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