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

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