gitweb/gitweb.perl

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