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