gitweb/gitweb.perl

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