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 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # You define site-wide feature defaults here; override them with
  98 # $GITWEB_CONFIG as necessary.
  99 our %feature = (
 100         # feature => {
 101         #       'sub' => feature-sub (subroutine),
 102         #       'override' => allow-override (boolean),
 103         #       'default' => [ default options...] (array reference)}
 104         #
 105         # if feature is overridable (it means that allow-override has true value),
 106         # then feature-sub will be called with default options as parameters;
 107         # return value of feature-sub indicates if to enable specified feature
 108         #
 109         # if there is no 'sub' key (no feature-sub), then feature cannot be
 110         # overriden
 111         #
 112         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 113
 114         # Enable the 'blame' blob view, showing the last commit that modified
 115         # each line in the file. This can be very CPU-intensive.
 116
 117         # To enable system wide have in $GITWEB_CONFIG
 118         # $feature{'blame'}{'default'} = [1];
 119         # To have project specific config enable override in $GITWEB_CONFIG
 120         # $feature{'blame'}{'override'} = 1;
 121         # and in project config gitweb.blame = 0|1;
 122         'blame' => {
 123                 'sub' => \&feature_blame,
 124                 'override' => 0,
 125                 'default' => [0]},
 126
 127         # Enable the 'snapshot' link, providing a compressed tarball of any
 128         # tree. This can potentially generate high traffic if you have large
 129         # project.
 130
 131         # To disable system wide have in $GITWEB_CONFIG
 132         # $feature{'snapshot'}{'default'} = [undef];
 133         # To have project specific config enable override in $GITWEB_CONFIG
 134         # $feature{'snapshot'}{'override'} = 1;
 135         # and in project config gitweb.snapshot = none|gzip|bzip2;
 136         'snapshot' => {
 137                 'sub' => \&feature_snapshot,
 138                 'override' => 0,
 139                 #         => [content-encoding, suffix, program]
 140                 'default' => ['x-gzip', 'gz', 'gzip']},
 141
 142         # Enable text search, which will list the commits which match author,
 143         # committer or commit text to a given string.  Enabled by default.
 144         # Project specific override is not supported.
 145         'search' => {
 146                 'override' => 0,
 147                 'default' => [1]},
 148
 149         # Enable the pickaxe search, which will list the commits that modified
 150         # a given string in a file. This can be practical and quite faster
 151         # alternative to 'blame', but still potentially CPU-intensive.
 152
 153         # To enable system wide have in $GITWEB_CONFIG
 154         # $feature{'pickaxe'}{'default'} = [1];
 155         # To have project specific config enable override in $GITWEB_CONFIG
 156         # $feature{'pickaxe'}{'override'} = 1;
 157         # and in project config gitweb.pickaxe = 0|1;
 158         'pickaxe' => {
 159                 'sub' => \&feature_pickaxe,
 160                 'override' => 0,
 161                 'default' => [1]},
 162
 163         # Make gitweb use an alternative format of the URLs which can be
 164         # more readable and natural-looking: project name is embedded
 165         # directly in the path and the query string contains other
 166         # auxiliary information. All gitweb installations recognize
 167         # URL in either format; this configures in which formats gitweb
 168         # generates links.
 169
 170         # To enable system wide have in $GITWEB_CONFIG
 171         # $feature{'pathinfo'}{'default'} = [1];
 172         # Project specific override is not supported.
 173
 174         # Note that you will need to change the default location of CSS,
 175         # favicon, logo and possibly other files to an absolute URL. Also,
 176         # if gitweb.cgi serves as your indexfile, you will need to force
 177         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 178         'pathinfo' => {
 179                 'override' => 0,
 180                 'default' => [0]},
 181
 182         # Make gitweb consider projects in project root subdirectories
 183         # to be forks of existing projects. Given project $projname.git,
 184         # projects matching $projname/*.git will not be shown in the main
 185         # projects list, instead a '+' mark will be added to $projname
 186         # there and a 'forks' view will be enabled for the project, listing
 187         # all the forks. If project list is taken from a file, forks have
 188         # to be listed after the main project.
 189
 190         # To enable system wide have in $GITWEB_CONFIG
 191         # $feature{'forks'}{'default'} = [1];
 192         # Project specific override is not supported.
 193         'forks' => {
 194                 'override' => 0,
 195                 'default' => [0]},
 196 );
 197
 198 sub gitweb_check_feature {
 199         my ($name) = @_;
 200         return unless exists $feature{$name};
 201         my ($sub, $override, @defaults) = (
 202                 $feature{$name}{'sub'},
 203                 $feature{$name}{'override'},
 204                 @{$feature{$name}{'default'}});
 205         if (!$override) { return @defaults; }
 206         if (!defined $sub) {
 207                 warn "feature $name is not overrideable";
 208                 return @defaults;
 209         }
 210         return $sub->(@defaults);
 211 }
 212
 213 sub feature_blame {
 214         my ($val) = git_get_project_config('blame', '--bool');
 215
 216         if ($val eq 'true') {
 217                 return 1;
 218         } elsif ($val eq 'false') {
 219                 return 0;
 220         }
 221
 222         return $_[0];
 223 }
 224
 225 sub feature_snapshot {
 226         my ($ctype, $suffix, $command) = @_;
 227
 228         my ($val) = git_get_project_config('snapshot');
 229
 230         if ($val eq 'gzip') {
 231                 return ('x-gzip', 'gz', 'gzip');
 232         } elsif ($val eq 'bzip2') {
 233                 return ('x-bzip2', 'bz2', 'bzip2');
 234         } elsif ($val eq 'none') {
 235                 return ();
 236         }
 237
 238         return ($ctype, $suffix, $command);
 239 }
 240
 241 sub gitweb_have_snapshot {
 242         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 243         my $have_snapshot = (defined $ctype && defined $suffix);
 244
 245         return $have_snapshot;
 246 }
 247
 248 sub feature_pickaxe {
 249         my ($val) = git_get_project_config('pickaxe', '--bool');
 250
 251         if ($val eq 'true') {
 252                 return (1);
 253         } elsif ($val eq 'false') {
 254                 return (0);
 255         }
 256
 257         return ($_[0]);
 258 }
 259
 260 # checking HEAD file with -e is fragile if the repository was
 261 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 262 # and then pruned.
 263 sub check_head_link {
 264         my ($dir) = @_;
 265         my $headfile = "$dir/HEAD";
 266         return ((-e $headfile) ||
 267                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 268 }
 269
 270 sub check_export_ok {
 271         my ($dir) = @_;
 272         return (check_head_link($dir) &&
 273                 (!$export_ok || -e "$dir/$export_ok"));
 274 }
 275
 276 # rename detection options for git-diff and git-diff-tree
 277 # - default is '-M', with the cost proportional to
 278 #   (number of removed files) * (number of new files).
 279 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 280 #   (number of changed files + number of removed files) * (number of new files)
 281 # - even more costly is '-C', '--find-copies-harder' with cost
 282 #   (number of files in the original tree) * (number of new files)
 283 # - one might want to include '-B' option, e.g. '-B', '-M'
 284 our @diff_opts = ('-M'); # taken from git_commit
 285
 286 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 287 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 288
 289 # version of the core git binary
 290 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 291
 292 $projects_list ||= $projectroot;
 293
 294 # ======================================================================
 295 # input validation and dispatch
 296 our $action = $cgi->param('a');
 297 if (defined $action) {
 298         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 299                 die_error(undef, "Invalid action parameter");
 300         }
 301 }
 302
 303 # parameters which are pathnames
 304 our $project = $cgi->param('p');
 305 if (defined $project) {
 306         if (!validate_pathname($project) ||
 307             !(-d "$projectroot/$project") ||
 308             !check_head_link("$projectroot/$project") ||
 309             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 310             ($strict_export && !project_in_list($project))) {
 311                 undef $project;
 312                 die_error(undef, "No such project");
 313         }
 314 }
 315
 316 our $file_name = $cgi->param('f');
 317 if (defined $file_name) {
 318         if (!validate_pathname($file_name)) {
 319                 die_error(undef, "Invalid file parameter");
 320         }
 321 }
 322
 323 our $file_parent = $cgi->param('fp');
 324 if (defined $file_parent) {
 325         if (!validate_pathname($file_parent)) {
 326                 die_error(undef, "Invalid file parent parameter");
 327         }
 328 }
 329
 330 # parameters which are refnames
 331 our $hash = $cgi->param('h');
 332 if (defined $hash) {
 333         if (!validate_refname($hash)) {
 334                 die_error(undef, "Invalid hash parameter");
 335         }
 336 }
 337
 338 our $hash_parent = $cgi->param('hp');
 339 if (defined $hash_parent) {
 340         if (!validate_refname($hash_parent)) {
 341                 die_error(undef, "Invalid hash parent parameter");
 342         }
 343 }
 344
 345 our $hash_base = $cgi->param('hb');
 346 if (defined $hash_base) {
 347         if (!validate_refname($hash_base)) {
 348                 die_error(undef, "Invalid hash base parameter");
 349         }
 350 }
 351
 352 our $hash_parent_base = $cgi->param('hpb');
 353 if (defined $hash_parent_base) {
 354         if (!validate_refname($hash_parent_base)) {
 355                 die_error(undef, "Invalid hash parent base parameter");
 356         }
 357 }
 358
 359 # other parameters
 360 our $page = $cgi->param('pg');
 361 if (defined $page) {
 362         if ($page =~ m/[^0-9]/) {
 363                 die_error(undef, "Invalid page parameter");
 364         }
 365 }
 366
 367 our $searchtext = $cgi->param('s');
 368 if (defined $searchtext) {
 369         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 370                 die_error(undef, "Invalid search parameter");
 371         }
 372         if (length($searchtext) < 2) {
 373                 die_error(undef, "At least two characters are required for search parameter");
 374         }
 375         $searchtext = quotemeta $searchtext;
 376 }
 377
 378 our $searchtype = $cgi->param('st');
 379 if (defined $searchtype) {
 380         if ($searchtype =~ m/[^a-z]/) {
 381                 die_error(undef, "Invalid searchtype parameter");
 382         }
 383 }
 384
 385 # now read PATH_INFO and use it as alternative to parameters
 386 sub evaluate_path_info {
 387         return if defined $project;
 388         my $path_info = $ENV{"PATH_INFO"};
 389         return if !$path_info;
 390         $path_info =~ s,^/+,,;
 391         return if !$path_info;
 392         # find which part of PATH_INFO is project
 393         $project = $path_info;
 394         $project =~ s,/+$,,;
 395         while ($project && !check_head_link("$projectroot/$project")) {
 396                 $project =~ s,/*[^/]*$,,;
 397         }
 398         # validate project
 399         $project = validate_pathname($project);
 400         if (!$project ||
 401             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 402             ($strict_export && !project_in_list($project))) {
 403                 undef $project;
 404                 return;
 405         }
 406         # do not change any parameters if an action is given using the query string
 407         return if $action;
 408         $path_info =~ s,^$project/*,,;
 409         my ($refname, $pathname) = split(/:/, $path_info, 2);
 410         if (defined $pathname) {
 411                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 412                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 413                 $pathname =~ s,^/+,,;
 414                 if (!$pathname || substr($pathname, -1) eq "/") {
 415                         $action  ||= "tree";
 416                         $pathname =~ s,/$,,;
 417                 } else {
 418                         $action  ||= "blob_plain";
 419                 }
 420                 $hash_base ||= validate_refname($refname);
 421                 $file_name ||= validate_pathname($pathname);
 422         } elsif (defined $refname) {
 423                 # we got "project.git/branch"
 424                 $action ||= "shortlog";
 425                 $hash   ||= validate_refname($refname);
 426         }
 427 }
 428 evaluate_path_info();
 429
 430 # path to the current git repository
 431 our $git_dir;
 432 $git_dir = "$projectroot/$project" if $project;
 433
 434 # dispatch
 435 my %actions = (
 436         "blame" => \&git_blame2,
 437         "blobdiff" => \&git_blobdiff,
 438         "blobdiff_plain" => \&git_blobdiff_plain,
 439         "blob" => \&git_blob,
 440         "blob_plain" => \&git_blob_plain,
 441         "commitdiff" => \&git_commitdiff,
 442         "commitdiff_plain" => \&git_commitdiff_plain,
 443         "commit" => \&git_commit,
 444         "forks" => \&git_forks,
 445         "heads" => \&git_heads,
 446         "history" => \&git_history,
 447         "log" => \&git_log,
 448         "rss" => \&git_rss,
 449         "atom" => \&git_atom,
 450         "search" => \&git_search,
 451         "search_help" => \&git_search_help,
 452         "shortlog" => \&git_shortlog,
 453         "summary" => \&git_summary,
 454         "tag" => \&git_tag,
 455         "tags" => \&git_tags,
 456         "tree" => \&git_tree,
 457         "snapshot" => \&git_snapshot,
 458         "object" => \&git_object,
 459         # those below don't need $project
 460         "opml" => \&git_opml,
 461         "project_list" => \&git_project_list,
 462         "project_index" => \&git_project_index,
 463 );
 464
 465 if (!defined $action) {
 466         if (defined $hash) {
 467                 $action = git_get_type($hash);
 468         } elsif (defined $hash_base && defined $file_name) {
 469                 $action = git_get_type("$hash_base:$file_name");
 470         } elsif (defined $project) {
 471                 $action = 'summary';
 472         } else {
 473                 $action = 'project_list';
 474         }
 475 }
 476 if (!defined($actions{$action})) {
 477         die_error(undef, "Unknown action");
 478 }
 479 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 480     !$project) {
 481         die_error(undef, "Project needed");
 482 }
 483 $actions{$action}->();
 484 exit;
 485
 486 ## ======================================================================
 487 ## action links
 488
 489 sub href(%) {
 490         my %params = @_;
 491         # default is to use -absolute url() i.e. $my_uri
 492         my $href = $params{-full} ? $my_url : $my_uri;
 493
 494         # XXX: Warning: If you touch this, check the search form for updating,
 495         # too.
 496
 497         my @mapping = (
 498                 project => "p",
 499                 action => "a",
 500                 file_name => "f",
 501                 file_parent => "fp",
 502                 hash => "h",
 503                 hash_parent => "hp",
 504                 hash_base => "hb",
 505                 hash_parent_base => "hpb",
 506                 page => "pg",
 507                 order => "o",
 508                 searchtext => "s",
 509                 searchtype => "st",
 510         );
 511         my %mapping = @mapping;
 512
 513         $params{'project'} = $project unless exists $params{'project'};
 514
 515         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 516         if ($use_pathinfo) {
 517                 # use PATH_INFO for project name
 518                 $href .= "/$params{'project'}" if defined $params{'project'};
 519                 delete $params{'project'};
 520
 521                 # Summary just uses the project path URL
 522                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 523                         delete $params{'action'};
 524                 }
 525         }
 526
 527         # now encode the parameters explicitly
 528         my @result = ();
 529         for (my $i = 0; $i < @mapping; $i += 2) {
 530                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 531                 if (defined $params{$name}) {
 532                         push @result, $symbol . "=" . esc_param($params{$name});
 533                 }
 534         }
 535         $href .= "?" . join(';', @result) if scalar @result;
 536
 537         return $href;
 538 }
 539
 540
 541 ## ======================================================================
 542 ## validation, quoting/unquoting and escaping
 543
 544 sub validate_pathname {
 545         my $input = shift || return undef;
 546
 547         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 548         # at the beginning, at the end, and between slashes.
 549         # also this catches doubled slashes
 550         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 551                 return undef;
 552         }
 553         # no null characters
 554         if ($input =~ m!\0!) {
 555                 return undef;
 556         }
 557         return $input;
 558 }
 559
 560 sub validate_refname {
 561         my $input = shift || return undef;
 562
 563         # textual hashes are O.K.
 564         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 565                 return $input;
 566         }
 567         # it must be correct pathname
 568         $input = validate_pathname($input)
 569                 or return undef;
 570         # restrictions on ref name according to git-check-ref-format
 571         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 572                 return undef;
 573         }
 574         return $input;
 575 }
 576
 577 # quote unsafe chars, but keep the slash, even when it's not
 578 # correct, but quoted slashes look too horrible in bookmarks
 579 sub esc_param {
 580         my $str = shift;
 581         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 582         $str =~ s/\+/%2B/g;
 583         $str =~ s/ /\+/g;
 584         return $str;
 585 }
 586
 587 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 588 sub esc_url {
 589         my $str = shift;
 590         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 591         $str =~ s/\+/%2B/g;
 592         $str =~ s/ /\+/g;
 593         return $str;
 594 }
 595
 596 # replace invalid utf8 character with SUBSTITUTION sequence
 597 sub esc_html ($;%) {
 598         my $str = shift;
 599         my %opts = @_;
 600
 601         $str = decode_utf8($str);
 602         $str = $cgi->escapeHTML($str);
 603         if ($opts{'-nbsp'}) {
 604                 $str =~ s/ /&nbsp;/g;
 605         }
 606         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 607         return $str;
 608 }
 609
 610 # quote control characters and escape filename to HTML
 611 sub esc_path {
 612         my $str = shift;
 613         my %opts = @_;
 614
 615         $str = decode_utf8($str);
 616         $str = $cgi->escapeHTML($str);
 617         if ($opts{'-nbsp'}) {
 618                 $str =~ s/ /&nbsp;/g;
 619         }
 620         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 621         return $str;
 622 }
 623
 624 # Make control characters "printable", using character escape codes (CEC)
 625 sub quot_cec {
 626         my $cntrl = shift;
 627         my %es = ( # character escape codes, aka escape sequences
 628                    "\t" => '\t',   # tab            (HT)
 629                    "\n" => '\n',   # line feed      (LF)
 630                    "\r" => '\r',   # carrige return (CR)
 631                    "\f" => '\f',   # form feed      (FF)
 632                    "\b" => '\b',   # backspace      (BS)
 633                    "\a" => '\a',   # alarm (bell)   (BEL)
 634                    "\e" => '\e',   # escape         (ESC)
 635                    "\013" => '\v', # vertical tab   (VT)
 636                    "\000" => '\0', # nul character  (NUL)
 637                    );
 638         my $chr = ( (exists $es{$cntrl})
 639                     ? $es{$cntrl}
 640                     : sprintf('\%03o', ord($cntrl)) );
 641         return "<span class=\"cntrl\">$chr</span>";
 642 }
 643
 644 # Alternatively use unicode control pictures codepoints,
 645 # Unicode "printable representation" (PR)
 646 sub quot_upr {
 647         my $cntrl = shift;
 648         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 649         return "<span class=\"cntrl\">$chr</span>";
 650 }
 651
 652 # git may return quoted and escaped filenames
 653 sub unquote {
 654         my $str = shift;
 655
 656         sub unq {
 657                 my $seq = shift;
 658                 my %es = ( # character escape codes, aka escape sequences
 659                         't' => "\t",   # tab            (HT, TAB)
 660                         'n' => "\n",   # newline        (NL)
 661                         'r' => "\r",   # return         (CR)
 662                         'f' => "\f",   # form feed      (FF)
 663                         'b' => "\b",   # backspace      (BS)
 664                         'a' => "\a",   # alarm (bell)   (BEL)
 665                         'e' => "\e",   # escape         (ESC)
 666                         'v' => "\013", # vertical tab   (VT)
 667                 );
 668
 669                 if ($seq =~ m/^[0-7]{1,3}$/) {
 670                         # octal char sequence
 671                         return chr(oct($seq));
 672                 } elsif (exists $es{$seq}) {
 673                         # C escape sequence, aka character escape code
 674                         return $es{$seq}
 675                 }
 676                 # quoted ordinary character
 677                 return $seq;
 678         }
 679
 680         if ($str =~ m/^"(.*)"$/) {
 681                 # needs unquoting
 682                 $str = $1;
 683                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 684         }
 685         return $str;
 686 }
 687
 688 # escape tabs (convert tabs to spaces)
 689 sub untabify {
 690         my $line = shift;
 691
 692         while ((my $pos = index($line, "\t")) != -1) {
 693                 if (my $count = (8 - ($pos % 8))) {
 694                         my $spaces = ' ' x $count;
 695                         $line =~ s/\t/$spaces/;
 696                 }
 697         }
 698
 699         return $line;
 700 }
 701
 702 sub project_in_list {
 703         my $project = shift;
 704         my @list = git_get_projects_list();
 705         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 706 }
 707
 708 ## ----------------------------------------------------------------------
 709 ## HTML aware string manipulation
 710
 711 sub chop_str {
 712         my $str = shift;
 713         my $len = shift;
 714         my $add_len = shift || 10;
 715
 716         # allow only $len chars, but don't cut a word if it would fit in $add_len
 717         # if it doesn't fit, cut it if it's still longer than the dots we would add
 718         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 719         my $body = $1;
 720         my $tail = $2;
 721         if (length($tail) > 4) {
 722                 $tail = " ...";
 723                 $body =~ s/&[^;]*$//; # remove chopped character entities
 724         }
 725         return "$body$tail";
 726 }
 727
 728 ## ----------------------------------------------------------------------
 729 ## functions returning short strings
 730
 731 # CSS class for given age value (in seconds)
 732 sub age_class {
 733         my $age = shift;
 734
 735         if (!defined $age) {
 736                 return "noage";
 737         } elsif ($age < 60*60*2) {
 738                 return "age0";
 739         } elsif ($age < 60*60*24*2) {
 740                 return "age1";
 741         } else {
 742                 return "age2";
 743         }
 744 }
 745
 746 # convert age in seconds to "nn units ago" string
 747 sub age_string {
 748         my $age = shift;
 749         my $age_str;
 750
 751         if ($age > 60*60*24*365*2) {
 752                 $age_str = (int $age/60/60/24/365);
 753                 $age_str .= " years ago";
 754         } elsif ($age > 60*60*24*(365/12)*2) {
 755                 $age_str = int $age/60/60/24/(365/12);
 756                 $age_str .= " months ago";
 757         } elsif ($age > 60*60*24*7*2) {
 758                 $age_str = int $age/60/60/24/7;
 759                 $age_str .= " weeks ago";
 760         } elsif ($age > 60*60*24*2) {
 761                 $age_str = int $age/60/60/24;
 762                 $age_str .= " days ago";
 763         } elsif ($age > 60*60*2) {
 764                 $age_str = int $age/60/60;
 765                 $age_str .= " hours ago";
 766         } elsif ($age > 60*2) {
 767                 $age_str = int $age/60;
 768                 $age_str .= " min ago";
 769         } elsif ($age > 2) {
 770                 $age_str = int $age;
 771                 $age_str .= " sec ago";
 772         } else {
 773                 $age_str .= " right now";
 774         }
 775         return $age_str;
 776 }
 777
 778 # convert file mode in octal to symbolic file mode string
 779 sub mode_str {
 780         my $mode = oct shift;
 781
 782         if (S_ISDIR($mode & S_IFMT)) {
 783                 return 'drwxr-xr-x';
 784         } elsif (S_ISLNK($mode)) {
 785                 return 'lrwxrwxrwx';
 786         } elsif (S_ISREG($mode)) {
 787                 # git cares only about the executable bit
 788                 if ($mode & S_IXUSR) {
 789                         return '-rwxr-xr-x';
 790                 } else {
 791                         return '-rw-r--r--';
 792                 };
 793         } else {
 794                 return '----------';
 795         }
 796 }
 797
 798 # convert file mode in octal to file type string
 799 sub file_type {
 800         my $mode = shift;
 801
 802         if ($mode !~ m/^[0-7]+$/) {
 803                 return $mode;
 804         } else {
 805                 $mode = oct $mode;
 806         }
 807
 808         if (S_ISDIR($mode & S_IFMT)) {
 809                 return "directory";
 810         } elsif (S_ISLNK($mode)) {
 811                 return "symlink";
 812         } elsif (S_ISREG($mode)) {
 813                 return "file";
 814         } else {
 815                 return "unknown";
 816         }
 817 }
 818
 819 # convert file mode in octal to file type description string
 820 sub file_type_long {
 821         my $mode = shift;
 822
 823         if ($mode !~ m/^[0-7]+$/) {
 824                 return $mode;
 825         } else {
 826                 $mode = oct $mode;
 827         }
 828
 829         if (S_ISDIR($mode & S_IFMT)) {
 830                 return "directory";
 831         } elsif (S_ISLNK($mode)) {
 832                 return "symlink";
 833         } elsif (S_ISREG($mode)) {
 834                 if ($mode & S_IXUSR) {
 835                         return "executable";
 836                 } else {
 837                         return "file";
 838                 };
 839         } else {
 840                 return "unknown";
 841         }
 842 }
 843
 844
 845 ## ----------------------------------------------------------------------
 846 ## functions returning short HTML fragments, or transforming HTML fragments
 847 ## which don't belong to other sections
 848
 849 # format line of commit message.
 850 sub format_log_line_html {
 851         my $line = shift;
 852
 853         $line = esc_html($line, -nbsp=>1);
 854         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 855                 my $hash_text = $1;
 856                 my $link =
 857                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 858                                 -class => "text"}, $hash_text);
 859                 $line =~ s/$hash_text/$link/;
 860         }
 861         return $line;
 862 }
 863
 864 # format marker of refs pointing to given object
 865 sub format_ref_marker {
 866         my ($refs, $id) = @_;
 867         my $markers = '';
 868
 869         if (defined $refs->{$id}) {
 870                 foreach my $ref (@{$refs->{$id}}) {
 871                         my ($type, $name) = qw();
 872                         # e.g. tags/v2.6.11 or heads/next
 873                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 874                                 $type = $1;
 875                                 $name = $2;
 876                         } else {
 877                                 $type = "ref";
 878                                 $name = $ref;
 879                         }
 880
 881                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 882                                     esc_html($name) . "</span>";
 883                 }
 884         }
 885
 886         if ($markers) {
 887                 return ' <span class="refs">'. $markers . '</span>';
 888         } else {
 889                 return "";
 890         }
 891 }
 892
 893 # format, perhaps shortened and with markers, title line
 894 sub format_subject_html {
 895         my ($long, $short, $href, $extra) = @_;
 896         $extra = '' unless defined($extra);
 897
 898         if (length($short) < length($long)) {
 899                 return $cgi->a({-href => $href, -class => "list subject",
 900                                 -title => decode_utf8($long)},
 901                        esc_html($short) . $extra);
 902         } else {
 903                 return $cgi->a({-href => $href, -class => "list subject"},
 904                        esc_html($long)  . $extra);
 905         }
 906 }
 907
 908 # format patch (diff) line (rather not to be used for diff headers)
 909 sub format_diff_line {
 910         my $line = shift;
 911         my ($from, $to) = @_;
 912         my $diff_class = "";
 913
 914         chomp $line;
 915
 916         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 917                 # combined diff
 918                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 919                 if ($line =~ m/^\@{3}/) {
 920                         $diff_class = " chunk_header";
 921                 } elsif ($line =~ m/^\\/) {
 922                         $diff_class = " incomplete";
 923                 } elsif ($prefix =~ tr/+/+/) {
 924                         $diff_class = " add";
 925                 } elsif ($prefix =~ tr/-/-/) {
 926                         $diff_class = " rem";
 927                 }
 928         } else {
 929                 # assume ordinary diff
 930                 my $char = substr($line, 0, 1);
 931                 if ($char eq '+') {
 932                         $diff_class = " add";
 933                 } elsif ($char eq '-') {
 934                         $diff_class = " rem";
 935                 } elsif ($char eq '@') {
 936                         $diff_class = " chunk_header";
 937                 } elsif ($char eq "\\") {
 938                         $diff_class = " incomplete";
 939                 }
 940         }
 941         $line = untabify($line);
 942         if ($from && $to && $line =~ m/^\@{2} /) {
 943                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 944                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 945
 946                 $from_lines = 0 unless defined $from_lines;
 947                 $to_lines   = 0 unless defined $to_lines;
 948
 949                 if ($from->{'href'}) {
 950                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 951                                              -class=>"list"}, $from_text);
 952                 }
 953                 if ($to->{'href'}) {
 954                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 955                                              -class=>"list"}, $to_text);
 956                 }
 957                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 958                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 959                 return "<div class=\"diff$diff_class\">$line</div>\n";
 960         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 961                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 962                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 963
 964                 @from_text = split(' ', $ranges);
 965                 for (my $i = 0; $i < @from_text; ++$i) {
 966                         ($from_start[$i], $from_nlines[$i]) =
 967                                 (split(',', substr($from_text[$i], 1)), 0);
 968                 }
 969
 970                 $to_text   = pop @from_text;
 971                 $to_start  = pop @from_start;
 972                 $to_nlines = pop @from_nlines;
 973
 974                 $line = "<span class=\"chunk_info\">$prefix ";
 975                 for (my $i = 0; $i < @from_text; ++$i) {
 976                         if ($from->{'href'}[$i]) {
 977                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 978                                                   -class=>"list"}, $from_text[$i]);
 979                         } else {
 980                                 $line .= $from_text[$i];
 981                         }
 982                         $line .= " ";
 983                 }
 984                 if ($to->{'href'}) {
 985                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 986                                           -class=>"list"}, $to_text);
 987                 } else {
 988                         $line .= $to_text;
 989                 }
 990                 $line .= " $prefix</span>" .
 991                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 992                 return "<div class=\"diff$diff_class\">$line</div>\n";
 993         }
 994         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 995 }
 996
 997 ## ----------------------------------------------------------------------
 998 ## git utility subroutines, invoking git commands
 999
1000 # returns path to the core git executable and the --git-dir parameter as list
1001 sub git_cmd {
1002         return $GIT, '--git-dir='.$git_dir;
1003 }
1004
1005 # returns path to the core git executable and the --git-dir parameter as string
1006 sub git_cmd_str {
1007         return join(' ', git_cmd());
1008 }
1009
1010 # get HEAD ref of given project as hash
1011 sub git_get_head_hash {
1012         my $project = shift;
1013         my $o_git_dir = $git_dir;
1014         my $retval = undef;
1015         $git_dir = "$projectroot/$project";
1016         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1017                 my $head = <$fd>;
1018                 close $fd;
1019                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1020                         $retval = $1;
1021                 }
1022         }
1023         if (defined $o_git_dir) {
1024                 $git_dir = $o_git_dir;
1025         }
1026         return $retval;
1027 }
1028
1029 # get type of given object
1030 sub git_get_type {
1031         my $hash = shift;
1032
1033         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1034         my $type = <$fd>;
1035         close $fd or return;
1036         chomp $type;
1037         return $type;
1038 }
1039
1040 sub git_get_project_config {
1041         my ($key, $type) = @_;
1042
1043         return unless ($key);
1044         $key =~ s/^gitweb\.//;
1045         return if ($key =~ m/\W/);
1046
1047         my @x = (git_cmd(), 'config');
1048         if (defined $type) { push @x, $type; }
1049         push @x, "--get";
1050         push @x, "gitweb.$key";
1051         my $val = qx(@x);
1052         chomp $val;
1053         return ($val);
1054 }
1055
1056 # get hash of given path at given ref
1057 sub git_get_hash_by_path {
1058         my $base = shift;
1059         my $path = shift || return undef;
1060         my $type = shift;
1061
1062         $path =~ s,/+$,,;
1063
1064         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1065                 or die_error(undef, "Open git-ls-tree failed");
1066         my $line = <$fd>;
1067         close $fd or return undef;
1068
1069         if (!defined $line) {
1070                 # there is no tree or hash given by $path at $base
1071                 return undef;
1072         }
1073
1074         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1075         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1076         if (defined $type && $type ne $2) {
1077                 # type doesn't match
1078                 return undef;
1079         }
1080         return $3;
1081 }
1082
1083 # get path of entry with given hash at given tree-ish (ref)
1084 # used to get 'from' filename for combined diff (merge commit) for renames
1085 sub git_get_path_by_hash {
1086         my $base = shift || return;
1087         my $hash = shift || return;
1088
1089         local $/ = "\0";
1090
1091         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1092                 or return undef;
1093         while (my $line = <$fd>) {
1094                 chomp $line;
1095
1096                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1097                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1098                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1099                         close $fd;
1100                         return $1;
1101                 }
1102         }
1103         close $fd;
1104         return undef;
1105 }
1106
1107 ## ......................................................................
1108 ## git utility functions, directly accessing git repository
1109
1110 sub git_get_project_description {
1111         my $path = shift;
1112
1113         open my $fd, "$projectroot/$path/description" or return undef;
1114         my $descr = <$fd>;
1115         close $fd;
1116         chomp $descr;
1117         return $descr;
1118 }
1119
1120 sub git_get_project_url_list {
1121         my $path = shift;
1122
1123         open my $fd, "$projectroot/$path/cloneurl" or return;
1124         my @git_project_url_list = map { chomp; $_ } <$fd>;
1125         close $fd;
1126
1127         return wantarray ? @git_project_url_list : \@git_project_url_list;
1128 }
1129
1130 sub git_get_projects_list {
1131         my ($filter) = @_;
1132         my @list;
1133
1134         $filter ||= '';
1135         $filter =~ s/\.git$//;
1136
1137         my ($check_forks) = gitweb_check_feature('forks');
1138
1139         if (-d $projects_list) {
1140                 # search in directory
1141                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1142                 # remove the trailing "/"
1143                 $dir =~ s!/+$!!;
1144                 my $pfxlen = length("$dir");
1145
1146                 File::Find::find({
1147                         follow_fast => 1, # follow symbolic links
1148                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1149                         wanted => sub {
1150                                 # skip project-list toplevel, if we get it.
1151                                 return if (m!^[/.]$!);
1152                                 # only directories can be git repositories
1153                                 return unless (-d $_);
1154
1155                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1156                                 # we check related file in $projectroot
1157                                 if ($check_forks and $subdir =~ m#/.#) {
1158                                         $File::Find::prune = 1;
1159                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1160                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1161                                         $File::Find::prune = 1;
1162                                 }
1163                         },
1164                 }, "$dir");
1165
1166         } elsif (-f $projects_list) {
1167                 # read from file(url-encoded):
1168                 # 'git%2Fgit.git Linus+Torvalds'
1169                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1170                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1171                 my %paths;
1172                 open my ($fd), $projects_list or return;
1173         PROJECT:
1174                 while (my $line = <$fd>) {
1175                         chomp $line;
1176                         my ($path, $owner) = split ' ', $line;
1177                         $path = unescape($path);
1178                         $owner = unescape($owner);
1179                         if (!defined $path) {
1180                                 next;
1181                         }
1182                         if ($filter ne '') {
1183                                 # looking for forks;
1184                                 my $pfx = substr($path, 0, length($filter));
1185                                 if ($pfx ne $filter) {
1186                                         next PROJECT;
1187                                 }
1188                                 my $sfx = substr($path, length($filter));
1189                                 if ($sfx !~ /^\/.*\.git$/) {
1190                                         next PROJECT;
1191                                 }
1192                         } elsif ($check_forks) {
1193                         PATH:
1194                                 foreach my $filter (keys %paths) {
1195                                         # looking for forks;
1196                                         my $pfx = substr($path, 0, length($filter));
1197                                         if ($pfx ne $filter) {
1198                                                 next PATH;
1199                                         }
1200                                         my $sfx = substr($path, length($filter));
1201                                         if ($sfx !~ /^\/.*\.git$/) {
1202                                                 next PATH;
1203                                         }
1204                                         # is a fork, don't include it in
1205                                         # the list
1206                                         next PROJECT;
1207                                 }
1208                         }
1209                         if (check_export_ok("$projectroot/$path")) {
1210                                 my $pr = {
1211                                         path => $path,
1212                                         owner => decode_utf8($owner),
1213                                 };
1214                                 push @list, $pr;
1215                                 (my $forks_path = $path) =~ s/\.git$//;
1216                                 $paths{$forks_path}++;
1217                         }
1218                 }
1219                 close $fd;
1220         }
1221         return @list;
1222 }
1223
1224 sub git_get_project_owner {
1225         my $project = shift;
1226         my $owner;
1227
1228         return undef unless $project;
1229
1230         # read from file (url-encoded):
1231         # 'git%2Fgit.git Linus+Torvalds'
1232         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1233         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1234         if (-f $projects_list) {
1235                 open (my $fd , $projects_list);
1236                 while (my $line = <$fd>) {
1237                         chomp $line;
1238                         my ($pr, $ow) = split ' ', $line;
1239                         $pr = unescape($pr);
1240                         $ow = unescape($ow);
1241                         if ($pr eq $project) {
1242                                 $owner = decode_utf8($ow);
1243                                 last;
1244                         }
1245                 }
1246                 close $fd;
1247         }
1248         if (!defined $owner) {
1249                 $owner = get_file_owner("$projectroot/$project");
1250         }
1251
1252         return $owner;
1253 }
1254
1255 sub git_get_last_activity {
1256         my ($path) = @_;
1257         my $fd;
1258
1259         $git_dir = "$projectroot/$path";
1260         open($fd, "-|", git_cmd(), 'for-each-ref',
1261              '--format=%(committer)',
1262              '--sort=-committerdate',
1263              '--count=1',
1264              'refs/heads') or return;
1265         my $most_recent = <$fd>;
1266         close $fd or return;
1267         if (defined $most_recent &&
1268             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1269                 my $timestamp = $1;
1270                 my $age = time - $timestamp;
1271                 return ($age, age_string($age));
1272         }
1273 }
1274
1275 sub git_get_references {
1276         my $type = shift || "";
1277         my %refs;
1278         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1279         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1280         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1281                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1282                 or return;
1283
1284         while (my $line = <$fd>) {
1285                 chomp $line;
1286                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1287                         if (defined $refs{$1}) {
1288                                 push @{$refs{$1}}, $2;
1289                         } else {
1290                                 $refs{$1} = [ $2 ];
1291                         }
1292                 }
1293         }
1294         close $fd or return;
1295         return \%refs;
1296 }
1297
1298 sub git_get_rev_name_tags {
1299         my $hash = shift || return undef;
1300
1301         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1302                 or return;
1303         my $name_rev = <$fd>;
1304         close $fd;
1305
1306         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1307                 return $1;
1308         } else {
1309                 # catches also '$hash undefined' output
1310                 return undef;
1311         }
1312 }
1313
1314 ## ----------------------------------------------------------------------
1315 ## parse to hash functions
1316
1317 sub parse_date {
1318         my $epoch = shift;
1319         my $tz = shift || "-0000";
1320
1321         my %date;
1322         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1323         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1324         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1325         $date{'hour'} = $hour;
1326         $date{'minute'} = $min;
1327         $date{'mday'} = $mday;
1328         $date{'day'} = $days[$wday];
1329         $date{'month'} = $months[$mon];
1330         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1331                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1332         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1333                              $mday, $months[$mon], $hour ,$min;
1334         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1335                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1336
1337         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1338         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1339         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1340         $date{'hour_local'} = $hour;
1341         $date{'minute_local'} = $min;
1342         $date{'tz_local'} = $tz;
1343         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1344                                   1900+$year, $mon+1, $mday,
1345                                   $hour, $min, $sec, $tz);
1346         return %date;
1347 }
1348
1349 sub parse_tag {
1350         my $tag_id = shift;
1351         my %tag;
1352         my @comment;
1353
1354         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1355         $tag{'id'} = $tag_id;
1356         while (my $line = <$fd>) {
1357                 chomp $line;
1358                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1359                         $tag{'object'} = $1;
1360                 } elsif ($line =~ m/^type (.+)$/) {
1361                         $tag{'type'} = $1;
1362                 } elsif ($line =~ m/^tag (.+)$/) {
1363                         $tag{'name'} = $1;
1364                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1365                         $tag{'author'} = $1;
1366                         $tag{'epoch'} = $2;
1367                         $tag{'tz'} = $3;
1368                 } elsif ($line =~ m/--BEGIN/) {
1369                         push @comment, $line;
1370                         last;
1371                 } elsif ($line eq "") {
1372                         last;
1373                 }
1374         }
1375         push @comment, <$fd>;
1376         $tag{'comment'} = \@comment;
1377         close $fd or return;
1378         if (!defined $tag{'name'}) {
1379                 return
1380         };
1381         return %tag
1382 }
1383
1384 sub parse_commit_text {
1385         my ($commit_text, $withparents) = @_;
1386         my @commit_lines = split '\n', $commit_text;
1387         my %co;
1388
1389         pop @commit_lines; # Remove '\0'
1390
1391         if (! @commit_lines) {
1392                 return;
1393         }
1394
1395         my $header = shift @commit_lines;
1396         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1397                 return;
1398         }
1399         ($co{'id'}, my @parents) = split ' ', $header;
1400         while (my $line = shift @commit_lines) {
1401                 last if $line eq "\n";
1402                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1403                         $co{'tree'} = $1;
1404                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1405                         push @parents, $1;
1406                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1407                         $co{'author'} = $1;
1408                         $co{'author_epoch'} = $2;
1409                         $co{'author_tz'} = $3;
1410                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1411                                 $co{'author_name'}  = $1;
1412                                 $co{'author_email'} = $2;
1413                         } else {
1414                                 $co{'author_name'} = $co{'author'};
1415                         }
1416                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1417                         $co{'committer'} = $1;
1418                         $co{'committer_epoch'} = $2;
1419                         $co{'committer_tz'} = $3;
1420                         $co{'committer_name'} = $co{'committer'};
1421                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1422                                 $co{'committer_name'}  = $1;
1423                                 $co{'committer_email'} = $2;
1424                         } else {
1425                                 $co{'committer_name'} = $co{'committer'};
1426                         }
1427                 }
1428         }
1429         if (!defined $co{'tree'}) {
1430                 return;
1431         };
1432         $co{'parents'} = \@parents;
1433         $co{'parent'} = $parents[0];
1434
1435         foreach my $title (@commit_lines) {
1436                 $title =~ s/^    //;
1437                 if ($title ne "") {
1438                         $co{'title'} = chop_str($title, 80, 5);
1439                         # remove leading stuff of merges to make the interesting part visible
1440                         if (length($title) > 50) {
1441                                 $title =~ s/^Automatic //;
1442                                 $title =~ s/^merge (of|with) /Merge ... /i;
1443                                 if (length($title) > 50) {
1444                                         $title =~ s/(http|rsync):\/\///;
1445                                 }
1446                                 if (length($title) > 50) {
1447                                         $title =~ s/(master|www|rsync)\.//;
1448                                 }
1449                                 if (length($title) > 50) {
1450                                         $title =~ s/kernel.org:?//;
1451                                 }
1452                                 if (length($title) > 50) {
1453                                         $title =~ s/\/pub\/scm//;
1454                                 }
1455                         }
1456                         $co{'title_short'} = chop_str($title, 50, 5);
1457                         last;
1458                 }
1459         }
1460         if ($co{'title'} eq "") {
1461                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1462         }
1463         # remove added spaces
1464         foreach my $line (@commit_lines) {
1465                 $line =~ s/^    //;
1466         }
1467         $co{'comment'} = \@commit_lines;
1468
1469         my $age = time - $co{'committer_epoch'};
1470         $co{'age'} = $age;
1471         $co{'age_string'} = age_string($age);
1472         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1473         if ($age > 60*60*24*7*2) {
1474                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1475                 $co{'age_string_age'} = $co{'age_string'};
1476         } else {
1477                 $co{'age_string_date'} = $co{'age_string'};
1478                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1479         }
1480         return %co;
1481 }
1482
1483 sub parse_commit {
1484         my ($commit_id) = @_;
1485         my %co;
1486
1487         local $/ = "\0";
1488
1489         open my $fd, "-|", git_cmd(), "rev-list",
1490                 "--parents",
1491                 "--header",
1492                 "--max-count=1",
1493                 $commit_id,
1494                 "--",
1495                 or die_error(undef, "Open git-rev-list failed");
1496         %co = parse_commit_text(<$fd>, 1);
1497         close $fd;
1498
1499         return %co;
1500 }
1501
1502 sub parse_commits {
1503         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1504         my @cos;
1505
1506         $maxcount ||= 1;
1507         $skip ||= 0;
1508
1509         local $/ = "\0";
1510
1511         open my $fd, "-|", git_cmd(), "rev-list",
1512                 "--header",
1513                 ($arg ? ($arg) : ()),
1514                 ("--max-count=" . $maxcount),
1515                 ("--skip=" . $skip),
1516                 $commit_id,
1517                 "--",
1518                 ($filename ? ($filename) : ())
1519                 or die_error(undef, "Open git-rev-list failed");
1520         while (my $line = <$fd>) {
1521                 my %co = parse_commit_text($line);
1522                 push @cos, \%co;
1523         }
1524         close $fd;
1525
1526         return wantarray ? @cos : \@cos;
1527 }
1528
1529 # parse ref from ref_file, given by ref_id, with given type
1530 sub parse_ref {
1531         my $ref_file = shift;
1532         my $ref_id = shift;
1533         my $type = shift || git_get_type($ref_id);
1534         my %ref_item;
1535
1536         $ref_item{'type'} = $type;
1537         $ref_item{'id'} = $ref_id;
1538         $ref_item{'epoch'} = 0;
1539         $ref_item{'age'} = "unknown";
1540         if ($type eq "tag") {
1541                 my %tag = parse_tag($ref_id);
1542                 $ref_item{'comment'} = $tag{'comment'};
1543                 if ($tag{'type'} eq "commit") {
1544                         my %co = parse_commit($tag{'object'});
1545                         $ref_item{'epoch'} = $co{'committer_epoch'};
1546                         $ref_item{'age'} = $co{'age_string'};
1547                 } elsif (defined($tag{'epoch'})) {
1548                         my $age = time - $tag{'epoch'};
1549                         $ref_item{'epoch'} = $tag{'epoch'};
1550                         $ref_item{'age'} = age_string($age);
1551                 }
1552                 $ref_item{'reftype'} = $tag{'type'};
1553                 $ref_item{'name'} = $tag{'name'};
1554                 $ref_item{'refid'} = $tag{'object'};
1555         } elsif ($type eq "commit"){
1556                 my %co = parse_commit($ref_id);
1557                 $ref_item{'reftype'} = "commit";
1558                 $ref_item{'name'} = $ref_file;
1559                 $ref_item{'title'} = $co{'title'};
1560                 $ref_item{'refid'} = $ref_id;
1561                 $ref_item{'epoch'} = $co{'committer_epoch'};
1562                 $ref_item{'age'} = $co{'age_string'};
1563         } else {
1564                 $ref_item{'reftype'} = $type;
1565                 $ref_item{'name'} = $ref_file;
1566                 $ref_item{'refid'} = $ref_id;
1567         }
1568
1569         return %ref_item;
1570 }
1571
1572 # parse line of git-diff-tree "raw" output
1573 sub parse_difftree_raw_line {
1574         my $line = shift;
1575         my %res;
1576
1577         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1578         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1579         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1580                 $res{'from_mode'} = $1;
1581                 $res{'to_mode'} = $2;
1582                 $res{'from_id'} = $3;
1583                 $res{'to_id'} = $4;
1584                 $res{'status'} = $5;
1585                 $res{'similarity'} = $6;
1586                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1587                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1588                 } else {
1589                         $res{'file'} = unquote($7);
1590                 }
1591         }
1592         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1593         # combined diff (for merge commit)
1594         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1595                 $res{'nparents'}  = length($1);
1596                 $res{'from_mode'} = [ split(' ', $2) ];
1597                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1598                 $res{'from_id'} = [ split(' ', $3) ];
1599                 $res{'to_id'} = pop @{$res{'from_id'}};
1600                 $res{'status'} = [ split('', $4) ];
1601                 $res{'to_file'} = unquote($5);
1602         }
1603         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1604         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1605                 $res{'commit'} = $1;
1606         }
1607
1608         return wantarray ? %res : \%res;
1609 }
1610
1611 # parse line of git-ls-tree output
1612 sub parse_ls_tree_line ($;%) {
1613         my $line = shift;
1614         my %opts = @_;
1615         my %res;
1616
1617         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1618         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1619
1620         $res{'mode'} = $1;
1621         $res{'type'} = $2;
1622         $res{'hash'} = $3;
1623         if ($opts{'-z'}) {
1624                 $res{'name'} = $4;
1625         } else {
1626                 $res{'name'} = unquote($4);
1627         }
1628
1629         return wantarray ? %res : \%res;
1630 }
1631
1632 ## ......................................................................
1633 ## parse to array of hashes functions
1634
1635 sub git_get_heads_list {
1636         my $limit = shift;
1637         my @headslist;
1638
1639         open my $fd, '-|', git_cmd(), 'for-each-ref',
1640                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1641                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1642                 'refs/heads'
1643                 or return;
1644         while (my $line = <$fd>) {
1645                 my %ref_item;
1646
1647                 chomp $line;
1648                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1649                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1650                 my ($committer, $epoch, $tz) =
1651                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1652                 $name =~ s!^refs/heads/!!;
1653
1654                 $ref_item{'name'}  = $name;
1655                 $ref_item{'id'}    = $hash;
1656                 $ref_item{'title'} = $title || '(no commit message)';
1657                 $ref_item{'epoch'} = $epoch;
1658                 if ($epoch) {
1659                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1660                 } else {
1661                         $ref_item{'age'} = "unknown";
1662                 }
1663
1664                 push @headslist, \%ref_item;
1665         }
1666         close $fd;
1667
1668         return wantarray ? @headslist : \@headslist;
1669 }
1670
1671 sub git_get_tags_list {
1672         my $limit = shift;
1673         my @tagslist;
1674
1675         open my $fd, '-|', git_cmd(), 'for-each-ref',
1676                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1677                 '--format=%(objectname) %(objecttype) %(refname) '.
1678                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1679                 'refs/tags'
1680                 or return;
1681         while (my $line = <$fd>) {
1682                 my %ref_item;
1683
1684                 chomp $line;
1685                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1686                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1687                 my ($creator, $epoch, $tz) =
1688                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1689                 $name =~ s!^refs/tags/!!;
1690
1691                 $ref_item{'type'} = $type;
1692                 $ref_item{'id'} = $id;
1693                 $ref_item{'name'} = $name;
1694                 if ($type eq "tag") {
1695                         $ref_item{'subject'} = $title;
1696                         $ref_item{'reftype'} = $reftype;
1697                         $ref_item{'refid'}   = $refid;
1698                 } else {
1699                         $ref_item{'reftype'} = $type;
1700                         $ref_item{'refid'}   = $id;
1701                 }
1702
1703                 if ($type eq "tag" || $type eq "commit") {
1704                         $ref_item{'epoch'} = $epoch;
1705                         if ($epoch) {
1706                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1707                         } else {
1708                                 $ref_item{'age'} = "unknown";
1709                         }
1710                 }
1711
1712                 push @tagslist, \%ref_item;
1713         }
1714         close $fd;
1715
1716         return wantarray ? @tagslist : \@tagslist;
1717 }
1718
1719 ## ----------------------------------------------------------------------
1720 ## filesystem-related functions
1721
1722 sub get_file_owner {
1723         my $path = shift;
1724
1725         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1726         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1727         if (!defined $gcos) {
1728                 return undef;
1729         }
1730         my $owner = $gcos;
1731         $owner =~ s/[,;].*$//;
1732         return decode_utf8($owner);
1733 }
1734
1735 ## ......................................................................
1736 ## mimetype related functions
1737
1738 sub mimetype_guess_file {
1739         my $filename = shift;
1740         my $mimemap = shift;
1741         -r $mimemap or return undef;
1742
1743         my %mimemap;
1744         open(MIME, $mimemap) or return undef;
1745         while (<MIME>) {
1746                 next if m/^#/; # skip comments
1747                 my ($mime, $exts) = split(/\t+/);
1748                 if (defined $exts) {
1749                         my @exts = split(/\s+/, $exts);
1750                         foreach my $ext (@exts) {
1751                                 $mimemap{$ext} = $mime;
1752                         }
1753                 }
1754         }
1755         close(MIME);
1756
1757         $filename =~ /\.([^.]*)$/;
1758         return $mimemap{$1};
1759 }
1760
1761 sub mimetype_guess {
1762         my $filename = shift;
1763         my $mime;
1764         $filename =~ /\./ or return undef;
1765
1766         if ($mimetypes_file) {
1767                 my $file = $mimetypes_file;
1768                 if ($file !~ m!^/!) { # if it is relative path
1769                         # it is relative to project
1770                         $file = "$projectroot/$project/$file";
1771                 }
1772                 $mime = mimetype_guess_file($filename, $file);
1773         }
1774         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1775         return $mime;
1776 }
1777
1778 sub blob_mimetype {
1779         my $fd = shift;
1780         my $filename = shift;
1781
1782         if ($filename) {
1783                 my $mime = mimetype_guess($filename);
1784                 $mime and return $mime;
1785         }
1786
1787         # just in case
1788         return $default_blob_plain_mimetype unless $fd;
1789
1790         if (-T $fd) {
1791                 return 'text/plain' .
1792                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1793         } elsif (! $filename) {
1794                 return 'application/octet-stream';
1795         } elsif ($filename =~ m/\.png$/i) {
1796                 return 'image/png';
1797         } elsif ($filename =~ m/\.gif$/i) {
1798                 return 'image/gif';
1799         } elsif ($filename =~ m/\.jpe?g$/i) {
1800                 return 'image/jpeg';
1801         } else {
1802                 return 'application/octet-stream';
1803         }
1804 }
1805
1806 ## ======================================================================
1807 ## functions printing HTML: header, footer, error page
1808
1809 sub git_header_html {
1810         my $status = shift || "200 OK";
1811         my $expires = shift;
1812
1813         my $title = "$site_name";
1814         if (defined $project) {
1815                 $title .= " - " . decode_utf8($project);
1816                 if (defined $action) {
1817                         $title .= "/$action";
1818                         if (defined $file_name) {
1819                                 $title .= " - " . esc_path($file_name);
1820                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1821                                         $title .= "/";
1822                                 }
1823                         }
1824                 }
1825         }
1826         my $content_type;
1827         # require explicit support from the UA if we are to send the page as
1828         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1829         # we have to do this because MSIE sometimes globs '*/*', pretending to
1830         # support xhtml+xml but choking when it gets what it asked for.
1831         if (defined $cgi->http('HTTP_ACCEPT') &&
1832             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1833             $cgi->Accept('application/xhtml+xml') != 0) {
1834                 $content_type = 'application/xhtml+xml';
1835         } else {
1836                 $content_type = 'text/html';
1837         }
1838         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1839                            -status=> $status, -expires => $expires);
1840         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1841         print <<EOF;
1842 <?xml version="1.0" encoding="utf-8"?>
1843 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1844 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1845 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1846 <!-- git core binaries version $git_version -->
1847 <head>
1848 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1849 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1850 <meta name="robots" content="index, nofollow"/>
1851 <title>$title</title>
1852 EOF
1853 # print out each stylesheet that exist
1854         if (defined $stylesheet) {
1855 #provides backwards capability for those people who define style sheet in a config file
1856                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1857         } else {
1858                 foreach my $stylesheet (@stylesheets) {
1859                         next unless $stylesheet;
1860                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1861                 }
1862         }
1863         if (defined $project) {
1864                 printf('<link rel="alternate" title="%s log RSS feed" '.
1865                        'href="%s" type="application/rss+xml" />'."\n",
1866                        esc_param($project), href(action=>"rss"));
1867                 printf('<link rel="alternate" title="%s log Atom feed" '.
1868                        'href="%s" type="application/atom+xml" />'."\n",
1869                        esc_param($project), href(action=>"atom"));
1870         } else {
1871                 printf('<link rel="alternate" title="%s projects list" '.
1872                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1873                        $site_name, href(project=>undef, action=>"project_index"));
1874                 printf('<link rel="alternate" title="%s projects feeds" '.
1875                        'href="%s" type="text/x-opml"/>'."\n",
1876                        $site_name, href(project=>undef, action=>"opml"));
1877         }
1878         if (defined $favicon) {
1879                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1880         }
1881
1882         print "</head>\n" .
1883               "<body>\n";
1884
1885         if (-f $site_header) {
1886                 open (my $fd, $site_header);
1887                 print <$fd>;
1888                 close $fd;
1889         }
1890
1891         print "<div class=\"page_header\">\n" .
1892               $cgi->a({-href => esc_url($logo_url),
1893                        -title => $logo_label},
1894                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1895         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1896         if (defined $project) {
1897                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1898                 if (defined $action) {
1899                         print " / $action";
1900                 }
1901                 print "\n";
1902         }
1903         my ($have_search) = gitweb_check_feature('search');
1904         if ((defined $project) && ($have_search)) {
1905                 if (!defined $searchtext) {
1906                         $searchtext = "";
1907                 }
1908                 my $search_hash;
1909                 if (defined $hash_base) {
1910                         $search_hash = $hash_base;
1911                 } elsif (defined $hash) {
1912                         $search_hash = $hash;
1913                 } else {
1914                         $search_hash = "HEAD";
1915                 }
1916                 $cgi->param("a", "search");
1917                 $cgi->param("h", $search_hash);
1918                 $cgi->param("p", $project);
1919                 print $cgi->startform(-method => "get", -action => $my_uri) .
1920                       "<div class=\"search\">\n" .
1921                       $cgi->hidden(-name => "p") . "\n" .
1922                       $cgi->hidden(-name => "a") . "\n" .
1923                       $cgi->hidden(-name => "h") . "\n" .
1924                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1925                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1926                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1927                       " search:\n",
1928                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1929                       "</div>" .
1930                       $cgi->end_form() . "\n";
1931         }
1932         print "</div>\n";
1933 }
1934
1935 sub git_footer_html {
1936         print "<div class=\"page_footer\">\n";
1937         if (defined $project) {
1938                 my $descr = git_get_project_description($project);
1939                 if (defined $descr) {
1940                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1941                 }
1942                 print $cgi->a({-href => href(action=>"rss"),
1943                               -class => "rss_logo"}, "RSS") . " ";
1944                 print $cgi->a({-href => href(action=>"atom"),
1945                               -class => "rss_logo"}, "Atom") . "\n";
1946         } else {
1947                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1948                               -class => "rss_logo"}, "OPML") . " ";
1949                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1950                               -class => "rss_logo"}, "TXT") . "\n";
1951         }
1952         print "</div>\n" ;
1953
1954         if (-f $site_footer) {
1955                 open (my $fd, $site_footer);
1956                 print <$fd>;
1957                 close $fd;
1958         }
1959
1960         print "</body>\n" .
1961               "</html>";
1962 }
1963
1964 sub die_error {
1965         my $status = shift || "403 Forbidden";
1966         my $error = shift || "Malformed query, file missing or permission denied";
1967
1968         git_header_html($status);
1969         print <<EOF;
1970 <div class="page_body">
1971 <br /><br />
1972 $status - $error
1973 <br />
1974 </div>
1975 EOF
1976         git_footer_html();
1977         exit;
1978 }
1979
1980 ## ----------------------------------------------------------------------
1981 ## functions printing or outputting HTML: navigation
1982
1983 sub git_print_page_nav {
1984         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1985         $extra = '' if !defined $extra; # pager or formats
1986
1987         my @navs = qw(summary shortlog log commit commitdiff tree);
1988         if ($suppress) {
1989                 @navs = grep { $_ ne $suppress } @navs;
1990         }
1991
1992         my %arg = map { $_ => {action=>$_} } @navs;
1993         if (defined $head) {
1994                 for (qw(commit commitdiff)) {
1995                         $arg{$_}{'hash'} = $head;
1996                 }
1997                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1998                         for (qw(shortlog log)) {
1999                                 $arg{$_}{'hash'} = $head;
2000                         }
2001                 }
2002         }
2003         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2004         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2005
2006         print "<div class=\"page_nav\">\n" .
2007                 (join " | ",
2008                  map { $_ eq $current ?
2009                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2010                  } @navs);
2011         print "<br/>\n$extra<br/>\n" .
2012               "</div>\n";
2013 }
2014
2015 sub format_paging_nav {
2016         my ($action, $hash, $head, $page, $nrevs) = @_;
2017         my $paging_nav;
2018
2019
2020         if ($hash ne $head || $page) {
2021                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2022         } else {
2023                 $paging_nav .= "HEAD";
2024         }
2025
2026         if ($page > 0) {
2027                 $paging_nav .= " &sdot; " .
2028                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2029                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2030         } else {
2031                 $paging_nav .= " &sdot; prev";
2032         }
2033
2034         if ($nrevs >= (100 * ($page+1)-1)) {
2035                 $paging_nav .= " &sdot; " .
2036                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2037                                  -accesskey => "n", -title => "Alt-n"}, "next");
2038         } else {
2039                 $paging_nav .= " &sdot; next";
2040         }
2041
2042         return $paging_nav;
2043 }
2044
2045 ## ......................................................................
2046 ## functions printing or outputting HTML: div
2047
2048 sub git_print_header_div {
2049         my ($action, $title, $hash, $hash_base) = @_;
2050         my %args = ();
2051
2052         $args{'action'} = $action;
2053         $args{'hash'} = $hash if $hash;
2054         $args{'hash_base'} = $hash_base if $hash_base;
2055
2056         print "<div class=\"header\">\n" .
2057               $cgi->a({-href => href(%args), -class => "title"},
2058               $title ? $title : $action) .
2059               "\n</div>\n";
2060 }
2061
2062 #sub git_print_authorship (\%) {
2063 sub git_print_authorship {
2064         my $co = shift;
2065
2066         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2067         print "<div class=\"author_date\">" .
2068               esc_html($co->{'author_name'}) .
2069               " [$ad{'rfc2822'}";
2070         if ($ad{'hour_local'} < 6) {
2071                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2072                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2073         } else {
2074                 printf(" (%02d:%02d %s)",
2075                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2076         }
2077         print "]</div>\n";
2078 }
2079
2080 sub git_print_page_path {
2081         my $name = shift;
2082         my $type = shift;
2083         my $hb = shift;
2084
2085
2086         print "<div class=\"page_path\">";
2087         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2088                       -title => 'tree root'}, decode_utf8("[$project]"));
2089         print " / ";
2090         if (defined $name) {
2091                 my @dirname = split '/', $name;
2092                 my $basename = pop @dirname;
2093                 my $fullname = '';
2094
2095                 foreach my $dir (@dirname) {
2096                         $fullname .= ($fullname ? '/' : '') . $dir;
2097                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2098                                                      hash_base=>$hb),
2099                                       -title => $fullname}, esc_path($dir));
2100                         print " / ";
2101                 }
2102                 if (defined $type && $type eq 'blob') {
2103                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2104                                                      hash_base=>$hb),
2105                                       -title => $name}, esc_path($basename));
2106                 } elsif (defined $type && $type eq 'tree') {
2107                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2108                                                      hash_base=>$hb),
2109                                       -title => $name}, esc_path($basename));
2110                         print " / ";
2111                 } else {
2112                         print esc_path($basename);
2113                 }
2114         }
2115         print "<br/></div>\n";
2116 }
2117
2118 # sub git_print_log (\@;%) {
2119 sub git_print_log ($;%) {
2120         my $log = shift;
2121         my %opts = @_;
2122
2123         if ($opts{'-remove_title'}) {
2124                 # remove title, i.e. first line of log
2125                 shift @$log;
2126         }
2127         # remove leading empty lines
2128         while (defined $log->[0] && $log->[0] eq "") {
2129                 shift @$log;
2130         }
2131
2132         # print log
2133         my $signoff = 0;
2134         my $empty = 0;
2135         foreach my $line (@$log) {
2136                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2137                         $signoff = 1;
2138                         $empty = 0;
2139                         if (! $opts{'-remove_signoff'}) {
2140                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2141                                 next;
2142                         } else {
2143                                 # remove signoff lines
2144                                 next;
2145                         }
2146                 } else {
2147                         $signoff = 0;
2148                 }
2149
2150                 # print only one empty line
2151                 # do not print empty line after signoff
2152                 if ($line eq "") {
2153                         next if ($empty || $signoff);
2154                         $empty = 1;
2155                 } else {
2156                         $empty = 0;
2157                 }
2158
2159                 print format_log_line_html($line) . "<br/>\n";
2160         }
2161
2162         if ($opts{'-final_empty_line'}) {
2163                 # end with single empty line
2164                 print "<br/>\n" unless $empty;
2165         }
2166 }
2167
2168 # return link target (what link points to)
2169 sub git_get_link_target {
2170         my $hash = shift;
2171         my $link_target;
2172
2173         # read link
2174         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2175                 or return;
2176         {
2177                 local $/;
2178                 $link_target = <$fd>;
2179         }
2180         close $fd
2181                 or return;
2182
2183         return $link_target;
2184 }
2185
2186 # given link target, and the directory (basedir) the link is in,
2187 # return target of link relative to top directory (top tree);
2188 # return undef if it is not possible (including absolute links).
2189 sub normalize_link_target {
2190         my ($link_target, $basedir, $hash_base) = @_;
2191
2192         # we can normalize symlink target only if $hash_base is provided
2193         return unless $hash_base;
2194
2195         # absolute symlinks (beginning with '/') cannot be normalized
2196         return if (substr($link_target, 0, 1) eq '/');
2197
2198         # normalize link target to path from top (root) tree (dir)
2199         my $path;
2200         if ($basedir) {
2201                 $path = $basedir . '/' . $link_target;
2202         } else {
2203                 # we are in top (root) tree (dir)
2204                 $path = $link_target;
2205         }
2206
2207         # remove //, /./, and /../
2208         my @path_parts;
2209         foreach my $part (split('/', $path)) {
2210                 # discard '.' and ''
2211                 next if (!$part || $part eq '.');
2212                 # handle '..'
2213                 if ($part eq '..') {
2214                         if (@path_parts) {
2215                                 pop @path_parts;
2216                         } else {
2217                                 # link leads outside repository (outside top dir)
2218                                 return;
2219                         }
2220                 } else {
2221                         push @path_parts, $part;
2222                 }
2223         }
2224         $path = join('/', @path_parts);
2225
2226         return $path;
2227 }
2228
2229 # print tree entry (row of git_tree), but without encompassing <tr> element
2230 sub git_print_tree_entry {
2231         my ($t, $basedir, $hash_base, $have_blame) = @_;
2232
2233         my %base_key = ();
2234         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2235
2236         # The format of a table row is: mode list link.  Where mode is
2237         # the mode of the entry, list is the name of the entry, an href,
2238         # and link is the action links of the entry.
2239
2240         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2241         if ($t->{'type'} eq "blob") {
2242                 print "<td class=\"list\">" .
2243                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2244                                                file_name=>"$basedir$t->{'name'}", %base_key),
2245                                 -class => "list"}, esc_path($t->{'name'}));
2246                 if (S_ISLNK(oct $t->{'mode'})) {
2247                         my $link_target = git_get_link_target($t->{'hash'});
2248                         if ($link_target) {
2249                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2250                                 if (defined $norm_target) {
2251                                         print " -> " .
2252                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2253                                                                      file_name=>$norm_target),
2254                                                        -title => $norm_target}, esc_path($link_target));
2255                                 } else {
2256                                         print " -> " . esc_path($link_target);
2257                                 }
2258                         }
2259                 }
2260                 print "</td>\n";
2261                 print "<td class=\"link\">";
2262                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2263                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2264                               "blob");
2265                 if ($have_blame) {
2266                         print " | " .
2267                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2268                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2269                                       "blame");
2270                 }
2271                 if (defined $hash_base) {
2272                         print " | " .
2273                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2274                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2275                                       "history");
2276                 }
2277                 print " | " .
2278                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2279                                                file_name=>"$basedir$t->{'name'}")},
2280                                 "raw");
2281                 print "</td>\n";
2282
2283         } elsif ($t->{'type'} eq "tree") {
2284                 print "<td class=\"list\">";
2285                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2286                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2287                               esc_path($t->{'name'}));
2288                 print "</td>\n";
2289                 print "<td class=\"link\">";
2290                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2291                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2292                               "tree");
2293                 if (defined $hash_base) {
2294                         print " | " .
2295                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2296                                                      file_name=>"$basedir$t->{'name'}")},
2297                                       "history");
2298                 }
2299                 print "</td>\n";
2300         }
2301 }
2302
2303 ## ......................................................................
2304 ## functions printing large fragments of HTML
2305
2306 sub fill_from_file_info {
2307         my ($diff, @parents) = @_;
2308
2309         $diff->{'from_file'} = [ ];
2310         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2311         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2312                 if ($diff->{'status'}[$i] eq 'R' ||
2313                     $diff->{'status'}[$i] eq 'C') {
2314                         $diff->{'from_file'}[$i] =
2315                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2316                 }
2317         }
2318
2319         return $diff;
2320 }
2321
2322 # parameters can be strings, or references to arrays of strings
2323 sub from_ids_eq {
2324         my ($a, $b) = @_;
2325
2326         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2327                 for (my $i = 0; $i < @$a; ++$i) {
2328                         return 0 unless ($a->[$i] eq $b->[$i]);
2329                 }
2330                 return 1;
2331         } elsif (!ref($a) && !ref($b)) {
2332                 return $a eq $b;
2333         } else {
2334                 return 0;
2335         }
2336 }
2337
2338
2339 sub git_difftree_body {
2340         my ($difftree, $hash, @parents) = @_;
2341         my ($parent) = $parents[0];
2342         my ($have_blame) = gitweb_check_feature('blame');
2343         print "<div class=\"list_head\">\n";
2344         if ($#{$difftree} > 10) {
2345                 print(($#{$difftree} + 1) . " files changed:\n");
2346         }
2347         print "</div>\n";
2348
2349         print "<table class=\"" .
2350               (@parents > 1 ? "combined " : "") .
2351               "diff_tree\">\n";
2352         my $alternate = 1;
2353         my $patchno = 0;
2354         foreach my $line (@{$difftree}) {
2355                 my $diff;
2356                 if (ref($line) eq "HASH") {
2357                         # pre-parsed (or generated by hand)
2358                         $diff = $line;
2359                 } else {
2360                         $diff = parse_difftree_raw_line($line);
2361                 }
2362
2363                 if ($alternate) {
2364                         print "<tr class=\"dark\">\n";
2365                 } else {
2366                         print "<tr class=\"light\">\n";
2367                 }
2368                 $alternate ^= 1;
2369
2370                 if (exists $diff->{'nparents'}) { # combined diff
2371
2372                         fill_from_file_info($diff, @parents)
2373                                 unless exists $diff->{'from_file'};
2374
2375                         if ($diff->{'to_id'} ne ('0' x 40)) {
2376                                 # file exists in the result (child) commit
2377                                 print "<td>" .
2378                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2379                                                              file_name=>$diff->{'to_file'},
2380                                                              hash_base=>$hash),
2381                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2382                                       "</td>\n";
2383                         } else {
2384                                 print "<td>" .
2385                                       esc_path($diff->{'to_file'}) .
2386                                       "</td>\n";
2387                         }
2388
2389                         if ($action eq 'commitdiff') {
2390                                 # link to patch
2391                                 $patchno++;
2392                                 print "<td class=\"link\">" .
2393                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2394                                       " | " .
2395                                       "</td>\n";
2396                         }
2397
2398                         my $has_history = 0;
2399                         my $not_deleted = 0;
2400                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2401                                 my $hash_parent = $parents[$i];
2402                                 my $from_hash = $diff->{'from_id'}[$i];
2403                                 my $from_path = $diff->{'from_file'}[$i];
2404                                 my $status = $diff->{'status'}[$i];
2405
2406                                 $has_history ||= ($status ne 'A');
2407                                 $not_deleted ||= ($status ne 'D');
2408
2409                                 if ($status eq 'A') {
2410                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2411                                 } elsif ($status eq 'D') {
2412                                         print "<td class=\"link\">" .
2413                                               $cgi->a({-href => href(action=>"blob",
2414                                                                      hash_base=>$hash,
2415                                                                      hash=>$from_hash,
2416                                                                      file_name=>$from_path)},
2417                                                       "blob" . ($i+1)) .
2418                                               " | </td>\n";
2419                                 } else {
2420                                         if ($diff->{'to_id'} eq $from_hash) {
2421                                                 print "<td class=\"link nochange\">";
2422                                         } else {
2423                                                 print "<td class=\"link\">";
2424                                         }
2425                                         print $cgi->a({-href => href(action=>"blobdiff",
2426                                                                      hash=>$diff->{'to_id'},
2427                                                                      hash_parent=>$from_hash,
2428                                                                      hash_base=>$hash,
2429                                                                      hash_parent_base=>$hash_parent,
2430                                                                      file_name=>$diff->{'to_file'},
2431                                                                      file_parent=>$from_path)},
2432                                                       "diff" . ($i+1)) .
2433                                               " | </td>\n";
2434                                 }
2435                         }
2436
2437                         print "<td class=\"link\">";
2438                         if ($not_deleted) {
2439                                 print $cgi->a({-href => href(action=>"blob",
2440                                                              hash=>$diff->{'to_id'},
2441                                                              file_name=>$diff->{'to_file'},
2442                                                              hash_base=>$hash)},
2443                                               "blob");
2444                                 print " | " if ($has_history);
2445                         }
2446                         if ($has_history) {
2447                                 print $cgi->a({-href => href(action=>"history",
2448                                                              file_name=>$diff->{'to_file'},
2449                                                              hash_base=>$hash)},
2450                                               "history");
2451                         }
2452                         print "</td>\n";
2453
2454                         print "</tr>\n";
2455                         next; # instead of 'else' clause, to avoid extra indent
2456                 }
2457                 # else ordinary diff
2458
2459                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2460                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2461                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2462                         $to_mode_oct = oct $diff->{'to_mode'};
2463                         if (S_ISREG($to_mode_oct)) { # only for regular file
2464                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2465                         }
2466                         $to_file_type = file_type($diff->{'to_mode'});
2467                 }
2468                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2469                         $from_mode_oct = oct $diff->{'from_mode'};
2470                         if (S_ISREG($to_mode_oct)) { # only for regular file
2471                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2472                         }
2473                         $from_file_type = file_type($diff->{'from_mode'});
2474                 }
2475
2476                 if ($diff->{'status'} eq "A") { # created
2477                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2478                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2479                         $mode_chng   .= "]</span>";
2480                         print "<td>";
2481                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2482                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2483                                       -class => "list"}, esc_path($diff->{'file'}));
2484                         print "</td>\n";
2485                         print "<td>$mode_chng</td>\n";
2486                         print "<td class=\"link\">";
2487                         if ($action eq 'commitdiff') {
2488                                 # link to patch
2489                                 $patchno++;
2490                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2491                                 print " | ";
2492                         }
2493                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2494                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2495                                       "blob");
2496                         print "</td>\n";
2497
2498                 } elsif ($diff->{'status'} eq "D") { # deleted
2499                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2500                         print "<td>";
2501                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2502                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2503                                        -class => "list"}, esc_path($diff->{'file'}));
2504                         print "</td>\n";
2505                         print "<td>$mode_chng</td>\n";
2506                         print "<td class=\"link\">";
2507                         if ($action eq 'commitdiff') {
2508                                 # link to patch
2509                                 $patchno++;
2510                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2511                                 print " | ";
2512                         }
2513                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2514                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2515                                       "blob") . " | ";
2516                         if ($have_blame) {
2517                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2518                                                              file_name=>$diff->{'file'})},
2519                                               "blame") . " | ";
2520                         }
2521                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2522                                                      file_name=>$diff->{'file'})},
2523                                       "history");
2524                         print "</td>\n";
2525
2526                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2527                         my $mode_chnge = "";
2528                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2529                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2530                                 if ($from_file_type ne $to_file_type) {
2531                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2532                                 }
2533                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2534                                         if ($from_mode_str && $to_mode_str) {
2535                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2536                                         } elsif ($to_mode_str) {
2537                                                 $mode_chnge .= " mode: $to_mode_str";
2538                                         }
2539                                 }
2540                                 $mode_chnge .= "]</span>\n";
2541                         }
2542                         print "<td>";
2543                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2544                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2545                                       -class => "list"}, esc_path($diff->{'file'}));
2546                         print "</td>\n";
2547                         print "<td>$mode_chnge</td>\n";
2548                         print "<td class=\"link\">";
2549                         if ($action eq 'commitdiff') {
2550                                 # link to patch
2551                                 $patchno++;
2552                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2553                                       " | ";
2554                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2555                                 # "commit" view and modified file (not onlu mode changed)
2556                                 print $cgi->a({-href => href(action=>"blobdiff",
2557                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2558                                                              hash_base=>$hash, hash_parent_base=>$parent,
2559                                                              file_name=>$diff->{'file'})},
2560                                               "diff") .
2561                                       " | ";
2562                         }
2563                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2564                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2565                                        "blob") . " | ";
2566                         if ($have_blame) {
2567                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2568                                                              file_name=>$diff->{'file'})},
2569                                               "blame") . " | ";
2570                         }
2571                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2572                                                      file_name=>$diff->{'file'})},
2573                                       "history");
2574                         print "</td>\n";
2575
2576                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2577                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2578                         my $nstatus = $status_name{$diff->{'status'}};
2579                         my $mode_chng = "";
2580                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2581                                 # mode also for directories, so we cannot use $to_mode_str
2582                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2583                         }
2584                         print "<td>" .
2585                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2586                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2587                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2588                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2589                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2590                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2591                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2592                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2593                               "<td class=\"link\">";
2594                         if ($action eq 'commitdiff') {
2595                                 # link to patch
2596                                 $patchno++;
2597                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2598                                       " | ";
2599                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2600                                 # "commit" view and modified file (not only pure rename or copy)
2601                                 print $cgi->a({-href => href(action=>"blobdiff",
2602                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2603                                                              hash_base=>$hash, hash_parent_base=>$parent,
2604                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2605                                               "diff") .
2606                                       " | ";
2607                         }
2608                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2609                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2610                                       "blob") . " | ";
2611                         if ($have_blame) {
2612                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2613                                                              file_name=>$diff->{'to_file'})},
2614                                               "blame") . " | ";
2615                         }
2616                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2617                                                     file_name=>$diff->{'to_file'})},
2618                                       "history");
2619                         print "</td>\n";
2620
2621                 } # we should not encounter Unmerged (U) or Unknown (X) status
2622                 print "</tr>\n";
2623         }
2624         print "</table>\n";
2625 }
2626
2627 sub git_patchset_body {
2628         my ($fd, $difftree, $hash, @hash_parents) = @_;
2629         my ($hash_parent) = $hash_parents[0];
2630
2631         my $patch_idx = 0;
2632         my $patch_number = 0;
2633         my $patch_line;
2634         my $diffinfo;
2635         my (%from, %to);
2636
2637         print "<div class=\"patchset\">\n";
2638
2639         # skip to first patch
2640         while ($patch_line = <$fd>) {
2641                 chomp $patch_line;
2642
2643                 last if ($patch_line =~ m/^diff /);
2644         }
2645
2646  PATCH:
2647         while ($patch_line) {
2648                 my @diff_header;
2649                 my ($from_id, $to_id);
2650
2651                 # git diff header
2652                 #assert($patch_line =~ m/^diff /) if DEBUG;
2653                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2654                 $patch_number++;
2655                 push @diff_header, $patch_line;
2656
2657                 # extended diff header
2658         EXTENDED_HEADER:
2659                 while ($patch_line = <$fd>) {
2660                         chomp $patch_line;
2661
2662                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2663
2664                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2665                                 $from_id = $1;
2666                                 $to_id   = $2;
2667                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2668                                 $from_id = [ split(',', $1) ];
2669                                 $to_id   = $2;
2670                         }
2671
2672                         push @diff_header, $patch_line;
2673                 }
2674                 my $last_patch_line = $patch_line;
2675
2676                 # check if current patch belong to current raw line
2677                 # and parse raw git-diff line if needed
2678                 if (defined $diffinfo &&
2679                     defined $from_id && defined $to_id &&
2680                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2681                     $diffinfo->{'to_id'} eq $to_id) {
2682                         # this is continuation of a split patch
2683                         print "<div class=\"patch cont\">\n";
2684                 } else {
2685                         # advance raw git-diff output if needed
2686                         $patch_idx++ if defined $diffinfo;
2687
2688                         # read and prepare patch information
2689                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2690                                 # pre-parsed (or generated by hand)
2691                                 $diffinfo = $difftree->[$patch_idx];
2692                         } else {
2693                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2694                         }
2695                         if ($diffinfo->{'nparents'}) {
2696                                 # combined diff
2697                                 $from{'file'} = [];
2698                                 $from{'href'} = [];
2699                                 fill_from_file_info($diffinfo, @hash_parents)
2700                                         unless exists $diffinfo->{'from_file'};
2701                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2702                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2703                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2704                                                 $from{'href'}[$i] = href(action=>"blob",
2705                                                                          hash_base=>$hash_parents[$i],
2706                                                                          hash=>$diffinfo->{'from_id'}[$i],
2707                                                                          file_name=>$from{'file'}[$i]);
2708                                         } else {
2709                                                 $from{'href'}[$i] = undef;
2710                                         }
2711                                 }
2712                         } else {
2713                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2714                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2715                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2716                                                              hash=>$diffinfo->{'from_id'},
2717                                                              file_name=>$from{'file'});
2718                                 } else {
2719                                         delete $from{'href'};
2720                                 }
2721                         }
2722                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2723                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2724                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2725                                                    hash=>$diffinfo->{'to_id'},
2726                                                    file_name=>$to{'file'});
2727                         } else {
2728                                 delete $to{'href'};
2729                         }
2730                         # this is first patch for raw difftree line with $patch_idx index
2731                         # we index @$difftree array from 0, but number patches from 1
2732                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2733                 }
2734
2735                 # print "git diff" header
2736                 $patch_line = shift @diff_header;
2737                 if ($diffinfo->{'nparents'}) {
2738
2739                         # combined diff
2740                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2741                         if ($to{'href'}) {
2742                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2743                                                        esc_path($to{'file'}));
2744                         } else { # file was deleted
2745                                 $patch_line .= esc_path($to{'file'});
2746                         }
2747
2748                 } else {
2749
2750                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2751                         if ($from{'href'}) {
2752                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2753                                                        'a/' . esc_path($from{'file'}));
2754                         } else { # file was added
2755                                 $patch_line .= 'a/' . esc_path($from{'file'});
2756                         }
2757                         $patch_line .= ' ';
2758                         if ($to{'href'}) {
2759                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2760                                                        'b/' . esc_path($to{'file'}));
2761                         } else { # file was deleted
2762                                 $patch_line .= 'b/' . esc_path($to{'file'});
2763                         }
2764
2765                 }
2766                 print "<div class=\"diff header\">$patch_line</div>\n";
2767
2768                 # print extended diff header
2769                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2770         EXTENDED_HEADER:
2771                 foreach $patch_line (@diff_header) {
2772                         # match <path>
2773                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2774                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2775                                                        esc_path($from{'file'}));
2776                         }
2777                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2778                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2779                                                        esc_path($to{'file'}));
2780                         }
2781                         # match single <mode>
2782                         if ($patch_line =~ m/\s(\d{6})$/) {
2783                                 $patch_line .= '<span class="info"> (' .
2784                                                file_type_long($1) .
2785                                                ')</span>';
2786                         }
2787                         # match <hash>
2788                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2789                                 # can match only for combined diff
2790                                 $patch_line = 'index ';
2791                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2792                                         if ($from{'href'}[$i]) {
2793                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2794                                                                         -class=>"hash"},
2795                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2796                                         } else {
2797                                                 $patch_line .= '0' x 7;
2798                                         }
2799                                         # separator
2800                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2801                                 }
2802                                 $patch_line .= '..';
2803                                 if ($to{'href'}) {
2804                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2805                                                                substr($diffinfo->{'to_id'},0,7));
2806                                 } else {
2807                                         $patch_line .= '0' x 7;
2808                                 }
2809
2810                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2811                                 # can match only for ordinary diff
2812                                 my ($from_link, $to_link);
2813                                 if ($from{'href'}) {
2814                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2815                                                              substr($diffinfo->{'from_id'},0,7));
2816                                 } else {
2817                                         $from_link = '0' x 7;
2818                                 }
2819                                 if ($to{'href'}) {
2820                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2821                                                            substr($diffinfo->{'to_id'},0,7));
2822                                 } else {
2823                                         $to_link = '0' x 7;
2824                                 }
2825                                 #affirm {
2826                                 #       my ($from_hash, $to_hash) =
2827                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2828                                 #       my ($from_id, $to_id) =
2829                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2830                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2831                                 #} if DEBUG;
2832                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2833                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2834                         }
2835                         print $patch_line . "<br/>\n";
2836                 }
2837                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2838
2839                 # from-file/to-file diff header
2840                 $patch_line = $last_patch_line;
2841                 if (! $patch_line) {
2842                         print "</div>\n"; # class="patch"
2843                         last PATCH;
2844                 }
2845                 next PATCH if ($patch_line =~ m/^diff /);
2846                 #assert($patch_line =~ m/^---/) if DEBUG;
2847                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2848                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2849                         $patch_line = '--- a/' .
2850                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2851                                               esc_path($from{'file'}));
2852                 }
2853                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2854
2855                 $patch_line = <$fd>;
2856                 chomp $patch_line;
2857
2858                 #assert($patch_line =~ m/^+++/) if DEBUG;
2859                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2860                         $patch_line = '+++ b/' .
2861                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2862                                               esc_path($to{'file'}));
2863                 }
2864                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2865
2866                 # the patch itself
2867         LINE:
2868                 while ($patch_line = <$fd>) {
2869                         chomp $patch_line;
2870
2871                         next PATCH if ($patch_line =~ m/^diff /);
2872
2873                         print format_diff_line($patch_line, \%from, \%to);
2874                 }
2875
2876         } continue {
2877                 print "</div>\n"; # class="patch"
2878         }
2879         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2880
2881         print "</div>\n"; # class="patchset"
2882 }
2883
2884 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2885
2886 sub git_project_list_body {
2887         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2888
2889         my ($check_forks) = gitweb_check_feature('forks');
2890
2891         my @projects;
2892         foreach my $pr (@$projlist) {
2893                 my (@aa) = git_get_last_activity($pr->{'path'});
2894                 unless (@aa) {
2895                         next;
2896                 }
2897                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2898                 if (!defined $pr->{'descr'}) {
2899                         my $descr = git_get_project_description($pr->{'path'}) || "";
2900                         $pr->{'descr_long'} = decode_utf8($descr);
2901                         $pr->{'descr'} = chop_str($descr, 25, 5);
2902                 }
2903                 if (!defined $pr->{'owner'}) {
2904                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2905                 }
2906                 if ($check_forks) {
2907                         my $pname = $pr->{'path'};
2908                         if (($pname =~ s/\.git$//) &&
2909                             ($pname !~ /\/$/) &&
2910                             (-d "$projectroot/$pname")) {
2911                                 $pr->{'forks'} = "-d $projectroot/$pname";
2912                         }
2913                         else {
2914                                 $pr->{'forks'} = 0;
2915                         }
2916                 }
2917                 push @projects, $pr;
2918         }
2919
2920         $order ||= $default_projects_order;
2921         $from = 0 unless defined $from;
2922         $to = $#projects if (!defined $to || $#projects < $to);
2923
2924         print "<table class=\"project_list\">\n";
2925         unless ($no_header) {
2926                 print "<tr>\n";
2927                 if ($check_forks) {
2928                         print "<th></th>\n";
2929                 }
2930                 if ($order eq "project") {
2931                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2932                         print "<th>Project</th>\n";
2933                 } else {
2934                         print "<th>" .
2935                               $cgi->a({-href => href(project=>undef, order=>'project'),
2936                                        -class => "header"}, "Project") .
2937                               "</th>\n";
2938                 }
2939                 if ($order eq "descr") {
2940                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2941                         print "<th>Description</th>\n";
2942                 } else {
2943                         print "<th>" .
2944                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2945                                        -class => "header"}, "Description") .
2946                               "</th>\n";
2947                 }
2948                 if ($order eq "owner") {
2949                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2950                         print "<th>Owner</th>\n";
2951                 } else {
2952                         print "<th>" .
2953                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2954                                        -class => "header"}, "Owner") .
2955                               "</th>\n";
2956                 }
2957                 if ($order eq "age") {
2958                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2959                         print "<th>Last Change</th>\n";
2960                 } else {
2961                         print "<th>" .
2962                               $cgi->a({-href => href(project=>undef, order=>'age'),
2963                                        -class => "header"}, "Last Change") .
2964                               "</th>\n";
2965                 }
2966                 print "<th></th>\n" .
2967                       "</tr>\n";
2968         }
2969         my $alternate = 1;
2970         for (my $i = $from; $i <= $to; $i++) {
2971                 my $pr = $projects[$i];
2972                 if ($alternate) {
2973                         print "<tr class=\"dark\">\n";
2974                 } else {
2975                         print "<tr class=\"light\">\n";
2976                 }
2977                 $alternate ^= 1;
2978                 if ($check_forks) {
2979                         print "<td>";
2980                         if ($pr->{'forks'}) {
2981                                 print "<!-- $pr->{'forks'} -->\n";
2982                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2983                         }
2984                         print "</td>\n";
2985                 }
2986                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2987                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2988                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2989                                         -class => "list", -title => $pr->{'descr_long'}},
2990                                         esc_html($pr->{'descr'})) . "</td>\n" .
2991                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2992                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2993                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
2994                       "<td class=\"link\">" .
2995                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2996                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2997                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2998                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2999                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3000                       "</td>\n" .
3001                       "</tr>\n";
3002         }
3003         if (defined $extra) {
3004                 print "<tr>\n";
3005                 if ($check_forks) {
3006                         print "<td></td>\n";
3007                 }
3008                 print "<td colspan=\"5\">$extra</td>\n" .
3009                       "</tr>\n";
3010         }
3011         print "</table>\n";
3012 }
3013
3014 sub git_shortlog_body {
3015         # uses global variable $project
3016         my ($commitlist, $from, $to, $refs, $extra) = @_;
3017
3018         my $have_snapshot = gitweb_have_snapshot();
3019
3020         $from = 0 unless defined $from;
3021         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3022
3023         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3024         my $alternate = 1;
3025         for (my $i = $from; $i <= $to; $i++) {
3026                 my %co = %{$commitlist->[$i]};
3027                 my $commit = $co{'id'};
3028                 my $ref = format_ref_marker($refs, $commit);
3029                 if ($alternate) {
3030                         print "<tr class=\"dark\">\n";
3031                 } else {
3032                         print "<tr class=\"light\">\n";
3033                 }
3034                 $alternate ^= 1;
3035                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3036                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3037                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3038                       "<td>";
3039                 print format_subject_html($co{'title'}, $co{'title_short'},
3040                                           href(action=>"commit", hash=>$commit), $ref);
3041                 print "</td>\n" .
3042                       "<td class=\"link\">" .
3043                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3044                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3045                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3046                 if ($have_snapshot) {
3047                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3048                 }
3049                 print "</td>\n" .
3050                       "</tr>\n";
3051         }
3052         if (defined $extra) {
3053                 print "<tr>\n" .
3054                       "<td colspan=\"4\">$extra</td>\n" .
3055                       "</tr>\n";
3056         }
3057         print "</table>\n";
3058 }
3059
3060 sub git_history_body {
3061         # Warning: assumes constant type (blob or tree) during history
3062         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3063
3064         $from = 0 unless defined $from;
3065         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3066
3067         print "<table class=\"history\" cellspacing=\"0\">\n";
3068         my $alternate = 1;
3069         for (my $i = $from; $i <= $to; $i++) {
3070                 my %co = %{$commitlist->[$i]};
3071                 if (!%co) {
3072                         next;
3073                 }
3074                 my $commit = $co{'id'};
3075
3076                 my $ref = format_ref_marker($refs, $commit);
3077
3078                 if ($alternate) {
3079                         print "<tr class=\"dark\">\n";
3080                 } else {
3081                         print "<tr class=\"light\">\n";
3082                 }
3083                 $alternate ^= 1;
3084                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3085                       # shortlog uses      chop_str($co{'author_name'}, 10)
3086                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3087                       "<td>";
3088                 # originally git_history used chop_str($co{'title'}, 50)
3089                 print format_subject_html($co{'title'}, $co{'title_short'},
3090                                           href(action=>"commit", hash=>$commit), $ref);
3091                 print "</td>\n" .
3092                       "<td class=\"link\">" .
3093                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3094                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3095
3096                 if ($ftype eq 'blob') {
3097                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3098                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3099                         if (defined $blob_current && defined $blob_parent &&
3100                                         $blob_current ne $blob_parent) {
3101                                 print " | " .
3102                                         $cgi->a({-href => href(action=>"blobdiff",
3103                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3104                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3105                                                                file_name=>$file_name)},
3106                                                 "diff to current");
3107                         }
3108                 }
3109                 print "</td>\n" .
3110                       "</tr>\n";
3111         }
3112         if (defined $extra) {
3113                 print "<tr>\n" .
3114                       "<td colspan=\"4\">$extra</td>\n" .
3115                       "</tr>\n";
3116         }
3117         print "</table>\n";
3118 }
3119
3120 sub git_tags_body {
3121         # uses global variable $project
3122         my ($taglist, $from, $to, $extra) = @_;
3123         $from = 0 unless defined $from;
3124         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3125
3126         print "<table class=\"tags\" cellspacing=\"0\">\n";
3127         my $alternate = 1;
3128         for (my $i = $from; $i <= $to; $i++) {
3129                 my $entry = $taglist->[$i];
3130                 my %tag = %$entry;
3131                 my $comment = $tag{'subject'};
3132                 my $comment_short;
3133                 if (defined $comment) {
3134                         $comment_short = chop_str($comment, 30, 5);
3135                 }
3136                 if ($alternate) {
3137                         print "<tr class=\"dark\">\n";
3138                 } else {
3139                         print "<tr class=\"light\">\n";
3140                 }
3141                 $alternate ^= 1;
3142                 if (defined $tag{'age'}) {
3143                         print "<td><i>$tag{'age'}</i></td>\n";
3144                 } else {
3145                         print "<td></td>\n";
3146                 }
3147                 print "<td>" .
3148                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3149                                -class => "list name"}, esc_html($tag{'name'})) .
3150                       "</td>\n" .
3151                       "<td>";
3152                 if (defined $comment) {
3153                         print format_subject_html($comment, $comment_short,
3154                                                   href(action=>"tag", hash=>$tag{'id'}));
3155                 }
3156                 print "</td>\n" .
3157                       "<td class=\"selflink\">";
3158                 if ($tag{'type'} eq "tag") {
3159                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3160                 } else {
3161                         print "&nbsp;";
3162                 }
3163                 print "</td>\n" .
3164                       "<td class=\"link\">" . " | " .
3165                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3166                 if ($tag{'reftype'} eq "commit") {
3167                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3168                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3169                 } elsif ($tag{'reftype'} eq "blob") {
3170                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3171                 }
3172                 print "</td>\n" .
3173                       "</tr>";
3174         }
3175         if (defined $extra) {
3176                 print "<tr>\n" .
3177                       "<td colspan=\"5\">$extra</td>\n" .
3178                       "</tr>\n";
3179         }
3180         print "</table>\n";
3181 }
3182
3183 sub git_heads_body {
3184         # uses global variable $project
3185         my ($headlist, $head, $from, $to, $extra) = @_;
3186         $from = 0 unless defined $from;
3187         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3188
3189         print "<table class=\"heads\" cellspacing=\"0\">\n";
3190         my $alternate = 1;
3191         for (my $i = $from; $i <= $to; $i++) {
3192                 my $entry = $headlist->[$i];
3193                 my %ref = %$entry;
3194                 my $curr = $ref{'id'} eq $head;
3195                 if ($alternate) {
3196                         print "<tr class=\"dark\">\n";
3197                 } else {
3198                         print "<tr class=\"light\">\n";
3199                 }
3200                 $alternate ^= 1;
3201                 print "<td><i>$ref{'age'}</i></td>\n" .
3202                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3203                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3204                                -class => "list name"},esc_html($ref{'name'})) .
3205                       "</td>\n" .
3206                       "<td class=\"link\">" .
3207                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3208                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3209                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3210                       "</td>\n" .
3211                       "</tr>";
3212         }
3213         if (defined $extra) {
3214                 print "<tr>\n" .
3215                       "<td colspan=\"3\">$extra</td>\n" .
3216                       "</tr>\n";
3217         }
3218         print "</table>\n";
3219 }
3220
3221 sub git_search_grep_body {
3222         my ($commitlist, $from, $to, $extra) = @_;
3223         $from = 0 unless defined $from;
3224         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3225
3226         print "<table class=\"grep\" cellspacing=\"0\">\n";
3227         my $alternate = 1;
3228         for (my $i = $from; $i <= $to; $i++) {
3229                 my %co = %{$commitlist->[$i]};
3230                 if (!%co) {
3231                         next;
3232                 }
3233                 my $commit = $co{'id'};
3234                 if ($alternate) {
3235                         print "<tr class=\"dark\">\n";
3236                 } else {
3237                         print "<tr class=\"light\">\n";
3238                 }
3239                 $alternate ^= 1;
3240                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3241                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3242                       "<td>" .
3243                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3244                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3245                 my $comment = $co{'comment'};
3246                 foreach my $line (@$comment) {
3247                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3248                                 my $lead = esc_html($1) || "";
3249                                 $lead = chop_str($lead, 30, 10);
3250                                 my $match = esc_html($2) || "";
3251                                 my $trail = esc_html($3) || "";
3252                                 $trail = chop_str($trail, 30, 10);
3253                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3254                                 print chop_str($text, 80, 5) . "<br/>\n";
3255                         }
3256                 }
3257                 print "</td>\n" .
3258                       "<td class=\"link\">" .
3259                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3260                       " | " .
3261                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3262                 print "</td>\n" .
3263                       "</tr>\n";
3264         }
3265         if (defined $extra) {
3266                 print "<tr>\n" .
3267                       "<td colspan=\"3\">$extra</td>\n" .
3268                       "</tr>\n";
3269         }
3270         print "</table>\n";
3271 }
3272
3273 ## ======================================================================
3274 ## ======================================================================
3275 ## actions
3276
3277 sub git_project_list {
3278         my $order = $cgi->param('o');
3279         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3280                 die_error(undef, "Unknown order parameter");
3281         }
3282
3283         my @list = git_get_projects_list();
3284         if (!@list) {
3285                 die_error(undef, "No projects found");
3286         }
3287
3288         git_header_html();
3289         if (-f $home_text) {
3290                 print "<div class=\"index_include\">\n";
3291                 open (my $fd, $home_text);
3292                 print <$fd>;
3293                 close $fd;
3294                 print "</div>\n";
3295         }
3296         git_project_list_body(\@list, $order);
3297         git_footer_html();
3298 }
3299
3300 sub git_forks {
3301         my $order = $cgi->param('o');
3302         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3303                 die_error(undef, "Unknown order parameter");
3304         }
3305
3306         my @list = git_get_projects_list($project);
3307         if (!@list) {
3308                 die_error(undef, "No forks found");
3309         }
3310
3311         git_header_html();
3312         git_print_page_nav('','');
3313         git_print_header_div('summary', "$project forks");
3314         git_project_list_body(\@list, $order);
3315         git_footer_html();
3316 }
3317
3318 sub git_project_index {
3319         my @projects = git_get_projects_list($project);
3320
3321         print $cgi->header(
3322                 -type => 'text/plain',
3323                 -charset => 'utf-8',
3324                 -content_disposition => 'inline; filename="index.aux"');
3325
3326         foreach my $pr (@projects) {
3327                 if (!exists $pr->{'owner'}) {
3328                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3329                 }
3330
3331                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3332                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3333                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3334                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3335                 $path  =~ s/ /\+/g;
3336                 $owner =~ s/ /\+/g;
3337
3338                 print "$path $owner\n";
3339         }
3340 }
3341
3342 sub git_summary {
3343         my $descr = git_get_project_description($project) || "none";
3344         my %co = parse_commit("HEAD");
3345         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3346         my $head = $co{'id'};
3347
3348         my $owner = git_get_project_owner($project);
3349
3350         my $refs = git_get_references();
3351         # These get_*_list functions return one more to allow us to see if
3352         # there are more ...
3353         my @taglist  = git_get_tags_list(16);
3354         my @headlist = git_get_heads_list(16);
3355         my @forklist;
3356         my ($check_forks) = gitweb_check_feature('forks');
3357
3358         if ($check_forks) {
3359                 @forklist = git_get_projects_list($project);
3360         }
3361
3362         git_header_html();
3363         git_print_page_nav('summary','', $head);
3364
3365         print "<div class=\"title\">&nbsp;</div>\n";
3366         print "<table cellspacing=\"0\">\n" .
3367               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3368               "<tr><td>owner</td><td>$owner</td></tr>\n";
3369         if (defined $cd{'rfc2822'}) {
3370                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3371         }
3372
3373         # use per project git URL list in $projectroot/$project/cloneurl
3374         # or make project git URL from git base URL and project name
3375         my $url_tag = "URL";
3376         my @url_list = git_get_project_url_list($project);
3377         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3378         foreach my $git_url (@url_list) {
3379                 next unless $git_url;
3380                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3381                 $url_tag = "";
3382         }
3383         print "</table>\n";
3384
3385         if (-s "$projectroot/$project/README.html") {
3386                 if (open my $fd, "$projectroot/$project/README.html") {
3387                         print "<div class=\"title\">readme</div>\n";
3388                         print $_ while (<$fd>);
3389                         close $fd;
3390                 }
3391         }
3392
3393         # we need to request one more than 16 (0..15) to check if
3394         # those 16 are all
3395         my @commitlist = $head ? parse_commits($head, 17) : ();
3396         if (@commitlist) {
3397                 git_print_header_div('shortlog');
3398                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3399                                   $#commitlist <=  15 ? undef :
3400                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3401         }
3402
3403         if (@taglist) {
3404                 git_print_header_div('tags');
3405                 git_tags_body(\@taglist, 0, 15,
3406                               $#taglist <=  15 ? undef :
3407                               $cgi->a({-href => href(action=>"tags")}, "..."));
3408         }
3409
3410         if (@headlist) {
3411                 git_print_header_div('heads');
3412                 git_heads_body(\@headlist, $head, 0, 15,
3413                                $#headlist <= 15 ? undef :
3414                                $cgi->a({-href => href(action=>"heads")}, "..."));
3415         }
3416
3417         if (@forklist) {
3418                 git_print_header_div('forks');
3419                 git_project_list_body(\@forklist, undef, 0, 15,
3420                                       $#forklist <= 15 ? undef :
3421                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3422                                       'noheader');
3423         }
3424
3425         git_footer_html();
3426 }
3427
3428 sub git_tag {
3429         my $head = git_get_head_hash($project);
3430         git_header_html();
3431         git_print_page_nav('','', $head,undef,$head);
3432         my %tag = parse_tag($hash);
3433
3434         if (! %tag) {
3435                 die_error(undef, "Unknown tag object");
3436         }
3437
3438         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3439         print "<div class=\"title_text\">\n" .
3440               "<table cellspacing=\"0\">\n" .
3441               "<tr>\n" .
3442               "<td>object</td>\n" .
3443               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3444                                $tag{'object'}) . "</td>\n" .
3445               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3446                                               $tag{'type'}) . "</td>\n" .
3447               "</tr>\n";
3448         if (defined($tag{'author'})) {
3449                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3450                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3451                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3452                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3453                         "</td></tr>\n";
3454         }
3455         print "</table>\n\n" .
3456               "</div>\n";
3457         print "<div class=\"page_body\">";
3458         my $comment = $tag{'comment'};
3459         foreach my $line (@$comment) {
3460                 chomp $line;
3461                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3462         }
3463         print "</div>\n";
3464         git_footer_html();
3465 }
3466
3467 sub git_blame2 {
3468         my $fd;
3469         my $ftype;
3470
3471         my ($have_blame) = gitweb_check_feature('blame');
3472         if (!$have_blame) {
3473                 die_error('403 Permission denied', "Permission denied");
3474         }
3475         die_error('404 Not Found', "File name not defined") if (!$file_name);
3476         $hash_base ||= git_get_head_hash($project);
3477         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3478         my %co = parse_commit($hash_base)
3479                 or die_error(undef, "Reading commit failed");
3480         if (!defined $hash) {
3481                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3482                         or die_error(undef, "Error looking up file");
3483         }
3484         $ftype = git_get_type($hash);
3485         if ($ftype !~ "blob") {
3486                 die_error('400 Bad Request', "Object is not a blob");
3487         }
3488         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3489               $file_name, $hash_base)
3490                 or die_error(undef, "Open git-blame failed");
3491         git_header_html();
3492         my $formats_nav =
3493                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3494                         "blob") .
3495                 " | " .
3496                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3497                         "history") .
3498                 " | " .
3499                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3500                         "HEAD");
3501         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3502         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3503         git_print_page_path($file_name, $ftype, $hash_base);
3504         my @rev_color = (qw(light2 dark2));
3505         my $num_colors = scalar(@rev_color);
3506         my $current_color = 0;
3507         my $last_rev;
3508         print <<HTML;
3509 <div class="page_body">
3510 <table class="blame">
3511 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3512 HTML
3513         my %metainfo = ();
3514         while (1) {
3515                 $_ = <$fd>;
3516                 last unless defined $_;
3517                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3518                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3519                 if (!exists $metainfo{$full_rev}) {
3520                         $metainfo{$full_rev} = {};
3521                 }
3522                 my $meta = $metainfo{$full_rev};
3523                 while (<$fd>) {
3524                         last if (s/^\t//);
3525                         if (/^(\S+) (.*)$/) {
3526                                 $meta->{$1} = $2;
3527                         }
3528                 }
3529                 my $data = $_;
3530                 chomp $data;
3531                 my $rev = substr($full_rev, 0, 8);
3532                 my $author = $meta->{'author'};
3533                 my %date = parse_date($meta->{'author-time'},
3534                                       $meta->{'author-tz'});
3535                 my $date = $date{'iso-tz'};
3536                 if ($group_size) {
3537                         $current_color = ++$current_color % $num_colors;
3538                 }
3539                 print "<tr class=\"$rev_color[$current_color]\">\n";
3540                 if ($group_size) {
3541                         print "<td class=\"sha1\"";
3542                         print " title=\"". esc_html($author) . ", $date\"";
3543                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3544                         print ">";
3545                         print $cgi->a({-href => href(action=>"commit",
3546                                                      hash=>$full_rev,
3547                                                      file_name=>$file_name)},
3548                                       esc_html($rev));
3549                         print "</td>\n";
3550                 }
3551                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3552                         or die_error(undef, "Open git-rev-parse failed");
3553                 my $parent_commit = <$dd>;
3554                 close $dd;
3555                 chomp($parent_commit);
3556                 my $blamed = href(action => 'blame',
3557                                   file_name => $meta->{'filename'},
3558                                   hash_base => $parent_commit);
3559                 print "<td class=\"linenr\">";
3560                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3561                                 -id => "l$lineno",
3562                                 -class => "linenr" },
3563                               esc_html($lineno));
3564                 print "</td>";
3565                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3566                 print "</tr>\n";
3567         }
3568         print "</table>\n";
3569         print "</div>";
3570         close $fd
3571                 or print "Reading blob failed\n";
3572         git_footer_html();
3573 }
3574
3575 sub git_blame {
3576         my $fd;
3577
3578         my ($have_blame) = gitweb_check_feature('blame');
3579         if (!$have_blame) {
3580                 die_error('403 Permission denied', "Permission denied");
3581         }
3582         die_error('404 Not Found', "File name not defined") if (!$file_name);
3583         $hash_base ||= git_get_head_hash($project);
3584         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3585         my %co = parse_commit($hash_base)
3586                 or die_error(undef, "Reading commit failed");
3587         if (!defined $hash) {
3588                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3589                         or die_error(undef, "Error lookup file");
3590         }
3591         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3592                 or die_error(undef, "Open git-annotate failed");
3593         git_header_html();
3594         my $formats_nav =
3595                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3596                         "blob") .
3597                 " | " .
3598                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3599                         "history") .
3600                 " | " .
3601                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3602                         "HEAD");
3603         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3604         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3605         git_print_page_path($file_name, 'blob', $hash_base);
3606         print "<div class=\"page_body\">\n";
3607         print <<HTML;
3608 <table class="blame">
3609   <tr>
3610     <th>Commit</th>
3611     <th>Age</th>
3612     <th>Author</th>
3613     <th>Line</th>
3614     <th>Data</th>
3615   </tr>
3616 HTML
3617         my @line_class = (qw(light dark));
3618         my $line_class_len = scalar (@line_class);
3619         my $line_class_num = $#line_class;
3620         while (my $line = <$fd>) {
3621                 my $long_rev;
3622                 my $short_rev;
3623                 my $author;
3624                 my $time;
3625                 my $lineno;
3626                 my $data;
3627                 my $age;
3628                 my $age_str;
3629                 my $age_class;
3630
3631                 chomp $line;
3632                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3633
3634                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3635                         $long_rev = $1;
3636                         $author   = $2;
3637                         $time     = $3;
3638                         $lineno   = $4;
3639                         $data     = $5;
3640                 } else {
3641                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3642                         next;
3643                 }
3644                 $short_rev  = substr ($long_rev, 0, 8);
3645                 $age        = time () - $time;
3646                 $age_str    = age_string ($age);
3647                 $age_str    =~ s/ /&nbsp;/g;
3648                 $age_class  = age_class($age);
3649                 $author     = esc_html ($author);
3650                 $author     =~ s/ /&nbsp;/g;
3651
3652                 $data = untabify($data);
3653                 $data = esc_html ($data);
3654
3655                 print <<HTML;
3656   <tr class="$line_class[$line_class_num]">
3657     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3658     <td class="$age_class">$age_str</td>
3659     <td>$author</td>
3660     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3661     <td class="pre">$data</td>
3662   </tr>
3663 HTML
3664         } # while (my $line = <$fd>)
3665         print "</table>\n\n";
3666         close $fd
3667                 or print "Reading blob failed.\n";
3668         print "</div>";
3669         git_footer_html();
3670 }
3671
3672 sub git_tags {
3673         my $head = git_get_head_hash($project);
3674         git_header_html();
3675         git_print_page_nav('','', $head,undef,$head);
3676         git_print_header_div('summary', $project);
3677
3678         my @tagslist = git_get_tags_list();
3679         if (@tagslist) {
3680                 git_tags_body(\@tagslist);
3681         }
3682         git_footer_html();
3683 }
3684
3685 sub git_heads {
3686         my $head = git_get_head_hash($project);
3687         git_header_html();
3688         git_print_page_nav('','', $head,undef,$head);
3689         git_print_header_div('summary', $project);
3690
3691         my @headslist = git_get_heads_list();
3692         if (@headslist) {
3693                 git_heads_body(\@headslist, $head);
3694         }
3695         git_footer_html();
3696 }
3697
3698 sub git_blob_plain {
3699         my $expires;
3700
3701         if (!defined $hash) {
3702                 if (defined $file_name) {
3703                         my $base = $hash_base || git_get_head_hash($project);
3704                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3705                                 or die_error(undef, "Error lookup file");
3706                 } else {
3707                         die_error(undef, "No file name defined");
3708                 }
3709         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3710                 # blobs defined by non-textual hash id's can be cached
3711                 $expires = "+1d";
3712         }
3713
3714         my $type = shift;
3715         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3716                 or die_error(undef, "Couldn't cat $file_name, $hash");
3717
3718         $type ||= blob_mimetype($fd, $file_name);
3719
3720         # save as filename, even when no $file_name is given
3721         my $save_as = "$hash";
3722         if (defined $file_name) {
3723                 $save_as = $file_name;
3724         } elsif ($type =~ m/^text\//) {
3725                 $save_as .= '.txt';
3726         }
3727
3728         print $cgi->header(
3729                 -type => "$type",
3730                 -expires=>$expires,
3731                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3732         undef $/;
3733         binmode STDOUT, ':raw';
3734         print <$fd>;
3735         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3736         $/ = "\n";
3737         close $fd;
3738 }
3739
3740 sub git_blob {
3741         my $expires;
3742
3743         if (!defined $hash) {
3744                 if (defined $file_name) {
3745                         my $base = $hash_base || git_get_head_hash($project);
3746                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3747                                 or die_error(undef, "Error lookup file");
3748                 } else {
3749                         die_error(undef, "No file name defined");
3750                 }
3751         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3752                 # blobs defined by non-textual hash id's can be cached
3753                 $expires = "+1d";
3754         }
3755
3756         my ($have_blame) = gitweb_check_feature('blame');
3757         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3758                 or die_error(undef, "Couldn't cat $file_name, $hash");
3759         my $mimetype = blob_mimetype($fd, $file_name);
3760         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3761                 close $fd;
3762                 return git_blob_plain($mimetype);
3763         }
3764         # we can have blame only for text/* mimetype
3765         $have_blame &&= ($mimetype =~ m!^text/!);
3766
3767         git_header_html(undef, $expires);
3768         my $formats_nav = '';
3769         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3770                 if (defined $file_name) {
3771                         if ($have_blame) {
3772                                 $formats_nav .=
3773                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3774                                                                hash=>$hash, file_name=>$file_name)},
3775                                                 "blame") .
3776                                         " | ";
3777                         }
3778                         $formats_nav .=
3779                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3780                                                        hash=>$hash, file_name=>$file_name)},
3781                                         "history") .
3782                                 " | " .
3783                                 $cgi->a({-href => href(action=>"blob_plain",
3784                                                        hash=>$hash, file_name=>$file_name)},
3785                                         "raw") .
3786                                 " | " .
3787                                 $cgi->a({-href => href(action=>"blob",
3788                                                        hash_base=>"HEAD", file_name=>$file_name)},
3789                                         "HEAD");
3790                 } else {
3791                         $formats_nav .=
3792                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3793                 }
3794                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3795                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3796         } else {
3797                 print "<div class=\"page_nav\">\n" .
3798                       "<br/><br/></div>\n" .
3799                       "<div class=\"title\">$hash</div>\n";
3800         }
3801         git_print_page_path($file_name, "blob", $hash_base);
3802         print "<div class=\"page_body\">\n";
3803         if ($mimetype =~ m!^text/!) {
3804                 my $nr;
3805                 while (my $line = <$fd>) {
3806                         chomp $line;
3807                         $nr++;
3808                         $line = untabify($line);
3809                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3810                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3811                 }
3812         } elsif ($mimetype =~ m!^image/!) {
3813                 print qq!<img type="$mimetype"!;
3814                 if ($file_name) {
3815                         print qq! alt="$file_name" title="$file_name"!;
3816                 }
3817                 print qq! src="! .
3818                       href(action=>"blob_plain", hash=>$hash,
3819                            hash_base=>$hash_base, file_name=>$file_name) .
3820                       qq!" />\n!;
3821         }
3822         close $fd
3823                 or print "Reading blob failed.\n";
3824         print "</div>";
3825         git_footer_html();
3826 }
3827
3828 sub git_tree {
3829         my $have_snapshot = gitweb_have_snapshot();
3830
3831         if (!defined $hash_base) {
3832                 $hash_base = "HEAD";
3833         }
3834         if (!defined $hash) {
3835                 if (defined $file_name) {
3836                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3837                 } else {
3838                         $hash = $hash_base;
3839                 }
3840         }
3841         $/ = "\0";
3842         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3843                 or die_error(undef, "Open git-ls-tree failed");
3844         my @entries = map { chomp; $_ } <$fd>;
3845         close $fd or die_error(undef, "Reading tree failed");
3846         $/ = "\n";
3847
3848         my $refs = git_get_references();
3849         my $ref = format_ref_marker($refs, $hash_base);
3850         git_header_html();
3851         my $basedir = '';
3852         my ($have_blame) = gitweb_check_feature('blame');
3853         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3854                 my @views_nav = ();
3855                 if (defined $file_name) {
3856                         push @views_nav,
3857                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3858                                                        hash=>$hash, file_name=>$file_name)},
3859                                         "history"),
3860                                 $cgi->a({-href => href(action=>"tree",
3861                                                        hash_base=>"HEAD", file_name=>$file_name)},
3862                                         "HEAD"),
3863                 }
3864                 if ($have_snapshot) {
3865                         # FIXME: Should be available when we have no hash base as well.
3866                         push @views_nav,
3867                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3868                                         "snapshot");
3869                 }
3870                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3871                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3872         } else {
3873                 undef $hash_base;
3874                 print "<div class=\"page_nav\">\n";
3875                 print "<br/><br/></div>\n";
3876                 print "<div class=\"title\">$hash</div>\n";
3877         }
3878         if (defined $file_name) {
3879                 $basedir = $file_name;
3880                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3881                         $basedir .= '/';
3882                 }
3883         }
3884         git_print_page_path($file_name, 'tree', $hash_base);
3885         print "<div class=\"page_body\">\n";
3886         print "<table cellspacing=\"0\">\n";
3887         my $alternate = 1;
3888         # '..' (top directory) link if possible
3889         if (defined $hash_base &&
3890             defined $file_name && $file_name =~ m![^/]+$!) {
3891                 if ($alternate) {
3892                         print "<tr class=\"dark\">\n";
3893                 } else {
3894                         print "<tr class=\"light\">\n";
3895                 }
3896                 $alternate ^= 1;
3897
3898                 my $up = $file_name;
3899                 $up =~ s!/?[^/]+$!!;
3900                 undef $up unless $up;
3901                 # based on git_print_tree_entry
3902                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3903                 print '<td class="list">';
3904                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3905                                              file_name=>$up)},
3906                               "..");
3907                 print "</td>\n";
3908                 print "<td class=\"link\"></td>\n";
3909
3910                 print "</tr>\n";
3911         }
3912         foreach my $line (@entries) {
3913                 my %t = parse_ls_tree_line($line, -z => 1);
3914
3915                 if ($alternate) {
3916                         print "<tr class=\"dark\">\n";
3917                 } else {
3918                         print "<tr class=\"light\">\n";
3919                 }
3920                 $alternate ^= 1;
3921
3922                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3923
3924                 print "</tr>\n";
3925         }
3926         print "</table>\n" .
3927               "</div>";
3928         git_footer_html();
3929 }
3930
3931 sub git_snapshot {
3932         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3933         my $have_snapshot = (defined $ctype && defined $suffix);
3934         if (!$have_snapshot) {
3935                 die_error('403 Permission denied', "Permission denied");
3936         }
3937
3938         if (!defined $hash) {
3939                 $hash = git_get_head_hash($project);
3940         }
3941
3942         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3943
3944         print $cgi->header(
3945                 -type => "application/$ctype",
3946                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3947                 -status => '200 OK');
3948
3949         my $git = git_cmd_str();
3950         my $name = $project;
3951         $name =~ s/\047/\047\\\047\047/g;
3952         open my $fd, "-|",
3953                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3954                 or die_error(undef, "Execute git-tar-tree failed");
3955         binmode STDOUT, ':raw';
3956         print <$fd>;
3957         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3958         close $fd;
3959
3960 }
3961
3962 sub git_log {
3963         my $head = git_get_head_hash($project);
3964         if (!defined $hash) {
3965                 $hash = $head;
3966         }
3967         if (!defined $page) {
3968                 $page = 0;
3969         }
3970         my $refs = git_get_references();
3971
3972         my @commitlist = parse_commits($hash, 101, (100 * $page));
3973
3974         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3975
3976         git_header_html();
3977         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3978
3979         if (!@commitlist) {
3980                 my %co = parse_commit($hash);
3981
3982                 git_print_header_div('summary', $project);
3983                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3984         }
3985         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3986         for (my $i = 0; $i <= $to; $i++) {
3987                 my %co = %{$commitlist[$i]};
3988                 next if !%co;
3989                 my $commit = $co{'id'};
3990                 my $ref = format_ref_marker($refs, $commit);
3991                 my %ad = parse_date($co{'author_epoch'});
3992                 git_print_header_div('commit',
3993                                "<span class=\"age\">$co{'age_string'}</span>" .
3994                                esc_html($co{'title'}) . $ref,
3995                                $commit);
3996                 print "<div class=\"title_text\">\n" .
3997                       "<div class=\"log_link\">\n" .
3998                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3999                       " | " .
4000                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4001                       " | " .
4002                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4003                       "<br/>\n" .
4004                       "</div>\n" .
4005                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4006                       "</div>\n";
4007
4008                 print "<div class=\"log_body\">\n";
4009                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4010                 print "</div>\n";
4011         }
4012         if ($#commitlist >= 100) {
4013                 print "<div class=\"page_nav\">\n";
4014                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4015                                -accesskey => "n", -title => "Alt-n"}, "next");
4016                 print "</div>\n";
4017         }
4018         git_footer_html();
4019 }
4020
4021 sub git_commit {
4022         $hash ||= $hash_base || "HEAD";
4023         my %co = parse_commit($hash);
4024         if (!%co) {
4025                 die_error(undef, "Unknown commit object");
4026         }
4027         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4028         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4029
4030         my $parent  = $co{'parent'};
4031         my $parents = $co{'parents'}; # listref
4032
4033         # we need to prepare $formats_nav before any parameter munging
4034         my $formats_nav;
4035         if (!defined $parent) {
4036                 # --root commitdiff
4037                 $formats_nav .= '(initial)';
4038         } elsif (@$parents == 1) {
4039                 # single parent commit
4040                 $formats_nav .=
4041                         '(parent: ' .
4042                         $cgi->a({-href => href(action=>"commit",
4043                                                hash=>$parent)},
4044                                 esc_html(substr($parent, 0, 7))) .
4045                         ')';
4046         } else {
4047                 # merge commit
4048                 $formats_nav .=
4049                         '(merge: ' .
4050                         join(' ', map {
4051                                 $cgi->a({-href => href(action=>"commit",
4052                                                        hash=>$_)},
4053                                         esc_html(substr($_, 0, 7)));
4054                         } @$parents ) .
4055                         ')';
4056         }
4057
4058         if (!defined $parent) {
4059                 $parent = "--root";
4060         }
4061         my @difftree;
4062         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4063                 @diff_opts,
4064                 (@$parents <= 1 ? $parent : '-c'),
4065                 $hash, "--"
4066                 or die_error(undef, "Open git-diff-tree failed");
4067         @difftree = map { chomp; $_ } <$fd>;
4068         close $fd or die_error(undef, "Reading git-diff-tree failed");
4069
4070         # non-textual hash id's can be cached
4071         my $expires;
4072         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4073                 $expires = "+1d";
4074         }
4075         my $refs = git_get_references();
4076         my $ref = format_ref_marker($refs, $co{'id'});
4077
4078         my $have_snapshot = gitweb_have_snapshot();
4079
4080         git_header_html(undef, $expires);
4081         git_print_page_nav('commit', '',
4082                            $hash, $co{'tree'}, $hash,
4083                            $formats_nav);
4084
4085         if (defined $co{'parent'}) {
4086                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4087         } else {
4088                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4089         }
4090         print "<div class=\"title_text\">\n" .
4091               "<table cellspacing=\"0\">\n";
4092         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4093               "<tr>" .
4094               "<td></td><td> $ad{'rfc2822'}";
4095         if ($ad{'hour_local'} < 6) {
4096                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4097                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4098         } else {
4099                 printf(" (%02d:%02d %s)",
4100                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4101         }
4102         print "</td>" .
4103               "</tr>\n";
4104         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4105         print "<tr><td></td><td> $cd{'rfc2822'}" .
4106               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4107               "</td></tr>\n";
4108         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4109         print "<tr>" .
4110               "<td>tree</td>" .
4111               "<td class=\"sha1\">" .
4112               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4113                        class => "list"}, $co{'tree'}) .
4114               "</td>" .
4115               "<td class=\"link\">" .
4116               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4117                       "tree");
4118         if ($have_snapshot) {
4119                 print " | " .
4120                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4121         }
4122         print "</td>" .
4123               "</tr>\n";
4124
4125         foreach my $par (@$parents) {
4126                 print "<tr>" .
4127                       "<td>parent</td>" .
4128                       "<td class=\"sha1\">" .
4129                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4130                                class => "list"}, $par) .
4131                       "</td>" .
4132                       "<td class=\"link\">" .
4133                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4134                       " | " .
4135                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4136                       "</td>" .
4137                       "</tr>\n";
4138         }
4139         print "</table>".
4140               "</div>\n";
4141
4142         print "<div class=\"page_body\">\n";
4143         git_print_log($co{'comment'});
4144         print "</div>\n";
4145
4146         git_difftree_body(\@difftree, $hash, @$parents);
4147
4148         git_footer_html();
4149 }
4150
4151 sub git_object {
4152         # object is defined by:
4153         # - hash or hash_base alone
4154         # - hash_base and file_name
4155         my $type;
4156
4157         # - hash or hash_base alone
4158         if ($hash || ($hash_base && !defined $file_name)) {
4159                 my $object_id = $hash || $hash_base;
4160
4161                 my $git_command = git_cmd_str();
4162                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4163                         or die_error('404 Not Found', "Object does not exist");
4164                 $type = <$fd>;
4165                 chomp $type;
4166                 close $fd
4167                         or die_error('404 Not Found', "Object does not exist");
4168
4169         # - hash_base and file_name
4170         } elsif ($hash_base && defined $file_name) {
4171                 $file_name =~ s,/+$,,;
4172
4173                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4174                         or die_error('404 Not Found', "Base object does not exist");
4175
4176                 # here errors should not hapen
4177                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4178                         or die_error(undef, "Open git-ls-tree failed");
4179                 my $line = <$fd>;
4180                 close $fd;
4181
4182                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4183                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4184                         die_error('404 Not Found', "File or directory for given base does not exist");
4185                 }
4186                 $type = $2;
4187                 $hash = $3;
4188         } else {
4189                 die_error('404 Not Found', "Not enough information to find object");
4190         }
4191
4192         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4193                                           hash=>$hash, hash_base=>$hash_base,
4194                                           file_name=>$file_name),
4195                              -status => '302 Found');
4196 }
4197
4198 sub git_blobdiff {
4199         my $format = shift || 'html';
4200
4201         my $fd;
4202         my @difftree;
4203         my %diffinfo;
4204         my $expires;
4205
4206         # preparing $fd and %diffinfo for git_patchset_body
4207         # new style URI
4208         if (defined $hash_base && defined $hash_parent_base) {
4209                 if (defined $file_name) {
4210                         # read raw output
4211                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4212                                 $hash_parent_base, $hash_base,
4213                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4214                                 or die_error(undef, "Open git-diff-tree failed");
4215                         @difftree = map { chomp; $_ } <$fd>;
4216                         close $fd
4217                                 or die_error(undef, "Reading git-diff-tree failed");
4218                         @difftree
4219                                 or die_error('404 Not Found', "Blob diff not found");
4220
4221                 } elsif (defined $hash &&
4222                          $hash =~ /[0-9a-fA-F]{40}/) {
4223                         # try to find filename from $hash
4224
4225                         # read filtered raw output
4226                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4227                                 $hash_parent_base, $hash_base, "--"
4228                                 or die_error(undef, "Open git-diff-tree failed");
4229                         @difftree =
4230                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4231                                 # $hash == to_id
4232                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4233                                 map { chomp; $_ } <$fd>;
4234                         close $fd
4235                                 or die_error(undef, "Reading git-diff-tree failed");
4236                         @difftree
4237                                 or die_error('404 Not Found', "Blob diff not found");
4238
4239                 } else {
4240                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4241                 }
4242
4243                 if (@difftree > 1) {
4244                         die_error('404 Not Found', "Ambiguous blob diff specification");
4245                 }
4246
4247                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4248                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4249                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4250
4251                 $hash_parent ||= $diffinfo{'from_id'};
4252                 $hash        ||= $diffinfo{'to_id'};
4253
4254                 # non-textual hash id's can be cached
4255                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4256                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4257                         $expires = '+1d';
4258                 }
4259
4260                 # open patch output
4261                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4262                         '-p', ($format eq 'html' ? "--full-index" : ()),
4263                         $hash_parent_base, $hash_base,
4264                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4265                         or die_error(undef, "Open git-diff-tree failed");
4266         }
4267
4268         # old/legacy style URI
4269         if (!%diffinfo && # if new style URI failed
4270             defined $hash && defined $hash_parent) {
4271                 # fake git-diff-tree raw output
4272                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4273                 $diffinfo{'from_id'} = $hash_parent;
4274                 $diffinfo{'to_id'}   = $hash;
4275                 if (defined $file_name) {
4276                         if (defined $file_parent) {
4277                                 $diffinfo{'status'} = '2';
4278                                 $diffinfo{'from_file'} = $file_parent;
4279                                 $diffinfo{'to_file'}   = $file_name;
4280                         } else { # assume not renamed
4281                                 $diffinfo{'status'} = '1';
4282                                 $diffinfo{'from_file'} = $file_name;
4283                                 $diffinfo{'to_file'}   = $file_name;
4284                         }
4285                 } else { # no filename given
4286                         $diffinfo{'status'} = '2';
4287                         $diffinfo{'from_file'} = $hash_parent;
4288                         $diffinfo{'to_file'}   = $hash;
4289                 }
4290
4291                 # non-textual hash id's can be cached
4292                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4293                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4294                         $expires = '+1d';
4295                 }
4296
4297                 # open patch output
4298                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4299                         '-p', ($format eq 'html' ? "--full-index" : ()),
4300                         $hash_parent, $hash, "--"
4301                         or die_error(undef, "Open git-diff failed");
4302         } else  {
4303                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4304                         unless %diffinfo;
4305         }
4306
4307         # header
4308         if ($format eq 'html') {
4309                 my $formats_nav =
4310                         $cgi->a({-href => href(action=>"blobdiff_plain",
4311                                                hash=>$hash, hash_parent=>$hash_parent,
4312                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4313                                                file_name=>$file_name, file_parent=>$file_parent)},
4314                                 "raw");
4315                 git_header_html(undef, $expires);
4316                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4317                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4318                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4319                 } else {
4320                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4321                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4322                 }
4323                 if (defined $file_name) {
4324                         git_print_page_path($file_name, "blob", $hash_base);
4325                 } else {
4326                         print "<div class=\"page_path\"></div>\n";
4327                 }
4328
4329         } elsif ($format eq 'plain') {
4330                 print $cgi->header(
4331                         -type => 'text/plain',
4332                         -charset => 'utf-8',
4333                         -expires => $expires,
4334                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4335
4336                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4337
4338         } else {
4339                 die_error(undef, "Unknown blobdiff format");
4340         }
4341
4342         # patch
4343         if ($format eq 'html') {
4344                 print "<div class=\"page_body\">\n";
4345
4346                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4347                 close $fd;
4348
4349                 print "</div>\n"; # class="page_body"
4350                 git_footer_html();
4351
4352         } else {
4353                 while (my $line = <$fd>) {
4354                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4355                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4356
4357                         print $line;
4358
4359                         last if $line =~ m!^\+\+\+!;
4360                 }
4361                 local $/ = undef;
4362                 print <$fd>;
4363                 close $fd;
4364         }
4365 }
4366
4367 sub git_blobdiff_plain {
4368         git_blobdiff('plain');
4369 }
4370
4371 sub git_commitdiff {
4372         my $format = shift || 'html';
4373         $hash ||= $hash_base || "HEAD";
4374         my %co = parse_commit($hash);
4375         if (!%co) {
4376                 die_error(undef, "Unknown commit object");
4377         }
4378
4379         # we need to prepare $formats_nav before any parameter munging
4380         my $formats_nav;
4381         if ($format eq 'html') {
4382                 $formats_nav =
4383                         $cgi->a({-href => href(action=>"commitdiff_plain",
4384                                                hash=>$hash, hash_parent=>$hash_parent)},
4385                                 "raw");
4386
4387                 if (defined $hash_parent) {
4388                         # commitdiff with two commits given
4389                         my $hash_parent_short = $hash_parent;
4390                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4391                                 $hash_parent_short = substr($hash_parent, 0, 7);
4392                         }
4393                         $formats_nav .=
4394                                 ' (from: ' .
4395                                 $cgi->a({-href => href(action=>"commitdiff",
4396                                                        hash=>$hash_parent)},
4397                                         esc_html($hash_parent_short)) .
4398                                 ')';
4399                 } elsif (!$co{'parent'}) {
4400                         # --root commitdiff
4401                         $formats_nav .= ' (initial)';
4402                 } elsif (scalar @{$co{'parents'}} == 1) {
4403                         # single parent commit
4404                         $formats_nav .=
4405                                 ' (parent: ' .
4406                                 $cgi->a({-href => href(action=>"commitdiff",
4407                                                        hash=>$co{'parent'})},
4408                                         esc_html(substr($co{'parent'}, 0, 7))) .
4409                                 ')';
4410                 } else {
4411                         # merge commit
4412                         $formats_nav .=
4413                                 ' (merge: ' .
4414                                 join(' ', map {
4415                                         $cgi->a({-href => href(action=>"commitdiff",
4416                                                                hash=>$_)},
4417                                                 esc_html(substr($_, 0, 7)));
4418                                 } @{$co{'parents'}} ) .
4419                                 ')';
4420                 }
4421         }
4422
4423         my $hash_parent_param = $hash_parent;
4424         if (!defined $hash_parent) {
4425                 $hash_parent_param =
4426                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4427         }
4428
4429         # read commitdiff
4430         my $fd;
4431         my @difftree;
4432         if ($format eq 'html') {
4433                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4434                         "--no-commit-id", "--patch-with-raw", "--full-index",
4435                         $hash_parent_param, $hash, "--"
4436                         or die_error(undef, "Open git-diff-tree failed");
4437
4438                 while (my $line = <$fd>) {
4439                         chomp $line;
4440                         # empty line ends raw part of diff-tree output
4441                         last unless $line;
4442                         push @difftree, scalar parse_difftree_raw_line($line);
4443                 }
4444
4445         } elsif ($format eq 'plain') {
4446                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4447                         '-p', $hash_parent_param, $hash, "--"
4448                         or die_error(undef, "Open git-diff-tree failed");
4449
4450         } else {
4451                 die_error(undef, "Unknown commitdiff format");
4452         }
4453
4454         # non-textual hash id's can be cached
4455         my $expires;
4456         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4457                 $expires = "+1d";
4458         }
4459
4460         # write commit message
4461         if ($format eq 'html') {
4462                 my $refs = git_get_references();
4463                 my $ref = format_ref_marker($refs, $co{'id'});
4464
4465                 git_header_html(undef, $expires);
4466                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4467                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4468                 git_print_authorship(\%co);
4469                 print "<div class=\"page_body\">\n";
4470                 if (@{$co{'comment'}} > 1) {
4471                         print "<div class=\"log\">\n";
4472                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4473                         print "</div>\n"; # class="log"
4474                 }
4475
4476         } elsif ($format eq 'plain') {
4477                 my $refs = git_get_references("tags");
4478                 my $tagname = git_get_rev_name_tags($hash);
4479                 my $filename = basename($project) . "-$hash.patch";
4480
4481                 print $cgi->header(
4482                         -type => 'text/plain',
4483                         -charset => 'utf-8',
4484                         -expires => $expires,
4485                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4486                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4487                 print <<TEXT;
4488 From: $co{'author'}
4489 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4490 Subject: $co{'title'}
4491 TEXT
4492                 print "X-Git-Tag: $tagname\n" if $tagname;
4493                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4494
4495                 foreach my $line (@{$co{'comment'}}) {
4496                         print "$line\n";
4497                 }
4498                 print "---\n\n";
4499         }
4500
4501         # write patch
4502         if ($format eq 'html') {
4503                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4504                 print "<br/>\n";
4505
4506                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4507                 close $fd;
4508                 print "</div>\n"; # class="page_body"
4509                 git_footer_html();
4510
4511         } elsif ($format eq 'plain') {
4512                 local $/ = undef;
4513                 print <$fd>;
4514                 close $fd
4515                         or print "Reading git-diff-tree failed\n";
4516         }
4517 }
4518
4519 sub git_commitdiff_plain {
4520         git_commitdiff('plain');
4521 }
4522
4523 sub git_history {
4524         if (!defined $hash_base) {
4525                 $hash_base = git_get_head_hash($project);
4526         }
4527         if (!defined $page) {
4528                 $page = 0;
4529         }
4530         my $ftype;
4531         my %co = parse_commit($hash_base);
4532         if (!%co) {
4533                 die_error(undef, "Unknown commit object");
4534         }
4535
4536         my $refs = git_get_references();
4537         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4538
4539         if (!defined $hash && defined $file_name) {
4540                 $hash = git_get_hash_by_path($hash_base, $file_name);
4541         }
4542         if (defined $hash) {
4543                 $ftype = git_get_type($hash);
4544         }
4545
4546         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4547
4548         my $paging_nav = '';
4549         if ($page > 0) {
4550                 $paging_nav .=
4551                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4552                                                file_name=>$file_name)},
4553                                 "first");
4554                 $paging_nav .= " &sdot; " .
4555                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4556                                                file_name=>$file_name, page=>$page-1),
4557                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4558         } else {
4559                 $paging_nav .= "first";
4560                 $paging_nav .= " &sdot; prev";
4561         }
4562         if ($#commitlist >= 100) {
4563                 $paging_nav .= " &sdot; " .
4564                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4565                                                file_name=>$file_name, page=>$page+1),
4566                                  -accesskey => "n", -title => "Alt-n"}, "next");
4567         } else {
4568                 $paging_nav .= " &sdot; next";
4569         }
4570         my $next_link = '';
4571         if ($#commitlist >= 100) {
4572                 $next_link =
4573                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4574                                                file_name=>$file_name, page=>$page+1),
4575                                  -accesskey => "n", -title => "Alt-n"}, "next");
4576         }
4577
4578         git_header_html();
4579         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4580         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4581         git_print_page_path($file_name, $ftype, $hash_base);
4582
4583         git_history_body(\@commitlist, 0, 99,
4584                          $refs, $hash_base, $ftype, $next_link);
4585
4586         git_footer_html();
4587 }
4588
4589 sub git_search {
4590         my ($have_search) = gitweb_check_feature('search');
4591         if (!$have_search) {
4592                 die_error('403 Permission denied', "Permission denied");
4593         }
4594         if (!defined $searchtext) {
4595                 die_error(undef, "Text field empty");
4596         }
4597         if (!defined $hash) {
4598                 $hash = git_get_head_hash($project);
4599         }
4600         my %co = parse_commit($hash);
4601         if (!%co) {
4602                 die_error(undef, "Unknown commit object");
4603         }
4604         if (!defined $page) {
4605                 $page = 0;
4606         }
4607
4608         $searchtype ||= 'commit';
4609         if ($searchtype eq 'pickaxe') {
4610                 # pickaxe may take all resources of your box and run for several minutes
4611                 # with every query - so decide by yourself how public you make this feature
4612                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4613                 if (!$have_pickaxe) {
4614                         die_error('403 Permission denied', "Permission denied");
4615                 }
4616         }
4617
4618         git_header_html();
4619
4620         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4621                 my $greptype;
4622                 if ($searchtype eq 'commit') {
4623                         $greptype = "--grep=";
4624                 } elsif ($searchtype eq 'author') {
4625                         $greptype = "--author=";
4626                 } elsif ($searchtype eq 'committer') {
4627                         $greptype = "--committer=";
4628                 }
4629                 $greptype .= $searchtext;
4630                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4631
4632                 my $paging_nav = '';
4633                 if ($page > 0) {
4634                         $paging_nav .=
4635                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4636                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4637                                         "first");
4638                         $paging_nav .= " &sdot; " .
4639                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4640                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4641                                                        page=>$page-1),
4642                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4643                 } else {
4644                         $paging_nav .= "first";
4645                         $paging_nav .= " &sdot; prev";
4646                 }
4647                 if ($#commitlist >= 100) {
4648                         $paging_nav .= " &sdot; " .
4649                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4650                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4651                                                        page=>$page+1),
4652                                          -accesskey => "n", -title => "Alt-n"}, "next");
4653                 } else {
4654                         $paging_nav .= " &sdot; next";
4655                 }
4656                 my $next_link = '';
4657                 if ($#commitlist >= 100) {
4658                         $next_link =
4659                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4660                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4661                                                        page=>$page+1),
4662                                          -accesskey => "n", -title => "Alt-n"}, "next");
4663                 }
4664
4665                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4666                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4667                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4668         }
4669
4670         if ($searchtype eq 'pickaxe') {
4671                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4672                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4673
4674                 print "<table cellspacing=\"0\">\n";
4675                 my $alternate = 1;
4676                 $/ = "\n";
4677                 my $git_command = git_cmd_str();
4678                 open my $fd, "-|", "$git_command rev-list $hash | " .
4679                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4680                 undef %co;
4681                 my @files;
4682                 while (my $line = <$fd>) {
4683                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4684                                 my %set;
4685                                 $set{'file'} = $6;
4686                                 $set{'from_id'} = $3;
4687                                 $set{'to_id'} = $4;
4688                                 $set{'id'} = $set{'to_id'};
4689                                 if ($set{'id'} =~ m/0{40}/) {
4690                                         $set{'id'} = $set{'from_id'};
4691                                 }
4692                                 if ($set{'id'} =~ m/0{40}/) {
4693                                         next;
4694                                 }
4695                                 push @files, \%set;
4696                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4697                                 if (%co) {
4698                                         if ($alternate) {
4699                                                 print "<tr class=\"dark\">\n";
4700                                         } else {
4701                                                 print "<tr class=\"light\">\n";
4702                                         }
4703                                         $alternate ^= 1;
4704                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4705                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4706                                               "<td>" .
4707                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4708                                                       -class => "list subject"},
4709                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4710                                         while (my $setref = shift @files) {
4711                                                 my %set = %$setref;
4712                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4713                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4714                                                               -class => "list"},
4715                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4716                                                       "<br/>\n";
4717                                         }
4718                                         print "</td>\n" .
4719                                               "<td class=\"link\">" .
4720                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4721                                               " | " .
4722                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4723                                         print "</td>\n" .
4724                                               "</tr>\n";
4725                                 }
4726                                 %co = parse_commit($1);
4727                         }
4728                 }
4729                 close $fd;
4730
4731                 print "</table>\n";
4732         }
4733         git_footer_html();
4734 }
4735
4736 sub git_search_help {
4737         git_header_html();
4738         git_print_page_nav('','', $hash,$hash,$hash);
4739         print <<EOT;
4740 <dl>
4741 <dt><b>commit</b></dt>
4742 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4743 <dt><b>author</b></dt>
4744 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4745 <dt><b>committer</b></dt>
4746 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4747 EOT
4748         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4749         if ($have_pickaxe) {
4750                 print <<EOT;
4751 <dt><b>pickaxe</b></dt>
4752 <dd>All commits that caused the string to appear or disappear from any file (changes that
4753 added, removed or "modified" the string) will be listed. This search can take a while and
4754 takes a lot of strain on the server, so please use it wisely.</dd>
4755 EOT
4756         }
4757         print "</dl>\n";
4758         git_footer_html();
4759 }
4760
4761 sub git_shortlog {
4762         my $head = git_get_head_hash($project);
4763         if (!defined $hash) {
4764                 $hash = $head;
4765         }
4766         if (!defined $page) {
4767                 $page = 0;
4768         }
4769         my $refs = git_get_references();
4770
4771         my @commitlist = parse_commits($hash, 101, (100 * $page));
4772
4773         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4774         my $next_link = '';
4775         if ($#commitlist >= 100) {
4776                 $next_link =
4777                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4778                                  -accesskey => "n", -title => "Alt-n"}, "next");
4779         }
4780
4781         git_header_html();
4782         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4783         git_print_header_div('summary', $project);
4784
4785         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4786
4787         git_footer_html();
4788 }
4789
4790 ## ......................................................................
4791 ## feeds (RSS, Atom; OPML)
4792
4793 sub git_feed {
4794         my $format = shift || 'atom';
4795         my ($have_blame) = gitweb_check_feature('blame');
4796
4797         # Atom: http://www.atomenabled.org/developers/syndication/
4798         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4799         if ($format ne 'rss' && $format ne 'atom') {
4800                 die_error(undef, "Unknown web feed format");
4801         }
4802
4803         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4804         my $head = $hash || 'HEAD';
4805         my @commitlist = parse_commits($head, 150);
4806
4807         my %latest_commit;
4808         my %latest_date;
4809         my $content_type = "application/$format+xml";
4810         if (defined $cgi->http('HTTP_ACCEPT') &&
4811                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4812                 # browser (feed reader) prefers text/xml
4813                 $content_type = 'text/xml';
4814         }
4815         if (defined($commitlist[0])) {
4816                 %latest_commit = %{$commitlist[0]};
4817                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4818                 print $cgi->header(
4819                         -type => $content_type,
4820                         -charset => 'utf-8',
4821                         -last_modified => $latest_date{'rfc2822'});
4822         } else {
4823                 print $cgi->header(
4824                         -type => $content_type,
4825                         -charset => 'utf-8');
4826         }
4827
4828         # Optimization: skip generating the body if client asks only
4829         # for Last-Modified date.
4830         return if ($cgi->request_method() eq 'HEAD');
4831
4832         # header variables
4833         my $title = "$site_name - $project/$action";
4834         my $feed_type = 'log';
4835         if (defined $hash) {
4836                 $title .= " - '$hash'";
4837                 $feed_type = 'branch log';
4838                 if (defined $file_name) {
4839                         $title .= " :: $file_name";
4840                         $feed_type = 'history';
4841                 }
4842         } elsif (defined $file_name) {
4843                 $title .= " - $file_name";
4844                 $feed_type = 'history';
4845         }
4846         $title .= " $feed_type";
4847         my $descr = git_get_project_description($project);
4848         if (defined $descr) {
4849                 $descr = esc_html($descr);
4850         } else {
4851                 $descr = "$project " .
4852                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4853                          " feed";
4854         }
4855         my $owner = git_get_project_owner($project);
4856         $owner = esc_html($owner);
4857
4858         #header
4859         my $alt_url;
4860         if (defined $file_name) {
4861                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4862         } elsif (defined $hash) {
4863                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4864         } else {
4865                 $alt_url = href(-full=>1, action=>"summary");
4866         }
4867         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4868         if ($format eq 'rss') {
4869                 print <<XML;
4870 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4871 <channel>
4872 XML
4873                 print "<title>$title</title>\n" .
4874                       "<link>$alt_url</link>\n" .
4875                       "<description>$descr</description>\n" .
4876                       "<language>en</language>\n";
4877         } elsif ($format eq 'atom') {
4878                 print <<XML;
4879 <feed xmlns="http://www.w3.org/2005/Atom">
4880 XML
4881                 print "<title>$title</title>\n" .
4882                       "<subtitle>$descr</subtitle>\n" .
4883                       '<link rel="alternate" type="text/html" href="' .
4884                       $alt_url . '" />' . "\n" .
4885                       '<link rel="self" type="' . $content_type . '" href="' .
4886                       $cgi->self_url() . '" />' . "\n" .
4887                       "<id>" . href(-full=>1) . "</id>\n" .
4888                       # use project owner for feed author
4889                       "<author><name>$owner</name></author>\n";
4890                 if (defined $favicon) {
4891                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4892                 }
4893                 if (defined $logo_url) {
4894                         # not twice as wide as tall: 72 x 27 pixels
4895                         print "<logo>" . esc_url($logo) . "</logo>\n";
4896                 }
4897                 if (! %latest_date) {
4898                         # dummy date to keep the feed valid until commits trickle in:
4899                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4900                 } else {
4901                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4902                 }
4903         }
4904
4905         # contents
4906         for (my $i = 0; $i <= $#commitlist; $i++) {
4907                 my %co = %{$commitlist[$i]};
4908                 my $commit = $co{'id'};
4909                 # we read 150, we always show 30 and the ones more recent than 48 hours
4910                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4911                         last;
4912                 }
4913                 my %cd = parse_date($co{'author_epoch'});
4914
4915                 # get list of changed files
4916                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4917                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4918                         or next;
4919                 my @difftree = map { chomp; $_ } <$fd>;
4920                 close $fd
4921                         or next;
4922
4923                 # print element (entry, item)
4924                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4925                 if ($format eq 'rss') {
4926                         print "<item>\n" .
4927                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4928                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4929                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4930                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4931                               "<link>$co_url</link>\n" .
4932                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4933                               "<content:encoded>" .
4934                               "<![CDATA[\n";
4935                 } elsif ($format eq 'atom') {
4936                         print "<entry>\n" .
4937                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4938                               "<updated>$cd{'iso-8601'}</updated>\n" .
4939                               "<author>\n" .
4940                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4941                         if ($co{'author_email'}) {
4942                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4943                         }
4944                         print "</author>\n" .
4945                               # use committer for contributor
4946                               "<contributor>\n" .
4947                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4948                         if ($co{'committer_email'}) {
4949                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4950                         }
4951                         print "</contributor>\n" .
4952                               "<published>$cd{'iso-8601'}</published>\n" .
4953                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4954                               "<id>$co_url</id>\n" .
4955                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4956                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4957                 }
4958                 my $comment = $co{'comment'};
4959                 print "<pre>\n";
4960                 foreach my $line (@$comment) {
4961                         $line = esc_html($line);
4962                         print "$line\n";
4963                 }
4964                 print "</pre><ul>\n";
4965                 foreach my $difftree_line (@difftree) {
4966                         my %difftree = parse_difftree_raw_line($difftree_line);
4967                         next if !$difftree{'from_id'};
4968
4969                         my $file = $difftree{'file'} || $difftree{'to_file'};
4970
4971                         print "<li>" .
4972                               "[" .
4973                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4974                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4975                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4976                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4977                                       -title => "diff"}, 'D');
4978                         if ($have_blame) {
4979                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4980                                                              file_name=>$file, hash_base=>$commit),
4981                                               -title => "blame"}, 'B');
4982                         }
4983                         # if this is not a feed of a file history
4984                         if (!defined $file_name || $file_name ne $file) {
4985                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4986                                                              file_name=>$file, hash=>$commit),
4987                                               -title => "history"}, 'H');
4988                         }
4989                         $file = esc_path($file);
4990                         print "] ".
4991                               "$file</li>\n";
4992                 }
4993                 if ($format eq 'rss') {
4994                         print "</ul>]]>\n" .
4995                               "</content:encoded>\n" .
4996                               "</item>\n";
4997                 } elsif ($format eq 'atom') {
4998                         print "</ul>\n</div>\n" .
4999                               "</content>\n" .
5000                               "</entry>\n";
5001                 }
5002         }
5003
5004         # end of feed
5005         if ($format eq 'rss') {
5006                 print "</channel>\n</rss>\n";
5007         }       elsif ($format eq 'atom') {
5008                 print "</feed>\n";
5009         }
5010 }
5011
5012 sub git_rss {
5013         git_feed('rss');
5014 }
5015
5016 sub git_atom {
5017         git_feed('atom');
5018 }
5019
5020 sub git_opml {
5021         my @list = git_get_projects_list();
5022
5023         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5024         print <<XML;
5025 <?xml version="1.0" encoding="utf-8"?>
5026 <opml version="1.0">
5027 <head>
5028   <title>$site_name OPML Export</title>
5029 </head>
5030 <body>
5031 <outline text="git RSS feeds">
5032 XML
5033
5034         foreach my $pr (@list) {
5035                 my %proj = %$pr;
5036                 my $head = git_get_head_hash($proj{'path'});
5037                 if (!defined $head) {
5038                         next;
5039                 }
5040                 $git_dir = "$projectroot/$proj{'path'}";
5041                 my %co = parse_commit($head);
5042                 if (!%co) {
5043                         next;
5044                 }
5045
5046                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5047                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5048                 my $html = "$my_url?p=$proj{'path'};a=summary";
5049                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5050         }
5051         print <<XML;
5052 </outline>
5053 </body>
5054 </opml>
5055 XML
5056 }