git.oblomov.eu Git - git/blob - gitweb/gitweb.perl

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