pfx ne $filter) {
1443                                                 next PATH;
1444                                         }
1445                                         my $sfx = substr($path, length($filter));
1446                                         if ($sfx !~ /^\/.*\.git$/) {
1447                                                 next PATH;
1448                                         }
1449                                         # is a fork, don't include it in
1450                                         # the list
1451                                         next PROJECT;
1452                                 }
1453                         }
1454                         if (check_export_ok("$projectroot/$path")) {
1455                                 my $pr = {
1456                                         path => $path,
1457                                         owner => to_utf8($owner),
1458                                 };
1459                                 push @list, $pr;
1460                                 (my $forks_path = $path) =~ s/\.git$//;
1461                                 $paths{$forks_path}++;
1462                         }
1463                 }
1464                 close $fd;
1465         }
1466         return @list;
1467 }
1468
1469 our $gitweb_project_owner = undef;
1470 sub git_get_project_list_from_file {
1471
1472         return if (defined $gitweb_project_owner);
1473
1474         $gitweb_project_owner = {};
1475         # read from file (url-encoded):
1476         # 'git%2Fgit.git Linus+Torvalds'
1477         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1478         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1479         if (-f $projects_list) {
1480                 open (my $fd , $projects_list);
1481                 while (my $line = <$fd>) {
1482                         chomp $line;
1483                         my ($pr, $ow) = split ' ', $line;
1484                         $pr = unescape($pr);
1485                         $ow = unescape($ow);
1486                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1487                 }
1488                 close $fd;
1489         }
1490 }
1491
1492 sub git_get_project_owner {
1493         my $project = shift;
1494         my $owner;
1495
1496         return undef unless $project;
1497
1498         if (!defined $gitweb_project_owner) {
1499                 git_get_project_list_from_file();
1500         }
1501
1502         if (exists $gitweb_project_owner->{$project}) {
1503                 $owner = $gitweb_project_owner->{$project};
1504         }
1505         if (!defined $owner) {
1506                 $owner = get_file_owner("$projectroot/$project");
1507         }
1508
1509         return $owner;
1510 }
1511
1512 sub git_get_last_activity {
1513         my ($path) = @_;
1514         my $fd;
1515
1516         $git_dir = "$projectroot/$path";
1517         open($fd, "-|", git_cmd(), 'for-each-ref',
1518              '--format=%(committer)',
1519              '--sort=-committerdate',
1520              '--count=1',
1521              'refs/heads') or return;
1522         my $most_recent = <$fd>;
1523         close $fd or return;
1524         if (defined $most_recent &&
1525             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1526                 my $timestamp = $1;
1527                 my $age = time - $timestamp;
1528                 return ($age, age_string($age));
1529         }
1530         return (undef, undef);
1531 }
1532
1533 sub git_get_references {
1534         my $type = shift || "";
1535         my %refs;
1536         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1537         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1538         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1539                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1540                 or return;
1541
1542         while (my $line = <$fd>) {
1543                 chomp $line;
1544                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1545                         if (defined $refs{$1}) {
1546                                 push @{$refs{$1}}, $2;
1547                         } else {
1548                                 $refs{$1} = [ $2 ];
1549                         }
1550                 }
1551         }
1552         close $fd or return;
1553         return \%refs;
1554 }
1555
1556 sub git_get_rev_name_tags {
1557         my $hash = shift || return undef;
1558
1559         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1560                 or return;
1561         my $name_rev = <$fd>;
1562         close $fd;
1563
1564         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1565                 return $1;
1566         } else {
1567                 # catches also '$hash undefined' output
1568                 return undef;
1569         }
1570 }
1571
1572 ## ----------------------------------------------------------------------
1573 ## parse to hash functions
1574
1575 sub parse_date {
1576         my $epoch = shift;
1577         my $tz = shift || "-0000";
1578
1579         my %date;
1580         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1581         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1582         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1583         $date{'hour'} = $hour;
1584         $date{'minute'} = $min;
1585         $date{'mday'} = $mday;
1586         $date{'day'} = $days[$wday];
1587         $date{'month'} = $months[$mon];
1588         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1589                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1590         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1591                              $mday, $months[$mon], $hour ,$min;
1592         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1593                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1594
1595         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1596         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1597         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1598         $date{'hour_local'} = $hour;
1599         $date{'minute_local'} = $min;
1600         $date{'tz_local'} = $tz;
1601         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1602                                   1900+$year, $mon+1, $mday,
1603                                   $hour, $min, $sec, $tz);
1604         return %date;
1605 }
1606
1607 sub parse_tag {
1608         my $tag_id = shift;
1609         my %tag;
1610         my @comment;
1611
1612         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1613         $tag{'id'} = $tag_id;
1614         while (my $line = <$fd>) {
1615                 chomp $line;
1616                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1617                         $tag{'object'} = $1;
1618                 } elsif ($line =~ m/^type (.+)$/) {
1619                         $tag{'type'} = $1;
1620                 } elsif ($line =~ m/^tag (.+)$/) {
1621                         $tag{'name'} = $1;
1622                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1623                         $tag{'author'} = $1;
1624                         $tag{'epoch'} = $2;
1625                         $tag{'tz'} = $3;
1626                 } elsif ($line =~ m/--BEGIN/) {
1627                         push @comment, $line;
1628                         last;
1629                 } elsif ($line eq "") {
1630                         last;
1631                 }
1632         }
1633         push @comment, <$fd>;
1634         $tag{'comment'} = \@comment;
1635         close $fd or return;
1636         if (!defined $tag{'name'}) {
1637                 return
1638         };
1639         return %tag
1640 }
1641
1642 sub parse_commit_text {
1643         my ($commit_text, $withparents) = @_;
1644         my @commit_lines = split '\n', $commit_text;
1645         my %co;
1646
1647         pop @commit_lines; # Remove '\0'
1648
1649         if (! @commit_lines) {
1650                 return;
1651         }
1652
1653         my $header = shift @commit_lines;
1654         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1655                 return;
1656         }
1657         ($co{'id'}, my @parents) = split ' ', $header;
1658         while (my $line = shift @commit_lines) {
1659                 last if $line eq "\n";
1660                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1661                         $co{'tree'} = $1;
1662                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1663                         push @parents, $1;
1664                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1665                         $co{'author'} = $1;
1666                         $co{'author_epoch'} = $2;
1667                         $co{'author_tz'} = $3;
1668                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1669                                 $co{'author_name'}  = $1;
1670                                 $co{'author_email'} = $2;
1671                         } else {
1672                                 $co{'author_name'} = $co{'author'};
1673                         }
1674                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1675                         $co{'committer'} = $1;
1676                         $co{'committer_epoch'} = $2;
1677                         $co{'committer_tz'} = $3;
1678                         $co{'committer_name'} = $co{'committer'};
1679                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1680                                 $co{'committer_name'}  = $1;
1681                                 $co{'committer_email'} = $2;
1682                         } else {
1683                                 $co{'committer_name'} = $co{'committer'};
1684                         }
1685                 }
1686         }
1687         if (!defined $co{'tree'}) {
1688                 return;
1689         };
1690         $co{'parents'} = \@parents;
1691         $co{'parent'} = $parents[0];
1692
1693         foreach my $title (@commit_lines) {
1694                 $title =~ s/^    //;
1695                 if ($title ne "") {
1696                         $co{'title'} = chop_str($title, 80, 5);
1697                         # remove leading stuff of merges to make the interesting part visible
1698                         if (length($title) > 50) {
1699                                 $title =~ s/^Automatic //;
1700                                 $title =~ s/^merge (of|with) /Merge ... /i;
1701                                 if (length($title) > 50) {
1702                                         $title =~ s/(http|rsync):\/\///;
1703                                 }
1704                                 if (length($title) > 50) {
1705                                         $title =~ s/(master|www|rsync)\.//;
1706                                 }
1707                                 if (length($title) > 50) {
1708                                         $title =~ s/kernel.org:?//;
1709                                 }
1710                                 if (length($title) > 50) {
1711                                         $title =~ s/\/pub\/scm//;
1712                                 }
1713                         }
1714                         $co{'title_short'} = chop_str($title, 50, 5);
1715                         last;
1716                 }
1717         }
1718         if ($co{'title'} eq "") {
1719                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1720         }
1721         # remove added spaces
1722         foreach my $line (@commit_lines) {
1723                 $line =~ s/^    //;
1724         }
1725         $co{'comment'} = \@commit_lines;
1726
1727         my $age = time - $co{'committer_epoch'};
1728         $co{'age'} = $age;
1729         $co{'age_string'} = age_string($age);
1730         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1731         if ($age > 60*60*24*7*2) {
1732                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1733                 $co{'age_string_age'} = $co{'age_string'};
1734         } else {
1735                 $co{'age_string_date'} = $co{'age_string'};
1736                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1737         }
1738         return %co;
1739 }
1740
1741 sub parse_commit {
1742         my ($commit_id) = @_;
1743         my %co;
1744
1745         local $/ = "\0";
1746
1747         open my $fd, "-|", git_cmd(), "rev-list",
1748                 "--parents",
1749                 "--header",
1750                 "--max-count=1",
1751                 $commit_id,
1752                 "--",
1753                 or die_error(undef, "Open git-rev-list failed");
1754         %co = parse_commit_text(<$fd>, 1);
1755         close $fd;
1756
1757         return %co;
1758 }
1759
1760 sub parse_commits {
1761         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1762         my @cos;
1763
1764         $maxcount ||= 1;
1765         $skip ||= 0;
1766
1767         local $/ = "\0";
1768
1769         open my $fd, "-|", git_cmd(), "rev-list",
1770                 "--header",
1771                 ($arg ? ($arg) : ()),
1772                 ("--max-count=" . $maxcount),
1773                 ("--skip=" . $skip),
1774                 $commit_id,
1775                 "--",
1776                 ($filename ? ($filename) : ())
1777                 or die_error(undef, "Open git-rev-list failed");
1778         while (my $line = <$fd>) {
1779                 my %co = parse_commit_text($line);
1780                 push @cos, \%co;
1781         }
1782         close $fd;
1783
1784         return wantarray ? @cos : \@cos;
1785 }
1786
1787 # parse ref from ref_file, given by ref_id, with given type
1788 sub parse_ref {
1789         my $ref_file = shift;
1790         my $ref_id = shift;
1791         my $type = shift || git_get_type($ref_id);
1792         my %ref_item;
1793
1794         $ref_item{'type'} = $type;
1795         $ref_item{'id'} = $ref_id;
1796         $ref_item{'epoch'} = 0;
1797         $ref_item{'age'} = "unknown";
1798         if ($type eq "tag") {
1799                 my %tag = parse_tag($ref_id);
1800                 $ref_item{'comment'} = $tag{'comment'};
1801                 if ($tag{'type'} eq "commit") {
1802                         my %co = parse_commit($tag{'object'});
1803                         $ref_item{'epoch'} = $co{'committer_epoch'};
1804                         $ref_item{'age'} = $co{'age_string'};
1805                 } elsif (defined($tag{'epoch'})) {
1806                         my $age = time - $tag{'epoch'};
1807                         $ref_item{'epoch'} = $tag{'epoch'};
1808                         $ref_item{'age'} = age_string($age);
1809                 }
1810                 $ref_item{'reftype'} = $tag{'type'};
1811                 $ref_item{'name'} = $tag{'name'};
1812                 $ref_item{'refid'} = $tag{'object'};
1813         } elsif ($type eq "commit"){
1814                 my %co = parse_commit($ref_id);
1815                 $ref_item{'reftype'} = "commit";
1816                 $ref_item{'name'} = $ref_file;
1817                 $ref_item{'title'} = $co{'title'};
1818                 $ref_item{'refid'} = $ref_id;
1819                 $ref_item{'epoch'} = $co{'committer_epoch'};
1820                 $ref_item{'age'} = $co{'age_string'};
1821         } else {
1822                 $ref_item{'reftype'} = $type;
1823                 $ref_item{'name'} = $ref_file;
1824                 $ref_item{'refid'} = $ref_id;
1825         }
1826
1827         return %ref_item;
1828 }
1829
1830 # parse line of git-diff-tree "raw" output
1831 sub parse_difftree_raw_line {
1832         my $line = shift;
1833         my %res;
1834
1835         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1836         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1837         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1838                 $res{'from_mode'} = $1;
1839                 $res{'to_mode'} = $2;
1840                 $res{'from_id'} = $3;
1841                 $res{'to_id'} = $4;
1842                 $res{'status'} = $5;
1843                 $res{'similarity'} = $6;
1844                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1845                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1846                 } else {
1847                         $res{'file'} = unquote($7);
1848                 }
1849         }
1850         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1851         # combined diff (for merge commit)
1852         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1853                 $res{'nparents'}  = length($1);
1854                 $res{'from_mode'} = [ split(' ', $2) ];
1855                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1856                 $res{'from_id'} = [ split(' ', $3) ];
1857                 $res{'to_id'} = pop @{$res{'from_id'}};
1858                 $res{'status'} = [ split('', $4) ];
1859                 $res{'to_file'} = unquote($5);
1860         }
1861         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1862         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1863                 $res{'commit'} = $1;
1864         }
1865
1866         return wantarray ? %res : \%res;
1867 }
1868
1869 # parse line of git-ls-tree output
1870 sub parse_ls_tree_line ($;%) {
1871         my $line = shift;
1872         my %opts = @_;
1873         my %res;
1874
1875         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1876         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1877
1878         $res{'mode'} = $1;
1879         $res{'type'} = $2;
1880         $res{'hash'} = $3;
1881         if ($opts{'-z'}) {
1882                 $res{'name'} = $4;
1883         } else {
1884                 $res{'name'} = unquote($4);
1885         }
1886
1887         return wantarray ? %res : \%res;
1888 }
1889
1890 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1891 sub parse_from_to_diffinfo {
1892         my ($diffinfo, $from, $to, @parents) = @_;
1893
1894         if ($diffinfo->{'nparents'}) {
1895                 # combined diff
1896                 $from->{'file'} = [];
1897                 $from->{'href'} = [];
1898                 fill_from_file_info($diffinfo, @parents)
1899                         unless exists $diffinfo->{'from_file'};
1900                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1901                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1902                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1903                                 $from->{'href'}[$i] = href(action=>"blob",
1904                                                            hash_base=>$parents[$i],
1905                                                            hash=>$diffinfo->{'from_id'}[$i],
1906                                                            file_name=>$from->{'file'}[$i]);
1907                         } else {
1908                                 $from->{'href'}[$i] = undef;
1909                         }
1910                 }
1911         } else {
1912                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1913                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1914                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1915                                                hash=>$diffinfo->{'from_id'},
1916                                                file_name=>$from->{'file'});
1917                 } else {
1918                         delete $from->{'href'};
1919                 }
1920         }
1921
1922         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1923         if (!is_deleted($diffinfo)) { # file exists in result
1924                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1925                                      hash=>$diffinfo->{'to_id'},
1926                                      file_name=>$to->{'file'});
1927         } else {
1928                 delete $to->{'href'};
1929         }
1930 }
1931
1932 ## ......................................................................
1933 ## parse to array of hashes functions
1934
1935 sub git_get_heads_list {
1936         my $limit = shift;
1937         my @headslist;
1938
1939         open my $fd, '-|', git_cmd(), 'for-each-ref',
1940                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1941                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1942                 'refs/heads'
1943                 or return;
1944         while (my $line = <$fd>) {
1945                 my %ref_item;
1946
1947                 chomp $line;
1948                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1949                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1950                 my ($committer, $epoch, $tz) =
1951                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1952                 $name =~ s!^refs/heads/!!;
1953
1954                 $ref_item{'name'}  = $name;
1955                 $ref_item{'id'}    = $hash;
1956                 $ref_item{'title'} = $title || '(no commit message)';
1957                 $ref_item{'epoch'} = $epoch;
1958                 if ($epoch) {
1959                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1960                 } else {
1961                         $ref_item{'age'} = "unknown";
1962                 }
1963
1964                 push @headslist, \%ref_item;
1965         }
1966         close $fd;
1967
1968         return wantarray ? @headslist : \@headslist;
1969 }
1970
1971 sub git_get_tags_list {
1972         my $limit = shift;
1973         my @tagslist;
1974
1975         open my $fd, '-|', git_cmd(), 'for-each-ref',
1976                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1977                 '--format=%(objectname) %(objecttype) %(refname) '.
1978                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1979                 'refs/tags'
1980                 or return;
1981         while (my $line = <$fd>) {
1982                 my %ref_item;
1983
1984                 chomp $line;
1985                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1986                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1987                 my ($creator, $epoch, $tz) =
1988                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1989                 $name =~ s!^refs/tags/!!;
1990
1991                 $ref_item{'type'} = $type;
1992                 $ref_item{'id'} = $id;
1993                 $ref_item{'name'} = $name;
1994                 if ($type eq "tag") {
1995                         $ref_item{'subject'} = $title;
1996                         $ref_item{'reftype'} = $reftype;
1997                         $ref_item{'refid'}   = $refid;
1998                 } else {
1999                         $ref_item{'reftype'} = $type;
2000                         $ref_item{'refid'}   = $id;
2001                 }
2002
2003                 if ($type eq "tag" || $type eq "commit") {
2004                         $ref_item{'epoch'} = $epoch;
2005                         if ($epoch) {
2006                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2007                         } else {
2008                                 $ref_item{'age'} = "unknown";
2009                         }
2010                 }
2011
2012                 push @tagslist, \%ref_item;
2013         }
2014         close $fd;
2015
2016         return wantarray ? @tagslist : \@tagslist;
2017 }
2018
2019 ## ----------------------------------------------------------------------
2020 ## filesystem-related functions
2021
2022 sub get_file_owner {
2023         my $path = shift;
2024
2025         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2026         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2027         if (!defined $gcos) {
2028                 return undef;
2029         }
2030         my $owner = $gcos;
2031         $owner =~ s/[,;].*$//;
2032         return to_utf8($owner);
2033 }
2034
2035 ## ......................................................................
2036 ## mimetype related functions
2037
2038 sub mimetype_guess_file {
2039         my $filename = shift;
2040         my $mimemap = shift;
2041         -r $mimemap or return undef;
2042
2043         my %mimemap;
2044         open(MIME, $mimemap) or return undef;
2045         while (<MIME>) {
2046                 next if m/^#/; # skip comments
2047                 my ($mime, $exts) = split(/\t+/);
2048                 if (defined $exts) {
2049                         my @exts = split(/\s+/, $exts);
2050                         foreach my $ext (@exts) {
2051                                 $mimemap{$ext} = $mime;
2052                         }
2053                 }
2054         }
2055         close(MIME);
2056
2057         $filename =~ /\.([^.]*)$/;
2058         return $mimemap{$1};
2059 }
2060
2061 sub mimetype_guess {
2062         my $filename = shift;
2063         my $mime;
2064         $filename =~ /\./ or return undef;
2065
2066         if ($mimetypes_file) {
2067                 my $file = $mimetypes_file;
2068                 if ($file !~ m!^/!) { # if it is relative path
2069                         # it is relative to project
2070                         $file = "$projectroot/$project/$file";
2071                 }
2072                 $mime = mimetype_guess_file($filename, $file);
2073         }
2074         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2075         return $mime;
2076 }
2077
2078 sub blob_mimetype {
2079         my $fd = shift;
2080         my $filename = shift;
2081
2082         if ($filename) {
2083                 my $mime = mimetype_guess($filename);
2084                 $mime and return $mime;
2085         }
2086
2087         # just in case
2088         return $default_blob_plain_mimetype unless $fd;
2089
2090         if (-T $fd) {
2091                 return 'text/plain' .
2092                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2093         } elsif (! $filename) {
2094                 return 'application/octet-stream';
2095         } elsif ($filename =~ m/\.png$/i) {
2096                 return 'image/png';
2097         } elsif ($filename =~ m/\.gif$/i) {
2098                 return 'image/gif';
2099         } elsif ($filename =~ m/\.jpe?g$/i) {
2100                 return 'image/jpeg';
2101         } else {
2102                 return 'application/octet-stream';
2103         }
2104 }
2105
2106 ## ======================================================================
2107 ## functions printing HTML: header, footer, error page
2108
2109 sub git_header_html {
2110         my $status = shift || "200 OK";
2111         my $expires = shift;
2112
2113         my $title = "$site_name";
2114         if (defined $project) {
2115                 $title .= " - " . to_utf8($project);
2116                 if (defined $action) {
2117                         $title .= "/$action";
2118                         if (defined $file_name) {
2119                                 $title .= " - " . esc_path($file_name);
2120                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2121                                         $title .= "/";
2122                                 }
2123                         }
2124                 }
2125         }
2126         my $content_type;
2127         # require explicit support from the UA if we are to send the page as
2128         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2129         # we have to do this because MSIE sometimes globs '*/*', pretending to
2130         # support xhtml+xml but choking when it gets what it asked for.
2131         if (defined $cgi->http('HTTP_ACCEPT') &&
2132             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2133             $cgi->Accept('application/xhtml+xml') != 0) {
2134                 $content_type = 'application/xhtml+xml';
2135         } else {
2136                 $content_type = 'text/html';
2137         }
2138         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2139                            -status=> $status, -expires => $expires);
2140         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2141         print <<EOF;
2142 <?xml version="1.0" encoding="utf-8"?>
2143 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2144 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2145 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2146 <!-- git core binaries version $git_version -->
2147 <head>
2148 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2149 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2150 <meta name="robots" content="index, nofollow"/>
2151 <title>$title</title>
2152 EOF
2153 # print out each stylesheet that exist
2154         if (defined $stylesheet) {
2155 #provides backwards capability for those people who define style sheet in a config file
2156                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2157         } else {
2158                 foreach my $stylesheet (@stylesheets) {
2159                         next unless $stylesheet;
2160                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2161                 }
2162         }
2163         if (defined $project) {
2164                 printf('<link rel="alternate" title="%s log RSS feed" '.
2165                        'href="%s" type="application/rss+xml" />'."\n",
2166                        esc_param($project), href(action=>"rss"));
2167                 printf('<link rel="alternate" title="%s log Atom feed" '.
2168                        'href="%s" type="application/atom+xml" />'."\n",
2169                        esc_param($project), href(action=>"atom"));
2170         } else {
2171                 printf('<link rel="alternate" title="%s projects list" '.
2172                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2173                        $site_name, href(project=>undef, action=>"project_index"));
2174                 printf('<link rel="alternate" title="%s projects feeds" '.
2175                        'href="%s" type="text/x-opml"/>'."\n",
2176                        $site_name, href(project=>undef, action=>"opml"));
2177         }
2178         if (defined $favicon) {
2179                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2180         }
2181
2182         print "</head>\n" .
2183               "<body>\n";
2184
2185         if (-f $site_header) {
2186                 open (my $fd, $site_header);
2187                 print <$fd>;
2188                 close $fd;
2189         }
2190
2191         print "<div class=\"page_header\">\n" .
2192               $cgi->a({-href => esc_url($logo_url),
2193                        -title => $logo_label},
2194                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2195         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2196         if (defined $project) {
2197                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2198                 if (defined $action) {
2199                         print " / $action";
2200                 }
2201                 print "\n";
2202         }
2203         print "</div>\n";
2204
2205         my ($have_search) = gitweb_check_feature('search');
2206         if ((defined $project) && ($have_search)) {
2207                 if (!defined $searchtext) {
2208                         $searchtext = "";
2209                 }
2210                 my $search_hash;
2211                 if (defined $hash_base) {
2212                         $search_hash = $hash_base;
2213                 } elsif (defined $hash) {
2214                         $search_hash = $hash;
2215                 } else {
2216                         $search_hash = "HEAD";
2217                 }
2218                 my $action = $my_uri;
2219                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2220                 if ($use_pathinfo) {
2221                         $action .= "/$project";
2222                 } else {
2223                         $cgi->param("p", $project);
2224                 }
2225                 $cgi->param("a", "search");
2226                 $cgi->param("h", $search_hash);
2227                 print $cgi->startform(-method => "get", -action => $action) .
2228                       "<div class=\"search\">\n" .
2229                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2230                       $cgi->hidden(-name => "a") . "\n" .
2231                       $cgi->hidden(-name => "h") . "\n" .
2232                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2233                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2234                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2235                       " search:\n",
2236                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2237                       "</div>" .
2238                       $cgi->end_form() . "\n";
2239         }
2240 }
2241
2242 sub git_footer_html {
2243         print "<div class=\"page_footer\">\n";
2244         if (defined $project) {
2245                 my $descr = git_get_project_description($project);
2246                 if (defined $descr) {
2247                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2248                 }
2249                 print $cgi->a({-href => href(action=>"rss"),
2250                               -class => "rss_logo"}, "RSS") . " ";
2251                 print $cgi->a({-href => href(action=>"atom"),
2252                               -class => "rss_logo"}, "Atom") . "\n";
2253         } else {
2254                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2255                               -class => "rss_logo"}, "OPML") . " ";
2256                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2257                               -class => "rss_logo"}, "TXT") . "\n";
2258         }
2259         print "</div>\n" ;
2260
2261         if (-f $site_footer) {
2262                 open (my $fd, $site_footer);
2263                 print <$fd>;
2264                 close $fd;
2265         }
2266
2267         print "</body>\n" .
2268               "</html>";
2269 }
2270
2271 sub die_error {
2272         my $status = shift || "403 Forbidden";
2273         my $error = shift || "Malformed query, file missing or permission denied";
2274
2275         git_header_html($status);
2276         print <<EOF;
2277 <div class="page_body">
2278 <br /><br />
2279 $status - $error
2280 <br />
2281 </div>
2282 EOF
2283         git_footer_html();
2284         exit;
2285 }
2286
2287 ## ----------------------------------------------------------------------
2288 ## functions printing or outputting HTML: navigation
2289
2290 sub git_print_page_nav {
2291         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2292         $extra = '' if !defined $extra; # pager or formats
2293
2294         my @navs = qw(summary shortlog log commit commitdiff tree);
2295         if ($suppress) {
2296                 @navs = grep { $_ ne $suppress } @navs;
2297         }
2298
2299         my %arg = map { $_ => {action=>$_} } @navs;
2300         if (defined $head) {
2301                 for (qw(commit commitdiff)) {
2302                         $arg{$_}{'hash'} = $head;
2303                 }
2304                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2305                         for (qw(shortlog log)) {
2306                                 $arg{$_}{'hash'} = $head;
2307                         }
2308                 }
2309         }
2310         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2311         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2312
2313         print "<div class=\"page_nav\">\n" .
2314                 (join " | ",
2315                  map { $_ eq $current ?
2316                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2317                  } @navs);
2318         print "<br/>\n$extra<br/>\n" .
2319               "</div>\n";
2320 }
2321
2322 sub format_paging_nav {
2323         my ($action, $hash, $head, $page, $nrevs) = @_;
2324         my $paging_nav;
2325
2326
2327         if ($hash ne $head || $page) {
2328                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2329         } else {
2330                 $paging_nav .= "HEAD";
2331         }
2332
2333         if ($page > 0) {
2334                 $paging_nav .= " &sdot; " .
2335                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2336                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2337         } else {
2338                 $paging_nav .= " &sdot; prev";
2339         }
2340
2341         if ($nrevs >= (100 * ($page+1)-1)) {
2342                 $paging_nav .= " &sdot; " .
2343                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2344                                  -accesskey => "n", -title => "Alt-n"}, "next");
2345         } else {
2346                 $paging_nav .= " &sdot; next";
2347         }
2348
2349         return $paging_nav;
2350 }
2351
2352 ## ......................................................................
2353 ## functions printing or outputting HTML: div
2354
2355 sub git_print_header_div {
2356         my ($action, $title, $hash, $hash_base) = @_;
2357         my %args = ();
2358
2359         $args{'action'} = $action;
2360         $args{'hash'} = $hash if $hash;
2361         $args{'hash_base'} = $hash_base if $hash_base;
2362
2363         print "<div class=\"header\">\n" .
2364               $cgi->a({-href => href(%args), -class => "title"},
2365               $title ? $title : $action) .
2366               "\n</div>\n";
2367 }
2368
2369 #sub git_print_authorship (\%) {
2370 sub git_print_authorship {
2371         my $co = shift;
2372
2373         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2374         print "<div class=\"author_date\">" .
2375               esc_html($co->{'author_name'}) .
2376               " [$ad{'rfc2822'}";
2377         if ($ad{'hour_local'} < 6) {
2378                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2379                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2380         } else {
2381                 printf(" (%02d:%02d %s)",
2382                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2383         }
2384         print "]</div>\n";
2385 }
2386
2387 sub git_print_page_path {
2388         my $name = shift;
2389         my $type = shift;
2390         my $hb = shift;
2391
2392
2393         print "<div class=\"page_path\">";
2394         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2395                       -title => 'tree root'}, to_utf8("[$project]"));
2396         print " / ";
2397         if (defined $name) {
2398                 my @dirname = split '/', $name;
2399                 my $basename = pop @dirname;
2400                 my $fullname = '';
2401
2402                 foreach my $dir (@dirname) {
2403                         $fullname .= ($fullname ? '/' : '') . $dir;
2404                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2405                                                      hash_base=>$hb),
2406                                       -title => $fullname}, esc_path($dir));
2407                         print " / ";
2408                 }
2409                 if (defined $type && $type eq 'blob') {
2410                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2411                                                      hash_base=>$hb),
2412                                       -title => $name}, esc_path($basename));
2413                 } elsif (defined $type && $type eq 'tree') {
2414                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2415                                                      hash_base=>$hb),
2416                                       -title => $name}, esc_path($basename));
2417                         print " / ";
2418                 } else {
2419                         print esc_path($basename);
2420                 }
2421         }
2422         print "<br/></div>\n";
2423 }
2424
2425 # sub git_print_log (\@;%) {
2426 sub git_print_log ($;%) {
2427         my $log = shift;
2428         my %opts = @_;
2429
2430         if ($opts{'-remove_title'}) {
2431                 # remove title, i.e. first line of log
2432                 shift @$log;
2433         }
2434         # remove leading empty lines
2435         while (defined $log->[0] && $log->[0] eq "") {
2436                 shift @$log;
2437         }
2438
2439         # print log
2440         my $signoff = 0;
2441         my $empty = 0;
2442         foreach my $line (@$log) {
2443                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2444                         $signoff = 1;
2445                         $empty = 0;
2446                         if (! $opts{'-remove_signoff'}) {
2447                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2448                                 next;
2449                         } else {
2450                                 # remove signoff lines
2451                                 next;
2452                         }
2453                 } else {
2454                         $signoff = 0;
2455                 }
2456
2457                 # print only one empty line
2458                 # do not print empty line after signoff
2459                 if ($line eq "") {
2460                         next if ($empty || $signoff);
2461                         $empty = 1;
2462                 } else {
2463                         $empty = 0;
2464                 }
2465
2466                 print format_log_line_html($line) . "<br/>\n";
2467         }
2468
2469         if ($opts{'-final_empty_line'}) {
2470                 # end with single empty line
2471                 print "<br/>\n" unless $empty;
2472         }
2473 }
2474
2475 # return link target (what link points to)
2476 sub git_get_link_target {
2477         my $hash = shift;
2478         my $link_target;
2479
2480         # read link
2481         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2482                 or return;
2483         {
2484                 local $/;
2485                 $link_target = <$fd>;
2486         }
2487         close $fd
2488                 or return;
2489
2490         return $link_target;
2491 }
2492
2493 # given link target, and the directory (basedir) the link is in,
2494 # return target of link relative to top directory (top tree);
2495 # return undef if it is not possible (including absolute links).
2496 sub normalize_link_target {
2497         my ($link_target, $basedir, $hash_base) = @_;
2498
2499         # we can normalize symlink target only if $hash_base is provided
2500         return unless $hash_base;
2501
2502         # absolute symlinks (beginning with '/') cannot be normalized
2503         return if (substr($link_target, 0, 1) eq '/');
2504
2505         # normalize link target to path from top (root) tree (dir)
2506         my $path;
2507         if ($basedir) {
2508                 $path = $basedir . '/' . $link_target;
2509         } else {
2510                 # we are in top (root) tree (dir)
2511                 $path = $link_target;
2512         }
2513
2514         # remove //, /./, and /../
2515         my @path_parts;
2516         foreach my $part (split('/', $path)) {
2517                 # discard '.' and ''
2518                 next if (!$part || $part eq '.');
2519                 # handle '..'
2520                 if ($part eq '..') {
2521                         if (@path_parts) {
2522                                 pop @path_parts;
2523                         } else {
2524                                 # link leads outside repository (outside top dir)
2525                                 return;
2526                         }
2527                 } else {
2528                         push @path_parts, $part;
2529                 }
2530         }
2531         $path = join('/', @path_parts);
2532
2533         return $path;
2534 }
2535
2536 # print tree entry (row of git_tree), but without encompassing <tr> element
2537 sub git_print_tree_entry {
2538         my ($t, $basedir, $hash_base, $have_blame) = @_;
2539
2540         my %base_key = ();
2541         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2542
2543         # The format of a table row is: mode list link.  Where mode is
2544         # the mode of the entry, list is the name of the entry, an href,
2545         # and link is the action links of the entry.
2546
2547         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2548         if ($t->{'type'} eq "blob") {
2549                 print "<td class=\"list\">" .
2550                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2551                                                file_name=>"$basedir$t->{'name'}", %base_key),
2552                                 -class => "list"}, esc_path($t->{'name'}));
2553                 if (S_ISLNK(oct $t->{'mode'})) {
2554                         my $link_target = git_get_link_target($t->{'hash'});
2555                         if ($link_target) {
2556                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2557                                 if (defined $norm_target) {
2558                                         print " -> " .
2559                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2560                                                                      file_name=>$norm_target),
2561                                                        -title => $norm_target}, esc_path($link_target));
2562                                 } else {
2563                                         print " -> " . esc_path($link_target);
2564                                 }
2565                         }
2566                 }
2567                 print "</td>\n";
2568                 print "<td class=\"link\">";
2569                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2570                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2571                               "blob");
2572                 if ($have_blame) {
2573                         print " | " .
2574                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2575                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2576                                       "blame");
2577                 }
2578                 if (defined $hash_base) {
2579                         print " | " .
2580                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2581                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2582                                       "history");
2583                 }
2584                 print " | " .
2585                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2586                                                file_name=>"$basedir$t->{'name'}")},
2587                                 "raw");
2588                 print "</td>\n";
2589
2590         } elsif ($t->{'type'} eq "tree") {
2591                 print "<td class=\"list\">";
2592                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2593                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2594                               esc_path($t->{'name'}));
2595                 print "</td>\n";
2596                 print "<td class=\"link\">";
2597                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2598                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2599                               "tree");
2600                 if (defined $hash_base) {
2601                         print " | " .
2602                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2603                                                      file_name=>"$basedir$t->{'name'}")},
2604                                       "history");
2605                 }
2606                 print "</td>\n";
2607         }
2608 }
2609
2610 ## ......................................................................
2611 ## functions printing large fragments of HTML
2612
2613 sub fill_from_file_info {
2614         my ($diff, @parents) = @_;
2615
2616         $diff->{'from_file'} = [ ];
2617         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2618         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2619                 if ($diff->{'status'}[$i] eq 'R' ||
2620                     $diff->{'status'}[$i] eq 'C') {
2621                         $diff->{'from_file'}[$i] =
2622                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2623                 }
2624         }
2625
2626         return $diff;
2627 }
2628
2629 # parameters can be strings, or references to arrays of strings
2630 sub from_ids_eq {
2631         my ($a, $b) = @_;
2632
2633         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2634                 for (my $i = 0; $i < @$a; ++$i) {
2635                         return 0 unless ($a->[$i] eq $b->[$i]);
2636                 }
2637                 return 1;
2638         } elsif (!ref($a) && !ref($b)) {
2639                 return $a eq $b;
2640         } else {
2641                 return 0;
2642         }
2643 }
2644
2645 sub is_deleted {
2646         my $diffinfo = shift;
2647
2648         return $diffinfo->{'to_id'} eq ('0' x 40);
2649 }
2650
2651 sub git_difftree_body {
2652         my ($difftree, $hash, @parents) = @_;
2653         my ($parent) = $parents[0];
2654         my ($have_blame) = gitweb_check_feature('blame');
2655         print "<div class=\"list_head\">\n";
2656         if ($#{$difftree} > 10) {
2657                 print(($#{$difftree} + 1) . " files changed:\n");
2658         }
2659         print "</div>\n";
2660
2661         print "<table class=\"" .
2662               (@parents > 1 ? "combined " : "") .
2663               "diff_tree\">\n";
2664
2665         # header only for combined diff in 'commitdiff' view
2666         my $has_header = @parents > 1 && $action eq 'commitdiff';
2667         if ($has_header) {
2668                 # table header
2669                 print "<thead><tr>\n" .
2670                        "<th></th><th></th>\n"; # filename, patchN link
2671                 for (my $i = 0; $i < @parents; $i++) {
2672                         my $par = $parents[$i];
2673                         print "<th>" .
2674                               $cgi->a({-href => href(action=>"commitdiff",
2675                                                      hash=>$hash, hash_parent=>$par),
2676                                        -title => 'commitdiff to parent number ' .
2677                                                   ($i+1) . ': ' . substr($par,0,7)},
2678                                       $i+1) .
2679                               "&nbsp;</th>\n";
2680                 }
2681                 print "</tr></thead>\n<tbody>\n";
2682         }
2683
2684         my $alternate = 1;
2685         my $patchno = 0;
2686         foreach my $line (@{$difftree}) {
2687                 my $diff;
2688                 if (ref($line) eq "HASH") {
2689                         # pre-parsed (or generated by hand)
2690                         $diff = $line;
2691                 } else {
2692                         $diff = parse_difftree_raw_line($line);
2693                 }
2694
2695                 if ($alternate) {
2696                         print "<tr class=\"dark\">\n";
2697                 } else {
2698                         print "<tr class=\"light\">\n";
2699                 }
2700                 $alternate ^= 1;
2701
2702                 if (exists $diff->{'nparents'}) { # combined diff
2703
2704                         fill_from_file_info($diff, @parents)
2705                                 unless exists $diff->{'from_file'};
2706
2707                         if (!is_deleted($diff)) {
2708                                 # file exists in the result (child) commit
2709                                 print "<td>" .
2710                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2711                                                              file_name=>$diff->{'to_file'},
2712                                                              hash_base=>$hash),
2713                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2714                                       "</td>\n";
2715                         } else {
2716                                 print "<td>" .
2717                                       esc_path($diff->{'to_file'}) .
2718                                       "</td>\n";
2719                         }
2720
2721                         if ($action eq 'commitdiff') {
2722                                 # link to patch
2723                                 $patchno++;
2724                                 print "<td class=\"link\">" .
2725                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2726                                       " | " .
2727                                       "</td>\n";
2728                         }
2729
2730                         my $has_history = 0;
2731                         my $not_deleted = 0;
2732                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2733                                 my $hash_parent = $parents[$i];
2734                                 my $from_hash = $diff->{'from_id'}[$i];
2735                                 my $from_path = $diff->{'from_file'}[$i];
2736                                 my $status = $diff->{'status'}[$i];
2737
2738                                 $has_history ||= ($status ne 'A');
2739                                 $not_deleted ||= ($status ne 'D');
2740
2741                                 if ($status eq 'A') {
2742                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2743                                 } elsif ($status eq 'D') {
2744                                         print "<td class=\"link\">" .
2745                                               $cgi->a({-href => href(action=>"blob",
2746                                                                      hash_base=>$hash,
2747                                                                      hash=>$from_hash,
2748                                                                      file_name=>$from_path)},
2749                                                       "blob" . ($i+1)) .
2750                                               " | </td>\n";
2751                                 } else {
2752                                         if ($diff->{'to_id'} eq $from_hash) {
2753                                                 print "<td class=\"link nochange\">";
2754                                         } else {
2755                                                 print "<td class=\"link\">";
2756                                         }
2757                                         print $cgi->a({-href => href(action=>"blobdiff",
2758                                                                      hash=>$diff->{'to_id'},
2759                                                                      hash_parent=>$from_hash,
2760                                                                      hash_base=>$hash,
2761                                                                      hash_parent_base=>$hash_parent,
2762                                                                      file_name=>$diff->{'to_file'},
2763                                                                      file_parent=>$from_path)},
2764                                                       "diff" . ($i+1)) .
2765                                               " | </td>\n";
2766                                 }
2767                         }
2768
2769                         print "<td class=\"link\">";
2770                         if ($not_deleted) {
2771                                 print $cgi->a({-href => href(action=>"blob",
2772                                                              hash=>$diff->{'to_id'},
2773                                                              file_name=>$diff->{'to_file'},
2774                                                              hash_base=>$hash)},
2775                                               "blob");
2776                                 print " | " if ($has_history);
2777                         }
2778                         if ($has_history) {
2779                                 print $cgi->a({-href => href(action=>"history",
2780                                                              file_name=>$diff->{'to_file'},
2781                                                              hash_base=>$hash)},
2782                                               "history");
2783                         }
2784                         print "</td>\n";
2785
2786                         print "</tr>\n";
2787                         next; # instead of 'else' clause, to avoid extra indent
2788                 }
2789                 # else ordinary diff
2790
2791                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2792                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2793                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2794                         $to_mode_oct = oct $diff->{'to_mode'};
2795                         if (S_ISREG($to_mode_oct)) { # only for regular file
2796                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2797                         }
2798                         $to_file_type = file_type($diff->{'to_mode'});
2799                 }
2800                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2801                         $from_mode_oct = oct $diff->{'from_mode'};
2802                         if (S_ISREG($to_mode_oct)) { # only for regular file
2803                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2804                         }
2805                         $from_file_type = file_type($diff->{'from_mode'});
2806                 }
2807
2808                 if ($diff->{'status'} eq "A") { # created
2809                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2810                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2811                         $mode_chng   .= "]</span>";
2812                         print "<td>";
2813                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2814                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2815                                       -class => "list"}, esc_path($diff->{'file'}));
2816                         print "</td>\n";
2817                         print "<td>$mode_chng</td>\n";
2818                         print "<td class=\"link\">";
2819                         if ($action eq 'commitdiff') {
2820                                 # link to patch
2821                                 $patchno++;
2822                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2823                                 print " | ";
2824                         }
2825                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2826                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2827                                       "blob");
2828                         print "</td>\n";
2829
2830                 } elsif ($diff->{'status'} eq "D") { # deleted
2831                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2832                         print "<td>";
2833                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2834                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2835                                        -class => "list"}, esc_path($diff->{'file'}));
2836                         print "</td>\n";
2837                         print "<td>$mode_chng</td>\n";
2838                         print "<td class=\"link\">";
2839                         if ($action eq 'commitdiff') {
2840                                 # link to patch
2841                                 $patchno++;
2842                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2843                                 print " | ";
2844                         }
2845                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2846                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2847                                       "blob") . " | ";
2848                         if ($have_blame) {
2849                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2850                                                              file_name=>$diff->{'file'})},
2851                                               "blame") . " | ";
2852                         }
2853                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2854                                                      file_name=>$diff->{'file'})},
2855                                       "history");
2856                         print "</td>\n";
2857
2858                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2859                         my $mode_chnge = "";
2860                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2861                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2862                                 if ($from_file_type ne $to_file_type) {
2863                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2864                                 }
2865                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2866                                         if ($from_mode_str && $to_mode_str) {
2867                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2868                                         } elsif ($to_mode_str) {
2869                                                 $mode_chnge .= " mode: $to_mode_str";
2870                                         }
2871                                 }
2872                                 $mode_chnge .= "]</span>\n";
2873                         }
2874                         print "<td>";
2875                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2876                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2877                                       -class => "list"}, esc_path($diff->{'file'}));
2878                         print "</td>\n";
2879                         print "<td>$mode_chnge</td>\n";
2880                         print "<td class=\"link\">";
2881                         if ($action eq 'commitdiff') {
2882                                 # link to patch
2883                                 $patchno++;
2884                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2885                                       " | ";
2886                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2887                                 # "commit" view and modified file (not onlu mode changed)
2888                                 print $cgi->a({-href => href(action=>"blobdiff",
2889                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2890                                                              hash_base=>$hash, hash_parent_base=>$parent,
2891                                                              file_name=>$diff->{'file'})},
2892                                               "diff") .
2893                                       " | ";
2894                         }
2895                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2896                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2897                                        "blob") . " | ";
2898                         if ($have_blame) {
2899                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2900                                                              file_name=>$diff->{'file'})},
2901                                               "blame") . " | ";
2902                         }
2903                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2904                                                      file_name=>$diff->{'file'})},
2905                                       "history");
2906                         print "</td>\n";
2907
2908                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2909                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2910                         my $nstatus = $status_name{$diff->{'status'}};
2911                         my $mode_chng = "";
2912                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2913                                 # mode also for directories, so we cannot use $to_mode_str
2914                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2915                         }
2916                         print "<td>" .
2917                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2918                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2919                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2920                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2921                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2922                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2923                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2924                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2925                               "<td class=\"link\">";
2926                         if ($action eq 'commitdiff') {
2927                                 # link to patch
2928                                 $patchno++;
2929                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2930                                       " | ";
2931                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2932                                 # "commit" view and modified file (not only pure rename or copy)
2933                                 print $cgi->a({-href => href(action=>"blobdiff",
2934                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2935                                                              hash_base=>$hash, hash_parent_base=>$parent,
2936                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2937                                               "diff") .
2938                                       " | ";
2939                         }
2940                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2941                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2942                                       "blob") . " | ";
2943                         if ($have_blame) {
2944                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2945                                                              file_name=>$diff->{'to_file'})},
2946                                               "blame") . " | ";
2947                         }
2948                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2949                                                     file_name=>$diff->{'to_file'})},
2950                                       "history");
2951                         print "</td>\n";
2952
2953                 } # we should not encounter Unmerged (U) or Unknown (X) status
2954                 print "</tr>\n";
2955         }
2956         print "</tbody>" if $has_header;
2957         print "</table>\n";
2958 }
2959
2960 sub git_patchset_body {
2961         my ($fd, $difftree, $hash, @hash_parents) = @_;
2962         my ($hash_parent) = $hash_parents[0];
2963
2964         my $patch_idx = 0;
2965         my $patch_number = 0;
2966         my $patch_line;
2967         my $diffinfo;
2968         my (%from, %to);
2969
2970         print "<div class=\"patchset\">\n";
2971
2972         # skip to first patch
2973         while ($patch_line = <$fd>) {
2974                 chomp $patch_line;
2975
2976                 last if ($patch_line =~ m/^diff /);
2977         }
2978
2979  PATCH:
2980         while ($patch_line) {
2981                 my @diff_header;
2982                 my ($from_id, $to_id);
2983
2984                 # git diff header
2985                 #assert($patch_line =~ m/^diff /) if DEBUG;
2986                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2987                 $patch_number++;
2988                 push @diff_header, $patch_line;
2989
2990                 # extended diff header
2991         EXTENDED_HEADER:
2992                 while ($patch_line = <$fd>) {
2993                         chomp $patch_line;
2994
2995                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2996
2997                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2998                                 $from_id = $1;
2999                                 $to_id   = $2;
3000                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3001                                 $from_id = [ split(',', $1) ];
3002                                 $to_id   = $2;
3003                         }
3004
3005                         push @diff_header, $patch_line;
3006                 }
3007                 my $last_patch_line = $patch_line;
3008
3009                 # check if current patch belong to current raw line
3010                 # and parse raw git-diff line if needed
3011                 if (defined $diffinfo &&
3012                     defined $from_id && defined $to_id &&
3013                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3014                     $diffinfo->{'to_id'} eq $to_id) {
3015                         # this is continuation of a split patch
3016                         print "<div class=\"patch cont\">\n";
3017                 } else {
3018                         # advance raw git-diff output if needed
3019                         $patch_idx++ if defined $diffinfo;
3020
3021                         # compact combined diff output can have some patches skipped
3022                         # find which patch (using pathname of result) we are at now
3023                         my $to_name;
3024                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3025                                 $to_name = $1;
3026                         }
3027
3028                         do {
3029                                 # read and prepare patch information
3030                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3031                                         # pre-parsed (or generated by hand)
3032                                         $diffinfo = $difftree->[$patch_idx];
3033                                 } else {
3034                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3035                                 }
3036
3037                                 # check if current raw line has no patch (it got simplified)
3038                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3039                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3040                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3041                                               "</div>\n";  # class="patch"
3042
3043                                         $patch_idx++;
3044                                         $patch_number++;
3045                                 }
3046                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3047                                  $patch_idx > $#$difftree);
3048                         # modifies %from, %to hashes
3049                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3050                         if ($diffinfo->{'nparents'}) {
3051                                 # combined diff
3052                                 $from{'file'} = [];
3053                                 $from{'href'} = [];
3054                                 fill_from_file_info($diffinfo, @hash_parents)
3055                                         unless exists $diffinfo->{'from_file'};
3056                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3057                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3058                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3059                                                 $from{'href'}[$i] = href(action=>"blob",
3060                                                                          hash_base=>$hash_parents[$i],
3061                                                                          hash=>$diffinfo->{'from_id'}[$i],
3062                                                                          file_name=>$from{'file'}[$i]);
3063                                         } else {
3064                                                 $from{'href'}[$i] = undef;
3065                                         }
3066                                 }
3067                         } else {
3068                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3069                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3070                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3071                                                              hash=>$diffinfo->{'from_id'},
3072                                                              file_name=>$from{'file'});
3073                                 } else {
3074                                         delete $from{'href'};
3075                                 }
3076                         }
3077
3078                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3079                         if (!is_deleted($diffinfo)) { # file exists in result
3080                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3081                                                    hash=>$diffinfo->{'to_id'},
3082                                                    file_name=>$to{'file'});
3083                         } else {
3084                                 delete $to{'href'};
3085                         }
3086                         # this is first patch for raw difftree line with $patch_idx index
3087                         # we index @$difftree array from 0, but number patches from 1
3088                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3089                 }
3090
3091                 # print "git diff" header
3092                 $patch_line = shift @diff_header;
3093                 print format_git_diff_header_line($patch_line, $diffinfo,
3094                                                   \%from, \%to);
3095
3096                 # print extended diff header
3097                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3098         EXTENDED_HEADER:
3099                 foreach $patch_line (@diff_header) {
3100                         print format_extended_diff_header_line($patch_line, $diffinfo,
3101                                                                \%from, \%to);
3102                 }
3103                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3104
3105                 # from-file/to-file diff header
3106                 $patch_line = $last_patch_line;
3107                 if (! $patch_line) {
3108                         print "</div>\n"; # class="patch"
3109                         last PATCH;
3110                 }
3111                 next PATCH if ($patch_line =~ m/^diff /);
3112                 #assert($patch_line =~ m/^---/) if DEBUG;
3113                 #assert($patch_line eq $last_patch_line) if DEBUG;
3114
3115                 $patch_line = <$fd>;
3116                 chomp $patch_line;
3117                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3118
3119                 print format_diff_from_to_header($last_patch_line, $patch_line,
3120                                                  $diffinfo, \%from, \%to,
3121                                                  @hash_parents);
3122
3123                 # the patch itself
3124         LINE:
3125                 while ($patch_line = <$fd>) {
3126                         chomp $patch_line;
3127
3128                         next PATCH if ($patch_line =~ m/^diff /);
3129
3130                         print format_diff_line($patch_line, \%from, \%to);
3131                 }
3132
3133         } continue {
3134                 print "</div>\n"; # class="patch"
3135         }
3136
3137         # for compact combined (--cc) format, with chunk and patch simpliciaction
3138         # patchset might be empty, but there might be unprocessed raw lines
3139         for ($patch_idx++ if $patch_number > 0;
3140              $patch_idx < @$difftree;
3141              $patch_idx++) {
3142                 # read and prepare patch information
3143                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3144                         # pre-parsed (or generated by hand)
3145                         $diffinfo = $difftree->[$patch_idx];
3146                 } else {
3147                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3148                 }
3149
3150                 # generate anchor for "patch" links in difftree / whatchanged part
3151                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3152                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3153                       "</div>\n";  # class="patch"
3154
3155                 $patch_number++;
3156         }
3157
3158         if ($patch_number == 0) {
3159                 if (@hash_parents > 1) {
3160                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3161                 } else {
3162                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3163                 }
3164         }
3165
3166         print "</div>\n"; # class="patchset"
3167 }
3168
3169 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3170
3171 sub git_project_list_body {
3172         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3173
3174         my ($check_forks) = gitweb_check_feature('forks');
3175
3176         my @projects;
3177         foreach my $pr (@$projlist) {
3178                 my (@aa) = git_get_last_activity($pr->{'path'});
3179                 unless (@aa) {
3180                         next;
3181                 }
3182                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3183                 if (!defined $pr->{'descr'}) {
3184                         my $descr = git_get_project_description($pr->{'path'}) || "";
3185                         $pr->{'descr_long'} = to_utf8($descr);
3186                         $pr->{'descr'} = chop_str($descr, 25, 5);
3187                 }
3188                 if (!defined $pr->{'owner'}) {
3189                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3190                 }
3191                 if ($check_forks) {
3192                         my $pname = $pr->{'path'};
3193                         if (($pname =~ s/\.git$//) &&
3194                             ($pname !~ /\/$/) &&
3195                             (-d "$projectroot/$pname")) {
3196                                 $pr->{'forks'} = "-d $projectroot/$pname";
3197                         }
3198                         else {
3199                                 $pr->{'forks'} = 0;
3200                         }
3201                 }
3202                 push @projects, $pr;
3203         }
3204
3205         $order ||= $default_projects_order;
3206         $from = 0 unless defined $from;
3207         $to = $#projects if (!defined $to || $#projects < $to);
3208
3209         print "<table class=\"project_list\">\n";
3210         unless ($no_header) {
3211                 print "<tr>\n";
3212                 if ($check_forks) {
3213                         print "<th></th>\n";
3214                 }
3215                 if ($order eq "project") {
3216                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3217                         print "<th>Project</th>\n";
3218                 } else {
3219                         print "<th>" .
3220                               $cgi->a({-href => href(project=>undef, order=>'project'),
3221                                        -class => "header"}, "Project") .
3222                               "</th>\n";
3223                 }
3224                 if ($order eq "descr") {
3225                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3226                         print "<th>Description</th>\n";
3227                 } else {
3228                         print "<th>" .
3229                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3230                                        -class => "header"}, "Description") .
3231                               "</th>\n";
3232                 }
3233                 if ($order eq "owner") {
3234                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3235                         print "<th>Owner</th>\n";
3236                 } else {
3237                         print "<th>" .
3238                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3239                                        -class => "header"}, "Owner") .
3240                               "</th>\n";
3241                 }
3242                 if ($order eq "age") {
3243                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3244                         print "<th>Last Change</th>\n";
3245                 } else {
3246                         print "<th>" .
3247                               $cgi->a({-href => href(project=>undef, order=>'age'),
3248                                        -class => "header"}, "Last Change") .
3249                               "</th>\n";
3250                 }
3251                 print "<th></th>\n" .
3252                       "</tr>\n";
3253         }
3254         my $alternate = 1;
3255         for (my $i = $from; $i <= $to; $i++) {
3256                 my $pr = $projects[$i];
3257                 if ($alternate) {
3258                         print "<tr class=\"dark\">\n";
3259                 } else {
3260                         print "<tr class=\"light\">\n";
3261                 }
3262                 $alternate ^= 1;
3263                 if ($check_forks) {
3264                         print "<td>";
3265                         if ($pr->{'forks'}) {
3266                                 print "<!-- $pr->{'forks'} -->\n";
3267                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3268                         }
3269                         print "</td>\n";
3270                 }
3271                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3272                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3273                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3274                                         -class => "list", -title => $pr->{'descr_long'}},
3275                                         esc_html($pr->{'descr'})) . "</td>\n" .
3276                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3277                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3278                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3279                       "<td class=\"link\">" .
3280                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3281                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3282                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3283                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3284                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3285                       "</td>\n" .
3286                       "</tr>\n";
3287         }
3288         if (defined $extra) {
3289                 print "<tr>\n";
3290                 if ($check_forks) {
3291                         print "<td></td>\n";
3292                 }
3293                 print "<td colspan=\"5\">$extra</td>\n" .
3294                       "</tr>\n";
3295         }
3296         print "</table>\n";
3297 }
3298
3299 sub git_shortlog_body {
3300         # uses global variable $project
3301         my ($commitlist, $from, $to, $refs, $extra) = @_;
3302
3303         my $have_snapshot = gitweb_have_snapshot();
3304
3305         $from = 0 unless defined $from;
3306         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3307
3308         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3309         my $alternate = 1;
3310         for (my $i = $from; $i <= $to; $i++) {
3311                 my %co = %{$commitlist->[$i]};
3312                 my $commit = $co{'id'};
3313                 my $ref = format_ref_marker($refs, $commit);
3314                 if ($alternate) {
3315                         print "<tr class=\"dark\">\n";
3316                 } else {
3317                         print "<tr class=\"light\">\n";
3318                 }
3319                 $alternate ^= 1;
3320                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3321                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3322                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3323                       "<td>";
3324                 print format_subject_html($co{'title'}, $co{'title_short'},
3325                                           href(action=>"commit", hash=>$commit), $ref);
3326                 print "</td>\n" .
3327                       "<td class=\"link\">" .
3328                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3329                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3330                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3331                 if ($have_snapshot) {
3332                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3333                 }
3334                 print "</td>\n" .
3335                       "</tr>\n";
3336         }
3337         if (defined $extra) {
3338                 print "<tr>\n" .
3339                       "<td colspan=\"4\">$extra</td>\n" .
3340                       "</tr>\n";
3341         }
3342         print "</table>\n";
3343 }
3344
3345 sub git_history_body {
3346         # Warning: assumes constant type (blob or tree) during history
3347         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3348
3349         $from = 0 unless defined $from;
3350         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3351
3352         print "<table class=\"history\" cellspacing=\"0\">\n";
3353         my $alternate = 1;
3354         for (my $i = $from; $i <= $to; $i++) {
3355                 my %co = %{$commitlist->[$i]};
3356                 if (!%co) {
3357                         next;
3358                 }
3359                 my $commit = $co{'id'};
3360
3361                 my $ref = format_ref_marker($refs, $commit);
3362
3363                 if ($alternate) {
3364                         print "<tr class=\"dark\">\n";
3365                 } else {
3366                         print "<tr class=\"light\">\n";
3367                 }
3368                 $alternate ^= 1;
3369                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3370                       # shortlog uses      chop_str($co{'author_name'}, 10)
3371                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3372                       "<td>";
3373                 # originally git_history used chop_str($co{'title'}, 50)
3374                 print format_subject_html($co{'title'}, $co{'title_short'},
3375                                           href(action=>"commit", hash=>$commit), $ref);
3376                 print "</td>\n" .
3377                       "<td class=\"link\">" .
3378                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3379                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3380
3381                 if ($ftype eq 'blob') {
3382                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3383                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3384                         if (defined $blob_current && defined $blob_parent &&
3385                                         $blob_current ne $blob_parent) {
3386                                 print " | " .
3387                                         $cgi->a({-href => href(action=>"blobdiff",
3388                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3389                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3390                                                                file_name=>$file_name)},
3391                                                 "diff to current");
3392                         }
3393                 }
3394                 print "</td>\n" .
3395                       "</tr>\n";
3396         }
3397         if (defined $extra) {
3398                 print "<tr>\n" .
3399                       "<td colspan=\"4\">$extra</td>\n" .
3400                       "</tr>\n";
3401         }
3402         print "</table>\n";
3403 }
3404
3405 sub git_tags_body {
3406         # uses global variable $project
3407         my ($taglist, $from, $to, $extra) = @_;
3408         $from = 0 unless defined $from;
3409         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3410
3411         print "<table class=\"tags\" cellspacing=\"0\">\n";
3412         my $alternate = 1;
3413         for (my $i = $from; $i <= $to; $i++) {
3414                 my $entry = $taglist->[$i];
3415                 my %tag = %$entry;
3416                 my $comment = $tag{'subject'};
3417                 my $comment_short;
3418                 if (defined $comment) {
3419                         $comment_short = chop_str($comment, 30, 5);
3420                 }
3421                 if ($alternate) {
3422                         print "<tr class=\"dark\">\n";
3423                 } else {
3424                         print "<tr class=\"light\">\n";
3425                 }
3426                 $alternate ^= 1;
3427                 if (defined $tag{'age'}) {
3428                         print "<td><i>$tag{'age'}</i></td>\n";
3429                 } else {
3430                         print "<td></td>\n";
3431                 }
3432                 print "<td>" .
3433                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3434                                -class => "list name"}, esc_html($tag{'name'})) .
3435                       "</td>\n" .
3436                       "<td>";
3437                 if (defined $comment) {
3438                         print format_subject_html($comment, $comment_short,
3439                                                   href(action=>"tag", hash=>$tag{'id'}));
3440                 }
3441                 print "</td>\n" .
3442                       "<td class=\"selflink\">";
3443                 if ($tag{'type'} eq "tag") {
3444                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3445                 } else {
3446                         print "&nbsp;";
3447                 }
3448                 print "</td>\n" .
3449                       "<td class=\"link\">" . " | " .
3450                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3451                 if ($tag{'reftype'} eq "commit") {
3452                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3453                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3454                 } elsif ($tag{'reftype'} eq "blob") {
3455                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3456                 }
3457                 print "</td>\n" .
3458                       "</tr>";
3459         }
3460         if (defined $extra) {
3461                 print "<tr>\n" .
3462                       "<td colspan=\"5\">$extra</td>\n" .
3463                       "</tr>\n";
3464         }
3465         print "</table>\n";
3466 }
3467
3468 sub git_heads_body {
3469         # uses global variable $project
3470         my ($headlist, $head, $from, $to, $extra) = @_;
3471         $from = 0 unless defined $from;
3472         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3473
3474         print "<table class=\"heads\" cellspacing=\"0\">\n";
3475         my $alternate = 1;
3476         for (my $i = $from; $i <= $to; $i++) {
3477                 my $entry = $headlist->[$i];
3478                 my %ref = %$entry;
3479                 my $curr = $ref{'id'} eq $head;
3480                 if ($alternate) {
3481                         print "<tr class=\"dark\">\n";
3482                 } else {
3483                         print "<tr class=\"light\">\n";
3484                 }
3485                 $alternate ^= 1;
3486                 print "<td><i>$ref{'age'}</i></td>\n" .
3487                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3488                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3489                                -class => "list name"},esc_html($ref{'name'})) .
3490                       "</td>\n" .
3491                       "<td class=\"link\">" .
3492                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3493                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3494                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3495                       "</td>\n" .
3496                       "</tr>";
3497         }
3498         if (defined $extra) {
3499                 print "<tr>\n" .
3500                       "<td colspan=\"3\">$extra</td>\n" .
3501                       "</tr>\n";
3502         }
3503         print "</table>\n";
3504 }
3505
3506 sub git_search_grep_body {
3507         my ($commitlist, $from, $to, $extra) = @_;
3508         $from = 0 unless defined $from;
3509         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3510
3511         print "<table class=\"grep\" cellspacing=\"0\">\n";
3512         my $alternate = 1;
3513         for (my $i = $from; $i <= $to; $i++) {
3514                 my %co = %{$commitlist->[$i]};
3515                 if (!%co) {
3516                         next;
3517                 }
3518                 my $commit = $co{'id'};
3519                 if ($alternate) {
3520                         print "<tr class=\"dark\">\n";
3521                 } else {
3522                         print "<tr class=\"light\">\n";
3523                 }
3524                 $alternate ^= 1;
3525                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3526                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3527                       "<td>" .
3528                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3529                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3530                 my $comment = $co{'comment'};
3531                 foreach my $line (@$comment) {
3532                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3533                                 my $lead = esc_html($1) || "";
3534                                 $lead = chop_str($lead, 30, 10);
3535                                 my $match = esc_html($2) || "";
3536                                 my $trail = esc_html($3) || "";
3537                                 $trail = chop_str($trail, 30, 10);
3538                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3539                                 print chop_str($text, 80, 5) . "<br/>\n";
3540                         }
3541                 }
3542                 print "</td>\n" .
3543                       "<td class=\"link\">" .
3544                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3545                       " | " .
3546                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3547                 print "</td>\n" .
3548                       "</tr>\n";
3549         }
3550         if (defined $extra) {
3551                 print "<tr>\n" .
3552                       "<td colspan=\"3\">$extra</td>\n" .
3553                       "</tr>\n";
3554         }
3555         print "</table>\n";
3556 }
3557
3558 ## ======================================================================
3559 ## ======================================================================
3560 ## actions
3561
3562 sub git_project_list {
3563         my $order = $cgi->param('o');
3564         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3565                 die_error(undef, "Unknown order parameter");
3566         }
3567
3568         my @list = git_get_projects_list();
3569         if (!@list) {
3570                 die_error(undef, "No projects found");
3571         }
3572
3573         git_header_html();
3574         if (-f $home_text) {
3575                 print "<div class=\"index_include\">\n";
3576                 open (my $fd, $home_text);
3577                 print <$fd>;
3578                 close $fd;
3579                 print "</div>\n";
3580         }
3581         git_project_list_body(\@list, $order);
3582         git_footer_html();
3583 }
3584
3585 sub git_forks {
3586         my $order = $cgi->param('o');
3587         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3588                 die_error(undef, "Unknown order parameter");
3589         }
3590
3591         my @list = git_get_projects_list($project);
3592         if (!@list) {
3593                 die_error(undef, "No forks found");
3594         }
3595
3596         git_header_html();
3597         git_print_page_nav('','');
3598         git_print_header_div('summary', "$project forks");
3599         git_project_list_body(\@list, $order);
3600         git_footer_html();
3601 }
3602
3603 sub git_project_index {
3604         my @projects = git_get_projects_list($project);
3605
3606         print $cgi->header(
3607                 -type => 'text/plain',
3608                 -charset => 'utf-8',
3609                 -content_disposition => 'inline; filename="index.aux"');
3610
3611         foreach my $pr (@projects) {
3612                 if (!exists $pr->{'owner'}) {
3613                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3614                 }
3615
3616                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3617                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3618                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3619                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3620                 $path  =~ s/ /\+/g;
3621                 $owner =~ s/ /\+/g;
3622
3623                 print "$path $owner\n";
3624         }
3625 }
3626
3627 sub git_summary {
3628         my $descr = git_get_project_description($project) || "none";
3629         my %co = parse_commit("HEAD");
3630         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3631         my $head = $co{'id'};
3632
3633         my $owner = git_get_project_owner($project);
3634
3635         my $refs = git_get_references();
3636         # These get_*_list functions return one more to allow us to see if
3637         # there are more ...
3638         my @taglist  = git_get_tags_list(16);
3639         my @headlist = git_get_heads_list(16);
3640         my @forklist;
3641         my ($check_forks) = gitweb_check_feature('forks');
3642
3643         if ($check_forks) {
3644                 @forklist = git_get_projects_list($project);
3645         }
3646
3647         git_header_html();
3648         git_print_page_nav('summary','', $head);
3649
3650         print "<div class=\"title\">&nbsp;</div>\n";
3651         print "<table cellspacing=\"0\">\n" .
3652               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3653               "<tr><td>owner</td><td>$owner</td></tr>\n";
3654         if (defined $cd{'rfc2822'}) {
3655                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3656         }
3657
3658         # use per project git URL list in $projectroot/$project/cloneurl
3659         # or make project git URL from git base URL and project name
3660         my $url_tag = "URL";
3661         my @url_list = git_get_project_url_list($project);
3662         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3663         foreach my $git_url (@url_list) {
3664                 next unless $git_url;
3665                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3666                 $url_tag = "";
3667         }
3668         print "</table>\n";
3669
3670         if (-s "$projectroot/$project/README.html") {
3671                 if (open my $fd, "$projectroot/$project/README.html") {
3672                         print "<div class=\"title\">readme</div>\n";
3673                         print $_ while (<$fd>);
3674                         close $fd;
3675                 }
3676         }
3677
3678         # we need to request one more than 16 (0..15) to check if
3679         # those 16 are all
3680         my @commitlist = $head ? parse_commits($head, 17) : ();
3681         if (@commitlist) {
3682                 git_print_header_div('shortlog');
3683                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3684                                   $#commitlist <=  15 ? undef :
3685                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3686         }
3687
3688         if (@taglist) {
3689                 git_print_header_div('tags');
3690                 git_tags_body(\@taglist, 0, 15,
3691                               $#taglist <=  15 ? undef :
3692                               $cgi->a({-href => href(action=>"tags")}, "..."));
3693         }
3694
3695         if (@headlist) {
3696                 git_print_header_div('heads');
3697                 git_heads_body(\@headlist, $head, 0, 15,
3698                                $#headlist <= 15 ? undef :
3699                                $cgi->a({-href => href(action=>"heads")}, "..."));
3700         }
3701
3702         if (@forklist) {
3703                 git_print_header_div('forks');
3704                 git_project_list_body(\@forklist, undef, 0, 15,
3705                                       $#forklist <= 15 ? undef :
3706                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3707                                       'noheader');
3708         }
3709
3710         git_footer_html();
3711 }
3712
3713 sub git_tag {
3714         my $head = git_get_head_hash($project);
3715         git_header_html();
3716         git_print_page_nav('','', $head,undef,$head);
3717         my %tag = parse_tag($hash);
3718
3719         if (! %tag) {
3720                 die_error(undef, "Unknown tag object");
3721         }
3722
3723         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3724         print "<div class=\"title_text\">\n" .
3725               "<table cellspacing=\"0\">\n" .
3726               "<tr>\n" .
3727               "<td>object</td>\n" .
3728               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3729                                $tag{'object'}) . "</td>\n" .
3730               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3731                                               $tag{'type'}) . "</td>\n" .
3732               "</tr>\n";
3733         if (defined($tag{'author'})) {
3734                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3735                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3736                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3737                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3738                         "</td></tr>\n";
3739         }
3740         print "</table>\n\n" .
3741               "</div>\n";
3742         print "<div class=\"page_body\">";
3743         my $comment = $tag{'comment'};
3744         foreach my $line (@$comment) {
3745                 chomp $line;
3746                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3747         }
3748         print "</div>\n";
3749         git_footer_html();
3750 }
3751
3752 sub git_blame2 {
3753         my $fd;
3754         my $ftype;
3755
3756         my ($have_blame) = gitweb_check_feature('blame');
3757         if (!$have_blame) {
3758                 die_error('403 Permission denied', "Permission denied");
3759         }
3760         die_error('404 Not Found', "File name not defined") if (!$file_name);
3761         $hash_base ||= git_get_head_hash($project);
3762         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3763         my %co = parse_commit($hash_base)
3764                 or die_error(undef, "Reading commit failed");
3765         if (!defined $hash) {
3766                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3767                         or die_error(undef, "Error looking up file");
3768         }
3769         $ftype = git_get_type($hash);
3770         if ($ftype !~ "blob") {
3771                 die_error('400 Bad Request', "Object is not a blob");
3772         }
3773         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3774               $file_name, $hash_base)
3775                 or die_error(undef, "Open git-blame failed");
3776         git_header_html();
3777         my $formats_nav =
3778                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3779                         "blob") .
3780                 " | " .
3781                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3782                         "history") .
3783                 " | " .
3784                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3785                         "HEAD");
3786         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3787         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3788         git_print_page_path($file_name, $ftype, $hash_base);
3789         my @rev_color = (qw(light2 dark2));
3790         my $num_colors = scalar(@rev_color);
3791         my $current_color = 0;
3792         my $last_rev;
3793         print <<HTML;
3794 <div class="page_body">
3795 <table class="blame">
3796 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3797 HTML
3798         my %metainfo = ();
3799         while (1) {
3800                 $_ = <$fd>;
3801                 last unless defined $_;
3802                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3803                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3804                 if (!exists $metainfo{$full_rev}) {
3805                         $metainfo{$full_rev} = {};
3806                 }
3807                 my $meta = $metainfo{$full_rev};
3808                 while (<$fd>) {
3809                         last if (s/^\t//);
3810                         if (/^(\S+) (.*)$/) {
3811                                 $meta->{$1} = $2;
3812                         }
3813                 }
3814                 my $data = $_;
3815                 chomp $data;
3816                 my $rev = substr($full_rev, 0, 8);
3817                 my $author = $meta->{'author'};
3818                 my %date = parse_date($meta->{'author-time'},
3819                                       $meta->{'author-tz'});
3820                 my $date = $date{'iso-tz'};
3821                 if ($group_size) {
3822                         $current_color = ++$current_color % $num_colors;
3823                 }
3824                 print "<tr class=\"$rev_color[$current_color]\">\n";
3825                 if ($group_size) {
3826                         print "<td class=\"sha1\"";
3827                         print " title=\"". esc_html($author) . ", $date\"";
3828                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3829                         print ">";
3830                         print $cgi->a({-href => href(action=>"commit",
3831                                                      hash=>$full_rev,
3832                                                      file_name=>$file_name)},
3833                                       esc_html($rev));
3834                         print "</td>\n";
3835                 }
3836                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3837                         or die_error(undef, "Open git-rev-parse failed");
3838                 my $parent_commit = <$dd>;
3839                 close $dd;
3840                 chomp($parent_commit);
3841                 my $blamed = href(action => 'blame',
3842                                   file_name => $meta->{'filename'},
3843                                   hash_base => $parent_commit);
3844                 print "<td class=\"linenr\">";
3845                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3846                                 -id => "l$lineno",
3847                                 -class => "linenr" },
3848                               esc_html($lineno));
3849                 print "</td>";
3850                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3851                 print "</tr>\n";
3852         }
3853         print "</table>\n";
3854         print "</div>";
3855         close $fd
3856                 or print "Reading blob failed\n";
3857         git_footer_html();
3858 }
3859
3860 sub git_blame {
3861         my $fd;
3862
3863         my ($have_blame) = gitweb_check_feature('blame');
3864         if (!$have_blame) {
3865                 die_error('403 Permission denied', "Permission denied");
3866         }
3867         die_error('404 Not Found', "File name not defined") if (!$file_name);
3868         $hash_base ||= git_get_head_hash($project);
3869         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3870         my %co = parse_commit($hash_base)
3871                 or die_error(undef, "Reading commit failed");
3872         if (!defined $hash) {
3873                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3874                         or die_error(undef, "Error lookup file");
3875         }
3876         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3877                 or die_error(undef, "Open git-annotate failed");
3878         git_header_html();
3879         my $formats_nav =
3880                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3881                         "blob") .
3882                 " | " .
3883                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3884                         "history") .
3885                 " | " .
3886                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3887                         "HEAD");
3888         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3889         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3890         git_print_page_path($file_name, 'blob', $hash_base);
3891         print "<div class=\"page_body\">\n";
3892         print <<HTML;
3893 <table class="blame">
3894   <tr>
3895     <th>Commit</th>
3896     <th>Age</th>
3897     <th>Author</th>
3898     <th>Line</th>
3899     <th>Data</th>
3900   </tr>
3901 HTML
3902         my @line_class = (qw(light dark));
3903         my $line_class_len = scalar (@line_class);
3904         my $line_class_num = $#line_class;
3905         while (my $line = <$fd>) {
3906                 my $long_rev;
3907                 my $short_rev;
3908                 my $author;
3909                 my $time;
3910                 my $lineno;
3911                 my $data;
3912                 my $age;
3913                 my $age_str;
3914                 my $age_class;
3915
3916                 chomp $line;
3917                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3918
3919                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3920                         $long_rev = $1;
3921                         $author   = $2;
3922                         $time     = $3;
3923                         $lineno   = $4;
3924                         $data     = $5;
3925                 } else {
3926                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3927                         next;
3928                 }
3929                 $short_rev  = substr ($long_rev, 0, 8);
3930                 $age        = time () - $time;
3931                 $age_str    = age_string ($age);
3932                 $age_str    =~ s/ /&nbsp;/g;
3933                 $age_class  = age_class($age);
3934                 $author     = esc_html ($author);
3935                 $author     =~ s/ /&nbsp;/g;
3936
3937                 $data = untabify($data);
3938                 $data = esc_html ($data);
3939
3940                 print <<HTML;
3941   <tr class="$line_class[$line_class_num]">
3942     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3943     <td class="$age_class">$age_str</td>
3944     <td>$author</td>
3945     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3946     <td class="pre">$data</td>
3947   </tr>
3948 HTML
3949         } # while (my $line = <$fd>)
3950         print "</table>\n\n";
3951         close $fd
3952                 or print "Reading blob failed.\n";
3953         print "</div>";
3954         git_footer_html();
3955 }
3956
3957 sub git_tags {
3958         my $head = git_get_head_hash($project);
3959         git_header_html();
3960         git_print_page_nav('','', $head,undef,$head);
3961         git_print_header_div('summary', $project);
3962
3963         my @tagslist = git_get_tags_list();
3964         if (@tagslist) {
3965                 git_tags_body(\@tagslist);
3966         }
3967         git_footer_html();
3968 }
3969
3970 sub git_heads {
3971         my $head = git_get_head_hash($project);
3972         git_header_html();
3973         git_print_page_nav('','', $head,undef,$head);
3974         git_print_header_div('summary', $project);
3975
3976         my @headslist = git_get_heads_list();
3977         if (@headslist) {
3978                 git_heads_body(\@headslist, $head);
3979         }
3980         git_footer_html();
3981 }
3982
3983 sub git_blob_plain {
3984         my $expires;
3985
3986         if (!defined $hash) {
3987                 if (defined $file_name) {
3988                         my $base = $hash_base || git_get_head_hash($project);
3989                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3990                                 or die_error(undef, "Error lookup file");
3991                 } else {
3992                         die_error(undef, "No file name defined");
3993                 }
3994         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3995                 # blobs defined by non-textual hash id's can be cached
3996                 $expires = "+1d";
3997         }
3998
3999         my $type = shift;
4000         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4001                 or die_error(undef, "Couldn't cat $file_name, $hash");
4002
4003         $type ||= blob_mimetype($fd, $file_name);
4004
4005         # save as filename, even when no $file_name is given
4006         my $save_as = "$hash";
4007         if (defined $file_name) {
4008                 $save_as = $file_name;
4009         } elsif ($type =~ m/^text\//) {
4010                 $save_as .= '.txt';
4011         }
4012
4013         print $cgi->header(
4014                 -type => "$type",
4015                 -expires=>$expires,
4016                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4017         undef $/;
4018         binmode STDOUT, ':raw';
4019         print <$fd>;
4020         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4021         $/ = "\n";
4022         close $fd;
4023 }
4024
4025 sub git_blob {
4026         my $expires;
4027
4028         if (!defined $hash) {
4029                 if (defined $file_name) {
4030                         my $base = $hash_base || git_get_head_hash($project);
4031                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4032                                 or die_error(undef, "Error lookup file");
4033                 } else {
4034                         die_error(undef, "No file name defined");
4035                 }
4036         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4037                 # blobs defined by non-textual hash id's can be cached
4038                 $expires = "+1d";
4039         }
4040
4041         my ($have_blame) = gitweb_check_feature('blame');
4042         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4043                 or die_error(undef, "Couldn't cat $file_name, $hash");
4044         my $mimetype = blob_mimetype($fd, $file_name);
4045         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4046                 close $fd;
4047                 return git_blob_plain($mimetype);
4048         }
4049         # we can have blame only for text/* mimetype
4050         $have_blame &&= ($mimetype =~ m!^text/!);
4051
4052         git_header_html(undef, $expires);
4053         my $formats_nav = '';
4054         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4055                 if (defined $file_name) {
4056                         if ($have_blame) {
4057                                 $formats_nav .=
4058                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4059                                                                hash=>$hash, file_name=>$file_name)},
4060                                                 "blame") .
4061                                         " | ";
4062                         }
4063                         $formats_nav .=
4064                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4065                                                        hash=>$hash, file_name=>$file_name)},
4066                                         "history") .
4067                                 " | " .
4068                                 $cgi->a({-href => href(action=>"blob_plain",
4069                                                        hash=>$hash, file_name=>$file_name)},
4070                                         "raw") .
4071                                 " | " .
4072                                 $cgi->a({-href => href(action=>"blob",
4073                                                        hash_base=>"HEAD", file_name=>$file_name)},
4074                                         "HEAD");
4075                 } else {
4076                         $formats_nav .=
4077                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4078                 }
4079                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4080                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4081         } else {
4082                 print "<div class=\"page_nav\">\n" .
4083                       "<br/><br/></div>\n" .
4084                       "<div class=\"title\">$hash</div>\n";
4085         }
4086         git_print_page_path($file_name, "blob", $hash_base);
4087         print "<div class=\"page_body\">\n";
4088         if ($mimetype =~ m!^text/!) {
4089                 my $nr;
4090                 while (my $line = <$fd>) {
4091                         chomp $line;
4092                         $nr++;
4093                         $line = untabify($line);
4094                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4095                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4096                 }
4097         } elsif ($mimetype =~ m!^image/!) {
4098                 print qq!<img type="$mimetype"!;
4099                 if ($file_name) {
4100                         print qq! alt="$file_name" title="$file_name"!;
4101                 }
4102                 print qq! src="! .
4103                       href(action=>"blob_plain", hash=>$hash,
4104                            hash_base=>$hash_base, file_name=>$file_name) .
4105                       qq!" />\n!;
4106         }
4107         close $fd
4108                 or print "Reading blob failed.\n";
4109         print "</div>";
4110         git_footer_html();
4111 }
4112
4113 sub git_tree {
4114         my $have_snapshot = gitweb_have_snapshot();
4115
4116         if (!defined $hash_base) {
4117                 $hash_base = "HEAD";
4118         }
4119         if (!defined $hash) {
4120                 if (defined $file_name) {
4121                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4122                 } else {
4123                         $hash = $hash_base;
4124                 }
4125         }
4126         $/ = "\0";
4127         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4128                 or die_error(undef, "Open git-ls-tree failed");
4129         my @entries = map { chomp; $_ } <$fd>;
4130         close $fd or die_error(undef, "Reading tree failed");
4131         $/ = "\n";
4132
4133         my $refs = git_get_references();
4134         my $ref = format_ref_marker($refs, $hash_base);
4135         git_header_html();
4136         my $basedir = '';
4137         my ($have_blame) = gitweb_check_feature('blame');
4138         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4139                 my @views_nav = ();
4140                 if (defined $file_name) {
4141                         push @views_nav,
4142                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4143                                                        hash=>$hash, file_name=>$file_name)},
4144                                         "history"),
4145                                 $cgi->a({-href => href(action=>"tree",
4146                                                        hash_base=>"HEAD", file_name=>$file_name)},
4147                                         "HEAD"),
4148                 }
4149                 if ($have_snapshot) {
4150                         # FIXME: Should be available when we have no hash base as well.
4151                         push @views_nav,
4152                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4153                                         "snapshot");
4154                 }
4155                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4156                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4157         } else {
4158                 undef $hash_base;
4159                 print "<div class=\"page_nav\">\n";
4160                 print "<br/><br/></div>\n";
4161                 print "<div class=\"title\">$hash</div>\n";
4162         }
4163         if (defined $file_name) {
4164                 $basedir = $file_name;
4165                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4166                         $basedir .= '/';
4167                 }
4168         }
4169         git_print_page_path($file_name, 'tree', $hash_base);
4170         print "<div class=\"page_body\">\n";
4171         print "<table cellspacing=\"0\">\n";
4172         my $alternate = 1;
4173         # '..' (top directory) link if possible
4174         if (defined $hash_base &&
4175             defined $file_name && $file_name =~ m![^/]+$!) {
4176                 if ($alternate) {
4177                         print "<tr class=\"dark\">\n";
4178                 } else {
4179                         print "<tr class=\"light\">\n";
4180                 }
4181                 $alternate ^= 1;
4182
4183                 my $up = $file_name;
4184                 $up =~ s!/?[^/]+$!!;
4185                 undef $up unless $up;
4186                 # based on git_print_tree_entry
4187                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4188                 print '<td class="list">';
4189                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4190                                              file_name=>$up)},
4191                               "..");
4192                 print "</td>\n";
4193                 print "<td class=\"link\"></td>\n";
4194
4195                 print "</tr>\n";
4196         }
4197         foreach my $line (@entries) {
4198                 my %t = parse_ls_tree_line($line, -z => 1);
4199
4200                 if ($alternate) {
4201                         print "<tr class=\"dark\">\n";
4202                 } else {
4203                         print "<tr class=\"light\">\n";
4204                 }
4205                 $alternate ^= 1;
4206
4207                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4208
4209                 print "</tr>\n";
4210         }
4211         print "</table>\n" .
4212               "</div>";
4213         git_footer_html();
4214 }
4215
4216 sub git_snapshot {
4217         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4218         my $have_snapshot = (defined $ctype && defined $suffix);
4219         if (!$have_snapshot) {
4220                 die_error('403 Permission denied', "Permission denied");
4221         }
4222
4223         if (!defined $hash) {
4224                 $hash = git_get_head_hash($project);
4225         }
4226
4227         my $git = git_cmd_str();
4228         my $name = $project;
4229         $name =~ s,([^/])/*\.git$,$1,;
4230         $name = basename($name);
4231         my $filename = to_utf8($name);
4232         $name =~ s/\047/\047\\\047\047/g;
4233         my $cmd;
4234         if ($suffix eq 'zip') {
4235                 $filename .= "-$hash.$suffix";
4236                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4237         } else {
4238                 $filename .= "-$hash.tar.$suffix";
4239                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4240         }
4241
4242         print $cgi->header(
4243                 -type => "application/$ctype",
4244                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4245                 -status => '200 OK');
4246
4247         open my $fd, "-|", $cmd
4248                 or die_error(undef, "Execute git-archive failed");
4249         binmode STDOUT, ':raw';
4250         print <$fd>;
4251         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4252         close $fd;
4253
4254 }
4255
4256 sub git_log {
4257         my $head = git_get_head_hash($project);
4258         if (!defined $hash) {
4259                 $hash = $head;
4260         }
4261         if (!defined $page) {
4262                 $page = 0;
4263         }
4264         my $refs = git_get_references();
4265
4266         my @commitlist = parse_commits($hash, 101, (100 * $page));
4267
4268         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4269
4270         git_header_html();
4271         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4272
4273         if (!@commitlist) {
4274                 my %co = parse_commit($hash);
4275
4276                 git_print_header_div('summary', $project);
4277                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4278         }
4279         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4280         for (my $i = 0; $i <= $to; $i++) {
4281                 my %co = %{$commitlist[$i]};
4282                 next if !%co;
4283                 my $commit = $co{'id'};
4284                 my $ref = format_ref_marker($refs, $commit);
4285                 my %ad = parse_date($co{'author_epoch'});
4286                 git_print_header_div('commit',
4287                                "<span class=\"age\">$co{'age_string'}</span>" .
4288                                esc_html($co{'title'}) . $ref,
4289                                $commit);
4290                 print "<div class=\"title_text\">\n" .
4291                       "<div class=\"log_link\">\n" .
4292                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4293                       " | " .
4294                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4295                       " | " .
4296                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4297                       "<br/>\n" .
4298                       "</div>\n" .
4299                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4300                       "</div>\n";
4301
4302                 print "<div class=\"log_body\">\n";
4303                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4304                 print "</div>\n";
4305         }
4306         if ($#commitlist >= 100) {
4307                 print "<div class=\"page_nav\">\n";
4308                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4309                                -accesskey => "n", -title => "Alt-n"}, "next");
4310                 print "</div>\n";
4311         }
4312         git_footer_html();
4313 }
4314
4315 sub git_commit {
4316         $hash ||= $hash_base || "HEAD";
4317         my %co = parse_commit($hash);
4318         if (!%co) {
4319                 die_error(undef, "Unknown commit object");
4320         }
4321         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4322         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4323
4324         my $parent  = $co{'parent'};
4325         my $parents = $co{'parents'}; # listref
4326
4327         # we need to prepare $formats_nav before any parameter munging
4328         my $formats_nav;
4329         if (!defined $parent) {
4330                 # --root commitdiff
4331                 $formats_nav .= '(initial)';
4332         } elsif (@$parents == 1) {
4333                 # single parent commit
4334                 $formats_nav .=
4335                         '(parent: ' .
4336                         $cgi->a({-href => href(action=>"commit",
4337                                                hash=>$parent)},
4338                                 esc_html(substr($parent, 0, 7))) .
4339                         ')';
4340         } else {
4341                 # merge commit
4342                 $formats_nav .=
4343                         '(merge: ' .
4344                         join(' ', map {
4345                                 $cgi->a({-href => href(action=>"commit",
4346                                                        hash=>$_)},
4347                                         esc_html(substr($_, 0, 7)));
4348                         } @$parents ) .
4349                         ')';
4350         }
4351
4352         if (!defined $parent) {
4353                 $parent = "--root";
4354         }
4355         my @difftree;
4356         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4357                 @diff_opts,
4358                 (@$parents <= 1 ? $parent : '-c'),
4359                 $hash, "--"
4360                 or die_error(undef, "Open git-diff-tree failed");
4361         @difftree = map { chomp; $_ } <$fd>;
4362         close $fd or die_error(undef, "Reading git-diff-tree failed");
4363
4364         # non-textual hash id's can be cached
4365         my $expires;
4366         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4367                 $expires = "+1d";
4368         }
4369         my $refs = git_get_references();
4370         my $ref = format_ref_marker($refs, $co{'id'});
4371
4372         my $have_snapshot = gitweb_have_snapshot();
4373
4374         git_header_html(undef, $expires);
4375         git_print_page_nav('commit', '',
4376                            $hash, $co{'tree'}, $hash,
4377                            $formats_nav);
4378
4379         if (defined $co{'parent'}) {
4380                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4381         } else {
4382                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4383         }
4384         print "<div class=\"title_text\">\n" .
4385               "<table cellspacing=\"0\">\n";
4386         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4387               "<tr>" .
4388               "<td></td><td> $ad{'rfc2822'}";
4389         if ($ad{'hour_local'} < 6) {
4390                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4391                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4392         } else {
4393                 printf(" (%02d:%02d %s)",
4394                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4395         }
4396         print "</td>" .
4397               "</tr>\n";
4398         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4399         print "<tr><td></td><td> $cd{'rfc2822'}" .
4400               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4401               "</td></tr>\n";
4402         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4403         print "<tr>" .
4404               "<td>tree</td>" .
4405               "<td class=\"sha1\">" .
4406               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4407                        class => "list"}, $co{'tree'}) .
4408               "</td>" .
4409               "<td class=\"link\">" .
4410               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4411                       "tree");
4412         if ($have_snapshot) {
4413                 print " | " .
4414                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4415         }
4416         print "</td>" .
4417               "</tr>\n";
4418
4419         foreach my $par (@$parents) {
4420                 print "<tr>" .
4421                       "<td>parent</td>" .
4422                       "<td class=\"sha1\">" .
4423                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4424                                class => "list"}, $par) .
4425                       "</td>" .
4426                       "<td class=\"link\">" .
4427                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4428                       " | " .
4429                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4430                       "</td>" .
4431                       "</tr>\n";
4432         }
4433         print "</table>".
4434               "</div>\n";
4435
4436         print "<div class=\"page_body\">\n";
4437         git_print_log($co{'comment'});
4438         print "</div>\n";
4439
4440         git_difftree_body(\@difftree, $hash, @$parents);
4441
4442         git_footer_html();
4443 }
4444
4445 sub git_object {
4446         # object is defined by:
4447         # - hash or hash_base alone
4448         # - hash_base and file_name
4449         my $type;
4450
4451         # - hash or hash_base alone
4452         if ($hash || ($hash_base && !defined $file_name)) {
4453                 my $object_id = $hash || $hash_base;
4454
4455                 my $git_command = git_cmd_str();
4456                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4457                         or die_error('404 Not Found', "Object does not exist");
4458                 $type = <$fd>;
4459                 chomp $type;
4460                 close $fd
4461                         or die_error('404 Not Found', "Object does not exist");
4462
4463         # - hash_base and file_name
4464         } elsif ($hash_base && defined $file_name) {
4465                 $file_name =~ s,/+$,,;
4466
4467                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4468                         or die_error('404 Not Found', "Base object does not exist");
4469
4470                 # here errors should not hapen
4471                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4472                         or die_error(undef, "Open git-ls-tree failed");
4473                 my $line = <$fd>;
4474                 close $fd;
4475
4476                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4477                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4478                         die_error('404 Not Found', "File or directory for given base does not exist");
4479                 }
4480                 $type = $2;
4481                 $hash = $3;
4482         } else {
4483                 die_error('404 Not Found', "Not enough information to find object");
4484         }
4485
4486         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4487                                           hash=>$hash, hash_base=>$hash_base,
4488                                           file_name=>$file_name),
4489                              -status => '302 Found');
4490 }
4491
4492 sub git_blobdiff {
4493         my $format = shift || 'html';
4494
4495         my $fd;
4496         my @difftree;
4497         my %diffinfo;
4498         my $expires;
4499
4500         # preparing $fd and %diffinfo for git_patchset_body
4501         # new style URI
4502         if (defined $hash_base && defined $hash_parent_base) {
4503                 if (defined $file_name) {
4504                         # read raw output
4505                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4506                                 $hash_parent_base, $hash_base,
4507                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4508                                 or die_error(undef, "Open git-diff-tree failed");
4509                         @difftree = map { chomp; $_ } <$fd>;
4510                         close $fd
4511                                 or die_error(undef, "Reading git-diff-tree failed");
4512                         @difftree
4513                                 or die_error('404 Not Found', "Blob diff not found");
4514
4515                 } elsif (defined $hash &&
4516                          $hash =~ /[0-9a-fA-F]{40}/) {
4517                         # try to find filename from $hash
4518
4519                         # read filtered raw output
4520                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4521                                 $hash_parent_base, $hash_base, "--"
4522                                 or die_error(undef, "Open git-diff-tree failed");
4523                         @difftree =
4524                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4525                                 # $hash == to_id
4526                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4527                                 map { chomp; $_ } <$fd>;
4528                         close $fd
4529                                 or die_error(undef, "Reading git-diff-tree failed");
4530                         @difftree
4531                                 or die_error('404 Not Found', "Blob diff not found");
4532
4533                 } else {
4534                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4535                 }
4536
4537                 if (@difftree > 1) {
4538                         die_error('404 Not Found', "Ambiguous blob diff specification");
4539                 }
4540
4541                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4542                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4543                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4544
4545                 $hash_parent ||= $diffinfo{'from_id'};
4546                 $hash        ||= $diffinfo{'to_id'};
4547
4548                 # non-textual hash id's can be cached
4549                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4550                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4551                         $expires = '+1d';
4552                 }
4553
4554                 # open patch output
4555                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4556                         '-p', ($format eq 'html' ? "--full-index" : ()),
4557                         $hash_parent_base, $hash_base,
4558                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4559                         or die_error(undef, "Open git-diff-tree failed");
4560         }
4561
4562         # old/legacy style URI
4563         if (!%diffinfo && # if new style URI failed
4564             defined $hash && defined $hash_parent) {
4565                 # fake git-diff-tree raw output
4566                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4567                 $diffinfo{'from_id'} = $hash_parent;
4568                 $diffinfo{'to_id'}   = $hash;
4569                 if (defined $file_name) {
4570                         if (defined $file_parent) {
4571                                 $diffinfo{'status'} = '2';
4572                                 $diffinfo{'from_file'} = $file_parent;
4573                                 $diffinfo{'to_file'}   = $file_name;
4574                         } else { # assume not renamed
4575                                 $diffinfo{'status'} = '1';
4576                                 $diffinfo{'from_file'} = $file_name;
4577                                 $diffinfo{'to_file'}   = $file_name;
4578                         }
4579                 } else { # no filename given
4580                         $diffinfo{'status'} = '2';
4581                         $diffinfo{'from_file'} = $hash_parent;
4582                         $diffinfo{'to_file'}   = $hash;
4583                 }
4584
4585                 # non-textual hash id's can be cached
4586                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4587                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4588                         $expires = '+1d';
4589                 }
4590
4591                 # open patch output
4592                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4593                         '-p', ($format eq 'html' ? "--full-index" : ()),
4594                         $hash_parent, $hash, "--"
4595                         or die_error(undef, "Open git-diff failed");
4596         } else  {
4597                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4598                         unless %diffinfo;
4599         }
4600
4601         # header
4602         if ($format eq 'html') {
4603                 my $formats_nav =
4604                         $cgi->a({-href => href(action=>"blobdiff_plain",
4605                                                hash=>$hash, hash_parent=>$hash_parent,
4606                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4607                                                file_name=>$file_name, file_parent=>$file_parent)},
4608                                 "raw");
4609                 git_header_html(undef, $expires);
4610                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4611                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4612                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4613                 } else {
4614                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4615                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4616                 }
4617                 if (defined $file_name) {
4618                         git_print_page_path($file_name, "blob", $hash_base);
4619                 } else {
4620                         print "<div class=\"page_path\"></div>\n";
4621                 }
4622
4623         } elsif ($format eq 'plain') {
4624                 print $cgi->header(
4625                         -type => 'text/plain',
4626                         -charset => 'utf-8',
4627                         -expires => $expires,
4628                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4629
4630                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4631
4632         } else {
4633                 die_error(undef, "Unknown blobdiff format");
4634         }
4635
4636         # patch
4637         if ($format eq 'html') {
4638                 print "<div class=\"page_body\">\n";
4639
4640                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4641                 close $fd;
4642
4643                 print "</div>\n"; # class="page_body"
4644                 git_footer_html();
4645
4646         } else {
4647                 while (my $line = <$fd>) {
4648                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4649                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4650
4651                         print $line;
4652
4653                         last if $line =~ m!^\+\+\+!;
4654                 }
4655                 local $/ = undef;
4656                 print <$fd>;
4657                 close $fd;
4658         }
4659 }
4660
4661 sub git_blobdiff_plain {
4662         git_blobdiff('plain');
4663 }
4664
4665 sub git_commitdiff {
4666         my $format = shift || 'html';
4667         $hash ||= $hash_base || "HEAD";
4668         my %co = parse_commit($hash);
4669         if (!%co) {
4670                 die_error(undef, "Unknown commit object");
4671         }
4672
4673         # choose format for commitdiff for merge
4674         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4675                 $hash_parent = '--cc';
4676         }
4677         # we need to prepare $formats_nav before almost any parameter munging
4678         my $formats_nav;
4679         if ($format eq 'html') {
4680                 $formats_nav =
4681                         $cgi->a({-href => href(action=>"commitdiff_plain",
4682                                                hash=>$hash, hash_parent=>$hash_parent)},
4683                                 "raw");
4684
4685                 if (defined $hash_parent &&
4686                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4687                         # commitdiff with two commits given
4688                         my $hash_parent_short = $hash_parent;
4689                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4690                                 $hash_parent_short = substr($hash_parent, 0, 7);
4691                         }
4692                         $formats_nav .=
4693                                 ' (from';
4694                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4695                                 if ($co{'parents'}[$i] eq $hash_parent) {
4696                                         $formats_nav .= ' parent ' . ($i+1);
4697                                         last;
4698                                 }
4699                         }
4700                         $formats_nav .= ': ' .
4701                                 $cgi->a({-href => href(action=>"commitdiff",
4702                                                        hash=>$hash_parent)},
4703                                         esc_html($hash_parent_short)) .
4704                                 ')';
4705                 } elsif (!$co{'parent'}) {
4706                         # --root commitdiff
4707                         $formats_nav .= ' (initial)';
4708                 } elsif (scalar @{$co{'parents'}} == 1) {
4709                         # single parent commit
4710                         $formats_nav .=
4711                                 ' (parent: ' .
4712                                 $cgi->a({-href => href(action=>"commitdiff",
4713                                                        hash=>$co{'parent'})},
4714                                         esc_html(substr($co{'parent'}, 0, 7))) .
4715                                 ')';
4716                 } else {
4717                         # merge commit
4718                         if ($hash_parent eq '--cc') {
4719                                 $formats_nav .= ' | ' .
4720                                         $cgi->a({-href => href(action=>"commitdiff",
4721                                                                hash=>$hash, hash_parent=>'-c')},
4722                                                 'combined');
4723                         } else { # $hash_parent eq '-c'
4724                                 $formats_nav .= ' | ' .
4725                                         $cgi->a({-href => href(action=>"commitdiff",
4726                                                                hash=>$hash, hash_parent=>'--cc')},
4727                                                 'compact');
4728                         }
4729                         $formats_nav .=
4730                                 ' (merge: ' .
4731                                 join(' ', map {
4732                                         $cgi->a({-href => href(action=>"commitdiff",
4733                                                                hash=>$_)},
4734                                                 esc_html(substr($_, 0, 7)));
4735                                 } @{$co{'parents'}} ) .
4736                                 ')';
4737                 }
4738         }
4739
4740         my $hash_parent_param = $hash_parent;
4741         if (!defined $hash_parent_param) {
4742                 # --cc for multiple parents, --root for parentless
4743                 $hash_parent_param =
4744                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4745         }
4746
4747         # read commitdiff
4748         my $fd;
4749         my @difftree;
4750         if ($format eq 'html') {
4751                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4752                         "--no-commit-id", "--patch-with-raw", "--full-index",
4753                         $hash_parent_param, $hash, "--"
4754                         or die_error(undef, "Open git-diff-tree failed");
4755
4756                 while (my $line = <$fd>) {
4757                         chomp $line;
4758                         # empty line ends raw part of diff-tree output
4759                         last unless $line;
4760                         push @difftree, scalar parse_difftree_raw_line($line);
4761                 }
4762
4763         } elsif ($format eq 'plain') {
4764                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4765                         '-p', $hash_parent_param, $hash, "--"
4766                         or die_error(undef, "Open git-diff-tree failed");
4767
4768         } else {
4769                 die_error(undef, "Unknown commitdiff format");
4770         }
4771
4772         # non-textual hash id's can be cached
4773         my $expires;
4774         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4775                 $expires = "+1d";
4776         }
4777
4778         # write commit message
4779         if ($format eq 'html') {
4780                 my $refs = git_get_references();
4781                 my $ref = format_ref_marker($refs, $co{'id'});
4782
4783                 git_header_html(undef, $expires);
4784                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4785                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4786                 git_print_authorship(\%co);
4787                 print "<div class=\"page_body\">\n";
4788                 if (@{$co{'comment'}} > 1) {
4789                         print "<div class=\"log\">\n";
4790                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4791                         print "</div>\n"; # class="log"
4792                 }
4793
4794         } elsif ($format eq 'plain') {
4795                 my $refs = git_get_references("tags");
4796                 my $tagname = git_get_rev_name_tags($hash);
4797                 my $filename = basename($project) . "-$hash.patch";
4798
4799                 print $cgi->header(
4800                         -type => 'text/plain',
4801                         -charset => 'utf-8',
4802                         -expires => $expires,
4803                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4804                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4805                 print <<TEXT;
4806 From: $co{'author'}
4807 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4808 Subject: $co{'title'}
4809 TEXT
4810                 print "X-Git-Tag: $tagname\n" if $tagname;
4811                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4812
4813                 foreach my $line (@{$co{'comment'}}) {
4814                         print "$line\n";
4815                 }
4816                 print "---\n\n";
4817         }
4818
4819         # write patch
4820         if ($format eq 'html') {
4821                 my $use_parents = !defined $hash_parent ||
4822                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4823                 git_difftree_body(\@difftree, $hash,
4824                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4825                 print "<br/>\n";
4826
4827                 git_patchset_body($fd, \@difftree, $hash,
4828                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4829                 close $fd;
4830                 print "</div>\n"; # class="page_body"
4831                 git_footer_html();
4832
4833         } elsif ($format eq 'plain') {
4834                 local $/ = undef;
4835                 print <$fd>;
4836                 close $fd
4837                         or print "Reading git-diff-tree failed\n";
4838         }
4839 }
4840
4841 sub git_commitdiff_plain {
4842         git_commitdiff('plain');
4843 }
4844
4845 sub git_history {
4846         if (!defined $hash_base) {
4847                 $hash_base = git_get_head_hash($project);
4848         }
4849         if (!defined $page) {
4850                 $page = 0;
4851         }
4852         my $ftype;
4853         my %co = parse_commit($hash_base);
4854         if (!%co) {
4855                 die_error(undef, "Unknown commit object");
4856         }
4857
4858         my $refs = git_get_references();
4859         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4860
4861         if (!defined $hash && defined $file_name) {
4862                 $hash = git_get_hash_by_path($hash_base, $file_name);
4863         }
4864         if (defined $hash) {
4865                 $ftype = git_get_type($hash);
4866         }
4867
4868         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4869
4870         my $paging_nav = '';
4871         if ($page > 0) {
4872                 $paging_nav .=
4873                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4874                                                file_name=>$file_name)},
4875                                 "first");
4876                 $paging_nav .= " &sdot; " .
4877                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4878                                                file_name=>$file_name, page=>$page-1),
4879                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4880         } else {
4881                 $paging_nav .= "first";
4882                 $paging_nav .= " &sdot; prev";
4883         }
4884         if ($#commitlist >= 100) {
4885                 $paging_nav .= " &sdot; " .
4886                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4887                                                file_name=>$file_name, page=>$page+1),
4888                                  -accesskey => "n", -title => "Alt-n"}, "next");
4889         } else {
4890                 $paging_nav .= " &sdot; next";
4891         }
4892         my $next_link = '';
4893         if ($#commitlist >= 100) {
4894                 $next_link =
4895                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4896                                                file_name=>$file_name, page=>$page+1),
4897                                  -accesskey => "n", -title => "Alt-n"}, "next");
4898         }
4899
4900         git_header_html();
4901         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4902         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4903         git_print_page_path($file_name, $ftype, $hash_base);
4904
4905         git_history_body(\@commitlist, 0, 99,
4906                          $refs, $hash_base, $ftype, $next_link);
4907
4908         git_footer_html();
4909 }
4910
4911 sub git_search {
4912         my ($have_search) = gitweb_check_feature('search');
4913         if (!$have_search) {
4914                 die_error('403 Permission denied', "Permission denied");
4915         }
4916         if (!defined $searchtext) {
4917                 die_error(undef, "Text field empty");
4918         }
4919         if (!defined $hash) {
4920                 $hash = git_get_head_hash($project);
4921         }
4922         my %co = parse_commit($hash);
4923         if (!%co) {
4924                 die_error(undef, "Unknown commit object");
4925         }
4926         if (!defined $page) {
4927                 $page = 0;
4928         }
4929
4930         $searchtype ||= 'commit';
4931         if ($searchtype eq 'pickaxe') {
4932                 # pickaxe may take all resources of your box and run for several minutes
4933                 # with every query - so decide by yourself how public you make this feature
4934                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4935                 if (!$have_pickaxe) {
4936                         die_error('403 Permission denied', "Permission denied");
4937                 }
4938         }
4939         if ($searchtype eq 'grep') {
4940                 my ($have_grep) = gitweb_check_feature('grep');
4941                 if (!$have_grep) {
4942                         die_error('403 Permission denied', "Permission denied");
4943                 }
4944         }
4945
4946         git_header_html();
4947
4948         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4949                 my $greptype;
4950                 if ($searchtype eq 'commit') {
4951                         $greptype = "--grep=";
4952                 } elsif ($searchtype eq 'author') {
4953                         $greptype = "--author=";
4954                 } elsif ($searchtype eq 'committer') {
4955                         $greptype = "--committer=";
4956                 }
4957                 $greptype .= $search_regexp;
4958                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4959
4960                 my $paging_nav = '';
4961                 if ($page > 0) {
4962                         $paging_nav .=
4963                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4964                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4965                                         "first");
4966                         $paging_nav .= " &sdot; " .
4967                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4968                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4969                                                        page=>$page-1),
4970                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4971                 } else {
4972                         $paging_nav .= "first";
4973                         $paging_nav .= " &sdot; prev";
4974                 }
4975                 if ($#commitlist >= 100) {
4976                         $paging_nav .= " &sdot; " .
4977                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4978                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4979                                                        page=>$page+1),
4980                                          -accesskey => "n", -title => "Alt-n"}, "next");
4981                 } else {
4982                         $paging_nav .= " &sdot; next";
4983                 }
4984                 my $next_link = '';
4985                 if ($#commitlist >= 100) {
4986                         $next_link =
4987                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4988                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4989                                                        page=>$page+1),
4990                                          -accesskey => "n", -title => "Alt-n"}, "next");
4991                 }
4992
4993                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4994                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4995                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4996         }
4997
4998         if ($searchtype eq 'pickaxe') {
4999                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5000                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5001
5002                 print "<table cellspacing=\"0\">\n";
5003                 my $alternate = 1;
5004                 $/ = "\n";
5005                 my $git_command = git_cmd_str();
5006                 my $searchqtext = $searchtext;
5007                 $searchqtext =~ s/'/'\\''/;
5008                 open my $fd, "-|", "$git_command rev-list $hash | " .
5009                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5010                 undef %co;
5011                 my @files;
5012                 while (my $line = <$fd>) {
5013                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5014                                 my %set;
5015                                 $set{'file'} = $6;
5016                                 $set{'from_id'} = $3;
5017                                 $set{'to_id'} = $4;
5018                                 $set{'id'} = $set{'to_id'};
5019                                 if ($set{'id'} =~ m/0{40}/) {
5020                                         $set{'id'} = $set{'from_id'};
5021                                 }
5022                                 if ($set{'id'} =~ m/0{40}/) {
5023                                         next;
5024                                 }
5025                                 push @files, \%set;
5026                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5027                                 if (%co) {
5028                                         if ($alternate) {
5029                                                 print "<tr class=\"dark\">\n";
5030                                         } else {
5031                                                 print "<tr class=\"light\">\n";
5032                                         }
5033                                         $alternate ^= 1;
5034                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5035                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5036                                               "<td>" .
5037                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5038                                                       -class => "list subject"},
5039                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5040                                         while (my $setref = shift @files) {
5041                                                 my %set = %$setref;
5042                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5043                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5044                                                               -class => "list"},
5045                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5046                                                       "<br/>\n";
5047                                         }
5048                                         print "</td>\n" .
5049                                               "<td class=\"link\">" .
5050                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5051                                               " | " .
5052                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5053                                         print "</td>\n" .
5054                                               "</tr>\n";
5055                                 }
5056                                 %co = parse_commit($1);
5057                         }
5058                 }
5059                 close $fd;
5060
5061                 print "</table>\n";
5062         }
5063
5064         if ($searchtype eq 'grep') {
5065                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5066                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5067
5068                 print "<table cellspacing=\"0\">\n";
5069                 my $alternate = 1;
5070                 my $matches = 0;
5071                 $/ = "\n";
5072                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5073                 my $lastfile = '';
5074                 while (my $line = <$fd>) {
5075                         chomp $line;
5076                         my ($file, $lno, $ltext, $binary);
5077                         last if ($matches++ > 1000);
5078                         if ($line =~ /^Binary file (.+) matches$/) {
5079                                 $file = $1;
5080                                 $binary = 1;
5081                         } else {
5082                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5083                         }
5084                         if ($file ne $lastfile) {
5085                                 $lastfile and print "</td></tr>\n";
5086                                 if ($alternate++) {
5087                                         print "<tr class=\"dark\">\n";
5088                                 } else {
5089                                         print "<tr class=\"light\">\n";
5090                                 }
5091                                 print "<td class=\"list\">".
5092                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5093                                                                file_name=>"$file"),
5094                                                 -class => "list"}, esc_path($file));
5095                                 print "</td><td>\n";
5096                                 $lastfile = $file;
5097                         }
5098                         if ($binary) {
5099                                 print "<div class=\"binary\">Binary file</div>\n";
5100                         } else {
5101                                 $ltext = untabify($ltext);
5102                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5103                                         $ltext = esc_html($1, -nbsp=>1);
5104                                         $ltext .= '<span class="match">';
5105                                         $ltext .= esc_html($2, -nbsp=>1);
5106                                         $ltext .= '</span>';
5107                                         $ltext .= esc_html($3, -nbsp=>1);
5108                                 } else {
5109                                         $ltext = esc_html($ltext, -nbsp=>1);
5110                                 }
5111                                 print "<div class=\"pre\">" .
5112                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5113                                                                file_name=>"$file").'#l'.$lno,
5114                                                 -class => "linenr"}, sprintf('%4i', $lno))
5115                                         . ' ' .  $ltext . "</div>\n";
5116                         }
5117                 }
5118                 if ($lastfile) {
5119                         print "</td></tr>\n";
5120                         if ($matches > 1000) {
5121                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5122                         }
5123                 } else {
5124                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5125                 }
5126                 close $fd;
5127
5128                 print "</table>\n";
5129         }
5130         git_footer_html();
5131 }
5132
5133 sub git_search_help {
5134         git_header_html();
5135         git_print_page_nav('','', $hash,$hash,$hash);
5136         print <<EOT;
5137 <dl>
5138 <dt><b>commit</b></dt>
5139 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5140 EOT
5141         my ($have_grep) = gitweb_check_feature('grep');
5142         if ($have_grep) {
5143                 print <<EOT;
5144 <dt><b>grep</b></dt>
5145 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5146     a different one) are searched for the given
5147 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5148 (POSIX extended) and the matches are listed. On large
5149 trees, this search can take a while and put some strain on the server, so please use it with
5150 some consideration.</dd>
5151 EOT
5152         }
5153         print <<EOT;
5154 <dt><b>author</b></dt>
5155 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5156 <dt><b>committer</b></dt>
5157 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5158 EOT
5159         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5160         if ($have_pickaxe) {
5161                 print <<EOT;
5162 <dt><b>pickaxe</b></dt>
5163 <dd>All commits that caused the string to appear or disappear from any file (changes that
5164 added, removed or "modified" the string) will be listed. This search can take a while and
5165 takes a lot of strain on the server, so please use it wisely.</dd>
5166 EOT
5167         }
5168         print "</dl>\n";
5169         git_footer_html();
5170 }
5171
5172 sub git_shortlog {
5173         my $head = git_get_head_hash($project);
5174         if (!defined $hash) {
5175                 $hash = $head;
5176         }
5177         if (!defined $page) {
5178                 $page = 0;
5179         }
5180         my $refs = git_get_references();
5181
5182         my @commitlist = parse_commits($hash, 101, (100 * $page));
5183
5184         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5185         my $next_link = '';
5186         if ($#commitlist >= 100) {
5187                 $next_link =
5188                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5189                                  -accesskey => "n", -title => "Alt-n"}, "next");
5190         }
5191
5192         git_header_html();
5193         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5194         git_print_header_div('summary', $project);
5195
5196         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5197
5198         git_footer_html();
5199 }
5200
5201 ## ......................................................................
5202 ## feeds (RSS, Atom; OPML)
5203
5204 sub git_feed {
5205         my $format = shift || 'atom';
5206         my ($have_blame) = gitweb_check_feature('blame');
5207
5208         # Atom: http://www.atomenabled.org/developers/syndication/
5209         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5210         if ($format ne 'rss' && $format ne 'atom') {
5211                 die_error(undef, "Unknown web feed format");
5212         }
5213
5214         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5215         my $head = $hash || 'HEAD';
5216         my @commitlist = parse_commits($head, 150);
5217
5218         my %latest_commit;
5219         my %latest_date;
5220         my $content_type = "application/$format+xml";
5221         if (defined $cgi->http('HTTP_ACCEPT') &&
5222                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5223                 # browser (feed reader) prefers text/xml
5224                 $content_type = 'text/xml';
5225         }
5226         if (defined($commitlist[0])) {
5227                 %latest_commit = %{$commitlist[0]};
5228                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5229                 print $cgi->header(
5230                         -type => $content_type,
5231                         -charset => 'utf-8',
5232                         -last_modified => $latest_date{'rfc2822'});
5233         } else {
5234                 print $cgi->header(
5235                         -type => $content_type,
5236                         -charset => 'utf-8');
5237         }
5238
5239         # Optimization: skip generating the body if client asks only
5240         # for Last-Modified date.
5241         return if ($cgi->request_method() eq 'HEAD');
5242
5243         # header variables
5244         my $title = "$site_name - $project/$action";
5245         my $feed_type = 'log';
5246         if (defined $hash) {
5247                 $title .= " - '$hash'";
5248                 $feed_type = 'branch log';
5249                 if (defined $file_name) {
5250                         $title .= " :: $file_name";
5251                         $feed_type = 'history';
5252                 }
5253         } elsif (defined $file_name) {
5254                 $title .= " - $file_name";
5255                 $feed_type = 'history';
5256         }
5257         $title .= " $feed_type";
5258         my $descr = git_get_project_description($project);
5259         if (defined $descr) {
5260                 $descr = esc_html($descr);
5261         } else {
5262                 $descr = "$project " .
5263                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5264                          " feed";
5265         }
5266         my $owner = git_get_project_owner($project);
5267         $owner = esc_html($owner);
5268
5269         #header
5270         my $alt_url;
5271         if (defined $file_name) {
5272                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5273         } elsif (defined $hash) {
5274                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5275         } else {
5276                 $alt_url = href(-full=>1, action=>"summary");
5277         }
5278         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5279         if ($format eq 'rss') {
5280                 print <<XML;
5281 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5282 <channel>
5283 XML
5284                 print "<title>$title</title>\n" .
5285                       "<link>$alt_url</link>\n" .
5286                       "<description>$descr</description>\n" .
5287                       "<language>en</language>\n";
5288         } elsif ($format eq 'atom') {
5289                 print <<XML;
5290 <feed xmlns="http://www.w3.org/2005/Atom">
5291 XML
5292                 print "<title>$title</title>\n" .
5293                       "<subtitle>$descr</subtitle>\n" .
5294                       '<link rel="alternate" type="text/html" href="' .
5295                       $alt_url . '" />' . "\n" .
5296                       '<link rel="self" type="' . $content_type . '" href="' .
5297                       $cgi->self_url() . '" />' . "\n" .
5298                       "<id>" . href(-full=>1) . "</id>\n" .
5299                       # use project owner for feed author
5300                       "<author><name>$owner</name></author>\n";
5301                 if (defined $favicon) {
5302                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5303                 }
5304                 if (defined $logo_url) {
5305                         # not twice as wide as tall: 72 x 27 pixels
5306                         print "<logo>" . esc_url($logo) . "</logo>\n";
5307                 }
5308                 if (! %latest_date) {
5309                         # dummy date to keep the feed valid until commits trickle in:
5310                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5311                 } else {
5312                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5313                 }
5314         }
5315
5316         # contents
5317         for (my $i = 0; $i <= $#commitlist; $i++) {
5318                 my %co = %{$commitlist[$i]};
5319                 my $commit = $co{'id'};
5320                 # we read 150, we always show 30 and the ones more recent than 48 hours
5321                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5322                         last;
5323                 }
5324                 my %cd = parse_date($co{'author_epoch'});
5325
5326                 # get list of changed files
5327                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5328                         $co{'parent'} || "--root",
5329                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5330                         or next;
5331                 my @difftree = map { chomp; $_ } <$fd>;
5332                 close $fd
5333                         or next;
5334
5335                 # print element (entry, item)
5336                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5337                 if ($format eq 'rss') {
5338                         print "<item>\n" .
5339                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5340                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5341                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5342                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5343                               "<link>$co_url</link>\n" .
5344                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5345                               "<content:encoded>" .
5346                               "<![CDATA[\n";
5347                 } elsif ($format eq 'atom') {
5348                         print "<entry>\n" .
5349                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5350                               "<updated>$cd{'iso-8601'}</updated>\n" .
5351                               "<author>\n" .
5352                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5353                         if ($co{'author_email'}) {
5354                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5355                         }
5356                         print "</author>\n" .
5357                               # use committer for contributor
5358                               "<contributor>\n" .
5359                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5360                         if ($co{'committer_email'}) {
5361                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5362                         }
5363                         print "</contributor>\n" .
5364                               "<published>$cd{'iso-8601'}</published>\n" .
5365                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5366                               "<id>$co_url</id>\n" .
5367                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5368                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5369                 }
5370                 my $comment = $co{'comment'};
5371                 print "<pre>\n";
5372                 foreach my $line (@$comment) {
5373                         $line = esc_html($line);
5374                         print "$line\n";
5375                 }
5376                 print "</pre><ul>\n";
5377                 foreach my $difftree_line (@difftree) {
5378                         my %difftree = parse_difftree_raw_line($difftree_line);
5379                         next if !$difftree{'from_id'};
5380
5381                         my $file = $difftree{'file'} || $difftree{'to_file'};
5382
5383                         print "<li>" .
5384                               "[" .
5385                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5386                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5387                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5388                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5389                                       -title => "diff"}, 'D');
5390                         if ($have_blame) {
5391                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5392                                                              file_name=>$file, hash_base=>$commit),
5393                                               -title => "blame"}, 'B');
5394                         }
5395                         # if this is not a feed of a file history
5396                         if (!defined $file_name || $file_name ne $file) {
5397                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5398                                                              file_name=>$file, hash=>$commit),
5399                                               -title => "history"}, 'H');
5400                         }
5401                         $file = esc_path($file);
5402                         print "] ".
5403                               "$file</li>\n";
5404                 }
5405                 if ($format eq 'rss') {
5406                         print "</ul>]]>\n" .
5407                               "</content:encoded>\n" .
5408                               "</item>\n";
5409                 } elsif ($format eq 'atom') {
5410                         print "</ul>\n</div>\n" .
5411                               "</content>\n" .
5412                               "</entry>\n";
5413                 }
5414         }
5415
5416         # end of feed
5417         if ($format eq 'rss') {
5418                 print "</channel>\n</rss>\n";
5419         }       elsif ($format eq 'atom') {
5420                 print "</feed>\n";
5421         }
5422 }
5423
5424 sub git_rss {
5425         git_feed('rss');
5426 }
5427
5428 sub git_atom {
5429         git_feed('atom');
5430 }
5431
5432 sub git_opml {
5433         my @list = git_get_projects_list();
5434
5435         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5436         print <<XML;
5437 <?xml version="1.0" encoding="utf-8"?>
5438 <opml version="1.0">
5439 <head>
5440   <title>$site_name OPML Export</title>
5441 </head>
5442 <body>
5443 <outline text="git RSS feeds">
5444 XML
5445
5446         foreach my $pr (@list) {
5447                 my %proj = %$pr;
5448                 my $head = git_get_head_hash($proj{'path'});
5449                 if (!defined $head) {
5450                         next;
5451                 }
5452                 $git_dir = "$projectroot/$proj{'path'}";
5453                 my %co = parse_commit($head);
5454                 if (!%co) {
5455                         next;
5456                 }
5457
5458                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5459                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5460                 my $html = "$my_url?p=$proj{'path'};a=summary";
5461                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5462         }
5463         print <<XML;
5464 </outline>
5465 </body>
5466 </opml>
5467 XML
5468 }