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