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

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