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