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