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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'snapshot'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable the pickaxe search, which will list the commits that modified
 132         # a given string in a file. This can be practical and quite faster
 133         # alternative to 'blame', but still potentially CPU-intensive.
 134
 135         # To enable system wide have in $GITWEB_CONFIG
 136         # $feature{'pickaxe'}{'default'} = [1];
 137         # To have project specific config enable override in $GITWEB_CONFIG
 138         # $feature{'pickaxe'}{'override'} = 1;
 139         # and in project config gitweb.pickaxe = 0|1;
 140         'pickaxe' => {
 141                 'sub' => \&feature_pickaxe,
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Make gitweb use an alternative format of the URLs which can be
 146         # more readable and natural-looking: project name is embedded
 147         # directly in the path and the query string contains other
 148         # auxiliary information. All gitweb installations recognize
 149         # URL in either format; this configures in which formats gitweb
 150         # generates links.
 151
 152         # To enable system wide have in $GITWEB_CONFIG
 153         # $feature{'pathinfo'}{'default'} = [1];
 154         # Project specific override is not supported.
 155
 156         # Note that you will need to change the default location of CSS,
 157         # favicon, logo and possibly other files to an absolute URL. Also,
 158         # if gitweb.cgi serves as your indexfile, you will need to force
 159         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 160         'pathinfo' => {
 161                 'override' => 0,
 162                 'default' => [0]},
 163
 164         # Make gitweb consider projects in project root subdirectories
 165         # to be forks of existing projects. Given project $projname.git,
 166         # projects matching $projname/*.git will not be shown in the main
 167         # projects list, instead a '+' mark will be added to $projname
 168         # there and a 'forks' view will be enabled for the project, listing
 169         # all the forks. This feature is supported only if project list
 170         # is taken from a directory, not file.
 171
 172         # To enable system wide have in $GITWEB_CONFIG
 173         # $feature{'forks'}{'default'} = [1];
 174         # Project specific override is not supported.
 175         'forks' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178 );
 179
 180 sub gitweb_check_feature {
 181         my ($name) = @_;
 182         return unless exists $feature{$name};
 183         my ($sub, $override, @defaults) = (
 184                 $feature{$name}{'sub'},
 185                 $feature{$name}{'override'},
 186                 @{$feature{$name}{'default'}});
 187         if (!$override) { return @defaults; }
 188         if (!defined $sub) {
 189                 warn "feature $name is not overrideable";
 190                 return @defaults;
 191         }
 192         return $sub->(@defaults);
 193 }
 194
 195 sub feature_blame {
 196         my ($val) = git_get_project_config('blame', '--bool');
 197
 198         if ($val eq 'true') {
 199                 return 1;
 200         } elsif ($val eq 'false') {
 201                 return 0;
 202         }
 203
 204         return $_[0];
 205 }
 206
 207 sub feature_snapshot {
 208         my ($ctype, $suffix, $command) = @_;
 209
 210         my ($val) = git_get_project_config('snapshot');
 211
 212         if ($val eq 'gzip') {
 213                 return ('x-gzip', 'gz', 'gzip');
 214         } elsif ($val eq 'bzip2') {
 215                 return ('x-bzip2', 'bz2', 'bzip2');
 216         } elsif ($val eq 'none') {
 217                 return ();
 218         }
 219
 220         return ($ctype, $suffix, $command);
 221 }
 222
 223 sub gitweb_have_snapshot {
 224         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 225         my $have_snapshot = (defined $ctype && defined $suffix);
 226
 227         return $have_snapshot;
 228 }
 229
 230 sub feature_pickaxe {
 231         my ($val) = git_get_project_config('pickaxe', '--bool');
 232
 233         if ($val eq 'true') {
 234                 return (1);
 235         } elsif ($val eq 'false') {
 236                 return (0);
 237         }
 238
 239         return ($_[0]);
 240 }
 241
 242 # checking HEAD file with -e is fragile if the repository was
 243 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 244 # and then pruned.
 245 sub check_head_link {
 246         my ($dir) = @_;
 247         my $headfile = "$dir/HEAD";
 248         return ((-e $headfile) ||
 249                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 250 }
 251
 252 sub check_export_ok {
 253         my ($dir) = @_;
 254         return (check_head_link($dir) &&
 255                 (!$export_ok || -e "$dir/$export_ok"));
 256 }
 257
 258 # rename detection options for git-diff and git-diff-tree
 259 # - default is '-M', with the cost proportional to
 260 #   (number of removed files) * (number of new files).
 261 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 262 #   (number of changed files + number of removed files) * (number of new files)
 263 # - even more costly is '-C', '--find-copies-harder' with cost
 264 #   (number of files in the original tree) * (number of new files)
 265 # - one might want to include '-B' option, e.g. '-B', '-M'
 266 our @diff_opts = ('-M'); # taken from git_commit
 267
 268 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 269 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 270
 271 # version of the core git binary
 272 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 273
 274 $projects_list ||= $projectroot;
 275
 276 # ======================================================================
 277 # input validation and dispatch
 278 our $action = $cgi->param('a');
 279 if (defined $action) {
 280         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 281                 die_error(undef, "Invalid action parameter");
 282         }
 283 }
 284
 285 # parameters which are pathnames
 286 our $project = $cgi->param('p');
 287 if (defined $project) {
 288         if (!validate_pathname($project) ||
 289             !(-d "$projectroot/$project") ||
 290             !check_head_link("$projectroot/$project") ||
 291             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 292             ($strict_export && !project_in_list($project))) {
 293                 undef $project;
 294                 die_error(undef, "No such project");
 295         }
 296 }
 297
 298 our $file_name = $cgi->param('f');
 299 if (defined $file_name) {
 300         if (!validate_pathname($file_name)) {
 301                 die_error(undef, "Invalid file parameter");
 302         }
 303 }
 304
 305 our $file_parent = $cgi->param('fp');
 306 if (defined $file_parent) {
 307         if (!validate_pathname($file_parent)) {
 308                 die_error(undef, "Invalid file parent parameter");
 309         }
 310 }
 311
 312 # parameters which are refnames
 313 our $hash = $cgi->param('h');
 314 if (defined $hash) {
 315         if (!validate_refname($hash)) {
 316                 die_error(undef, "Invalid hash parameter");
 317         }
 318 }
 319
 320 our $hash_parent = $cgi->param('hp');
 321 if (defined $hash_parent) {
 322         if (!validate_refname($hash_parent)) {
 323                 die_error(undef, "Invalid hash parent parameter");
 324         }
 325 }
 326
 327 our $hash_base = $cgi->param('hb');
 328 if (defined $hash_base) {
 329         if (!validate_refname($hash_base)) {
 330                 die_error(undef, "Invalid hash base parameter");
 331         }
 332 }
 333
 334 our $hash_parent_base = $cgi->param('hpb');
 335 if (defined $hash_parent_base) {
 336         if (!validate_refname($hash_parent_base)) {
 337                 die_error(undef, "Invalid hash parent base parameter");
 338         }
 339 }
 340
 341 # other parameters
 342 our $page = $cgi->param('pg');
 343 if (defined $page) {
 344         if ($page =~ m/[^0-9]/) {
 345                 die_error(undef, "Invalid page parameter");
 346         }
 347 }
 348
 349 our $searchtext = $cgi->param('s');
 350 if (defined $searchtext) {
 351         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 352                 die_error(undef, "Invalid search parameter");
 353         }
 354         $searchtext = quotemeta $searchtext;
 355 }
 356
 357 our $searchtype = $cgi->param('st');
 358 if (defined $searchtype) {
 359         if ($searchtype =~ m/[^a-z]/) {
 360                 die_error(undef, "Invalid searchtype parameter");
 361         }
 362 }
 363
 364 # now read PATH_INFO and use it as alternative to parameters
 365 sub evaluate_path_info {
 366         return if defined $project;
 367         my $path_info = $ENV{"PATH_INFO"};
 368         return if !$path_info;
 369         $path_info =~ s,^/+,,;
 370         return if !$path_info;
 371         # find which part of PATH_INFO is project
 372         $project = $path_info;
 373         $project =~ s,/+$,,;
 374         while ($project && !check_head_link("$projectroot/$project")) {
 375                 $project =~ s,/*[^/]*$,,;
 376         }
 377         # validate project
 378         $project = validate_pathname($project);
 379         if (!$project ||
 380             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 381             ($strict_export && !project_in_list($project))) {
 382                 undef $project;
 383                 return;
 384         }
 385         # do not change any parameters if an action is given using the query string
 386         return if $action;
 387         $path_info =~ s,^$project/*,,;
 388         my ($refname, $pathname) = split(/:/, $path_info, 2);
 389         if (defined $pathname) {
 390                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 391                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 392                 $pathname =~ s,^/+,,;
 393                 if (!$pathname || substr($pathname, -1) eq "/") {
 394                         $action  ||= "tree";
 395                         $pathname =~ s,/$,,;
 396                 } else {
 397                         $action  ||= "blob_plain";
 398                 }
 399                 $hash_base ||= validate_refname($refname);
 400                 $file_name ||= validate_pathname($pathname);
 401         } elsif (defined $refname) {
 402                 # we got "project.git/branch"
 403                 $action ||= "shortlog";
 404                 $hash   ||= validate_refname($refname);
 405         }
 406 }
 407 evaluate_path_info();
 408
 409 # path to the current git repository
 410 our $git_dir;
 411 $git_dir = "$projectroot/$project" if $project;
 412
 413 # dispatch
 414 my %actions = (
 415         "blame" => \&git_blame2,
 416         "blobdiff" => \&git_blobdiff,
 417         "blobdiff_plain" => \&git_blobdiff_plain,
 418         "blob" => \&git_blob,
 419         "blob_plain" => \&git_blob_plain,
 420         "commitdiff" => \&git_commitdiff,
 421         "commitdiff_plain" => \&git_commitdiff_plain,
 422         "commit" => \&git_commit,
 423         "forks" => \&git_forks,
 424         "heads" => \&git_heads,
 425         "history" => \&git_history,
 426         "log" => \&git_log,
 427         "rss" => \&git_rss,
 428         "atom" => \&git_atom,
 429         "search" => \&git_search,
 430         "search_help" => \&git_search_help,
 431         "shortlog" => \&git_shortlog,
 432         "summary" => \&git_summary,
 433         "tag" => \&git_tag,
 434         "tags" => \&git_tags,
 435         "tree" => \&git_tree,
 436         "snapshot" => \&git_snapshot,
 437         "object" => \&git_object,
 438         # those below don't need $project
 439         "opml" => \&git_opml,
 440         "project_list" => \&git_project_list,
 441         "project_index" => \&git_project_index,
 442 );
 443
 444 if (defined $project) {
 445         $action ||= 'summary';
 446 } else {
 447         $action ||= 'project_list';
 448 }
 449 if (!defined($actions{$action})) {
 450         die_error(undef, "Unknown action");
 451 }
 452 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 453     !$project) {
 454         die_error(undef, "Project needed");
 455 }
 456 $actions{$action}->();
 457 exit;
 458
 459 ## ======================================================================
 460 ## action links
 461
 462 sub href(%) {
 463         my %params = @_;
 464         # default is to use -absolute url() i.e. $my_uri
 465         my $href = $params{-full} ? $my_url : $my_uri;
 466
 467         # XXX: Warning: If you touch this, check the search form for updating,
 468         # too.
 469
 470         my @mapping = (
 471                 project => "p",
 472                 action => "a",
 473                 file_name => "f",
 474                 file_parent => "fp",
 475                 hash => "h",
 476                 hash_parent => "hp",
 477                 hash_base => "hb",
 478                 hash_parent_base => "hpb",
 479                 page => "pg",
 480                 order => "o",
 481                 searchtext => "s",
 482                 searchtype => "st",
 483         );
 484         my %mapping = @mapping;
 485
 486         $params{'project'} = $project unless exists $params{'project'};
 487
 488         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 489         if ($use_pathinfo) {
 490                 # use PATH_INFO for project name
 491                 $href .= "/$params{'project'}" if defined $params{'project'};
 492                 delete $params{'project'};
 493
 494                 # Summary just uses the project path URL
 495                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 496                         delete $params{'action'};
 497                 }
 498         }
 499
 500         # now encode the parameters explicitly
 501         my @result = ();
 502         for (my $i = 0; $i < @mapping; $i += 2) {
 503                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 504                 if (defined $params{$name}) {
 505                         push @result, $symbol . "=" . esc_param($params{$name});
 506                 }
 507         }
 508         $href .= "?" . join(';', @result) if scalar @result;
 509
 510         return $href;
 511 }
 512
 513
 514 ## ======================================================================
 515 ## validation, quoting/unquoting and escaping
 516
 517 sub validate_pathname {
 518         my $input = shift || return undef;
 519
 520         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 521         # at the beginning, at the end, and between slashes.
 522         # also this catches doubled slashes
 523         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 524                 return undef;
 525         }
 526         # no null characters
 527         if ($input =~ m!\0!) {
 528                 return undef;
 529         }
 530         return $input;
 531 }
 532
 533 sub validate_refname {
 534         my $input = shift || return undef;
 535
 536         # textual hashes are O.K.
 537         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 538                 return $input;
 539         }
 540         # it must be correct pathname
 541         $input = validate_pathname($input)
 542                 or return undef;
 543         # restrictions on ref name according to git-check-ref-format
 544         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 545                 return undef;
 546         }
 547         return $input;
 548 }
 549
 550 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 551 sub to_utf8 {
 552         my $str = shift;
 553         return decode("utf8", $str, Encode::FB_DEFAULT);
 554 }
 555
 556 # quote unsafe chars, but keep the slash, even when it's not
 557 # correct, but quoted slashes look too horrible in bookmarks
 558 sub esc_param {
 559         my $str = shift;
 560         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 561         $str =~ s/\+/%2B/g;
 562         $str =~ s/ /\+/g;
 563         return $str;
 564 }
 565
 566 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 567 sub esc_url {
 568         my $str = shift;
 569         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 570         $str =~ s/\+/%2B/g;
 571         $str =~ s/ /\+/g;
 572         return $str;
 573 }
 574
 575 # replace invalid utf8 character with SUBSTITUTION sequence
 576 sub esc_html ($;%) {
 577         my $str = shift;
 578         my %opts = @_;
 579
 580         $str = to_utf8($str);
 581         $str = escapeHTML($str);
 582         if ($opts{'-nbsp'}) {
 583                 $str =~ s/ /&nbsp;/g;
 584         }
 585         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 586         return $str;
 587 }
 588
 589 # quote control characters and escape filename to HTML
 590 sub esc_path {
 591         my $str = shift;
 592         my %opts = @_;
 593
 594         $str = to_utf8($str);
 595         $str = escapeHTML($str);
 596         if ($opts{'-nbsp'}) {
 597                 $str =~ s/ /&nbsp;/g;
 598         }
 599         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 600         return $str;
 601 }
 602
 603 # Make control characters "printable", using character escape codes (CEC)
 604 sub quot_cec {
 605         my $cntrl = shift;
 606         my %es = ( # character escape codes, aka escape sequences
 607                    "\t" => '\t',   # tab            (HT)
 608                    "\n" => '\n',   # line feed      (LF)
 609                    "\r" => '\r',   # carrige return (CR)
 610                    "\f" => '\f',   # form feed      (FF)
 611                    "\b" => '\b',   # backspace      (BS)
 612                    "\a" => '\a',   # alarm (bell)   (BEL)
 613                    "\e" => '\e',   # escape         (ESC)
 614                    "\013" => '\v', # vertical tab   (VT)
 615                    "\000" => '\0', # nul character  (NUL)
 616                    );
 617         my $chr = ( (exists $es{$cntrl})
 618                     ? $es{$cntrl}
 619                     : sprintf('\%03o', ord($cntrl)) );
 620         return "<span class=\"cntrl\">$chr</span>";
 621 }
 622
 623 # Alternatively use unicode control pictures codepoints,
 624 # Unicode "printable representation" (PR)
 625 sub quot_upr {
 626         my $cntrl = shift;
 627         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 628         return "<span class=\"cntrl\">$chr</span>";
 629 }
 630
 631 # git may return quoted and escaped filenames
 632 sub unquote {
 633         my $str = shift;
 634
 635         sub unq {
 636                 my $seq = shift;
 637                 my %es = ( # character escape codes, aka escape sequences
 638                         't' => "\t",   # tab            (HT, TAB)
 639                         'n' => "\n",   # newline        (NL)
 640                         'r' => "\r",   # return         (CR)
 641                         'f' => "\f",   # form feed      (FF)
 642                         'b' => "\b",   # backspace      (BS)
 643                         'a' => "\a",   # alarm (bell)   (BEL)
 644                         'e' => "\e",   # escape         (ESC)
 645                         'v' => "\013", # vertical tab   (VT)
 646                 );
 647
 648                 if ($seq =~ m/^[0-7]{1,3}$/) {
 649                         # octal char sequence
 650                         return chr(oct($seq));
 651                 } elsif (exists $es{$seq}) {
 652                         # C escape sequence, aka character escape code
 653                         return $es{$seq}
 654                 }
 655                 # quoted ordinary character
 656                 return $seq;
 657         }
 658
 659         if ($str =~ m/^"(.*)"$/) {
 660                 # needs unquoting
 661                 $str = $1;
 662                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 663         }
 664         return $str;
 665 }
 666
 667 # escape tabs (convert tabs to spaces)
 668 sub untabify {
 669         my $line = shift;
 670
 671         while ((my $pos = index($line, "\t")) != -1) {
 672                 if (my $count = (8 - ($pos % 8))) {
 673                         my $spaces = ' ' x $count;
 674                         $line =~ s/\t/$spaces/;
 675                 }
 676         }
 677
 678         return $line;
 679 }
 680
 681 sub project_in_list {
 682         my $project = shift;
 683         my @list = git_get_projects_list();
 684         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 685 }
 686
 687 ## ----------------------------------------------------------------------
 688 ## HTML aware string manipulation
 689
 690 sub chop_str {
 691         my $str = shift;
 692         my $len = shift;
 693         my $add_len = shift || 10;
 694
 695         # allow only $len chars, but don't cut a word if it would fit in $add_len
 696         # if it doesn't fit, cut it if it's still longer than the dots we would add
 697         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 698         my $body = $1;
 699         my $tail = $2;
 700         if (length($tail) > 4) {
 701                 $tail = " ...";
 702                 $body =~ s/&[^;]*$//; # remove chopped character entities
 703         }
 704         return "$body$tail";
 705 }
 706
 707 ## ----------------------------------------------------------------------
 708 ## functions returning short strings
 709
 710 # CSS class for given age value (in seconds)
 711 sub age_class {
 712         my $age = shift;
 713
 714         if ($age < 60*60*2) {
 715                 return "age0";
 716         } elsif ($age < 60*60*24*2) {
 717                 return "age1";
 718         } else {
 719                 return "age2";
 720         }
 721 }
 722
 723 # convert age in seconds to "nn units ago" string
 724 sub age_string {
 725         my $age = shift;
 726         my $age_str;
 727
 728         if ($age > 60*60*24*365*2) {
 729                 $age_str = (int $age/60/60/24/365);
 730                 $age_str .= " years ago";
 731         } elsif ($age > 60*60*24*(365/12)*2) {
 732                 $age_str = int $age/60/60/24/(365/12);
 733                 $age_str .= " months ago";
 734         } elsif ($age > 60*60*24*7*2) {
 735                 $age_str = int $age/60/60/24/7;
 736                 $age_str .= " weeks ago";
 737         } elsif ($age > 60*60*24*2) {
 738                 $age_str = int $age/60/60/24;
 739                 $age_str .= " days ago";
 740         } elsif ($age > 60*60*2) {
 741                 $age_str = int $age/60/60;
 742                 $age_str .= " hours ago";
 743         } elsif ($age > 60*2) {
 744                 $age_str = int $age/60;
 745                 $age_str .= " min ago";
 746         } elsif ($age > 2) {
 747                 $age_str = int $age;
 748                 $age_str .= " sec ago";
 749         } else {
 750                 $age_str .= " right now";
 751         }
 752         return $age_str;
 753 }
 754
 755 # convert file mode in octal to symbolic file mode string
 756 sub mode_str {
 757         my $mode = oct shift;
 758
 759         if (S_ISDIR($mode & S_IFMT)) {
 760                 return 'drwxr-xr-x';
 761         } elsif (S_ISLNK($mode)) {
 762                 return 'lrwxrwxrwx';
 763         } elsif (S_ISREG($mode)) {
 764                 # git cares only about the executable bit
 765                 if ($mode & S_IXUSR) {
 766                         return '-rwxr-xr-x';
 767                 } else {
 768                         return '-rw-r--r--';
 769                 };
 770         } else {
 771                 return '----------';
 772         }
 773 }
 774
 775 # convert file mode in octal to file type string
 776 sub file_type {
 777         my $mode = shift;
 778
 779         if ($mode !~ m/^[0-7]+$/) {
 780                 return $mode;
 781         } else {
 782                 $mode = oct $mode;
 783         }
 784
 785         if (S_ISDIR($mode & S_IFMT)) {
 786                 return "directory";
 787         } elsif (S_ISLNK($mode)) {
 788                 return "symlink";
 789         } elsif (S_ISREG($mode)) {
 790                 return "file";
 791         } else {
 792                 return "unknown";
 793         }
 794 }
 795
 796 # convert file mode in octal to file type description string
 797 sub file_type_long {
 798         my $mode = shift;
 799
 800         if ($mode !~ m/^[0-7]+$/) {
 801                 return $mode;
 802         } else {
 803                 $mode = oct $mode;
 804         }
 805
 806         if (S_ISDIR($mode & S_IFMT)) {
 807                 return "directory";
 808         } elsif (S_ISLNK($mode)) {
 809                 return "symlink";
 810         } elsif (S_ISREG($mode)) {
 811                 if ($mode & S_IXUSR) {
 812                         return "executable";
 813                 } else {
 814                         return "file";
 815                 };
 816         } else {
 817                 return "unknown";
 818         }
 819 }
 820
 821
 822 ## ----------------------------------------------------------------------
 823 ## functions returning short HTML fragments, or transforming HTML fragments
 824 ## which don't beling to other sections
 825
 826 # format line of commit message.
 827 sub format_log_line_html {
 828         my $line = shift;
 829
 830         $line = esc_html($line, -nbsp=>1);
 831         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 832                 my $hash_text = $1;
 833                 my $link =
 834                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 835                                 -class => "text"}, $hash_text);
 836                 $line =~ s/$hash_text/$link/;
 837         }
 838         return $line;
 839 }
 840
 841 # format marker of refs pointing to given object
 842 sub format_ref_marker {
 843         my ($refs, $id) = @_;
 844         my $markers = '';
 845
 846         if (defined $refs->{$id}) {
 847                 foreach my $ref (@{$refs->{$id}}) {
 848                         my ($type, $name) = qw();
 849                         # e.g. tags/v2.6.11 or heads/next
 850                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 851                                 $type = $1;
 852                                 $name = $2;
 853                         } else {
 854                                 $type = "ref";
 855                                 $name = $ref;
 856                         }
 857
 858                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 859                                     esc_html($name) . "</span>";
 860                 }
 861         }
 862
 863         if ($markers) {
 864                 return ' <span class="refs">'. $markers . '</span>';
 865         } else {
 866                 return "";
 867         }
 868 }
 869
 870 # format, perhaps shortened and with markers, title line
 871 sub format_subject_html {
 872         my ($long, $short, $href, $extra) = @_;
 873         $extra = '' unless defined($extra);
 874
 875         if (length($short) < length($long)) {
 876                 return $cgi->a({-href => $href, -class => "list subject",
 877                                 -title => to_utf8($long)},
 878                        esc_html($short) . $extra);
 879         } else {
 880                 return $cgi->a({-href => $href, -class => "list subject"},
 881                        esc_html($long)  . $extra);
 882         }
 883 }
 884
 885 # format patch (diff) line (rather not to be used for diff headers)
 886 sub format_diff_line {
 887         my $line = shift;
 888         my ($from, $to) = @_;
 889         my $char = substr($line, 0, 1);
 890         my $diff_class = "";
 891
 892         chomp $line;
 893
 894         if ($char eq '+') {
 895                 $diff_class = " add";
 896         } elsif ($char eq "-") {
 897                 $diff_class = " rem";
 898         } elsif ($char eq "@") {
 899                 $diff_class = " chunk_header";
 900         } elsif ($char eq "\\") {
 901                 $diff_class = " incomplete";
 902         }
 903         $line = untabify($line);
 904         if ($from && $to && $line =~ m/^\@{2} /) {
 905                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 906                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 907
 908                 $from_lines = 0 unless defined $from_lines;
 909                 $to_lines   = 0 unless defined $to_lines;
 910
 911                 if ($from->{'href'}) {
 912                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 913                                              -class=>"list"}, $from_text);
 914                 }
 915                 if ($to->{'href'}) {
 916                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 917                                              -class=>"list"}, $to_text);
 918                 }
 919                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 920                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 921                 return "<div class=\"diff$diff_class\">$line</div>\n";
 922         }
 923         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 924 }
 925
 926 ## ----------------------------------------------------------------------
 927 ## git utility subroutines, invoking git commands
 928
 929 # returns path to the core git executable and the --git-dir parameter as list
 930 sub git_cmd {
 931         return $GIT, '--git-dir='.$git_dir;
 932 }
 933
 934 # returns path to the core git executable and the --git-dir parameter as string
 935 sub git_cmd_str {
 936         return join(' ', git_cmd());
 937 }
 938
 939 # get HEAD ref of given project as hash
 940 sub git_get_head_hash {
 941         my $project = shift;
 942         my $o_git_dir = $git_dir;
 943         my $retval = undef;
 944         $git_dir = "$projectroot/$project";
 945         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 946                 my $head = <$fd>;
 947                 close $fd;
 948                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 949                         $retval = $1;
 950                 }
 951         }
 952         if (defined $o_git_dir) {
 953                 $git_dir = $o_git_dir;
 954         }
 955         return $retval;
 956 }
 957
 958 # get type of given object
 959 sub git_get_type {
 960         my $hash = shift;
 961
 962         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 963         my $type = <$fd>;
 964         close $fd or return;
 965         chomp $type;
 966         return $type;
 967 }
 968
 969 sub git_get_project_config {
 970         my ($key, $type) = @_;
 971
 972         return unless ($key);
 973         $key =~ s/^gitweb\.//;
 974         return if ($key =~ m/\W/);
 975
 976         my @x = (git_cmd(), 'repo-config');
 977         if (defined $type) { push @x, $type; }
 978         push @x, "--get";
 979         push @x, "gitweb.$key";
 980         my $val = qx(@x);
 981         chomp $val;
 982         return ($val);
 983 }
 984
 985 # get hash of given path at given ref
 986 sub git_get_hash_by_path {
 987         my $base = shift;
 988         my $path = shift || return undef;
 989         my $type = shift;
 990
 991         $path =~ s,/+$,,;
 992
 993         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 994                 or die_error(undef, "Open git-ls-tree failed");
 995         my $line = <$fd>;
 996         close $fd or return undef;
 997
 998         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 999         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1000         if (defined $type && $type ne $2) {
1001                 # type doesn't match
1002                 return undef;
1003         }
1004         return $3;
1005 }
1006
1007 ## ......................................................................
1008 ## git utility functions, directly accessing git repository
1009
1010 sub git_get_project_description {
1011         my $path = shift;
1012
1013         open my $fd, "$projectroot/$path/description" or return undef;
1014         my $descr = <$fd>;
1015         close $fd;
1016         chomp $descr;
1017         return $descr;
1018 }
1019
1020 sub git_get_project_url_list {
1021         my $path = shift;
1022
1023         open my $fd, "$projectroot/$path/cloneurl" or return;
1024         my @git_project_url_list = map { chomp; $_ } <$fd>;
1025         close $fd;
1026
1027         return wantarray ? @git_project_url_list : \@git_project_url_list;
1028 }
1029
1030 sub git_get_projects_list {
1031         my ($filter) = @_;
1032         my @list;
1033
1034         $filter ||= '';
1035         $filter =~ s/\.git$//;
1036
1037         if (-d $projects_list) {
1038                 # search in directory
1039                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1040                 # remove the trailing "/"
1041                 $dir =~ s!/+$!!;
1042                 my $pfxlen = length("$dir");
1043
1044                 my ($check_forks) = gitweb_check_feature('forks');
1045
1046                 File::Find::find({
1047                         follow_fast => 1, # follow symbolic links
1048                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1049                         wanted => sub {
1050                                 # skip project-list toplevel, if we get it.
1051                                 return if (m!^[/.]$!);
1052                                 # only directories can be git repositories
1053                                 return unless (-d $_);
1054
1055                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1056                                 # we check related file in $projectroot
1057                                 if ($check_forks and $subdir =~ m#/.#) {
1058                                         $File::Find::prune = 1;
1059                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1060                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1061                                         $File::Find::prune = 1;
1062                                 }
1063                         },
1064                 }, "$dir");
1065
1066         } elsif (-f $projects_list) {
1067                 # read from file(url-encoded):
1068                 # 'git%2Fgit.git Linus+Torvalds'
1069                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1070                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1071                 open my ($fd), $projects_list or return;
1072                 while (my $line = <$fd>) {
1073                         chomp $line;
1074                         my ($path, $owner) = split ' ', $line;
1075                         $path = unescape($path);
1076                         $owner = unescape($owner);
1077                         if (!defined $path) {
1078                                 next;
1079                         }
1080                         if ($filter ne '') {
1081                                 # looking for forks;
1082                                 my $pfx = substr($path, 0, length($filter));
1083                                 if ($pfx ne $filter) {
1084                                         next;
1085                                 }
1086                                 my $sfx = substr($path, length($filter));
1087                                 if ($sfx !~ /^\/.*\.git$/) {
1088                                         next;
1089                                 }
1090                         }
1091                         if (check_export_ok("$projectroot/$path")) {
1092                                 my $pr = {
1093                                         path => $path,
1094                                         owner => to_utf8($owner),
1095                                 };
1096                                 push @list, $pr
1097                         }
1098                 }
1099                 close $fd;
1100         }
1101         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1102         return @list;
1103 }
1104
1105 sub git_get_project_owner {
1106         my $project = shift;
1107         my $owner;
1108
1109         return undef unless $project;
1110
1111         # read from file (url-encoded):
1112         # 'git%2Fgit.git Linus+Torvalds'
1113         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1114         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1115         if (-f $projects_list) {
1116                 open (my $fd , $projects_list);
1117                 while (my $line = <$fd>) {
1118                         chomp $line;
1119                         my ($pr, $ow) = split ' ', $line;
1120                         $pr = unescape($pr);
1121                         $ow = unescape($ow);
1122                         if ($pr eq $project) {
1123                                 $owner = to_utf8($ow);
1124                                 last;
1125                         }
1126                 }
1127                 close $fd;
1128         }
1129         if (!defined $owner) {
1130                 $owner = get_file_owner("$projectroot/$project");
1131         }
1132
1133         return $owner;
1134 }
1135
1136 sub git_get_last_activity {
1137         my ($path) = @_;
1138         my $fd;
1139
1140         $git_dir = "$projectroot/$path";
1141         open($fd, "-|", git_cmd(), 'for-each-ref',
1142              '--format=%(refname) %(committer)',
1143              '--sort=-committerdate',
1144              'refs/heads') or return;
1145         my $most_recent = <$fd>;
1146         close $fd or return;
1147         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1148                 my $timestamp = $1;
1149                 my $age = time - $timestamp;
1150                 return ($age, age_string($age));
1151         }
1152 }
1153
1154 sub git_get_references {
1155         my $type = shift || "";
1156         my %refs;
1157         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1158         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1159         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1160                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1161                 or return;
1162
1163         while (my $line = <$fd>) {
1164                 chomp $line;
1165                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1166                         if (defined $refs{$1}) {
1167                                 push @{$refs{$1}}, $2;
1168                         } else {
1169                                 $refs{$1} = [ $2 ];
1170                         }
1171                 }
1172         }
1173         close $fd or return;
1174         return \%refs;
1175 }
1176
1177 sub git_get_rev_name_tags {
1178         my $hash = shift || return undef;
1179
1180         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1181                 or return;
1182         my $name_rev = <$fd>;
1183         close $fd;
1184
1185         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1186                 return $1;
1187         } else {
1188                 # catches also '$hash undefined' output
1189                 return undef;
1190         }
1191 }
1192
1193 ## ----------------------------------------------------------------------
1194 ## parse to hash functions
1195
1196 sub parse_date {
1197         my $epoch = shift;
1198         my $tz = shift || "-0000";
1199
1200         my %date;
1201         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1202         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1203         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1204         $date{'hour'} = $hour;
1205         $date{'minute'} = $min;
1206         $date{'mday'} = $mday;
1207         $date{'day'} = $days[$wday];
1208         $date{'month'} = $months[$mon];
1209         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1210                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1211         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1212                              $mday, $months[$mon], $hour ,$min;
1213         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1214                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1215
1216         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1217         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1218         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1219         $date{'hour_local'} = $hour;
1220         $date{'minute_local'} = $min;
1221         $date{'tz_local'} = $tz;
1222         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1223                                   1900+$year, $mon+1, $mday,
1224                                   $hour, $min, $sec, $tz);
1225         return %date;
1226 }
1227
1228 sub parse_tag {
1229         my $tag_id = shift;
1230         my %tag;
1231         my @comment;
1232
1233         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1234         $tag{'id'} = $tag_id;
1235         while (my $line = <$fd>) {
1236                 chomp $line;
1237                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1238                         $tag{'object'} = $1;
1239                 } elsif ($line =~ m/^type (.+)$/) {
1240                         $tag{'type'} = $1;
1241                 } elsif ($line =~ m/^tag (.+)$/) {
1242                         $tag{'name'} = $1;
1243                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1244                         $tag{'author'} = $1;
1245                         $tag{'epoch'} = $2;
1246                         $tag{'tz'} = $3;
1247                 } elsif ($line =~ m/--BEGIN/) {
1248                         push @comment, $line;
1249                         last;
1250                 } elsif ($line eq "") {
1251                         last;
1252                 }
1253         }
1254         push @comment, <$fd>;
1255         $tag{'comment'} = \@comment;
1256         close $fd or return;
1257         if (!defined $tag{'name'}) {
1258                 return
1259         };
1260         return %tag
1261 }
1262
1263 sub parse_commit {
1264         my $commit_id = shift;
1265         my $commit_text = shift;
1266
1267         my @commit_lines;
1268         my %co;
1269
1270         if (defined $commit_text) {
1271                 @commit_lines = @$commit_text;
1272         } else {
1273                 local $/ = "\0";
1274                 open my $fd, "-|", git_cmd(), "rev-list",
1275                         "--header", "--parents", "--max-count=1",
1276                         $commit_id, "--"
1277                         or return;
1278                 @commit_lines = split '\n', <$fd>;
1279                 close $fd or return;
1280                 pop @commit_lines;
1281         }
1282         my $header = shift @commit_lines;
1283         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1284                 return;
1285         }
1286         ($co{'id'}, my @parents) = split ' ', $header;
1287         $co{'parents'} = \@parents;
1288         $co{'parent'} = $parents[0];
1289         while (my $line = shift @commit_lines) {
1290                 last if $line eq "\n";
1291                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1292                         $co{'tree'} = $1;
1293                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1294                         $co{'author'} = $1;
1295                         $co{'author_epoch'} = $2;
1296                         $co{'author_tz'} = $3;
1297                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1298                                 $co{'author_name'}  = $1;
1299                                 $co{'author_email'} = $2;
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'} = $co{'committer'};
1308                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1309                                 $co{'committer_name'}  = $1;
1310                                 $co{'committer_email'} = $2;
1311                         } else {
1312                                 $co{'committer_name'} = $co{'committer'};
1313                         }
1314                 }
1315         }
1316         if (!defined $co{'tree'}) {
1317                 return;
1318         };
1319
1320         foreach my $title (@commit_lines) {
1321                 $title =~ s/^    //;
1322                 if ($title ne "") {
1323                         $co{'title'} = chop_str($title, 80, 5);
1324                         # remove leading stuff of merges to make the interesting part visible
1325                         if (length($title) > 50) {
1326                                 $title =~ s/^Automatic //;
1327                                 $title =~ s/^merge (of|with) /Merge ... /i;
1328                                 if (length($title) > 50) {
1329                                         $title =~ s/(http|rsync):\/\///;
1330                                 }
1331                                 if (length($title) > 50) {
1332                                         $title =~ s/(master|www|rsync)\.//;
1333                                 }
1334                                 if (length($title) > 50) {
1335                                         $title =~ s/kernel.org:?//;
1336                                 }
1337                                 if (length($title) > 50) {
1338                                         $title =~ s/\/pub\/scm//;
1339                                 }
1340                         }
1341                         $co{'title_short'} = chop_str($title, 50, 5);
1342                         last;
1343                 }
1344         }
1345         if ($co{'title'} eq "") {
1346                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1347         }
1348         # remove added spaces
1349         foreach my $line (@commit_lines) {
1350                 $line =~ s/^    //;
1351         }
1352         $co{'comment'} = \@commit_lines;
1353
1354         my $age = time - $co{'committer_epoch'};
1355         $co{'age'} = $age;
1356         $co{'age_string'} = age_string($age);
1357         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1358         if ($age > 60*60*24*7*2) {
1359                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1360                 $co{'age_string_age'} = $co{'age_string'};
1361         } else {
1362                 $co{'age_string_date'} = $co{'age_string'};
1363                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1364         }
1365         return %co;
1366 }
1367
1368 # parse ref from ref_file, given by ref_id, with given type
1369 sub parse_ref {
1370         my $ref_file = shift;
1371         my $ref_id = shift;
1372         my $type = shift || git_get_type($ref_id);
1373         my %ref_item;
1374
1375         $ref_item{'type'} = $type;
1376         $ref_item{'id'} = $ref_id;
1377         $ref_item{'epoch'} = 0;
1378         $ref_item{'age'} = "unknown";
1379         if ($type eq "tag") {
1380                 my %tag = parse_tag($ref_id);
1381                 $ref_item{'comment'} = $tag{'comment'};
1382                 if ($tag{'type'} eq "commit") {
1383                         my %co = parse_commit($tag{'object'});
1384                         $ref_item{'epoch'} = $co{'committer_epoch'};
1385                         $ref_item{'age'} = $co{'age_string'};
1386                 } elsif (defined($tag{'epoch'})) {
1387                         my $age = time - $tag{'epoch'};
1388                         $ref_item{'epoch'} = $tag{'epoch'};
1389                         $ref_item{'age'} = age_string($age);
1390                 }
1391                 $ref_item{'reftype'} = $tag{'type'};
1392                 $ref_item{'name'} = $tag{'name'};
1393                 $ref_item{'refid'} = $tag{'object'};
1394         } elsif ($type eq "commit"){
1395                 my %co = parse_commit($ref_id);
1396                 $ref_item{'reftype'} = "commit";
1397                 $ref_item{'name'} = $ref_file;
1398                 $ref_item{'title'} = $co{'title'};
1399                 $ref_item{'refid'} = $ref_id;
1400                 $ref_item{'epoch'} = $co{'committer_epoch'};
1401                 $ref_item{'age'} = $co{'age_string'};
1402         } else {
1403                 $ref_item{'reftype'} = $type;
1404                 $ref_item{'name'} = $ref_file;
1405                 $ref_item{'refid'} = $ref_id;
1406         }
1407
1408         return %ref_item;
1409 }
1410
1411 # parse line of git-diff-tree "raw" output
1412 sub parse_difftree_raw_line {
1413         my $line = shift;
1414         my %res;
1415
1416         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1417         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1418         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1419                 $res{'from_mode'} = $1;
1420                 $res{'to_mode'} = $2;
1421                 $res{'from_id'} = $3;
1422                 $res{'to_id'} = $4;
1423                 $res{'status'} = $5;
1424                 $res{'similarity'} = $6;
1425                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1426                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1427                 } else {
1428                         $res{'file'} = unquote($7);
1429                 }
1430         }
1431         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1432         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1433                 $res{'commit'} = $1;
1434         }
1435
1436         return wantarray ? %res : \%res;
1437 }
1438
1439 # parse line of git-ls-tree output
1440 sub parse_ls_tree_line ($;%) {
1441         my $line = shift;
1442         my %opts = @_;
1443         my %res;
1444
1445         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1446         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1447
1448         $res{'mode'} = $1;
1449         $res{'type'} = $2;
1450         $res{'hash'} = $3;
1451         if ($opts{'-z'}) {
1452                 $res{'name'} = $4;
1453         } else {
1454                 $res{'name'} = unquote($4);
1455         }
1456
1457         return wantarray ? %res : \%res;
1458 }
1459
1460 ## ......................................................................
1461 ## parse to array of hashes functions
1462
1463 sub git_get_heads_list {
1464         my $limit = shift;
1465         my @headslist;
1466
1467         open my $fd, '-|', git_cmd(), 'for-each-ref',
1468                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1469                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1470                 'refs/heads'
1471                 or return;
1472         while (my $line = <$fd>) {
1473                 my %ref_item;
1474
1475                 chomp $line;
1476                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1477                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1478                 my ($committer, $epoch, $tz) =
1479                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1480                 $name =~ s!^refs/heads/!!;
1481
1482                 $ref_item{'name'}  = $name;
1483                 $ref_item{'id'}    = $hash;
1484                 $ref_item{'title'} = $title || '(no commit message)';
1485                 $ref_item{'epoch'} = $epoch;
1486                 if ($epoch) {
1487                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1488                 } else {
1489                         $ref_item{'age'} = "unknown";
1490                 }
1491
1492                 push @headslist, \%ref_item;
1493         }
1494         close $fd;
1495
1496         return wantarray ? @headslist : \@headslist;
1497 }
1498
1499 sub git_get_tags_list {
1500         my $limit = shift;
1501         my @tagslist;
1502
1503         open my $fd, '-|', git_cmd(), 'for-each-ref',
1504                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1505                 '--format=%(objectname) %(objecttype) %(refname) '.
1506                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1507                 'refs/tags'
1508                 or return;
1509         while (my $line = <$fd>) {
1510                 my %ref_item;
1511
1512                 chomp $line;
1513                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1514                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1515                 my ($creator, $epoch, $tz) =
1516                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1517                 $name =~ s!^refs/tags/!!;
1518
1519                 $ref_item{'type'} = $type;
1520                 $ref_item{'id'} = $id;
1521                 $ref_item{'name'} = $name;
1522                 if ($type eq "tag") {
1523                         $ref_item{'subject'} = $title;
1524                         $ref_item{'reftype'} = $reftype;
1525                         $ref_item{'refid'}   = $refid;
1526                 } else {
1527                         $ref_item{'reftype'} = $type;
1528                         $ref_item{'refid'}   = $id;
1529                 }
1530
1531                 if ($type eq "tag" || $type eq "commit") {
1532                         $ref_item{'epoch'} = $epoch;
1533                         if ($epoch) {
1534                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1535                         } else {
1536                                 $ref_item{'age'} = "unknown";
1537                         }
1538                 }
1539
1540                 push @tagslist, \%ref_item;
1541         }
1542         close $fd;
1543
1544         return wantarray ? @tagslist : \@tagslist;
1545 }
1546
1547 ## ----------------------------------------------------------------------
1548 ## filesystem-related functions
1549
1550 sub get_file_owner {
1551         my $path = shift;
1552
1553         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1554         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1555         if (!defined $gcos) {
1556                 return undef;
1557         }
1558         my $owner = $gcos;
1559         $owner =~ s/[,;].*$//;
1560         return to_utf8($owner);
1561 }
1562
1563 ## ......................................................................
1564 ## mimetype related functions
1565
1566 sub mimetype_guess_file {
1567         my $filename = shift;
1568         my $mimemap = shift;
1569         -r $mimemap or return undef;
1570
1571         my %mimemap;
1572         open(MIME, $mimemap) or return undef;
1573         while (<MIME>) {
1574                 next if m/^#/; # skip comments
1575                 my ($mime, $exts) = split(/\t+/);
1576                 if (defined $exts) {
1577                         my @exts = split(/\s+/, $exts);
1578                         foreach my $ext (@exts) {
1579                                 $mimemap{$ext} = $mime;
1580                         }
1581                 }
1582         }
1583         close(MIME);
1584
1585         $filename =~ /\.([^.]*)$/;
1586         return $mimemap{$1};
1587 }
1588
1589 sub mimetype_guess {
1590         my $filename = shift;
1591         my $mime;
1592         $filename =~ /\./ or return undef;
1593
1594         if ($mimetypes_file) {
1595                 my $file = $mimetypes_file;
1596                 if ($file !~ m!^/!) { # if it is relative path
1597                         # it is relative to project
1598                         $file = "$projectroot/$project/$file";
1599                 }
1600                 $mime = mimetype_guess_file($filename, $file);
1601         }
1602         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1603         return $mime;
1604 }
1605
1606 sub blob_mimetype {
1607         my $fd = shift;
1608         my $filename = shift;
1609
1610         if ($filename) {
1611                 my $mime = mimetype_guess($filename);
1612                 $mime and return $mime;
1613         }
1614
1615         # just in case
1616         return $default_blob_plain_mimetype unless $fd;
1617
1618         if (-T $fd) {
1619                 return 'text/plain' .
1620                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1621         } elsif (! $filename) {
1622                 return 'application/octet-stream';
1623         } elsif ($filename =~ m/\.png$/i) {
1624                 return 'image/png';
1625         } elsif ($filename =~ m/\.gif$/i) {
1626                 return 'image/gif';
1627         } elsif ($filename =~ m/\.jpe?g$/i) {
1628                 return 'image/jpeg';
1629         } else {
1630                 return 'application/octet-stream';
1631         }
1632 }
1633
1634 ## ======================================================================
1635 ## functions printing HTML: header, footer, error page
1636
1637 sub git_header_html {
1638         my $status = shift || "200 OK";
1639         my $expires = shift;
1640
1641         my $title = "$site_name";
1642         if (defined $project) {
1643                 $title .= " - $project";
1644                 if (defined $action) {
1645                         $title .= "/$action";
1646                         if (defined $file_name) {
1647                                 $title .= " - " . esc_path($file_name);
1648                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1649                                         $title .= "/";
1650                                 }
1651                         }
1652                 }
1653         }
1654         my $content_type;
1655         # require explicit support from the UA if we are to send the page as
1656         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1657         # we have to do this because MSIE sometimes globs '*/*', pretending to
1658         # support xhtml+xml but choking when it gets what it asked for.
1659         if (defined $cgi->http('HTTP_ACCEPT') &&
1660             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1661             $cgi->Accept('application/xhtml+xml') != 0) {
1662                 $content_type = 'application/xhtml+xml';
1663         } else {
1664                 $content_type = 'text/html';
1665         }
1666         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1667                            -status=> $status, -expires => $expires);
1668         print <<EOF;
1669 <?xml version="1.0" encoding="utf-8"?>
1670 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1671 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1672 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1673 <!-- git core binaries version $git_version -->
1674 <head>
1675 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1676 <meta name="generator" content="gitweb/$version git/$git_version"/>
1677 <meta name="robots" content="index, nofollow"/>
1678 <title>$title</title>
1679 EOF
1680 # print out each stylesheet that exist
1681         if (defined $stylesheet) {
1682 #provides backwards capability for those people who define style sheet in a config file
1683                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1684         } else {
1685                 foreach my $stylesheet (@stylesheets) {
1686                         next unless $stylesheet;
1687                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1688                 }
1689         }
1690         if (defined $project) {
1691                 printf('<link rel="alternate" title="%s log RSS feed" '.
1692                        'href="%s" type="application/rss+xml" />'."\n",
1693                        esc_param($project), href(action=>"rss"));
1694                 printf('<link rel="alternate" title="%s log Atom feed" '.
1695                        'href="%s" type="application/atom+xml" />'."\n",
1696                        esc_param($project), href(action=>"atom"));
1697         } else {
1698                 printf('<link rel="alternate" title="%s projects list" '.
1699                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1700                        $site_name, href(project=>undef, action=>"project_index"));
1701                 printf('<link rel="alternate" title="%s projects feeds" '.
1702                        'href="%s" type="text/x-opml"/>'."\n",
1703                        $site_name, href(project=>undef, action=>"opml"));
1704         }
1705         if (defined $favicon) {
1706                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1707         }
1708
1709         print "</head>\n" .
1710               "<body>\n";
1711
1712         if (-f $site_header) {
1713                 open (my $fd, $site_header);
1714                 print <$fd>;
1715                 close $fd;
1716         }
1717
1718         print "<div class=\"page_header\">\n" .
1719               $cgi->a({-href => esc_url($logo_url),
1720                        -title => $logo_label},
1721                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1722         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1723         if (defined $project) {
1724                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1725                 if (defined $action) {
1726                         print " / $action";
1727                 }
1728                 print "\n";
1729                 if (!defined $searchtext) {
1730                         $searchtext = "";
1731                 }
1732                 my $search_hash;
1733                 if (defined $hash_base) {
1734                         $search_hash = $hash_base;
1735                 } elsif (defined $hash) {
1736                         $search_hash = $hash;
1737                 } else {
1738                         $search_hash = "HEAD";
1739                 }
1740                 $cgi->param("a", "search");
1741                 $cgi->param("h", $search_hash);
1742                 $cgi->param("p", $project);
1743                 print $cgi->startform(-method => "get", -action => $my_uri) .
1744                       "<div class=\"search\">\n" .
1745                       $cgi->hidden(-name => "p") . "\n" .
1746                       $cgi->hidden(-name => "a") . "\n" .
1747                       $cgi->hidden(-name => "h") . "\n" .
1748                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1749                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1750                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1751                       " search:\n",
1752                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1753                       "</div>" .
1754                       $cgi->end_form() . "\n";
1755         }
1756         print "</div>\n";
1757 }
1758
1759 sub git_footer_html {
1760         print "<div class=\"page_footer\">\n";
1761         if (defined $project) {
1762                 my $descr = git_get_project_description($project);
1763                 if (defined $descr) {
1764                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1765                 }
1766                 print $cgi->a({-href => href(action=>"rss"),
1767                               -class => "rss_logo"}, "RSS") . " ";
1768                 print $cgi->a({-href => href(action=>"atom"),
1769                               -class => "rss_logo"}, "Atom") . "\n";
1770         } else {
1771                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1772                               -class => "rss_logo"}, "OPML") . " ";
1773                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1774                               -class => "rss_logo"}, "TXT") . "\n";
1775         }
1776         print "</div>\n" ;
1777
1778         if (-f $site_footer) {
1779                 open (my $fd, $site_footer);
1780                 print <$fd>;
1781                 close $fd;
1782         }
1783
1784         print "</body>\n" .
1785               "</html>";
1786 }
1787
1788 sub die_error {
1789         my $status = shift || "403 Forbidden";
1790         my $error = shift || "Malformed query, file missing or permission denied";
1791
1792         git_header_html($status);
1793         print <<EOF;
1794 <div class="page_body">
1795 <br /><br />
1796 $status - $error
1797 <br />
1798 </div>
1799 EOF
1800         git_footer_html();
1801         exit;
1802 }
1803
1804 ## ----------------------------------------------------------------------
1805 ## functions printing or outputting HTML: navigation
1806
1807 sub git_print_page_nav {
1808         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1809         $extra = '' if !defined $extra; # pager or formats
1810
1811         my @navs = qw(summary shortlog log commit commitdiff tree);
1812         if ($suppress) {
1813                 @navs = grep { $_ ne $suppress } @navs;
1814         }
1815
1816         my %arg = map { $_ => {action=>$_} } @navs;
1817         if (defined $head) {
1818                 for (qw(commit commitdiff)) {
1819                         $arg{$_}{hash} = $head;
1820                 }
1821                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1822                         for (qw(shortlog log)) {
1823                                 $arg{$_}{hash} = $head;
1824                         }
1825                 }
1826         }
1827         $arg{tree}{hash} = $treehead if defined $treehead;
1828         $arg{tree}{hash_base} = $treebase if defined $treebase;
1829
1830         print "<div class=\"page_nav\">\n" .
1831                 (join " | ",
1832                  map { $_ eq $current ?
1833                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1834                  } @navs);
1835         print "<br/>\n$extra<br/>\n" .
1836               "</div>\n";
1837 }
1838
1839 sub format_paging_nav {
1840         my ($action, $hash, $head, $page, $nrevs) = @_;
1841         my $paging_nav;
1842
1843
1844         if ($hash ne $head || $page) {
1845                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1846         } else {
1847                 $paging_nav .= "HEAD";
1848         }
1849
1850         if ($page > 0) {
1851                 $paging_nav .= " &sdot; " .
1852                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1853                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1854         } else {
1855                 $paging_nav .= " &sdot; prev";
1856         }
1857
1858         if ($nrevs >= (100 * ($page+1)-1)) {
1859                 $paging_nav .= " &sdot; " .
1860                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1861                                  -accesskey => "n", -title => "Alt-n"}, "next");
1862         } else {
1863                 $paging_nav .= " &sdot; next";
1864         }
1865
1866         return $paging_nav;
1867 }
1868
1869 ## ......................................................................
1870 ## functions printing or outputting HTML: div
1871
1872 sub git_print_header_div {
1873         my ($action, $title, $hash, $hash_base) = @_;
1874         my %args = ();
1875
1876         $args{action} = $action;
1877         $args{hash} = $hash if $hash;
1878         $args{hash_base} = $hash_base if $hash_base;
1879
1880         print "<div class=\"header\">\n" .
1881               $cgi->a({-href => href(%args), -class => "title"},
1882               $title ? $title : $action) .
1883               "\n</div>\n";
1884 }
1885
1886 #sub git_print_authorship (\%) {
1887 sub git_print_authorship {
1888         my $co = shift;
1889
1890         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1891         print "<div class=\"author_date\">" .
1892               esc_html($co->{'author_name'}) .
1893               " [$ad{'rfc2822'}";
1894         if ($ad{'hour_local'} < 6) {
1895                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1896                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1897         } else {
1898                 printf(" (%02d:%02d %s)",
1899                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1900         }
1901         print "]</div>\n";
1902 }
1903
1904 sub git_print_page_path {
1905         my $name = shift;
1906         my $type = shift;
1907         my $hb = shift;
1908
1909
1910         print "<div class=\"page_path\">";
1911         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1912                       -title => 'tree root'}, "[$project]");
1913         print " / ";
1914         if (defined $name) {
1915                 my @dirname = split '/', $name;
1916                 my $basename = pop @dirname;
1917                 my $fullname = '';
1918
1919                 foreach my $dir (@dirname) {
1920                         $fullname .= ($fullname ? '/' : '') . $dir;
1921                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1922                                                      hash_base=>$hb),
1923                                       -title => esc_html($fullname)}, esc_path($dir));
1924                         print " / ";
1925                 }
1926                 if (defined $type && $type eq 'blob') {
1927                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1928                                                      hash_base=>$hb),
1929                                       -title => esc_html($name)}, esc_path($basename));
1930                 } elsif (defined $type && $type eq 'tree') {
1931                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1932                                                      hash_base=>$hb),
1933                                       -title => esc_html($name)}, esc_path($basename));
1934                         print " / ";
1935                 } else {
1936                         print esc_path($basename);
1937                 }
1938         }
1939         print "<br/></div>\n";
1940 }
1941
1942 # sub git_print_log (\@;%) {
1943 sub git_print_log ($;%) {
1944         my $log = shift;
1945         my %opts = @_;
1946
1947         if ($opts{'-remove_title'}) {
1948                 # remove title, i.e. first line of log
1949                 shift @$log;
1950         }
1951         # remove leading empty lines
1952         while (defined $log->[0] && $log->[0] eq "") {
1953                 shift @$log;
1954         }
1955
1956         # print log
1957         my $signoff = 0;
1958         my $empty = 0;
1959         foreach my $line (@$log) {
1960                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1961                         $signoff = 1;
1962                         $empty = 0;
1963                         if (! $opts{'-remove_signoff'}) {
1964                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1965                                 next;
1966                         } else {
1967                                 # remove signoff lines
1968                                 next;
1969                         }
1970                 } else {
1971                         $signoff = 0;
1972                 }
1973
1974                 # print only one empty line
1975                 # do not print empty line after signoff
1976                 if ($line eq "") {
1977                         next if ($empty || $signoff);
1978                         $empty = 1;
1979                 } else {
1980                         $empty = 0;
1981                 }
1982
1983                 print format_log_line_html($line) . "<br/>\n";
1984         }
1985
1986         if ($opts{'-final_empty_line'}) {
1987                 # end with single empty line
1988                 print "<br/>\n" unless $empty;
1989         }
1990 }
1991
1992 # return link target (what link points to)
1993 sub git_get_link_target {
1994         my $hash = shift;
1995         my $link_target;
1996
1997         # read link
1998         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
1999                 or return;
2000         {
2001                 local $/;
2002                 $link_target = <$fd>;
2003         }
2004         close $fd
2005                 or return;
2006
2007         return $link_target;
2008 }
2009
2010 # given link target, and the directory (basedir) the link is in,
2011 # return target of link relative to top directory (top tree);
2012 # return undef if it is not possible (including absolute links).
2013 sub normalize_link_target {
2014         my ($link_target, $basedir, $hash_base) = @_;
2015
2016         # we can normalize symlink target only if $hash_base is provided
2017         return unless $hash_base;
2018
2019         # absolute symlinks (beginning with '/') cannot be normalized
2020         return if (substr($link_target, 0, 1) eq '/');
2021
2022         # normalize link target to path from top (root) tree (dir)
2023         my $path;
2024         if ($basedir) {
2025                 $path = $basedir . '/' . $link_target;
2026         } else {
2027                 # we are in top (root) tree (dir)
2028                 $path = $link_target;
2029         }
2030
2031         # remove //, /./, and /../
2032         my @path_parts;
2033         foreach my $part (split('/', $path)) {
2034                 # discard '.' and ''
2035                 next if (!$part || $part eq '.');
2036                 # handle '..'
2037                 if ($part eq '..') {
2038                         if (@path_parts) {
2039                                 pop @path_parts;
2040                         } else {
2041                                 # link leads outside repository (outside top dir)
2042                                 return;
2043                         }
2044                 } else {
2045                         push @path_parts, $part;
2046                 }
2047         }
2048         $path = join('/', @path_parts);
2049
2050         return $path;
2051 }
2052
2053 # print tree entry (row of git_tree), but without encompassing <tr> element
2054 sub git_print_tree_entry {
2055         my ($t, $basedir, $hash_base, $have_blame) = @_;
2056
2057         my %base_key = ();
2058         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2059
2060         # The format of a table row is: mode list link.  Where mode is
2061         # the mode of the entry, list is the name of the entry, an href,
2062         # and link is the action links of the entry.
2063
2064         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2065         if ($t->{'type'} eq "blob") {
2066                 print "<td class=\"list\">" .
2067                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2068                                                file_name=>"$basedir$t->{'name'}", %base_key),
2069                                 -class => "list"}, esc_path($t->{'name'}));
2070                 if (S_ISLNK(oct $t->{'mode'})) {
2071                         my $link_target = git_get_link_target($t->{'hash'});
2072                         if ($link_target) {
2073                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2074                                 if (defined $norm_target) {
2075                                         print " -> " .
2076                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2077                                                                      file_name=>$norm_target),
2078                                                        -title => $norm_target}, esc_path($link_target));
2079                                 } else {
2080                                         print " -> " . esc_path($link_target);
2081                                 }
2082                         }
2083                 }
2084                 print "</td>\n";
2085                 print "<td class=\"link\">";
2086                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2087                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2088                               "blob");
2089                 if ($have_blame) {
2090                         print " | " .
2091                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2092                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2093                                       "blame");
2094                 }
2095                 if (defined $hash_base) {
2096                         print " | " .
2097                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2098                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2099                                       "history");
2100                 }
2101                 print " | " .
2102                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2103                                                file_name=>"$basedir$t->{'name'}")},
2104                                 "raw");
2105                 print "</td>\n";
2106
2107         } elsif ($t->{'type'} eq "tree") {
2108                 print "<td class=\"list\">";
2109                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2110                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2111                               esc_path($t->{'name'}));
2112                 print "</td>\n";
2113                 print "<td class=\"link\">";
2114                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2115                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2116                               "tree");
2117                 if (defined $hash_base) {
2118                         print " | " .
2119                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2120                                                      file_name=>"$basedir$t->{'name'}")},
2121                                       "history");
2122                 }
2123                 print "</td>\n";
2124         }
2125 }
2126
2127 ## ......................................................................
2128 ## functions printing large fragments of HTML
2129
2130 sub git_difftree_body {
2131         my ($difftree, $hash, $parent) = @_;
2132         my ($have_blame) = gitweb_check_feature('blame');
2133         print "<div class=\"list_head\">\n";
2134         if ($#{$difftree} > 10) {
2135                 print(($#{$difftree} + 1) . " files changed:\n");
2136         }
2137         print "</div>\n";
2138
2139         print "<table class=\"diff_tree\">\n";
2140         my $alternate = 1;
2141         my $patchno = 0;
2142         foreach my $line (@{$difftree}) {
2143                 my %diff = parse_difftree_raw_line($line);
2144
2145                 if ($alternate) {
2146                         print "<tr class=\"dark\">\n";
2147                 } else {
2148                         print "<tr class=\"light\">\n";
2149                 }
2150                 $alternate ^= 1;
2151
2152                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2153                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2154                 if ($diff{'to_mode'} ne ('0' x 6)) {
2155                         $to_mode_oct = oct $diff{'to_mode'};
2156                         if (S_ISREG($to_mode_oct)) { # only for regular file
2157                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2158                         }
2159                         $to_file_type = file_type($diff{'to_mode'});
2160                 }
2161                 if ($diff{'from_mode'} ne ('0' x 6)) {
2162                         $from_mode_oct = oct $diff{'from_mode'};
2163                         if (S_ISREG($to_mode_oct)) { # only for regular file
2164                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2165                         }
2166                         $from_file_type = file_type($diff{'from_mode'});
2167                 }
2168
2169                 if ($diff{'status'} eq "A") { # created
2170                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2171                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2172                         $mode_chng   .= "]</span>";
2173                         print "<td>";
2174                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2175                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2176                                       -class => "list"}, esc_path($diff{'file'}));
2177                         print "</td>\n";
2178                         print "<td>$mode_chng</td>\n";
2179                         print "<td class=\"link\">";
2180                         if ($action eq 'commitdiff') {
2181                                 # link to patch
2182                                 $patchno++;
2183                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2184                                 print " | ";
2185                         }
2186                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2187                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2188                                       "blob") . " | ";
2189                         print "</td>\n";
2190
2191                 } elsif ($diff{'status'} eq "D") { # deleted
2192                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2193                         print "<td>";
2194                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2195                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2196                                        -class => "list"}, esc_path($diff{'file'}));
2197                         print "</td>\n";
2198                         print "<td>$mode_chng</td>\n";
2199                         print "<td class=\"link\">";
2200                         if ($action eq 'commitdiff') {
2201                                 # link to patch
2202                                 $patchno++;
2203                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2204                                 print " | ";
2205                         }
2206                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2207                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2208                                       "blob") . " | ";
2209                         if ($have_blame) {
2210                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2211                                                              file_name=>$diff{'file'})},
2212                                               "blame") . " | ";
2213                         }
2214                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2215                                                      file_name=>$diff{'file'})},
2216                                       "history");
2217                         print "</td>\n";
2218
2219                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2220                         my $mode_chnge = "";
2221                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2222                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2223                                 if ($from_file_type != $to_file_type) {
2224                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2225                                 }
2226                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2227                                         if ($from_mode_str && $to_mode_str) {
2228                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2229                                         } elsif ($to_mode_str) {
2230                                                 $mode_chnge .= " mode: $to_mode_str";
2231                                         }
2232                                 }
2233                                 $mode_chnge .= "]</span>\n";
2234                         }
2235                         print "<td>";
2236                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2237                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2238                                       -class => "list"}, esc_path($diff{'file'}));
2239                         print "</td>\n";
2240                         print "<td>$mode_chnge</td>\n";
2241                         print "<td class=\"link\">";
2242                         if ($action eq 'commitdiff') {
2243                                 # link to patch
2244                                 $patchno++;
2245                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2246                                       " | ";
2247                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2248                                 # "commit" view and modified file (not onlu mode changed)
2249                                 print $cgi->a({-href => href(action=>"blobdiff",
2250                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2251                                                              hash_base=>$hash, hash_parent_base=>$parent,
2252                                                              file_name=>$diff{'file'})},
2253                                               "diff") .
2254                                       " | ";
2255                         }
2256                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2257                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2258                                        "blob") . " | ";
2259                         if ($have_blame) {
2260                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2261                                                              file_name=>$diff{'file'})},
2262                                               "blame") . " | ";
2263                         }
2264                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2265                                                      file_name=>$diff{'file'})},
2266                                       "history");
2267                         print "</td>\n";
2268
2269                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2270                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2271                         my $nstatus = $status_name{$diff{'status'}};
2272                         my $mode_chng = "";
2273                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2274                                 # mode also for directories, so we cannot use $to_mode_str
2275                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2276                         }
2277                         print "<td>" .
2278                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2279                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2280                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2281                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2282                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2283                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2284                                       -class => "list"}, esc_path($diff{'from_file'})) .
2285                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2286                               "<td class=\"link\">";
2287                         if ($action eq 'commitdiff') {
2288                                 # link to patch
2289                                 $patchno++;
2290                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2291                                       " | ";
2292                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2293                                 # "commit" view and modified file (not only pure rename or copy)
2294                                 print $cgi->a({-href => href(action=>"blobdiff",
2295                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2296                                                              hash_base=>$hash, hash_parent_base=>$parent,
2297                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2298                                               "diff") .
2299                                       " | ";
2300                         }
2301                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2302                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2303                                       "blob") . " | ";
2304                         if ($have_blame) {
2305                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2306                                                              file_name=>$diff{'to_file'})},
2307                                               "blame") . " | ";
2308                         }
2309                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2310                                                     file_name=>$diff{'to_file'})},
2311                                       "history");
2312                         print "</td>\n";
2313
2314                 } # we should not encounter Unmerged (U) or Unknown (X) status
2315                 print "</tr>\n";
2316         }
2317         print "</table>\n";
2318 }
2319
2320 sub git_patchset_body {
2321         my ($fd, $difftree, $hash, $hash_parent) = @_;
2322
2323         my $patch_idx = 0;
2324         my $patch_line;
2325         my $diffinfo;
2326         my (%from, %to);
2327         my ($from_id, $to_id);
2328
2329         print "<div class=\"patchset\">\n";
2330
2331         # skip to first patch
2332         while ($patch_line = <$fd>) {
2333                 chomp $patch_line;
2334
2335                 last if ($patch_line =~ m/^diff /);
2336         }
2337
2338  PATCH:
2339         while ($patch_line) {
2340                 my @diff_header;
2341
2342                 # git diff header
2343                 #assert($patch_line =~ m/^diff /) if DEBUG;
2344                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2345                 push @diff_header, $patch_line;
2346
2347                 # extended diff header
2348         EXTENDED_HEADER:
2349                 while ($patch_line = <$fd>) {
2350                         chomp $patch_line;
2351
2352                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2353
2354                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2355                                 $from_id = $1;
2356                                 $to_id   = $2;
2357                         }
2358
2359                         push @diff_header, $patch_line;
2360                 }
2361                 #last PATCH unless $patch_line;
2362                 my $last_patch_line = $patch_line;
2363
2364                 # check if current patch belong to current raw line
2365                 # and parse raw git-diff line if needed
2366                 if (defined $diffinfo &&
2367                     $diffinfo->{'from_id'} eq $from_id &&
2368                     $diffinfo->{'to_id'}   eq $to_id) {
2369                         # this is split patch
2370                         print "<div class=\"patch cont\">\n";
2371                 } else {
2372                         # advance raw git-diff output if needed
2373                         $patch_idx++ if defined $diffinfo;
2374
2375                         # read and prepare patch information
2376                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2377                                 # pre-parsed (or generated by hand)
2378                                 $diffinfo = $difftree->[$patch_idx];
2379                         } else {
2380                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2381                         }
2382                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2383                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2384                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2385                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2386                                                      hash=>$diffinfo->{'from_id'},
2387                                                      file_name=>$from{'file'});
2388                         }
2389                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2390                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2391                                                    hash=>$diffinfo->{'to_id'},
2392                                                    file_name=>$to{'file'});
2393                         }
2394                         # this is first patch for raw difftree line with $patch_idx index
2395                         # we index @$difftree array from 0, but number patches from 1
2396                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2397                 }
2398
2399                 # print "git diff" header
2400                 $patch_line = shift @diff_header;
2401                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2402                 if ($from{'href'}) {
2403                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2404                                                'a/' . esc_path($from{'file'}));
2405                 } else { # file was added
2406                         $patch_line .= 'a/' . esc_path($from{'file'});
2407                 }
2408                 $patch_line .= ' ';
2409                 if ($to{'href'}) {
2410                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2411                                                'b/' . esc_path($to{'file'}));
2412                 } else { # file was deleted
2413                         $patch_line .= 'b/' . esc_path($to{'file'});
2414                 }
2415                 print "<div class=\"diff header\">$patch_line</div>\n";
2416
2417                 # print extended diff header
2418                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2419         EXTENDED_HEADER:
2420                 foreach $patch_line (@diff_header) {
2421                         # match <path>
2422                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2423                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2424                                                         esc_path($from{'file'}));
2425                         }
2426                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2427                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2428                                                       esc_path($to{'file'}));
2429                         }
2430                         # match <mode>
2431                         if ($patch_line =~ m/\s(\d{6})$/) {
2432                                 $patch_line .= '<span class="info"> (' .
2433                                                file_type_long($1) .
2434                                                ')</span>';
2435                         }
2436                         # match <hash>
2437                         if ($patch_line =~ m/^index/) {
2438                                 my ($from_link, $to_link);
2439                                 if ($from{'href'}) {
2440                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2441                                                              substr($diffinfo->{'from_id'},0,7));
2442                                 } else {
2443                                         $from_link = '0' x 7;
2444                                 }
2445                                 if ($to{'href'}) {
2446                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2447                                                            substr($diffinfo->{'to_id'},0,7));
2448                                 } else {
2449                                         $to_link = '0' x 7;
2450                                 }
2451                                 #affirm {
2452                                 #       my ($from_hash, $to_hash) =
2453                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2454                                 #       my ($from_id, $to_id) =
2455                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2456                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2457                                 #} if DEBUG;
2458                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2459                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2460                         }
2461                         print $patch_line . "<br/>\n";
2462                 }
2463                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2464
2465                 # from-file/to-file diff header
2466                 $patch_line = $last_patch_line;
2467                 #assert($patch_line =~ m/^---/) if DEBUG;
2468                 if ($from{'href'}) {
2469                         $patch_line = '--- a/' .
2470                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2471                                               esc_path($from{'file'}));
2472                 }
2473                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2474
2475                 $patch_line = <$fd>;
2476                 #last PATCH unless $patch_line;
2477                 chomp $patch_line;
2478
2479                 #assert($patch_line =~ m/^+++/) if DEBUG;
2480                 if ($to{'href'}) {
2481                         $patch_line = '+++ b/' .
2482                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2483                                               esc_path($to{'file'}));
2484                 }
2485                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2486
2487                 # the patch itself
2488         LINE:
2489                 while ($patch_line = <$fd>) {
2490                         chomp $patch_line;
2491
2492                         next PATCH if ($patch_line =~ m/^diff /);
2493
2494                         print format_diff_line($patch_line, \%from, \%to);
2495                 }
2496
2497         } continue {
2498                 print "</div>\n"; # class="patch"
2499         }
2500
2501         print "</div>\n"; # class="patchset"
2502 }
2503
2504 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2505
2506 sub git_project_list_body {
2507         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2508
2509         my ($check_forks) = gitweb_check_feature('forks');
2510
2511         my @projects;
2512         foreach my $pr (@$projlist) {
2513                 my (@aa) = git_get_last_activity($pr->{'path'});
2514                 unless (@aa) {
2515                         next;
2516                 }
2517                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2518                 if (!defined $pr->{'descr'}) {
2519                         my $descr = git_get_project_description($pr->{'path'}) || "";
2520                         $pr->{'descr_long'} = to_utf8($descr);
2521                         $pr->{'descr'} = chop_str($descr, 25, 5);
2522                 }
2523                 if (!defined $pr->{'owner'}) {
2524                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2525                 }
2526                 if ($check_forks) {
2527                         my $pname = $pr->{'path'};
2528                         if (($pname =~ s/\.git$//) &&
2529                             ($pname !~ /\/$/) &&
2530                             (-d "$projectroot/$pname")) {
2531                                 $pr->{'forks'} = "-d $projectroot/$pname";
2532                         }
2533                         else {
2534                                 $pr->{'forks'} = 0;
2535                         }
2536                 }
2537                 push @projects, $pr;
2538         }
2539
2540         $order ||= "project";
2541         $from = 0 unless defined $from;
2542         $to = $#projects if (!defined $to || $#projects < $to);
2543
2544         print "<table class=\"project_list\">\n";
2545         unless ($no_header) {
2546                 print "<tr>\n";
2547                 if ($check_forks) {
2548                         print "<th></th>\n";
2549                 }
2550                 if ($order eq "project") {
2551                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2552                         print "<th>Project</th>\n";
2553                 } else {
2554                         print "<th>" .
2555                               $cgi->a({-href => href(project=>undef, order=>'project'),
2556                                        -class => "header"}, "Project") .
2557                               "</th>\n";
2558                 }
2559                 if ($order eq "descr") {
2560                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2561                         print "<th>Description</th>\n";
2562                 } else {
2563                         print "<th>" .
2564                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2565                                        -class => "header"}, "Description") .
2566                               "</th>\n";
2567                 }
2568                 if ($order eq "owner") {
2569                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2570                         print "<th>Owner</th>\n";
2571                 } else {
2572                         print "<th>" .
2573                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2574                                        -class => "header"}, "Owner") .
2575                               "</th>\n";
2576                 }
2577                 if ($order eq "age") {
2578                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2579                         print "<th>Last Change</th>\n";
2580                 } else {
2581                         print "<th>" .
2582                               $cgi->a({-href => href(project=>undef, order=>'age'),
2583                                        -class => "header"}, "Last Change") .
2584                               "</th>\n";
2585                 }
2586                 print "<th></th>\n" .
2587                       "</tr>\n";
2588         }
2589         my $alternate = 1;
2590         for (my $i = $from; $i <= $to; $i++) {
2591                 my $pr = $projects[$i];
2592                 if ($alternate) {
2593                         print "<tr class=\"dark\">\n";
2594                 } else {
2595                         print "<tr class=\"light\">\n";
2596                 }
2597                 $alternate ^= 1;
2598                 if ($check_forks) {
2599                         print "<td>";
2600                         if ($pr->{'forks'}) {
2601                                 print "<!-- $pr->{'forks'} -->\n";
2602                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2603                         }
2604                         print "</td>\n";
2605                 }
2606                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2607                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2608                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2609                                         -class => "list", -title => $pr->{'descr_long'}},
2610                                         esc_html($pr->{'descr'})) . "</td>\n" .
2611                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2612                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2613                       $pr->{'age_string'} . "</td>\n" .
2614                       "<td class=\"link\">" .
2615                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2616                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2617                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2618                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2619                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2620                       "</td>\n" .
2621                       "</tr>\n";
2622         }
2623         if (defined $extra) {
2624                 print "<tr>\n";
2625                 if ($check_forks) {
2626                         print "<td></td>\n";
2627                 }
2628                 print "<td colspan=\"5\">$extra</td>\n" .
2629                       "</tr>\n";
2630         }
2631         print "</table>\n";
2632 }
2633
2634 sub git_shortlog_body {
2635         # uses global variable $project
2636         my ($revlist, $from, $to, $refs, $extra) = @_;
2637
2638         $from = 0 unless defined $from;
2639         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2640
2641         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2642         my $alternate = 1;
2643         for (my $i = $from; $i <= $to; $i++) {
2644                 my $commit = $revlist->[$i];
2645                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2646                 my $ref = format_ref_marker($refs, $commit);
2647                 my %co = parse_commit($commit);
2648                 if ($alternate) {
2649                         print "<tr class=\"dark\">\n";
2650                 } else {
2651                         print "<tr class=\"light\">\n";
2652                 }
2653                 $alternate ^= 1;
2654                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2655                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2656                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2657                       "<td>";
2658                 print format_subject_html($co{'title'}, $co{'title_short'},
2659                                           href(action=>"commit", hash=>$commit), $ref);
2660                 print "</td>\n" .
2661                       "<td class=\"link\">" .
2662                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2663                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2664                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2665                 if (gitweb_have_snapshot()) {
2666                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2667                 }
2668                 print "</td>\n" .
2669                       "</tr>\n";
2670         }
2671         if (defined $extra) {
2672                 print "<tr>\n" .
2673                       "<td colspan=\"4\">$extra</td>\n" .
2674                       "</tr>\n";
2675         }
2676         print "</table>\n";
2677 }
2678
2679 sub git_history_body {
2680         # Warning: assumes constant type (blob or tree) during history
2681         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2682
2683         $from = 0 unless defined $from;
2684         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2685
2686         print "<table class=\"history\" cellspacing=\"0\">\n";
2687         my $alternate = 1;
2688         for (my $i = $from; $i <= $to; $i++) {
2689                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2690                         next;
2691                 }
2692
2693                 my $commit = $1;
2694                 my %co = parse_commit($commit);
2695                 if (!%co) {
2696                         next;
2697                 }
2698
2699                 my $ref = format_ref_marker($refs, $commit);
2700
2701                 if ($alternate) {
2702                         print "<tr class=\"dark\">\n";
2703                 } else {
2704                         print "<tr class=\"light\">\n";
2705                 }
2706                 $alternate ^= 1;
2707                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2708                       # shortlog uses      chop_str($co{'author_name'}, 10)
2709                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2710                       "<td>";
2711                 # originally git_history used chop_str($co{'title'}, 50)
2712                 print format_subject_html($co{'title'}, $co{'title_short'},
2713                                           href(action=>"commit", hash=>$commit), $ref);
2714                 print "</td>\n" .
2715                       "<td class=\"link\">" .
2716                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2717                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2718
2719                 if ($ftype eq 'blob') {
2720                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2721                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2722                         if (defined $blob_current && defined $blob_parent &&
2723                                         $blob_current ne $blob_parent) {
2724                                 print " | " .
2725                                         $cgi->a({-href => href(action=>"blobdiff",
2726                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2727                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2728                                                                file_name=>$file_name)},
2729                                                 "diff to current");
2730                         }
2731                 }
2732                 print "</td>\n" .
2733                       "</tr>\n";
2734         }
2735         if (defined $extra) {
2736                 print "<tr>\n" .
2737                       "<td colspan=\"4\">$extra</td>\n" .
2738                       "</tr>\n";
2739         }
2740         print "</table>\n";
2741 }
2742
2743 sub git_tags_body {
2744         # uses global variable $project
2745         my ($taglist, $from, $to, $extra) = @_;
2746         $from = 0 unless defined $from;
2747         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2748
2749         print "<table class=\"tags\" cellspacing=\"0\">\n";
2750         my $alternate = 1;
2751         for (my $i = $from; $i <= $to; $i++) {
2752                 my $entry = $taglist->[$i];
2753                 my %tag = %$entry;
2754                 my $comment = $tag{'subject'};
2755                 my $comment_short;
2756                 if (defined $comment) {
2757                         $comment_short = chop_str($comment, 30, 5);
2758                 }
2759                 if ($alternate) {
2760                         print "<tr class=\"dark\">\n";
2761                 } else {
2762                         print "<tr class=\"light\">\n";
2763                 }
2764                 $alternate ^= 1;
2765                 print "<td><i>$tag{'age'}</i></td>\n" .
2766                       "<td>" .
2767                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2768                                -class => "list name"}, esc_html($tag{'name'})) .
2769                       "</td>\n" .
2770                       "<td>";
2771                 if (defined $comment) {
2772                         print format_subject_html($comment, $comment_short,
2773                                                   href(action=>"tag", hash=>$tag{'id'}));
2774                 }
2775                 print "</td>\n" .
2776                       "<td class=\"selflink\">";
2777                 if ($tag{'type'} eq "tag") {
2778                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2779                 } else {
2780                         print "&nbsp;";
2781                 }
2782                 print "</td>\n" .
2783                       "<td class=\"link\">" . " | " .
2784                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2785                 if ($tag{'reftype'} eq "commit") {
2786                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2787                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2788                 } elsif ($tag{'reftype'} eq "blob") {
2789                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2790                 }
2791                 print "</td>\n" .
2792                       "</tr>";
2793         }
2794         if (defined $extra) {
2795                 print "<tr>\n" .
2796                       "<td colspan=\"5\">$extra</td>\n" .
2797                       "</tr>\n";
2798         }
2799         print "</table>\n";
2800 }
2801
2802 sub git_heads_body {
2803         # uses global variable $project
2804         my ($headlist, $head, $from, $to, $extra) = @_;
2805         $from = 0 unless defined $from;
2806         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2807
2808         print "<table class=\"heads\" cellspacing=\"0\">\n";
2809         my $alternate = 1;
2810         for (my $i = $from; $i <= $to; $i++) {
2811                 my $entry = $headlist->[$i];
2812                 my %ref = %$entry;
2813                 my $curr = $ref{'id'} eq $head;
2814                 if ($alternate) {
2815                         print "<tr class=\"dark\">\n";
2816                 } else {
2817                         print "<tr class=\"light\">\n";
2818                 }
2819                 $alternate ^= 1;
2820                 print "<td><i>$ref{'age'}</i></td>\n" .
2821                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2822                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2823                                -class => "list name"},esc_html($ref{'name'})) .
2824                       "</td>\n" .
2825                       "<td class=\"link\">" .
2826                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2827                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2828                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2829                       "</td>\n" .
2830                       "</tr>";
2831         }
2832         if (defined $extra) {
2833                 print "<tr>\n" .
2834                       "<td colspan=\"3\">$extra</td>\n" .
2835                       "</tr>\n";
2836         }
2837         print "</table>\n";
2838 }
2839
2840 ## ======================================================================
2841 ## ======================================================================
2842 ## actions
2843
2844 sub git_project_list {
2845         my $order = $cgi->param('o');
2846         if (defined $order && $order !~ m/project|descr|owner|age/) {
2847                 die_error(undef, "Unknown order parameter");
2848         }
2849
2850         my @list = git_get_projects_list();
2851         if (!@list) {
2852                 die_error(undef, "No projects found");
2853         }
2854
2855         git_header_html();
2856         if (-f $home_text) {
2857                 print "<div class=\"index_include\">\n";
2858                 open (my $fd, $home_text);
2859                 print <$fd>;
2860                 close $fd;
2861                 print "</div>\n";
2862         }
2863         git_project_list_body(\@list, $order);
2864         git_footer_html();
2865 }
2866
2867 sub git_forks {
2868         my $order = $cgi->param('o');
2869         if (defined $order && $order !~ m/project|descr|owner|age/) {
2870                 die_error(undef, "Unknown order parameter");
2871         }
2872
2873         my @list = git_get_projects_list($project);
2874         if (!@list) {
2875                 die_error(undef, "No forks found");
2876         }
2877
2878         git_header_html();
2879         git_print_page_nav('','');
2880         git_print_header_div('summary', "$project forks");
2881         git_project_list_body(\@list, $order);
2882         git_footer_html();
2883 }
2884
2885 sub git_project_index {
2886         my @projects = git_get_projects_list($project);
2887
2888         print $cgi->header(
2889                 -type => 'text/plain',
2890                 -charset => 'utf-8',
2891                 -content_disposition => 'inline; filename="index.aux"');
2892
2893         foreach my $pr (@projects) {
2894                 if (!exists $pr->{'owner'}) {
2895                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2896                 }
2897
2898                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2899                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2900                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2901                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2902                 $path  =~ s/ /\+/g;
2903                 $owner =~ s/ /\+/g;
2904
2905                 print "$path $owner\n";
2906         }
2907 }
2908
2909 sub git_summary {
2910         my $descr = git_get_project_description($project) || "none";
2911         my $head = git_get_head_hash($project);
2912         my %co = parse_commit($head);
2913         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2914
2915         my $owner = git_get_project_owner($project);
2916
2917         my $refs = git_get_references();
2918         # These get_*_list functions return one more to allow us to see if
2919         # there are more ...
2920         my @taglist  = git_get_tags_list(16);
2921         my @headlist = git_get_heads_list(16);
2922         my @forklist;
2923         my ($check_forks) = gitweb_check_feature('forks');
2924
2925         if ($check_forks) {
2926                 @forklist = git_get_projects_list($project);
2927         }
2928
2929         git_header_html();
2930         git_print_page_nav('summary','', $head);
2931
2932         print "<div class=\"title\">&nbsp;</div>\n";
2933         print "<table cellspacing=\"0\">\n" .
2934               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2935               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2936               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2937         # use per project git URL list in $projectroot/$project/cloneurl
2938         # or make project git URL from git base URL and project name
2939         my $url_tag = "URL";
2940         my @url_list = git_get_project_url_list($project);
2941         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2942         foreach my $git_url (@url_list) {
2943                 next unless $git_url;
2944                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2945                 $url_tag = "";
2946         }
2947         print "</table>\n";
2948
2949         if (-s "$projectroot/$project/README.html") {
2950                 if (open my $fd, "$projectroot/$project/README.html") {
2951                         print "<div class=\"title\">readme</div>\n";
2952                         print $_ while (<$fd>);
2953                         close $fd;
2954                 }
2955         }
2956
2957         # we need to request one more than 16 (0..15) to check if
2958         # those 16 are all
2959         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2960                 git_get_head_hash($project), "--"
2961                 or die_error(undef, "Open git-rev-list failed");
2962         my @revlist = map { chomp; $_ } <$fd>;
2963         close $fd;
2964         git_print_header_div('shortlog');
2965         git_shortlog_body(\@revlist, 0, 15, $refs,
2966                           $#revlist <=  15 ? undef :
2967                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2968
2969         if (@taglist) {
2970                 git_print_header_div('tags');
2971                 git_tags_body(\@taglist, 0, 15,
2972                               $#taglist <=  15 ? undef :
2973                               $cgi->a({-href => href(action=>"tags")}, "..."));
2974         }
2975
2976         if (@headlist) {
2977                 git_print_header_div('heads');
2978                 git_heads_body(\@headlist, $head, 0, 15,
2979                                $#headlist <= 15 ? undef :
2980                                $cgi->a({-href => href(action=>"heads")}, "..."));
2981         }
2982
2983         if (@forklist) {
2984                 git_print_header_div('forks');
2985                 git_project_list_body(\@forklist, undef, 0, 15,
2986                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2987                                       'noheader');
2988         }
2989
2990         git_footer_html();
2991 }
2992
2993 sub git_tag {
2994         my $head = git_get_head_hash($project);
2995         git_header_html();
2996         git_print_page_nav('','', $head,undef,$head);
2997         my %tag = parse_tag($hash);
2998         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2999         print "<div class=\"title_text\">\n" .
3000               "<table cellspacing=\"0\">\n" .
3001               "<tr>\n" .
3002               "<td>object</td>\n" .
3003               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3004                                $tag{'object'}) . "</td>\n" .
3005               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3006                                               $tag{'type'}) . "</td>\n" .
3007               "</tr>\n";
3008         if (defined($tag{'author'})) {
3009                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3010                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3011                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3012                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3013                         "</td></tr>\n";
3014         }
3015         print "</table>\n\n" .
3016               "</div>\n";
3017         print "<div class=\"page_body\">";
3018         my $comment = $tag{'comment'};
3019         foreach my $line (@$comment) {
3020                 chomp $line;
3021                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3022         }
3023         print "</div>\n";
3024         git_footer_html();
3025 }
3026
3027 sub git_blame2 {
3028         my $fd;
3029         my $ftype;
3030
3031         my ($have_blame) = gitweb_check_feature('blame');
3032         if (!$have_blame) {
3033                 die_error('403 Permission denied', "Permission denied");
3034         }
3035         die_error('404 Not Found', "File name not defined") if (!$file_name);
3036         $hash_base ||= git_get_head_hash($project);
3037         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3038         my %co = parse_commit($hash_base)
3039                 or die_error(undef, "Reading commit failed");
3040         if (!defined $hash) {
3041                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3042                         or die_error(undef, "Error looking up file");
3043         }
3044         $ftype = git_get_type($hash);
3045         if ($ftype !~ "blob") {
3046                 die_error("400 Bad Request", "Object is not a blob");
3047         }
3048         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3049               $file_name, $hash_base)
3050                 or die_error(undef, "Open git-blame failed");
3051         git_header_html();
3052         my $formats_nav =
3053                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3054                         "blob") .
3055                 " | " .
3056                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3057                         "history") .
3058                 " | " .
3059                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3060                         "HEAD");
3061         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3062         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3063         git_print_page_path($file_name, $ftype, $hash_base);
3064         my @rev_color = (qw(light2 dark2));
3065         my $num_colors = scalar(@rev_color);
3066         my $current_color = 0;
3067         my $last_rev;
3068         print <<HTML;
3069 <div class="page_body">
3070 <table class="blame">
3071 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3072 HTML
3073         my %metainfo = ();
3074         while (1) {
3075                 $_ = <$fd>;
3076                 last unless defined $_;
3077                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3078                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3079                 if (!exists $metainfo{$full_rev}) {
3080                         $metainfo{$full_rev} = {};
3081                 }
3082                 my $meta = $metainfo{$full_rev};
3083                 while (<$fd>) {
3084                         last if (s/^\t//);
3085                         if (/^(\S+) (.*)$/) {
3086                                 $meta->{$1} = $2;
3087                         }
3088                 }
3089                 my $data = $_;
3090                 chomp $data;
3091                 my $rev = substr($full_rev, 0, 8);
3092                 my $author = $meta->{'author'};
3093                 my %date = parse_date($meta->{'author-time'},
3094                                       $meta->{'author-tz'});
3095                 my $date = $date{'iso-tz'};
3096                 if ($group_size) {
3097                         $current_color = ++$current_color % $num_colors;
3098                 }
3099                 print "<tr class=\"$rev_color[$current_color]\">\n";
3100                 if ($group_size) {
3101                         print "<td class=\"sha1\"";
3102                         print " title=\"". esc_html($author) . ", $date\"";
3103                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3104                         print ">";
3105                         print $cgi->a({-href => href(action=>"commit",
3106                                                      hash=>$full_rev,
3107                                                      file_name=>$file_name)},
3108                                       esc_html($rev));
3109                         print "</td>\n";
3110                 }
3111                 my $blamed = href(action => 'blame',
3112                                   file_name => $meta->{'filename'},
3113                                   hash_base => $full_rev);
3114                 print "<td class=\"linenr\">";
3115                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3116                                 -id => "l$lineno",
3117                                 -class => "linenr" },
3118                               esc_html($lineno));
3119                 print "</td>";
3120                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3121                 print "</tr>\n";
3122         }
3123         print "</table>\n";
3124         print "</div>";
3125         close $fd
3126                 or print "Reading blob failed\n";
3127         git_footer_html();
3128 }
3129
3130 sub git_blame {
3131         my $fd;
3132
3133         my ($have_blame) = gitweb_check_feature('blame');
3134         if (!$have_blame) {
3135                 die_error('403 Permission denied', "Permission denied");
3136         }
3137         die_error('404 Not Found', "File name not defined") if (!$file_name);
3138         $hash_base ||= git_get_head_hash($project);
3139         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3140         my %co = parse_commit($hash_base)
3141                 or die_error(undef, "Reading commit failed");
3142         if (!defined $hash) {
3143                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3144                         or die_error(undef, "Error lookup file");
3145         }
3146         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3147                 or die_error(undef, "Open git-annotate failed");
3148         git_header_html();
3149         my $formats_nav =
3150                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3151                         "blob") .
3152                 " | " .
3153                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3154                         "history") .
3155                 " | " .
3156                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3157                         "HEAD");
3158         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3159         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3160         git_print_page_path($file_name, 'blob', $hash_base);
3161         print "<div class=\"page_body\">\n";
3162         print <<HTML;
3163 <table class="blame">
3164   <tr>
3165     <th>Commit</th>
3166     <th>Age</th>
3167     <th>Author</th>
3168     <th>Line</th>
3169     <th>Data</th>
3170   </tr>
3171 HTML
3172         my @line_class = (qw(light dark));
3173         my $line_class_len = scalar (@line_class);
3174         my $line_class_num = $#line_class;
3175         while (my $line = <$fd>) {
3176                 my $long_rev;
3177                 my $short_rev;
3178                 my $author;
3179                 my $time;
3180                 my $lineno;
3181                 my $data;
3182                 my $age;
3183                 my $age_str;
3184                 my $age_class;
3185
3186                 chomp $line;
3187                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3188
3189                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3190                         $long_rev = $1;
3191                         $author   = $2;
3192                         $time     = $3;
3193                         $lineno   = $4;
3194                         $data     = $5;
3195                 } else {
3196                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3197                         next;
3198                 }
3199                 $short_rev  = substr ($long_rev, 0, 8);
3200                 $age        = time () - $time;
3201                 $age_str    = age_string ($age);
3202                 $age_str    =~ s/ /&nbsp;/g;
3203                 $age_class  = age_class($age);
3204                 $author     = esc_html ($author);
3205                 $author     =~ s/ /&nbsp;/g;
3206
3207                 $data = untabify($data);
3208                 $data = esc_html ($data);
3209
3210                 print <<HTML;
3211   <tr class="$line_class[$line_class_num]">
3212     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3213     <td class="$age_class">$age_str</td>
3214     <td>$author</td>
3215     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3216     <td class="pre">$data</td>
3217   </tr>
3218 HTML
3219         } # while (my $line = <$fd>)
3220         print "</table>\n\n";
3221         close $fd
3222                 or print "Reading blob failed.\n";
3223         print "</div>";
3224         git_footer_html();
3225 }
3226
3227 sub git_tags {
3228         my $head = git_get_head_hash($project);
3229         git_header_html();
3230         git_print_page_nav('','', $head,undef,$head);
3231         git_print_header_div('summary', $project);
3232
3233         my @tagslist = git_get_tags_list();
3234         if (@tagslist) {
3235                 git_tags_body(\@tagslist);
3236         }
3237         git_footer_html();
3238 }
3239
3240 sub git_heads {
3241         my $head = git_get_head_hash($project);
3242         git_header_html();
3243         git_print_page_nav('','', $head,undef,$head);
3244         git_print_header_div('summary', $project);
3245
3246         my @headslist = git_get_heads_list();
3247         if (@headslist) {
3248                 git_heads_body(\@headslist, $head);
3249         }
3250         git_footer_html();
3251 }
3252
3253 sub git_blob_plain {
3254         my $expires;
3255
3256         if (!defined $hash) {
3257                 if (defined $file_name) {
3258                         my $base = $hash_base || git_get_head_hash($project);
3259                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3260                                 or die_error(undef, "Error lookup file");
3261                 } else {
3262                         die_error(undef, "No file name defined");
3263                 }
3264         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3265                 # blobs defined by non-textual hash id's can be cached
3266                 $expires = "+1d";
3267         }
3268
3269         my $type = shift;
3270         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3271                 or die_error(undef, "Couldn't cat $file_name, $hash");
3272
3273         $type ||= blob_mimetype($fd, $file_name);
3274
3275         # save as filename, even when no $file_name is given
3276         my $save_as = "$hash";
3277         if (defined $file_name) {
3278                 $save_as = $file_name;
3279         } elsif ($type =~ m/^text\//) {
3280                 $save_as .= '.txt';
3281         }
3282
3283         print $cgi->header(
3284                 -type => "$type",
3285                 -expires=>$expires,
3286                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3287         undef $/;
3288         binmode STDOUT, ':raw';
3289         print <$fd>;
3290         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3291         $/ = "\n";
3292         close $fd;
3293 }
3294
3295 sub git_blob {
3296         my $expires;
3297
3298         if (!defined $hash) {
3299                 if (defined $file_name) {
3300                         my $base = $hash_base || git_get_head_hash($project);
3301                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3302                                 or die_error(undef, "Error lookup file");
3303                 } else {
3304                         die_error(undef, "No file name defined");
3305                 }
3306         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3307                 # blobs defined by non-textual hash id's can be cached
3308                 $expires = "+1d";
3309         }
3310
3311         my ($have_blame) = gitweb_check_feature('blame');
3312         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3313                 or die_error(undef, "Couldn't cat $file_name, $hash");
3314         my $mimetype = blob_mimetype($fd, $file_name);
3315         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3316                 close $fd;
3317                 return git_blob_plain($mimetype);
3318         }
3319         # we can have blame only for text/* mimetype
3320         $have_blame &&= ($mimetype =~ m!^text/!);
3321
3322         git_header_html(undef, $expires);
3323         my $formats_nav = '';
3324         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3325                 if (defined $file_name) {
3326                         if ($have_blame) {
3327                                 $formats_nav .=
3328                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3329                                                                hash=>$hash, file_name=>$file_name)},
3330                                                 "blame") .
3331                                         " | ";
3332                         }
3333                         $formats_nav .=
3334                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3335                                                        hash=>$hash, file_name=>$file_name)},
3336                                         "history") .
3337                                 " | " .
3338                                 $cgi->a({-href => href(action=>"blob_plain",
3339                                                        hash=>$hash, file_name=>$file_name)},
3340                                         "raw") .
3341                                 " | " .
3342                                 $cgi->a({-href => href(action=>"blob",
3343                                                        hash_base=>"HEAD", file_name=>$file_name)},
3344                                         "HEAD");
3345                 } else {
3346                         $formats_nav .=
3347                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3348                 }
3349                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3350                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3351         } else {
3352                 print "<div class=\"page_nav\">\n" .
3353                       "<br/><br/></div>\n" .
3354                       "<div class=\"title\">$hash</div>\n";
3355         }
3356         git_print_page_path($file_name, "blob", $hash_base);
3357         print "<div class=\"page_body\">\n";
3358         if ($mimetype =~ m!^text/!) {
3359                 my $nr;
3360                 while (my $line = <$fd>) {
3361                         chomp $line;
3362                         $nr++;
3363                         $line = untabify($line);
3364                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3365                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3366                 }
3367         } elsif ($mimetype =~ m!^image/!) {
3368                 print qq!<img type="$mimetype"!;
3369                 if ($file_name) {
3370                         print qq! alt="$file_name" title="$file_name"!;
3371                 }
3372                 print qq! src="! .
3373                       href(action=>"blob_plain", hash=>$hash,
3374                            hash_base=>$hash_base, file_name=>$file_name) .
3375                       qq!" />\n!;
3376         }
3377         close $fd
3378                 or print "Reading blob failed.\n";
3379         print "</div>";
3380         git_footer_html();
3381 }
3382
3383 sub git_tree {
3384         my $have_snapshot = gitweb_have_snapshot();
3385
3386         if (!defined $hash_base) {
3387                 $hash_base = "HEAD";
3388         }
3389         if (!defined $hash) {
3390                 if (defined $file_name) {
3391                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3392                 } else {
3393                         $hash = $hash_base;
3394                 }
3395         }
3396         $/ = "\0";
3397         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3398                 or die_error(undef, "Open git-ls-tree failed");
3399         my @entries = map { chomp; $_ } <$fd>;
3400         close $fd or die_error(undef, "Reading tree failed");
3401         $/ = "\n";
3402
3403         my $refs = git_get_references();
3404         my $ref = format_ref_marker($refs, $hash_base);
3405         git_header_html();
3406         my $basedir = '';
3407         my ($have_blame) = gitweb_check_feature('blame');
3408         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3409                 my @views_nav = ();
3410                 if (defined $file_name) {
3411                         push @views_nav,
3412                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3413                                                        hash=>$hash, file_name=>$file_name)},
3414                                         "history"),
3415                                 $cgi->a({-href => href(action=>"tree",
3416                                                        hash_base=>"HEAD", file_name=>$file_name)},
3417                                         "HEAD"),
3418                 }
3419                 if ($have_snapshot) {
3420                         # FIXME: Should be available when we have no hash base as well.
3421                         push @views_nav,
3422                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3423                                         "snapshot");
3424                 }
3425                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3426                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3427         } else {
3428                 undef $hash_base;
3429                 print "<div class=\"page_nav\">\n";
3430                 print "<br/><br/></div>\n";
3431                 print "<div class=\"title\">$hash</div>\n";
3432         }
3433         if (defined $file_name) {
3434                 $basedir = $file_name;
3435                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3436                         $basedir .= '/';
3437                 }
3438         }
3439         git_print_page_path($file_name, 'tree', $hash_base);
3440         print "<div class=\"page_body\">\n";
3441         print "<table cellspacing=\"0\">\n";
3442         my $alternate = 1;
3443         # '..' (top directory) link if possible
3444         if (defined $hash_base &&
3445             defined $file_name && $file_name =~ m![^/]+$!) {
3446                 if ($alternate) {
3447                         print "<tr class=\"dark\">\n";
3448                 } else {
3449                         print "<tr class=\"light\">\n";
3450                 }
3451                 $alternate ^= 1;
3452
3453                 my $up = $file_name;
3454                 $up =~ s!/?[^/]+$!!;
3455                 undef $up unless $up;
3456                 # based on git_print_tree_entry
3457                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3458                 print '<td class="list">';
3459                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3460                                              file_name=>$up)},
3461                               "..");
3462                 print "</td>\n";
3463                 print "<td class=\"link\"></td>\n";
3464
3465                 print "</tr>\n";
3466         }
3467         foreach my $line (@entries) {
3468                 my %t = parse_ls_tree_line($line, -z => 1);
3469
3470                 if ($alternate) {
3471                         print "<tr class=\"dark\">\n";
3472                 } else {
3473                         print "<tr class=\"light\">\n";
3474                 }
3475                 $alternate ^= 1;
3476
3477                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3478
3479                 print "</tr>\n";
3480         }
3481         print "</table>\n" .
3482               "</div>";
3483         git_footer_html();
3484 }
3485
3486 sub git_snapshot {
3487         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3488         my $have_snapshot = (defined $ctype && defined $suffix);
3489         if (!$have_snapshot) {
3490                 die_error('403 Permission denied', "Permission denied");
3491         }
3492
3493         if (!defined $hash) {
3494                 $hash = git_get_head_hash($project);
3495         }
3496
3497         my $filename = basename($project) . "-$hash.tar.$suffix";
3498
3499         print $cgi->header(
3500                 -type => "application/$ctype",
3501                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3502                 -status => '200 OK');
3503
3504         my $git = git_cmd_str();
3505         my $name = $project;
3506         $name =~ s/\047/\047\\\047\047/g;
3507         open my $fd, "-|",
3508         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3509                 or die_error(undef, "Execute git-tar-tree failed.");
3510         binmode STDOUT, ':raw';
3511         print <$fd>;
3512         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3513         close $fd;
3514
3515 }
3516
3517 sub git_log {
3518         my $head = git_get_head_hash($project);
3519         if (!defined $hash) {
3520                 $hash = $head;
3521         }
3522         if (!defined $page) {
3523                 $page = 0;
3524         }
3525         my $refs = git_get_references();
3526
3527         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3528         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3529                 or die_error(undef, "Open git-rev-list failed");
3530         my @revlist = map { chomp; $_ } <$fd>;
3531         close $fd;
3532
3533         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3534
3535         git_header_html();
3536         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3537
3538         if (!@revlist) {
3539                 my %co = parse_commit($hash);
3540
3541                 git_print_header_div('summary', $project);
3542                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3543         }
3544         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3545                 my $commit = $revlist[$i];
3546                 my $ref = format_ref_marker($refs, $commit);
3547                 my %co = parse_commit($commit);
3548                 next if !%co;
3549                 my %ad = parse_date($co{'author_epoch'});
3550                 git_print_header_div('commit',
3551                                "<span class=\"age\">$co{'age_string'}</span>" .
3552                                esc_html($co{'title'}) . $ref,
3553                                $commit);
3554                 print "<div class=\"title_text\">\n" .
3555                       "<div class=\"log_link\">\n" .
3556                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3557                       " | " .
3558                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3559                       " | " .
3560                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3561                       "<br/>\n" .
3562                       "</div>\n" .
3563                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3564                       "</div>\n";
3565
3566                 print "<div class=\"log_body\">\n";
3567                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3568                 print "</div>\n";
3569         }
3570         git_footer_html();
3571 }
3572
3573 sub git_commit {
3574         $hash ||= $hash_base || "HEAD";
3575         my %co = parse_commit($hash);
3576         if (!%co) {
3577                 die_error(undef, "Unknown commit object");
3578         }
3579         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3580         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3581
3582         my $parent  = $co{'parent'};
3583         my $parents = $co{'parents'}; # listref
3584
3585         # we need to prepare $formats_nav before any parameter munging
3586         my $formats_nav;
3587         if (!defined $parent) {
3588                 # --root commitdiff
3589                 $formats_nav .= '(initial)';
3590         } elsif (@$parents == 1) {
3591                 # single parent commit
3592                 $formats_nav .=
3593                         '(parent: ' .
3594                         $cgi->a({-href => href(action=>"commit",
3595                                                hash=>$parent)},
3596                                 esc_html(substr($parent, 0, 7))) .
3597                         ')';
3598         } else {
3599                 # merge commit
3600                 $formats_nav .=
3601                         '(merge: ' .
3602                         join(' ', map {
3603                                 $cgi->a({-href => href(action=>"commitdiff",
3604                                                        hash=>$_)},
3605                                         esc_html(substr($_, 0, 7)));
3606                         } @$parents ) .
3607                         ')';
3608         }
3609
3610         if (!defined $parent) {
3611                 $parent = "--root";
3612         }
3613         my @difftree;
3614         if (@$parents <= 1) {
3615                 # difftree output is not printed for merges
3616                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3617                         @diff_opts, $parent, $hash, "--"
3618                                 or die_error(undef, "Open git-diff-tree failed");
3619                 @difftree = map { chomp; $_ } <$fd>;
3620                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3621         }
3622
3623         # non-textual hash id's can be cached
3624         my $expires;
3625         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3626                 $expires = "+1d";
3627         }
3628         my $refs = git_get_references();
3629         my $ref = format_ref_marker($refs, $co{'id'});
3630
3631         my $have_snapshot = gitweb_have_snapshot();
3632
3633         git_header_html(undef, $expires);
3634         git_print_page_nav('commit', '',
3635                            $hash, $co{'tree'}, $hash,
3636                            $formats_nav);
3637
3638         if (defined $co{'parent'}) {
3639                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3640         } else {
3641                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3642         }
3643         print "<div class=\"title_text\">\n" .
3644               "<table cellspacing=\"0\">\n";
3645         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3646               "<tr>" .
3647               "<td></td><td> $ad{'rfc2822'}";
3648         if ($ad{'hour_local'} < 6) {
3649                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3650                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3651         } else {
3652                 printf(" (%02d:%02d %s)",
3653                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3654         }
3655         print "</td>" .
3656               "</tr>\n";
3657         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3658         print "<tr><td></td><td> $cd{'rfc2822'}" .
3659               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3660               "</td></tr>\n";
3661         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3662         print "<tr>" .
3663               "<td>tree</td>" .
3664               "<td class=\"sha1\">" .
3665               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3666                        class => "list"}, $co{'tree'}) .
3667               "</td>" .
3668               "<td class=\"link\">" .
3669               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3670                       "tree");
3671         if ($have_snapshot) {
3672                 print " | " .
3673                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3674         }
3675         print "</td>" .
3676               "</tr>\n";
3677
3678         foreach my $par (@$parents) {
3679                 print "<tr>" .
3680                       "<td>parent</td>" .
3681                       "<td class=\"sha1\">" .
3682                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3683                                class => "list"}, $par) .
3684                       "</td>" .
3685                       "<td class=\"link\">" .
3686                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3687                       " | " .
3688                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3689                       "</td>" .
3690                       "</tr>\n";
3691         }
3692         print "</table>".
3693               "</div>\n";
3694
3695         print "<div class=\"page_body\">\n";
3696         git_print_log($co{'comment'});
3697         print "</div>\n";
3698
3699         if (@$parents <= 1) {
3700                 # do not output difftree/whatchanged for merges
3701                 git_difftree_body(\@difftree, $hash, $parent);
3702         }
3703
3704         git_footer_html();
3705 }
3706
3707 sub git_object {
3708         # object is defined by:
3709         # - hash or hash_base alone
3710         # - hash_base and file_name
3711         my $type;
3712
3713         # - hash or hash_base alone
3714         if ($hash || ($hash_base && !defined $file_name)) {
3715                 my $object_id = $hash || $hash_base;
3716
3717                 my $git_command = git_cmd_str();
3718                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3719                         or die_error('404 Not Found', "Object does not exist");
3720                 $type = <$fd>;
3721                 chomp $type;
3722                 close $fd
3723                         or die_error('404 Not Found', "Object does not exist");
3724
3725         # - hash_base and file_name
3726         } elsif ($hash_base && defined $file_name) {
3727                 $file_name =~ s,/+$,,;
3728
3729                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3730                         or die_error('404 Not Found', "Base object does not exist");
3731
3732                 # here errors should not hapen
3733                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3734                         or die_error(undef, "Open git-ls-tree failed");
3735                 my $line = <$fd>;
3736                 close $fd;
3737
3738                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3739                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3740                         die_error('404 Not Found', "File or directory for given base does not exist");
3741                 }
3742                 $type = $2;
3743                 $hash = $3;
3744         } else {
3745                 die_error('404 Not Found', "Not enough information to find object");
3746         }
3747
3748         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3749                                           hash=>$hash, hash_base=>$hash_base,
3750                                           file_name=>$file_name),
3751                              -status => '302 Found');
3752 }
3753
3754 sub git_blobdiff {
3755         my $format = shift || 'html';
3756
3757         my $fd;
3758         my @difftree;
3759         my %diffinfo;
3760         my $expires;
3761
3762         # preparing $fd and %diffinfo for git_patchset_body
3763         # new style URI
3764         if (defined $hash_base && defined $hash_parent_base) {
3765                 if (defined $file_name) {
3766                         # read raw output
3767                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3768                                 $hash_parent_base, $hash_base,
3769                                 "--", $file_name
3770                                 or die_error(undef, "Open git-diff-tree failed");
3771                         @difftree = map { chomp; $_ } <$fd>;
3772                         close $fd
3773                                 or die_error(undef, "Reading git-diff-tree failed");
3774                         @difftree
3775                                 or die_error('404 Not Found', "Blob diff not found");
3776
3777                 } elsif (defined $hash &&
3778                          $hash =~ /[0-9a-fA-F]{40}/) {
3779                         # try to find filename from $hash
3780
3781                         # read filtered raw output
3782                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3783                                 $hash_parent_base, $hash_base, "--"
3784                                 or die_error(undef, "Open git-diff-tree failed");
3785                         @difftree =
3786                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3787                                 # $hash == to_id
3788                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3789                                 map { chomp; $_ } <$fd>;
3790                         close $fd
3791                                 or die_error(undef, "Reading git-diff-tree failed");
3792                         @difftree
3793                                 or die_error('404 Not Found', "Blob diff not found");
3794
3795                 } else {
3796                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3797                 }
3798
3799                 if (@difftree > 1) {
3800                         die_error('404 Not Found', "Ambiguous blob diff specification");
3801                 }
3802
3803                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3804                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3805                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3806
3807                 $hash_parent ||= $diffinfo{'from_id'};
3808                 $hash        ||= $diffinfo{'to_id'};
3809
3810                 # non-textual hash id's can be cached
3811                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3812                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3813                         $expires = '+1d';
3814                 }
3815
3816                 # open patch output
3817                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3818                         '-p', $hash_parent_base, $hash_base,
3819                         "--", $file_name
3820                         or die_error(undef, "Open git-diff-tree failed");
3821         }
3822
3823         # old/legacy style URI
3824         if (!%diffinfo && # if new style URI failed
3825             defined $hash && defined $hash_parent) {
3826                 # fake git-diff-tree raw output
3827                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3828                 $diffinfo{'from_id'} = $hash_parent;
3829                 $diffinfo{'to_id'}   = $hash;
3830                 if (defined $file_name) {
3831                         if (defined $file_parent) {
3832                                 $diffinfo{'status'} = '2';
3833                                 $diffinfo{'from_file'} = $file_parent;
3834                                 $diffinfo{'to_file'}   = $file_name;
3835                         } else { # assume not renamed
3836                                 $diffinfo{'status'} = '1';
3837                                 $diffinfo{'from_file'} = $file_name;
3838                                 $diffinfo{'to_file'}   = $file_name;
3839                         }
3840                 } else { # no filename given
3841                         $diffinfo{'status'} = '2';
3842                         $diffinfo{'from_file'} = $hash_parent;
3843                         $diffinfo{'to_file'}   = $hash;
3844                 }
3845
3846                 # non-textual hash id's can be cached
3847                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3848                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3849                         $expires = '+1d';
3850                 }
3851
3852                 # open patch output
3853                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3854                         $hash_parent, $hash, "--"
3855                         or die_error(undef, "Open git-diff failed");
3856         } else  {
3857                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3858                         unless %diffinfo;
3859         }
3860
3861         # header
3862         if ($format eq 'html') {
3863                 my $formats_nav =
3864                         $cgi->a({-href => href(action=>"blobdiff_plain",
3865                                                hash=>$hash, hash_parent=>$hash_parent,
3866                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3867                                                file_name=>$file_name, file_parent=>$file_parent)},
3868                                 "raw");
3869                 git_header_html(undef, $expires);
3870                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3871                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3872                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3873                 } else {
3874                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3875                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3876                 }
3877                 if (defined $file_name) {
3878                         git_print_page_path($file_name, "blob", $hash_base);
3879                 } else {
3880                         print "<div class=\"page_path\"></div>\n";
3881                 }
3882
3883         } elsif ($format eq 'plain') {
3884                 print $cgi->header(
3885                         -type => 'text/plain',
3886                         -charset => 'utf-8',
3887                         -expires => $expires,
3888                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3889
3890                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3891
3892         } else {
3893                 die_error(undef, "Unknown blobdiff format");
3894         }
3895
3896         # patch
3897         if ($format eq 'html') {
3898                 print "<div class=\"page_body\">\n";
3899
3900                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3901                 close $fd;
3902
3903                 print "</div>\n"; # class="page_body"
3904                 git_footer_html();
3905
3906         } else {
3907                 while (my $line = <$fd>) {
3908                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3909                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3910
3911                         print $line;
3912
3913                         last if $line =~ m!^\+\+\+!;
3914                 }
3915                 local $/ = undef;
3916                 print <$fd>;
3917                 close $fd;
3918         }
3919 }
3920
3921 sub git_blobdiff_plain {
3922         git_blobdiff('plain');
3923 }
3924
3925 sub git_commitdiff {
3926         my $format = shift || 'html';
3927         $hash ||= $hash_base || "HEAD";
3928         my %co = parse_commit($hash);
3929         if (!%co) {
3930                 die_error(undef, "Unknown commit object");
3931         }
3932
3933         # we need to prepare $formats_nav before any parameter munging
3934         my $formats_nav;
3935         if ($format eq 'html') {
3936                 $formats_nav =
3937                         $cgi->a({-href => href(action=>"commitdiff_plain",
3938                                                hash=>$hash, hash_parent=>$hash_parent)},
3939                                 "raw");
3940
3941                 if (defined $hash_parent) {
3942                         # commitdiff with two commits given
3943                         my $hash_parent_short = $hash_parent;
3944                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3945                                 $hash_parent_short = substr($hash_parent, 0, 7);
3946                         }
3947                         $formats_nav .=
3948                                 ' (from: ' .
3949                                 $cgi->a({-href => href(action=>"commitdiff",
3950                                                        hash=>$hash_parent)},
3951                                         esc_html($hash_parent_short)) .
3952                                 ')';
3953                 } elsif (!$co{'parent'}) {
3954                         # --root commitdiff
3955                         $formats_nav .= ' (initial)';
3956                 } elsif (scalar @{$co{'parents'}} == 1) {
3957                         # single parent commit
3958                         $formats_nav .=
3959                                 ' (parent: ' .
3960                                 $cgi->a({-href => href(action=>"commitdiff",
3961                                                        hash=>$co{'parent'})},
3962                                         esc_html(substr($co{'parent'}, 0, 7))) .
3963                                 ')';
3964                 } else {
3965                         # merge commit
3966                         $formats_nav .=
3967                                 ' (merge: ' .
3968                                 join(' ', map {
3969                                         $cgi->a({-href => href(action=>"commitdiff",
3970                                                                hash=>$_)},
3971                                                 esc_html(substr($_, 0, 7)));
3972                                 } @{$co{'parents'}} ) .
3973                                 ')';
3974                 }
3975         }
3976
3977         if (!defined $hash_parent) {
3978                 $hash_parent = $co{'parent'} || '--root';
3979         }
3980
3981         # read commitdiff
3982         my $fd;
3983         my @difftree;
3984         if ($format eq 'html') {
3985                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3986                         "--no-commit-id", "--patch-with-raw", "--full-index",
3987                         $hash_parent, $hash, "--"
3988                         or die_error(undef, "Open git-diff-tree failed");
3989
3990                 while (my $line = <$fd>) {
3991                         chomp $line;
3992                         # empty line ends raw part of diff-tree output
3993                         last unless $line;
3994                         push @difftree, $line;
3995                 }
3996
3997         } elsif ($format eq 'plain') {
3998                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3999                         '-p', $hash_parent, $hash, "--"
4000                         or die_error(undef, "Open git-diff-tree failed");
4001
4002         } else {
4003                 die_error(undef, "Unknown commitdiff format");
4004         }
4005
4006         # non-textual hash id's can be cached
4007         my $expires;
4008         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4009                 $expires = "+1d";
4010         }
4011
4012         # write commit message
4013         if ($format eq 'html') {
4014                 my $refs = git_get_references();
4015                 my $ref = format_ref_marker($refs, $co{'id'});
4016
4017                 git_header_html(undef, $expires);
4018                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4019                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4020                 git_print_authorship(\%co);
4021                 print "<div class=\"page_body\">\n";
4022                 if (@{$co{'comment'}} > 1) {
4023                         print "<div class=\"log\">\n";
4024                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4025                         print "</div>\n"; # class="log"
4026                 }
4027
4028         } elsif ($format eq 'plain') {
4029                 my $refs = git_get_references("tags");
4030                 my $tagname = git_get_rev_name_tags($hash);
4031                 my $filename = basename($project) . "-$hash.patch";
4032
4033                 print $cgi->header(
4034                         -type => 'text/plain',
4035                         -charset => 'utf-8',
4036                         -expires => $expires,
4037                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4038                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4039                 print <<TEXT;
4040 From: $co{'author'}
4041 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4042 Subject: $co{'title'}
4043 TEXT
4044                 print "X-Git-Tag: $tagname\n" if $tagname;
4045                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4046
4047                 foreach my $line (@{$co{'comment'}}) {
4048                         print "$line\n";
4049                 }
4050                 print "---\n\n";
4051         }
4052
4053         # write patch
4054         if ($format eq 'html') {
4055                 git_difftree_body(\@difftree, $hash, $hash_parent);
4056                 print "<br/>\n";
4057
4058                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4059                 close $fd;
4060                 print "</div>\n"; # class="page_body"
4061                 git_footer_html();
4062
4063         } elsif ($format eq 'plain') {
4064                 local $/ = undef;
4065                 print <$fd>;
4066                 close $fd
4067                         or print "Reading git-diff-tree failed\n";
4068         }
4069 }
4070
4071 sub git_commitdiff_plain {
4072         git_commitdiff('plain');
4073 }
4074
4075 sub git_history {
4076         if (!defined $hash_base) {
4077                 $hash_base = git_get_head_hash($project);
4078         }
4079         if (!defined $page) {
4080                 $page = 0;
4081         }
4082         my $ftype;
4083         my %co = parse_commit($hash_base);
4084         if (!%co) {
4085                 die_error(undef, "Unknown commit object");
4086         }
4087
4088         my $refs = git_get_references();
4089         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4090
4091         if (!defined $hash && defined $file_name) {
4092                 $hash = git_get_hash_by_path($hash_base, $file_name);
4093         }
4094         if (defined $hash) {
4095                 $ftype = git_get_type($hash);
4096         }
4097
4098         open my $fd, "-|",
4099                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4100                         or die_error(undef, "Open git-rev-list-failed");
4101         my @revlist = map { chomp; $_ } <$fd>;
4102         close $fd
4103                 or die_error(undef, "Reading git-rev-list failed");
4104
4105         my $paging_nav = '';
4106         if ($page > 0) {
4107                 $paging_nav .=
4108                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4109                                                file_name=>$file_name)},
4110                                 "first");
4111                 $paging_nav .= " &sdot; " .
4112                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4113                                                file_name=>$file_name, page=>$page-1),
4114                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4115         } else {
4116                 $paging_nav .= "first";
4117                 $paging_nav .= " &sdot; prev";
4118         }
4119         if ($#revlist >= (100 * ($page+1)-1)) {
4120                 $paging_nav .= " &sdot; " .
4121                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4122                                                file_name=>$file_name, page=>$page+1),
4123                                  -accesskey => "n", -title => "Alt-n"}, "next");
4124         } else {
4125                 $paging_nav .= " &sdot; next";
4126         }
4127         my $next_link = '';
4128         if ($#revlist >= (100 * ($page+1)-1)) {
4129                 $next_link =
4130                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4131                                                file_name=>$file_name, page=>$page+1),
4132                                  -title => "Alt-n"}, "next");
4133         }
4134
4135         git_header_html();
4136         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4137         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4138         git_print_page_path($file_name, $ftype, $hash_base);
4139
4140         git_history_body(\@revlist, ($page * 100), $#revlist,
4141                          $refs, $hash_base, $ftype, $next_link);
4142
4143         git_footer_html();
4144 }
4145
4146 sub git_search {
4147         if (!defined $searchtext) {
4148                 die_error(undef, "Text field empty");
4149         }
4150         if (!defined $hash) {
4151                 $hash = git_get_head_hash($project);
4152         }
4153         my %co = parse_commit($hash);
4154         if (!%co) {
4155                 die_error(undef, "Unknown commit object");
4156         }
4157
4158         $searchtype ||= 'commit';
4159         if ($searchtype eq 'pickaxe') {
4160                 # pickaxe may take all resources of your box and run for several minutes
4161                 # with every query - so decide by yourself how public you make this feature
4162                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4163                 if (!$have_pickaxe) {
4164                         die_error('403 Permission denied', "Permission denied");
4165                 }
4166         }
4167
4168         git_header_html();
4169         git_print_page_nav('','', $hash,$co{'tree'},$hash);
4170         git_print_header_div('commit', esc_html($co{'title'}), $hash);
4171
4172         print "<table cellspacing=\"0\">\n";
4173         my $alternate = 1;
4174         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4175                 $/ = "\0";
4176                 open my $fd, "-|", git_cmd(), "rev-list",
4177                         "--header", "--parents", $hash, "--"
4178                         or next;
4179                 while (my $commit_text = <$fd>) {
4180                         if (!grep m/$searchtext/i, $commit_text) {
4181                                 next;
4182                         }
4183                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
4184                                 next;
4185                         }
4186                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
4187                                 next;
4188                         }
4189                         my @commit_lines = split "\n", $commit_text;
4190                         my %co = parse_commit(undef, \@commit_lines);
4191                         if (!%co) {
4192                                 next;
4193                         }
4194                         if ($alternate) {
4195                                 print "<tr class=\"dark\">\n";
4196                         } else {
4197                                 print "<tr class=\"light\">\n";
4198                         }
4199                         $alternate ^= 1;
4200                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4201                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4202                               "<td>" .
4203                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
4204                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4205                         my $comment = $co{'comment'};
4206                         foreach my $line (@$comment) {
4207                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
4208                                         my $lead = esc_html($1) || "";
4209                                         $lead = chop_str($lead, 30, 10);
4210                                         my $match = esc_html($2) || "";
4211                                         my $trail = esc_html($3) || "";
4212                                         $trail = chop_str($trail, 30, 10);
4213                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
4214                                         print chop_str($text, 80, 5) . "<br/>\n";
4215                                 }
4216                         }
4217                         print "</td>\n" .
4218                               "<td class=\"link\">" .
4219                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4220                               " | " .
4221                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4222                         print "</td>\n" .
4223                               "</tr>\n";
4224                 }
4225                 close $fd;
4226         }
4227
4228         if ($searchtype eq 'pickaxe') {
4229                 $/ = "\n";
4230                 my $git_command = git_cmd_str();
4231                 open my $fd, "-|", "$git_command rev-list $hash | " .
4232                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4233                 undef %co;
4234                 my @files;
4235                 while (my $line = <$fd>) {
4236                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4237                                 my %set;
4238                                 $set{'file'} = $6;
4239                                 $set{'from_id'} = $3;
4240                                 $set{'to_id'} = $4;
4241                                 $set{'id'} = $set{'to_id'};
4242                                 if ($set{'id'} =~ m/0{40}/) {
4243                                         $set{'id'} = $set{'from_id'};
4244                                 }
4245                                 if ($set{'id'} =~ m/0{40}/) {
4246                                         next;
4247                                 }
4248                                 push @files, \%set;
4249                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4250                                 if (%co) {
4251                                         if ($alternate) {
4252                                                 print "<tr class=\"dark\">\n";
4253                                         } else {
4254                                                 print "<tr class=\"light\">\n";
4255                                         }
4256                                         $alternate ^= 1;
4257                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4258                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4259                                               "<td>" .
4260                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4261                                                       -class => "list subject"},
4262                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4263                                         while (my $setref = shift @files) {
4264                                                 my %set = %$setref;
4265                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4266                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4267                                                               -class => "list"},
4268                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4269                                                       "<br/>\n";
4270                                         }
4271                                         print "</td>\n" .
4272                                               "<td class=\"link\">" .
4273                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4274                                               " | " .
4275                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4276                                         print "</td>\n" .
4277                                               "</tr>\n";
4278                                 }
4279                                 %co = parse_commit($1);
4280                         }
4281                 }
4282                 close $fd;
4283         }
4284         print "</table>\n";
4285         git_footer_html();
4286 }
4287
4288 sub git_search_help {
4289         git_header_html();
4290         git_print_page_nav('','', $hash,$hash,$hash);
4291         print <<EOT;
4292 <dl>
4293 <dt><b>commit</b></dt>
4294 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4295 <dt><b>author</b></dt>
4296 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4297 <dt><b>committer</b></dt>
4298 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4299 EOT
4300         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4301         if ($have_pickaxe) {
4302                 print <<EOT;
4303 <dt><b>pickaxe</b></dt>
4304 <dd>All commits that caused the string to appear or disappear from any file (changes that
4305 added, removed or "modified" the string) will be listed. This search can take a while and
4306 takes a lot of strain on the server, so please use it wisely.</dd>
4307 EOT
4308         }
4309         print "</dl>\n";
4310         git_footer_html();
4311 }
4312
4313 sub git_shortlog {
4314         my $head = git_get_head_hash($project);
4315         if (!defined $hash) {
4316                 $hash = $head;
4317         }
4318         if (!defined $page) {
4319                 $page = 0;
4320         }
4321         my $refs = git_get_references();
4322
4323         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4324         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4325                 or die_error(undef, "Open git-rev-list failed");
4326         my @revlist = map { chomp; $_ } <$fd>;
4327         close $fd;
4328
4329         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4330         my $next_link = '';
4331         if ($#revlist >= (100 * ($page+1)-1)) {
4332                 $next_link =
4333                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4334                                  -title => "Alt-n"}, "next");
4335         }
4336
4337
4338         git_header_html();
4339         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4340         git_print_header_div('summary', $project);
4341
4342         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4343
4344         git_footer_html();
4345 }
4346
4347 ## ......................................................................
4348 ## feeds (RSS, Atom; OPML)
4349
4350 sub git_feed {
4351         my $format = shift || 'atom';
4352         my ($have_blame) = gitweb_check_feature('blame');
4353
4354         # Atom: http://www.atomenabled.org/developers/syndication/
4355         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4356         if ($format ne 'rss' && $format ne 'atom') {
4357                 die_error(undef, "Unknown web feed format");
4358         }
4359
4360         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4361         my $head = $hash || 'HEAD';
4362         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4363                 $head, "--", (defined $file_name ? $file_name : ())
4364                 or die_error(undef, "Open git-rev-list failed");
4365         my @revlist = map { chomp; $_ } <$fd>;
4366         close $fd or die_error(undef, "Reading git-rev-list failed");
4367
4368         my %latest_commit;
4369         my %latest_date;
4370         my $content_type = "application/$format+xml";
4371         if (defined $cgi->http('HTTP_ACCEPT') &&
4372                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4373                 # browser (feed reader) prefers text/xml
4374                 $content_type = 'text/xml';
4375         }
4376         if (defined($revlist[0])) {
4377                 %latest_commit = parse_commit($revlist[0]);
4378                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4379                 print $cgi->header(
4380                         -type => $content_type,
4381                         -charset => 'utf-8',
4382                         -last_modified => $latest_date{'rfc2822'});
4383         } else {
4384                 print $cgi->header(
4385                         -type => $content_type,
4386                         -charset => 'utf-8');
4387         }
4388
4389         # Optimization: skip generating the body if client asks only
4390         # for Last-Modified date.
4391         return if ($cgi->request_method() eq 'HEAD');
4392
4393         # header variables
4394         my $title = "$site_name - $project/$action";
4395         my $feed_type = 'log';
4396         if (defined $hash) {
4397                 $title .= " - '$hash'";
4398                 $feed_type = 'branch log';
4399                 if (defined $file_name) {
4400                         $title .= " :: $file_name";
4401                         $feed_type = 'history';
4402                 }
4403         } elsif (defined $file_name) {
4404                 $title .= " - $file_name";
4405                 $feed_type = 'history';
4406         }
4407         $title .= " $feed_type";
4408         my $descr = git_get_project_description($project);
4409         if (defined $descr) {
4410                 $descr = esc_html($descr);
4411         } else {
4412                 $descr = "$project " .
4413                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4414                          " feed";
4415         }
4416         my $owner = git_get_project_owner($project);
4417         $owner = esc_html($owner);
4418
4419         #header
4420         my $alt_url;
4421         if (defined $file_name) {
4422                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4423         } elsif (defined $hash) {
4424                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4425         } else {
4426                 $alt_url = href(-full=>1, action=>"summary");
4427         }
4428         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4429         if ($format eq 'rss') {
4430                 print <<XML;
4431 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4432 <channel>
4433 XML
4434                 print "<title>$title</title>\n" .
4435                       "<link>$alt_url</link>\n" .
4436                       "<description>$descr</description>\n" .
4437                       "<language>en</language>\n";
4438         } elsif ($format eq 'atom') {
4439                 print <<XML;
4440 <feed xmlns="http://www.w3.org/2005/Atom">
4441 XML
4442                 print "<title>$title</title>\n" .
4443                       "<subtitle>$descr</subtitle>\n" .
4444                       '<link rel="alternate" type="text/html" href="' .
4445                       $alt_url . '" />' . "\n" .
4446                       '<link rel="self" type="' . $content_type . '" href="' .
4447                       $cgi->self_url() . '" />' . "\n" .
4448                       "<id>" . href(-full=>1) . "</id>\n" .
4449                       # use project owner for feed author
4450                       "<author><name>$owner</name></author>\n";
4451                 if (defined $favicon) {
4452                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4453                 }
4454                 if (defined $logo_url) {
4455                         # not twice as wide as tall: 72 x 27 pixels
4456                         print "<logo>" . esc_url($logo) . "</logo>\n";
4457                 }
4458                 if (! %latest_date) {
4459                         # dummy date to keep the feed valid until commits trickle in:
4460                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4461                 } else {
4462                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4463                 }
4464         }
4465
4466         # contents
4467         for (my $i = 0; $i <= $#revlist; $i++) {
4468                 my $commit = $revlist[$i];
4469                 my %co = parse_commit($commit);
4470                 # we read 150, we always show 30 and the ones more recent than 48 hours
4471                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4472                         last;
4473                 }
4474                 my %cd = parse_date($co{'author_epoch'});
4475
4476                 # get list of changed files
4477                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4478                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4479                         or next;
4480                 my @difftree = map { chomp; $_ } <$fd>;
4481                 close $fd
4482                         or next;
4483
4484                 # print element (entry, item)
4485                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4486                 if ($format eq 'rss') {
4487                         print "<item>\n" .
4488                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4489                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4490                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4491                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4492                               "<link>$co_url</link>\n" .
4493                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4494                               "<content:encoded>" .
4495                               "<![CDATA[\n";
4496                 } elsif ($format eq 'atom') {
4497                         print "<entry>\n" .
4498                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4499                               "<updated>$cd{'iso-8601'}</updated>\n" .
4500                               "<author>\n" .
4501                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4502                         if ($co{'author_email'}) {
4503                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4504                         }
4505                         print "</author>\n" .
4506                               # use committer for contributor
4507                               "<contributor>\n" .
4508                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4509                         if ($co{'committer_email'}) {
4510                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4511                         }
4512                         print "</contributor>\n" .
4513                               "<published>$cd{'iso-8601'}</published>\n" .
4514                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4515                               "<id>$co_url</id>\n" .
4516                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4517                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4518                 }
4519                 my $comment = $co{'comment'};
4520                 print "<pre>\n";
4521                 foreach my $line (@$comment) {
4522                         $line = esc_html($line);
4523                         print "$line\n";
4524                 }
4525                 print "</pre><ul>\n";
4526                 foreach my $difftree_line (@difftree) {
4527                         my %difftree = parse_difftree_raw_line($difftree_line);
4528                         next if !$difftree{'from_id'};
4529
4530                         my $file = $difftree{'file'} || $difftree{'to_file'};
4531
4532                         print "<li>" .
4533                               "[" .
4534                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4535                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4536                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4537                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4538                                       -title => "diff"}, 'D');
4539                         if ($have_blame) {
4540                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4541                                                              file_name=>$file, hash_base=>$commit),
4542                                               -title => "blame"}, 'B');
4543                         }
4544                         # if this is not a feed of a file history
4545                         if (!defined $file_name || $file_name ne $file) {
4546                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4547                                                              file_name=>$file, hash=>$commit),
4548                                               -title => "history"}, 'H');
4549                         }
4550                         $file = esc_path($file);
4551                         print "] ".
4552                               "$file</li>\n";
4553                 }
4554                 if ($format eq 'rss') {
4555                         print "</ul>]]>\n" .
4556                               "</content:encoded>\n" .
4557                               "</item>\n";
4558                 } elsif ($format eq 'atom') {
4559                         print "</ul>\n</div>\n" .
4560                               "</content>\n" .
4561                               "</entry>\n";
4562                 }
4563         }
4564
4565         # end of feed
4566         if ($format eq 'rss') {
4567                 print "</channel>\n</rss>\n";
4568         }       elsif ($format eq 'atom') {
4569                 print "</feed>\n";
4570         }
4571 }
4572
4573 sub git_rss {
4574         git_feed('rss');
4575 }
4576
4577 sub git_atom {
4578         git_feed('atom');
4579 }
4580
4581 sub git_opml {
4582         my @list = git_get_projects_list();
4583
4584         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4585         print <<XML;
4586 <?xml version="1.0" encoding="utf-8"?>
4587 <opml version="1.0">
4588 <head>
4589   <title>$site_name OPML Export</title>
4590 </head>
4591 <body>
4592 <outline text="git RSS feeds">
4593 XML
4594
4595         foreach my $pr (@list) {
4596                 my %proj = %$pr;
4597                 my $head = git_get_head_hash($proj{'path'});
4598                 if (!defined $head) {
4599                         next;
4600                 }
4601                 $git_dir = "$projectroot/$proj{'path'}";
4602                 my %co = parse_commit($head);
4603                 if (!%co) {
4604                         next;
4605                 }
4606
4607                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4608                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4609                 my $html = "$my_url?p=$proj{'path'};a=summary";
4610                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4611         }
4612         print <<XML;
4613 </outline>
4614 </body>
4615 </opml>
4616 XML
4617 }