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{'blame'}{'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         "search" => \&git_search,
 429         "search_help" => \&git_search_help,
 430         "shortlog" => \&git_shortlog,
 431         "summary" => \&git_summary,
 432         "tag" => \&git_tag,
 433         "tags" => \&git_tags,
 434         "tree" => \&git_tree,
 435         "snapshot" => \&git_snapshot,
 436         # those below don't need $project
 437         "opml" => \&git_opml,
 438         "project_list" => \&git_project_list,
 439         "project_index" => \&git_project_index,
 440 );
 441
 442 if (defined $project) {
 443         $action ||= 'summary';
 444 } else {
 445         $action ||= 'project_list';
 446 }
 447 if (!defined($actions{$action})) {
 448         die_error(undef, "Unknown action");
 449 }
 450 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 451     !$project) {
 452         die_error(undef, "Project needed");
 453 }
 454 $actions{$action}->();
 455 exit;
 456
 457 ## ======================================================================
 458 ## action links
 459
 460 sub href(%) {
 461         my %params = @_;
 462         my $href = $my_uri;
 463
 464         # XXX: Warning: If you touch this, check the search form for updating,
 465         # too.
 466
 467         my @mapping = (
 468                 project => "p",
 469                 action => "a",
 470                 file_name => "f",
 471                 file_parent => "fp",
 472                 hash => "h",
 473                 hash_parent => "hp",
 474                 hash_base => "hb",
 475                 hash_parent_base => "hpb",
 476                 page => "pg",
 477                 order => "o",
 478                 searchtext => "s",
 479                 searchtype => "st",
 480         );
 481         my %mapping = @mapping;
 482
 483         $params{'project'} = $project unless exists $params{'project'};
 484
 485         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 486         if ($use_pathinfo) {
 487                 # use PATH_INFO for project name
 488                 $href .= "/$params{'project'}" if defined $params{'project'};
 489                 delete $params{'project'};
 490
 491                 # Summary just uses the project path URL
 492                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 493                         delete $params{'action'};
 494                 }
 495         }
 496
 497         # now encode the parameters explicitly
 498         my @result = ();
 499         for (my $i = 0; $i < @mapping; $i += 2) {
 500                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 501                 if (defined $params{$name}) {
 502                         push @result, $symbol . "=" . esc_param($params{$name});
 503                 }
 504         }
 505         $href .= "?" . join(';', @result) if scalar @result;
 506
 507         return $href;
 508 }
 509
 510
 511 ## ======================================================================
 512 ## validation, quoting/unquoting and escaping
 513
 514 sub validate_pathname {
 515         my $input = shift || return undef;
 516
 517         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 518         # at the beginning, at the end, and between slashes.
 519         # also this catches doubled slashes
 520         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 521                 return undef;
 522         }
 523         # no null characters
 524         if ($input =~ m!\0!) {
 525                 return undef;
 526         }
 527         return $input;
 528 }
 529
 530 sub validate_refname {
 531         my $input = shift || return undef;
 532
 533         # textual hashes are O.K.
 534         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 535                 return $input;
 536         }
 537         # it must be correct pathname
 538         $input = validate_pathname($input)
 539                 or return undef;
 540         # restrictions on ref name according to git-check-ref-format
 541         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 542                 return undef;
 543         }
 544         return $input;
 545 }
 546
 547 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 548 sub to_utf8 {
 549         my $str = shift;
 550         return decode("utf8", $str, Encode::FB_DEFAULT);
 551 }
 552
 553 # quote unsafe chars, but keep the slash, even when it's not
 554 # correct, but quoted slashes look too horrible in bookmarks
 555 sub esc_param {
 556         my $str = shift;
 557         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 558         $str =~ s/\+/%2B/g;
 559         $str =~ s/ /\+/g;
 560         return $str;
 561 }
 562
 563 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 564 sub esc_url {
 565         my $str = shift;
 566         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 567         $str =~ s/\+/%2B/g;
 568         $str =~ s/ /\+/g;
 569         return $str;
 570 }
 571
 572 # replace invalid utf8 character with SUBSTITUTION sequence
 573 sub esc_html ($;%) {
 574         my $str = shift;
 575         my %opts = @_;
 576
 577         $str = to_utf8($str);
 578         $str = escapeHTML($str);
 579         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 580         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 581         if ($opts{'-nbsp'}) {
 582                 $str =~ s/ /&nbsp;/g;
 583         }
 584         return $str;
 585 }
 586
 587 # Make control characterss "printable".
 588 sub quot_cec {
 589         my $cntrl = shift;
 590         my %es = ( # character escape codes, aka escape sequences
 591                    "\t" => '\t',   # tab            (HT)
 592                    "\n" => '\n',   # line feed      (LF)
 593                    "\r" => '\r',   # carrige return (CR)
 594                    "\f" => '\f',   # form feed      (FF)
 595                    "\b" => '\b',   # backspace      (BS)
 596                    "\a" => '\a',   # alarm (bell)   (BEL)
 597                    "\e" => '\e',   # escape         (ESC)
 598                    "\013" => '\v', # vertical tab   (VT)
 599                    "\000" => '\0', # nul character  (NUL)
 600                    );
 601         my $chr = ( (exists $es{$cntrl})
 602                     ? $es{$cntrl}
 603                     : sprintf('\%03o', ord($cntrl)) );
 604         return "<span class=\"cntrl\">$chr</span>";
 605 }
 606
 607 # Alternatively use unicode control pictures codepoints.
 608 sub quot_upr {
 609         my $cntrl = shift;
 610         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 611         return "<span class=\"cntrl\">$chr</span>";
 612 }
 613
 614 # quote control characters and escape filename to HTML
 615 sub esc_path {
 616         my $str = shift;
 617
 618         $str = esc_html($str);
 619         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 620         return $str;
 621 }
 622
 623 # git may return quoted and escaped filenames
 624 sub unquote {
 625         my $str = shift;
 626
 627         sub unq {
 628                 my $seq = shift;
 629                 my %es = ( # character escape codes, aka escape sequences
 630                         't' => "\t",   # tab            (HT, TAB)
 631                         'n' => "\n",   # newline        (NL)
 632                         'r' => "\r",   # return         (CR)
 633                         'f' => "\f",   # form feed      (FF)
 634                         'b' => "\b",   # backspace      (BS)
 635                         'a' => "\a",   # alarm (bell)   (BEL)
 636                         'e' => "\e",   # escape         (ESC)
 637                         'v' => "\013", # vertical tab   (VT)
 638                 );
 639
 640                 if ($seq =~ m/^[0-7]{1,3}$/) {
 641                         # octal char sequence
 642                         return chr(oct($seq));
 643                 } elsif (exists $es{$seq}) {
 644                         # C escape sequence, aka character escape code
 645                         return $es{$seq}
 646                 }
 647                 # quoted ordinary character
 648                 return $seq;
 649         }
 650
 651         if ($str =~ m/^"(.*)"$/) {
 652                 # needs unquoting
 653                 $str = $1;
 654                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 655         }
 656         return $str;
 657 }
 658
 659 # escape tabs (convert tabs to spaces)
 660 sub untabify {
 661         my $line = shift;
 662
 663         while ((my $pos = index($line, "\t")) != -1) {
 664                 if (my $count = (8 - ($pos % 8))) {
 665                         my $spaces = ' ' x $count;
 666                         $line =~ s/\t/$spaces/;
 667                 }
 668         }
 669
 670         return $line;
 671 }
 672
 673 sub project_in_list {
 674         my $project = shift;
 675         my @list = git_get_projects_list();
 676         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 677 }
 678
 679 ## ----------------------------------------------------------------------
 680 ## HTML aware string manipulation
 681
 682 sub chop_str {
 683         my $str = shift;
 684         my $len = shift;
 685         my $add_len = shift || 10;
 686
 687         # allow only $len chars, but don't cut a word if it would fit in $add_len
 688         # if it doesn't fit, cut it if it's still longer than the dots we would add
 689         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 690         my $body = $1;
 691         my $tail = $2;
 692         if (length($tail) > 4) {
 693                 $tail = " ...";
 694                 $body =~ s/&[^;]*$//; # remove chopped character entities
 695         }
 696         return "$body$tail";
 697 }
 698
 699 ## ----------------------------------------------------------------------
 700 ## functions returning short strings
 701
 702 # CSS class for given age value (in seconds)
 703 sub age_class {
 704         my $age = shift;
 705
 706         if ($age < 60*60*2) {
 707                 return "age0";
 708         } elsif ($age < 60*60*24*2) {
 709                 return "age1";
 710         } else {
 711                 return "age2";
 712         }
 713 }
 714
 715 # convert age in seconds to "nn units ago" string
 716 sub age_string {
 717         my $age = shift;
 718         my $age_str;
 719
 720         if ($age > 60*60*24*365*2) {
 721                 $age_str = (int $age/60/60/24/365);
 722                 $age_str .= " years ago";
 723         } elsif ($age > 60*60*24*(365/12)*2) {
 724                 $age_str = int $age/60/60/24/(365/12);
 725                 $age_str .= " months ago";
 726         } elsif ($age > 60*60*24*7*2) {
 727                 $age_str = int $age/60/60/24/7;
 728                 $age_str .= " weeks ago";
 729         } elsif ($age > 60*60*24*2) {
 730                 $age_str = int $age/60/60/24;
 731                 $age_str .= " days ago";
 732         } elsif ($age > 60*60*2) {
 733                 $age_str = int $age/60/60;
 734                 $age_str .= " hours ago";
 735         } elsif ($age > 60*2) {
 736                 $age_str = int $age/60;
 737                 $age_str .= " min ago";
 738         } elsif ($age > 2) {
 739                 $age_str = int $age;
 740                 $age_str .= " sec ago";
 741         } else {
 742                 $age_str .= " right now";
 743         }
 744         return $age_str;
 745 }
 746
 747 # convert file mode in octal to symbolic file mode string
 748 sub mode_str {
 749         my $mode = oct shift;
 750
 751         if (S_ISDIR($mode & S_IFMT)) {
 752                 return 'drwxr-xr-x';
 753         } elsif (S_ISLNK($mode)) {
 754                 return 'lrwxrwxrwx';
 755         } elsif (S_ISREG($mode)) {
 756                 # git cares only about the executable bit
 757                 if ($mode & S_IXUSR) {
 758                         return '-rwxr-xr-x';
 759                 } else {
 760                         return '-rw-r--r--';
 761                 };
 762         } else {
 763                 return '----------';
 764         }
 765 }
 766
 767 # convert file mode in octal to file type string
 768 sub file_type {
 769         my $mode = shift;
 770
 771         if ($mode !~ m/^[0-7]+$/) {
 772                 return $mode;
 773         } else {
 774                 $mode = oct $mode;
 775         }
 776
 777         if (S_ISDIR($mode & S_IFMT)) {
 778                 return "directory";
 779         } elsif (S_ISLNK($mode)) {
 780                 return "symlink";
 781         } elsif (S_ISREG($mode)) {
 782                 return "file";
 783         } else {
 784                 return "unknown";
 785         }
 786 }
 787
 788 # convert file mode in octal to file type description string
 789 sub file_type_long {
 790         my $mode = shift;
 791
 792         if ($mode !~ m/^[0-7]+$/) {
 793                 return $mode;
 794         } else {
 795                 $mode = oct $mode;
 796         }
 797
 798         if (S_ISDIR($mode & S_IFMT)) {
 799                 return "directory";
 800         } elsif (S_ISLNK($mode)) {
 801                 return "symlink";
 802         } elsif (S_ISREG($mode)) {
 803                 if ($mode & S_IXUSR) {
 804                         return "executable";
 805                 } else {
 806                         return "file";
 807                 };
 808         } else {
 809                 return "unknown";
 810         }
 811 }
 812
 813
 814 ## ----------------------------------------------------------------------
 815 ## functions returning short HTML fragments, or transforming HTML fragments
 816 ## which don't beling to other sections
 817
 818 # format line of commit message or tag comment
 819 sub format_log_line_html {
 820         my $line = shift;
 821
 822         $line = esc_html($line);
 823         $line =~ s/ /&nbsp;/g;
 824         if ($line =~ m/([0-9a-fA-F]{40})/) {
 825                 my $hash_text = $1;
 826                 if (git_get_type($hash_text) eq "commit") {
 827                         my $link =
 828                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 829                                         -class => "text"}, $hash_text);
 830                         $line =~ s/$hash_text/$link/;
 831                 }
 832         }
 833         return $line;
 834 }
 835
 836 # format marker of refs pointing to given object
 837 sub format_ref_marker {
 838         my ($refs, $id) = @_;
 839         my $markers = '';
 840
 841         if (defined $refs->{$id}) {
 842                 foreach my $ref (@{$refs->{$id}}) {
 843                         my ($type, $name) = qw();
 844                         # e.g. tags/v2.6.11 or heads/next
 845                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 846                                 $type = $1;
 847                                 $name = $2;
 848                         } else {
 849                                 $type = "ref";
 850                                 $name = $ref;
 851                         }
 852
 853                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 854                 }
 855         }
 856
 857         if ($markers) {
 858                 return ' <span class="refs">'. $markers . '</span>';
 859         } else {
 860                 return "";
 861         }
 862 }
 863
 864 # format, perhaps shortened and with markers, title line
 865 sub format_subject_html {
 866         my ($long, $short, $href, $extra) = @_;
 867         $extra = '' unless defined($extra);
 868
 869         if (length($short) < length($long)) {
 870                 return $cgi->a({-href => $href, -class => "list subject",
 871                                 -title => to_utf8($long)},
 872                        esc_html($short) . $extra);
 873         } else {
 874                 return $cgi->a({-href => $href, -class => "list subject"},
 875                        esc_html($long)  . $extra);
 876         }
 877 }
 878
 879 sub format_diff_line {
 880         my $line = shift;
 881         my $char = substr($line, 0, 1);
 882         my $diff_class = "";
 883
 884         chomp $line;
 885
 886         if ($char eq '+') {
 887                 $diff_class = " add";
 888         } elsif ($char eq "-") {
 889                 $diff_class = " rem";
 890         } elsif ($char eq "@") {
 891                 $diff_class = " chunk_header";
 892         } elsif ($char eq "\\") {
 893                 $diff_class = " incomplete";
 894         }
 895         $line = untabify($line);
 896         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 897 }
 898
 899 ## ----------------------------------------------------------------------
 900 ## git utility subroutines, invoking git commands
 901
 902 # returns path to the core git executable and the --git-dir parameter as list
 903 sub git_cmd {
 904         return $GIT, '--git-dir='.$git_dir;
 905 }
 906
 907 # returns path to the core git executable and the --git-dir parameter as string
 908 sub git_cmd_str {
 909         return join(' ', git_cmd());
 910 }
 911
 912 # get HEAD ref of given project as hash
 913 sub git_get_head_hash {
 914         my $project = shift;
 915         my $o_git_dir = $git_dir;
 916         my $retval = undef;
 917         $git_dir = "$projectroot/$project";
 918         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 919                 my $head = <$fd>;
 920                 close $fd;
 921                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 922                         $retval = $1;
 923                 }
 924         }
 925         if (defined $o_git_dir) {
 926                 $git_dir = $o_git_dir;
 927         }
 928         return $retval;
 929 }
 930
 931 # get type of given object
 932 sub git_get_type {
 933         my $hash = shift;
 934
 935         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 936         my $type = <$fd>;
 937         close $fd or return;
 938         chomp $type;
 939         return $type;
 940 }
 941
 942 sub git_get_project_config {
 943         my ($key, $type) = @_;
 944
 945         return unless ($key);
 946         $key =~ s/^gitweb\.//;
 947         return if ($key =~ m/\W/);
 948
 949         my @x = (git_cmd(), 'repo-config');
 950         if (defined $type) { push @x, $type; }
 951         push @x, "--get";
 952         push @x, "gitweb.$key";
 953         my $val = qx(@x);
 954         chomp $val;
 955         return ($val);
 956 }
 957
 958 # get hash of given path at given ref
 959 sub git_get_hash_by_path {
 960         my $base = shift;
 961         my $path = shift || return undef;
 962         my $type = shift;
 963
 964         $path =~ s,/+$,,;
 965
 966         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 967                 or die_error(undef, "Open git-ls-tree failed");
 968         my $line = <$fd>;
 969         close $fd or return undef;
 970
 971         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 972         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 973         if (defined $type && $type ne $2) {
 974                 # type doesn't match
 975                 return undef;
 976         }
 977         return $3;
 978 }
 979
 980 ## ......................................................................
 981 ## git utility functions, directly accessing git repository
 982
 983 sub git_get_project_description {
 984         my $path = shift;
 985
 986         open my $fd, "$projectroot/$path/description" or return undef;
 987         my $descr = <$fd>;
 988         close $fd;
 989         chomp $descr;
 990         return $descr;
 991 }
 992
 993 sub git_get_project_url_list {
 994         my $path = shift;
 995
 996         open my $fd, "$projectroot/$path/cloneurl" or return;
 997         my @git_project_url_list = map { chomp; $_ } <$fd>;
 998         close $fd;
 999
1000         return wantarray ? @git_project_url_list : \@git_project_url_list;
1001 }
1002
1003 sub git_get_projects_list {
1004         my ($filter) = @_;
1005         my @list;
1006
1007         $filter ||= '';
1008         $filter =~ s/\.git$//;
1009
1010         if (-d $projects_list) {
1011                 # search in directory
1012                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1013                 # remove the trailing "/"
1014                 $dir =~ s!/+$!!;
1015                 my $pfxlen = length("$dir");
1016
1017                 my ($check_forks) = gitweb_check_feature('forks');
1018
1019                 File::Find::find({
1020                         follow_fast => 1, # follow symbolic links
1021                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1022                         wanted => sub {
1023                                 # skip project-list toplevel, if we get it.
1024                                 return if (m!^[/.]$!);
1025                                 # only directories can be git repositories
1026                                 return unless (-d $_);
1027
1028                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1029                                 # we check related file in $projectroot
1030                                 if ($check_forks and $subdir =~ m#/.#) {
1031                                         $File::Find::prune = 1;
1032                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1033                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1034                                         $File::Find::prune = 1;
1035                                 }
1036                         },
1037                 }, "$dir");
1038
1039         } elsif (-f $projects_list) {
1040                 # read from file(url-encoded):
1041                 # 'git%2Fgit.git Linus+Torvalds'
1042                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1043                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1044                 open my ($fd), $projects_list or return;
1045                 while (my $line = <$fd>) {
1046                         chomp $line;
1047                         my ($path, $owner) = split ' ', $line;
1048                         $path = unescape($path);
1049                         $owner = unescape($owner);
1050                         if (!defined $path) {
1051                                 next;
1052                         }
1053                         if ($filter ne '') {
1054                                 # looking for forks;
1055                                 my $pfx = substr($path, 0, length($filter));
1056                                 if ($pfx ne $filter) {
1057                                         next;
1058                                 }
1059                                 my $sfx = substr($path, length($filter));
1060                                 if ($sfx !~ /^\/.*\.git$/) {
1061                                         next;
1062                                 }
1063                         }
1064                         if (check_export_ok("$projectroot/$path")) {
1065                                 my $pr = {
1066                                         path => $path,
1067                                         owner => to_utf8($owner),
1068                                 };
1069                                 push @list, $pr
1070                         }
1071                 }
1072                 close $fd;
1073         }
1074         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1075         return @list;
1076 }
1077
1078 sub git_get_project_owner {
1079         my $project = shift;
1080         my $owner;
1081
1082         return undef unless $project;
1083
1084         # read from file (url-encoded):
1085         # 'git%2Fgit.git Linus+Torvalds'
1086         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1087         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1088         if (-f $projects_list) {
1089                 open (my $fd , $projects_list);
1090                 while (my $line = <$fd>) {
1091                         chomp $line;
1092                         my ($pr, $ow) = split ' ', $line;
1093                         $pr = unescape($pr);
1094                         $ow = unescape($ow);
1095                         if ($pr eq $project) {
1096                                 $owner = to_utf8($ow);
1097                                 last;
1098                         }
1099                 }
1100                 close $fd;
1101         }
1102         if (!defined $owner) {
1103                 $owner = get_file_owner("$projectroot/$project");
1104         }
1105
1106         return $owner;
1107 }
1108
1109 sub git_get_last_activity {
1110         my ($path) = @_;
1111         my $fd;
1112
1113         $git_dir = "$projectroot/$path";
1114         open($fd, "-|", git_cmd(), 'for-each-ref',
1115              '--format=%(refname) %(committer)',
1116              '--sort=-committerdate',
1117              'refs/heads') or return;
1118         my $most_recent = <$fd>;
1119         close $fd or return;
1120         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1121                 my $timestamp = $1;
1122                 my $age = time - $timestamp;
1123                 return ($age, age_string($age));
1124         }
1125 }
1126
1127 sub git_get_references {
1128         my $type = shift || "";
1129         my %refs;
1130         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1131         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1132         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1133                 or return;
1134
1135         while (my $line = <$fd>) {
1136                 chomp $line;
1137                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1138                         if (defined $refs{$1}) {
1139                                 push @{$refs{$1}}, $2;
1140                         } else {
1141                                 $refs{$1} = [ $2 ];
1142                         }
1143                 }
1144         }
1145         close $fd or return;
1146         return \%refs;
1147 }
1148
1149 sub git_get_rev_name_tags {
1150         my $hash = shift || return undef;
1151
1152         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1153                 or return;
1154         my $name_rev = <$fd>;
1155         close $fd;
1156
1157         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1158                 return $1;
1159         } else {
1160                 # catches also '$hash undefined' output
1161                 return undef;
1162         }
1163 }
1164
1165 ## ----------------------------------------------------------------------
1166 ## parse to hash functions
1167
1168 sub parse_date {
1169         my $epoch = shift;
1170         my $tz = shift || "-0000";
1171
1172         my %date;
1173         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1174         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1175         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1176         $date{'hour'} = $hour;
1177         $date{'minute'} = $min;
1178         $date{'mday'} = $mday;
1179         $date{'day'} = $days[$wday];
1180         $date{'month'} = $months[$mon];
1181         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1182                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1183         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1184                              $mday, $months[$mon], $hour ,$min;
1185
1186         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1187         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1188         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1189         $date{'hour_local'} = $hour;
1190         $date{'minute_local'} = $min;
1191         $date{'tz_local'} = $tz;
1192         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1193                                    1900+$year, $mon+1, $mday,
1194                                    $hour, $min, $sec, $tz);
1195         return %date;
1196 }
1197
1198 sub parse_tag {
1199         my $tag_id = shift;
1200         my %tag;
1201         my @comment;
1202
1203         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1204         $tag{'id'} = $tag_id;
1205         while (my $line = <$fd>) {
1206                 chomp $line;
1207                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1208                         $tag{'object'} = $1;
1209                 } elsif ($line =~ m/^type (.+)$/) {
1210                         $tag{'type'} = $1;
1211                 } elsif ($line =~ m/^tag (.+)$/) {
1212                         $tag{'name'} = $1;
1213                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1214                         $tag{'author'} = $1;
1215                         $tag{'epoch'} = $2;
1216                         $tag{'tz'} = $3;
1217                 } elsif ($line =~ m/--BEGIN/) {
1218                         push @comment, $line;
1219                         last;
1220                 } elsif ($line eq "") {
1221                         last;
1222                 }
1223         }
1224         push @comment, <$fd>;
1225         $tag{'comment'} = \@comment;
1226         close $fd or return;
1227         if (!defined $tag{'name'}) {
1228                 return
1229         };
1230         return %tag
1231 }
1232
1233 sub parse_commit {
1234         my $commit_id = shift;
1235         my $commit_text = shift;
1236
1237         my @commit_lines;
1238         my %co;
1239
1240         if (defined $commit_text) {
1241                 @commit_lines = @$commit_text;
1242         } else {
1243                 local $/ = "\0";
1244                 open my $fd, "-|", git_cmd(), "rev-list",
1245                         "--header", "--parents", "--max-count=1",
1246                         $commit_id, "--"
1247                         or return;
1248                 @commit_lines = split '\n', <$fd>;
1249                 close $fd or return;
1250                 pop @commit_lines;
1251         }
1252         my $header = shift @commit_lines;
1253         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1254                 return;
1255         }
1256         ($co{'id'}, my @parents) = split ' ', $header;
1257         $co{'parents'} = \@parents;
1258         $co{'parent'} = $parents[0];
1259         while (my $line = shift @commit_lines) {
1260                 last if $line eq "\n";
1261                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1262                         $co{'tree'} = $1;
1263                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1264                         $co{'author'} = $1;
1265                         $co{'author_epoch'} = $2;
1266                         $co{'author_tz'} = $3;
1267                         if ($co{'author'} =~ m/^([^<]+) </) {
1268                                 $co{'author_name'} = $1;
1269                         } else {
1270                                 $co{'author_name'} = $co{'author'};
1271                         }
1272                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1273                         $co{'committer'} = $1;
1274                         $co{'committer_epoch'} = $2;
1275                         $co{'committer_tz'} = $3;
1276                         $co{'committer_name'} = $co{'committer'};
1277                         $co{'committer_name'} =~ s/ <.*//;
1278                 }
1279         }
1280         if (!defined $co{'tree'}) {
1281                 return;
1282         };
1283
1284         foreach my $title (@commit_lines) {
1285                 $title =~ s/^    //;
1286                 if ($title ne "") {
1287                         $co{'title'} = chop_str($title, 80, 5);
1288                         # remove leading stuff of merges to make the interesting part visible
1289                         if (length($title) > 50) {
1290                                 $title =~ s/^Automatic //;
1291                                 $title =~ s/^merge (of|with) /Merge ... /i;
1292                                 if (length($title) > 50) {
1293                                         $title =~ s/(http|rsync):\/\///;
1294                                 }
1295                                 if (length($title) > 50) {
1296                                         $title =~ s/(master|www|rsync)\.//;
1297                                 }
1298                                 if (length($title) > 50) {
1299                                         $title =~ s/kernel.org:?//;
1300                                 }
1301                                 if (length($title) > 50) {
1302                                         $title =~ s/\/pub\/scm//;
1303                                 }
1304                         }
1305                         $co{'title_short'} = chop_str($title, 50, 5);
1306                         last;
1307                 }
1308         }
1309         if ($co{'title'} eq "") {
1310                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1311         }
1312         # remove added spaces
1313         foreach my $line (@commit_lines) {
1314                 $line =~ s/^    //;
1315         }
1316         $co{'comment'} = \@commit_lines;
1317
1318         my $age = time - $co{'committer_epoch'};
1319         $co{'age'} = $age;
1320         $co{'age_string'} = age_string($age);
1321         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1322         if ($age > 60*60*24*7*2) {
1323                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1324                 $co{'age_string_age'} = $co{'age_string'};
1325         } else {
1326                 $co{'age_string_date'} = $co{'age_string'};
1327                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1328         }
1329         return %co;
1330 }
1331
1332 # parse ref from ref_file, given by ref_id, with given type
1333 sub parse_ref {
1334         my $ref_file = shift;
1335         my $ref_id = shift;
1336         my $type = shift || git_get_type($ref_id);
1337         my %ref_item;
1338
1339         $ref_item{'type'} = $type;
1340         $ref_item{'id'} = $ref_id;
1341         $ref_item{'epoch'} = 0;
1342         $ref_item{'age'} = "unknown";
1343         if ($type eq "tag") {
1344                 my %tag = parse_tag($ref_id);
1345                 $ref_item{'comment'} = $tag{'comment'};
1346                 if ($tag{'type'} eq "commit") {
1347                         my %co = parse_commit($tag{'object'});
1348                         $ref_item{'epoch'} = $co{'committer_epoch'};
1349                         $ref_item{'age'} = $co{'age_string'};
1350                 } elsif (defined($tag{'epoch'})) {
1351                         my $age = time - $tag{'epoch'};
1352                         $ref_item{'epoch'} = $tag{'epoch'};
1353                         $ref_item{'age'} = age_string($age);
1354                 }
1355                 $ref_item{'reftype'} = $tag{'type'};
1356                 $ref_item{'name'} = $tag{'name'};
1357                 $ref_item{'refid'} = $tag{'object'};
1358         } elsif ($type eq "commit"){
1359                 my %co = parse_commit($ref_id);
1360                 $ref_item{'reftype'} = "commit";
1361                 $ref_item{'name'} = $ref_file;
1362                 $ref_item{'title'} = $co{'title'};
1363                 $ref_item{'refid'} = $ref_id;
1364                 $ref_item{'epoch'} = $co{'committer_epoch'};
1365                 $ref_item{'age'} = $co{'age_string'};
1366         } else {
1367                 $ref_item{'reftype'} = $type;
1368                 $ref_item{'name'} = $ref_file;
1369                 $ref_item{'refid'} = $ref_id;
1370         }
1371
1372         return %ref_item;
1373 }
1374
1375 # parse line of git-diff-tree "raw" output
1376 sub parse_difftree_raw_line {
1377         my $line = shift;
1378         my %res;
1379
1380         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1381         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1382         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1383                 $res{'from_mode'} = $1;
1384                 $res{'to_mode'} = $2;
1385                 $res{'from_id'} = $3;
1386                 $res{'to_id'} = $4;
1387                 $res{'status'} = $5;
1388                 $res{'similarity'} = $6;
1389                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1390                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1391                 } else {
1392                         $res{'file'} = unquote($7);
1393                 }
1394         }
1395         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1396         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1397                 $res{'commit'} = $1;
1398         }
1399
1400         return wantarray ? %res : \%res;
1401 }
1402
1403 # parse line of git-ls-tree output
1404 sub parse_ls_tree_line ($;%) {
1405         my $line = shift;
1406         my %opts = @_;
1407         my %res;
1408
1409         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1410         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1411
1412         $res{'mode'} = $1;
1413         $res{'type'} = $2;
1414         $res{'hash'} = $3;
1415         if ($opts{'-z'}) {
1416                 $res{'name'} = $4;
1417         } else {
1418                 $res{'name'} = unquote($4);
1419         }
1420
1421         return wantarray ? %res : \%res;
1422 }
1423
1424 ## ......................................................................
1425 ## parse to array of hashes functions
1426
1427 sub git_get_heads_list {
1428         my $limit = shift;
1429         my @headslist;
1430
1431         open my $fd, '-|', git_cmd(), 'for-each-ref',
1432                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1433                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1434                 'refs/heads'
1435                 or return;
1436         while (my $line = <$fd>) {
1437                 my %ref_item;
1438
1439                 chomp $line;
1440                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1441                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1442                 my ($committer, $epoch, $tz) =
1443                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1444                 $name =~ s!^refs/heads/!!;
1445
1446                 $ref_item{'name'}  = $name;
1447                 $ref_item{'id'}    = $hash;
1448                 $ref_item{'title'} = $title || '(no commit message)';
1449                 $ref_item{'epoch'} = $epoch;
1450                 if ($epoch) {
1451                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1452                 } else {
1453                         $ref_item{'age'} = "unknown";
1454                 }
1455
1456                 push @headslist, \%ref_item;
1457         }
1458         close $fd;
1459
1460         return wantarray ? @headslist : \@headslist;
1461 }
1462
1463 sub git_get_tags_list {
1464         my $limit = shift;
1465         my @tagslist;
1466
1467         open my $fd, '-|', git_cmd(), 'for-each-ref',
1468                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1469                 '--format=%(objectname) %(objecttype) %(refname) '.
1470                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1471                 'refs/tags'
1472                 or return;
1473         while (my $line = <$fd>) {
1474                 my %ref_item;
1475
1476                 chomp $line;
1477                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1478                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1479                 my ($creator, $epoch, $tz) =
1480                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1481                 $name =~ s!^refs/tags/!!;
1482
1483                 $ref_item{'type'} = $type;
1484                 $ref_item{'id'} = $id;
1485                 $ref_item{'name'} = $name;
1486                 if ($type eq "tag") {
1487                         $ref_item{'subject'} = $title;
1488                         $ref_item{'reftype'} = $reftype;
1489                         $ref_item{'refid'}   = $refid;
1490                 } else {
1491                         $ref_item{'reftype'} = $type;
1492                         $ref_item{'refid'}   = $id;
1493                 }
1494
1495                 if ($type eq "tag" || $type eq "commit") {
1496                         $ref_item{'epoch'} = $epoch;
1497                         if ($epoch) {
1498                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1499                         } else {
1500                                 $ref_item{'age'} = "unknown";
1501                         }
1502                 }
1503
1504                 push @tagslist, \%ref_item;
1505         }
1506         close $fd;
1507
1508         return wantarray ? @tagslist : \@tagslist;
1509 }
1510
1511 ## ----------------------------------------------------------------------
1512 ## filesystem-related functions
1513
1514 sub get_file_owner {
1515         my $path = shift;
1516
1517         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1518         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1519         if (!defined $gcos) {
1520                 return undef;
1521         }
1522         my $owner = $gcos;
1523         $owner =~ s/[,;].*$//;
1524         return to_utf8($owner);
1525 }
1526
1527 ## ......................................................................
1528 ## mimetype related functions
1529
1530 sub mimetype_guess_file {
1531         my $filename = shift;
1532         my $mimemap = shift;
1533         -r $mimemap or return undef;
1534
1535         my %mimemap;
1536         open(MIME, $mimemap) or return undef;
1537         while (<MIME>) {
1538                 next if m/^#/; # skip comments
1539                 my ($mime, $exts) = split(/\t+/);
1540                 if (defined $exts) {
1541                         my @exts = split(/\s+/, $exts);
1542                         foreach my $ext (@exts) {
1543                                 $mimemap{$ext} = $mime;
1544                         }
1545                 }
1546         }
1547         close(MIME);
1548
1549         $filename =~ /\.([^.]*)$/;
1550         return $mimemap{$1};
1551 }
1552
1553 sub mimetype_guess {
1554         my $filename = shift;
1555         my $mime;
1556         $filename =~ /\./ or return undef;
1557
1558         if ($mimetypes_file) {
1559                 my $file = $mimetypes_file;
1560                 if ($file !~ m!^/!) { # if it is relative path
1561                         # it is relative to project
1562                         $file = "$projectroot/$project/$file";
1563                 }
1564                 $mime = mimetype_guess_file($filename, $file);
1565         }
1566         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1567         return $mime;
1568 }
1569
1570 sub blob_mimetype {
1571         my $fd = shift;
1572         my $filename = shift;
1573
1574         if ($filename) {
1575                 my $mime = mimetype_guess($filename);
1576                 $mime and return $mime;
1577         }
1578
1579         # just in case
1580         return $default_blob_plain_mimetype unless $fd;
1581
1582         if (-T $fd) {
1583                 return 'text/plain' .
1584                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1585         } elsif (! $filename) {
1586                 return 'application/octet-stream';
1587         } elsif ($filename =~ m/\.png$/i) {
1588                 return 'image/png';
1589         } elsif ($filename =~ m/\.gif$/i) {
1590                 return 'image/gif';
1591         } elsif ($filename =~ m/\.jpe?g$/i) {
1592                 return 'image/jpeg';
1593         } else {
1594                 return 'application/octet-stream';
1595         }
1596 }
1597
1598 ## ======================================================================
1599 ## functions printing HTML: header, footer, error page
1600
1601 sub git_header_html {
1602         my $status = shift || "200 OK";
1603         my $expires = shift;
1604
1605         my $title = "$site_name";
1606         if (defined $project) {
1607                 $title .= " - $project";
1608                 if (defined $action) {
1609                         $title .= "/$action";
1610                         if (defined $file_name) {
1611                                 $title .= " - " . esc_path($file_name);
1612                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1613                                         $title .= "/";
1614                                 }
1615                         }
1616                 }
1617         }
1618         my $content_type;
1619         # require explicit support from the UA if we are to send the page as
1620         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1621         # we have to do this because MSIE sometimes globs '*/*', pretending to
1622         # support xhtml+xml but choking when it gets what it asked for.
1623         if (defined $cgi->http('HTTP_ACCEPT') &&
1624             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1625             $cgi->Accept('application/xhtml+xml') != 0) {
1626                 $content_type = 'application/xhtml+xml';
1627         } else {
1628                 $content_type = 'text/html';
1629         }
1630         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1631                            -status=> $status, -expires => $expires);
1632         print <<EOF;
1633 <?xml version="1.0" encoding="utf-8"?>
1634 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1635 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1636 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1637 <!-- git core binaries version $git_version -->
1638 <head>
1639 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1640 <meta name="generator" content="gitweb/$version git/$git_version"/>
1641 <meta name="robots" content="index, nofollow"/>
1642 <title>$title</title>
1643 EOF
1644 # print out each stylesheet that exist
1645         if (defined $stylesheet) {
1646 #provides backwards capability for those people who define style sheet in a config file
1647                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1648         } else {
1649                 foreach my $stylesheet (@stylesheets) {
1650                         next unless $stylesheet;
1651                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1652                 }
1653         }
1654         if (defined $project) {
1655                 printf('<link rel="alternate" title="%s log" '.
1656                        'href="%s" type="application/rss+xml"/>'."\n",
1657                        esc_param($project), href(action=>"rss"));
1658         } else {
1659                 printf('<link rel="alternate" title="%s projects list" '.
1660                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1661                        $site_name, href(project=>undef, action=>"project_index"));
1662                 printf('<link rel="alternate" title="%s projects logs" '.
1663                        'href="%s" type="text/x-opml"/>'."\n",
1664                        $site_name, href(project=>undef, action=>"opml"));
1665         }
1666         if (defined $favicon) {
1667                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1668         }
1669
1670         print "</head>\n" .
1671               "<body>\n";
1672
1673         if (-f $site_header) {
1674                 open (my $fd, $site_header);
1675                 print <$fd>;
1676                 close $fd;
1677         }
1678
1679         print "<div class=\"page_header\">\n" .
1680               $cgi->a({-href => esc_url($logo_url),
1681                        -title => $logo_label},
1682                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1683         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1684         if (defined $project) {
1685                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1686                 if (defined $action) {
1687                         print " / $action";
1688                 }
1689                 print "\n";
1690                 if (!defined $searchtext) {
1691                         $searchtext = "";
1692                 }
1693                 my $search_hash;
1694                 if (defined $hash_base) {
1695                         $search_hash = $hash_base;
1696                 } elsif (defined $hash) {
1697                         $search_hash = $hash;
1698                 } else {
1699                         $search_hash = "HEAD";
1700                 }
1701                 $cgi->param("a", "search");
1702                 $cgi->param("h", $search_hash);
1703                 $cgi->param("p", $project);
1704                 print $cgi->startform(-method => "get", -action => $my_uri) .
1705                       "<div class=\"search\">\n" .
1706                       $cgi->hidden(-name => "p") . "\n" .
1707                       $cgi->hidden(-name => "a") . "\n" .
1708                       $cgi->hidden(-name => "h") . "\n" .
1709                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1710                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1711                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1712                       " search:\n",
1713                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1714                       "</div>" .
1715                       $cgi->end_form() . "\n";
1716         }
1717         print "</div>\n";
1718 }
1719
1720 sub git_footer_html {
1721         print "<div class=\"page_footer\">\n";
1722         if (defined $project) {
1723                 my $descr = git_get_project_description($project);
1724                 if (defined $descr) {
1725                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1726                 }
1727                 print $cgi->a({-href => href(action=>"rss"),
1728                               -class => "rss_logo"}, "RSS") . "\n";
1729         } else {
1730                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1731                               -class => "rss_logo"}, "OPML") . " ";
1732                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1733                               -class => "rss_logo"}, "TXT") . "\n";
1734         }
1735         print "</div>\n" ;
1736
1737         if (-f $site_footer) {
1738                 open (my $fd, $site_footer);
1739                 print <$fd>;
1740                 close $fd;
1741         }
1742
1743         print "</body>\n" .
1744               "</html>";
1745 }
1746
1747 sub die_error {
1748         my $status = shift || "403 Forbidden";
1749         my $error = shift || "Malformed query, file missing or permission denied";
1750
1751         git_header_html($status);
1752         print <<EOF;
1753 <div class="page_body">
1754 <br /><br />
1755 $status - $error
1756 <br />
1757 </div>
1758 EOF
1759         git_footer_html();
1760         exit;
1761 }
1762
1763 ## ----------------------------------------------------------------------
1764 ## functions printing or outputting HTML: navigation
1765
1766 sub git_print_page_nav {
1767         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1768         $extra = '' if !defined $extra; # pager or formats
1769
1770         my @navs = qw(summary shortlog log commit commitdiff tree);
1771         if ($suppress) {
1772                 @navs = grep { $_ ne $suppress } @navs;
1773         }
1774
1775         my %arg = map { $_ => {action=>$_} } @navs;
1776         if (defined $head) {
1777                 for (qw(commit commitdiff)) {
1778                         $arg{$_}{hash} = $head;
1779                 }
1780                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1781                         for (qw(shortlog log)) {
1782                                 $arg{$_}{hash} = $head;
1783                         }
1784                 }
1785         }
1786         $arg{tree}{hash} = $treehead if defined $treehead;
1787         $arg{tree}{hash_base} = $treebase if defined $treebase;
1788
1789         print "<div class=\"page_nav\">\n" .
1790                 (join " | ",
1791                  map { $_ eq $current ?
1792                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1793                  } @navs);
1794         print "<br/>\n$extra<br/>\n" .
1795               "</div>\n";
1796 }
1797
1798 sub format_paging_nav {
1799         my ($action, $hash, $head, $page, $nrevs) = @_;
1800         my $paging_nav;
1801
1802
1803         if ($hash ne $head || $page) {
1804                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1805         } else {
1806                 $paging_nav .= "HEAD";
1807         }
1808
1809         if ($page > 0) {
1810                 $paging_nav .= " &sdot; " .
1811                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1812                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1813         } else {
1814                 $paging_nav .= " &sdot; prev";
1815         }
1816
1817         if ($nrevs >= (100 * ($page+1)-1)) {
1818                 $paging_nav .= " &sdot; " .
1819                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1820                                  -accesskey => "n", -title => "Alt-n"}, "next");
1821         } else {
1822                 $paging_nav .= " &sdot; next";
1823         }
1824
1825         return $paging_nav;
1826 }
1827
1828 ## ......................................................................
1829 ## functions printing or outputting HTML: div
1830
1831 sub git_print_header_div {
1832         my ($action, $title, $hash, $hash_base) = @_;
1833         my %args = ();
1834
1835         $args{action} = $action;
1836         $args{hash} = $hash if $hash;
1837         $args{hash_base} = $hash_base if $hash_base;
1838
1839         print "<div class=\"header\">\n" .
1840               $cgi->a({-href => href(%args), -class => "title"},
1841               $title ? $title : $action) .
1842               "\n</div>\n";
1843 }
1844
1845 #sub git_print_authorship (\%) {
1846 sub git_print_authorship {
1847         my $co = shift;
1848
1849         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1850         print "<div class=\"author_date\">" .
1851               esc_html($co->{'author_name'}) .
1852               " [$ad{'rfc2822'}";
1853         if ($ad{'hour_local'} < 6) {
1854                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1855                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1856         } else {
1857                 printf(" (%02d:%02d %s)",
1858                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1859         }
1860         print "]</div>\n";
1861 }
1862
1863 sub git_print_page_path {
1864         my $name = shift;
1865         my $type = shift;
1866         my $hb = shift;
1867
1868
1869         print "<div class=\"page_path\">";
1870         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1871                       -title => 'tree root'}, "[$project]");
1872         print " / ";
1873         if (defined $name) {
1874                 my @dirname = split '/', $name;
1875                 my $basename = pop @dirname;
1876                 my $fullname = '';
1877
1878                 foreach my $dir (@dirname) {
1879                         $fullname .= ($fullname ? '/' : '') . $dir;
1880                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1881                                                      hash_base=>$hb),
1882                                       -title => $fullname}, esc_path($dir));
1883                         print " / ";
1884                 }
1885                 if (defined $type && $type eq 'blob') {
1886                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1887                                                      hash_base=>$hb),
1888                                       -title => $name}, esc_path($basename));
1889                 } elsif (defined $type && $type eq 'tree') {
1890                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1891                                                      hash_base=>$hb),
1892                                       -title => $name}, esc_path($basename));
1893                         print " / ";
1894                 } else {
1895                         print esc_path($basename);
1896                 }
1897         }
1898         print "<br/></div>\n";
1899 }
1900
1901 # sub git_print_log (\@;%) {
1902 sub git_print_log ($;%) {
1903         my $log = shift;
1904         my %opts = @_;
1905
1906         if ($opts{'-remove_title'}) {
1907                 # remove title, i.e. first line of log
1908                 shift @$log;
1909         }
1910         # remove leading empty lines
1911         while (defined $log->[0] && $log->[0] eq "") {
1912                 shift @$log;
1913         }
1914
1915         # print log
1916         my $signoff = 0;
1917         my $empty = 0;
1918         foreach my $line (@$log) {
1919                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1920                         $signoff = 1;
1921                         $empty = 0;
1922                         if (! $opts{'-remove_signoff'}) {
1923                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1924                                 next;
1925                         } else {
1926                                 # remove signoff lines
1927                                 next;
1928                         }
1929                 } else {
1930                         $signoff = 0;
1931                 }
1932
1933                 # print only one empty line
1934                 # do not print empty line after signoff
1935                 if ($line eq "") {
1936                         next if ($empty || $signoff);
1937                         $empty = 1;
1938                 } else {
1939                         $empty = 0;
1940                 }
1941
1942                 print format_log_line_html($line) . "<br/>\n";
1943         }
1944
1945         if ($opts{'-final_empty_line'}) {
1946                 # end with single empty line
1947                 print "<br/>\n" unless $empty;
1948         }
1949 }
1950
1951 # print tree entry (row of git_tree), but without encompassing <tr> element
1952 sub git_print_tree_entry {
1953         my ($t, $basedir, $hash_base, $have_blame) = @_;
1954
1955         my %base_key = ();
1956         $base_key{hash_base} = $hash_base if defined $hash_base;
1957
1958         # The format of a table row is: mode list link.  Where mode is
1959         # the mode of the entry, list is the name of the entry, an href,
1960         # and link is the action links of the entry.
1961
1962         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1963         if ($t->{'type'} eq "blob") {
1964                 print "<td class=\"list\">" .
1965                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1966                                                file_name=>"$basedir$t->{'name'}", %base_key),
1967                                 -class => "list"}, esc_path($t->{'name'})) . "</td>\n";
1968                 print "<td class=\"link\">";
1969                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1970                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1971                               "blob");
1972                 if ($have_blame) {
1973                         print " | " .
1974                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1975                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1976                                             "blame");
1977                 }
1978                 if (defined $hash_base) {
1979                         print " | " .
1980                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1981                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1982                                       "history");
1983                 }
1984                 print " | " .
1985                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1986                                                file_name=>"$basedir$t->{'name'}")},
1987                                 "raw");
1988                 print "</td>\n";
1989
1990         } elsif ($t->{'type'} eq "tree") {
1991                 print "<td class=\"list\">";
1992                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1993                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1994                               esc_path($t->{'name'}));
1995                 print "</td>\n";
1996                 print "<td class=\"link\">";
1997                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1998                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1999                               "tree");
2000                 if (defined $hash_base) {
2001                         print " | " .
2002                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2003                                                      file_name=>"$basedir$t->{'name'}")},
2004                                       "history");
2005                 }
2006                 print "</td>\n";
2007         }
2008 }
2009
2010 ## ......................................................................
2011 ## functions printing large fragments of HTML
2012
2013 sub git_difftree_body {
2014         my ($difftree, $hash, $parent) = @_;
2015         my ($have_blame) = gitweb_check_feature('blame');
2016         print "<div class=\"list_head\">\n";
2017         if ($#{$difftree} > 10) {
2018                 print(($#{$difftree} + 1) . " files changed:\n");
2019         }
2020         print "</div>\n";
2021
2022         print "<table class=\"diff_tree\">\n";
2023         my $alternate = 1;
2024         my $patchno = 0;
2025         foreach my $line (@{$difftree}) {
2026                 my %diff = parse_difftree_raw_line($line);
2027
2028                 if ($alternate) {
2029                         print "<tr class=\"dark\">\n";
2030                 } else {
2031                         print "<tr class=\"light\">\n";
2032                 }
2033                 $alternate ^= 1;
2034
2035                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2036                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2037                 if ($diff{'to_mode'} ne ('0' x 6)) {
2038                         $to_mode_oct = oct $diff{'to_mode'};
2039                         if (S_ISREG($to_mode_oct)) { # only for regular file
2040                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2041                         }
2042                         $to_file_type = file_type($diff{'to_mode'});
2043                 }
2044                 if ($diff{'from_mode'} ne ('0' x 6)) {
2045                         $from_mode_oct = oct $diff{'from_mode'};
2046                         if (S_ISREG($to_mode_oct)) { # only for regular file
2047                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2048                         }
2049                         $from_file_type = file_type($diff{'from_mode'});
2050                 }
2051
2052                 if ($diff{'status'} eq "A") { # created
2053                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2054                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2055                         $mode_chng   .= "]</span>";
2056                         print "<td>";
2057                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2058                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2059                                       -class => "list"}, esc_path($diff{'file'}));
2060                         print "</td>\n";
2061                         print "<td>$mode_chng</td>\n";
2062                         print "<td class=\"link\">";
2063                         if ($action eq 'commitdiff') {
2064                                 # link to patch
2065                                 $patchno++;
2066                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2067                         }
2068                         print "</td>\n";
2069
2070                 } elsif ($diff{'status'} eq "D") { # deleted
2071                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2072                         print "<td>";
2073                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2074                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2075                                        -class => "list"}, esc_path($diff{'file'}));
2076                         print "</td>\n";
2077                         print "<td>$mode_chng</td>\n";
2078                         print "<td class=\"link\">";
2079                         if ($action eq 'commitdiff') {
2080                                 # link to patch
2081                                 $patchno++;
2082                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2083                                 print " | ";
2084                         }
2085                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2086                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2087                                       "blob") . " | ";
2088                         if ($have_blame) {
2089                                 print $cgi->a({-href =>
2090                                                    href(action=>"blame",
2091                                                         hash_base=>$parent,
2092                                                         file_name=>$diff{'file'})},
2093                                               "blame") . " | ";
2094                         }
2095                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2096                                                      file_name=>$diff{'file'})},
2097                                       "history");
2098                         print "</td>\n";
2099
2100                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2101                         my $mode_chnge = "";
2102                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2103                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2104                                 if ($from_file_type != $to_file_type) {
2105                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2106                                 }
2107                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2108                                         if ($from_mode_str && $to_mode_str) {
2109                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2110                                         } elsif ($to_mode_str) {
2111                                                 $mode_chnge .= " mode: $to_mode_str";
2112                                         }
2113                                 }
2114                                 $mode_chnge .= "]</span>\n";
2115                         }
2116                         print "<td>";
2117                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2118                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2119                                       -class => "list"}, esc_path($diff{'file'}));
2120                         print "</td>\n";
2121                         print "<td>$mode_chnge</td>\n";
2122                         print "<td class=\"link\">";
2123                         if ($action eq 'commitdiff') {
2124                                 # link to patch
2125                                 $patchno++;
2126                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2127                                       " | ";
2128                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2129                                 # "commit" view and modified file (not onlu mode changed)
2130                                 print $cgi->a({-href => href(action=>"blobdiff",
2131                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2132                                                              hash_base=>$hash, hash_parent_base=>$parent,
2133                                                              file_name=>$diff{'file'})},
2134                                               "diff") .
2135                                       " | ";
2136                         }
2137                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2138                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2139                                       "blob") . " | ";
2140                         if ($have_blame) {
2141                                 print $cgi->a({-href => href(action=>"blame",
2142                                                              hash_base=>$hash,
2143                                                              file_name=>$diff{'file'})},
2144                                               "blame") . " | ";
2145                         }
2146                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2147                                                      file_name=>$diff{'file'})},
2148                                       "history");
2149                         print "</td>\n";
2150
2151                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2152                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2153                         my $nstatus = $status_name{$diff{'status'}};
2154                         my $mode_chng = "";
2155                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2156                                 # mode also for directories, so we cannot use $to_mode_str
2157                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2158                         }
2159                         print "<td>" .
2160                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2161                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2162                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2163                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2164                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2165                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2166                                       -class => "list"}, esc_path($diff{'from_file'})) .
2167                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2168                               "<td class=\"link\">";
2169                         if ($action eq 'commitdiff') {
2170                                 # link to patch
2171                                 $patchno++;
2172                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2173                                       " | ";
2174                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2175                                 # "commit" view and modified file (not only pure rename or copy)
2176                                 print $cgi->a({-href => href(action=>"blobdiff",
2177                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2178                                                              hash_base=>$hash, hash_parent_base=>$parent,
2179                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2180                                               "diff") .
2181                                       " | ";
2182                         }
2183                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2184                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2185                                       "blob") . " | ";
2186                         if ($have_blame) {
2187                                 print $cgi->a({-href => href(action=>"blame",
2188                                                              hash_base=>$hash,
2189                                                              file_name=>$diff{'to_file'})},
2190                                               "blame") . " | ";
2191                         }
2192                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2193                                                     file_name=>$diff{'from_file'})},
2194                                       "history");
2195                         print "</td>\n";
2196
2197                 } # we should not encounter Unmerged (U) or Unknown (X) status
2198                 print "</tr>\n";
2199         }
2200         print "</table>\n";
2201 }
2202
2203 sub git_patchset_body {
2204         my ($fd, $difftree, $hash, $hash_parent) = @_;
2205
2206         my $patch_idx = 0;
2207         my $in_header = 0;
2208         my $patch_found = 0;
2209         my $diffinfo;
2210         my (%from, %to);
2211
2212         print "<div class=\"patchset\">\n";
2213
2214         LINE:
2215         while (my $patch_line = <$fd>) {
2216                 chomp $patch_line;
2217
2218                 if ($patch_line =~ m/^diff /) { # "git diff" header
2219                         # beginning of patch (in patchset)
2220                         if ($patch_found) {
2221                                 # close extended header for previous empty patch
2222                                 if ($in_header) {
2223                                         print "</div>\n" # class="diff extended_header"
2224                                 }
2225                                 # close previous patch
2226                                 print "</div>\n"; # class="patch"
2227                         } else {
2228                                 # first patch in patchset
2229                                 $patch_found = 1;
2230                         }
2231                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2232
2233                         # read and prepare patch information
2234                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2235                                 # pre-parsed (or generated by hand)
2236                                 $diffinfo = $difftree->[$patch_idx];
2237                         } else {
2238                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2239                         }
2240                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2241                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2242                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2243                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2244                                                      hash=>$diffinfo->{'from_id'},
2245                                                      file_name=>$from{'file'});
2246                         }
2247                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2248                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2249                                                    hash=>$diffinfo->{'to_id'},
2250                                                    file_name=>$to{'file'});
2251                         }
2252                         $patch_idx++;
2253
2254                         # print "git diff" header
2255                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2256                         if ($from{'href'}) {
2257                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2258                                                        'a/' . esc_path($from{'file'}));
2259                         } else { # file was added
2260                                 $patch_line .= 'a/' . esc_path($from{'file'});
2261                         }
2262                         $patch_line .= ' ';
2263                         if ($to{'href'}) {
2264                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2265                                                        'b/' . esc_path($to{'file'}));
2266                         } else { # file was deleted
2267                                 $patch_line .= 'b/' . esc_path($to{'file'});
2268                         }
2269
2270                         print "<div class=\"diff header\">$patch_line</div>\n";
2271                         print "<div class=\"diff extended_header\">\n";
2272                         $in_header = 1;
2273                         next LINE;
2274                 }
2275
2276                 if ($in_header) {
2277                         if ($patch_line !~ m/^---/) {
2278                                 # match <path>
2279                                 if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2280                                         $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2281                                                                 esc_path($from{'file'}));
2282                                 }
2283                                 if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2284                                         $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2285                                                               esc_path($to{'file'}));
2286                                 }
2287                                 # match <mode>
2288                                 if ($patch_line =~ m/\s(\d{6})$/) {
2289                                         $patch_line .= '<span class="info"> (' .
2290                                                        file_type_long($1) .
2291                                                        ')</span>';
2292                                 }
2293                                 # match <hash>
2294                                 if ($patch_line =~ m/^index/) {
2295                                         my ($from_link, $to_link);
2296                                         if ($from{'href'}) {
2297                                                 $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2298                                                                      substr($diffinfo->{'from_id'},0,7));
2299                                         } else {
2300                                                 $from_link = '0' x 7;
2301                                         }
2302                                         if ($to{'href'}) {
2303                                                 $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2304                                                                    substr($diffinfo->{'to_id'},0,7));
2305                                         } else {
2306                                                 $to_link = '0' x 7;
2307                                         }
2308                                         my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2309                                         $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2310                                 }
2311                                 print $patch_line . "<br/>\n";
2312
2313                         } else {
2314                                 #$in_header && $patch_line =~ m/^---/;
2315                                 print "</div>\n"; # class="diff extended_header"
2316                                 $in_header = 0;
2317
2318                                 if ($from{'href'}) {
2319                                         $patch_line = '--- a/' .
2320                                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2321                                                               esc_path($from{'file'}));
2322                                 }
2323                                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2324
2325                                 $patch_line = <$fd>;
2326                                 chomp $patch_line;
2327
2328                                 #$patch_line =~ m/^+++/;
2329                                 if ($to{'href'}) {
2330                                         $patch_line = '+++ b/' .
2331                                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2332                                                               esc_path($to{'file'}));
2333                                 }
2334                                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2335
2336                         }
2337
2338                         next LINE;
2339                 }
2340
2341                 print format_diff_line($patch_line);
2342         }
2343         print "</div>\n" if $patch_found; # class="patch"
2344
2345         print "</div>\n"; # class="patchset"
2346 }
2347
2348 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2349
2350 sub git_project_list_body {
2351         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2352
2353         my ($check_forks) = gitweb_check_feature('forks');
2354
2355         my @projects;
2356         foreach my $pr (@$projlist) {
2357                 my (@aa) = git_get_last_activity($pr->{'path'});
2358                 unless (@aa) {
2359                         next;
2360                 }
2361                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2362                 if (!defined $pr->{'descr'}) {
2363                         my $descr = git_get_project_description($pr->{'path'}) || "";
2364                         $pr->{'descr'} = chop_str($descr, 25, 5);
2365                 }
2366                 if (!defined $pr->{'owner'}) {
2367                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2368                 }
2369                 if ($check_forks) {
2370                         my $pname = $pr->{'path'};
2371                         if (($pname =~ s/\.git$//) &&
2372                             ($pname !~ /\/$/) &&
2373                             (-d "$projectroot/$pname")) {
2374                                 $pr->{'forks'} = "-d $projectroot/$pname";
2375                         }
2376                         else {
2377                                 $pr->{'forks'} = 0;
2378                         }
2379                 }
2380                 push @projects, $pr;
2381         }
2382
2383         $order ||= "project";
2384         $from = 0 unless defined $from;
2385         $to = $#projects if (!defined $to || $#projects < $to);
2386
2387         print "<table class=\"project_list\">\n";
2388         unless ($no_header) {
2389                 print "<tr>\n";
2390                 if ($check_forks) {
2391                         print "<th></th>\n";
2392                 }
2393                 if ($order eq "project") {
2394                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2395                         print "<th>Project</th>\n";
2396                 } else {
2397                         print "<th>" .
2398                               $cgi->a({-href => href(project=>undef, order=>'project'),
2399                                        -class => "header"}, "Project") .
2400                               "</th>\n";
2401                 }
2402                 if ($order eq "descr") {
2403                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2404                         print "<th>Description</th>\n";
2405                 } else {
2406                         print "<th>" .
2407                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2408                                        -class => "header"}, "Description") .
2409                               "</th>\n";
2410                 }
2411                 if ($order eq "owner") {
2412                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2413                         print "<th>Owner</th>\n";
2414                 } else {
2415                         print "<th>" .
2416                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2417                                        -class => "header"}, "Owner") .
2418                               "</th>\n";
2419                 }
2420                 if ($order eq "age") {
2421                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2422                         print "<th>Last Change</th>\n";
2423                 } else {
2424                         print "<th>" .
2425                               $cgi->a({-href => href(project=>undef, order=>'age'),
2426                                        -class => "header"}, "Last Change") .
2427                               "</th>\n";
2428                 }
2429                 print "<th></th>\n" .
2430                       "</tr>\n";
2431         }
2432         my $alternate = 1;
2433         for (my $i = $from; $i <= $to; $i++) {
2434                 my $pr = $projects[$i];
2435                 if ($alternate) {
2436                         print "<tr class=\"dark\">\n";
2437                 } else {
2438                         print "<tr class=\"light\">\n";
2439                 }
2440                 $alternate ^= 1;
2441                 if ($check_forks) {
2442                         print "<td>";
2443                         if ($pr->{'forks'}) {
2444                                 print "<!-- $pr->{'forks'} -->\n";
2445                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2446                         }
2447                         print "</td>\n";
2448                 }
2449                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2450                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2451                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2452                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2453                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2454                       $pr->{'age_string'} . "</td>\n" .
2455                       "<td class=\"link\">" .
2456                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2457                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2458                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2459                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2460                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2461                       "</td>\n" .
2462                       "</tr>\n";
2463         }
2464         if (defined $extra) {
2465                 print "<tr>\n";
2466                 if ($check_forks) {
2467                         print "<td></td>\n";
2468                 }
2469                 print "<td colspan=\"5\">$extra</td>\n" .
2470                       "</tr>\n";
2471         }
2472         print "</table>\n";
2473 }
2474
2475 sub git_shortlog_body {
2476         # uses global variable $project
2477         my ($revlist, $from, $to, $refs, $extra) = @_;
2478
2479         $from = 0 unless defined $from;
2480         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2481
2482         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2483         my $alternate = 1;
2484         for (my $i = $from; $i <= $to; $i++) {
2485                 my $commit = $revlist->[$i];
2486                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2487                 my $ref = format_ref_marker($refs, $commit);
2488                 my %co = parse_commit($commit);
2489                 if ($alternate) {
2490                         print "<tr class=\"dark\">\n";
2491                 } else {
2492                         print "<tr class=\"light\">\n";
2493                 }
2494                 $alternate ^= 1;
2495                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2496                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2497                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2498                       "<td>";
2499                 print format_subject_html($co{'title'}, $co{'title_short'},
2500                                           href(action=>"commit", hash=>$commit), $ref);
2501                 print "</td>\n" .
2502                       "<td class=\"link\">" .
2503                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2504                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2505                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2506                 if (gitweb_have_snapshot()) {
2507                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2508                 }
2509                 print "</td>\n" .
2510                       "</tr>\n";
2511         }
2512         if (defined $extra) {
2513                 print "<tr>\n" .
2514                       "<td colspan=\"4\">$extra</td>\n" .
2515                       "</tr>\n";
2516         }
2517         print "</table>\n";
2518 }
2519
2520 sub git_history_body {
2521         # Warning: assumes constant type (blob or tree) during history
2522         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2523
2524         $from = 0 unless defined $from;
2525         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2526
2527         print "<table class=\"history\" cellspacing=\"0\">\n";
2528         my $alternate = 1;
2529         for (my $i = $from; $i <= $to; $i++) {
2530                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2531                         next;
2532                 }
2533
2534                 my $commit = $1;
2535                 my %co = parse_commit($commit);
2536                 if (!%co) {
2537                         next;
2538                 }
2539
2540                 my $ref = format_ref_marker($refs, $commit);
2541
2542                 if ($alternate) {
2543                         print "<tr class=\"dark\">\n";
2544                 } else {
2545                         print "<tr class=\"light\">\n";
2546                 }
2547                 $alternate ^= 1;
2548                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2549                       # shortlog uses      chop_str($co{'author_name'}, 10)
2550                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2551                       "<td>";
2552                 # originally git_history used chop_str($co{'title'}, 50)
2553                 print format_subject_html($co{'title'}, $co{'title_short'},
2554                                           href(action=>"commit", hash=>$commit), $ref);
2555                 print "</td>\n" .
2556                       "<td class=\"link\">" .
2557                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2558                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2559
2560                 if ($ftype eq 'blob') {
2561                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2562                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2563                         if (defined $blob_current && defined $blob_parent &&
2564                                         $blob_current ne $blob_parent) {
2565                                 print " | " .
2566                                         $cgi->a({-href => href(action=>"blobdiff",
2567                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2568                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2569                                                                file_name=>$file_name)},
2570                                                 "diff to current");
2571                         }
2572                 }
2573                 print "</td>\n" .
2574                       "</tr>\n";
2575         }
2576         if (defined $extra) {
2577                 print "<tr>\n" .
2578                       "<td colspan=\"4\">$extra</td>\n" .
2579                       "</tr>\n";
2580         }
2581         print "</table>\n";
2582 }
2583
2584 sub git_tags_body {
2585         # uses global variable $project
2586         my ($taglist, $from, $to, $extra) = @_;
2587         $from = 0 unless defined $from;
2588         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2589
2590         print "<table class=\"tags\" cellspacing=\"0\">\n";
2591         my $alternate = 1;
2592         for (my $i = $from; $i <= $to; $i++) {
2593                 my $entry = $taglist->[$i];
2594                 my %tag = %$entry;
2595                 my $comment = $tag{'subject'};
2596                 my $comment_short;
2597                 if (defined $comment) {
2598                         $comment_short = chop_str($comment, 30, 5);
2599                 }
2600                 if ($alternate) {
2601                         print "<tr class=\"dark\">\n";
2602                 } else {
2603                         print "<tr class=\"light\">\n";
2604                 }
2605                 $alternate ^= 1;
2606                 print "<td><i>$tag{'age'}</i></td>\n" .
2607                       "<td>" .
2608                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2609                                -class => "list name"}, esc_html($tag{'name'})) .
2610                       "</td>\n" .
2611                       "<td>";
2612                 if (defined $comment) {
2613                         print format_subject_html($comment, $comment_short,
2614                                                   href(action=>"tag", hash=>$tag{'id'}));
2615                 }
2616                 print "</td>\n" .
2617                       "<td class=\"selflink\">";
2618                 if ($tag{'type'} eq "tag") {
2619                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2620                 } else {
2621                         print "&nbsp;";
2622                 }
2623                 print "</td>\n" .
2624                       "<td class=\"link\">" . " | " .
2625                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2626                 if ($tag{'reftype'} eq "commit") {
2627                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2628                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2629                 } elsif ($tag{'reftype'} eq "blob") {
2630                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2631                 }
2632                 print "</td>\n" .
2633                       "</tr>";
2634         }
2635         if (defined $extra) {
2636                 print "<tr>\n" .
2637                       "<td colspan=\"5\">$extra</td>\n" .
2638                       "</tr>\n";
2639         }
2640         print "</table>\n";
2641 }
2642
2643 sub git_heads_body {
2644         # uses global variable $project
2645         my ($headlist, $head, $from, $to, $extra) = @_;
2646         $from = 0 unless defined $from;
2647         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2648
2649         print "<table class=\"heads\" cellspacing=\"0\">\n";
2650         my $alternate = 1;
2651         for (my $i = $from; $i <= $to; $i++) {
2652                 my $entry = $headlist->[$i];
2653                 my %ref = %$entry;
2654                 my $curr = $ref{'id'} eq $head;
2655                 if ($alternate) {
2656                         print "<tr class=\"dark\">\n";
2657                 } else {
2658                         print "<tr class=\"light\">\n";
2659                 }
2660                 $alternate ^= 1;
2661                 print "<td><i>$ref{'age'}</i></td>\n" .
2662                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2663                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2664                                -class => "list name"},esc_html($ref{'name'})) .
2665                       "</td>\n" .
2666                       "<td class=\"link\">" .
2667                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2668                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2669                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2670                       "</td>\n" .
2671                       "</tr>";
2672         }
2673         if (defined $extra) {
2674                 print "<tr>\n" .
2675                       "<td colspan=\"3\">$extra</td>\n" .
2676                       "</tr>\n";
2677         }
2678         print "</table>\n";
2679 }
2680
2681 ## ======================================================================
2682 ## ======================================================================
2683 ## actions
2684
2685 sub git_project_list {
2686         my $order = $cgi->param('o');
2687         if (defined $order && $order !~ m/project|descr|owner|age/) {
2688                 die_error(undef, "Unknown order parameter");
2689         }
2690
2691         my @list = git_get_projects_list();
2692         if (!@list) {
2693                 die_error(undef, "No projects found");
2694         }
2695
2696         git_header_html();
2697         if (-f $home_text) {
2698                 print "<div class=\"index_include\">\n";
2699                 open (my $fd, $home_text);
2700                 print <$fd>;
2701                 close $fd;
2702                 print "</div>\n";
2703         }
2704         git_project_list_body(\@list, $order);
2705         git_footer_html();
2706 }
2707
2708 sub git_forks {
2709         my $order = $cgi->param('o');
2710         if (defined $order && $order !~ m/project|descr|owner|age/) {
2711                 die_error(undef, "Unknown order parameter");
2712         }
2713
2714         my @list = git_get_projects_list($project);
2715         if (!@list) {
2716                 die_error(undef, "No forks found");
2717         }
2718
2719         git_header_html();
2720         git_print_page_nav('','');
2721         git_print_header_div('summary', "$project forks");
2722         git_project_list_body(\@list, $order);
2723         git_footer_html();
2724 }
2725
2726 sub git_project_index {
2727         my @projects = git_get_projects_list($project);
2728
2729         print $cgi->header(
2730                 -type => 'text/plain',
2731                 -charset => 'utf-8',
2732                 -content_disposition => 'inline; filename="index.aux"');
2733
2734         foreach my $pr (@projects) {
2735                 if (!exists $pr->{'owner'}) {
2736                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2737                 }
2738
2739                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2740                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2741                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2742                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2743                 $path  =~ s/ /\+/g;
2744                 $owner =~ s/ /\+/g;
2745
2746                 print "$path $owner\n";
2747         }
2748 }
2749
2750 sub git_summary {
2751         my $descr = git_get_project_description($project) || "none";
2752         my $head = git_get_head_hash($project);
2753         my %co = parse_commit($head);
2754         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2755
2756         my $owner = git_get_project_owner($project);
2757
2758         my $refs = git_get_references();
2759         my @taglist  = git_get_tags_list(15);
2760         my @headlist = git_get_heads_list(15);
2761         my @forklist;
2762         my ($check_forks) = gitweb_check_feature('forks');
2763
2764         if ($check_forks) {
2765                 @forklist = git_get_projects_list($project);
2766         }
2767
2768         git_header_html();
2769         git_print_page_nav('summary','', $head);
2770
2771         print "<div class=\"title\">&nbsp;</div>\n";
2772         print "<table cellspacing=\"0\">\n" .
2773               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2774               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2775               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2776         # use per project git URL list in $projectroot/$project/cloneurl
2777         # or make project git URL from git base URL and project name
2778         my $url_tag = "URL";
2779         my @url_list = git_get_project_url_list($project);
2780         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2781         foreach my $git_url (@url_list) {
2782                 next unless $git_url;
2783                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2784                 $url_tag = "";
2785         }
2786         print "</table>\n";
2787
2788         if (-s "$projectroot/$project/README.html") {
2789                 if (open my $fd, "$projectroot/$project/README.html") {
2790                         print "<div class=\"title\">readme</div>\n";
2791                         print $_ while (<$fd>);
2792                         close $fd;
2793                 }
2794         }
2795
2796         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2797                 git_get_head_hash($project), "--"
2798                 or die_error(undef, "Open git-rev-list failed");
2799         my @revlist = map { chomp; $_ } <$fd>;
2800         close $fd;
2801         git_print_header_div('shortlog');
2802         git_shortlog_body(\@revlist, 0, 15, $refs,
2803                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2804
2805         if (@taglist) {
2806                 git_print_header_div('tags');
2807                 git_tags_body(\@taglist, 0, 15,
2808                               $cgi->a({-href => href(action=>"tags")}, "..."));
2809         }
2810
2811         if (@headlist) {
2812                 git_print_header_div('heads');
2813                 git_heads_body(\@headlist, $head, 0, 15,
2814                                $cgi->a({-href => href(action=>"heads")}, "..."));
2815         }
2816
2817         if (@forklist) {
2818                 git_print_header_div('forks');
2819                 git_project_list_body(\@forklist, undef, 0, 15,
2820                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2821                                       'noheader');
2822         }
2823
2824         git_footer_html();
2825 }
2826
2827 sub git_tag {
2828         my $head = git_get_head_hash($project);
2829         git_header_html();
2830         git_print_page_nav('','', $head,undef,$head);
2831         my %tag = parse_tag($hash);
2832         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2833         print "<div class=\"title_text\">\n" .
2834               "<table cellspacing=\"0\">\n" .
2835               "<tr>\n" .
2836               "<td>object</td>\n" .
2837               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2838                                $tag{'object'}) . "</td>\n" .
2839               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2840                                               $tag{'type'}) . "</td>\n" .
2841               "</tr>\n";
2842         if (defined($tag{'author'})) {
2843                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2844                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2845                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2846                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2847                         "</td></tr>\n";
2848         }
2849         print "</table>\n\n" .
2850               "</div>\n";
2851         print "<div class=\"page_body\">";
2852         my $comment = $tag{'comment'};
2853         foreach my $line (@$comment) {
2854                 print esc_html($line) . "<br/>\n";
2855         }
2856         print "</div>\n";
2857         git_footer_html();
2858 }
2859
2860 sub git_blame2 {
2861         my $fd;
2862         my $ftype;
2863
2864         my ($have_blame) = gitweb_check_feature('blame');
2865         if (!$have_blame) {
2866                 die_error('403 Permission denied', "Permission denied");
2867         }
2868         die_error('404 Not Found', "File name not defined") if (!$file_name);
2869         $hash_base ||= git_get_head_hash($project);
2870         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2871         my %co = parse_commit($hash_base)
2872                 or die_error(undef, "Reading commit failed");
2873         if (!defined $hash) {
2874                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2875                         or die_error(undef, "Error looking up file");
2876         }
2877         $ftype = git_get_type($hash);
2878         if ($ftype !~ "blob") {
2879                 die_error("400 Bad Request", "Object is not a blob");
2880         }
2881         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2882               $file_name, $hash_base)
2883                 or die_error(undef, "Open git-blame failed");
2884         git_header_html();
2885         my $formats_nav =
2886                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2887                         "blob") .
2888                 " | " .
2889                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2890                         "history") .
2891                 " | " .
2892                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2893                         "HEAD");
2894         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2895         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2896         git_print_page_path($file_name, $ftype, $hash_base);
2897         my @rev_color = (qw(light2 dark2));
2898         my $num_colors = scalar(@rev_color);
2899         my $current_color = 0;
2900         my $last_rev;
2901         print <<HTML;
2902 <div class="page_body">
2903 <table class="blame">
2904 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2905 HTML
2906         my %metainfo = ();
2907         while (1) {
2908                 $_ = <$fd>;
2909                 last unless defined $_;
2910                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2911                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2912                 if (!exists $metainfo{$full_rev}) {
2913                         $metainfo{$full_rev} = {};
2914                 }
2915                 my $meta = $metainfo{$full_rev};
2916                 while (<$fd>) {
2917                         last if (s/^\t//);
2918                         if (/^(\S+) (.*)$/) {
2919                                 $meta->{$1} = $2;
2920                         }
2921                 }
2922                 my $data = $_;
2923                 my $rev = substr($full_rev, 0, 8);
2924                 my $author = $meta->{'author'};
2925                 my %date = parse_date($meta->{'author-time'},
2926                                       $meta->{'author-tz'});
2927                 my $date = $date{'iso-tz'};
2928                 if ($group_size) {
2929                         $current_color = ++$current_color % $num_colors;
2930                 }
2931                 print "<tr class=\"$rev_color[$current_color]\">\n";
2932                 if ($group_size) {
2933                         print "<td class=\"sha1\"";
2934                         print " title=\"". esc_html($author) . ", $date\"";
2935                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2936                         print ">";
2937                         print $cgi->a({-href => href(action=>"commit",
2938                                                      hash=>$full_rev,
2939                                                      file_name=>$file_name)},
2940                                       esc_html($rev));
2941                         print "</td>\n";
2942                 }
2943                 my $blamed = href(action => 'blame',
2944                                   file_name => $meta->{'filename'},
2945                                   hash_base => $full_rev);
2946                 print "<td class=\"linenr\">";
2947                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2948                                 -id => "l$lineno",
2949                                 -class => "linenr" },
2950                               esc_html($lineno));
2951                 print "</td>";
2952                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2953                 print "</tr>\n";
2954         }
2955         print "</table>\n";
2956         print "</div>";
2957         close $fd
2958                 or print "Reading blob failed\n";
2959         git_footer_html();
2960 }
2961
2962 sub git_blame {
2963         my $fd;
2964
2965         my ($have_blame) = gitweb_check_feature('blame');
2966         if (!$have_blame) {
2967                 die_error('403 Permission denied', "Permission denied");
2968         }
2969         die_error('404 Not Found', "File name not defined") if (!$file_name);
2970         $hash_base ||= git_get_head_hash($project);
2971         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2972         my %co = parse_commit($hash_base)
2973                 or die_error(undef, "Reading commit failed");
2974         if (!defined $hash) {
2975                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2976                         or die_error(undef, "Error lookup file");
2977         }
2978         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2979                 or die_error(undef, "Open git-annotate failed");
2980         git_header_html();
2981         my $formats_nav =
2982                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2983                         "blob") .
2984                 " | " .
2985                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2986                         "history") .
2987                 " | " .
2988                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2989                         "HEAD");
2990         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2991         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2992         git_print_page_path($file_name, 'blob', $hash_base);
2993         print "<div class=\"page_body\">\n";
2994         print <<HTML;
2995 <table class="blame">
2996   <tr>
2997     <th>Commit</th>
2998     <th>Age</th>
2999     <th>Author</th>
3000     <th>Line</th>
3001     <th>Data</th>
3002   </tr>
3003 HTML
3004         my @line_class = (qw(light dark));
3005         my $line_class_len = scalar (@line_class);
3006         my $line_class_num = $#line_class;
3007         while (my $line = <$fd>) {
3008                 my $long_rev;
3009                 my $short_rev;
3010                 my $author;
3011                 my $time;
3012                 my $lineno;
3013                 my $data;
3014                 my $age;
3015                 my $age_str;
3016                 my $age_class;
3017
3018                 chomp $line;
3019                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3020
3021                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3022                         $long_rev = $1;
3023                         $author   = $2;
3024                         $time     = $3;
3025                         $lineno   = $4;
3026                         $data     = $5;
3027                 } else {
3028                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3029                         next;
3030                 }
3031                 $short_rev  = substr ($long_rev, 0, 8);
3032                 $age        = time () - $time;
3033                 $age_str    = age_string ($age);
3034                 $age_str    =~ s/ /&nbsp;/g;
3035                 $age_class  = age_class($age);
3036                 $author     = esc_html ($author);
3037                 $author     =~ s/ /&nbsp;/g;
3038
3039                 $data = untabify($data);
3040                 $data = esc_html ($data);
3041
3042                 print <<HTML;
3043   <tr class="$line_class[$line_class_num]">
3044     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3045     <td class="$age_class">$age_str</td>
3046     <td>$author</td>
3047     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3048     <td class="pre">$data</td>
3049   </tr>
3050 HTML
3051         } # while (my $line = <$fd>)
3052         print "</table>\n\n";
3053         close $fd
3054                 or print "Reading blob failed.\n";
3055         print "</div>";
3056         git_footer_html();
3057 }
3058
3059 sub git_tags {
3060         my $head = git_get_head_hash($project);
3061         git_header_html();
3062         git_print_page_nav('','', $head,undef,$head);
3063         git_print_header_div('summary', $project);
3064
3065         my @tagslist = git_get_tags_list();
3066         if (@tagslist) {
3067                 git_tags_body(\@tagslist);
3068         }
3069         git_footer_html();
3070 }
3071
3072 sub git_heads {
3073         my $head = git_get_head_hash($project);
3074         git_header_html();
3075         git_print_page_nav('','', $head,undef,$head);
3076         git_print_header_div('summary', $project);
3077
3078         my @headslist = git_get_heads_list();
3079         if (@headslist) {
3080                 git_heads_body(\@headslist, $head);
3081         }
3082         git_footer_html();
3083 }
3084
3085 sub git_blob_plain {
3086         my $expires;
3087
3088         if (!defined $hash) {
3089                 if (defined $file_name) {
3090                         my $base = $hash_base || git_get_head_hash($project);
3091                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3092                                 or die_error(undef, "Error lookup file");
3093                 } else {
3094                         die_error(undef, "No file name defined");
3095                 }
3096         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3097                 # blobs defined by non-textual hash id's can be cached
3098                 $expires = "+1d";
3099         }
3100
3101         my $type = shift;
3102         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3103                 or die_error(undef, "Couldn't cat $file_name, $hash");
3104
3105         $type ||= blob_mimetype($fd, $file_name);
3106
3107         # save as filename, even when no $file_name is given
3108         my $save_as = "$hash";
3109         if (defined $file_name) {
3110                 $save_as = $file_name;
3111         } elsif ($type =~ m/^text\//) {
3112                 $save_as .= '.txt';
3113         }
3114
3115         print $cgi->header(
3116                 -type => "$type",
3117                 -expires=>$expires,
3118                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3119         undef $/;
3120         binmode STDOUT, ':raw';
3121         print <$fd>;
3122         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3123         $/ = "\n";
3124         close $fd;
3125 }
3126
3127 sub git_blob {
3128         my $expires;
3129
3130         if (!defined $hash) {
3131                 if (defined $file_name) {
3132                         my $base = $hash_base || git_get_head_hash($project);
3133                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3134                                 or die_error(undef, "Error lookup file");
3135                 } else {
3136                         die_error(undef, "No file name defined");
3137                 }
3138         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3139                 # blobs defined by non-textual hash id's can be cached
3140                 $expires = "+1d";
3141         }
3142
3143         my ($have_blame) = gitweb_check_feature('blame');
3144         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3145                 or die_error(undef, "Couldn't cat $file_name, $hash");
3146         my $mimetype = blob_mimetype($fd, $file_name);
3147         if ($mimetype !~ m/^text\//) {
3148                 close $fd;
3149                 return git_blob_plain($mimetype);
3150         }
3151         git_header_html(undef, $expires);
3152         my $formats_nav = '';
3153         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3154                 if (defined $file_name) {
3155                         if ($have_blame) {
3156                                 $formats_nav .=
3157                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3158                                                                hash=>$hash, file_name=>$file_name)},
3159                                                 "blame") .
3160                                         " | ";
3161                         }
3162                         $formats_nav .=
3163                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3164                                                        hash=>$hash, file_name=>$file_name)},
3165                                         "history") .
3166                                 " | " .
3167                                 $cgi->a({-href => href(action=>"blob_plain",
3168                                                        hash=>$hash, file_name=>$file_name)},
3169                                         "raw") .
3170                                 " | " .
3171                                 $cgi->a({-href => href(action=>"blob",
3172                                                        hash_base=>"HEAD", file_name=>$file_name)},
3173                                         "HEAD");
3174                 } else {
3175                         $formats_nav .=
3176                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3177                 }
3178                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3179                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3180         } else {
3181                 print "<div class=\"page_nav\">\n" .
3182                       "<br/><br/></div>\n" .
3183                       "<div class=\"title\">$hash</div>\n";
3184         }
3185         git_print_page_path($file_name, "blob", $hash_base);
3186         print "<div class=\"page_body\">\n";
3187         my $nr;
3188         while (my $line = <$fd>) {
3189                 chomp $line;
3190                 $nr++;
3191                 $line = untabify($line);
3192                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3193                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3194         }
3195         close $fd
3196                 or print "Reading blob failed.\n";
3197         print "</div>";
3198         git_footer_html();
3199 }
3200
3201 sub git_tree {
3202         my $have_snapshot = gitweb_have_snapshot();
3203
3204         if (!defined $hash_base) {
3205                 $hash_base = "HEAD";
3206         }
3207         if (!defined $hash) {
3208                 if (defined $file_name) {
3209                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3210                 } else {
3211                         $hash = $hash_base;
3212                 }
3213         }
3214         $/ = "\0";
3215         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3216                 or die_error(undef, "Open git-ls-tree failed");
3217         my @entries = map { chomp; $_ } <$fd>;
3218         close $fd or die_error(undef, "Reading tree failed");
3219         $/ = "\n";
3220
3221         my $refs = git_get_references();
3222         my $ref = format_ref_marker($refs, $hash_base);
3223         git_header_html();
3224         my $basedir = '';
3225         my ($have_blame) = gitweb_check_feature('blame');
3226         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3227                 my @views_nav = ();
3228                 if (defined $file_name) {
3229                         push @views_nav,
3230                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3231                                                        hash=>$hash, file_name=>$file_name)},
3232                                         "history"),
3233                                 $cgi->a({-href => href(action=>"tree",
3234                                                        hash_base=>"HEAD", file_name=>$file_name)},
3235                                         "HEAD"),
3236                 }
3237                 if ($have_snapshot) {
3238                         # FIXME: Should be available when we have no hash base as well.
3239                         push @views_nav,
3240                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3241                                         "snapshot");
3242                 }
3243                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3244                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3245         } else {
3246                 undef $hash_base;
3247                 print "<div class=\"page_nav\">\n";
3248                 print "<br/><br/></div>\n";
3249                 print "<div class=\"title\">$hash</div>\n";
3250         }
3251         if (defined $file_name) {
3252                 $basedir = $file_name;
3253                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3254                         $basedir .= '/';
3255                 }
3256         }
3257         git_print_page_path($file_name, 'tree', $hash_base);
3258         print "<div class=\"page_body\">\n";
3259         print "<table cellspacing=\"0\">\n";
3260         my $alternate = 1;
3261         # '..' (top directory) link if possible
3262         if (defined $hash_base &&
3263             defined $file_name && $file_name =~ m![^/]+$!) {
3264                 if ($alternate) {
3265                         print "<tr class=\"dark\">\n";
3266                 } else {
3267                         print "<tr class=\"light\">\n";
3268                 }
3269                 $alternate ^= 1;
3270
3271                 my $up = $file_name;
3272                 $up =~ s!/?[^/]+$!!;
3273                 undef $up unless $up;
3274                 # based on git_print_tree_entry
3275                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3276                 print '<td class="list">';
3277                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3278                                              file_name=>$up)},
3279                               "..");
3280                 print "</td>\n";
3281                 print "<td class=\"link\"></td>\n";
3282
3283                 print "</tr>\n";
3284         }
3285         foreach my $line (@entries) {
3286                 my %t = parse_ls_tree_line($line, -z => 1);
3287
3288                 if ($alternate) {
3289                         print "<tr class=\"dark\">\n";
3290                 } else {
3291                         print "<tr class=\"light\">\n";
3292                 }
3293                 $alternate ^= 1;
3294
3295                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3296
3297                 print "</tr>\n";
3298         }
3299         print "</table>\n" .
3300               "</div>";
3301         git_footer_html();
3302 }
3303
3304 sub git_snapshot {
3305         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3306         my $have_snapshot = (defined $ctype && defined $suffix);
3307         if (!$have_snapshot) {
3308                 die_error('403 Permission denied', "Permission denied");
3309         }
3310
3311         if (!defined $hash) {
3312                 $hash = git_get_head_hash($project);
3313         }
3314
3315         my $filename = basename($project) . "-$hash.tar.$suffix";
3316
3317         print $cgi->header(
3318                 -type => 'application/x-tar',
3319                 -content_encoding => $ctype,
3320                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3321                 -status => '200 OK');
3322
3323         my $git = git_cmd_str();
3324         my $name = $project;
3325         $name =~ s/\047/\047\\\047\047/g;
3326         open my $fd, "-|",
3327         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3328                 or die_error(undef, "Execute git-tar-tree failed.");
3329         binmode STDOUT, ':raw';
3330         print <$fd>;
3331         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3332         close $fd;
3333
3334 }
3335
3336 sub git_log {
3337         my $head = git_get_head_hash($project);
3338         if (!defined $hash) {
3339                 $hash = $head;
3340         }
3341         if (!defined $page) {
3342                 $page = 0;
3343         }
3344         my $refs = git_get_references();
3345
3346         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3347         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3348                 or die_error(undef, "Open git-rev-list failed");
3349         my @revlist = map { chomp; $_ } <$fd>;
3350         close $fd;
3351
3352         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3353
3354         git_header_html();
3355         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3356
3357         if (!@revlist) {
3358                 my %co = parse_commit($hash);
3359
3360                 git_print_header_div('summary', $project);
3361                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3362         }
3363         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3364                 my $commit = $revlist[$i];
3365                 my $ref = format_ref_marker($refs, $commit);
3366                 my %co = parse_commit($commit);
3367                 next if !%co;
3368                 my %ad = parse_date($co{'author_epoch'});
3369                 git_print_header_div('commit',
3370                                "<span class=\"age\">$co{'age_string'}</span>" .
3371                                esc_html($co{'title'}) . $ref,
3372                                $commit);
3373                 print "<div class=\"title_text\">\n" .
3374                       "<div class=\"log_link\">\n" .
3375                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3376                       " | " .
3377                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3378                       " | " .
3379                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3380                       "<br/>\n" .
3381                       "</div>\n" .
3382                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3383                       "</div>\n";
3384
3385                 print "<div class=\"log_body\">\n";
3386                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3387                 print "</div>\n";
3388         }
3389         git_footer_html();
3390 }
3391
3392 sub git_commit {
3393         my %co = parse_commit($hash);
3394         if (!%co) {
3395                 die_error(undef, "Unknown commit object");
3396         }
3397         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3398         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3399
3400         my $parent = $co{'parent'};
3401         if (!defined $parent) {
3402                 $parent = "--root";
3403         }
3404         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3405                 @diff_opts, $parent, $hash, "--"
3406                 or die_error(undef, "Open git-diff-tree failed");
3407         my @difftree = map { chomp; $_ } <$fd>;
3408         close $fd or die_error(undef, "Reading git-diff-tree failed");
3409
3410         # non-textual hash id's can be cached
3411         my $expires;
3412         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3413                 $expires = "+1d";
3414         }
3415         my $refs = git_get_references();
3416         my $ref = format_ref_marker($refs, $co{'id'});
3417
3418         my $have_snapshot = gitweb_have_snapshot();
3419
3420         my @views_nav = ();
3421         if (defined $file_name && defined $co{'parent'}) {
3422                 push @views_nav,
3423                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3424                                 "blame");
3425         }
3426         git_header_html(undef, $expires);
3427         git_print_page_nav('commit', '',
3428                            $hash, $co{'tree'}, $hash,
3429                            join (' | ', @views_nav));
3430
3431         if (defined $co{'parent'}) {
3432                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3433         } else {
3434                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3435         }
3436         print "<div class=\"title_text\">\n" .
3437               "<table cellspacing=\"0\">\n";
3438         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3439               "<tr>" .
3440               "<td></td><td> $ad{'rfc2822'}";
3441         if ($ad{'hour_local'} < 6) {
3442                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3443                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3444         } else {
3445                 printf(" (%02d:%02d %s)",
3446                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3447         }
3448         print "</td>" .
3449               "</tr>\n";
3450         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3451         print "<tr><td></td><td> $cd{'rfc2822'}" .
3452               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3453               "</td></tr>\n";
3454         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3455         print "<tr>" .
3456               "<td>tree</td>" .
3457               "<td class=\"sha1\">" .
3458               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3459                        class => "list"}, $co{'tree'}) .
3460               "</td>" .
3461               "<td class=\"link\">" .
3462               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3463                       "tree");
3464         if ($have_snapshot) {
3465                 print " | " .
3466                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3467         }
3468         print "</td>" .
3469               "</tr>\n";
3470         my $parents = $co{'parents'};
3471         foreach my $par (@$parents) {
3472                 print "<tr>" .
3473                       "<td>parent</td>" .
3474                       "<td class=\"sha1\">" .
3475                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3476                                class => "list"}, $par) .
3477                       "</td>" .
3478                       "<td class=\"link\">" .
3479                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3480                       " | " .
3481                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3482                       "</td>" .
3483                       "</tr>\n";
3484         }
3485         print "</table>".
3486               "</div>\n";
3487
3488         print "<div class=\"page_body\">\n";
3489         git_print_log($co{'comment'});
3490         print "</div>\n";
3491
3492         git_difftree_body(\@difftree, $hash, $parent);
3493
3494         git_footer_html();
3495 }
3496
3497 sub git_blobdiff {
3498         my $format = shift || 'html';
3499
3500         my $fd;
3501         my @difftree;
3502         my %diffinfo;
3503         my $expires;
3504
3505         # preparing $fd and %diffinfo for git_patchset_body
3506         # new style URI
3507         if (defined $hash_base && defined $hash_parent_base) {
3508                 if (defined $file_name) {
3509                         # read raw output
3510                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3511                                 $hash_parent_base, $hash_base,
3512                                 "--", $file_name
3513                                 or die_error(undef, "Open git-diff-tree failed");
3514                         @difftree = map { chomp; $_ } <$fd>;
3515                         close $fd
3516                                 or die_error(undef, "Reading git-diff-tree failed");
3517                         @difftree
3518                                 or die_error('404 Not Found', "Blob diff not found");
3519
3520                 } elsif (defined $hash &&
3521                          $hash =~ /[0-9a-fA-F]{40}/) {
3522                         # try to find filename from $hash
3523
3524                         # read filtered raw output
3525                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3526                                 $hash_parent_base, $hash_base, "--"
3527                                 or die_error(undef, "Open git-diff-tree failed");
3528                         @difftree =
3529                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3530                                 # $hash == to_id
3531                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3532                                 map { chomp; $_ } <$fd>;
3533                         close $fd
3534                                 or die_error(undef, "Reading git-diff-tree failed");
3535                         @difftree
3536                                 or die_error('404 Not Found', "Blob diff not found");
3537
3538                 } else {
3539                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3540                 }
3541
3542                 if (@difftree > 1) {
3543                         die_error('404 Not Found', "Ambiguous blob diff specification");
3544                 }
3545
3546                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3547                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3548                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3549
3550                 $hash_parent ||= $diffinfo{'from_id'};
3551                 $hash        ||= $diffinfo{'to_id'};
3552
3553                 # non-textual hash id's can be cached
3554                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3555                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3556                         $expires = '+1d';
3557                 }
3558
3559                 # open patch output
3560                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3561                         '-p', $hash_parent_base, $hash_base,
3562                         "--", $file_name
3563                         or die_error(undef, "Open git-diff-tree failed");
3564         }
3565
3566         # old/legacy style URI
3567         if (!%diffinfo && # if new style URI failed
3568             defined $hash && defined $hash_parent) {
3569                 # fake git-diff-tree raw output
3570                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3571                 $diffinfo{'from_id'} = $hash_parent;
3572                 $diffinfo{'to_id'}   = $hash;
3573                 if (defined $file_name) {
3574                         if (defined $file_parent) {
3575                                 $diffinfo{'status'} = '2';
3576                                 $diffinfo{'from_file'} = $file_parent;
3577                                 $diffinfo{'to_file'}   = $file_name;
3578                         } else { # assume not renamed
3579                                 $diffinfo{'status'} = '1';
3580                                 $diffinfo{'from_file'} = $file_name;
3581                                 $diffinfo{'to_file'}   = $file_name;
3582                         }
3583                 } else { # no filename given
3584                         $diffinfo{'status'} = '2';
3585                         $diffinfo{'from_file'} = $hash_parent;
3586                         $diffinfo{'to_file'}   = $hash;
3587                 }
3588
3589                 # non-textual hash id's can be cached
3590                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3591                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3592                         $expires = '+1d';
3593                 }
3594
3595                 # open patch output
3596                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3597                         $hash_parent, $hash, "--"
3598                         or die_error(undef, "Open git-diff failed");
3599         } else  {
3600                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3601                         unless %diffinfo;
3602         }
3603
3604         # header
3605         if ($format eq 'html') {
3606                 my $formats_nav =
3607                         $cgi->a({-href => href(action=>"blobdiff_plain",
3608                                                hash=>$hash, hash_parent=>$hash_parent,
3609                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3610                                                file_name=>$file_name, file_parent=>$file_parent)},
3611                                 "raw");
3612                 git_header_html(undef, $expires);
3613                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3614                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3615                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3616                 } else {
3617                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3618                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3619                 }
3620                 if (defined $file_name) {
3621                         git_print_page_path($file_name, "blob", $hash_base);
3622                 } else {
3623                         print "<div class=\"page_path\"></div>\n";
3624                 }
3625
3626         } elsif ($format eq 'plain') {
3627                 print $cgi->header(
3628                         -type => 'text/plain',
3629                         -charset => 'utf-8',
3630                         -expires => $expires,
3631                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3632
3633                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3634
3635         } else {
3636                 die_error(undef, "Unknown blobdiff format");
3637         }
3638
3639         # patch
3640         if ($format eq 'html') {
3641                 print "<div class=\"page_body\">\n";
3642
3643                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3644                 close $fd;
3645
3646                 print "</div>\n"; # class="page_body"
3647                 git_footer_html();
3648
3649         } else {
3650                 while (my $line = <$fd>) {
3651                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3652                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3653
3654                         print $line;
3655
3656                         last if $line =~ m!^\+\+\+!;
3657                 }
3658                 local $/ = undef;
3659                 print <$fd>;
3660                 close $fd;
3661         }
3662 }
3663
3664 sub git_blobdiff_plain {
3665         git_blobdiff('plain');
3666 }
3667
3668 sub git_commitdiff {
3669         my $format = shift || 'html';
3670         my %co = parse_commit($hash);
3671         if (!%co) {
3672                 die_error(undef, "Unknown commit object");
3673         }
3674
3675         # we need to prepare $formats_nav before any parameter munging
3676         my $formats_nav;
3677         if ($format eq 'html') {
3678                 $formats_nav =
3679                         $cgi->a({-href => href(action=>"commitdiff_plain",
3680                                                hash=>$hash, hash_parent=>$hash_parent)},
3681                                 "raw");
3682
3683                 if (defined $hash_parent) {
3684                         # commitdiff with two commits given
3685                         my $hash_parent_short = $hash_parent;
3686                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3687                                 $hash_parent_short = substr($hash_parent, 0, 7);
3688                         }
3689                         $formats_nav .=
3690                                 ' (from: ' .
3691                                 $cgi->a({-href => href(action=>"commitdiff",
3692                                                        hash=>$hash_parent)},
3693                                         esc_html($hash_parent_short)) .
3694                                 ')';
3695                 } elsif (!$co{'parent'}) {
3696                         # --root commitdiff
3697                         $formats_nav .= ' (initial)';
3698                 } elsif (scalar @{$co{'parents'}} == 1) {
3699                         # single parent commit
3700                         $formats_nav .=
3701                                 ' (parent: ' .
3702                                 $cgi->a({-href => href(action=>"commitdiff",
3703                                                        hash=>$co{'parent'})},
3704                                         esc_html(substr($co{'parent'}, 0, 7))) .
3705                                 ')';
3706                 } else {
3707                         # merge commit
3708                         $formats_nav .=
3709                                 ' (merge: ' .
3710                                 join(' ', map {
3711                                         $cgi->a({-href => href(action=>"commitdiff",
3712                                                                hash=>$_)},
3713                                                 esc_html(substr($_, 0, 7)));
3714                                 } @{$co{'parents'}} ) .
3715                                 ')';
3716                 }
3717         }
3718
3719         if (!defined $hash_parent) {
3720                 $hash_parent = $co{'parent'} || '--root';
3721         }
3722
3723         # read commitdiff
3724         my $fd;
3725         my @difftree;
3726         if ($format eq 'html') {
3727                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3728                         "--no-commit-id", "--patch-with-raw", "--full-index",
3729                         $hash_parent, $hash, "--"
3730                         or die_error(undef, "Open git-diff-tree failed");
3731
3732                 while (chomp(my $line = <$fd>)) {
3733                         # empty line ends raw part of diff-tree output
3734                         last unless $line;
3735                         push @difftree, $line;
3736                 }
3737
3738         } elsif ($format eq 'plain') {
3739                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3740                         '-p', $hash_parent, $hash, "--"
3741                         or die_error(undef, "Open git-diff-tree failed");
3742
3743         } else {
3744                 die_error(undef, "Unknown commitdiff format");
3745         }
3746
3747         # non-textual hash id's can be cached
3748         my $expires;
3749         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3750                 $expires = "+1d";
3751         }
3752
3753         # write commit message
3754         if ($format eq 'html') {
3755                 my $refs = git_get_references();
3756                 my $ref = format_ref_marker($refs, $co{'id'});
3757
3758                 git_header_html(undef, $expires);
3759                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3760                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3761                 git_print_authorship(\%co);
3762                 print "<div class=\"page_body\">\n";
3763                 if (@{$co{'comment'}} > 1) {
3764                         print "<div class=\"log\">\n";
3765                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3766                         print "</div>\n"; # class="log"
3767                 }
3768
3769         } elsif ($format eq 'plain') {
3770                 my $refs = git_get_references("tags");
3771                 my $tagname = git_get_rev_name_tags($hash);
3772                 my $filename = basename($project) . "-$hash.patch";
3773
3774                 print $cgi->header(
3775                         -type => 'text/plain',
3776                         -charset => 'utf-8',
3777                         -expires => $expires,
3778                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3779                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3780                 print <<TEXT;
3781 From: $co{'author'}
3782 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3783 Subject: $co{'title'}
3784 TEXT
3785                 print "X-Git-Tag: $tagname\n" if $tagname;
3786                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3787
3788                 foreach my $line (@{$co{'comment'}}) {
3789                         print "$line\n";
3790                 }
3791                 print "---\n\n";
3792         }
3793
3794         # write patch
3795         if ($format eq 'html') {
3796                 git_difftree_body(\@difftree, $hash, $hash_parent);
3797                 print "<br/>\n";
3798
3799                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3800                 close $fd;
3801                 print "</div>\n"; # class="page_body"
3802                 git_footer_html();
3803
3804         } elsif ($format eq 'plain') {
3805                 local $/ = undef;
3806                 print <$fd>;
3807                 close $fd
3808                         or print "Reading git-diff-tree failed\n";
3809         }
3810 }
3811
3812 sub git_commitdiff_plain {
3813         git_commitdiff('plain');
3814 }
3815
3816 sub git_history {
3817         if (!defined $hash_base) {
3818                 $hash_base = git_get_head_hash($project);
3819         }
3820         if (!defined $page) {
3821                 $page = 0;
3822         }
3823         my $ftype;
3824         my %co = parse_commit($hash_base);
3825         if (!%co) {
3826                 die_error(undef, "Unknown commit object");
3827         }
3828
3829         my $refs = git_get_references();
3830         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3831
3832         if (!defined $hash && defined $file_name) {
3833                 $hash = git_get_hash_by_path($hash_base, $file_name);
3834         }
3835         if (defined $hash) {
3836                 $ftype = git_get_type($hash);
3837         }
3838
3839         open my $fd, "-|",
3840                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3841                         or die_error(undef, "Open git-rev-list-failed");
3842         my @revlist = map { chomp; $_ } <$fd>;
3843         close $fd
3844                 or die_error(undef, "Reading git-rev-list failed");
3845
3846         my $paging_nav = '';
3847         if ($page > 0) {
3848                 $paging_nav .=
3849                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3850                                                file_name=>$file_name)},
3851                                 "first");
3852                 $paging_nav .= " &sdot; " .
3853                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3854                                                file_name=>$file_name, page=>$page-1),
3855                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3856         } else {
3857                 $paging_nav .= "first";
3858                 $paging_nav .= " &sdot; prev";
3859         }
3860         if ($#revlist >= (100 * ($page+1)-1)) {
3861                 $paging_nav .= " &sdot; " .
3862                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3863                                                file_name=>$file_name, page=>$page+1),
3864                                  -accesskey => "n", -title => "Alt-n"}, "next");
3865         } else {
3866                 $paging_nav .= " &sdot; next";
3867         }
3868         my $next_link = '';
3869         if ($#revlist >= (100 * ($page+1)-1)) {
3870                 $next_link =
3871                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3872                                                file_name=>$file_name, page=>$page+1),
3873                                  -title => "Alt-n"}, "next");
3874         }
3875
3876         git_header_html();
3877         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3878         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3879         git_print_page_path($file_name, $ftype, $hash_base);
3880
3881         git_history_body(\@revlist, ($page * 100), $#revlist,
3882                          $refs, $hash_base, $ftype, $next_link);
3883
3884         git_footer_html();
3885 }
3886
3887 sub git_search {
3888         if (!defined $searchtext) {
3889                 die_error(undef, "Text field empty");
3890         }
3891         if (!defined $hash) {
3892                 $hash = git_get_head_hash($project);
3893         }
3894         my %co = parse_commit($hash);
3895         if (!%co) {
3896                 die_error(undef, "Unknown commit object");
3897         }
3898
3899         $searchtype ||= 'commit';
3900         if ($searchtype eq 'pickaxe') {
3901                 # pickaxe may take all resources of your box and run for several minutes
3902                 # with every query - so decide by yourself how public you make this feature
3903                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3904                 if (!$have_pickaxe) {
3905                         die_error('403 Permission denied', "Permission denied");
3906                 }
3907         }
3908
3909         git_header_html();
3910         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3911         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3912
3913         print "<table cellspacing=\"0\">\n";
3914         my $alternate = 1;
3915         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3916                 $/ = "\0";
3917                 open my $fd, "-|", git_cmd(), "rev-list",
3918                         "--header", "--parents", $hash, "--"
3919                         or next;
3920                 while (my $commit_text = <$fd>) {
3921                         if (!grep m/$searchtext/i, $commit_text) {
3922                                 next;
3923                         }
3924                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3925                                 next;
3926                         }
3927                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3928                                 next;
3929                         }
3930                         my @commit_lines = split "\n", $commit_text;
3931                         my %co = parse_commit(undef, \@commit_lines);
3932                         if (!%co) {
3933                                 next;
3934                         }
3935                         if ($alternate) {
3936                                 print "<tr class=\"dark\">\n";
3937                         } else {
3938                                 print "<tr class=\"light\">\n";
3939                         }
3940                         $alternate ^= 1;
3941                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3942                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3943                               "<td>" .
3944                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3945                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3946                         my $comment = $co{'comment'};
3947                         foreach my $line (@$comment) {
3948                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3949                                         my $lead = esc_html($1) || "";
3950                                         $lead = chop_str($lead, 30, 10);
3951                                         my $match = esc_html($2) || "";
3952                                         my $trail = esc_html($3) || "";
3953                                         $trail = chop_str($trail, 30, 10);
3954                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3955                                         print chop_str($text, 80, 5) . "<br/>\n";
3956                                 }
3957                         }
3958                         print "</td>\n" .
3959                               "<td class=\"link\">" .
3960                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3961                               " | " .
3962                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3963                         print "</td>\n" .
3964                               "</tr>\n";
3965                 }
3966                 close $fd;
3967         }
3968
3969         if ($searchtype eq 'pickaxe') {
3970                 $/ = "\n";
3971                 my $git_command = git_cmd_str();
3972                 open my $fd, "-|", "$git_command rev-list $hash | " .
3973                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3974                 undef %co;
3975                 my @files;
3976                 while (my $line = <$fd>) {
3977                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3978                                 my %set;
3979                                 $set{'file'} = $6;
3980                                 $set{'from_id'} = $3;
3981                                 $set{'to_id'} = $4;
3982                                 $set{'id'} = $set{'to_id'};
3983                                 if ($set{'id'} =~ m/0{40}/) {
3984                                         $set{'id'} = $set{'from_id'};
3985                                 }
3986                                 if ($set{'id'} =~ m/0{40}/) {
3987                                         next;
3988                                 }
3989                                 push @files, \%set;
3990                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3991                                 if (%co) {
3992                                         if ($alternate) {
3993                                                 print "<tr class=\"dark\">\n";
3994                                         } else {
3995                                                 print "<tr class=\"light\">\n";
3996                                         }
3997                                         $alternate ^= 1;
3998                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3999                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4000                                               "<td>" .
4001                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4002                                                       -class => "list subject"},
4003                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4004                                         while (my $setref = shift @files) {
4005                                                 my %set = %$setref;
4006                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4007                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4008                                                               -class => "list"},
4009                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4010                                                       "<br/>\n";
4011                                         }
4012                                         print "</td>\n" .
4013                                               "<td class=\"link\">" .
4014                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4015                                               " | " .
4016                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4017                                         print "</td>\n" .
4018                                               "</tr>\n";
4019                                 }
4020                                 %co = parse_commit($1);
4021                         }
4022                 }
4023                 close $fd;
4024         }
4025         print "</table>\n";
4026         git_footer_html();
4027 }
4028
4029 sub git_search_help {
4030         git_header_html();
4031         git_print_page_nav('','', $hash,$hash,$hash);
4032         print <<EOT;
4033 <dl>
4034 <dt><b>commit</b></dt>
4035 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4036 <dt><b>author</b></dt>
4037 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4038 <dt><b>committer</b></dt>
4039 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4040 EOT
4041         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4042         if ($have_pickaxe) {
4043                 print <<EOT;
4044 <dt><b>pickaxe</b></dt>
4045 <dd>All commits that caused the string to appear or disappear from any file (changes that
4046 added, removed or "modified" the string) will be listed. This search can take a while and
4047 takes a lot of strain on the server, so please use it wisely.</dd>
4048 EOT
4049         }
4050         print "</dl>\n";
4051         git_footer_html();
4052 }
4053
4054 sub git_shortlog {
4055         my $head = git_get_head_hash($project);
4056         if (!defined $hash) {
4057                 $hash = $head;
4058         }
4059         if (!defined $page) {
4060                 $page = 0;
4061         }
4062         my $refs = git_get_references();
4063
4064         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4065         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4066                 or die_error(undef, "Open git-rev-list failed");
4067         my @revlist = map { chomp; $_ } <$fd>;
4068         close $fd;
4069
4070         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4071         my $next_link = '';
4072         if ($#revlist >= (100 * ($page+1)-1)) {
4073                 $next_link =
4074                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4075                                  -title => "Alt-n"}, "next");
4076         }
4077
4078
4079         git_header_html();
4080         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4081         git_print_header_div('summary', $project);
4082
4083         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4084
4085         git_footer_html();
4086 }
4087
4088 ## ......................................................................
4089 ## feeds (RSS, OPML)
4090
4091 sub git_rss {
4092         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4093         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4094                 git_get_head_hash($project), "--"
4095                 or die_error(undef, "Open git-rev-list failed");
4096         my @revlist = map { chomp; $_ } <$fd>;
4097         close $fd or die_error(undef, "Reading git-rev-list failed");
4098         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4099         print <<XML;
4100 <?xml version="1.0" encoding="utf-8"?>
4101 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4102 <channel>
4103 <title>$project $my_uri $my_url</title>
4104 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
4105 <description>$project log</description>
4106 <language>en</language>
4107 XML
4108
4109         for (my $i = 0; $i <= $#revlist; $i++) {
4110                 my $commit = $revlist[$i];
4111                 my %co = parse_commit($commit);
4112                 # we read 150, we always show 30 and the ones more recent than 48 hours
4113                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
4114                         last;
4115                 }
4116                 my %cd = parse_date($co{'committer_epoch'});
4117                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4118                         $co{'parent'}, $co{'id'}, "--"
4119                         or next;
4120                 my @difftree = map { chomp; $_ } <$fd>;
4121                 close $fd
4122                         or next;
4123                 print "<item>\n" .
4124                       "<title>" .
4125                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
4126                       "</title>\n" .
4127                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
4128                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4129                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
4130                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
4131                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
4132                       "<content:encoded>" .
4133                       "<![CDATA[\n";
4134                 my $comment = $co{'comment'};
4135                 foreach my $line (@$comment) {
4136                         $line = to_utf8($line);
4137                         print "$line<br/>\n";
4138                 }
4139                 print "<br/>\n";
4140                 foreach my $line (@difftree) {
4141                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
4142                                 next;
4143                         }
4144                         my $file = esc_path(unquote($7));
4145                         $file = to_utf8($file);
4146                         print "$file<br/>\n";
4147                 }
4148                 print "]]>\n" .
4149                       "</content:encoded>\n" .
4150                       "</item>\n";
4151         }
4152         print "</channel></rss>";
4153 }
4154
4155 sub git_opml {
4156         my @list = git_get_projects_list();
4157
4158         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4159         print <<XML;
4160 <?xml version="1.0" encoding="utf-8"?>
4161 <opml version="1.0">
4162 <head>
4163   <title>$site_name OPML Export</title>
4164 </head>
4165 <body>
4166 <outline text="git RSS feeds">
4167 XML
4168
4169         foreach my $pr (@list) {
4170                 my %proj = %$pr;
4171                 my $head = git_get_head_hash($proj{'path'});
4172                 if (!defined $head) {
4173                         next;
4174                 }
4175                 $git_dir = "$projectroot/$proj{'path'}";
4176                 my %co = parse_commit($head);
4177                 if (!%co) {
4178                         next;
4179                 }
4180
4181                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4182                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4183                 my $html = "$my_url?p=$proj{'path'};a=summary";
4184                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4185         }
4186         print <<XML;
4187 </outline>
4188 </body>
4189 </opml>
4190 XML
4191 }